JP2019198140A - Power generator control device, power generation system, and power generator control method - Google Patents

Abstract

A generator control device, a power generation system, and a generator control method that prevent the maintenance operation of a generator from being opened too far and prevent the maintenance operation from being performed at an excessive frequency. I will provide a. SOLUTION: A determination unit 243 uses a combination of an elapsed period length index indicating an elapsed period length from a previous maintenance operation and a power failure probability index indicating a probability of a power failure due to a disaster satisfying a maintenance operation start condition. Or not. When the determination unit 243 determines that the maintenance operation start condition is satisfied, the control instruction output unit 244 outputs the control instruction CS for performing the maintenance operation to the generator. There is a combination of the elapsed period length index and the power outage probability index that is determined not to satisfy the maintenance operation start condition even when the power outage probability index represents the occurrence of a disaster. When the elapsed period length has reached the maximum allowable period length, the combination of the elapsed period length index and an arbitrary power failure probability index satisfies the maintenance operation start condition. [Selection diagram] Fig. 4

Description

  The present invention relates to a generator control device, a power generation system, and a generator control method.

  Patent Document 1 discloses a generator control device that controls a generator that supplies power to a load in place of a commercial power supply in the event of a power failure. When this generator control device receives a quick report indicating that a disaster has occurred, it will start up the generator regardless of the extent of the disaster and whether or not a power failure has occurred in the commercial power supply. Take control. If a power failure does not occur after a predetermined period of time has elapsed after the generator is started, the generator is stopped.

JP 2009-95073 A

  In order to keep the generator in a state where it can be started immediately, it is recommended to perform maintenance operation as a test run of the generator periodically even during a period when no disaster occurs. However, the above-described activation control according to Patent Document 1 is performed independently of regular maintenance operation. For this reason, a situation in which periodic maintenance operation is performed immediately before or after the start of the generator due to the occurrence of a minor disaster that does not result in a power failure may occur.

  In this case, since the operation of the generator by the above-described start control has the same significance as the maintenance operation, the maintenance operation is performed at an excessive frequency. Performing maintenance operations at an excessive frequency is not preferable because it causes waste of fuel stored in the generator.

  On the other hand, in the generator control device according to Patent Document 1, if the generator is not periodically started, a situation in which the generator is hardly started can occur when disasters rarely occur. If the interval between the maintenance operation of the generator and the next maintenance operation is too wide, there is a concern that the generator cannot be started immediately in the event of a power failure.

  An object of the present invention is to provide a generator control device, a power generation system, and power generation that prevent an interval between a generator maintenance operation and the next maintenance operation from being excessively widened and suppress the performance of maintenance operations at an excessive frequency. It is to provide a machine control method.

In order to achieve the above object, a generator control device according to the present invention includes:
When a power failure occurs in the commercial power source, the generator that supplies power to the load in place of the commercial power source and performs a maintenance operation that is a maintenance operation during a period when the commercial power source is healthy is controlled. A generator control device,
Elapsed period length information representing the elapsed period length from the previous maintenance operation performed by the generator, whether or not a disaster that may cause the power failure has occurred, and the disaster when the disaster has occurred Power outage probability information representing the probability of occurrence of the power outage due to the power outage, and the combination of the acquired elapsed period length information and the power outage probability information needs to cause the generator to perform the maintenance operation. Determining means for determining whether or not a predetermined maintenance operation start condition is satisfied,
When the determination unit determines that the combination satisfies the maintenance operation start condition, a control command for performing the maintenance operation is output to the generator, and the determination unit causes the combination to start the maintenance operation. If it is determined that the condition is not satisfied, control command output means for foreseeing the output of the control command to the generator;
With
In the combination, even if the power failure probability information represents the occurrence of the disaster, there is one that is determined by the determination unit as not satisfying the maintenance operation start condition,
When the elapsed period length has reached a predetermined maximum allowable period length, the combination of the elapsed period length information and any of the power outage probability information is determined by the determination means by the maintenance operation start condition. It is determined that

  According to the above configuration, even when the power failure probability information represents the occurrence of a disaster, the determination unit may determine that the maintenance operation start condition is not satisfied, and the control command output unit may postpone the output of the control command. is there. For this reason, compared with the prior art which started the generator unconditionally when a disaster occurs, the performance of maintenance operation at an excessive frequency can be suppressed.

  In addition, when the elapsed period length from the maintenance operation previously performed by the generator has reached a predetermined maximum allowable period length, a combination of the elapsed period length information and any power failure probability information is determined. The means determines that the maintenance operation start condition is satisfied, and the control command output means outputs a control command to the generator. For this reason, it is prevented that the interval between the maintenance operation of the generator and the next maintenance operation is too wide.

The conceptual diagram which shows the structure of the electric power generation system which concerns on Embodiment 1. The block diagram which shows the structure of the generator control apparatus which concerns on Embodiment 1. FIG. The conceptual diagram which shows the content of the power failure probability index specific table which concerns on Embodiment 1. The block diagram which shows the function of the generator control apparatus which concerns on Embodiment 1. FIG. Flowchart of power failure probability index specifying process according to the first embodiment Flowchart of elapsed period length index specifying processing according to the first embodiment Flowchart of maintenance operation control according to the first embodiment The conceptual diagram which shows one display example of the display part of the generator control apparatus which concerns on Embodiment 1. The conceptual diagram which shows another display example of the display part of the generator control apparatus which concerns on Embodiment 1. FIG. Flowchart of maintenance operation control according to the second embodiment A conceptual diagram showing composition of a power generation system concerning Embodiment 3. A conceptual diagram showing composition of a power generation system concerning Embodiment 4.

  Hereinafter, the power generation system according to Embodiment 1-4 of the present invention will be described with reference to the drawings. In the figure, the same or corresponding parts are denoted by the same reference numerals.

[Embodiment 1]
As shown in FIG. 1, a power generation system 300 according to the present embodiment includes a generator 100 that supplies power to a load LD in place of a commercial power supply when a power failure occurs in the commercial power supply, and a generator that controls the generator 100. And a control device 200.

  The load LD refers to an electric device installed in a factory, hospital, building or the like. Further, in this specification, “power failure” means not only that the electric power that can be supplied by the commercial power supply becomes zero, but also that the electric power supplied from the commercial power supply is insufficient or unstable. The concept also includes that the power source cannot properly operate the load LD.

  The generator 100 includes a power generation mechanism 110 that generates electric power when driven, and a prime mover 120 that drives the power generation mechanism 110.

  The prime mover 120 includes an engine that generates kinetic energy by combusting stored fuel, and a control unit that controls the start and stop of the engine and the number of revolutions at the time of startup according to various commands from the generator control device 200. Including. The power generation mechanism 110 converts the kinetic energy generated by the prime mover 120 into electric power by electromagnetic induction. The electric power generated by the electric power generation mechanism 110 is supplied to the load LD.

  The power generation mechanism 110 can be switched between a connected state that is mechanically connected to the prime mover 120 and driven by the prime mover 120, and a non-connected state in which transmission of power from the prime mover 120 is interrupted. In the disconnected state, the prime mover 120 can be operated without generating power in the power generation mechanism 110.

  The generator 100 performs a maintenance operation, which is an operation for maintenance, during a period when the commercial power source is healthy. In the maintenance operation, since the prime mover 120 does not need to supply power to the load LD, the power generation mechanism 110 and the prime mover 120 may be in a disconnected state.

  The purpose of the maintenance operation is to keep the prime mover 120 in an immediately startable state by circulating lubricating oil inside the engine constituting the prime mover 120 and eliminating clogging of piping through which the stored fuel passes. It is.

  The generator control device 200 performs control for causing the generator 100 to perform a maintenance operation. The generator control device 200 receives disaster bulletin data DT representing the occurrence of a disaster and the degree of the disaster that occurred from the disaster bulletin system group DS provided by the Japan Meteorological Agency or an electric power company through the communication line NE.

  Then, the generator control device 200 determines whether or not it is necessary to cause the generator 100 to perform maintenance operation using the received disaster bulletin data DT, and when it is determined that maintenance operation is necessary, Let the generator 100 perform maintenance operation.

  The disaster warning system group DS includes a lightning flash system DS1 that provides lightning flash data indicating the occurrence of lightning and the activity of the lightning that has occurred, and an earthquake that provides earthquake flash data that indicates the occurrence of the earthquake and the extent of the earthquake that has occurred. The bulletin system DS2 is included. That is, the disaster warning data DT includes lightning warning data and earthquake warning data.

  Hereinafter, the generator control device 200 will be described in detail with reference to FIGS.

  As shown in FIG. 2, the generator control device 200 includes a communication unit 210 connected to the communication line NE. The disaster bulletin data DT provided by the disaster bulletin system group DS shown in FIG. 1 is taken into the generator control device 200 through the communication unit 210.

  Further, the generator control device 200 performs a maintenance operation and a generator control program 221 that defines a maintenance operation control procedure including a determination as to whether or not the generator 100 shown in FIG. An auxiliary storage unit 220 as storage means for storing maintenance operation performance date data 222 in which the date is recorded.

  In addition, the auxiliary storage unit 220 also stores a power failure probability index specification table 223 for specifying materials for determining whether or not the generator 100 performs maintenance operation.

  As shown in FIG. 3, the power failure probability index identification table 223 includes power failure probability information representing the probability of a power failure caused by the earthquake or lightning for each of the seismic intensity of the earthquake and the activity of the lightning that has occurred. Are associated with the power outage probability index.

  Information specifying the seismic intensity of the earthquake is included in the earthquake early warning data output by the earthquake early warning system DS2 in the disaster early warning data DT shown in FIG. Further, the information for identifying the lightning activity is included in the lightning flash data output by the lightning flash system DS1 in the disaster flash data DT shown in FIG.

  The outage probability index is an index that takes a larger value as the outage probability increases, specifically, a numerical value that expresses the outage probability in percent. The greater the degree of disaster, the higher the probability of occurrence of a power outage. Therefore, the power outage probability index takes a larger value as the degree of disaster, that is, the seismic intensity of the earthquake and the activity of lightning increases. This power failure probability index is used as a material for determining whether or not the generator 100 is to perform maintenance operation in the above-described maintenance operation control.

  Returning to FIG. 2, the description will be continued. The generator control device 200 also includes a display unit 230 as a determination result output unit that displays a result of determination as to whether or not the generator 100 performs maintenance operation. The display unit 230 is configured by a display that visually outputs a result of determination as to whether or not to perform maintenance operation for the user.

  The generator control device 200 includes a CPU (Central Processing Unit) 240 that executes the generator control program 221 and a main storage unit 250 in which the generator control program 221 and various data are temporarily stored by the CPU 240.

  The CPU 240 functions as each unit shown in FIG. 4 that performs maintenance operation control in cooperation by executing the generator control program 221. Hereinafter, functions realized by the CPU 240 will be described with reference to FIG.

  As shown in FIG. 4, the CPU 240 causes the generator 100 to perform the maintenance operation using the function of the determination unit 243 as a determination unit that determines whether or not the generator 100 performs the maintenance operation. The control command output unit 244 functions as a control command output means for outputting a control command CS for performing maintenance operation to the generator 100.

  Further, the CPU 240 has a function of a power failure probability index specifying unit 241 as a power failure probability information specifying unit. The power failure probability index specifying unit 241 performs a power failure probability index specifying process for specifying a power failure probability index using the disaster warning data DT and the power failure probability index specifying table 223 shown in FIG. 3, and determines the specified power failure probability index. Part 243.

  Further, the CPU 240 has a function of an elapsed period length index specifying unit 242 as an elapsed period length information specifying unit. The elapsed period length index specifying unit 242 performs an elapsed period length index specifying process for specifying the elapsed period length index as the elapsed period length information indicating the elapsed period length from the maintenance operation performed previously for the generator 100. The elapsed period length index is given to the determination unit 243.

  The determination unit 243 acquires the power outage probability index specified by the power outage probability index specifying unit 241 and the elapsed period length index specified by the elapsed period length index specifying unit 242 and acquires the acquired power outage probability index and elapsed period length index. Are used to identify a numerical value representing the degree of necessity for the generator 100 to perform maintenance operation.

  The determination unit 243 also performs control for causing the display unit 230 to display a power failure probability index, an elapsed period length index, and a numerical value indicating the degree of necessity for the generator 100 to perform maintenance operation.

  Then, the determination unit 243 compares the numerical value indicating the degree of necessity of causing the generator 100 to perform the maintenance operation with a threshold value that is predetermined as indicating that the generator 100 needs to perform the maintenance operation. Thus, it is determined whether or not the generator 100 performs maintenance operation.

  Hereinafter, the operation of each unit shown in FIG. 4 will be described in detail with reference to FIGS.

  With reference to FIG. 5, the power failure probability index specifying process performed by the power failure probability index specifying unit 241 will be described. First, the power failure probability index identification unit 241 confirms whether or not there is a disaster at present, that is, whether or not the disaster bulletin system group DS shown in FIG. 1 is transmitting the disaster bulletin data DT (step S11). ).

  Next, when there is a transmission of the disaster warning data DT from the disaster warning system group DS (step S12; YES), the power failure probability index specifying unit 241 receives the disaster warning data DT, and the received disaster warning data DT A power outage probability index corresponding to the degree of disaster to be represented is specified using the power outage probability index specifying table 223 shown in FIG. 3 (step S13), and this processing is finished.

  In step S13, if the disaster early warning data DT is earthquake early warning data indicating the occurrence of an earthquake, the power failure probability index corresponding to the seismic intensity of the earthquake represented by the earthquake early warning data DT is specified as the power failure probability index shown in FIG. It is specified by the table 223.

  Similarly, when the disaster breaking data DT is lightning breaking data indicating the occurrence of lightning, the power failure probability index corresponding to the lightning activity represented by the lightning breaking data is determined by the power failure probability index specifying table 223 shown in FIG. Identified.

  On the other hand, the power failure probability index specifying unit 241 specifies that the power failure probability index is zero (step S14) when there is no transmission of the disaster warning data DT from the disaster warning system group DS (step S12; NO). Finish the process.

  As described above, the power outage probability index takes a value of zero when there is no disaster and takes a value exceeding zero when a disaster occurs. For this reason, it is possible to specify whether or not a disaster has occurred by the power failure probability index.

  Next, the elapsed period length index specifying process performed by the elapsed period length index specifying unit 242 will be described with reference to FIG.

  As shown in FIG. 6, first, the elapsed period length index specifying unit 242 checks the current date (step S21). The elapsed period length index specifying unit 242 has a time measuring function for measuring the date and time, and the current date can be specified by the time measuring function.

  Next, the elapsed period length index specifying unit 242 refers to the maintenance operation performance date data 222 of the auxiliary storage unit 220 shown in FIG. 2, and confirms the date of the previous maintenance operation represented by the maintenance operation performance date data 222 ( Step S22).

  Next, the elapsed period length index specifying unit 242 calculates the difference between the current date specified in step S21 and the date of the previous maintenance operation specified in step S22, so that the elapsed period from the previous maintenance operation is calculated. The elapsed days as the length is obtained (step S23).

  Next, the elapsed period length index specifying unit 242 calculates the ratio of the elapsed days obtained in step S23 to the maximum allowable period length allowed as the maximum value of the interval between the maintenance operation and the next maintenance operation. The ratio is calculated in percent units. The calculated numerical value is an elapsed period length index.

  Specifically, in the present embodiment, the maximum allowable period length is 30 days, and the elapsed period length index specifying unit 242 calculates the elapsed days obtained in step S23 ÷ 30 days × 100%, and calculates the calculated value. The elapsed period length index is set (step S24). Thus, the elapsed period length index specifying process is completed.

  Next, with reference to FIG. 7, the maintenance operation control including the operations of the determination unit 243 and the control command output unit 244 will be described.

  As shown in FIG. 7, first, the power failure probability index specifying unit 241 performs the power failure probability index specifying process of FIG. 5 described above (step S31), and the elapsed period length index specifying unit 242 of FIG. An elapsed period length index specifying process is performed (step S32).

  Next, the determination unit 243 is specified by the power outage probability index specified by the power outage probability index specifying process and the elapsed period length index specifying process as a specifying step for specifying a numerical value indicating the degree of necessity for performing the maintenance operation. The sum with the elapsed period length index is calculated (step S33).

  This sum is a numerical value that represents the degree of necessity of performing maintenance operation. The degree of necessity of maintenance operation that is determined by the length of the elapsed maintenance period from the previous maintenance operation is added to the degree of necessity of maintenance operation that is determined by the degree of disaster. It is a numerical value that takes into account the degree.

  Next, the determination unit 243 determines, as a determination step for determining whether or not the generator 100 is to perform maintenance operation, a maintenance operation start condition indicating that the sum obtained in step S33 needs to perform maintenance operation. Specifically, it is determined whether or not the sum obtained in step S33 is greater than or equal to a predetermined threshold (step S34).

  Here, the threshold value is a numerical value expressed in the same unit as the power failure probability index and the elapsed period length index. Specifically, in the present embodiment, the threshold is 100%.

  Next, when the sum calculated in step S33 is equal to or greater than the threshold (step S34; YES), the determination unit 243 indicates on the display unit 230 that the maintenance operation is performed because the maintenance operation start condition is satisfied. It is displayed (step S35).

  FIG. 8A illustrates the display mode of the display unit 230 in step S35. In this way, the display unit 230 shows not only that the maintenance operation is performed, but also that the total index that is the sum of the power failure probability index and the elapsed period length index is 100% or more, and a specific value of the total index. And the values of the power outage probability index and the elapsed period length index as the breakdown are displayed. For this reason, the user can grasp the cause of the performance of the maintenance operation.

  Returning to FIG. 7, after step S <b> 35, the control command output unit 244 outputs a control command CS for performing the maintenance operation to the generator 100 (step S <b> 36). Thereby, in the generator 100, maintenance operation is performed for a fixed period.

  Next, the elapsed period length index specifying unit 242 records the date when the maintenance operation was performed in step S36 as the maintenance operation performance date data 222 shown in FIG. 2, thereby updating the maintenance operation performance date data 222 ( Step S37). Then, it returns to step S31 again.

  On the other hand, if the sum calculated in step S33 is less than the threshold value (step S34; NO), the determination unit 243 displays on the display unit 230 that the maintenance operation is not yet performed because the maintenance operation start condition is not satisfied. (Step S38), it returns to Step S31 again. In this case, the output of the control command CS to the generator 100 by the control command output unit 244 is postponed.

  FIG. 8B illustrates the display mode of the display unit 230 in step S38. As described above, the display unit 230 displays not only the specific content of the maintenance operation start condition, that is, the maintenance operation is performed when the index total reaches 100%, but also the specific value of the current index total, The values of the power outage probability index and the elapsed period length index as the breakdown are displayed.

  For this reason, the user can grasp the reason why the maintenance operation is not yet performed, and can grasp the degree of necessity of the maintenance operation at present by the index sum.

  As described above, according to the present embodiment, the power failure probability index indicating the degree of necessity of maintenance operation determined by the degree of disaster and the degree of necessity of maintenance operation determined by the length of the elapsed period from the previous maintenance operation. Whether or not to perform maintenance operation is determined in consideration of both the elapsed period length index that represents. For this reason, as a result of optimizing the timing for performing the maintenance operation, the following effects can be obtained.

  That is, according to the present embodiment, even if the power failure probability index represents the occurrence of a disaster, the determination unit 243 determines that the maintenance operation start condition is not satisfied, and the control command CS of the control command output unit 244 The output may be postponed. Specifically, as shown in FIG. 8B, even when the power failure probability index takes a numerical value exceeding zero, if the sum of the elapsed period length index is less than the threshold value of 100%, the maintenance operation is performed. Since the start condition is not satisfied, the output of the control command CS by the control command output unit 244 is postponed.

  As described above, when the degree of disaster is relatively small and the elapsed period length from the previous maintenance operation is less than 30 days, which is the maximum allowable period length, the maintenance operation is postponed. For this reason, compared with the prior art which started the generator 100 unconditionally when a disaster occurs, execution of the maintenance operation at an excessive frequency can be suppressed.

  Further, the elapsed period length index takes a value equal to the above-described threshold value of 100% when the elapsed period length from the previous maintenance operation has reached 30 days, which is the maximum allowable period length.

  Therefore, when the elapsed period length from the previous maintenance operation has reached 30 days, the sum of the elapsed period length index and an arbitrary power failure probability index is determined by the determination unit 243 to satisfy the maintenance operation start condition. The control command CS is output to the generator 100 by the control command output unit 244. For this reason, it is prevented that the interval between the maintenance operation and the next maintenance operation is more than 30 days.

  In addition, the power outage probability index indicates that when the degree of disaster that has occurred is a predetermined level or higher, specifically, as shown in FIG. When the activity level is 4 or more, it takes a value equal to the above-mentioned threshold value of 100%.

  Therefore, when a disaster exceeding a certain level occurs, the sum of an arbitrary elapsed period length index and a power failure probability index is determined by the determination unit 243 to satisfy the maintenance operation start condition, and the control command output unit 244 A control command CS is output to the generator 100. For this reason, when a disaster exceeding a certain level occurs, maintenance operation is always performed.

[Embodiment 2]
In the first embodiment, when the determination unit 243 determines that the maintenance operation needs to be performed, the generator 100 performs the maintenance operation for a certain period, but a power failure occurred during the maintenance operation. In this case, power transmission to the load LD may be started while the operation of the generator 100 is maintained. Specific examples thereof will be described below.

  As shown in FIG. 9, in the present embodiment, the control command output unit 244 outputs the control command CS to the generator 100 through the above-described step S35 and the maintenance operation is started (step S41). The output unit 244 determines whether or not a power failure has occurred in the commercial power supply (step S42).

  When no power failure has occurred in the commercial power supply (step S42; NO), the control command output unit 244 determines whether or not a predetermined period of time that is predetermined as the length of the maintenance operation has elapsed (step S43). If the fixed period has not yet elapsed (step S43; NO), the process returns to step S42.

  On the other hand, when the predetermined period has elapsed (step S43; YES), the control command output unit 244 outputs an end command for ending the maintenance operation to the generator 100, thereby ending the maintenance operation. (Step S44). Thereafter, the process proceeds to step S37 described above.

  On the other hand, when a power failure occurs in the commercial power source in step S42 (step S42; YES), the control command output unit 244 performs control to cause the generator 100 to transmit power to the load LD until the power failure is resolved (step S42). S45), the process proceeds to the above-described step S37.

  In addition, when the maintenance operation is started in a non-connected state in which transmission of power from the prime mover 120 illustrated in FIG. 1 to the power generation mechanism 110 is interrupted in step S41, when YES is determined in step S42, The control command output unit 244 switches the generator 100 to a connected state in which power is transmitted from the prime mover 120 to the power generation mechanism 110 illustrated in FIG. 1, thereby enabling power transmission from the generator 100 to the load LD.

  According to the present embodiment, when a power failure occurs after the maintenance operation of the generator 100 is started, power transmission to the load LD is started while the operation of the generator 100 is maintained. For this reason, the period from the occurrence of a power failure to the start of power transmission from the generator 100 to the load LD can be kept short. Other configurations and effects are the same as those of the first embodiment.

[Embodiment 3]
In the first embodiment, as illustrated in FIG. 4, the generator control device 200 includes the power failure probability index specifying unit 241 as the power failure probability index specifying unit. Devices other than 200 may be provided. Specific examples thereof will be described below.

  As shown in FIG. 10, the power generation system 500 according to the present embodiment includes a power failure probability index specifying device 400 as a power failure probability index specifying unit. The power failure probability index specifying device 400 plays the same role as the power failure probability index specifying unit 241 shown in FIG. That is, the power failure probability index specifying device 400 receives the disaster warning data DT from the disaster warning system group DS, and performs a power failure probability index specifying process for specifying the power failure probability index using the received disaster warning data DT.

  Further, the power generation system 500 according to the present embodiment includes a plurality of, specifically, three generator control devices 200A, 200B, and 200C, a generator 100A controlled by the generator control device 200A, and a generator A generator 100B controlled by the control device 200B and a generator 100C controlled by the generator control device 200C are provided.

  The power failure probability index specifying device 400 functions as a power failure probability index specifying means common to the three generator control devices 200A, 200B, and 200C. Therefore, each of the three generator control devices 200A, 200B, and 200C has a configuration in which the power failure probability index specifying unit 241 shown in FIG. 4 is omitted from the generator control device 200 shown in FIG.

  In addition, each of generator 100A, 100B, and 100C is provided with the same structure as the generator 100 shown in FIG. The generator 100A supplies power to the load LDA, the generator 100B supplies power to the load LDB, and the generator 100C supplies power to the load LDC. The loads LDA, LDB, and LDC are arranged in different areas.

  The power failure probability index specifying device 400 generates the three power failure probability data SA, SB, SC using the disaster early warning data DT, and outputs them to the generator control devices 200A, 200B, 200C through the communication line NE.

  The power outage probability data SA includes a power outage probability index representing the probability that the commercial power supply that supplies power to the load LDA will be out of power. The power outage probability data SB includes a power outage probability index representing the probability that the commercial power supply that supplies power to the load LDB will be out of power. The power failure probability data SC includes a power failure probability index that represents the probability that a commercial power source that supplies power to the load LDC will be subjected to a power failure.

  The determination unit 243 of FIG. 4 constituting the generator control device 200A receives the power failure probability data SA, thereby acquiring the power failure probability index included in the power failure probability data SA. The determination unit 243 of FIG. 4 configuring the generator control device 200B receives the power outage probability data SB, thereby acquiring the power outage probability index included in the power outage probability data SB. The determination unit 243 of FIG. 4 configuring the generator control device 200C receives the power outage probability data SC, thereby acquiring a power outage probability index included in the power outage probability data SC.

  The disaster bulletin data DT is obtained by associating the degree of disaster in each area where the disaster occurred. The probability that a power outage will occur due to a disaster may vary depending on the region where the loads LDA, LDB, and LDC are located. Therefore, the power failure probability index identification device 400 generates the power failure probability data SA, SB, and SC for each region where the loads LDA, LDB, and LDC are arranged using the disaster early warning data DT.

  According to the present embodiment, each of the generator control devices 200A, 200B, and 200C does not have to have the function of the power failure probability index specifying means for specifying the power failure probability index, and therefore the generator control devices 200A, 200B, and The configuration of 200C can be simplified. Other configurations and effects are the same as those of the first embodiment.

[Embodiment 4]
In the first embodiment, the configuration in which the generator control device 200 is installed in the same place as the generator 100 without using the communication line NE is exemplified. The generator control device 200 may be installed at a location different from the location where the generator 100 is installed. Specific examples thereof will be described below.

  As shown in FIG. 11, in the power generation system 600 according to the present embodiment, the generator control device 200 is installed at a location different from the location where the generator 100 is installed via the communication line NE. The generator control device 200 controls the performance of the maintenance operation of the generator 100 from a remote location via the communication line NE.

  According to this embodiment, it is not necessary to arrange the generator control device 200 at a place where the generator 100 is installed. As in the case of the third embodiment, a plurality of generators 100 are provided, and one generator control device 200 can remotely control the execution of maintenance operation in each of the plurality of generators 100. Good. Other configurations and effects are the same as those of the first embodiment.

  The embodiment of the present invention has been described above. The present invention is not limited to this, and modifications described below are possible.

  In the first embodiment, the case where the combination of the elapsed period length information and the power outage probability information is the sum of the elapsed period length index and the power outage probability index is described. However, the elapsed period length index, the power outage probability index, and the threshold value Depending on the method of definition, the combination of elapsed period length information and outage probability information is the difference between the elapsed period length index and the outage probability index, the product, or the quotient, or the two variables of elapsed period length index and outage probability index. It may be a function.

  As a specific example, when the elapsed period length index is a larger value when the elapsed period from the previous maintenance operation is shallower, or when the power outage probability index is an index that takes a larger value as the degree of disaster is smaller The combination of the elapsed period length information and the power failure probability information may be a difference between the elapsed period length index and the power failure probability index.

  Further, the elapsed period length information may be information indicating the elapsed period length from the previous maintenance operation, and may not necessarily be an index that takes a numerical value. Similarly, the power outage probability information only needs to represent whether or not a disaster that may cause a power outage has occurred, and the occurrence probability of a power outage caused by the disaster in the event of a disaster. It does not have to be an exponent.

  As one specific example, when each of the elapsed period length information and the power failure probability information is a symbol, a table defining which combination among all the combinations of the symbols satisfies the maintenance operation start condition is provided. Thus, the determination performed by the determination unit 243 can be realized.

  In the first embodiment, the disaster warning data DT received by the power failure probability index specifying unit 241 represents the occurrence and degree of lightning or earthquake, but the disaster warning data DT relates to disasters other than these. May be. As a specific example, the disaster bulletin data DT may represent the occurrence and extent of a typhoon, tsunami, or flood.

  In the first embodiment, the elapsed period length index specifying unit 242 measures the elapsed period length from the previous maintenance operation of the generator 100 in units of “day”. However, the “hour”, “minute”, Or you may measure in the unit of "second". Further, the maximum allowable period length is not necessarily limited to 30 days, and may be a period of less than 30 days.

  In the first embodiment, the prime mover 120 is configured by an engine, but the prime mover 120 is not particularly limited as long as it is an engine that generates kinetic energy converted into electric power. As a specific example, the prime mover 120 may be a gas turbine in addition to an engine such as a diesel engine, a gasoline engine, or a gas engine. In addition, the communication line NE shown in FIGS. 1, 10, and 11 may be a dedicated line or a public communication line.

  The generator control device 200 according to each of the above embodiments can be realized by an existing computer. That is, by installing the generator control program 221 shown in FIG. 2 in the computer, the computer can function as the generator control device 200. The generator control program 221 may be distributed through a communication network, or may be stored in a computer-readable recording medium and distributed.

  100, 100A, 100B, 100C ... generator, 110 ... power generation mechanism, 120 ... prime mover, 200, 200A, 200B, 200C ... generator control device, 210 ... communication unit, 220 ... auxiliary storage unit, 221 ... generator control Program, 222 ... maintenance operation performance date data, 223 ... blackout probability index specifying table, 230 ... display unit, 240 ... CPU, 241 ... blackout probability index specifying unit (blackout probability information specifying means), 242 ... elapsed period length index specifying unit (Elapsed period length information specifying means), 243 ... determination section (determination means), 244 ... control command output section (control command output means), 250 ... main storage section, 300, 500, 600 ... power generation system, 400 ... power failure probability Index specifying device (power failure probability index specifying means), CS ... control command, DS ... disaster warning system group, DS1 ... lightning warning system, DS2 ... Shin breaking system, DT ... disaster preliminary data, LD, LDA, LDB, LDC ... load, NE ... communication line, SA, SB, SC ... a power failure probability data.

Claims (6)

When a power failure occurs in the commercial power source, the generator that supplies power to the load in place of the commercial power source and performs a maintenance operation that is a maintenance operation during a period when the commercial power source is healthy is controlled. A generator control device,
Elapsed period length information representing the elapsed period length from the previous maintenance operation performed by the generator, whether or not a disaster that may cause the power failure has occurred, and the disaster when the disaster has occurred Power outage probability information representing the probability of occurrence of the power outage due to the power outage, and the combination of the acquired elapsed period length information and the power outage probability information needs to cause the generator to perform the maintenance operation. Determining means for determining whether or not a predetermined maintenance operation start condition is satisfied,
When the determination unit determines that the combination satisfies the maintenance operation start condition, a control command for performing the maintenance operation is output to the generator, and the determination unit causes the combination to start the maintenance operation. If it is determined that the condition is not satisfied, control command output means for foreseeing the output of the control command to the generator;
With
In the combination, even if the power failure probability information represents the occurrence of the disaster, there is one that is determined by the determination unit as not satisfying the maintenance operation start condition,
When the elapsed period length has reached a predetermined maximum allowable period length, the combination of the elapsed period length information and any of the power outage probability information is determined by the determination means by the maintenance operation start condition. Determined to satisfy
Generator control device. The elapsed period length information is an index that takes a larger value as the elapsed period length is longer,
The power outage probability information is an index that takes a larger numerical value as the probability of occurrence of the power outage is higher, and can specify whether or not the disaster has occurred by the numerical value,
The combination of the elapsed period length information and the outage probability information refers to the sum of the index represented by the outage probability information and the index represented by the elapsed period length information,
The maintenance operation start condition refers to a condition in which the sum is equal to or greater than a predetermined threshold as representing that the generator needs to perform the maintenance operation.
The generator control device according to claim 1. Receives disaster early warning data representing the occurrence of a disaster and the extent of the disaster that occurred, identifies the power outage probability information using the received disaster early warning data, and gives the determined power outage probability information to the determination means Information identification means,
The generator control device according to claim 1, further comprising: The elapsed period length from the maintenance operation performed last time of the generator is obtained, the elapsed period length information is identified based on the obtained elapsed period length, and the identified elapsed period length information is stored in the determination unit. Means for specifying the elapsed period length information,
The generator control device according to any one of claims 1 to 3, further comprising: The generator control device according to any one of claims 1 to 4,
The generator controlled by the generator controller;
A power generation system. When a power failure occurs in the commercial power source, the generator that supplies power to the load in place of the commercial power source and performs a maintenance operation that is a maintenance operation during a period when the commercial power source is healthy is controlled. A generator control method comprising:
Elapsed period length information representing the elapsed period length from the previous maintenance operation performed by the generator, whether or not a disaster that may cause the power failure has occurred, and the disaster when the disaster has occurred The power outage probability information representing the occurrence probability of the power outage due to the power outage is obtained, and the degree of necessity of causing the generator to perform the maintenance operation using the acquired elapsed period length information and the power outage probability information. A specific step of identifying a numerical value to be represented;
Performing the maintenance operation on the generator based on a comparison between the numerical value identified in the identifying step and a predetermined threshold value indicating that the generator needs to perform the maintenance operation. A determination step for determining whether or not to perform,
A generator control method.