WO2019111368A1 - Evaluation device - Google Patents

Abstract

Provided is an evaluation device comprising: a data collection part that collects information relating to control of a drive part of a plant; and an optimal value calculation part that uses the collected information to calculate an optimal energy use quantity of the drive part as an energy use quantity after an energy conservation plan is put into effect. According to this configuration, the evaluation device can, in a period prior to putting an energy conservation plan into effect, compare an energy use quantity after the energy conservation plan is put into effect with an energy use quantity in the event that the energy conservation plan is not carried out and evaluate the effect of energy conservation control.

Description

Evaluation device

An embodiment of the present invention relates to an evaluation device for evaluating the effect of energy saving control in a plant.

For example, in the operation of a plant such as a rolling plant, energy saving control is performed to suppress consumption of electric power. In addition, during the period after energy saving measures, it is possible to estimate plant operation when energy saving measures are not implemented, compare the estimated plant operation with actual plant operation after energy saving measures, and evaluate the effect of energy saving control. There is known an evaluation device that is configured as described above (for example, Patent Document 1).

In the evaluation device, the energy saving effect can be evaluated by comparing the energy use result when the energy saving countermeasure is applied and the estimated value of the energy use when the energy saving countermeasure is not performed in the period after the energy saving countermeasure. On the other hand, in the period before the energy saving measures, the energy saving effect can not be evaluated by comparing the energy usage after the energy saving measures with the energy using without the energy saving measures. There was room left.

JP 2012-38054 A

The embodiment of the present invention may evaluate the effect of energy saving control by comparing the amount of energy used after the energy saving with the amount of energy used when the energy saving is not performed in the period before the energy saving countermeasure. Provide an evaluation device that can

According to an embodiment of the present invention, a data collection unit that collects information related to control of a drive unit of a plant, and an optimal energy usage of the drive unit based on the collected information, energy after energy saving measures There is provided an evaluation device comprising: an optimum value calculation unit which calculates as a usage amount.

According to the embodiment of the present invention, it is possible to evaluate the energy saving effect by comparing the amount of energy used after the energy saving measures with the amount of energy used when the energy saving measures are not performed in the period before the energy saving measures. An evaluation device capable of

It is a block diagram showing an evaluation device concerning an embodiment typically. It is a block diagram showing the plant pump system concerning an embodiment typically. It is a flowchart which represents typically the specific example of operation | movement of the optimal value calculation part which concerns on embodiment.

Hereinafter, each embodiment will be described with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the ratio of sizes between parts, and the like are not necessarily the same as the actual ones. In addition, even in the case of representing the same portion, the dimensions and ratios may be different from one another depending on the drawings.
In the specification of the present application and the drawings, the same elements as those described above with reference to the drawings are denoted by the same reference numerals, and the detailed description will be appropriately omitted.

FIG. 1 is a block diagram schematically showing an evaluation device according to the embodiment.
As shown in FIG. 1, the evaluation device 10 displays the data collection unit 12, the optimum value calculation unit 14, the optimum value storage unit 16, the actual usage amount calculation unit 18, the actual usage amount storage unit 20, and the display. And 22. These units may be provided in one device or may be provided as independent devices and connected to each other via a network or the like.

The evaluation device 10 is connected to a plant pump system 100 of a rolling plant. The evaluation device 10 enables evaluation of the effect of energy saving control in the plant pump system 100 of the rolling plant.

The plant pump system 100 is, for example, a pump system of a descaling system that removes foreign matter such as scales attached to the surface of the material to be rolled by injecting high-pressure water toward the material to be rolled. The plant pump system 100 may be, for example, a pump system of a cooling system that supplies cooling water to a material to be rolled to cool the material to be rolled.

FIG. 2 is a block diagram schematically showing a plant pump system according to the embodiment.
As shown in FIG. 2, the plant pump system 100 includes a pump 102, a drive unit 104, a valve 106, and a control unit 108. In addition, in FIG. 2, the arrow on a piping path represents the flow direction of water.

The pump 102 is connected to the fluid source WS. The fluid source WS is, for example, a water supply source that supplies water. The pump 102 is also connected to the drive unit 104. The driving unit 104 supplies driving force to the pump 102. The pump 102 is driven in response to the supply of the driving force from the drive unit 104 to supply the water of the fluid supply WS with a predetermined pressure and a predetermined flow rate and supply it downstream. The pump 102 supplies high-pressure water to a descaling header or the like according to the drive of the drive unit 104, for example.

For example, a centrifugal pump is used for the pump 102. For example, an electric motor is used for the drive unit 104. The driving unit 104 supplies a driving force for rotating the impeller of the pump 102 to the pump 102, and drives the pump 102 by rotating the impeller. The supply of the driving force to the pump 102 is not limited to the electric motor, and another power source such as a hydraulic actuator may be used, for example. The drive unit 104 may be selected according to the type of the pump 102. In addition, the drive unit 104 may be incorporated in the pump 102.

The drive unit 104 is electrically connected to the control unit 108. The control unit 108 controls the operation of the drive unit 104. For example, when the drive unit 104 is an electric motor, the control unit 108 controls the number of rotations of the drive unit 104 by the voltage applied to the drive unit 104. Thus, the control unit 108 controls the drive of the pump 102. In other words, the control unit 108 controls the pressure of high-pressure water supplied to the descaling header and the like.

The valve 106 is provided on the piping path downstream of the pump 102. The valve 106 is connected to the control unit 108. The valve 106 controls the opening and closing of the piping route based on the control of the control unit 108. Thereby, the valve 106 controls the supply of high pressure water to the descaling header and the like and the stop of the supply. As the valve 106, for example, a relief valve or a minimum flow valve is used.

A plurality of each of the pump 102, the drive unit 104, and the valve 106 are provided in the plant pump system 100. In the plant pump system 100, the pressure of high pressure water is controlled by driving a plurality of pumps 102. In the plant pump system 100, energy saving is achieved by controlling the operation of each pump 102 and each drive unit 104 according to the necessary pressure. The number of pumps 102 etc. provided in the plant pump system 100 may be arbitrarily set according to the required pressure. The number of pumps 102 etc. provided in the plant pump system 100 may be one, for example. Energy saving may be achieved by switching between high-speed operation and standby operation of one pump 102.

For each of the plurality of pumps 102, for example, pumps of the same rating are used. Similarly, for each of the plurality of drive units 104, for example, drive units (motors) having the same rating are used. Thereby, for example, variation in pressure of water supplied from each pump 102 is suppressed.

The data collection unit 12 of the evaluation device 10 collects information on control of each drive unit 104 from the plant pump system 100. The data collection unit 12 is connected to the plant pump system 100 via the communication line 120, and collects information via the communication line 120. The communication line 120 may be wired or may be wireless.

The data collection unit 12 collects, for example, at least the piping valve information 140, the material to be rolled position information 142, and the material to be rolled material information 144. The data collection unit 12 collects, for example, the above pieces of information from the control unit 108 of the plant pump system 100. In other words, the control unit 108 uploads each information to the data collection unit 12 and inputs each information to the data collection unit 12. The data collection unit 12 may collect each of the above information from, for example, a higher-level controller that controls the operation of the control unit 108.

The piping valve information 140 is information representing the opening and closing of each valve 106. The material-to-be-rolled position information 142 is information indicating the position on the rolling line of the material to be rolled. The material-to-be-rolled position information 142 uses, for example, a point extracted from the heating furnace as a starting point. The material-to-be-rolled material information 144 indicates the material of the material to be rolled. The material-to-be-rolled material information 144 represents, for example, physical properties such as surface and strength when each material to be rolled becomes a final product. The material of the material to be rolled is already determined before rolling of the material to be rolled. However, the information collected by the data collection unit 12 is not limited to the above, and may be any other information related to the control of the other drive unit 104.

The optimum value calculation unit 14 calculates an optimum flow rate satisfying the desired physical performance for the material to be rolled, from the collected piping valve information 140, the material to be rolled position information 142 and the material to be rolled material information 144. Then, the optimum value calculation unit 14 calculates the optimum value of the required energy consumption from the calculated optimum flow rate. The optimal value calculation unit 14 converts the optimal energy usage into minutes, hours, days, months, and years, for example, and calculates the optimal energy usage as the energy usage after energy saving measures. Make it memorize in 16.

The actual usage amount calculation unit 18 calculates an actual energy usage amount from the piping valve information 140 collected by the data collection unit 12, the material-to-be-rolled information 142, and the material-to-rolled material information 144. The actual usage amount calculation unit 18 stores the calculated actual energy usage amount in the actual usage amount storage unit 20 as the energy usage amount before energy saving measures. For example, the actual usage amount calculation unit 18 links the calculated actual energy usage amount with information obtained by finely classifying the operation data of each pump 102, and stores the link in the actual usage amount storage unit 20.

The display unit 22 reads the optimum energy usage stored in the optimum value storage unit 16 and the actual energy usage stored in the actual usage storage unit 20, and the optimum energy usage and the actual energy Display the usage amount in a comparable manner. The display unit 22 has, for example, a screen, and displays the optimal energy usage and the actual energy usage on the screen in a comparable manner.

The optimum energy usage stored in the optimum value storage unit 16 is, in other words, the energy usage after energy saving measures. The actual energy usage amount stored in the actual usage amount storage unit 20 is, in other words, the energy usage amount before energy saving measures. Therefore, the effect of the energy saving control can be visualized by comparing and displaying the optimal energy usage and the actual energy usage.

FIG. 3 is a flowchart schematically showing a specific example of the operation of the optimum value calculation unit according to the embodiment.
As shown in FIG. 3, when the optimum value calculation unit 14 calculates the optimum energy usage amount, first, the piping valve information 140, the material position information 142 to be rolled, and the material information 144 to be rolled are data collection units 12 in real time (step S01 in FIG. 3).

After collecting the respective information, the optimum value calculation unit 14 calculates the total actual flow rate of the plant pump system 100 from the open / close data represented by the piping valve information 140 and the rated flow rate data of each pump 102 stored in advance (see FIG. Step S02 of 3).

The optimum value calculating unit 14 calculates the optimum pump rotational speed of each pump 102 from the calculated total actual flow rate and the pump characteristic information of each pump 102 stored in advance (step S03 in FIG. 3). The pump characteristic information is, for example, a performance diagram representing the relationship among the discharge amount, pressure, rotational speed and the like of each pump 102.

The optimum value calculator 14 calculates the power necessary for the optimum pump rotational speed from the calculated optimum pump rotational speed (step S04 in FIG. 3).

The optimum value calculation unit 14 calculates the amount of energy used (amount of power) by aggregating the calculated power in the period of minutes, hours, days, months, and years (step S05 in FIG. 3).

Then, the optimum value calculation unit 14 stores the calculated energy usage amount in the optimum value storage unit 16 as the optimum energy usage amount after energy saving measures (step S06 in FIG. 3). For example, the optimum value calculation unit 14 stores the calculated energy usage amount in the optimum value storage unit 16 by linking it with the material position information 142 and material information 144 to be rolled.

Next, a specific example of the actual usage amount calculation unit 18 will be described.
The actual usage amount calculation unit 18 classifies a combination of operation data of the pumps 102 based on, for example, open / close data represented by the piping valve information 140 collected by the data collection unit 12. Then, the actual usage amount calculation unit 18 calculates the amount of energy used before energy saving measures from the piping valve information 140 collected by the data collection unit 12, the rolled material position information 142, and the rolled material information 144, It is linked with the classification of the combination of operation data of each pump 102 and stored in the actual usage amount storage unit 20.

For example, the actual usage amount calculation unit 18 refers to the actual usage amount storage unit 20 and finds out the energy usage amount of the same operation pattern from the actual usage amount storage unit 20, thereby enabling the energy usage amount to be the energy before energy saving measures. Estimated as usage.

Thus, in the evaluation device 10 according to the present embodiment, the optimum energy usage stored in the optimum value storage unit 16 is compared with the actual energy usage stored in the actual usage storage unit 20. Can be displayed on the display unit 22. Thus, the evaluation device 10 can evaluate the energy saving effect by comparing the amount of energy used after the energy saving with the amount of energy used when the energy saving was not performed in the period before the energy saving. .

In addition, in this embodiment, although the rolling plant was demonstrated to the example, the plant may be any other plant which supplies a fluid via piping using one or several pump.

Moreover, although the drive part 104 which drives the pump 102 was demonstrated to the example in this embodiment, the drive part may be any other drive part in connection with operation | movement of a plant. For example, the drive unit may be a drive unit for driving a fan that cools a material to be rolled in a rolling plant.

The embodiments of the present invention have been described above with reference to specific examples. However, embodiments of the present invention are not limited to these specific examples. For example, with respect to the specific configuration of each element such as a data collection unit, an optimum value calculation unit, an optimum value storage unit, an actual usage amount calculation unit, an actual usage amount storage unit, and a display unit included in the evaluation device, those skilled in the art The present invention is similarly included in the scope of the present invention as long as the present invention can be similarly practiced and the same effect can be obtained by appropriately selecting from known ranges.
Moreover, what combined any two or more elements of each specific example in the technically possible range is also included in the scope of the present invention as long as the gist of the present invention is included.

In addition, all evaluation devices that can be appropriately designed and implemented by those skilled in the art based on the evaluation device described above as the embodiment of the present invention also fall within the scope of the present invention as long as including the scope of the present invention. .

Besides, within the scope of the concept of the present invention, those skilled in the art can conceive of various changes and modifications, and it is understood that the changes and modifications are also within the scope of the present invention. .

While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Claims (4)

A data collection unit that collects information related to control of the drive unit of the plant;
An optimal value calculation unit that calculates the optimal energy usage of the drive unit as the energy usage after energy saving measures based on the collected information;
Evaluation device equipped with An optimum value storage unit that stores the amount of energy used after the energy saving measures;
An actual usage calculation unit that calculates an actual energy usage as the energy usage before energy saving measures based on the collected information;
An actual usage storage unit for storing the energy usage before the energy saving measures;
A display unit that displays the energy consumption after the energy saving measures and the energy consumption before the energy saving measures in a comparable manner;
The evaluation device according to claim 1, further comprising: The plant is a rolling plant for rolling a material to be rolled,
The rolling plant has a pump for supplying water to the material to be rolled, and a valve for switching between the supply of water to the material to be rolled and the stop of the supply.
The drive unit drives a pump of the rolling plant;
The data collection unit includes piping valve information indicating opening and closing of the valve, material to be rolled indicating position of the material to be rolled on the rolling line, and material information on material to be rolled indicating material of the material to be rolled And at least collect
The optimum value calculation unit calculates an actual flow rate of the rolling plant based on the piping valve information, the material position information to be rolled, and the material information to be rolled material, and is optimum for the actual flow rate of the rolling plant The evaluation device according to claim 1 or 2, wherein the energy consumption amount is calculated as the energy consumption amount after the energy saving measure. The evaluation device according to any one of claims 1 to 3, wherein the data collection unit is connected to the plant via a communication line, and collects the information via the communication line.

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