CN108599379A - A power monitoring system for microgrid group - Google Patents

Abstract

The embodiment of the invention discloses a power monitoring system for a microgrid group, wherein a monitoring object is the microgrid group, the power monitoring system can monitor the power of a plurality of microgrids in the microgrid group through a monitoring main station and a plurality of local monitoring substations, the monitoring main station can perform information interaction with an external system, receive an active power regulation and control strategy and a voltage/reactive power regulation and control strategy and issue the regulation and control strategy to a specific local monitoring substation corresponding to the microgrid, and the local monitoring substation controls corresponding equipment in the microgrid, so that the requirements of basic functions of energy management, coordination control, protection, communication and the like of the microgrid and the microgrid group are met.

Description

A power monitoring system for microgrid group

technical field

The invention relates to the technical field of microgrid group monitoring, in particular to a power monitoring system for a microgrid group.

Background technique

Energy is the basis for the survival and development of human beings, while traditional coal, oil and other primary energy sources are non-renewable. Efficiency, development of new energy, and strengthening the use of renewable energy have become inevitable choices.

As an autonomous system that can realize self-control and management, the microgrid can effectively absorb the output of intermittent and distributed renewable energy generation while improving the reliability of power supply for users.

The micro-grid group has a wide range of application prospects. It can be used not only in land power supply systems, but also in island or archipelago power supply systems far away from the mainland. It can comprehensively utilize new energy sources such as solar energy and wind energy, and effectively protect the ecological environment. Improve the reliability of power supply on the user side, solve the power supply problems in remote mountainous areas and islands, and help improve the optimal regulation and disaster recovery capabilities of smart distribution networks. When two or more microgrids appear in a specific area, electrical, control, information and other connections are established between the microgrids for a common goal, and the formed community system is called a microgrid group for short. In the development process of micro-grid, a certain scale of micro-grid group will be formed.

Most of the existing technologies related to microgrid monitoring focus on a single microgrid, and the monitoring object is the output of distributed power sources in the microgrid, and aims to formulate power supply strategies. With the development of microgrid groups, using local monitoring methods for individual microgrids to monitor the operation of microgrids, or to monitor the output of distributed power sources, is not enough to meet the needs of energy management and coordination of microgrids and microgrid groups. Therefore, it is necessary to propose a power monitoring system for microgrid groups.

Contents of the invention

The invention provides a power monitoring system for a micro-grid group, which meets the requirements for basic functions such as energy management, coordinated control, protection and communication of the micro-grid and the micro-grid group.

The invention provides a power monitoring system for a microgrid group, including:

Monitor the main station, local monitoring sub-station and communication system;

The monitoring master station is connected to the local monitoring sub-station through the communication system;

The monitoring master station includes:

The first data collection and processing module is used to collect analog signal data and state signal data of the grid-connected point of the microgrid, and analyze and process the analog signal data and state signal data;

The information interaction module is used for information interaction with external systems, receiving active power control strategies and voltage/reactive power control strategies;

The first active power control module is configured to issue an active power control command according to the active power regulation strategy received by the information interaction module;

The first voltage/reactive power adjustment module is configured to issue a voltage/reactive power adjustment instruction according to the voltage/reactive power adjustment strategy received by the information interaction module;

The on-site monitoring sub-station includes:

The second data collection and processing module is used to collect the operation data and operation state data of the microgrid, and analyze and process the operation data and operation state data;

The second active power control module is used to generate control instructions for power generation equipment or energy storage equipment in the microgrid according to the active power control instructions issued by the monitoring master station;

The second voltage/reactive power adjustment module is used to generate distributed power sources, reactive power compensation devices, and energy storage devices that control reactive power in the microgrid according to the voltage/reactive power adjustment instructions issued by the monitoring master station Control instructions for equipment or on-load tap changer transformers;

The equipment control module is respectively connected with the second active power control module and the second voltage/reactive power adjustment module, and is used to control the power generation equipment in the microgrid and the reactive power controllable equipment in the microgrid The control instructions operate on the corresponding power generation equipment, energy storage equipment, reactive power controllable distributed power supply, reactive power compensation device, energy storage equipment or on-load tap changer.

Optionally, the monitoring master station also includes:

The first storage module is connected with the first data collection and processing module, and is used for storing the collected analog signal data and state signal data of the grid-connected points of the microgrid.

Optionally, the local monitoring sub-station also includes:

The second storage module is connected with the second data collection and processing module, and is used for storing the collected operation data and operation state data of the microgrid.

Optionally, the monitoring master station also includes:

The first operation mode control module is configured to issue a first mode switching instruction to the microgrid, and perform switching control of the on-grid/off-grid operation mode of the microgrid;

The on-site monitoring sub-station also includes:

The second operating mode control module is connected with the equipment control module, and is used to generate distributed power sources and energy storage that control the corresponding reactive power in the microgrid according to the first mode switching instruction issued by the monitoring master station A second mode switching command of the equipment or grid-connected interface device;

The equipment control module is configured to operate the corresponding reactive power controllable distributed power supply, energy storage equipment or grid-connected interface device according to the second mode switching finger.

Optionally, the monitoring master station also includes:

The communication network monitoring module is used to monitor the operating condition of the communication channel.

Optionally, the monitoring master station also includes:

The system and network management module is used to display the operating status, CPU load rate and hard disk remaining space information of each server, workstation, application software and network of the monitoring master station, and has authority management and abnormal information alarm functions.

Optionally, the local monitoring sub-station also includes:

The anti-misoperation locking module is used to provide an anti-misoperation locking function.

Optionally, the local monitoring sub-station also includes:

The start-stop control module is connected with the equipment control module, and is used to send the start-stop control instructions for the equipment in the microgrid to the equipment control module according to the preset order and process, so as to realize the grid-connected startup and parallelization of the microgrid On-grid stop, off-grid start and off-grid stop functions.

Optionally, the local monitoring sub-station also includes:

The power quality detection and analysis module is used to monitor and record the power quality information of the grid-connected points of the micro-grid, and report the power quality information of the grid-connected points of the micro-grid to the monitoring master station.

Optionally, the on-site monitoring sub-station connected to the microgrid lower than the preset voltage level is connected to the monitoring master station through wireless communication, and the monitoring master station also includes A safe access area, and a safety isolation device is also set between the safe access area and other modules of the monitoring master station;

The on-site monitoring sub-station connected to the microgrid not lower than the preset voltage level is connected to the monitoring master station through optical fiber communication.

As can be seen from the above technical solutions, the present invention has the following advantages:

The present invention provides a power monitoring system for a microgrid group, comprising: a monitoring master station, an on-site monitoring sub-station and a communication system; the communication between the monitoring master station and the on-site monitoring sub-station System connection; the monitoring master station includes: a first data acquisition and processing module, which is used to collect analog signal data and state signal data of the grid-connected point of the microgrid, and analyze and analyze the analog signal data and state signal data Processing; information interaction module, used for information interaction with external systems, receiving active power regulation strategy and voltage/reactive power regulation strategy; first active power control module, used for regulation and control of active power according to the information interaction module received strategy, to issue an active power control command; the first voltage/reactive power adjustment module is used to issue a voltage/reactive power adjustment command according to the voltage/reactive power control strategy received by the information interaction module; The local monitoring substation includes: a second data acquisition and processing module, used to collect the operating data and operating state data of the microgrid, and analyze and process the operating data and operating state data; the second active power control module is used to Generate a control command for the power generation equipment or energy storage equipment in the microgrid according to the active power control command issued by the monitoring master station; the second voltage/reactive power adjustment module is used for according to the voltage issued by the monitoring master station /Reactive power adjustment command generates control commands for distributed power sources, reactive power compensation devices, energy storage equipment or on-load voltage regulating transformers with controllable reactive power in the microgrid; the equipment control module is respectively connected with the second active power The power control module is connected to the second voltage/reactive power adjustment module, and is used to control the corresponding power generation equipment and energy storage according to the control instructions for the power generation equipment in the microgrid and the control instructions for the reactive power controllable equipment in the microgrid. equipment, distributed power sources with controllable reactive power, reactive power compensation devices, energy storage devices or on-load tap changer transformers.

The invention proposes a power monitoring system of a microgrid group, the monitoring object of which is a microgrid group, and the power monitoring system can monitor multiple microgrids in the microgrid group through a monitoring master station and multiple on-site monitoring sub-stations Perform power monitoring, and at the same time, the monitoring master station can interact with external systems, receive active power control strategies and voltage/reactive power control strategies, and send the control strategies to the corresponding on-site monitoring sub-stations of specific microgrids. The on-site monitoring substation controls the corresponding equipment in the microgrid to meet the basic functions of energy management, coordinated control, protection and communication of the microgrid and the microgrid group.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural diagram of a power monitoring system for a microgrid group provided by the present invention;

Fig. 2 is a kind of instruction and signal flow chart for the power monitoring system of microgrid group provided by the present invention;

Wherein, reference sign is:

1. Monitoring master station; 2. On-site monitoring sub-station; 3. External system; 11. First data acquisition and processing module; 12. Information interaction module; 13. First active power control module; 14. First voltage/ Reactive power adjustment module; 15. First storage module; 16. First operation mode control module; 17. Communication network monitoring module; 18. System and network management module; 21. Second data acquisition and processing module; 22. Second 2. Active power control module; 23. Second voltage/reactive power adjustment module; 24. Equipment control module; 25. Second storage module; 26. Second operating mode control module; 29. Power quality detection and analysis module.

Detailed ways

The embodiment of the present invention provides a power monitoring system for a microgrid group, which meets the requirements for basic functions such as energy management, coordinated control, protection and communication of the microgrid and the microgrid group.

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1 and Figure 2, an embodiment of the present invention provides a power monitoring system for a microgrid group, including:

Monitoring master station 1, on-site monitoring sub-station 2 and communication system;

The monitoring master station 1 and the local monitoring sub-station 2 are connected through a communication system;

Monitoring master station 1 includes:

The first data collection and processing module 11 is used to collect analog signal data and state quantity signal data of the grid-connected point of the microgrid, and analyze and process the analog signal data and state quantity signal data;

An information interaction module 12, configured to perform information interaction with the external system 3, and receive active power regulation strategies and voltage/reactive power regulation strategies;

The first active power control module 13 is configured to issue an active power control command according to the active power control strategy received by the information interaction module 12;

The first voltage/reactive power adjustment module 14 is configured to issue a voltage/reactive power adjustment instruction according to the voltage/reactive power adjustment strategy received by the information interaction module 12;

On-site monitoring substation 2 includes:

The second data acquisition and processing module 21 is used to collect the operating data and operating state data of the microgrid, and analyze and process the operating data and operating state data;

The second active power control module 22 is used to generate control instructions for power generation equipment or energy storage equipment in the microgrid according to the active power control instructions issued by the monitoring master station 1;

The second voltage/reactive power adjustment module 23 is used to generate distributed power sources, reactive power compensation devices, and energy storage devices that control reactive power in the microgrid according to the voltage/reactive power adjustment instructions issued by the monitoring master station 1. Control instructions for equipment or on-load tap changer transformers;

The equipment control module 24 is connected with the second active power control module 22 and the second voltage/reactive power adjustment module 23 respectively, and is used to control the power generation equipment in the microgrid and the reactive power controllable equipment in the microgrid. The control command operates the corresponding power generation equipment, energy storage equipment, distributed power supply with controllable reactive power, reactive power compensation device, energy storage equipment or on-load tap changer;

It should be noted that the monitoring master station 1 can be an independent master station, or can be embedded in the distribution automation master station as a functional module; the on-site monitoring sub-station 2 can be an independent system, and the on-site monitoring sub-station 2 can be integrated to the microgrid central controller and energy management system;

The first data acquisition and processing module 11 provides data support and control basis for other modules in the monitoring master station 1. Similarly, the second data acquisition and processing module 21 provides data support and control for other modules in the local monitoring sub-station 2 in accordance with;

The analog signal data collected by the first data acquisition and processing module 11 includes, but is not limited to, the active power of the grid-connected point of the micro-grid, the reactive power of the grid-connected point of the micro-grid, and the power quality of the grid-connected point of the micro-grid, etc.; Power grid accident trip signal, protection action signal and abnormal signal, etc. The first data collection and processing module 11 carries out the rationality check to the analog quantity signal data and the state quantity signal data of collection, the analysis and processing of over-limit alarm;

The operating data of the microgrid collected by the second data acquisition and processing module 21 includes, but is not limited to, distributed power source measurement data, energy storage measurement data, load measurement data, reactive power compensation equipment measurement data, auxiliary equipment measurement data, Electric energy measurement data, meteorological and other data, statistical calculation data, etc.; operating status data include but not limited to primary and secondary equipment operating status data, auxiliary equipment operating status data, microgrid forecast data and microgrid planning data, etc. The second data acquisition and processing module 21 performs rationality checks and analysis and processing of over-limit alarms according to the collected operating data and operating status data of the microgrid;

The range of equipment objects controlled by the equipment control module 24 includes but not limited to circuit breakers, disconnectors, grounding switches, converters, taps of main transformers, internal distributed power sources and energy storage systems in microgrids, reactive power compensation equipment and other important equipment.

The embodiment of the present invention proposes a power monitoring system for a microgrid group. The monitoring object is the microgrid group. This power monitoring system can monitor multiple The microgrid performs power monitoring, and at the same time, the monitoring master station can exchange information with external systems, receive active power regulation strategies and voltage/reactive power regulation strategies, and send the regulation strategies to the corresponding on-site monitoring substations of specific microgrids , the corresponding equipment in the microgrid is controlled by the on-site monitoring sub-station, which meets the requirements for basic functions such as energy management, coordinated control, protection and communication of the microgrid and microgrid group.

Further, the monitoring master station 1 also includes:

The first storage module 15 is connected with the first data collection and processing module 11, and is used for storing the collected analog signal data and state quantity signal data of the grid-connected points of the microgrid.

Further, the local monitoring substation 2 also includes:

The second storage module 25 is connected with the second data collection and processing module 21 and is used for storing the collected operation data and operation state data of the microgrid.

Further, the monitoring master station 1 also includes:

The first operation mode control module 16 is configured to issue a first mode switching instruction to the microgrid, and perform switching control of the on-grid/off-grid operation mode of the microgrid;

The local monitoring substation 2 also includes:

The second operating mode control module 26 is connected with the device control module 24, and is used to generate distributed power sources and energy storage devices that control the corresponding reactive power in the microgrid according to the first mode switching instruction issued by the monitoring master station 1 or the second mode switching command of the grid-connected interface device;

The equipment control module 24 is configured to operate the corresponding reactive power controllable distributed power supply, energy storage equipment or grid-connected interface device according to the second mode switching finger;

Further, the monitoring master station 1 also includes:

The communication network monitoring module 17 is used to monitor the operating condition of the communication channel.

Further, the monitoring master station 1 also includes:

The system and network management module 18 is used to display the operating status, CPU load rate and hard disk remaining space information of each server, workstation, application software and network of the monitoring master station 1, and has the functions of authority management and abnormal information alarm.

Further, the local monitoring substation 2 also includes:

The anti-mislocking module 27 is configured to provide an anti-mislocking function.

Further, the local monitoring substation 2 also includes:

The start-stop control module 28 is connected with the equipment control module 24, and is used to send the start-stop control commands to the equipment in the microgrid to the equipment control module 24 according to the preset order and process, so as to realize the start-up and grid-connection of the microgrid Shutdown, off-grid start and off-grid shutdown functions.

Further, the local monitoring substation 2 also includes:

The power quality detection and analysis module 29 is used to monitor and record the power quality information of the grid-connected points of the micro-grid, and report the power quality information of the grid-connected points of the micro-grid to the monitoring master station 1;

It should be noted that the power quality information includes, but is not limited to, harmonics at grid-connected points, voltage unbalance, voltage deviation, voltage fluctuations and flicker, DC components, and the like.

Further, the on-site monitoring sub-station 2 of the microgrid that is connected to the lower than the preset voltage level is connected to the monitoring master station 1 through wireless communication, and the monitoring master station 1 also includes a secure access for wireless communication connection area, a safety isolation device is also set between the safety access area and other modules of the monitoring master station 1;

The on-site monitoring sub-station 2 of the micro-grid connected to the preset voltage level is connected to the monitoring master station 1 through optical fiber communication;

It should be noted that, taking the preset voltage level of 10kV as an example, for a microgrid group with two voltage levels of 10kV and 380V connected to the microgrid, the power monitoring system for the microgrid group described in this application is used.

For a microgrid connected to a 10kV voltage level, the on-site monitoring substation 2 can perform data interaction with the on-site equipment, issue control instructions from the microgrid monitoring master station 1 to the on-site equipment for execution, and the on-site monitoring substation 2 and the on-site equipment The monitoring master stations 1 adopt optical fiber communication, and meet the real-time requirements of telemetry, remote signaling, remote control, and remote adjustment signals, and adopt communication protocols based on DL/T634.5101 and DL/T 634.5104.

For the microgrid connected to the 380V voltage level, the local monitoring substation 2 only has the function of monitoring and recording the operation status, and does not participate in the adjustment of active power and voltage/reactive power. The communication between the on-site monitoring sub-station 2 and the monitoring main station 1 adopts the wireless communication method, accesses the specially established safe access area, and sets the It is a horizontal one-way safety isolation device for electric power that is tested and certified by the designated department of the state.

For grid-connected microgrids connected to the 10kV voltage level that participate in power adjustment, the control mode of "according to the dispatching plan curve control" is selected for active power control, and the control mode of "receive reactive power control issued by the upper management system" is selected for reactive power/voltage control. setpoint” control mode.

During grid-connected operation, the power monitoring method for the microgrid group includes the following steps:

Step 1: Dispatch automation system and power consumption information collection system issue active power control strategy and voltage/reactive power control strategy P _order and Q _order to the monitoring master station;

Step 2: Based on the active power control strategy and voltage/reactive power adjustment strategy, the monitoring master station 1 chooses to issue the corresponding active power control to the controllable n grid-connected microgrids with 10kV voltage level access through economical calculation Command △P ₁ ... △P _n , and issue corresponding voltage/reactive power adjustment commands △Q ₁ ... △Q _m to the controllable m grid-connected microgrids with 10kV voltage levels. When the command is positive, it means increase, and when it is negative, it means decrease. Let the active power and reactive power of the microgrid group before adjustment be denoted as P _cur and Q _cur respectively, satisfying:

Step 3: The microgrid local monitoring sub-station 2 executes the active power control command and voltage/reactive power adjustment command issued by the monitoring master station 1 through the second active power control module 22 and the second voltage/reactive power adjustment module 23 ;

Step 4: The on-site monitoring sub-station 2 of the microgrid controls the output of various power generation equipment in the micro-grid and the short-term charge and discharge of the energy storage system through the equipment control module 24 to perform active power control; the on-site monitoring sub-station 2 controls the Distributed power supplies with controllable reactive power, energy storage inverters, reactive power compensation devices, on-load voltage regulating transformers and other equipment perform unified reactive power and voltage control and management.

Let the active power adjustment command received by the kth microgrid be △P _k , the reactive power adjustment command be △Q _k , and the output of various power generation equipment and the active power generated by the short-term charge and discharge of the energy storage system be expressed as P _{gen_1} ...P _{gen_n} , P _{sto_1} ...P _{sto_m} , satisfy:

The reactive power generated by various reactive power controllable distributed power sources, energy storage inverters, reactive power compensation devices, and on-load tap-changing transformers are expressed as, Q _{gen_1} ...Q _{gen_n} , Q _{inv_1} ...Q _{inv_m} , Q _{com_1} ... Q _{com_o} , Q _{tra_1} ... Q _{tra_p} , satisfy:

The on-site monitoring sub-station 2 ensures through the second active power control module 22 that the maximum exchanged active power and the maximum active power change rate of the tie line comply with the operation plan approved by the grid dispatching organization; the on-site monitoring sub-station 2 uses the second voltage/reactive power The adjustment module 23 ensures that the grid-connected point voltage and the voltage change rate comply with the operation plan approved by the grid dispatching agency.

When the local monitoring substation 2 needs to adjust active power and reactive power at the same time, the active power adjustment is given priority; the reactive power adjustment is preferentially adjusted by the reactive power adjustment function of the reactive power compensation device.

During off-grid operation, when the monitoring master station 1 issues instructions for off-grid operation to the microgrid, the on-site monitoring substation 2 of the microgrid must be able to complete the smooth switching of the microgrid from grid-connected to off-grid.

In the off-grid operation state, it mainly relies on the local monitoring sub-station 2 of each micro-grid, and the micro-grid mainly ensures the internal frequency and voltage stability of the system. On-site monitoring sub-station 2 monitors the active output value of the main power supply, and when it exceeds the fixed value, adjusts the active power of other power supply equipment in the micro-grid to ensure that the micro-grid system frequency runs within the normal range; on-site monitoring sub-station 2 monitors When the reactive power output value of the main power supply exceeds the fixed value, adjust the reactive power of other power supply equipment in the microgrid to ensure that the bus voltage of the microgrid and each power supply equipment operate within the normal range. The deviations between the active and reactive output values of the main power supply and the set value are △P _main and △Q _main , and the adjustment values of active and reactive power output of other power supplies are △P _rest and △Q _rest , satisfying:

ΔP _main = ΔP _rest

ΔQ _main = ΔQ _rest ;

After the external failure of the microgrid is restored, when the microgrid is switched from off-grid operation to grid-connected operation, the on-site monitoring substation 2 of the microgrid connected to the grid through a 380V voltage level selects the automatic execution mode, and is connected to the grid through a voltage level of 10kV and above The on-site monitoring sub-station 2 of the microgrid is connected to the grid according to the grid dispatching instructions.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. a kind of power monitoring system for micro-capacitance sensor group, which is characterized in that including：

Master station monitors substation and communication system on the spot；

It is connected by the communication system between the master station and the substation of monitoring on the spot；

The master station includes：

First data acquisition and processing (DAP) module, the analog signals data for acquiring micro-grid connection point and state quantity signal number According to, and analog signals data and state quantity signal data are analyzed and handled；

Information exchange module receives active power regulating strategy and Voltage-Reactive Power work(for carrying out information exchange with external system Rate regulating strategy；

First active power controller module, the active power regulating strategy for being received according to described information interactive module, under Send out active power controller instruction；

First voltage/reactive power adjustment module, the Voltage-Reactive Power power tune for being received according to described information interactive module Control strategy, issues Voltage-Reactive Power power adjustment instruction；

The substation of monitoring on the spot includes：

Second data acquisition and processing (DAP) module, operation data and running state data for acquiring micro-capacitance sensor, and to running number According to being analyzed and handled with running state data；

Second active power controller module, the active power controller instruction for being issued according to the master station are generated to micro- electricity Generating equipment or the control instruction of energy storage device in net；

Second voltage/reactive power adjustment module, the Voltage-Reactive Power power adjustment instruction for being issued according to the master station Generate distributed generation resource, reactive power compensator, energy storage device or the on-load regulator transformer controllable to reactive power in micro-capacitance sensor Control instruction；

Device control module adjusts mould with the second active power controller module and the second voltage/reactive power respectively Block connects, for according to the control to reactive power controllable device in the control instruction and micro-capacitance sensor of generating equipment in micro-capacitance sensor The instruction distributed generation resource controllable to corresponding generating equipment, energy storage device, reactive power, reactive power compensator, energy storage device Or on-load regulator transformer is operated.

2. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that the master station is also Including：

First memory module is connect with the first data acquisition and processing (DAP) module, for storing collected micro-grid connection The analog signals data and state quantity signal data of point.

3. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that monitoring on the spot Station further includes：

Second memory module is connect, the fortune for storing collected micro-capacitance sensor with the second data acquisition and processing (DAP) module Row data and running state data.

4. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that the master station is also Including：

First operational mode control module, for issuing first mode switching command to micro-capacitance sensor, carry out micro-capacitance sensor and/off-network The switching control of operational mode；

The substation of monitoring on the spot further includes：

Second operational mode control module, connect with the device control module, and for being issued according to the master station The instruction of one pattern switching is generated to the controllable distributed generation resource of corresponding reactive power in micro-capacitance sensor, energy storage device or simultaneously network interface The second mode switching command of device；

The device control module, for according to second mode switching refer to the distributed generation resource controllable to corresponding reactive power, Energy storage device or grid connection interface device are operated.

5. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that the master station is also Including：

Communication network monitoring module is used for the operating condition of monitors communication channels.

6. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that the master station is also Including：

System and network management module, for showing each server of the master station, work station, application software and network Operating status, cpu load rate and hard disk remaining space information, are provided simultaneously with rights management and exception information warning function.

7. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that monitoring on the spot Station further includes：

Anti-misoperation locking module, for providing anti mis-closedown function.

8. the power monitoring system according to claim 4 for micro-capacitance sensor group, which is characterized in that monitoring on the spot Station further includes：

Start-up and shut-down control module is connect with the device control module, for being sent to micro- according to preset sequence and flow The start-up and shut-down control of equipment is instructed to the device control module in power grid, realizes the grid-connected startup, grid-connected shutdown, off-network of micro-capacitance sensor Start and off-network stopping function.

9. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that monitoring on the spot Station further includes：

Power Quality Detection and analysis module, the power quality information of the grid entry point for monitoring and recording micro-capacitance sensor, and will be micro- The power quality information reporting of the grid entry point of power grid is to the master station.

10. the power monitoring system according to claim 1 for micro-capacitance sensor group, which is characterized in that being less than preset electricity Described monitor on the spot of the micro-capacitance sensor of pressure grade access connects by radio communication between substation and the master station, and described Master station further includes the secure accessing area for wirelessly communicating connection, in its of the secure accessing area and the master station It is additionally provided with safety insulating device between his module；

Pass through between substation and the master station to being monitored on the spot described in the micro-capacitance sensor that is accessed not less than preset voltage grade Fiber optic communication connects.