WO2018133230A1 - Control method and apparatus for micro-grid system - Google Patents

Abstract

A control method and apparatus for a micro-grid system. The micro-grid system comprises: a micro-source device (120), an energy storage device (140), an electric load (160) and a micro-grid control device (180). The method comprises: detecting operation parameters of a micro-grid system by means of a micro-grid control device (S102), wherein the operation parameters at least comprise: a real-time generated power PW0 of a micro-source device, a real-time electric power PZ of an enabled load in an electric load, and the maximum charge and discharge rated power PE of an energy storage device; and performing power balance and/or energy balance control on the micro-grid system according to the detected operation parameters (S104). The control method and apparatus solve the technical problem that it is difficult to perform precise control on load energy prediction and the overall requirements by means of an existing method for controlling an instantaneous voltage balance of a micro-grid power supply system.

Description

Microgrid system control method and device Technical field

The present invention relates to the field of automation control, and in particular to a method and apparatus for controlling a microgrid system.

Background technique

The existing microgrid power supply system generally controls the instantaneous energy and power balance of the microgrid power supply system by the fluctuation range of the bus voltage, but since the energy is limited in the off-grid system and the load is not controlled, It is easy to cause a system crash due to improper use of energy. It can be seen that the existing method of controlling the instantaneous voltage of the microgrid power supply system is difficult to finely control the load energy prediction and the overall demand.

For the problem, no effective solution has been proposed yet.

Summary of the invention

Embodiments of the present invention provide a method and apparatus for controlling a microgrid system to at least solve the technical problem that the existing method for controlling the instantaneous voltage balance of the microgrid power supply system is difficult to finely control the load energy prediction and the overall demand.

According to an aspect of the embodiments of the present invention, a method for controlling a microgrid system is provided. The microgrid system includes: a micro-source device, an energy storage device, an electrical load, and a micro-network control device, wherein the method includes: The micro-network control device detects the operating parameters of the micro-grid system, wherein the operating parameters include at least: real-time power generation PW0 of the micro-source device, real-time power PZ of the load that has been turned on, and energy storage device The maximum charging and discharging rated power PE; performing power balance and/or energy balance control on the above micro grid system according to the detected operating parameters.

Further, performing power balance control on the microgrid system according to the detected operating parameter includes: determining, according to the detected operating parameter, whether the real-time generating power PW0 of the micro-source device is smaller than the opened load in the used power load The real-time power consumption PZ; if less, controlling the energy storage device to discharge at a predetermined discharge power PF, wherein PF=PZ-PW0; if greater than, controlling the energy storage device to charge at a predetermined charging power PC, wherein PC=PW0-PZ.

Further, controlling the energy storage device to discharge at a predetermined discharge power PF includes: determining whether the predetermined discharge power PF is greater than a maximum charge and discharge rated power PE of the energy storage device; if greater than, stopping The low priority load supply in the load is turned on.

Further, controlling the charging device to charge at a predetermined charging power PC includes: determining whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device; if greater than, transmitting the first to the micro-source device A power limit command to limit the micro-source device to generate power at a first predetermined real-time limited power PW1, wherein PW1=PW0-PZ-PE.

Further, after determining whether the predetermined charging power PC is greater than the maximum charging and discharging rated power PE of the energy storage device, the method further includes: if it is determined that the predetermined charging power PC is smaller than a maximum charging and discharging rated power PE of the energy storage device And determining whether the battery capacity SOC of the energy storage device is greater than a preset value; if the SOC is greater than the preset value, sending a second power limit instruction to the micro source device to limit the micro-source device to a second predetermined real-time The power PW2 is limited to generate power, where PW2 = PW0 - PZ.

Further, performing energy balance control on the microgrid system according to the detected operating parameter includes: predicting a priority of the opened load according to the detected real-time power PZ of the loaded load in the electrical load The amount of power that needs to be consumed in the first preset time period and the remaining power generation amount of the micro-source device in the first preset time period to obtain a corresponding prediction result; and the current remaining power of the energy storage device and the specified priority The power consumed by the load in the second preset time period obtains a corresponding acquisition result; according to the foregoing prediction result and the foregoing acquisition result, each priority load in the opened load is controlled to balance the micro grid system energy of.

Further, after performing power balance control on the microgrid system according to the detected operating parameter, the method further includes: when PF>0, and PW0+PF≠PZ, or when PC>0, and PW0≠ Abnormal alarm processing is performed on the PZ+PC.

According to another aspect of the embodiments of the present invention, there is also provided a control device for a microgrid system, the microgrid system comprising: a micro source device, an energy storage device, an electrical load, and a piconet control device, wherein the device comprises The detecting unit is configured to detect an operating parameter of the microgrid system by using a microgrid control device, where the operating parameter includes at least: a real-time generating power PW0 of the micro-source device, and a real-time power consumption of the loaded load in the electrical load. PZ, the maximum charge and discharge rated power PE of the above energy storage device; and a control unit for performing power balance and/or energy balance control on the micro grid system according to the detected operating parameters.

Further, the control unit includes: a determining module, configured to determine, according to the detected operating parameter, whether the real-time power generation PW0 of the micro-source device is smaller than a real-time power PZ of the opened load of the power-on load; a module, configured to control the energy storage device to discharge at a predetermined discharge power PF, in a case where it is determined that the real-time power generation PW0 of the micro-source device is smaller than the real-time power PZ of the load that has been turned on in the power-on load, wherein the PF is discharged =PZ-PW0; a second control module for determining the real-time of the micro-source device When the generated power PW0 is greater than the real-time power PZ of the load that has been turned on in the above-described power load, the energy storage device is controlled to be charged at a predetermined charging power PC, where PC = PW0 - PZ.

Further, the first control module includes: a first determining submodule, configured to determine whether the predetermined discharge power PF is greater than a maximum charge and discharge rated power PE of the energy storage device; and an electronic supply module configured to determine the predetermined discharge When the power PF is greater than the maximum charge and discharge rated power PE of the energy storage device, power supply to the low priority load in the above-mentioned opened load is stopped.

Further, the second control module includes: a second determining submodule, configured to determine whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device; and the first sending submodule is configured to determine the When the predetermined charging power PC is greater than the maximum charging and discharging rated power PE of the energy storage device, the first power limiting instruction is sent to the micro source device to limit the micro-source device to generate power by using the first predetermined real-time limiting power PW1, wherein , PW1 = PW0-PZ-PE.

Further, the device further includes: a third determining submodule, configured to determine whether the predetermined charging power PC is greater than the maximum charging and discharging rated power PE of the energy storage device, and if it is determined that the predetermined charging power PC is smaller than the foregoing In the case of the maximum charge and discharge rated power PE of the energy storage device, it is determined whether the battery capacity SOC of the energy storage device is greater than a preset value; and the second sending submodule is configured to: when the SOC is greater than the preset value, The micro-source device sends a second power limit command to limit the micro-source device to generate power with the second predetermined real-time limit power PW2, where PW2=PW0-PZ.

Further, the control unit includes: a prediction module, configured to predict, according to the detected real-time power PZ of the load that is turned on, the load of the specified priority in the opened load is within a first preset time period The amount of power to be consumed and the remaining power generation amount of the micro-source device in the first preset time period are obtained, and the corresponding prediction result is obtained; the acquiring module is configured to acquire the current remaining power of the energy storage device and the load of the specified priority. The power consumption in the second preset time period is obtained, and the third control module is configured to control each priority load in the opened load according to the foregoing prediction result and the foregoing obtaining result to balance the foregoing The energy of the microgrid system.

Further, the apparatus further includes: an executing unit, configured to perform power balance control on the microgrid system according to the detected operating parameter, when PF>0, and PW0+PF≠PZ, or when PC> 0, and PW0≠PZ+PC, the abnormal alarm processing is executed.

According to another aspect of an embodiment of the present invention, there is also provided a storage medium comprising a stored program, wherein the program executes a control method of the microgrid system.

According to another aspect of an embodiment of the present invention, there is also provided a processor for running a program, wherein a program of controlling a microgrid system is executed while the program is running.

According to another aspect of the embodiments of the present invention, a terminal is provided, including: a detecting unit, configured to detect an operating parameter of a microgrid system by using a microgrid control device, where the operating parameter includes at least: real-time power generation of the micro-source device Power PW0, real-time power PZ of the load that has been turned on in the electrical load, maximum charge and discharge rated power PE of the energy storage device; control unit for power balancing and/or energy of the microgrid system based on the detected operating parameters Balance control; a processor, a processor running program, wherein the program runs a control method of the micro grid system for data output from the detecting unit and the control unit.

According to another aspect of the embodiments of the present invention, a terminal is provided, including: a detecting unit, configured to detect an operating parameter of a microgrid system by using a microgrid control device, where the operating parameter includes at least: real-time power generation of the micro-source device Power PW0, real-time power PZ of the load that has been turned on in the electrical load, maximum charge and discharge rated power PE of the energy storage device; control unit for power balancing and/or energy of the microgrid system based on the detected operating parameters Balance control; a storage medium for storing a program, wherein the program performs a control method of the micro grid system for data output from the detecting unit and the control unit at runtime.

In the embodiment of the present invention, a control method of a micro grid system is adopted, wherein the micro grid system includes: a micro source device, an energy storage device, a power load, and a micro network control device, wherein the method includes: controlling through a micro network The device detects operating parameters of the microgrid system, wherein the operating parameters include at least: real-time power generation PW0 of the micro-source device, real-time power PZ of the load that has been turned on in the power load, real-time charging power PC of the energy storage device, and real-time discharge power PF; according to the detected operating parameters, power balance and/or energy balance control of the microgrid system; through the energy prediction and hierarchical management control of the equipment load, the microgrid off-grid operation is stable and reliable. Through the refined control of energy prediction and overall demand, the existing technical problems of controlling the instantaneous voltage balance of the microgrid power supply system are difficult to control the load energy prediction and the overall demand.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a block diagram of an alternative microgrid system in accordance with an embodiment of the present invention;

2 is a flow chart of a method of controlling a microgrid system according to an embodiment of the present invention;

3 is a flow chart of an optional control of power balance of a microgrid system in accordance with an embodiment of the present invention;

4 is a flow chart of an optional control of energy balance of a microgrid system in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of a control device of a microgrid system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It is to be understood that the data so used may be interchanged where appropriate, so that the embodiments of the invention described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

Example 1

According to an embodiment of the present invention, there is provided an embodiment of a method of controlling a microgrid system, and it is noted that the steps illustrated in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and Although the logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

1 is a structural diagram of an optional microgrid system according to an embodiment of the present invention. As shown in FIG. 1, the microgrid system includes: a micro-source device 120, an energy storage device 140, an electrical load 160, and a piconet control. Apparatus 180, FIG. 2 is a flowchart of a method for controlling a microgrid system according to an embodiment of the present invention. As shown in FIG. 2, the control method of the microgrid system includes the following steps:

Step S102: The operating parameters of the microgrid system are detected by the microgrid control device, where the operating parameters include at least: a real-time power generation power PW0 of the micro-source device, a real-time power consumption PZ of the load that has been turned on in the power load, and a maximum energy storage device. Charging and discharging rated power PE;

Step S104, performing power balance and/or energy balance control on the micro grid system according to the detected operating parameters.

That is, in order to achieve fine control of the microgrid system, it is necessary to acquire operating parameters of the microgrid system. Since the microgrid system includes microsource devices, energy storage devices, electrical loads, and microgrid control devices, the microgrid system The operating parameter may be the real-time power generation PW0 of the micro-source device, or the real-time power PZ of the power load that has been turned on in the power load, the maximum charge and discharge rated power of the energy storage device PE, and the energy storage device. Real-time charging power PC, real-time discharge power PF of energy storage equipment. Obtaining the operating parameters of the microgrid system may be obtained by detecting and collecting by the microgrid control device, that is, the state parameters of the microgrid system collected by the microgrid control device, which may include: (1) the sum of the real-time power calculations of all the opened loads: PZ=P1+P2+...Pn; (2), energy consumption statistics and record analysis of all open loads; (3) real-time power generation power PW0 of micro-source equipment. In addition, the communication between the micro-network control device and the micro-source device, the energy storage device, and the electrical load device may adopt various communication modes such as wired, wireless, and power line carrier.

It should be noted that the micro-source devices in the micro-grid system may be photovoltaic power generation, wind power generation, backup generators, etc. These devices can be used as micro-source devices to supply power to the DC bus, but the energy characteristics of the micro-source devices are not necessarily Continuous supply of electrical energy, whose instantaneous power is simultaneously limited by the maximum rating of the conversion device. The energy storage device may include an energy storage battery, an energy storage DC/DC conversion device, a battery management unit, and the like, and the maximum charge and discharge rated power PE is limited by the conversion device. The electrical load device can be configured with an energy monitoring module to collect energy consumption and usage information. The microgrid control device may have a microgrid operating parameter state acquisition module, a microgrid system power control module, a microgrid system energy control module, and a microgrid system fault diagnosis module, which may be used to record the priority level of each load device in the initialization phase, Operating parameters such as rated power, minimum open running time slice, and power consumption forecast for minimum open running time slice.

In the above manner, a microgrid system control method is adopted. The microgrid system includes: a micro-source device, an energy storage device, a power load, and a micro-grid control device, wherein the method includes: detecting the micro-grid system through the micro-network control device The operating parameters, wherein the operating parameters include at least: real-time power generation PW0 of the micro-source device, real-time power PZ of the load that has been turned on in the power load, maximum charge and discharge rated power of the energy storage device PE, real-time charging of the energy storage device Real-time discharge power PF of power PC and energy storage equipment. According to the detected operating parameters, the power balance and/or energy balance control of the microgrid system is achieved, and when the microgrid system is off-grid, the energy prediction and hierarchical management control of the equipment load are realized, and the microgrid is operated off-grid. The purpose of stability and reliability, thus achieving the technical effect of finely controlling the load energy prediction and the overall demand, and solving the existing method of controlling the instantaneous voltage balance of the microgrid power supply system is difficult to refine the load energy prediction and the overall demand. Technical issues of control.

Optionally, performing power balance control on the microgrid system according to the detected operating parameter includes: determining, according to the detected operating parameter, whether the real-time generating power PW0 of the micro-source device is less than the real-time power consumption of the opened load in the powered load PZ; if less, the energy storage device is controlled to discharge at a predetermined discharge power PF, wherein PF = PZ - PW0; if greater, the control energy storage device is charged at a predetermined charging power PC, wherein PC = PW0 - PZ.

The state parameter of the microgrid system collected by the microgrid control device may further include a predetermined charging power PC of the energy storage battery of the energy storage device, a predetermined discharge power PF of the energy storage battery of the energy storage device, and a storage battery capacity SOC. That is, the method for performing power balance control on the microgrid system may be to determine the micro source based on the detected operating parameters. Whether the real-time power generation power PW0 of the equipment is less than the real-time power consumption PZ of the load that has been turned on in the power load, and the energy storage power is controlled when the real-time power generation power PW0 of the micro-source equipment is smaller than the real-time power consumption PZ of the load that has been turned on in the power load. The device discharges at a predetermined discharge power PF, and the energy storage battery of the energy storage device may discharge at a predetermined discharge power PF, wherein the predetermined discharge power PF may be equal to the real-time power PZ of the opened load in the electrical load minus the micro-source device Real-time power generation power PW0; in the case where the real-time power generation power PW0 of the micro-source device is greater than the real-time power consumption PZ of the load that has been turned on in the power load, the control energy storage device is charged at a predetermined charging power PC, which may be an energy storage device The energy storage battery is charged at a predetermined charging power PC, and the energy storage device can be equal to the real-time power generation power PW0 of the micro-source device minus the real-time power consumption PZ of the activated load in the power load at a predetermined charging power PC. Specifically, for example, as shown in FIG. 3, FIG. 3 is a flow chart of an optional control of power balance of a microgrid system in accordance with an embodiment of the present invention.

Optionally, controlling the energy storage device to discharge at the predetermined discharge power PF includes: determining whether the predetermined discharge power PF is greater than a maximum charge and discharge rated power PE of the energy storage device; if greater than, stopping to be a low priority among the opened load Load power supply.

That is, in the case where the real-time power generation PW0 of the micro-source device is smaller than the real-time power consumption PZ of the load that has been turned on in the power load, and the control energy storage device discharges at the predetermined discharge power PF, the predetermined discharge power PF is continuously determined. Whether it is greater than the maximum charge and discharge rated power PE of the energy storage device, when the predetermined discharge power PF is greater than the maximum charge and discharge rated power PE of the energy storage device, the power supply to the low priority load in the opened load is stopped.

Optionally, the controlling the energy storage device to perform charging at the predetermined charging power PC comprises: determining whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device; if greater than, transmitting the first power limiting instruction to the micro source device , to limit the micro-source device to generate power with the first predetermined real-time limiting power PW1, where PW1=PW0-PZ-PE.

That is, in the case that the real-time power generation PW0 of the micro-source device is greater than the real-time power consumption PZ of the load that has been turned on in the power load, the energy storage device is controlled to be charged at a predetermined charging power PC, which may be an energy storage battery of the energy storage device. Charging is performed at a predetermined charging power PC. When the charging device is controlled to charge with the predetermined charging power PC, it is determined whether the predetermined charging power PC is greater than the maximum charging and discharging rated power PE of the energy storage device, and the predetermined charging power PC is greater than the maximum charging and discharging rated power PE of the energy storage device. And transmitting, by the micro-source device, a first power limit instruction to limit the micro-source device to generate power by using the first predetermined real-time power generation power PW1, where the first predetermined real-time power limit power PW1 is equal to the real-time power generation power PW0 of the micro-source device minus the power load The real-time power PZ of the load and the maximum charge and discharge rated power PE of the energy storage device are turned on.

Optionally, after determining whether the predetermined charging power PC is greater than the maximum charging and discharging rated power PE of the energy storage device, the method further includes: determining, if the predetermined charging power PC is smaller than the maximum charging and discharging rated power PE of the energy storage device, determining Whether the battery capacity SOC of the energy storage device is greater than a preset value; if the SOC is greater than a preset value, the micro-source is The device transmits a second power limit command to limit the micro source device to generate power at the second predetermined real time limit power PW2, where PW2 = PW0 - PZ.

That is, when the required PC is smaller than the PE, and when the battery capacity (SOC) of the energy storage device is detected to be greater than a preset value, for example, when more than 90% of the battery stops charging, the second power limit instruction is sent to the micro source device, such as The piconet control device sends a limited power PW-PZ command to the micro-source DC/DC.

Optionally, performing energy balance control on the microgrid system according to the detected operating parameter includes: predicting a specified priority load in the opened load according to the detected real-time power PZ of the loaded load in the electrical load The amount of power that needs to be consumed in a predetermined period of time and the remaining power generation amount of the micro-source device in the first preset time period, and the corresponding prediction result is obtained; and the current remaining capacity of the energy-storing device and the load of the specified priority are obtained in the second pre-load Set the power consumption in the time period to obtain the corresponding acquisition result; according to the prediction result and the acquisition result, control each priority load in the opened load to balance the energy of the micro grid system.

That is, by detecting the real-time power consumption PZ of the load that has been turned on in the used power load, predicting the amount of power that needs to be consumed in the first preset time period of the load in the opened load and the micro-source device in the first Set the amount of power generation remaining in the time period. The specified priorities in the opened load can be divided into different levels. For example, all the loads of the system are divided into four levels according to the priority, from high to low: 4-system level (including control system, detection and collection function operation), 3-contingency Level (lighting, ventilation, drinking water), 2-custom level (daily cooking, etc.), 1-comfort level (air conditioning, hot water), among which high priority level 4, level 3, level 2, level 1 daily The power consumption is used for prediction. Of course, it is also possible to predict the power consumption for the lowest priority level 1 according to the current actual energy status and the power consumption prediction within the first preset time period (such as the minimum open running time slice). Energy balance control of the microgrid system can be achieved. Specifically, as shown in FIG. 4, FIG. 4 is an optional flow chart for controlling energy balance of a microgrid system according to an embodiment of the present invention. The power consumption prediction of the electrical load in the system may be 0 hours at 0 o'clock. -23 points are the period, and the load forecasting power of priority 4-2 is summarized as: QXY4, QXY3, QXY2; the power consumption of the priority 4-2 is summarized as: QYXHY4, QYXHY3, QYXHY2; Remaining power generation: QW (calculated based on current micro-source power generation X remaining power generation estimated time); battery current remaining capacity: Q; unit: watt. minute. Emergency Reserve: The system needs to be tested and maintained at any time: Q>QXY4+QXY3 as the system level and emergency level for 24 hours, otherwise the level 2 and level 1 load is off. Priority control: a. Assume that the priority of the current request to enable the load is 1, and the minimum on-time running time of the device to be turned on is QFX, which needs to be satisfied: Q>QXY4+QXY3, and Q+QW-QXY4-QXY3-( QXY2-QYXHY2)>QFX; otherwise it is not allowed to be turned on; b. Assume that the priority of the current request is 2, and the minimum power-on time of the device to be turned on is QFX, which needs to be satisfied: Q>QXY4+QXY3, and Q+ QW-QXY4-QXY3>QFX; otherwise, the device with priority 1 is turned off; c. Assume that the priority of the current request is 3, and the minimum power-on time for the device to be turned on is QFX, which needs to be satisfied: Q> QXY4, Q+QW-QXY4>QFX, otherwise, the device with priority 2 is turned off and judged. Insufficient power is detected during operation, that is, the low priority device is turned off.

Optionally, after performing power balance control on the microgrid system according to the detected operating parameter, the method further includes: when PF>0, and PW+PF≠PZ, or when PC>0, and PW≠PZ When the PC is used, the abnormal alarm processing is executed.

In order to realize timely monitoring of the power imbalance of the microgrid system and control the power balance of the microgrid system, the real-time power imbalance of the microgrid system can be monitored and diagnosed and judged: when PF>0, PW+PF≠PZ, or when PC >0, and PW≠PZ+PC, an abnormal alarm message is issued.

Through the above manner, when the microgrid system is off-grid, the energy prediction and hierarchical management control of the equipment load are realized, and the microgrid off-grid operation is stable and reliable.

Example 2

According to another aspect of an embodiment of the present invention, there is also provided a control device for a microgrid system, the microgrid system comprising: a micro-source device, an energy storage device, an electrical load, and a micro-grid control device, FIG. 5 is according to the present invention. A schematic diagram of a control device of a microgrid system according to an embodiment, as shown in FIG. 5, the device includes: a detecting unit 520, configured to detect an operating parameter of the microgrid system by using a microgrid control device, where the operating parameter includes at least: The real-time power generation power PW0 of the micro-source device, the real-time power consumption PZ of the load that has been turned on in the power load, the maximum charge and discharge power rating PE of the energy storage device, and the control unit 540, for the micro-grid system according to the detected operating parameters Perform power balance and / or energy balance control.

Through the above method, the energy prediction and hierarchical management control of the equipment load is realized when the microgrid system is off-grid, and the microgrid off-grid operation is stable and reliable, thereby realizing the fineness of load energy prediction and overall demand. The technical effect of the control, and thus the existing technical problems of controlling the instantaneous voltage balance of the microgrid power supply system, it is difficult to finely control the load energy prediction and the overall demand.

It should be noted that the micro-source device, the energy storage device, the electrical load and the micro-network control device may be operated in a computer terminal as part of the device, and the function implemented by the module may be performed by a processor in the computer terminal. The computer terminal can also be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a palm computer, and a mobile Internet device (MID), a PAD, and the like.

Optionally, the control unit includes: a determining module, configured to determine, according to the detected operating parameter, whether the real-time power generation power PW0 of the micro-source device is less than the real-time power consumption PZ of the opened load in the power load; the first control module uses When it is determined that the real-time power generation PW0 of the micro-source device is smaller than the real-time power consumption PZ of the load that has been turned on in the power load, the energy storage device is controlled to discharge at a predetermined discharge power PF, where PF=PZ-PW0; a second control module, configured to control the energy storage device to charge at a predetermined charging power PC, in a case where it is determined that the real-time power generation power PW0 of the micro-source device is greater than the real-time power consumption PZ of the load that has been turned on in the power load, wherein PC=PW0-PZ.

It should be noted that the foregoing determining module, the first control module and the second control module may be run in the computer terminal as part of the device, and the functions implemented by the module may be performed by a processor in the computer terminal, and the computer terminal is also It can be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a palm computer, and a mobile Internet device (MID), a PAD, and the like.

Optionally, the first control module includes: a first determining submodule, configured to determine whether the predetermined discharge power PF is greater than a maximum charge and discharge rated power PE of the energy storage device; and an electronic supply module configured to determine that the predetermined discharge power PF is greater than the energy storage In the case of the maximum charge and discharge rated power of the device, the power supply to the low priority load in the opened load is stopped.

It should be noted that the foregoing first determining sub-module and the electronic providing module may be operated in a computer terminal as part of the device, and the functions implemented by the above module may be performed by a processor in the computer terminal, and the computer terminal may also be intelligent. Mobile devices (such as Android phones, iOS phones, etc.), tablets, handheld computers, and mobile Internet devices (MID), PAD and other terminal devices.

Optionally, the second control module includes: a second determining submodule, configured to determine whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device; and the first sending submodule is configured to determine that the predetermined charging power PC is greater than The maximum charge and discharge rated power PE of the energy storage device sends a first power limit command to the micro source device to limit the micro source device to generate power with the first predetermined real time limit power PW1, wherein PW1=PW0-PZ-PE.

It should be noted that the foregoing second determining sub-module and the first transmitting sub-module may be run in a computer terminal as part of the device, and the functions implemented by the foregoing module may be executed by a processor in the computer terminal, and the computer terminal may also be It is a smart phone (such as Android phone, iOS phone, etc.), tablet computer, PDA, and mobile Internet devices (MID), PAD and other terminal devices.

Optionally, the device further includes: a third determining submodule, configured to determine, after determining whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device, and determining that the predetermined charging power PC is smaller than a maximum of the energy storage device In the case of charging and discharging the rated power PE, determining whether the battery capacity SOC of the energy storage device is greater than a preset value; and the second sending submodule, configured to send the second power limit to the micro source device when the SOC is greater than a preset value An instruction to limit the micro-source device to generate power at a second predetermined real-time limited power PW2, wherein PW2=PW0-PZ.

It should be noted that the foregoing third determining sub-module and the second sending sub-module may be run in a computer terminal as part of the device, and the functions implemented by the above-mentioned modules may be performed by a processor in the computer terminal, and the computer terminal may also It is a smart phone (such as Android phone, iOS phone, etc.), tablet computer, PDA, and mobile Internet devices (MID), PAD and other terminal devices.

Optionally, the control unit includes: a prediction module, configured to detect the opened load according to the detected electrical load The real-time power PZ is used to predict the amount of power that needs to be consumed by the specified priority load in the first preset time period and the remaining power generation amount of the micro-source device in the first preset time period to obtain a corresponding prediction result; The module is configured to obtain the current amount of power stored in the energy storage device and the power consumed by the specified priority load in the second preset time period, to obtain a corresponding acquisition result; and a third control module, configured to use the prediction result and the acquisition result Control the priority loads in the opened load to balance the energy of the microgrid system.

It should be noted that the foregoing prediction module, the acquisition module, and the third control module may be run in a computer terminal as part of the device, and the functions implemented by the module may be performed by a processor in the computer terminal, and the computer terminal may also be Smartphones (such as Android phones, iOS phones, etc.), tablets, PDAs, and mobile Internet devices (MID), PAD and other terminal devices.

Optionally, the apparatus further includes: an executing unit, configured to perform power balance control on the microgrid system according to the detected operating parameter, when PF>0, and PW+PF≠PZ, or when PC>0 When the PW≠PZ+PC is executed, the abnormal alarm processing is executed.

It should be noted that the foregoing execution unit may be run in a computer terminal as part of the device, and the functions implemented by the above module may be performed by a processor in the computer terminal, and the computer terminal may also be a smart phone (eg, Android mobile phone, iOS). Mobile phones, etc., tablet computers, PDAs, and mobile Internet devices (MID), PAD and other terminal devices.

It should be noted that the embodiments of the apparatus in the second embodiment correspond to the embodiments of the method in the first embodiment, and details are not described herein again.

The various functional units provided by the embodiments of the present application may be operated in a mobile terminal, a computer terminal, or the like, or may be stored as part of a storage medium.

Thus, embodiments of the present invention may provide a computer terminal, which may be any computer terminal device in a group of computer terminals. Optionally, in this embodiment, the foregoing computer terminal may also be replaced with a terminal device such as a mobile terminal.

Optionally, in this embodiment, the computer terminal may be located in at least one network device of the plurality of network devices of the computer network.

In this embodiment, the computer terminal may execute the program code of the following steps in the control method of the micro-grid system: detecting the operating parameters of the micro-grid system through the micro-network control device, where the operating parameters include at least: real-time power generation of the micro-source device The power PW0, the real-time power PZ of the load that has been turned on in the power load, the maximum charge and discharge rated power PE of the energy storage device, and the power balance and/or energy balance control of the micro grid system according to the detected operating parameters.

Optionally, the computer terminal can include: one or more processors, memory, and transmission devices.

The memory can be used to store software programs and modules, such as the control method of the microgrid system and the program instructions/modules corresponding to the device in the embodiment of the present invention, and the processor executes the software programs and modules stored in the memory, thereby executing each A functional application and data processing, that is, a control method of the above microgrid system is implemented. The memory may include a high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, the memory can further include memory remotely located relative to the processor, which can be connected to the terminal over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The above transmission device is for receiving or transmitting data via a network. Specific examples of the above network may include a wired network and a wireless network. In one example, the transmission device includes a Network Interface Controller (NIC) that can be connected to other network devices and routers via a network cable to communicate with the Internet or a local area network. In one example, the transmission device is a Radio Frequency (RF) module for communicating with the Internet wirelessly.

Specifically, the memory is used to store preset action conditions and information of the preset rights user, and an application.

The processor can call the memory stored information and the application by the transmitting device to execute the program code of the method steps of each of the alternative or preferred embodiments of the above method embodiments.

A person skilled in the art can understand that the computer terminal can also be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a palm computer, and a mobile Internet device (MID), a PAD, and the like.

A person of ordinary skill in the art may understand that all or part of the steps of the foregoing embodiments may be completed by a program to instruct terminal device related hardware, and the program may be stored in a computer readable storage medium, and the storage medium may be Including: flash disk, read-only memory (ROM), random access memory (RAM), disk or optical disk.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be used to save program code executed by the control method of the micro grid system provided by the foregoing method embodiment and the device embodiment.

Optionally, in this embodiment, the foregoing storage medium may be located in any one of the computer terminal groups in the computer network, or in any one of the mobile terminal groups.

Optionally, in the present embodiment, the storage medium is arranged to store program code for performing the following steps: The operating parameters of the microgrid system are detected by the microgrid control device, wherein the operating parameters include at least: real-time power generation PW0 of the micro-source device, real-time power PZ of the load that has been turned on in the power load, and maximum charge and discharge rating of the energy storage device. Power PE; power balance and/or energy balance control of the microgrid system based on the detected operating parameters.

Alternatively, in the present embodiment, the storage medium may also be provided as program code of various preferred or optional method steps provided by the control method of the microgrid system.

The control method and apparatus of the microgrid system according to the present invention are described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the control method and apparatus of the microgrid system proposed by the present invention without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the content of the appended claims.

Further, according to another aspect of an embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program executes a control method of the micro grid system.

According to another aspect of an embodiment of the present invention, there is also provided a processor for running a program, wherein a program of controlling a microgrid system is executed while the program is running.

According to another aspect of the embodiments of the present invention, a terminal is provided, including: a detecting unit, configured to detect an operating parameter of a microgrid system by using a microgrid control device, where the operating parameter includes at least: real-time power generation of the micro-source device Power PW0, real-time power PZ of the load that has been turned on in the electrical load, maximum charge and discharge rated power PE of the energy storage device; control unit for power balancing and/or energy of the microgrid system based on the detected operating parameters Balance control; a processor, a processor running program, wherein the program runs a control method of the micro grid system for data output from the detecting unit and the control unit.

According to another aspect of the embodiments of the present invention, a terminal is provided, including: a detecting unit, configured to detect an operating parameter of a microgrid system by using a microgrid control device, where the operating parameter includes at least: real-time power generation of the micro-source device Power PW0, real-time power PZ of the load that has been turned on in the electrical load, maximum charge and discharge rated power PE of the energy storage device; control unit for power balancing and/or energy of the microgrid system based on the detected operating parameters Balance control; a storage medium for storing a program, wherein the program performs a control method of the micro grid system for data output from the detecting unit and the control unit at runtime.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

In the embodiments of the present invention, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided by the present application, it should be understood that the disclosed technical content may be through other The way to achieve. The device embodiments described above are only schematic. For example, the division of the unit may be a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, unit or module, and may be electrical or otherwise.

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

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like. .

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims (18)

1. A method for controlling a microgrid system, comprising: a micro-source device, an energy storage device, a power load, and a micro-grid control device, wherein the method comprises:

   Detecting, by the micro-network control device, an operating parameter of the micro-grid system, where the operating parameter includes at least: a real-time power generation power PW0 of the micro-source device, a real-time power consumption PZ of the load that has been turned on, The maximum charge and discharge rated power PE of the energy storage device;

   Power balancing and/or energy balance control is performed on the microgrid system based on the detected operational parameters.
2. The method according to claim 1, wherein the power balance control of the microgrid system according to the detected operating parameters comprises:

   Determining, according to the detected operating parameter, whether the real-time power generation PW0 of the micro-source device is smaller than the real-time power PZ of the opened load of the power load;

   If less, controlling the energy storage device to discharge at a predetermined discharge power PF, wherein PF=PZ-PW0;

   If it is greater, the energy storage device is controlled to be charged at a predetermined charging power PC, where PC = PW0 - PZ.
3. The method of claim 2, wherein controlling the energy storage device to discharge at a predetermined discharge power PF comprises:

   Determining whether the predetermined discharge power PF is greater than a maximum charge and discharge rated power PE of the energy storage device;

   If it is greater, the power supply to the low priority load in the opened load is stopped.
4. The method of claim 2, wherein controlling charging of the energy storage device at a predetermined charging power PC comprises:

   Determining whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device;

   If greater than, send a first power limit instruction to the micro source device to limit the micro source device to generate power at a first predetermined real time limited power PW1, where PW1=PW0-PZ-PE.
5. The method according to claim 4, wherein after determining whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device, the method further comprises:

   If it is determined that the predetermined charging power PC is smaller than the maximum charging and discharging rated power PE of the energy storage device, determining whether the battery capacity SOC of the energy storage device is greater than a preset value;

   And if the SOC is greater than the preset value, sending a second power limit instruction to the micro source device to limit the micro source device to generate power by using a second predetermined real time limit power PW2, where PW2=PW0-PZ .
6. The method of claim 1 wherein performing energy balance control on the microgrid system based on the detected operational parameters comprises:

   Determining, according to the detected real-time power consumption PZ of the load that has been turned on in the power load, the amount of power that needs to be consumed in the first predetermined time period of the load in the opened load, and the micro-source device is Remaining power generation amount in the first preset time period, and obtaining a corresponding prediction result;

   Acquiring the amount of power currently stored by the energy storage device and the amount of power consumed by the load of the specified priority in the second preset time period to obtain a corresponding acquisition result;

   And determining, according to the prediction result and the obtaining result, each priority load in the opened load to balance energy of the micro grid system.
7. The method according to claim 2, wherein after the power balance control is performed on the microgrid system according to the detected operating parameter, the method further comprises:

   When PF>0, and PW0+PF≠PZ, or when PC>0, and PW0≠PZ+PC, abnormal alarm processing is performed.
8. A control device for a microgrid system, comprising: a micro-source device, an energy storage device, an electrical load, and a micro-network control device, wherein the device comprises:

   a detecting unit, configured to detect an operating parameter of the microgrid system by using a microgrid control device, where the operating parameter includes at least: a real-time generating power PW0 of the micro-source device, and a load that has been turned on in the electrical load Real-time electric power PZ, maximum charge and discharge rated power PE of the energy storage device;

   And a control unit, configured to perform power balance and/or energy balance control on the micro grid system according to the detected operating parameter.
9. The device according to claim 8, wherein the control unit comprises:

   a determining module, configured to determine, according to the detected operating parameter, whether the real-time generating power PW0 of the micro-source device is less than a real-time power PZ of the opened load of the power-on load;

   a first control module, configured to control the energy storage device to have a predetermined discharge power PF when it is determined that the real-time power generation PW0 of the micro-source device is less than the real-time power consumption PZ of the load that has been turned on in the power load Performing a discharge, wherein PF=PZ-PW0;

   a second control module, configured to determine that the real-time power generation PW0 of the micro-source device is greater than the use In the case where the real-time power consumption PZ of the load has been turned on in the electrical load, the energy storage device is controlled to be charged at a predetermined charging power PC, where PC = PW0 - PZ.
10. The apparatus according to claim 9, wherein the first control module comprises:

    a first determining submodule, configured to determine whether the predetermined discharge power PF is greater than a maximum charge and discharge rated power PE of the energy storage device;

    And an electronic supply module, configured to stop supplying power to the low priority load in the opened load if it is determined that the predetermined discharge power PF is greater than a maximum charge and discharge rated power PE of the energy storage device.
11. The device according to claim 9, wherein the second control module comprises:

    a second determining sub-module, configured to determine whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device;

    a first sending submodule, configured to send a first power limiting instruction to the micro source device to determine that the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device The micro-source device generates power with a first predetermined real-time limited power PW1, where PW1=PW0-PZ-PE.
12. The device according to claim 11, wherein the device further comprises:

    a third determining submodule, configured to determine, after determining whether the predetermined charging power PC is greater than a maximum charging and discharging rated power PE of the energy storage device, and determining that the predetermined charging power PC is smaller than a maximum of the energy storage device In the case of charging and discharging the rated power PE, determining whether the battery capacity SOC of the energy storage device is greater than a preset value;

    a second sending submodule, configured to send a second power limiting instruction to the micro source device to limit the micro source device to limit power PW2 in a second predetermined real time if the SOC is greater than the preset value Power generation is performed, where PW2 = PW0-PZ.
13. The device according to claim 8, wherein the control unit comprises:

    a prediction module, configured to predict, according to the detected real-time power consumption PZ of the opened load of the power load, a quantity of power required to be consumed by the specified priority load in the opened load during the first preset time period The remaining power generation amount of the micro-source device in the first preset time period is obtained, and a corresponding prediction result is obtained;

    An obtaining module, configured to acquire a current amount of power stored by the energy storage device and a quantity of power consumed by the specified priority load in a second preset time period, to obtain a corresponding acquisition result;

    And a third control module, configured to control, according to the prediction result and the obtaining result, each priority load in the opened load to balance energy of the micro grid system.
14. The device according to claim 9, wherein the device further comprises:

    An execution unit, configured to perform power balance control on the microgrid system according to the detected operating parameter, when PF>0, and PW0+PF≠PZ, or when PC>0, and PW0≠PZ When the PC is used, the abnormal alarm processing is executed.
15. A storage medium, characterized in that the storage medium comprises a stored program, wherein the program executes the control method of the microgrid system according to any one of claims 1 to 7.
16. A processor, wherein the processor is configured to execute a program, wherein the program is executed to execute the control method of the microgrid system according to any one of claims 1 to 7.
17. A terminal, comprising: a micro-source device, an energy storage device, a power load, and a micro-network control device, wherein the terminal comprises:

    a detecting unit, configured to detect an operating parameter of the microgrid system by using a microgrid control device, where the operating parameter includes at least: a real-time generating power PW0 of the micro-source device, and a load that has been turned on in the electrical load Real-time electric power PZ, maximum charge and discharge rated power PE of the energy storage device;

    a control unit, configured to perform power balance and/or energy balance control on the micro grid system according to the detected operating parameter;

    a processor, wherein the processor runs a program, wherein the program executes the following processing steps for data output from the detecting unit and the control unit:

    Detecting, by the micro-network control device, an operating parameter of the micro-grid system, where the operating parameter includes at least: a real-time power generation power PW0 of the micro-source device, a real-time power consumption PZ of the load that has been turned on, The maximum charge and discharge rated power PE of the energy storage device;

    Power balancing and/or energy balance control is performed on the microgrid system based on the detected operational parameters.
18. A terminal, comprising: a micro-source device, an energy storage device, a power load, and a micro-network control device, wherein the terminal comprises:

    a detecting unit, configured to detect an operating parameter of the microgrid system by using a microgrid control device, where the operating parameter includes at least: a real-time generating power PW0 of the micro-source device, and a load that has been turned on in the electrical load Real-time electric power PZ, maximum charge and discharge rated power PE of the energy storage device;

    a control unit, configured to perform power balance and/or energy balance control on the micro grid system according to the detected operating parameter;

    a storage medium for storing a program, wherein the program performs the following processing steps for data output from the detecting unit and the control unit at runtime:

    Detecting, by the micro-network control device, an operating parameter of the micro-grid system, where the operating parameter includes at least: a real-time power generation power PW0 of the micro-source device, a real-time power consumption PZ of the load that has been turned on, The maximum charge and discharge rated power PE of the energy storage device;

    Power balancing and/or energy balance control is performed on the microgrid system based on the detected operational parameters.

Images