CN107359642B - Micro-grid region energy control system and control method - Google Patents
Micro-grid region energy control system and control method Download PDFInfo
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- CN107359642B CN107359642B CN201710641036.1A CN201710641036A CN107359642B CN 107359642 B CN107359642 B CN 107359642B CN 201710641036 A CN201710641036 A CN 201710641036A CN 107359642 B CN107359642 B CN 107359642B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
Abstract
The invention discloses a micro-grid region energy control system and a control method, wherein a micro-grid region comprises one or more micro-grid units, each micro-grid unit comprises a unit energy router and at least one of new energy power generation equipment, energy storage equipment and power utilization equipment; the micro-grid area is provided with an area energy router and is connected with a public power grid through the area energy router; the microgrid region is provided with a region new energy power generation device and a region energy storage device which are shared by a plurality of microgrid units, and the region new energy power generation device and the region energy storage device are connected with a region energy router. The invention solves the problem of poor stability of the micro-grid energy control system in the prior art, meets the peak shifting operation requirement of the power grid, reduces the power consumption cost and simultaneously improves the utilization efficiency of new energy power generation.
Description
Technical Field
The invention relates to the technical field of microgrid energy control, in particular to a microgrid region energy control system and a control method.
Background
From the development trend of energy use, the traditional fossil energy is more and more polluted on the environment, and the overall use ratio of the traditional fossil energy is more and more limited; the new energy technology is developed rapidly, and the cost is cheaper and cheaper. Therefore, development and utilization of new energy sources are on an increasing trend. However, new energy sources such as photovoltaic power generation, wind power generation and the like have the disadvantage that output power cannot be stably supplied. The phenomena of limitation of photovoltaic output, waste and insufficient utilization of new energy such as wind abandonment and the like are caused.
Aiming at the problem of poor stability of a microgrid energy control system in the related technology, an effective solution is not provided at present.
Disclosure of Invention
The invention provides a microgrid region energy control system and a control method, which are used for at least solving the problem of poor stability of a microgrid energy control system in the prior art.
In order to solve the technical problem, according to an aspect of the embodiments of the present disclosure, the present invention provides a microgrid region energy control system, wherein a microgrid region includes one or more microgrid units, each microgrid unit includes a unit energy router and at least one device of new energy power generation equipment, energy storage equipment and power consumption equipment; the micro-grid area is provided with an area energy router and is connected with a public power grid through the area energy router; the microgrid region is provided with a region new energy power generation device and a region energy storage device which are shared by a plurality of microgrid units, and the region new energy power generation device and the region energy storage device are connected with a region energy router; the regional energy router generates a control parameter Pc according to the peak-valley adjustment requirement of the public power grid, and sends the control parameter Pc to the unit energy routers of each micro-grid unit for energy input and output control, so that balance control between the electricity utilization load requirement and the new energy generation amount, the public power grid energy exchange and the energy storage equipment in the micro-grid regional energy control system is realized.
Further, the microgrid region also has a regional common load device common to the plurality of microgrid elements.
Further, the cell energy router comprises: the automatic unit adjusting module is used for controlling real-time energy power balance in the microgrid unit; the unit data acquisition module is used for acquiring the real-time generated energy Wg of the new energy power generation equipment, the real-time power consumption Wl of the power utilization equipment and the state information of the energy storage equipment, wherein the state information of the energy storage equipment comprises the real-time charging amount Wc, the real-time discharging amount Wd and the residual electric quantity SOC of the energy storage equipment; the unit monitoring and metering module is used for analyzing the real-time energy demand or energy supply in the microgrid unit and the actual output energy or input energy of the energy router of the metering unit and sending the actual output energy or input energy to the regional energy router; and the unit control processing module is used for comparing the received control parameter Pc sent by the regional energy router with an energy output expected parameter Ps or an energy input expected parameter Pb set by a user in the microgrid unit, sending a discharging or charging control parameter and command to the energy storage equipment according to the comparison result, and controlling the input and output of the energy of the unit energy router.
Further, the regional energy router comprises: the automatic region adjusting module is used for controlling the real-time energy power balance of the micro-grid region; the regional data analysis module is used for receiving the energy demand and supply information sent by the unit energy router, analyzing the supply and demand relationship, determining a real-time control parameter Pc representing the electricity price by combining the peak-valley regulation demand of the public power grid, and sending the real-time control parameter Pc to the unit energy router; the regional data acquisition module is used for acquiring real-time power generation Wgq of a regional new energy power generation device, real-time power consumption Wlq of regional public load equipment and state information of regional energy storage equipment in real time, wherein the state information of the regional energy storage equipment comprises real-time charging amount Wcq, real-time discharging amount Wdq of the regional energy storage equipment and residual electric quantity SOCq; and the regional control processing module is used for determining and sending a discharging or charging control parameter and an instruction to the regional energy storage equipment according to the comparison between the control parameter Pc and the peak-to-valley electricity price of the public power grid, and controlling the energy input and output of the public power grid.
Further, the regional energy router further comprises: and the region evaluation accounting module is used for receiving the real-time input energy and output energy quantity sent by each unit energy router, obtaining the energy input cost and energy output benefit of each micro-grid unit according to the control parameter Pc, counting and summarizing, and performing new energy power generation benefit evaluation and benefit evaluation of peak shifting and dispatching with a public power grid.
Further, the new energy power generation apparatus includes one of: photovoltaic power generation equipment, wind power generation equipment and geothermal power generation equipment; the regional new energy power generation device comprises one of the following components: photovoltaic power generation device, wind power generation device, geothermal power generation device.
According to another aspect of the embodiments of the present disclosure, a method for controlling a unit energy router in a microgrid region energy control system is provided, including: gather the electric quantity parameter information of equipment in the microgrid unit, wherein, electric quantity parameter information includes: the system comprises a new energy device real-time generating capacity Wg, an electric device real-time power consumption Wl, an energy storage device real-time charging amount Wc or real-time discharging amount Wd and a residual electric quantity SOC; receiving a control parameter Pc sent by a region energy router; and controlling the energy input and output of the microgrid region according to the acquired electric quantity parameter information and the received control parameter Pc so as to realize the balance control between the electric load demand and the new energy generated energy, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system.
Further, before acquiring the electric quantity parameter information of each device in the microgrid unit, the method further comprises the following steps: and responding to the triggered initialization setting operation, and finishing the initial parameter setting of the microgrid unit, wherein the initial parameters comprise: the energy storage device reserves electric quantity Qy, the unit energy router energy output expected parameter Ps and the unit energy router energy input expected parameter Pb.
Further, according to the collected electric quantity parameter information and the received control parameter Pc, the micro-grid region energy input and output are controlled, so that balance control between the electric load demand and the new energy generated energy, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is realized, and the method comprises the following steps:
when Wg is larger than Wl, if SOC is larger than or equal to Qy, controlling to provide electricity Ws to the microgrid area as Wg-Wl;
when Wg is larger than Wl, if SOC is smaller than Qy, controlling charging Wc to the energy storage equipment to be Wg-Wl; and if the charging power of the energy storage equipment reaches a rated value Wcmax after the energy storage equipment is charged, outputting energy Ws to the microgrid region, wherein the energy Ws is Wg-Wl-Wcmax, and transmitting the energy output quantity Ws to the region energy router.
Further, according to the collected electric quantity parameter information and the received control parameter Pc, the micro-grid region energy input and output are controlled, so that balance control between the electric load demand and the new energy generated energy, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is realized, and the method comprises the following steps:
when Wg is less than or equal to Wl, if SOC is greater than Qy, controlling the energy storage device to discharge Wd to be Wl-Wg, and judging whether the discharge capacity of the energy storage device is surplus through the following formula: wx is Wdmax + Wg-Wl, wherein Wdmax is the rated maximum real-time electric energy Wdmax output by the energy storage device, if Wx is larger than or equal to 0, the discharging capacity of the energy storage device is judged to be redundant, if the control parameter Pc is larger than or equal to Ps at the moment, the current output electric energy benefit is judged to be large, the energy Ws is controlled to be output to the microgrid region, if the control parameter Pc is smaller than Ps at the moment, the energy storage and discharge of the microgrid unit are judged to only meet the load of the microgrid unit, and the electric energy is controlled not to be output to the microgrid region;
when Wg is less than or equal to Wl, if SOC is less than Qy and the control parameter Pc is less than or equal to Pb, judging that the current input energy benefit is large, controlling the input energy Wb from the regional energy router to be Wl-Wg + Wc, meeting the load power, simultaneously charging the energy storage equipment Wc, and sending the energy demand Wb to the regional energy router;
when Wg is less than or equal to Wl, if SOC is less than Qy and the control parameter Pc is more than Pb, controlling the energy storage equipment to discharge Wd to Wl-Wg; and when the energy storage capacity of the energy storage equipment reaches the lower limit value, stopping discharging the energy storage equipment, inputting electric energy Wb from the microgrid region as Wl-Wg, and sending the energy demand Wb to the region energy router.
According to another aspect of the embodiments of the present disclosure, a method for controlling a regional energy router in a microgrid regional energy control system is provided, including: gather the electric quantity parameter information of equipment in the microgrid area, wherein, electric quantity parameter information includes: the method comprises the following steps that the real-time power generation amount Wgq of a regional new energy power generation device, the real-time power consumption Wlq of regional public load equipment, the real-time charging amount Wcq or real-time discharging amount Wdq of regional energy storage equipment, residual power SOCq, the real-time price PWS of electricity sold to a public power grid by a microgrid region, and the real-time price PWB of electricity bought to the public power grid by the microgrid region are obtained; receiving and summarizing output energy Ws and input energy Wb sent by each unit energy router, and determining energy supply WG and energy demand WX; and controlling the energy input and output of the microgrid region according to the acquired electric quantity parameter information and the determined energy supply WG and energy demand WX so as to realize the balance control between the electricity load demand and the new energy generated energy, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system.
Further, before collecting the electric quantity parameter information of the devices in the microgrid area, the method further comprises the following steps: and responding to the triggered initialization setting operation, and finishing the initial parameter setting of the microgrid area, wherein the initial parameters comprise: the area energy storage device reserves an electric quantity Qyq, uses the utility grid protocol peak power rates PWH and the trough power rates PWL and the corresponding time periods, and the initial values PJ of the control parameters Pc, PJ ═ PWH + PWL)/2.
Further, according to the collected electric quantity parameter information, the determined energy supply WG and the energy demand WX, the micro-grid region energy input and output are controlled, so that balance control between the electricity load demand and the new energy generating capacity, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is achieved, and the method comprises the following steps:
when WG > WX, determining a current control parameter Pc ═ ((WG-WX)/WG) × PJ and controlling a regional energy storage device to charge Wcq ═ WG-WX, when Wcq reaches energy storage device charging rated power Wcqmax, controlling a regional energy storage router to output energy Wsq ═ WG-WX-Wcqmax to a public grid, determining a current control parameter Pc ═ PWS and detecting the residual energy of the regional energy storage device, if the residual energy SOCq > of the regional energy storage device is Qyq, controlling the regional energy storage device to stop charging, and controlling the regional energy storage router to output energy Wsq ═ WG-WX to the public grid, and simultaneously determining the current control parameter: pc ═ PWS.
Further, according to the collected electric quantity parameter information, the determined energy supply WG and the energy demand WX, the micro-grid region energy input and output are controlled, so that balance control between the electricity load demand and the new energy generating capacity, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is achieved, and the method comprises the following steps:
in WG<And WX, determining the current control parameters:
and judging whether the current utility grid is at a valley price, if not, controlling the regional energy storage device to discharge Wdq to be WX-WG, and when the regional energy storage device discharges to reach the discharge rated power Wdqmax, controlling the regional energy router to input energy Wbq from the utility grid to be WX-WG-Wdqmax,adjusting the control parameter Pc to Pc ═ PWB; if Wdq is less than the discharge rated power Wdqmax of the regional energy storage device, the residual charge SOCq of the regional energy storage device>Qyq, and when the current utility grid is at peak power price, the control area energy router outputs energy Wsq WG + Wdqmax-WX to the utility grid, the control area energy storage device discharges according to rated power Wdqmax, and the current system control parameter Pc is determined to be PWB;
when WG < WX, when the current utility grid is at the valley price, the regional energy router is controlled to input energy Wbq from the utility grid, WX-WG + Wcq, the regional energy storage device is charged Wcq, and the current system control parameter Pc is determined to be PWB.
The invention provides a set of distributed micro-grid energy control system and device with new energy power generation and energy storage functions, and the real-time control parameters of the system are automatically adjusted by collecting the energy supply and energy demand of each unit in real time and using the difference between the energy supply and energy demand. Each unit combines the required power of the electric load of the local unit, the new energy power generation energy supply capacity and the state of electric energy storage according to the real-time control parameters, and simultaneously combines the user setting of the local unit, and the unit energy router automatically allocates the use, storage and peak load shifting of energy. Meanwhile, the micro-grid region energy router system is matched with peak shifting and dispatching requirements of a public power grid, the flow direction of energy is automatically controlled, and energy balance is carried out. By automatically adjusting the balance between the demand of the electric load for the micro-grid and the generated energy of new energy, the energy exchange of the public power grid and the electric energy storage, the peak shifting operation requirement of the power grid is met, the electricity consumption cost is reduced, and the utilization efficiency of the photovoltaic, wind power and other new energy power generation is maximized. The invention can improve the power generation utilization efficiency of the new energy power generation device to the maximum extent in the practical application environment, promote the spontaneous self-use of the new energy power generation, reduce the local consumption, reduce the electric energy waste and simultaneously reduce the power consumption cost of users. The peak and valley regulation function of the power grid is realized, and the electric energy of the power grid is reasonably utilized.
Drawings
Fig. 1 is a schematic diagram of an alternative configuration of a microgrid zone energy control system according to an embodiment of the present invention;
fig. 2 is a block diagram illustrating an alternative configuration of a unit energy router in the microgrid zone energy control system according to an embodiment of the present invention;
fig. 3 is a block diagram illustrating an alternative configuration of a regional energy router in the microgrid regional energy control system according to an embodiment of the present invention;
fig. 4 is an alternative flowchart of a method for controlling a unit energy router in a microgrid region energy control system according to an embodiment of the present invention;
fig. 5 is an alternative flowchart of a method for controlling a unit energy router in a microgrid region energy control system according to an embodiment of the present invention;
fig. 6 is an alternative flowchart of a method for controlling a regional energy router in a piconet regional energy control system according to an embodiment of the invention; and
fig. 7 is an alternative flowchart of a method for controlling a regional energy router in a piconet regional energy control system according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
The microgrid area energy control system provided by the invention is explained with reference to the accompanying drawings.
Fig. 1 is a schematic diagram illustrating an alternative configuration of a microgrid area energy control system according to an embodiment of the present invention, wherein a microgrid area may be understood as a residential cell, and corresponding units a to F are home units in the cell; the microgrid region can also be understood as a factory, and the corresponding units A to F are workshop units in the factory; the microgrid region may also be understood as an industrial park, and the corresponding units a to F are factories in the park.
As shown in fig. 1, the microgrid region includes one or more microgrid units, each microgrid unit includes a unit energy router (see unit a energy router, unit B energy router … unit F energy router in the figure) and at least one of new energy power generation equipment, energy storage equipment and electric equipment; the micro-grid area is provided with an area energy router and is connected with a public power grid through the area energy router; the microgrid region is provided with a region new energy power generation device and a region energy storage device which are shared by a plurality of microgrid units, and the region new energy power generation device and the region energy storage device are connected with a region energy router; the regional energy router generates a control parameter Pc according to the peak-valley adjustment requirement of the public power grid, and sends the control parameter Pc to the unit energy routers of each micro-grid unit for energy input and output control, so that balance control between the electricity utilization load requirement and the new energy generation amount, the public power grid energy exchange and the energy storage equipment in the micro-grid regional energy control system is realized. Preferably, the microgrid region also has a regional common load apparatus common to a plurality of microgrid elements. Preferably, the new energy power generation device includes one of: photovoltaic power generation equipment, wind power generation equipment and geothermal power generation equipment; the regional new energy power generation device comprises one of the following components: photovoltaic power generation device, wind power generation device, geothermal power generation device.
In the above embodiments, a set of distributed microgrid energy control system and device with new energy power generation and energy storage is provided, and by collecting the energy supply and energy demand of each unit in real time, the real-time control parameters of the system are automatically adjusted by using the difference between them. Each unit combines the required power of the electric load of the local unit, the new energy power generation energy supply capacity and the state of electric energy storage according to the real-time control parameters, and simultaneously combines the user setting of the local unit, and the unit energy router automatically allocates the use, storage and peak load shifting of energy. Meanwhile, the micro-grid region energy router system is matched with peak shifting and dispatching requirements of a public power grid, the flow direction of energy is automatically controlled, and energy balance is carried out. By automatically adjusting the balance between the demand of the electric load for the micro-grid and the generated energy of new energy, the energy exchange of the public power grid and the electric energy storage, the peak shifting operation requirement of the power grid is met, the electricity consumption cost is reduced, and the utilization efficiency of the photovoltaic, wind power and other new energy power generation is maximized. The invention can improve the power generation utilization efficiency of the new energy power generation device to the maximum extent in the practical application environment, promote the spontaneous self-use of the new energy power generation, reduce the local consumption, reduce the electric energy waste and simultaneously reduce the power consumption cost of users. The peak and valley regulation function of the power grid is realized, and the electric energy of the power grid is reasonably utilized.
Example 2
Based on the microgrid region energy control system provided in embodiment 1, an optional embodiment 2 of the present invention further provides a preferred implementation of a unit energy router in the microgrid region energy control system, specifically, fig. 2 shows an optional structural block diagram of the unit energy router in the microgrid region energy control system, and as shown in fig. 2, the unit energy router includes:
(1) an automatic adjustment module: the real-time energy power balance in the system unit is automatically controlled, and the system stability is maintained;
(2) a data acquisition module: collecting photovoltaic power generation output power in real time, namely real-time power generation amount Wg; the power consumption of the electric equipment is real-time electricity consumption Wl; state information of the energy storage device: the energy storage device comprises an energy storage device real-time charging amount Wc or real-time discharging amount Wd and a residual electric quantity SOC;
(3) a monitoring and metering module: analyzing the real-time energy demand or energy supply of the unit system, namely the unit electric energy input demand or unit output supply and the actual output energy or input energy of the metering unit energy router, and transmitting the information to the regional energy router in real time;
(4) the control processing module: comparing the real-time control parameter Pc sent by the received regional energy router with an energy output expected parameter Ps set by a unit user or an energy input expected parameter Pb, and determining and sending a discharging or charging control parameter and instruction to the energy storage equipment; and controlling the output and input energy of the energy source of the unit energy router.
It should be noted that the functional modules of the unit energy router may be integrated in a set of devices, or may be independent components, and perform data exchange through communication. The function modules of the regional energy router can be integrated in a set of devices, or can be independent components, and data exchange is carried out through communication. The communication among the distributed devices can be wired, wireless or power line carrier communication.
Example 3
Based on the microgrid region energy control system provided in embodiment 1, an optional embodiment 3 of the present invention further provides a preferred implementation of a region energy router in the microgrid region energy control system, specifically, fig. 3 shows an optional structural block diagram of the region energy router in the microgrid region energy control system, and as shown in fig. 3, the region energy router includes:
(1) an automatic adjustment module: the real-time energy power balance of the system in the area is automatically controlled, and the stability of the system is maintained;
(2) a data analysis module: receiving energy demand and supply information sent by the unit energy router, respectively summarizing and analyzing supply-demand relations, determining a real-time control parameter Pc (power consumption and demand) by combining peak-valley adjustment demands of a public power grid, namely a current electricity selling and selling transaction price similar to an area, and sending the real-time control parameter Pc to the unit energy router in the area in real time;
(3) a data acquisition module: collecting the output power of the regional photovoltaic power generation device in real time, namely the real-time power generation Wgq; consumed power of the regional utility load devices, i.e., real-time electricity usage Wlq, status information of the regional energy storage devices: a real-time charge Wcq or a real-time discharge Wdq, and a remaining charge amount SOCq;
(4) the control processing module: according to the real-time control parameter Pc, comparing the real-time control parameter Pc with the peak-to-valley electricity price of the public power grid, and determining and sending a discharging or charging control parameter and an instruction to the regional energy storage equipment; and energy input and output control with the public power grid;
(5) an evaluation accounting module: and receiving real-time input energy and output energy sent by each unit energy router, and multiplying the real-time input energy and the output energy by the real-time control parameter Pc to obtain the energy input cost and the energy output benefit of each unit. And carrying out statistics, summarizing and accumulation, carrying out photovoltaic power generation benefit evaluation in the micro-grid region, and carrying out benefit evaluation of peak shifting and dispatching with the public power grid.
It should be noted that the functional modules of the unit energy router may be integrated in a set of devices, or may be independent components, and perform data exchange through communication. The function modules of the regional energy router can be integrated in a set of devices, or can be independent components, and data exchange is carried out through communication. The communication among the distributed devices can be wired, wireless or power line carrier communication.
Example 4
Based on the microgrid area energy control system provided in embodiment 1, an optional embodiment 4 of the present invention further provides a method for controlling a unit energy router in the microgrid area energy control system, specifically, fig. 4 shows an optional flowchart of the method for controlling the unit energy router, and as shown in fig. 4, the method includes steps S402 to S406:
s402, collecting electric quantity parameter information of equipment in the microgrid unit, wherein the electric quantity parameter information comprises: the system comprises a new energy device real-time generating capacity Wg, an electric device real-time power consumption Wl, an energy storage device real-time charging amount Wc or real-time discharging amount Wd and a residual electric quantity SOC;
s404, receiving a control parameter Pc sent by the regional energy router;
and S406, controlling the energy input and output of the microgrid region according to the acquired electric quantity parameter information and the received control parameter Pc so as to realize balance control between the electricity load demand and the new energy generated energy, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system.
Preferably, before acquiring the electric quantity parameter information of each device in the microgrid unit, the method further includes: and responding to the triggered initialization setting operation, and finishing the initial parameter setting of the microgrid unit, wherein the initial parameters comprise: the energy storage device reserves electric quantity Qy, the unit energy router energy output expected parameter Ps and the unit energy router energy input expected parameter Pb.
Further, according to the collected electric quantity parameter information and the received control parameter Pc, the micro-grid region energy input and output are controlled, so that balance control between the electric load demand and the new energy generated energy, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is realized, and the method comprises the following steps:
when Wg is larger than Wl, if SOC is larger than or equal to Qy, controlling to provide electricity Ws to the microgrid area as Wg-Wl;
when Wg is larger than Wl, if SOC is smaller than Qy, controlling charging Wc to the energy storage equipment to be Wg-Wl; and if the charging power of the energy storage equipment reaches a rated value Wcmax after the energy storage equipment is charged, outputting energy Ws to the microgrid region, wherein the energy Ws is Wg-Wl-Wcmax, and transmitting the energy output quantity Ws to the region energy router.
Further, according to the collected electric quantity parameter information and the received control parameter Pc, the micro-grid region energy input and output are controlled, so that balance control between the electric load demand and the new energy generated energy, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is realized, and the method comprises the following steps:
when Wg is less than or equal to Wl, if SOC is greater than Qy, controlling the energy storage device to discharge Wd to be Wl-Wg, and judging whether the discharge capacity of the energy storage device is surplus through the following formula: wx is Wdmax + Wg-Wl, wherein Wdmax is the rated maximum real-time electric energy Wdmax output by the energy storage device, if Wx is larger than or equal to 0, the discharging capacity of the energy storage device is judged to be redundant, if the control parameter Pc is larger than or equal to Ps at the moment, the current output electric energy benefit is judged to be large, the energy Ws is controlled to be output to the microgrid region, if the control parameter Pc is smaller than Ps at the moment, the energy storage and discharge of the microgrid unit are judged to only meet the load of the microgrid unit, and the electric energy is controlled not to be output to the microgrid region;
when Wg is less than or equal to Wl, if SOC is less than Qy and the control parameter Pc is less than or equal to Pb, judging that the current input energy benefit is large, controlling the input energy Wb from the regional energy router to be Wl-Wg + Wc, meeting the load power, simultaneously charging the energy storage equipment Wc, and sending the energy demand Wb to the regional energy router;
when Wg is less than or equal to Wl, if SOC is less than Qy and the control parameter Pc is more than Pb, controlling the energy storage equipment to discharge Wd to Wl-Wg; and when the energy storage capacity of the energy storage equipment reaches the lower limit value, stopping discharging the energy storage equipment, inputting electric energy Wb from the microgrid region as Wl-Wg, and sending the energy demand Wb to the region energy router.
The above control method is specifically described below with reference to fig. 5 to better understand the present embodiment:
as shown in fig. 5, when the above control method is implemented, the following processes may be included:
(1) the unit user can set the parameters:
a. setting reserved electric quantity Qy of the energy storage equipment; the Qy parameter determines the self-consumption of the unit user electricity energy storage, and the unit energy router can judge whether the reserve electricity quantity of the unit is enough or not under the condition;
b. setting an energy output expected parameter Ps of the unit energy router; and the unit energy router compares the parameters with the control parameters Pc sent by the region energy router, and judges whether to provide electric energy for the micro-grid region under the condition of meeting. Ps is similar to the price of electricity sold to the microgrid region by the unit energy router;
c. setting an energy source input expected parameter Pb of the unit energy router; and the unit energy router compares the parameters with the control parameters Pc sent by the region energy router, and judges whether the electric energy is input from the microgrid region or not under the condition of meeting the conditions. Pb is similar to the price of a unit energy router buying electricity to a regional energy router. Ps < Pb is generally set.
(2) The unit energy router collects photovoltaic real-time power generation Wg, namely photovoltaic power generation power; collecting load real-time power consumption Wl, namely load power; and acquiring the real-time charging quantity Wc or the real-time discharging quantity Wd and the residual electric quantity SOC of the state of the energy storage device. And receiving the control parameter Pc sent by the area energy router.
(3) If Wg is larger than Wl, under the condition that the photovoltaic real-time power generation amount is larger than the load real-time power consumption amount, the photovoltaic power generation is sufficient, at the moment, if SOC is equal to Qy, namely the energy storage reserved power amount is sufficient, the power Ws is actively provided to the microgrid area equal to Wg-Wl; if the energy storage reservation is insufficient, the energy storage equipment is charged preferentially, the charging amount Wc is Wg-Wl, and at the moment, if the photovoltaic power generation amount is still sufficient and the energy storage charging power reaches a rated value Wcmax, the energy Ws is Wg-Wl-Wcmax and is output to the microgrid region at the same time. The unit energy router simultaneously transmits the energy output amount Ws to the regional energy router.
(4) Under the condition of insufficient photovoltaic power generation, whether the stored energy is sufficient or not is judged firstly. And under the condition of sufficient energy storage, issuing a control command to enable the energy storage discharge electric energy Wd to be equal to Wl-Wg. Meanwhile, if the energy storage discharge capacity is judged to have surplus: discharging the energy storage equipment to output rated maximum real-time electric energy Wdmax; and Wx is equal to Wdmax + Wg-Wl, if Wx > is equal to 0, the discharge capacity of stored energy is surplus, and if the control parameter Pc > of the microgrid region is equal to Ps at the moment, the current output electric energy benefit is large, the energy Ws is equal to Wdmax + Wg-Wl.
If the control parameter Pc < Ps, the energy storage and discharge of the unit only meet the shortage of the unit load, and the electric energy is not output to the microgrid region.
If the situation that the energy storage is insufficient is judged, if the control parameter Pc of the microgrid region is judged to be Pb, namely the input energy benefit is good at the moment, the energy Wb input from the region energy router is Wl-Wg + Wc, the load power is met, the energy storage is charged, the unit energy router sends an instruction to the energy storage equipment, and the energy storage equipment starts the charging energy Wc; and simultaneously transmitting the energy demand Wb to the regional energy router.
And if the control parameter Pc > Pb of the microgrid region is judged, discharging the part Wd meeting the load power shortage from the energy storage equipment to the load power shortage by the energy storage equipment, wherein the part Wd is equal to Wl-Wg. And if the energy storage capacity is close to the lower limit value due to continuous discharge, closing the energy storage discharge, inputting the electric energy Wb from the microgrid region as Wl-Wg, and sending the energy demand Wb to the region energy router.
(5) The unit energy router transmits input energy or output energy data, which actually occur, to the regional energy router in real time.
If the unit is not equipped with photovoltaic equipment or with energy storage equipment, the corresponding function is not performed.
Example 5
Based on the microgrid zone energy control system provided in embodiment 1, an optional embodiment 4 of the present invention further provides a method for controlling a zone energy router in the microgrid zone energy control system, specifically, fig. 6 shows an optional flowchart of the method for controlling the zone energy router, and as shown in fig. 6, the method includes steps S602 to 606:
s602, collecting electric quantity parameter information of equipment in the micro-network area, wherein the electric quantity parameter information comprises: the method comprises the following steps that the real-time power generation amount Wgq of a regional new energy power generation device, the real-time power consumption Wlq of regional public load equipment, the real-time charging amount Wcq or real-time discharging amount Wdq of regional energy storage equipment, residual power SOCq, the real-time price PWS of electricity sold to a public power grid by a microgrid region, and the real-time price PWB of electricity bought to the public power grid by the microgrid region are obtained;
s604, receiving and summarizing output energy Ws and input energy Wb sent by each unit energy router, and determining energy supply WG and energy demand WX;
and S606, controlling the energy input and output of the microgrid region according to the acquired electric quantity parameter information, the determined energy supply WG and the determined energy demand WX so as to realize balance control between the electricity load demand and the new energy generated energy, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system.
Preferably, before collecting the electric quantity parameter information of the devices in the microgrid area, the method further comprises the following steps: and responding to the triggered initialization setting operation, and finishing the initial parameter setting of the microgrid area, wherein the initial parameters comprise: the area energy storage device reserves an electric quantity Qyq, uses the utility grid protocol peak power rates PWH and the trough power rates PWL and the corresponding time periods, and the initial values PJ of the control parameters Pc, PJ ═ PWH + PWL)/2.
Further, according to the collected electric quantity parameter information, the determined energy supply WG and the energy demand WX, the micro-grid region energy input and output are controlled, so that balance control between the electricity load demand and the new energy generating capacity, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is achieved, and the method comprises the following steps:
when WG > WX, determining a current control parameter Pc ═ ((WG-WX)/WG) × PJ and controlling a regional energy storage device to charge Wcq ═ WG-WX, when Wcq reaches energy storage device charging rated power Wcqmax, controlling a regional energy storage router to output energy Wsq ═ WG-WX-Wcqmax to a public grid, determining a current control parameter Pc ═ PWS and detecting the residual energy of the regional energy storage device, if the residual energy SOCq > of the regional energy storage device is Qyq, controlling the regional energy storage device to stop charging, and controlling the regional energy storage router to output energy Wsq ═ WG-WX to the public grid, and simultaneously determining the current control parameter: pc ═ PWS.
Further, according to the collected electric quantity parameter information, the determined energy supply WG and the energy demand WX, the micro-grid region energy input and output are controlled, so that balance control between the electricity load demand and the new energy generating capacity, the public power grid energy exchange and the energy storage device in the micro-grid region energy control system is achieved, and the method comprises the following steps:
in WG<And WX, determining the current control parameters:
judging whether the current public power grid is at a valley electricity price, if the current public power grid is not at the valley electricity price, controlling the regional energy storage equipment to discharge Wdq to be WX-WG, when the regional energy storage equipment discharges to reach the discharge rated power Wdqmax, controlling the regional energy router to input energy Wbq from the public power grid to be WX-WG-Wdqmax, and adjusting a control parameter Pc to be PWB; if Wdq is less than the discharge rated power Wdqmax of the regional energy storage device, the residual charge SOCq of the regional energy storage device>Qyq, and when the current utility grid is at peak power price, the control area energy router outputs energy Wsq WG + Wdqmax-WX to the utility grid, the control area energy storage device discharges according to rated power Wdqmax, and the current system control parameter Pc is determined to be PWB;
when WG < WX, when the current utility grid is at the valley price, the regional energy router is controlled to input energy Wbq from the utility grid, WX-WG + Wcq, the regional energy storage device is charged Wcq, and the current system control parameter Pc is determined to be PWB.
The above control method is specifically described below with reference to fig. 7 to better understand the present embodiment:
as shown in fig. 7, when the above control method is implemented, the following processes may be included:
(1) and initializing the regional energy router. Setting Qyq a reserved electric quantity of the regional energy storage equipment; setting a peak power price PWH and a valley power price PWL using a public power grid protocol, and a corresponding time period; setting an initial value PJ of the control parameter Pc to be (PWH + PWL)/2;
(2) the regional energy router collects the regional photovoltaic real-time power generation Wgq; collecting area load real-time power usage Wlq; acquiring the real-time charging amount Wcq or the real-time discharging amount Wdq of the state of the regional energy storage equipment and the residual electric quantity SOCq, and acquiring the real-time price PWS of electricity sold to a public power grid by the microgrid region; acquiring real-time price PWB of electricity bought from a public power grid by a micro-grid area; PWS < PWB is typically.
(3) Receiving output energy Ws and input energy Wb sent by all unit energy routers in real time and respectively summarizing to obtain a micro-grid area:
the energy supply WG is Wgq + Ws1+ Ws2+ … Wsn,
the energy demand WX is Wlq + Wb1+ Wb2+ … Wbn.
(4) Comparing the energy supply WG and the energy demand WX of the microgrid region. If WG > WX and the microgrid region is sufficiently supplied with energy, determining a control parameter Pc of the current system to be ((WG-WX)/WG) PJ, namely adjusting the control parameter Pc from PJ downwards; simultaneously issuing a charging instruction to the regional energy storage equipment, wherein the real-time charging amount Wcq is WG-WX; if Wcq is close to the energy storage device charging rated power Wcqmax; the regional energy router outputs energy Wsq to the utility grid WG-WX-wcqmax. Pc ═ PWS, i.e., the Pc parameter is bottomed out. If the detected regional energy storage residual capacity SOCq > is Qyq, that is, the residual capacity is higher than the set reserved capacity value, the regional energy storage device stops charging, the regional energy router outputs energy Wsq to the public power grid WG-WX,
simultaneously determining current system control parameters: pc ═ PWS.
(5) If WG < WX, the microgrid region is insufficient in supplied energy, determining current system control parameters: pc (((WX-WG)/WX) +1) × PJ. At the moment, if the current public power grid is not the valley price, namely not the lowest price, a discharging instruction is sent to the regional energy storage equipment, and the discharging capability is as follows: wdq ═ WX-WG. If Wdq has approached the energy storage device discharge power rating, Wdqmax, the regional energy router inputs energy from the utility grid: Wbq-WX-WG-wdqmax the current system control parameter is adjusted to Pc-PWB. If Wdq is smaller than the rated discharge power Wdqmax of the energy storage device, at this time, it is determined that if the regional energy storage remaining capacity SOCq > is Qyq and the current utility grid is at the peak power price, the regional energy router outputs energy to the utility grid: wsq, WG + Wdqmax-WX. controls the energy storage device to discharge at rated power Wdqmax; the current system control parameter Pc is determined as PWB. And judging whether the current power grid is at the valley price, inputting energy from the public power grid by the regional energy router: wbq ═ WX-WG + Wcq. The energy storage device turns on the charging energy Wcq and determines the current system control parameter Pc ═ PWB.
(6) And the regional energy router records and stores the energy input or energy output data actually generated by each unit and load. And taking the product of the energy data and the real-time system control parameter Pc, integrating the time, taking the result as a benefit evaluation index, and carrying out periodic summary analysis as a reference for optimizing the operation of the system.
As can be seen from the above description, in the above embodiments of the present invention, a distributed microgrid energy control system and apparatus with new energy power generation and energy storage are provided, which automatically adjust the real-time control parameters of the system by collecting the energy supply and energy demand of each unit in real time and using the difference between them. Each unit combines the required power of the electric load of the local unit, the new energy power generation energy supply capacity and the state of electric energy storage according to the real-time control parameters, and simultaneously combines the user setting of the local unit, and the unit energy router automatically allocates the use, storage and peak load shifting of energy. Meanwhile, the micro-grid region energy router system is matched with peak shifting and dispatching requirements of a public power grid, the flow direction of energy is automatically controlled, and energy balance is carried out. By automatically adjusting the balance between the demand of the electric load for the micro-grid and the generated energy of new energy, the energy exchange of the public power grid and the electric energy storage, the peak shifting operation requirement of the power grid is met, the electricity consumption cost is reduced, and the utilization efficiency of the photovoltaic, wind power and other new energy power generation is maximized. The invention can improve the power generation utilization efficiency of the new energy power generation device to the maximum extent in the practical application environment, promote the spontaneous self-use of the new energy power generation, reduce the local consumption, reduce the electric energy waste and simultaneously reduce the power consumption cost of users. The peak and valley regulation function of the power grid is realized, and the electric energy of the power grid is reasonably utilized.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (13)
1. The energy control system for the microgrid region is characterized in that the microgrid region comprises one or more microgrid units, and each microgrid unit comprises a unit energy router and at least one of new energy power generation equipment, energy storage equipment and power utilization equipment; the micro-grid area is provided with an area energy router and is connected with a public power grid through the area energy router; the microgrid region is provided with a regional new energy power generation device and regional energy storage equipment which are shared by the microgrid units, and the regional new energy power generation device and the regional energy storage equipment are connected with the regional energy router; the regional energy router generates a control parameter Pc according to the peak-valley adjustment requirement of the public power grid and sends the control parameter Pc to the unit energy routers of each micro-grid unit for energy input and output control, so that balance control between the electricity utilization load requirement and new energy generation amount, the public power grid energy exchange and the energy storage equipment in the micro-grid regional energy control system is realized;
the regional energy router includes: the regional data analysis module is used for receiving the energy demand and supply information sent by the unit energy router, analyzing the supply-demand relationship, determining the real-time control parameter Pc by combining the peak-valley regulation demand of the public power grid, and sending the control parameter Pc to the unit energy router; wherein the control parameter Pc is used for representing the electricity price; the regional control processing module is used for determining and sending a discharging or charging control parameter and an instruction to regional energy storage equipment according to the comparison between the control parameter Pc and the peak-to-valley electricity price of the public power grid, and controlling the energy input and output of the public power grid;
and the region evaluation accounting module is used for receiving the real-time input energy and output energy quantity sent by each unit energy router, obtaining the energy input cost and energy output benefit of each micro-grid unit according to the control parameter Pc, counting and summarizing, and performing new energy power generation benefit evaluation and benefit evaluation of peak shifting with a public power grid.
2. The system of claim 1, wherein the microgrid region further has a regional common load device common to the plurality of microgrid elements.
3. The system of claim 2, wherein the cell energy router comprises:
the automatic unit adjusting module is used for controlling real-time energy power balance in the microgrid unit;
the unit data acquisition module is used for acquiring the real-time power generation amount Wg of the new energy power generation equipment, the real-time power consumption Wl of the power utilization equipment and the state information of the energy storage equipment, wherein the state information of the energy storage equipment comprises the real-time charging amount Wc, the real-time discharging amount Wd and the residual electric quantity SOC of the energy storage equipment;
the unit monitoring and metering module is used for analyzing the real-time energy demand or energy supply in the microgrid unit, metering the actual output energy or input energy of the unit energy router, and sending the energy to the regional energy router;
and the unit control processing module is used for comparing the received control parameter Pc sent by the regional energy router with an energy output expected parameter Ps or an energy input expected parameter Pb set by a user in the microgrid unit, sending a discharging or charging control parameter and command to the energy storage equipment according to the comparison result, and controlling the input and output of the energy of the unit energy router.
4. The system of claim 2 or 3, wherein the regional energy router comprises:
the automatic area adjusting module is used for controlling the real-time energy power balance of the micro-grid area;
the regional data acquisition module is used for acquiring the real-time power generation amount Wgq of the regional new energy power generation device, the real-time power consumption Wlq of the regional common load equipment and the state information of the regional energy storage equipment in real time, wherein the state information of the regional energy storage equipment comprises the real-time charging amount Wcq, the real-time discharging amount Wdq and the residual electric quantity SOCq of the regional energy storage equipment.
5. The system of claim 1, wherein the new energy generation device comprises one of: photovoltaic power generation equipment, wind power generation equipment and geothermal power generation equipment; the regional new energy power generation device comprises one of the following components: photovoltaic power generation device, wind power generation device, geothermal power generation device.
6. The method for controlling the unit energy router in the microgrid zone energy control system according to any one of claims 1 to 5, comprising:
gather the electric quantity parameter information of equipment in the microgrid unit, wherein, electric quantity parameter information includes: the system comprises a new energy device real-time generating capacity Wg, an electric device real-time power consumption Wl, an energy storage device real-time charging amount Wc or real-time discharging amount Wd and a residual electric quantity SOC;
receiving a control parameter Pc sent by a region energy router;
and controlling the energy input and output of the microgrid region according to the acquired electric quantity parameter information and the received control parameter Pc so as to realize the balance control between the electricity load demand and the new energy generated energy, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system.
7. The method of claim 6, before the acquiring the parameter information of the electric quantity of each device in the microgrid unit, further comprising: and responding to the triggered initialization setting operation, and completing the initial parameter setting of the microgrid unit, wherein the initial parameters comprise: the energy storage equipment reserves electric quantity Qy, the unit energy router energy output expected parameter Ps and the unit energy router energy input expected parameter Pb.
8. The method of claim 7, wherein the controlling the energy input and output of the microgrid region according to the collected electric quantity parameter information and the received control parameter Pc to realize balance control between the electric load demand and the new energy generation amount, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system comprises:
when Wg is larger than Wl, if SOC is larger than or equal to Qy, controlling to provide electricity Ws to the microgrid area as Wg-Wl;
when Wg is greater than Wl, if SOC is less than Qy, controlling charging Wc to the energy storage device as Wg-Wl; and if the charging power of the energy storage equipment reaches a rated value Wcmax after the energy storage equipment is charged, outputting energy Ws to the microgrid region, wherein the energy Ws is Wg-Wl-Wcmax, and transmitting the energy output quantity Ws to the region energy router.
9. The method of claim 7, wherein the controlling the energy input and output of the microgrid region according to the collected electric quantity parameter information and the received control parameter Pc to realize balance control between the electric load demand and the new energy generation amount, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system comprises:
when Wg is less than or equal to Wl, if SOC is greater than Qy, controlling the energy storage device to discharge Wd to be Wl-Wg, and judging whether the discharge capacity of the energy storage device is surplus or not through the following formula: wx is Wdmax + Wg-Wl, wherein Wdmax is the rated maximum real-time electric energy Wdmax output by the energy storage device, if Wx is larger than or equal to 0, the discharge capacity of the energy storage device is judged to be redundant, if the control parameter Pc is larger than or equal to Ps at the moment, the current output electric energy benefit is judged to be large, the energy Ws is controlled to be output to the microgrid region, if the control parameter Pc is smaller than Ps at the moment, the microgrid unit energy storage discharge is judged to only meet the load of the microgrid unit, and the electric energy is controlled not to be output to the microgrid region;
when Wg is less than or equal to Wl, if SOC is less than Qy and control parameter Pc is less than or equal to Pb, judging that the current input energy benefit is large, controlling the energy input from the regional energy router Wb to be Wl-Wg + Wc, meeting load power, simultaneously charging the energy storage equipment Wc, and sending energy demand Wb to the regional energy router;
when Wg is less than or equal to Wl, if SOC is less than Qy and the control parameter Pc is more than Pb, controlling the energy storage equipment to discharge Wd to Wl-Wg; and when the energy storage capacity of the energy storage equipment reaches a lower limit value, stopping the energy storage equipment from discharging, inputting electric energy Wb from the microgrid region as Wl-Wg, and sending the energy demand Wb to the region energy router.
10. A method for controlling the regional energy router in the microgrid regional energy control system according to any one of claims 1 to 5, comprising:
the method comprises the following steps of collecting electric quantity parameter information of equipment in a microgrid area, wherein the electric quantity parameter information comprises: the method comprises the following steps that the real-time power generation amount Wgq of a regional new energy power generation device, the real-time power consumption Wlq of regional public load equipment, the real-time charging amount Wcq or real-time discharging amount Wdq of regional energy storage equipment, residual power SOCq, the real-time price PWS of electricity sold to a public power grid by a microgrid region, and the real-time price PWB of electricity bought to the public power grid by the microgrid region are obtained;
receiving and summarizing output energy Ws and input energy Wb sent by each unit energy router, and determining energy supply WG and energy demand WX;
and controlling the energy input and output of the microgrid region according to the acquired electric quantity parameter information, the determined energy supply WG and the determined energy demand WX so as to realize the balance control between the electricity load demand and the new energy generated energy, the energy exchange of the public power grid and the energy storage equipment in the microgrid region energy control system.
11. The method of claim 10, further comprising, prior to the collecting information on the charge parameter of the device in the area of the microgrid: and responding to the triggered initialization setting operation, and completing the initial parameter setting of the microgrid area, wherein the initial parameters comprise: the area energy storage device reserves an electric quantity Qyq, uses the utility grid protocol peak power rates PWH and the trough power rates PWL and the corresponding time periods, and the initial values PJ of the control parameters Pc, PJ ═ PWH + PWL)/2.
12. The method of claim 11, wherein the controlling microgrid zone energy input and output according to the collected power parameter information and the determined energy supply WG and the determined energy demand WX to realize balance control between power consumption load demand and new energy generation capacity, power exchange of a utility grid and energy storage equipment in the microgrid zone energy control system comprises:
when WG > WX, determining a current control parameter Pc ═ ((WG-WX)/WG) × PJ and controlling a regional energy storage device to charge Wcq ═ WG-WX, when Wcq reaches energy storage device charging rated power Wcqmax, controlling a regional energy storage router to output energy Wsq ═ WG-WX-Wcqmax to a public grid, determining a current control parameter Pc ═ PWS and detecting the residual energy of the regional energy storage device, if the residual energy SOCq > of the regional energy storage device is Qyq, controlling the regional energy storage device to stop charging, and controlling the regional energy storage router to output energy Wsq ═ WG-WX to the public grid, and simultaneously determining the current control parameter: pc ═ PWS.
13. The method as claimed in claim 11 or 12, wherein the controlling microgrid area energy input and output according to the collected electric quantity parameter information and the determined energy supply WG and the determined energy demand WX to realize balance control between electric load demand and new energy generation amount, power exchange of a utility grid and energy storage equipment in the microgrid area energy control system comprises:
in WG<And WX, determining the current control parameters:
judging whether the current public power grid is at a valley electricity price, if the current public power grid is not at the valley electricity price, controlling the regional energy storage equipment to discharge Wdq to be WX-WG, when the regional energy storage equipment discharges to reach the discharge rated power Wdqmax, controlling the regional energy router to input energy Wbq from the public power grid to be WX-WG-Wdqmax, and adjusting a control parameter Pc to be PWB; if Wdq is less than the discharge rated power Wdqmax of the regional energy storage device, the residual charge SOCq of the regional energy storage device>Qyq, and when the current utility grid is at peak power price, the control area energy router outputs energy Wsq WG + Wdqmax-WX to the utility grid, the control area energy storage device discharges according to rated power Wdqmax, and the current system control parameter Pc is determined to be PWB;
when WG < WX, when the current utility grid is at the valley price, the regional energy router is controlled to input energy Wbq from the utility grid, WX-WG + Wcq, the regional energy storage device is charged Wcq, and the current system control parameter Pc is determined to be PWB.
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