CN110838719A

CN110838719A - Source network load and storage cooperation method and system

Info

Publication number: CN110838719A
Application number: CN201911184573.3A
Authority: CN
Inventors: 舒鹏; 胡泊; 熊新
Original assignee: State Grid E Commerce Co Ltd
Current assignee: State Grid Digital Technology Holdings Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-02-25
Anticipated expiration: 2039-11-27
Also published as: CN110838719B

Abstract

The application discloses a source network load storage cooperation method and a source network load storage cooperation system, which specifically comprise the following steps: and the network controller calculates the power coordination capability of the energy storage unit at the client side according to the current state parameter of the energy storage unit at the client side, and sends the power coordination capability of the energy storage unit at the client side to the coordination service system. The cooperative service system generates a cooperative response instruction corresponding to the client side energy storage unit according to a power cooperative target corresponding to a network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit, and sends the cooperative response instruction to the network controller. And when determining that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, the network controller adjusts the power of the client-side energy storage unit according to the power adjustment plan value of the client-side energy storage unit carried by the cooperative response instruction. Therefore, the realization difficulty that the energy storage unit at the client side participates in power grid peak shaving can be reduced, and the response efficiency is improved.

Description

Source network load and storage cooperation method and system

Technical Field

The application relates to the technical field of computers, in particular to a source network load-store cooperation method and system.

Background

With the development of clean energy (e.g., renewable energy), energy structures are gradually changing. However, with the aggravation of the grid regulation pressure, the intermittent power generation of the renewable energy source and the load peak-valley effect are also aggravated correspondingly, so that the grid peak regulation pressure is high and the scheduling work difficulty is improved.

However, how to effectively reduce the peak load regulation pressure of the power grid and the difficulty of the dispatching work still remains a technical problem to be solved urgently.

Disclosure of Invention

In order to solve the technical problems in the prior art, the application provides a source network load storage cooperation method and a source network load storage cooperation system, which can effectively reduce peak load regulation pressure of a power grid and scheduling work difficulty.

In order to achieve the above purpose, the technical solutions provided in the embodiments of the present application are as follows:

the embodiment of the application provides a source network load and store cooperative method, which is applied to a source network load and store cooperative system, wherein the source network load and store cooperative system comprises at least one network controller and a cooperative service system, and the method comprises the following steps:

the network controller calculates the power coordination capacity of the client side energy storage unit according to the current state parameter of the client side energy storage unit and sends the power coordination capacity of the client side energy storage unit to the coordination service system;

the cooperative service system generates a cooperative response instruction corresponding to the client side energy storage unit according to a power cooperative target corresponding to a network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit;

and the cooperative service system sends the cooperative response instruction to the network controller, so that the network controller adjusts the power of the client-side energy storage unit according to the power adjustment plan value of the client-side energy storage unit carried by the cooperative response instruction when determining that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price.

Optionally, the current state parameter includes: at least one of current charge-discharge power, preset charge-discharge settings, current state of charge, nameplate parameters, an attributive electric energy meter number and current inlet wire switch power.

Optionally, when the current state parameter includes: when current charge-discharge power, preset charge-discharge setting, current state of charge and current inlet wire switch power, the network controller calculates the power coordination capacity of the client side energy storage unit according to the current state parameters of the client side energy storage unit, and the method comprises the following steps:

when the network controller determines that the current charge state of the client side energy storage unit is within a preset interval, the network controller calculates the power coordination capacity of the client side energy storage unit according to the current charge-discharge power of the client side energy storage unit, the preset charge-discharge setting of the client side energy storage unit and the current incoming line switching power of the client side energy storage unit.

Optionally, when the power coordination capability includes a power up-regulation capability and a power down-regulation capability, and the preset charge-discharge setting includes a rated charge power and a rated discharge power, the network controller calculates the power coordination capability of the client-side energy storage unit according to the current charge-discharge power of the client-side energy storage unit, the preset charge-discharge setting of the client-side energy storage unit, and the current incoming line switching power of the client-side energy storage unit, including:

when the network controller determines that the client side energy storage unit is in a discharging state, the power up-regulation capability of the client side energy storage unit is obtained according to the sum of the current discharging power of the client side energy storage unit and the rated charging power of the client side energy storage unit, and the power down-regulation capability of the client side energy storage unit is obtained according to the difference value of the rated discharging power of the client side energy storage unit and the current discharging power of the client side energy storage unit;

when the network controller determines that the client side energy storage unit is in a charging state, the power up-regulation capability of the client side energy storage unit is obtained according to the difference value between the rated charging power of the client side energy storage unit and the current charging power of the client side energy storage unit, and the power down-regulation capability of the client side energy storage unit is obtained according to the sum of the current charging power of the client side energy storage unit and the rated discharging power of the client side energy storage unit;

and when the network controller determines that the client side energy storage unit is in a standby state, the power up-regulation capability of the client side energy storage unit is obtained according to the rated charging power of the client side energy storage unit, and the power down-regulation capability of the client side energy storage unit is obtained according to the rated discharging power of the client side energy storage unit.

Optionally, when determining that the current incoming line switching power of the client-side energy storage unit is smaller than the power down-regulation capability of the client-side energy storage unit, the network controller obtains the corrected power down-regulation capability of the client-side energy storage unit according to a product of the current incoming line switching power of the client-side energy storage unit and a first multiple;

and when the network controller determines that the difference value between the rated capacity of the transformer corresponding to the client side energy storage unit and the current incoming line switching power of the client side energy storage unit is smaller than the power down-regulation capacity of the client side energy storage unit, the network controller makes a difference between the rated capacity of the transformer corresponding to the client side energy storage unit and the current incoming line switching power of the client side energy storage unit to obtain a power difference value, and obtains the corrected power up-regulation capacity of the client side energy storage unit according to the product of the power difference value and the second multiple.

Optionally, the method further includes:

and the cooperative service system determines a network topology node where the client side energy storage unit is located according to the home electric energy meter number of the client side energy storage unit.

Optionally, the method further includes:

the cooperative service system determines a power adjustment actual value of the client side energy storage unit according to the actual incoming line power of the client side energy storage unit in the cooperative target time period carried by the cooperative response instruction;

and the cooperative service system determines the actual amount of the response income corresponding to the client side energy storage unit according to the actual power adjustment value of the client side energy storage unit and the planned power adjustment value of the client side energy storage unit.

The embodiment of the present application further provides a source network load and store coordination system, including: at least one network controller and a collaborative services system; wherein the content of the first and second substances,

the network controller is used for calculating the power coordination capability of the client side energy storage unit according to the current state parameter of the client side energy storage unit and sending the power coordination capability of the client side energy storage unit to the coordination service system;

the cooperative service system is used for generating a cooperative response instruction corresponding to the client side energy storage unit according to a power cooperative target corresponding to a network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit;

the cooperative service system is used for sending the cooperative response instruction to the network controller;

and the network controller is used for adjusting the power of the client side energy storage unit according to the power adjustment plan value of the client side energy storage unit carried by the cooperative response instruction when the subsidy electricity price carried by the cooperative response instruction is determined to exceed the market electricity price.

An embodiment of the present application further provides an apparatus, where the apparatus includes a processor and a memory:

the memory is used for storing a computer program;

the processor is configured to execute any implementation manner of the source network load and store cooperation method provided by the embodiment of the application according to the computer program.

The embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium is used for storing a computer program, and the computer program is used for executing any implementation manner of the source network load storage cooperation method provided in the embodiment of the present application.

Compared with the prior art, the embodiment of the application has at least the following advantages:

in the source network charge-storage coordination method provided by the embodiment of the application, first, the network controller calculates the power coordination capability of the client side energy storage unit according to the current state parameter of the client side energy storage unit, and sends the power coordination capability of the client side energy storage unit to the coordination service system. And then, the cooperative service system generates a cooperative response instruction corresponding to the client side energy storage unit according to a power cooperative target corresponding to a network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit, and sends the cooperative response instruction to the network controller. And finally, when the network controller determines that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, performing power adjustment on the client side energy storage unit according to the power adjustment plan value of the client side energy storage unit carried by the cooperative response instruction.

The energy storage units at the client sides of the source network load and storage cooperative system can participate in the source network load and storage cooperative process under the condition of surplus power of the energy storage units, so that the energy storage units at the client sides can share peak shaving pressure under the condition of surplus power of the energy storage units, and the peak shaving pressure of a power grid can be effectively reduced. In addition, the network controller controls the client-side energy storage unit to participate in the source network charge-storage cooperative process when determining that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, so that the client-side energy storage unit can obtain benefits each time the client-side energy storage unit participates in the source network charge-storage cooperative process, the enthusiasm of a user participating in the source network charge-storage cooperative process is improved, and the scheduling work difficulty can be reduced. In addition, the cooperative service system performs power cooperative distribution on the client side energy storage unit according to the power cooperative target corresponding to the network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit, so that the client side energy storage unit can participate in the source network charge and storage cooperative process on the premise of ensuring the safety of the client side energy storage unit equipment, and therefore, the enthusiasm of a user participating in the source network charge and storage cooperative process is favorably improved, and the scheduling work difficulty can be reduced. In addition, the network controller can actively provide the power coordination capability of the client side energy storage unit for the coordination service system, so that the coordination service system only needs to perform power coordination distribution according to the received power coordination capability of the client side energy storage unit, the coordination service system does not need to actively search the client side energy storage unit which can participate in the source network charge and storage coordination process, and the scheduling work difficulty can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic diagram of a source network load and store collaboration system provided in an embodiment of the present application;

fig. 2 is an exemplary diagram of a source network load and store collaboration system provided in an embodiment of the present application;

fig. 3 is an electrical topology diagram of a client-side energy storage unit according to an embodiment of the present application;

fig. 4 is a flowchart of a source-network load-store coordination method according to an embodiment of the present disclosure;

fig. 5 is a flowchart for calculating power coordination capability of a client-side energy storage unit according to an embodiment of the present application;

fig. 6 is an exemplary diagram for calculating power coordination capability of a client-side energy storage unit according to an embodiment of the present application;

fig. 7 is a flowchart of another implementation manner of a source network load and store cooperation method provided in an embodiment of the present application;

fig. 8 is a flowchart of another implementation manner of a source network load and store cooperation method provided in the embodiment of the present application;

fig. 9 is a flowchart of an implementation manner of S409 according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a source network load-store coordination system according to an embodiment of the present application.

Detailed Description

For the convenience of understanding and explaining the source network load-store coordination method provided by the embodiment of the present application, a few terms are introduced below.

Source network load and storage cooperative systemComprises at leastA network controller and a collaborative services system. The network controller is configured to send data information (for example, the data information may include state parameters and power coordination capability of the client side energy storage unit) to the coordination service system, receive an instruction sent by the coordination service system, and control the client side energy storage unit corresponding to the instruction. The cooperative service system is used for receiving data information sent by the network controller and sending instructions to the network controller. For example, the source network load-store cooperative system shown in fig. 1 includes N network controllers and 1 cooperative service system; furthermore, each network controller may control its corresponding client-side energy storage unit. Wherein N is a positive integer.

In the embodiments of the present application, the communication method between the network controller and the cooperative service system is not limited, and any conventional communication method (for example, wireless communication, wired communication, etc.) may be used; in addition, the embodiment of the application also does not limit the communication mode between the network controller and the client-side energy storage unit.

Customer side energy storage unitMay refer to an electrical system unit (as shown in fig. 2 and 3) composed of distributed power, load, and/or energy storage type energy facilities located at the client side, has a definite property boundary point with the power grid, and includes a network control system for managing the operation control of the electrical system unit. In addition, a property right demarcation point exists between each client side energy storage unit and the power grid inlet wire. (or units if there are multiple title boundaries), which are typically incoming electrical switches/breakers.

In addition, the access method of the client side energy storage unit can be divided into a composite type and an independent type. The composite client side energy storage unit (for example, a client side energy storage system containing energy storage in fig. 3) is connected to a client low-voltage side power supply system and operates in combination with a load and a distributed power supply. The independent client-side energy storage unit (e.g., "independent client-side energy storage system" in fig. 3) is connected to the client-side high-voltage side, and is not operated in conjunction with or selectively cooperated with the load or the distributed power supply. In addition, the composite type client side energy storage unit and the independent type client side energy storage unit can be used as a type of cooperative unit, and property right demarcation points exist between each cooperative unit and the power grid incoming line. (or units if there are multiple title boundaries), which are typically incoming electrical switches/breakers.

It should be noted that, as shown in fig. 3, if the upper-stage transformers connected to the client-side energy storage unit are the same, the client-side energy storage unit may be classified as an association unit. In addition, the associated client side energy storage units can act together and influence the operation trend of the upper-level transformer, so that a network distribution side source network energy storage cooperative unit can be formed (the network distribution side source network energy storage cooperative unit refers to an electric system unit formed by the upper-level transformer on the electric network side and the client side energy storage unit under the control of the upper-level transformer).

Power coordination capabilityThe method refers to the power regulation capability of the client side energy storage unit when the client side energy storage unit participates in the source network charge storage cooperative process.

The above is the basic knowledge of the source network load-store cooperation method provided by the embodiment of the application.

In order to solve the technical problems in the background art section, the inventors have studied and found that: the problem of power grid peak regulation can be solved by adopting a source grid load storage cooperation technology. The source network load storage cooperation can break through an energy vertical shaft and property boundaries, and associated equipment is enabled to perform energy control, energy transaction and information interaction based on a certain cooperation target; and the development of the cloud big thing moving intelligence technology (the cloud big thing moving intelligence technology comprises cloud computing, big data, the Internet of things, the mobile internet and artificial intelligence) creates a technical foundation for the cooperation between the source network load storage facilities. However, the source network load and store cooperation technology still has the following technical problems: (1) when the source network load storage cooperation technology faces an incremental project (park level), a source network load storage system needs to be directly planned, investment construction is unified, a top-level design is adopted, the period is long, realization is difficult, economic benefits cannot be reflected in a short period, and personalized requirements of enterprises are difficult to meet. (2) When the source network load-storage cooperation technology faces the stock, if the power grid issues a scheduling instruction and executes forcibly, normal energy use of a client is stopped due to the need of forced control, so that equipment in operation is easily damaged, a participating subject cannot obtain benefits, and the willingness of the participating subject is poor in the mode; if the power grid issues in a demand response mode, although the participation main body can obtain benefits in the mode, the power regulation period is long due to the fact that the period is long and needs to be developed in two weeks in advance, participation of the participants is not flexible enough, and the mode of registration reporting and response effect post-evaluation is generally adopted, so that the participation and the output are only adjusted for a plurality of times in one year, and the investment and the output are lower.

In order to solve the technical problems in the background art and the technical problems described above, an embodiment of the present application provides a source network load and store cooperation method applied to a source network load and store cooperation system, where the method includes: the network controller calculates the power coordination capability of the client side energy storage unit according to the current state parameter of the client side energy storage unit and sends the power coordination capability of the client side energy storage unit to the coordination service system; the cooperative service system generates a cooperative response instruction corresponding to the client side energy storage unit according to a power cooperative target corresponding to a network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit; and the cooperative service system sends the cooperative response instruction to the network controller, so that the network controller adjusts the power of the energy storage unit at the client side according to the power adjustment plan value of the energy storage unit at the client side carried by the cooperative response instruction when determining that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price.

The energy storage units at the client sides of the source network load and storage cooperative system can participate in the source network load and storage cooperative process under the condition of surplus power of the energy storage units, so that the energy storage units at the client sides can share peak shaving pressure under the condition of surplus power of the energy storage units, and the peak shaving pressure of a power grid can be effectively reduced. In addition, the network controller controls the client-side energy storage unit to participate in the source network charge-storage cooperative process when determining that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, so that the client-side energy storage unit can obtain benefits each time the client-side energy storage unit participates in the source network charge-storage cooperative process, the enthusiasm of a user participating in the source network charge-storage cooperative process is improved, and the scheduling work difficulty can be reduced. In addition, the cooperative service system performs power cooperative distribution on the client side energy storage unit according to the power cooperative target corresponding to the network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit, so that the client side energy storage unit can participate in the source network charge and storage cooperative process on the premise of ensuring the safety of the client side energy storage unit equipment, and therefore, the enthusiasm of a user participating in the source network charge and storage cooperative process is favorably improved, and the scheduling work difficulty can be reduced. In addition, the network controller can actively provide the power coordination capability of the client side energy storage unit for the coordination service system, so that the coordination service system only needs to perform power coordination distribution according to the received power coordination capability of the client side energy storage unit, the coordination service system does not need to actively search the client side energy storage unit which can participate in the source network charge and storage coordination process, and the scheduling work difficulty can be reduced. In addition, the source network load storage cooperation method provided by the embodiment of the application has a short period, and adverse effects caused by the long period are avoided, so that the power grid regulation capacity can be effectively improved, and the peak regulation pressure and the scheduling work difficulty of the power grid can be effectively reduced.

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Method embodiment one

Referring to fig. 4, the figure is a flowchart of a source-network load-store coordination method according to an embodiment of the present application.

The source network load-store cooperation method provided by the embodiment of the application is applied to a source network load-store cooperation system, and the method comprises S401-S405:

s401: and the network controller calculates the power coordination capability of the energy storage unit at the client side according to the current state parameter of the energy storage unit at the client side.

The current state parameters are used for representing equipment parameters and power operation state parameters of the energy storage unit at the client side at the current moment; furthermore, the current state parameter is not limited in the embodiments of the present application, for example, the current state parameter may include: at least one of current charge-discharge power, preset charge-discharge settings, current state of charge, nameplate parameters, an attributive electric energy meter number and current inlet wire switch power.

The meter number of the home electric energy meter is used for representing the position home information of the client side energy storage unit in the network topology node at the current time. In addition, the preset charge-discharge setting is used for representing the charge-discharge setting within a preset time period after the current moment; also, the preset charge and discharge setting may include at least one of a rated charge power and a rated discharge power.

It should be noted that the network controller may acquire the current status parameters of the energy storage unit on the client side in real time (e.g., at a speed of the order of seconds), so that the current status parameters may be acquired by the network controller. In addition, the embodiment of the present application does not limit the manner of taking the current state parameter.

Based on the above, in the embodiment of the application, after the network controller acquires the current state parameter of the client-side energy storage unit, the network controller may calculate the power coordination capability of the client-side energy storage unit according to the current state parameter of the client-side energy storage unit.

In addition, an embodiment of the present application further provides a specific implementation of calculating the power coordination capability of the client-side energy storage unit, in this implementation, as shown in fig. 5, the current state parameters include: when the current charge and discharge power, the preset charge and discharge setting, the current charge state and the current incoming line switch power are used, S401 may specifically include S4011-S4013:

s4011: the network controller judges whether the current state of charge in the current state parameters is within a preset interval, if so, S4012 is executed; if not, go to S4013.

The preset interval is preset, and particularly can be preset according to an application scene, so that the client side energy storage unit with the current charge state in the preset interval is suitable for participating in the secondary source network charge and storage coordination process. For example, the preset interval may be [ 30%, 90% ].

S4012: and the network controller calculates the power coordination capability of the energy storage unit at the client side according to the current charge-discharge power of the energy storage unit at the client side, the preset charge-discharge setting of the energy storage unit at the client side and the current incoming line switching power of the energy storage unit at the client side.

In the embodiment of the application, when it is determined that the current state of charge of the client-side energy storage unit is within the preset interval, the network controller determines that the client-side energy storage unit is suitable for participating in the secondary source network charge-storage coordination process, and at this time, the network controller can calculate the power coordination capacity of the client-side energy storage unit according to the current charge-discharge power of the client-side energy storage unit, the preset charge-discharge setting of the client-side energy storage unit and the current incoming line switching power of the client-side energy storage unit, so that the client-side energy storage unit can participate in the secondary source network charge-storage coordination process under the permission of the power coordination capacity of the client-side.

In addition, an embodiment of S4012 is further provided in this application, in this embodiment, S4012 may specifically include:

(1) when the network controller determines that the client side energy storage unit is in a discharging state, the power up-regulation capability of the client side energy storage unit is obtained according to the sum of the current discharging power of the client side energy storage unit and the rated charging power of the client side energy storage unit, and the power down-regulation capability of the client side energy storage unit is obtained according to the difference value of the rated discharging power of the client side energy storage unit and the current discharging power of the client side energy storage unit.

(2) When the network controller determines that the client side energy storage unit is in the charging state, the power up-regulation capability of the client side energy storage unit is obtained according to the difference value between the rated charging power of the client side energy storage unit and the current charging power of the client side energy storage unit, and the power down-regulation capability of the client side energy storage unit is obtained according to the sum of the current charging power of the client side energy storage unit and the rated discharging power of the client side energy storage unit.

(3) When the network controller determines that the client side energy storage unit is in a standby state, the power up-regulation capability of the client side energy storage unit is obtained according to the rated charging power of the client side energy storage unit, and the power down-regulation capability of the client side energy storage unit is obtained according to the rated discharging power of the client side energy storage unit.

In addition, some situations (e.g., the current incoming line switch power is less than the calculated power turn-down capability) may cause reverse power to be induced during the power turn-down of the client-side energy storage unit. At this time, in order to avoid the above situation, in the embodiment of the present application, the power down capability of the client-side energy storage unit may be further corrected, as shown in fig. 6, specifically, the power down capability may be: and when determining that the current incoming line switching power of the client side energy storage unit is smaller than the power down-regulation capacity of the client side energy storage unit, the network controller obtains the corrected power down-regulation capacity of the client side energy storage unit according to the product of the current incoming line switching power of the client side energy storage unit and the first multiple. The first multiple is preset, and can be set according to an application scene. For example, the first multiple may be 0.8.

In addition, some situations (for example, the difference between the rated capacity of the transformer and the current incoming line switching power is smaller than the calculated power down regulation capability) may cause the transformer overload to be caused in the process of power down regulation of the energy storage unit at the client side. At this time, in order to avoid the above situation, in the embodiment of the present application, the power up-regulation capability of the client-side energy storage unit may be further corrected, as shown in fig. 6, specifically, the power up-regulation capability may be: and when the network controller determines that the difference value between the rated capacity of the transformer corresponding to the client-side energy storage unit and the current incoming line switching power of the client-side energy storage unit is smaller than the power down-regulation capacity of the client-side energy storage unit, the rated capacity of the transformer corresponding to the client-side energy storage unit is differed from the current incoming line switching power of the client-side energy storage unit to obtain a power difference value, and the corrected power up-regulation capacity of the client-side energy storage unit is obtained according to the product of the power difference value and the second multiple. The second multiple is preset, and can be set according to application scenarios. For example, the second multiple may be 0.9.

S4013: and the network controller determines that the energy storage unit at the client side does not participate in the load and storage cooperative process of the secondary source network.

In the embodiment of the application, when it is determined that the current state of charge of the client-side energy storage unit is outside the preset interval, the network controller may determine that the client-side energy storage unit is not suitable for participating in the source network charge-storage cooperative process, and at this time, the network controller does not calculate the power cooperative capacity of the client-side energy storage unit, so that the client-side energy storage unit does not need to participate in the source network charge-storage cooperative process. Therefore, the self-operation safety of the energy storage unit at the client side can be effectively ensured.

The foregoing is a specific implementation of calculating the power coordination capability of the client-side energy storage unit according to the embodiment of the present application.

S402: and the network controller sends the power coordination capability of the energy storage unit at the client side to the coordination service system.

S403: and the cooperative service system generates a cooperative response instruction corresponding to the energy storage unit at the client side according to the power cooperative target corresponding to the network topology node where the energy storage unit at the client side is located and the power cooperative capability of the energy storage unit at the client side.

The network topology node where the client side energy storage unit is located is used for representing position attribution information of the client side energy storage unit in a network topology structure; moreover, the network topology node where the client side energy storage unit is located may be determined according to the home electric energy meter number of the client side energy storage unit, and the process may specifically be: and the cooperative service system determines the network topology node where the client side energy storage unit is located according to the meter number of the home electric energy meter of the client side energy storage unit.

It should be noted that, in the embodiment of the present application, a manner of obtaining, by the cooperative service system, the home electric energy meter number of the client side energy storage unit is not limited, for example, the cooperative service system may receive the home electric energy meter number of the client side energy storage unit sent by the network controller, and may also obtain the home electric energy meter number from a preset storage space.

It should be further noted that the network topology node may include at least one client-side energy storage unit, and the network topology node may perform power cooperative allocation according to the power cooperative capability of each client-side energy storage unit thereon, so as to enable the network topology node to complete the power cooperative target corresponding to the node as much as possible.

The power coordination target is used for representing power indexes distributed to network topology nodes in the load storage coordination process of the secondary source network.

The cooperative response instruction refers to an instruction sent to the network controller by the cooperative service system, and the cooperative response instruction may carry a power adjustment plan value, a subsidy electricity price, and a cooperative target time period of the energy storage unit on the client side. The power adjustment plan value of the client-side energy storage unit refers to a power adjustment target (i.e., active power (amplitude difference) is adjusted down or up) that the client-side energy storage unit should reach in a cooperative target time period when the client-side energy storage unit participates in the secondary grid load and storage cooperative process. The subsidy electricity price is an electricity price compensation value of the client side energy storage unit in the charge and storage coordination process of the secondary source network. The cooperative target time period refers to a duration of the client-side energy storage unit participating in the source network load and storage cooperative process, for example, the cooperative target time period may be within one hour after the current time.

Based on the above content, in the embodiment of the application, after the collaboration server obtains the power collaboration capability of the client side energy storage unit, the collaboration server may determine, according to the home electric energy meter number of the client side energy storage unit, a network topology node where the client side energy storage unit is located, by the collaboration server according to the collaboration service system; and generating a cooperative response instruction corresponding to the client side energy storage unit according to the power cooperative target corresponding to the network topology node and the power cooperative capability of the client side energy storage unit. The cooperative response instruction is generated according to the power cooperative target corresponding to the network topology node where the client side energy storage unit is located and the power cooperative capacity of the client side energy storage unit, so that the client side energy storage unit adjusted according to the power adjustment plan value can participate in the source network charge and storage cooperative process in advance without influencing the electric energy use of the client side energy storage unit.

S404: and the cooperative service system sends the cooperative response instruction to the network controller.

S405: and when determining that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, the network controller adjusts the power of the client-side energy storage unit according to the power adjustment plan value of the client-side energy storage unit carried by the cooperative response instruction.

The market price of electricity refers to the price of electricity recorded on the power grid sales catalog.

In the embodiment of the application, after the network controller receives the cooperative response instruction, the network controller can judge whether the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price. When it is determined that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, the network controller may determine that the energy storage unit on the client side can obtain the profit in the process of participating in the source network charge storage cooperation, and at this time, the network controller may perform power adjustment on the energy storage unit on the client side according to the power adjustment plan value of the energy storage unit on the client side carried by the cooperative response instruction. In addition, when it is determined that the subsidy electricity price carried by the cooperative response instruction does not exceed the market electricity price, the network controller may determine that the client-side energy storage unit cannot obtain the profit in participating in the source network charge-storage cooperative process, and at this time, the network controller determines that the client-side energy storage unit does not participate in the source network charge-storage cooperative process, so that the power control is not performed on the client-side energy storage unit. Therefore, the client side energy storage unit can obtain benefits in the source network charge and storage cooperative process participating in each time, and the enthusiasm of a user participating in the source network charge and storage cooperative process is improved.

It should be noted that the embodiment of the present application is not limited to the specific implementation of the network controller to perform power adjustment on the client-side energy storage unit, and any existing implementation or future implementation may be adopted.

In this embodiment, first, the network controller calculates the power coordination capability of the energy storage unit at the client side according to the current state parameter of the energy storage unit at the client side, and sends the power coordination capability of the energy storage unit at the client side to the coordination service system. And then, the cooperative service system generates a cooperative response instruction corresponding to the client side energy storage unit according to a power cooperative target corresponding to a network topology node where the client side energy storage unit is located and the power cooperative capability of the client side energy storage unit, and sends the cooperative response instruction to the network controller. And finally, when the network controller determines that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, performing power adjustment on the client side energy storage unit according to the power adjustment plan value of the client side energy storage unit carried by the cooperative response instruction.

Method embodiment two

In addition, an embodiment of the present application further provides another implementation of the source network load and store cooperation method, and as shown in fig. 7, in this implementation, the source network load and store cooperation method further includes, in addition to the above steps, S407:

s407: and the cooperative service system determines the network topology node where the client side energy storage unit is located according to the meter number of the home electric energy meter of the client side energy storage unit.

In this embodiment, the cooperative service system may determine a network topology node where the client-side energy storage unit is located according to a home electric energy meter number of the client-side energy storage unit, so that a subsequent cooperative service system may generate a cooperative response instruction corresponding to the client-side energy storage unit according to a power cooperative target corresponding to the network topology node where the client-side energy storage unit is located and the power cooperative capability of the client-side energy storage unit.

It should be noted that the embodiment of the present application does not limit the specific execution time of S407, and S407 only needs to be completed before S403 is executed.

In addition, an embodiment of the present application further provides another implementation manner of the source network load and store cooperation method, as shown in fig. 8, in this implementation manner, the source network load and store cooperation method further includes, in addition to the above steps, S408-S409:

s408: and the cooperative service system determines the power adjustment actual value of the energy storage unit at the client side according to the actual incoming line power of the energy storage unit at the client side in the cooperative target time period carried by the cooperative response instruction.

The power adjustment actual value is used for representing the actual power adjustment strength of the client side energy storage unit in the process of participating in the source network charge and storage cooperation; moreover, the actual power adjustment value is not limited in the embodiment of the present application, for example, the actual power adjustment value may be an actual average power adjustment value of the client side energy storage unit in the process of participating in the source grid load storage coordination, that is, an actual average power adjustment value of the client side energy storage unit in the coordination target time period.

In this embodiment of the application, after the energy storage unit on the client side completes the source network charge and storage cooperative work this time, the cooperative service system may determine the power adjustment actual value of the energy storage unit on the client side according to the actual incoming line power of the energy storage unit on the client side in the cooperative target time period (that is, according to the actual incoming line power of the energy storage unit on the client side in the source network charge and storage cooperative process this time), so that the subsequent cooperative service system may determine the response income actual amount corresponding to the energy storage unit on the client side based on the power adjustment actual value.

S409: and the cooperative service system determines the actual amount of the response income corresponding to the client side energy storage unit according to the actual power adjustment value of the client side energy storage unit and the planned power adjustment value of the client side energy storage unit.

In the embodiment of the application, after the cooperative service system obtains the power adjustment actual value of the client-side energy storage unit, the actual amount of the response income corresponding to the client-side energy storage unit can be determined according to the power adjustment actual value of the client-side energy storage unit and the power adjustment planned value of the client-side energy storage unit. It should be noted that the embodiment of the present application is not limited to the specific implementation of S409, for example, the actual amount of the response income may be determined according to a preset rule, or the actual amount of the response income may be determined according to a mapping relationship (for example, a mapping table) between the power adjustment value and the income amount.

As an embodiment, as shown in fig. 9, S409 may specifically include S4091 to S4093:

s4091: the cooperative service system judges whether the actual power adjustment value of the client side energy storage unit reaches a preset multiple of the planned power adjustment value of the client side energy storage unit; if yes, executing S4092; if not, S4093 is executed.

The preset multiple can be preset, and especially can be set according to an application scene. For example, the preset multiple may be 0.9.

S4092: and the cooperative service system determines the planned amount of the response income of the energy storage unit at the client side as the actual amount of the response income corresponding to the energy storage unit at the client side.

S4093: and the cooperative service system determines the actual amount of the response income corresponding to the energy storage unit at the client side according to the planned amount of the response income of the energy storage unit at the client side and the reduction ratio of the target amount of the response income.

The target amount reduction ratio may be preset, and may be set according to an application scenario.

In the embodiment of the application, the cooperative service system determines that the actual power adjustment value of the energy storage unit at the client side does not reach the preset multiple of the planned power adjustment value of the energy storage unit at the client side, and the actual response income amount corresponding to the energy storage unit at the client side can be determined according to the product of the planned response income amount of the energy storage unit at the client side and the reduction ratio of the target amount.

In this embodiment, after the cooperative service system obtains the power adjustment actual value of the client-side energy storage unit, the cooperative service system may first determine whether the power adjustment actual value of the client-side energy storage unit reaches a preset multiple of the power adjustment planned value of the client-side energy storage unit, so that when it is determined that the power adjustment actual value of the client-side energy storage unit reaches the preset multiple of the power adjustment planned value of the client-side energy storage unit, the response income plan amount of the client-side energy storage unit is determined as the response income actual amount corresponding to the client-side energy storage unit; or when the actual value of the power adjustment of the energy storage unit at the client side is determined not to reach the preset multiple of the planned value of the power adjustment of the energy storage unit at the client side, the actual amount of the response income corresponding to the energy storage unit at the client side is determined according to the planned amount of the response income of the energy storage unit at the client side and the reduction ratio of the target amount.

In another embodiment of the source network charge-storage coordination method provided in this embodiment of the present application, after the implementation, the coordination service system may determine the power adjustment actual value of the client-side energy storage unit according to the actual incoming line power of the client-side energy storage unit in the coordination target time period carried by the coordination response instruction, so that the coordination service system may determine the actual amount of response income corresponding to the client-side energy storage unit according to the power adjustment actual value of the client-side energy storage unit and the power adjustment plan value of the client-side energy storage unit, so that the subsequent user corresponding to the client-side energy storage unit can be paid based on the actual amount of response income corresponding to the client-side energy storage unit. Therefore, the automatic determination of the income amount of the client side energy storage unit participating in the source network charge-storage cooperative process is realized, manual settlement is not needed, and the comprehension and automation of the source network charge-storage cooperative process are improved.

Based on the specific implementation of the source network load-store coordination method provided by the foregoing method embodiment, an embodiment of the present application further provides a source network load-store coordination system, which is described below with reference to fig. 10.

System embodiment

Please refer to the above method embodiment for technical details of the source network load and store coordination system provided by the system embodiment.

Referring to fig. 10, the figure is a schematic structural diagram of a source grid load-store coordination system provided in the embodiment of the present application.

The source network load storage cooperative system 1000 provided by the embodiment of the present application includes at least one network controller 1001 and a cooperative service system 1002; wherein the content of the first and second substances,

the network controller 1001 is configured to calculate a power coordination capability of a client side energy storage unit according to a current state parameter of the client side energy storage unit, and send the power coordination capability of the client side energy storage unit to the coordination service system 1002;

the cooperative service system 1002 is configured to generate a cooperative response instruction corresponding to the client-side energy storage unit according to a power cooperative target corresponding to a network topology node where the client-side energy storage unit is located and the power cooperative capability of the client-side energy storage unit;

the cooperative service system 1002 is configured to send the cooperative response instruction to the network controller 1001;

and the network controller 1001 is configured to, when it is determined that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, perform power adjustment on the client-side energy storage unit according to the power adjustment plan value of the client-side energy storage unit carried by the cooperative response instruction.

As an embodiment, in order to effectively reduce the peak load regulation pressure of the power grid and the difficulty of scheduling work, the current state parameters include: at least one of current charge-discharge power, preset charge-discharge settings, current state of charge, nameplate parameters, an attributive electric energy meter number and current inlet wire switch power.

As an embodiment, in order to effectively reduce the peak load regulation pressure of the power grid and the difficulty of scheduling work, when the current state parameters include: at the current charge-discharge power, the preset charge-discharge setting, the current state of charge and the current inlet switch power,

when the network controller 1001 determines that the current state of charge of the client-side energy storage unit is within a preset interval, the network controller 1001 calculates the power coordination capability of the client-side energy storage unit according to the current charge-discharge power of the client-side energy storage unit, the preset charge-discharge setting of the client-side energy storage unit and the current incoming line switching power of the client-side energy storage unit.

As an embodiment, in order to effectively reduce the peak load regulation pressure of the power grid and the scheduling work difficulty, when the power coordination capability includes a power up-regulation capability and a power down-regulation capability, the preset charging and discharging settings include a rated charging power and a rated discharging power,

when the network controller 1001 determines that the client-side energy storage unit is in a discharging state, the network controller obtains the power up-regulation capability of the client-side energy storage unit according to the sum of the current discharging power of the client-side energy storage unit and the rated charging power of the client-side energy storage unit, and obtains the power down-regulation capability of the client-side energy storage unit according to the difference between the rated discharging power of the client-side energy storage unit and the current discharging power of the client-side energy storage unit;

when determining that the client-side energy storage unit is in a charging state, the network controller 1001 obtains the power up-regulation capability of the client-side energy storage unit according to a difference value between the rated charging power of the client-side energy storage unit and the current charging power of the client-side energy storage unit, and obtains the power down-regulation capability of the client-side energy storage unit according to the sum of the current charging power of the client-side energy storage unit and the rated discharging power of the client-side energy storage unit;

when determining that the client-side energy storage unit is in a standby state, the network controller 1001 obtains the power up-regulation capability of the client-side energy storage unit according to the rated charging power of the client-side energy storage unit, and obtains the power down-regulation capability of the client-side energy storage unit according to the rated discharging power of the client-side energy storage unit.

As an implementation manner, in order to effectively reduce peak shaving pressure and scheduling difficulty of a power grid, when determining that the current incoming line switching power of the client-side energy storage unit is smaller than the power down-regulation capability of the client-side energy storage unit, the network controller 1001 obtains the corrected power down-regulation capability of the client-side energy storage unit according to a product of the current incoming line switching power of the client-side energy storage unit and a first multiple;

when the network controller 1001 determines that the difference between the rated capacity of the transformer corresponding to the client-side energy storage unit and the current incoming line switching power of the client-side energy storage unit is smaller than the power down-regulation capability of the client-side energy storage unit, the rated capacity of the transformer corresponding to the client-side energy storage unit is differentiated from the current incoming line switching power of the client-side energy storage unit to obtain a power difference, and the corrected power up-regulation capability of the client-side energy storage unit is obtained according to the product of the power difference and the second multiple.

As an implementation manner, in order to effectively reduce peak load regulation pressure of a power grid and scheduling difficulty, the cooperative service system 1002 determines a network topology node where the client-side energy storage unit is located according to a home electric energy meter number of the client-side energy storage unit.

As an implementation manner, in order to effectively reduce peak shaving pressure of a power grid and scheduling difficulty, the cooperative service system 1002 determines a power adjustment actual value of the client-side energy storage unit according to actual incoming line power of the client-side energy storage unit in a cooperative target time period carried by the cooperative response instruction;

the cooperative service system 1002 determines the actual amount of the response income corresponding to the energy storage unit at the client side according to the actual value of the power adjustment of the energy storage unit at the client side and the planned value of the power adjustment of the energy storage unit at the client side.

In the above specific implementation of the source network charge-storage cooperative system 1000 provided in this embodiment of the present application, first, the network controller 1001 calculates the power cooperative capability of the client side energy storage unit according to the current state parameter of the client side energy storage unit, and sends the power cooperative capability of the client side energy storage unit to the cooperative service system 1002. Then, the cooperative service system 1002 generates a cooperative response instruction corresponding to the client-side energy storage unit according to the power cooperative target corresponding to the network topology node where the client-side energy storage unit is located and the power cooperative capability of the client-side energy storage unit, and sends the cooperative response instruction to the network controller 1001. Finally, when determining that the subsidy electricity price carried by the cooperative response instruction exceeds the market electricity price, the network controller 1001 adjusts the power of the client-side energy storage unit according to the power adjustment plan value of the client-side energy storage unit carried by the cooperative response instruction.

The energy storage units at the client sides of the source network load and storage cooperative system can participate in the source network load and storage cooperative process under the condition of surplus power of the energy storage units, so that the energy storage units at the client sides can share peak shaving pressure under the condition of surplus power of the energy storage units, and the peak shaving pressure of a power grid can be effectively reduced. In addition, the network controller 1001 controls the client-side energy storage unit to participate in the source network charge-storage coordination process when determining that the subsidy electricity price carried by the coordination response instruction exceeds the market electricity price, so that the client-side energy storage unit can obtain a benefit each time the client-side energy storage unit participates in the source network charge-storage coordination process, and the method is favorable for improving the enthusiasm of the user for participating in the source network charge-storage coordination process, and can reduce the scheduling work difficulty. In addition, the cooperative service system 1002 performs power cooperative distribution on the client-side energy storage unit according to the power cooperative target corresponding to the network topology node where the client-side energy storage unit is located and the power cooperative capability of the client-side energy storage unit, so that the client-side energy storage unit can participate in the source network charge-storage cooperative process on the premise of ensuring the safety of the client-side energy storage unit device, which is beneficial to improving the enthusiasm of the user in the source network charge-storage cooperative process, and thus the scheduling work difficulty can be reduced. In addition, since the network controller 1001 can actively provide the power coordination capability of the client-side energy storage unit to the coordination service system 1002, the coordination service system 1002 only needs to perform power coordination distribution according to the received power coordination capability of the client-side energy storage unit, and the coordination service system 1002 does not need to actively search the client-side energy storage unit which can participate in the source network charge-storage coordination process, so that the scheduling difficulty can be reduced. In addition, the source network load storage cooperation method provided by the embodiment of the application has a short period, and adverse effects caused by the long period are avoided, so that the power grid regulation capacity can be effectively improved, and the peak regulation pressure and the scheduling work difficulty of the power grid can be effectively reduced.

In addition, an embodiment of the present application further provides an apparatus, where the apparatus includes a processor and a memory:

the memory is used for storing a computer program;

the processor is configured to execute any implementation of the source network load and store coordination method provided by the foregoing method embodiment according to the computer program, and may specifically be configured to execute the following steps:

Optionally, the method further includes:

In addition, an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, where the computer program is used to execute any implementation of the source network load and store collaboration method provided by the foregoing method embodiment, and may specifically be used to execute the following steps:

Optionally, the method further includes:

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. A source network load-store cooperative method is applied to a source network load-store cooperative system, wherein the source network load-store cooperative system comprises at least one network controller and a cooperative service system, and the method comprises the following steps:

2. The method of claim 1, wherein the current state parameters comprise: at least one of current charge-discharge power, preset charge-discharge settings, current state of charge, nameplate parameters, an attributive electric energy meter number and current inlet wire switch power.

3. The method of claim 2, wherein when the current state parameters include: when current charge-discharge power, preset charge-discharge setting, current state of charge and current inlet wire switch power, the network controller calculates the power coordination capacity of the client side energy storage unit according to the current state parameters of the client side energy storage unit, and the method comprises the following steps:

4. The method of claim 3, wherein when the power coordination capability comprises a power up-regulation capability and a power down-regulation capability, and the preset charging and discharging settings comprise a rated charging power and a rated discharging power, the network controller calculates the power coordination capability of the client-side energy storage unit according to the current charging and discharging power of the client-side energy storage unit, the preset charging and discharging settings of the client-side energy storage unit, and the current incoming line switching power of the client-side energy storage unit, and comprises:

5. The method according to claim 4, wherein the network controller obtains the corrected power down capability of the energy storage unit at the client side according to a product of the current incoming line switching power of the energy storage unit at the client side and a first multiple when determining that the current incoming line switching power of the energy storage unit at the client side is smaller than the power down capability of the energy storage unit at the client side;

6. The method of claim 1, further comprising:

7. The method of claim 1, further comprising:

8. A source-grid load-store collaboration system, comprising: at least one network controller and a collaborative services system; wherein the content of the first and second substances,

9. An apparatus, comprising a processor and a memory:

the memory is used for storing a computer program;

the processor is configured to perform the method of any one of claims 1-7 in accordance with the computer program.

10. A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program for performing the method of any of claims 1-7.