CN-121984042-A - Energy storage configuration method, energy storage system, source network charge storage system and related devices

CN121984042ACN 121984042 ACN121984042 ACN 121984042ACN-121984042-A

Abstract

The application discloses an energy storage configuration method, an energy storage system, a source network charge storage system and related devices, and relates to the technical field of energy storage, comprising the following steps: the method comprises the steps of obtaining operation data of a source network load storage system, determining initial rated energy storage power and initial rated energy storage capacity which can enable the power rejection rate of the system to be not larger than a power rejection rate threshold under the constraint of power conditions of a grid connection point, inputting the initial rated energy storage power, the initial rated energy storage capacity and the operation data into an economic dispatch model to obtain target rated energy storage power and target rated energy storage capacity, and carrying out energy storage configuration based on the target rated energy storage power and the target rated energy storage capacity by taking maximum net income as an objective function by the economic dispatch model.

Inventors

HUANG CHANGXIANG
HE LIU
XU HUI
XU CHENGJI
ZHENG RAN
DONG CHEN

Assignees

阳光电源(南京)有限公司

Dates

Publication Date: 20260505
Application Date: 20241031

Claims (15)

1. A method of energy storage configuration, the method comprising: Acquiring operation data of a source network charge storage system, wherein the operation data comprise power generation values of a new energy power generation system and power consumption values of a load system at a plurality of moments; Obtaining initial rated energy storage power and initial rated energy storage capacity of an energy storage system according to the operation data and a pre-constructed energy storage operation scheduling model; the energy storage operation scheduling model is constructed according to the power balance condition of the source network charge storage system and the energy storage constraint condition of the energy storage system, wherein the energy storage constraint condition comprises an energy storage power condition and an energy storage capacity condition, the power condition at the point of connection is a maximum power value which can be born by a transformer device arranged at the point of connection, and the power value at the point of connection is not more than a preset power rejection rate threshold; Inputting the initial rated energy storage power, the initial rated energy storage capacity and the operation data into a pre-constructed economic dispatch model to obtain target rated energy storage power and target rated energy storage capacity of the energy storage system, wherein an objective function of the economic dispatch model is to maximize a net benefit value of the source network charge storage system, constraint conditions of the economic dispatch model are constraint conditions on cost of the source network charge storage system, the cost is related to the rated energy storage power and the rated energy storage capacity of the energy storage system, and the net benefit value is a difference value between a total benefit value and a total cost value of the source network charge storage system.
2. The energy storage configuration method according to claim 1, wherein obtaining an initial rated energy storage power and an initial rated energy storage capacity of the energy storage system according to the operation data and a pre-built energy storage operation scheduling model comprises: determining a first rated energy storage power according to the operation data, wherein the first rated energy storage power is the rated energy storage power required by the source network charge storage system at each moment to meet the power condition at the grid connection point and the power balance condition under the condition of not discarding electricity; configuring the energy storage system according to the first rated energy storage power and a first rated energy storage capacity corresponding to the first rated energy storage power; If the power rejection rate of the source network charge storage system containing the configured energy storage system in the operation time periods corresponding to the moments is not greater than the power rejection rate threshold, determining the initial rated energy storage power and the initial rated energy storage capacity based on the rated energy storage power and the rated energy storage capacity which are currently configured to the energy storage system; The power rejection rate is calculated based on the operation data and the energy storage operation data, and the energy storage operation data is determined by the energy storage operation scheduling model through the operation data and rated energy storage power and rated energy storage capacity configured to the energy storage system.
3. The energy storage configuration method of claim 2, wherein determining the initial rated energy storage power and the initial rated energy storage capacity based on the rated energy storage power and rated energy storage capacity currently configured to the energy storage system comprises: and determining the rated energy storage power currently configured to the energy storage system as the initial rated energy storage power and determining the rated energy storage capacity currently configured to the energy storage system as the initial rated energy storage capacity.
4. The energy storage configuration method of claim 3, wherein obtaining an initial rated energy storage power and an initial rated energy storage capacity of the energy storage system according to the operation data and a pre-built energy storage operation scheduling model, further comprises: And if the power rejection rate of the source network charge storage system containing the configured energy storage system in the operation period is larger than the power rejection rate threshold, increasing the values of the first rated energy storage power and the first rated energy storage capacity, and executing the configuration of the energy storage system according to the first rated energy storage power and the first rated energy storage capacity corresponding to the first rated energy storage power based on the increased first rated energy storage power and the increased first rated energy storage capacity.
5. The energy storage configuration method of claim 2, wherein determining the initial rated energy storage power and the initial rated energy storage capacity based on the rated energy storage power and rated energy storage capacity currently configured to the energy storage system comprises: And under the condition that the power rejection rate of the source network charge storage system containing the configured energy storage system in the operation period is equal to the power rejection rate threshold value, determining that the rated energy storage power currently configured to the energy storage system is the initial rated energy storage power and determining that the rated energy storage capacity currently configured to the energy storage system is the initial rated energy storage capacity.
6. The energy storage configuration method according to claim 5, wherein the initial rated energy storage power and the initial rated energy storage capacity of the energy storage system are obtained according to the operation data of the source network charge storage system and a pre-built energy storage operation scheduling model, further comprising: Recording rated energy storage power and rated energy storage capacity currently configured to the energy storage system as alternative parameters under the condition that the power rejection rate of the source network charge storage system containing the configured energy storage system in the operation period is smaller than the power rejection rate threshold; reducing the values of the first rated energy storage power and the first rated energy storage capacity, and performing configuration of the energy storage system according to the first rated energy storage power and a first rated energy storage capacity corresponding to the first rated energy storage power based on the reduced first rated energy storage power and the reduced first rated energy storage capacity; If the power rejection rate of the source network charge storage system containing the configured energy storage system in the operation period is larger than the power rejection rate threshold, determining that the rated energy storage power in the alternative parameter is the initial rated energy storage power and the rated energy storage capacity in the alternative parameter is the initial rated energy storage capacity under the condition that the alternative parameter exists, increasing the values of the first rated energy storage power and the first rated energy storage capacity under the condition that the alternative parameter does not exist, and executing the configuration of the energy storage system according to the first rated energy storage power and the first rated energy storage capacity corresponding to the first rated energy storage power based on the increased first rated energy storage power and the increased first rated energy storage capacity.
7. The energy storage configuration method according to any one of claims 2 to 6, wherein a power rejection rate of the source network charge storage system in the operation period is a ratio of a power rejection amount in the operation period to a total power generation amount in the operation period; the power discarding amount comprises power discarding amount caused by the power condition at the grid-connected point, and power discarding amount also comprises power discarding amount caused by the internet surfing power constraint condition of the source grid charge storage system.
8. The energy storage configuration method of any of claims 2-6, wherein determining a first rated energy storage power from the operational data comprises: according to the operation data, calculating charge and discharge power values required by the power network charge storage system at each moment to meet the power condition at the grid connection point and the power balance condition under the condition of not discarding electricity; and if the calculated value of the charge and discharge power is not zero, determining that the value of the charge and discharge power is the first rated energy storage power, otherwise, determining the first rated energy storage power based on the installed power of the new energy power generation system.
9. The energy storage configuration method according to any one of claims 2 to 6, wherein the first rated energy storage capacity corresponding to the first rated energy storage power is a rated energy storage capacity corresponding to the first rated energy storage power determined according to a preset correspondence between rated energy storage power and rated energy storage capacity.
10. The method of any one of claims 1-6, wherein the energy storage constraint condition further includes a remaining power condition, the remaining power condition being a rated energy storage capacity with an energy storage capacity value not less than β 1 times and a rated energy storage capacity with an energy storage capacity value not greater than β 2 times, wherein 0< β 1 ＜β 2 <1.
11. An energy storage configuration device, the device comprising: The system comprises an operation data acquisition unit, a load system and a load system, wherein the operation data acquisition unit is used for acquiring operation data of the source network load storage system, and the operation data comprises power generation values of the new energy power generation system and load power consumption values of the load system at a plurality of moments; The energy storage operation scheduling unit is used for obtaining initial rated energy storage power and initial rated energy storage capacity of the energy storage system according to the operation data and a pre-constructed energy storage operation scheduling model; the energy storage operation scheduling model is constructed according to the power balance condition of the source network charge storage system and the energy storage constraint condition of the energy storage system, wherein the energy storage constraint condition comprises an energy storage power condition and an energy storage capacity condition, the power condition at the point of connection is a maximum power value which can be born by a transformer device arranged at the point of connection, and the power value at the point of connection is not more than a preset power rejection rate threshold; the energy storage parameter determining unit is used for inputting the first rated energy storage power, the first rated energy storage capacity and the operation data into a pre-built economic dispatch model to obtain target rated energy storage power and target rated energy storage capacity of the energy storage system, wherein an objective function of the economic dispatch model is a net benefit value for maximizing the source network charge storage system, the constraint condition of the economic dispatch model is a constraint condition on the cost of the source network charge storage system, the cost is related to the rated energy storage power and the rated energy storage capacity of the energy storage system, and the net benefit value is a difference value between a total benefit value and a total cost value of the source network charge storage system.
12. A power storage configuration device comprising at least one processor and a memory coupled to the processor, wherein: The memory is used for storing a computer program; the processor is configured to execute the computer program to enable the energy storage configuration device to implement the energy storage configuration method of any one of claims 1 to 10.
13. A computer program product comprising computer readable instructions which, when run on an electronic device, enable the electronic device to implement the energy storage configuration method of any one of claims 1 to 10.
14. An energy storage system characterized in that the rated energy storage power and rated energy storage capacity of the energy storage system are configured according to the energy storage configuration method of any one of claims 1 to 10.
15. A source network charge storage system comprising the energy storage system of claim 14.

Description

Energy storage configuration method, energy storage system, source network charge storage system and related devices Technical Field The present application relates to the field of energy storage technologies, and in particular, to an energy storage configuration method, an energy storage system, a source network load storage system, and related devices. Background In order to cope with climate change and achieve the goals of carbon peak and carbon neutralization, the energy structure transformation needs to be advanced, and the new energy power generation technology is greatly developed. With the increase of the installed capacity of the new energy, the generated energy of the new energy is higher and higher, and the problem of the consumption of the generated energy of the new energy brings new challenges to the running stability and safety of the power grid. In order to solve the problem of new energy consumption and the structural transformation of propulsion energy, an operation mode of an electric power system integrating a power supply, a power grid, a load and energy storage is provided, and the operation mode is called a source network charge storage system. The energy storage system is used as an important component of the source network charge storage system, and the rated energy storage power and the rated energy storage capacity of the energy storage system are critical to solving the problem of new energy consumption and ensuring the stable operation of the power system. Therefore, how to configure the rated energy storage power and rated energy storage capacity of the energy storage system is a technical problem that needs to be solved by those skilled in the art. Disclosure of Invention In view of the above problems, the application provides an energy storage configuration method, an energy storage system, a source network charge storage system and related devices, so as to solve the problem of new energy consumption and provide a foundation for ensuring the stable operation of an electric power system. The specific scheme is as follows: the first aspect of the present application provides an energy storage configuration method, including: Acquiring operation data of a source network charge storage system, wherein the operation data comprise power generation values of a new energy power generation system and power consumption values of a load system at a plurality of moments; Obtaining initial rated energy storage power and initial rated energy storage capacity of an energy storage system according to the operation data and a pre-constructed energy storage operation scheduling model; the energy storage operation scheduling model is constructed according to the power balance condition of the source network charge storage system and the energy storage constraint condition of the energy storage system, wherein the energy storage constraint condition comprises an energy storage power condition and an energy storage capacity condition, the power condition at the point of connection is a maximum power value which can be born by a transformer device arranged at the point of connection, and the power value at the point of connection is not more than a preset power rejection rate threshold; And inputting the first rated energy storage power, the first rated energy storage capacity and the operation data into a pre-built economic dispatch model to obtain target rated energy storage power and target rated energy storage capacity of the energy storage system, wherein an objective function of the economic dispatch model is a net benefit value for maximizing the source network charge storage system, the constraint condition of the economic dispatch model is a constraint condition on the cost of the source network charge storage system, the cost is related to the rated energy storage power and the rated energy storage capacity of the energy storage system, and the net benefit value is a difference value between a total benefit value and a total cost value of the source network charge storage system. A second aspect of the present application provides an energy storage configuration apparatus, comprising: The system comprises an operation data acquisition unit, a load system and a load system, wherein the operation data acquisition unit is used for acquiring operation data of the source network load storage system, and the operation data comprises power generation values of the new energy power generation system and load power consumption values of the load system at a plurality of moments; The energy storage operation scheduling unit is used for obtaining initial rated energy storage power and initial rated energy storage capacity of the energy storage system according to the operation data and a pre-constructed energy storage operation scheduling model; the energy storage operation scheduling model is constructed according to the power balance condition of the source network charge storage system and the