CN-122026623-A - Intelligent cooperative control method and system for industrial and commercial energy storage system

CN122026623ACN 122026623 ACN122026623 ACN 122026623ACN-122026623-A

Abstract

The invention relates to an intelligent cooperative control method and system of an industrial and commercial energy storage system, and belongs to the technical field of electric power energy storage and intelligent power grid control. The method comprises the steps of connecting a first energy storage system with a second energy storage system if only the residual demand of the first transformer meets the total target charging power, connecting the first energy storage system with the second transformer if only the residual demand of the second transformer meets the total target charging power, connecting the first energy storage system with the second energy storage system if only the total load power of the first transformer meets the total target discharging power, and connecting the first energy storage system with the second energy storage system if only the total load power of the second transformer meets the total target discharging power. According to the invention, through controlling the connection relation between the two transformers and the two energy storage systems, the power reserve resources of the energy storage systems under the two transformers are fully utilized, and the operation efficiency of the energy storage systems is improved.

Inventors

MA SHULI
Shao Saike
JIA JINGYI
GUAN YINGYING
LIU HUAIZHAO
SHEN ZHIGUANG
LUO XIN
WANG HAORAN
ZHANG JUAN
ZHOU ZHENZHEN
ZHOU LONGLONG
CHEN SHANGSHANG

Assignees

许昌电科储能技术有限公司
中国电气装备集团储能科技有限公司

Dates

Publication Date: 20260512
Application Date: 20241029

Claims (10)

1. An intelligent cooperative control method of an industrial and commercial energy storage system is characterized by comprising the following steps: when the first energy storage system under the first transformer and the second energy storage system under the second transformer are both under the charging working condition, the following control is performed: If the remaining demand of the first transformer meets the target charging power of the first energy storage system and the remaining demand of the second transformer meets the target charging power of the second energy storage system, or if neither the remaining demand of the first transformer nor the remaining demand of the second transformer alone meets the total target charging power, the first energy storage system is connected with the first transformer, and the second energy storage system is connected with the second transformer; if only the residual demand of the first transformer meets the total target charging power, the first energy storage system is connected with the second energy storage system; If only the residual demand of the second transformer meets the total target charging power, the first energy storage system is connected with the second transformer; when the first energy storage system under the first transformer and the second energy storage system under the second transformer are both under the discharging working condition, the following control is performed: If the total load power of the first transformer meets the target discharge power of the first energy storage system and the total load power of the second transformer meets the target discharge power of the second energy storage system, or if the total load power of the first transformer and the total load power of the second transformer cannot meet the total target discharge power alone, the first energy storage system is connected with the first transformer, and the second energy storage system is connected with the second transformer; If only the total load power of the first transformer meets the total target discharge power, the first energy storage system is connected with the second energy storage system; If only the total load power of the second transformer meets the total target discharge power, the first energy storage system is connected with the second transformer; The residual demand of the first transformer is the difference between the allowable demand of the first transformer and the total load power of the first transformer, the residual demand of the second transformer is the difference between the allowable demand of the second transformer and the total load power of the second transformer, the total target charging power is the sum of the target charging power of the first energy storage system and the target charging power of the second energy storage system, and the total target discharging power is the sum of the target discharging power of the first energy storage system and the target discharging power of the second energy storage system.
2. The intelligent cooperative control method of an industrial and commercial energy storage system according to claim 1, wherein the connection between the first energy storage system and the second transformer is realized by the following steps: acquiring a connection state of first switching equipment of a first energy storage system, and if the connection state of the first switching equipment is that the first switching equipment is connected with a second transformer and disconnected with the first transformer, not switching; If the connection state of the first switching equipment is that the first switching equipment is disconnected with the second transformer and is connected with the first transformer, a first shutdown instruction is sent to all energy storage cabinets of the first energy storage system, after the operation state of all the energy storage cabinets of the first energy storage system is in the shutdown state, the first switching equipment is connected with the second transformer and is disconnected with the first transformer through the action of the first switching equipment, a first reset instruction is sent to all the energy storage cabinets of the first energy storage system, and a first starting instruction is sent to all the energy storage cabinets of the first energy storage system after the fault of the first energy storage system is eliminated; the first switching device is used for realizing the switching of the connection of the first energy storage system and the first transformer and the connection of the first energy storage system and the second transformer.
3. The intelligent cooperative control method of an industrial and commercial energy storage system according to claim 1, wherein the connection between the second energy storage system and the first transformer is realized by the following steps: acquiring a connection state of second switching equipment of a second energy storage system, and if the connection state of the second switching equipment is that the second switching equipment is connected with a first transformer and disconnected with a second transformer, not switching; If the connection state of the second switching equipment is that the second switching equipment is disconnected with the first transformer and is connected with the second transformer, a second shutdown instruction is sent to all energy storage cabinets of the second energy storage system, after the operation states of all the energy storage cabinets of the second energy storage system are in shutdown states, the second switching equipment is connected with the first transformer and is disconnected with the second transformer through the action of the second switching equipment, a second reset instruction is sent to all the energy storage cabinets of the second energy storage system, and a second starting instruction is sent to all the energy storage cabinets of the second energy storage system after the failure of the second energy storage system is eliminated; The second switching device is used for realizing the switching of the connection of the second energy storage system and the second transformer and the connection of the second energy storage system and the first transformer.
4. The intelligent cooperative control method of an industrial and commercial energy storage system according to claim 1, wherein the connection between the first energy storage system and the first transformer is realized by the following steps: acquiring a connection state of first switching equipment of a first energy storage system, and if the connection state of the first switching equipment is that the first switching equipment is connected with a first transformer and disconnected with a second transformer, not switching; If the connection state of the first switching equipment is that the first switching equipment is disconnected with the first transformer and is connected with the second transformer, a first shutdown instruction is sent to all energy storage cabinets of the first energy storage system, after the operation state of all the energy storage cabinets of the first energy storage system is in the shutdown state, the first switching equipment is connected with the first transformer and is disconnected with the second transformer through the action of the first switching equipment, a first reset instruction is sent to all the energy storage cabinets of the first energy storage system, and a first starting instruction is sent to all the energy storage cabinets of the first energy storage system after the fault of the first energy storage system is eliminated; the first switching device is used for realizing the switching of the connection of the first energy storage system and the first transformer and the connection of the first energy storage system and the second transformer.
5. The intelligent cooperative control method of an industrial and commercial energy storage system according to claim 1, wherein the connection between the second energy storage system and the second transformer is realized by the following steps: acquiring a connection state of second switching equipment of a second energy storage system, and if the connection state of the second switching equipment is that the second switching equipment is connected with a second transformer and disconnected with a first transformer, not switching; If the connection state of the second switching equipment is that the second switching equipment is disconnected with the second transformer and is connected with the first transformer, a second shutdown instruction is sent to all energy storage cabinets of the second energy storage system, after the operation states of all the energy storage cabinets of the second energy storage system are in shutdown states, the connection of the second switching equipment with the second transformer and the disconnection of the second switching equipment with the first transformer are realized through the action of the second switching equipment, a second reset instruction is sent to all the energy storage cabinets of the second energy storage system, and a second starting instruction is sent to all the energy storage cabinets of the second energy storage system after the fault of the second energy storage system is eliminated; The second switching device is used for realizing the switching of the connection of the second energy storage system and the second transformer and the connection of the second energy storage system and the first transformer.
6. The intelligent coordinated control method of an industrial and commercial energy storage system of claim 2 or 4, wherein the first shutdown command, the first reset command, and the first start command are each sent by an end host of an energy management system of the first energy storage system.
7. The intelligent coordinated control method of an industrial and commercial energy storage system according to claim 3 or 5, wherein the second shutdown command, the second reset command and the second start command are sent by an end host of an energy management system of the second energy storage system.
8. The intelligent coordinated control method of an industrial and commercial energy storage system of claim 1, further comprising the steps of: Under the charging working condition, under the condition that the first energy storage system and the second energy storage system are connected with a first transformer, the first transformer is controlled according to the charging power of the first energy storage system, the charging power of the second energy storage system and the total load power and the maximum demand of the first transformer, so that the sum of the first total execution power of the first energy storage system, the second total execution power of the second energy storage system and the first residual load power is not larger than the maximum demand of the first transformer; Under the charging working condition, under the condition that the first energy storage system and the second energy storage system are connected with the second transformer, the second transformer is controlled in a demand mode according to the charging power of the first energy storage system, the charging power of the second energy storage system and the total load power and the maximum demand of the second transformer, so that the sum of the first total execution power of the first energy storage system, the second total execution power of the second energy storage system and the second residual load power is not larger than the maximum demand of the second transformer; Under the charging working condition, the first energy storage system is connected with the first transformer, and under the condition that the second energy storage system is connected with the second transformer, the first transformer is controlled according to the charging power of the first energy storage system, the total load power and the maximum demand of the first transformer, so that the sum of the first total execution power of the first energy storage system and the first residual load power is ensured to be not more than the maximum demand of the first transformer; Under the charging working condition, the first energy storage system is connected with the first transformer, and under the condition that the second energy storage system is connected with the second transformer, the second transformer is controlled according to the charging power of the second energy storage system, the total load power and the maximum demand of the second transformer, so that the sum of the second total execution power of the second energy storage system and the second residual load power is ensured to be not more than the maximum demand of the second transformer; Under the charging working condition, the expression of the first total execution power of the first energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a first transformer is min ((A is needed-A minus) (A/(A can+B can)), and A is calculated); under the charging working condition, the expression of the second total execution power of the second energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a first transformer is min ((A is needed-A minus) (B/(A can+B can)), and B is calculated); Under the charging working condition, the expression of the first total execution power of the first energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a second transformer is min ((B is needed-B minus) (A/(A can+B can)), and A is calculated; under the charging working condition, the expression of the second total execution power of the second energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a second transformer is min ((B-needed-B-minus) (B/(A+B) (B may be)), and B is calculated); Under the charging working condition, the first energy storage system is connected with the first transformer, and the expression of the first total execution power of the first energy storage system under the condition that the second energy storage system is connected with the second transformer is min ((A needs-A minus), A is calculated); Under the charging working condition, the first energy storage system is connected with the first transformer, and the expression of the second total execution power of the second energy storage system under the condition that the second energy storage system is connected with the second transformer is min ((B-minus), B-meter); In the above formula, a is the maximum required amount of the first transformer, B is the maximum required amount of the second transformer, a is the first residual load power, B is the second residual load power, a is the number of available energy storage cabinets in the first energy storage system, B is the number of available energy storage cabinets in the second energy storage system, a is the planned target power of the first energy storage system, and B is the planned target power of the second energy storage system; the first residual load power is the difference value between the total load power of the first transformer and the charging power of all the energy storage systems connected with the first transformer, and the second residual load power is the difference value between the total load power of the second transformer and the charging power of all the energy storage systems connected with the second transformer.
9. The intelligent coordinated control method of an industrial and commercial energy storage system of claim 1, further comprising the steps of: under the discharging working condition, under the condition that the first energy storage system and the second energy storage system are connected with a first transformer, the first total execution power of the first energy storage system and the second total execution power of the second energy storage system are obtained according to the discharging power of the first energy storage system, the discharging power of the second energy storage system and the total load power of the first transformer, and the sum of the first total execution power of the first energy storage system and the second total execution power of the second energy storage system is not larger than the total load power of the first transformer, so that no backflow is ensured and the load requirement is met; Under the discharging working condition, under the condition that the first energy storage system is connected with the second transformer, calculating the first total execution power of the first energy storage system and the second total execution power of the second energy storage system according to the discharging power of the first energy storage system, the discharging power of the second energy storage system and the total load power of the second transformer, wherein the sum of the first total execution power of the first energy storage system and the second total execution power of the second energy storage system is not larger than the total load power of the second transformer, so that no backflow is ensured and the load requirement is met; Under the discharging working condition, the first energy storage system is connected with the first transformer, and under the condition that the second energy storage system is connected with the second transformer, the first total execution power of the first energy storage system is calculated according to the discharging power of the first energy storage system and the total load power of the first transformer, and the first total execution power of the first energy storage system is not larger than the total load power of the first transformer, so that no backflow is ensured and the load requirement is met; Under the discharging working condition, the first energy storage system is connected with the first transformer, and under the condition that the second energy storage system is connected with the second transformer, the second total execution power of the second energy storage system is calculated according to the discharging power of the second energy storage system and the total load power of the second transformer, and the second total execution power of the second energy storage system is not larger than the total load power of the second transformer, so that no backflow is ensured and the load requirement is met; Under the discharging working condition, the expression of the first total execution power of the first energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a first transformer is min (A minus, A count); Under the discharging working condition, the expression of the second total execution power of the second energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a first transformer is min (A minus, B count); under the discharging working condition, the expression of the first total execution power of the first energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a second transformer is min (B minus, A count); Under the discharging working condition, the expression of the second total execution power of the second energy storage system under the condition that the first energy storage system and the second energy storage system are connected with a second transformer is min (B minus, B count); Under the discharging working condition, the first energy storage system is connected with the first transformer, and the expression of the first total execution power of the first energy storage system under the condition that the second energy storage system is connected with the second transformer is min (A minus, A count); Under the discharging working condition, the first energy storage system is connected with the first transformer, and the expression of the second total execution power of the second energy storage system under the condition that the second energy storage system is connected with the second transformer is min (Bburden, bmeter); In the above formula, a is negative for the first residual load power, B is negative for the second residual load power, a is the planned target power of the first energy storage system, and B is the planned target power of the second energy storage system; the first residual load power is the difference value between the total load power of the first transformer and the discharge power of all the energy storage systems connected with the first transformer, and the second residual load power is the difference value between the total load power of the second transformer and the discharge power of all the energy storage systems connected with the second transformer.
10. An intelligent cooperative control system for an industrial and commercial energy storage system, comprising a processor, wherein the processor is configured to execute a computer program to implement the steps of the intelligent cooperative control method for an industrial and commercial energy storage system of any of claims 1 to 9.

Description

Intelligent cooperative control method and system for industrial and commercial energy storage system Technical Field The invention relates to an intelligent cooperative control method and system of an industrial and commercial energy storage system, and belongs to the technical field of electric power energy storage and intelligent power grid control. Background With the continuous increase of industrial and commercial power demands, the energy storage system has increasingly outstanding roles in power balance, energy conservation and consumption reduction. Currently, there are a large number of electric equipment and enterprises in an industrial park, and a plurality of transformers are required to meet the electricity requirements of different enterprises, and the transformers may be relatively concentrated in position and belong to similar transformers. Because the control of the industrial and commercial energy storage systems of similar transformers is independent, if one of the transformers is failed or damaged, the energy storage system under the transformer is not utilized, and the power reserve resource of the energy storage system under the transformer cannot be fully utilized, so that the operation efficiency of the energy storage system is low. Disclosure of Invention The invention aims to provide an intelligent cooperative control method and system for industrial and commercial energy storage systems, which are used for solving the problem that the power reserve resources of the energy storage systems cannot be fully utilized when the energy storage systems among existing transformers are controlled independently. In order to achieve the above object, the present invention provides a method comprising: The invention discloses an intelligent cooperative control method of an industrial and commercial energy storage system, which comprises the following steps: when the first energy storage system under the first transformer and the second energy storage system under the second transformer are both under the charging working condition, the following control is performed: If the remaining demand of the first transformer meets the target charging power of the first energy storage system and the remaining demand of the second transformer meets the target charging power of the second energy storage system, or if neither the remaining demand of the first transformer nor the remaining demand of the second transformer alone meets the total target charging power, the first energy storage system is connected with the first transformer, and the second energy storage system is connected with the second transformer; if only the residual demand of the first transformer meets the total target charging power, the first energy storage system is connected with the second energy storage system; if only the residual demand of the second transformer meets the total target charging power, the first energy storage system is connected with the second transformer; when the first energy storage system under the first transformer and the second energy storage system under the second transformer are both under the discharging working condition, the following control is performed: If the total load power of the first transformer meets the target discharge power of the first energy storage system and the total load power of the second transformer meets the target discharge power of the second energy storage system, or if the total load power of the first transformer and the total load power of the second transformer cannot meet the total target discharge power alone, the first energy storage system is connected with the first transformer, and the second energy storage system is connected with the second transformer; if only the total load power of the first transformer meets the total target discharge power, the first energy storage system is connected with the second energy storage system; If only the total load power of the second transformer meets the total target discharge power, the first energy storage system is connected with the second transformer; The residual demand of the first transformer is the difference between the allowable demand of the first transformer and the total load power of the first transformer, the residual demand of the second transformer is the difference between the allowable demand of the second transformer and the total load power of the second transformer, the total target charging power is the sum of the target charging power of the first energy storage system and the target charging power of the second energy storage system, and the total target discharging power is the sum of the target discharging power of the first energy storage system and the target discharging power of the second energy storage system. Further, the connection between the first energy storage system and the second transformer is realized through the following steps: acquiring the connection state of first switching equi