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Method for analyzing charge and discharge capacity of large-scale energy storage clusters

A technology of charge and discharge capacity and analysis method, which is applied in the field of power system control and can solve problems such as failure to meet dispatching operation requirements

Active Publication Date: 2019-06-14
NARI TECH CO LTD +2
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] With the increase of energy storage scale, dispatching needs to master the dispatchable information of the energy storage power source collection. Due to the different types of energy storage power stations and the large number of power stations, there are many types of energy storage power stations such as lead-acid, lithium iron phosphate, and all-vanadium liquid flow. Relying on information such as backup monitoring and the remaining power (SOC) of each energy storage station is far from meeting the dispatching and operation requirements. How to send information through each energy storage station, integrate the power and quantity information of the energy storage, and analyze and fit each energy storage set as The overall charge and discharge capacity of energy storage resources provides decision-making basis for large-scale energy storage dispatch control, and has become an important problem to be solved in the operation of the dispatch system

Method used

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  • Method for analyzing charge and discharge capacity of large-scale energy storage clusters
  • Method for analyzing charge and discharge capacity of large-scale energy storage clusters
  • Method for analyzing charge and discharge capacity of large-scale energy storage clusters

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Embodiment 1

[0105] Step 1: According to the standard requirements for the connection and scheduling of energy storage power stations in various provinces, the energy storage power station sends remote measurement and remote signaling data, including: actual output, state of charge (SOC), maximum charging power, maximum discharging power, maximum Charging power available time, maximum discharge power available time, SOC power station upper limit, SOC power station lower limit and other remote measurements, charging lock, discharge lock, charging completion, discharge completion, AGC remote input and other remote signaling quantities;

[0106] Obtain the remote signal and remote measurement sent by each energy storage power station, and predefine the energy storage power station cluster to be monitored as the energy storage monitoring and control object after aggregation. The cluster can be defined as a certain section or partition, or as a certain A collection of power sources; and define t...

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Abstract

The invention discloses a method for analyzing charge and discharge capacity of large-scale energy storage clusters. The method comprises the following steps of respectively computing specific parameters of pre-selected energy storage power station clusters according to the telemetering amount and the remote signaling amount which are uploaded by each energy storage power station, and determiningmaximum available time meeting set charge and discharge power and maximum available charge and discharge power meeting set charge and discharge time of each energy storage power station cluster according to the computed specific parameters of the energy storage power station cluster. According to the method, the charge and discharge capacity of each energy storage set as a whole of energy storageresources is analyzed, and a powerful data support is provided for the power control characteristics after the large-scale energy storage power stations are connected to a power grid, so that the control is more effective and accurate.

Description

technical field [0001] The invention belongs to the field of power system control, and relates to a large-scale energy storage scheduling control auxiliary decision-making analysis method, more precisely, the invention relates to a large-scale energy storage cluster charging and discharging capability analysis method. Background technique [0002] During the operation of the power system, automatic generation control (AGC) realizes the control of frequency and tie-line power by adjusting the active output of frequency regulation resources in the power grid in real time. Negative impact. After the large-scale energy storage power station is connected to the grid, with its fast and precise power control characteristics, it can effectively improve the overall efficiency and economy of system frequency regulation. [0003] Through backup monitoring, the dispatching center can grasp the current active power adjustment available margin of the power grid in real time, so as to cop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J15/00H02J3/28
Inventor 徐瑞徐春雷张琦兵张小白仇晨光吴继平苏大威涂孟夫李刚滕贤亮樊海锋庞涛
Owner NARI TECH CO LTD
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