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Method and device for determining charging and discharging states of energy storage system

A charge and discharge state, energy storage system technology, applied in the field of energy storage management, can solve problems such as unreasonable self-scheduling results and economic losses

Pending Publication Date: 2021-08-20
STATE GRID ZHEJIANG ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the arbitrage potential of energy storage in the electricity market is severely affected by market price uncertainty, which can lead to unreasonable self-scheduling outcomes and consequently economic losses

Method used

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  • Method and device for determining charging and discharging states of energy storage system
  • Method and device for determining charging and discharging states of energy storage system
  • Method and device for determining charging and discharging states of energy storage system

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Embodiment Construction

[0075] 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. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0076] The inventors have found through research that due to the charging and discharging characteristics of the energy storage system, it is particularly sensitive to market prices. Therefore, considering all possible price scenarios, the robust operation strategy of the energy storage system is more important. Due to the characteristics of energy storage charging and discharging, the market revenue of energy storage systems includes bot...

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Abstract

A method and device for determining the charging and discharging states of an energy storage system are disclosed, wherein the uncertainty of a power market is considered, the optimal operation strategy when the energy storage system participates in a predetermined market such as a day-ahead market and a real-time market is researched by applying a robust optimization method, robust optimization is carried out on the operation strategy when the energy storage system participates in the predetermined market, and it can be ensured as far as possible that the electricity market has certain profit level prediction even under the worst price condition. When an operator faces the condition that the information of the electric power market is incomplete, the charging and discharging states of the energy storage battery can be set by referring to the method, so that higher market income is obtained, and prediction errors are reduced.

Description

[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on May 26, 2021, with the application number 202110578998.3, and the title of the invention is "a method and device for determining the charging and discharging state of an energy storage system". References are incorporated in this application. technical field [0002] The present application belongs to the technical field of energy storage management, and in particular relates to a method and device for determining the charge and discharge state of an energy storage system. Background technique [0003] With the development of large-scale energy storage (such as battery energy storage, new energy storage) technology, more and more energy storage systems are integrated into the grid. Energy storage can help improve the reliability of the grid or microgrid, smooth out changes in power output from renewable energy generation, and more. Despite all of the valuabl...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q30/02G06Q50/06
CPCG06Q10/04G06Q30/0206G06Q50/06
Inventor 孙轶恺张利军俞楚天徐谦王洪良潘婷杨侃孙秋洁伍耘湘叶耀程袁翔范明霞庄峥宇李圆
Owner STATE GRID ZHEJIANG ELECTRIC POWER