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Method and system for generating typical working condition of smooth fluctuation of energy storage system

A technology that smoothes fluctuations and typical working conditions. It is applied in the electric power field and can solve the problem of extracting typical working conditions without large-capacity energy storage systems, so as to facilitate the suspension of tests and the analysis of test data.

Active Publication Date: 2016-05-25
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no research results for the extraction of typical working conditions of large-capacity energy storage systems

Method used

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  • Method and system for generating typical working condition of smooth fluctuation of energy storage system
  • Method and system for generating typical working condition of smooth fluctuation of energy storage system
  • Method and system for generating typical working condition of smooth fluctuation of energy storage system

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Embodiment Construction

[0017] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0018] In the embodiment of the present invention, some terms involved are described here first:

[0019] The energy state of the battery (SOE, StateOfEnergy): SOE is E rem with E max percentage; among them, E max It is the maximum available energy of the battery, defined as the energy released by the battery from the fully charged state to the discharged state with a sufficiently small current; E rem is the remaining energy, which is defined as the energy released by the battery from the current state with a sufficiently small current to the fully discharged state.

[0020] figure 1 It is a flowchart of a method for generating a typical operating condition of smooth fluctuations of an energy storage system according to an embodiment of the present invention. ...

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Abstract

The invention discloses a method and system for generating a typical working condition of the smooth fluctuation of an energy storage system. The method comprises the following steps: obtaining the working data of the energy storage system under a smooth fluctuation mode; processing the working data to generate a smooth fluctuation curve and calculating according to the smooth fluctuation curve to generate corresponding feature distribution data; segmenting the smooth fluctuation curve according to a certain unit time so as to obtain a plurality of unit smooth fluctuation curve segments; selecting a certain quantity (a) of unit smooth fluctuation curve segments to form a plurality of combined smooth fluctuation curve segments with time length of a*t; calculating according to the combined smooth fluctuation curve segments to generate corresponding feature distribution data; calculating the error values between the feature distribution data corresponding to the combined smooth fluctuation curve segments and the feature distribution data corresponding to the smooth fluctuation curve; and selecting the feature distribution data, the error value of which is less than a certain numerical value, corresponding to the combined smooth fluctuation curve segments to synthesize a typical working condition diagram of the smooth fluctuation of the energy storage system.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a method and system for generating a smooth fluctuation typical working condition of an energy storage system. Background technique [0002] With the rapid development of wind power and photovoltaic power generation installed capacity in my country, the volatility and randomness of wind and light resources have brought new technical problems to the safe operation of power grids. As an effective way to stabilize the fluctuation and randomness of wind and rain, the energy storage system has also become a research hotspot. [0003] Grid-connected large-capacity lithium battery energy storage power stations are generally composed of lithium battery strings, converters, energy management systems, energy storage monitoring systems and their supporting electrical circuits. Its operating conditions generally include peak shaving and valley filling, smoothing fluctuations, tracking plan pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06Q50/06
Inventor 李娜白恺李智宋鹏崔正湃宗瑾柳玉陈豪蔡建明
Owner STATE GRID CORP OF CHINA
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