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A method and system for generating smooth fluctuating typical operating conditions of an 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, and achieve the effect of facilitating the suspension of the test and the analysis of test data.

Active Publication Date: 2018-07-24
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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  • A method and system for generating smooth fluctuating typical operating conditions of an energy storage system
  • A method and system for generating smooth fluctuating typical operating conditions of an energy storage system
  • A method and system for generating smooth fluctuating typical operating conditions of an 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] Battery energy state (SOE, State Of Energy): 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. Such as ...

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Abstract

The present invention proposes a method and system for generating a typical working condition of smooth fluctuations in an energy storage system. The method includes: obtaining the working data of the energy storage system in the smooth fluctuation mode; The curve is calculated to generate the corresponding characteristic distribution data; the smooth fluctuation curve is segmented according to a certain unit time t to obtain multiple unit smooth fluctuation curve segments; a certain number of unit smooth fluctuation curve segments are selected to form multiple time length a The combined smooth fluctuation curve segment of ×t; according to the multiple combined smooth fluctuation curve segments, the corresponding characteristic distribution data is generated by calculation; the difference between the characteristic distribution data corresponding to the multiple combined smooth fluctuation curve segments and the characteristic distribution data corresponding to the smooth fluctuation curve is calculated The error value between; select the characteristic distribution data corresponding to the segment of the combined smooth fluctuation curve whose error value is less than a certain value, and 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 Patents(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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