规模化储能电站电池一致性的统计特性研究

发电技术

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规模化储能电站电池一致性的统计特性研究

靳文涛，李相俊，惠东，李静立，祁万年，吕成渊

1.新能源与储能运行控制国家重点实验室（中国电力科学研究院有限公司），北京市海淀区 100192； 2. 青海格尔木鲁能新能源有限公司，青海省格尔木市 816000

Study on Statistical Characteristics of Battery Consistency in Large-scale Energy Storage Power Stations

JIN Wentao, LI Xiangjun, HUI Dong, LI Jingli, QI Wannian, LÜ Chengyuan

1.State Key Laboratory of Control and Operation of Renewable Energy and Storage Systems (China Electric Power Research Institute), Haidian District, Beijing 100192; 2. Qinghai Golmud Luneng New Energy Co., Ltd., Golmud 816000, Qinghai Province, China

摘要/Abstract

摘要： 通过串并联方式组成的兆瓦级储能电站在长期运行过程中，将出现电池单体不一致性的问题。电压、温度变化特性可直观反映储能电站电池单体间的不一致性。利用储能电池极差电压、累计极差电压、电压标准差、极差温度、累计极差温度指标来分析储能电站电池单体一致性的统计特性。通过长时间尺度电池单体一致性的统计特性分析，结合储能电池现场运行状况，可及时发现可能存在异常的电池单体，为储能电站健康状态评估提供数据支撑，降低储能电站系统性运行风险。

关键词: 储能电站电池单体, 一致性, 极差电压, 统计特性

Abstract: In the long-term operation of MW-level energy storage power stations composed of series and parallel connections, the inconsistency of battery cells will occur. Voltage and temperature variation characteristics can directly reflect the inconsistency between battery cells in energy storage power station. The statistical characteristics of battery cell consistency in energy storage power station were analyzed by using extreme voltage, accumulated extreme voltage, voltage standard deviation, extreme temperature, accumulated extreme temperature of energy storage battery. By analyzing the statistical characteristics of the consistency of battery cells on a long-term scale,combined with the on-site operating status of energy storage battery, abnormal battery cells can be found in time, which can provide data support for the health assessment of energy storage power station, and reduce the systematic operation risk of energy storage power station.

Key words: energy storage power station, battery cell, consistency, extreme voltage, statistical characteristics

靳文涛, 李相俊, 惠东, 李静立, 祁万年, 吕成渊. 规模化储能电站电池一致性的统计特性研究[J]. 发电技术.

JIN Wentao, LI Xiangjun, HUI Dong, LI Jingli, QI Wannian, LÜ Chengyuan. Study on Statistical Characteristics of Battery Consistency in Large-scale Energy Storage Power Stations[J]. Power Generation Technology.