Distributed energy storage operation health state analysis method considering battery consistency

• Main Authors: WANG SHUAI, DING RUI, REN CHENGHUAN, YU TIANYI, DANG WEI, GUO GANG, HAN YONGYUE, ZHANG ZUOTING, LI DENING, XU SHUO, XIE PEIRAN, TAN DASHUAI, YAN SONG, TIAN YOUJIA, BIAN HAIBO, XU ZHICHENG, LI YAN, DAI BIN, JIA QUE, LU TAO, YUAN LEILEI
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention provides a distributed energy storage operation health state analysis method considering battery consistency, and the method comprises the steps: collecting the operation state data of an energy storage system in a region, carrying out the big data analysis, and carrying out the consistency evaluation of the index data, such as the voltage and temperature, of a single battery; establishing a fuzzy relation matrix of the consistency index and the consistency performance level, determining the weight of each evaluation index through an entropy weight method, obtaining a consistency evaluation matrix through the product of the fuzzy relation matrix and an index weight matrix, and selecting the maximum value as a consistency evaluation index value. The indexes such as the consistency evaluation index, the coulomb coefficient and the effective charging capacity are integrated, the indexes are normalized through an index membership function, the health index weight of each state is determined through