中国电力2025，Vol.58Issue(8)：84-93,138,11.DOI:10.11930/j.issn.1004-9649.202503049
电化学储能系统接入条件下正序故障分量方向元件适应性分析
Adaptability Analysis of Positive Sequence Fault Component Direction Element Under the Condition of Electrochemical Energy Storage System
摘要
Abstract
When a fault occurs in the outgoing line of a large-scale battery energy storage system(BESS),the positive-sequence fault component impedance characteristics differ significantly from traditional power sources due to the influence of its low voltage ride-through(LVRT)control strategy.Based on BESS-related technical specifications,this paper categorizes the operational mode transition methods into three types according to BESS charging/discharging modes before and after faults.Furthermore,taking into account the LVRT control strategy of BESS,we derive expressions of the positive-sequence fault component impedance angle under different operational mode transitions,thereby analyzing the impacts of various influencing factors on the impedance angle.Accordingly,the adaptability of positive-sequence fault component directional elements in BESS-integrated scenarios is investigated.Finally,the correctness of theoretical analysis is verified using the Matlab/Simulink simulation platform.关键词
电池储能系统/控制策略/低电压穿越/正序故障分量方向元件/适应性分析/工作模式转换Key words
battery energy storage/control strategy/low voltage ride-through/positive sequence fault component direction element/adaptability analysis/mode switching引用本文复制引用
陈瑞,郑涛,任翔,沈文韬,张璐,强雨泽,刘博,王瑜璇..电化学储能系统接入条件下正序故障分量方向元件适应性分析[J].中国电力,2025,58(8):84-93,138,11.基金项目
国家重点研发计划资助项目(2023YFB2406800) （2023YFB2406800）
国家电网有限公司科技项目(B3018K240002). This work is supported by the National Key Research and Development Program of China(No.2023YFB2406800)and the Science and Technology Project of SGCC(No.B3018K240002). （B3018K240002）
