太阳能Issue(8)：85-94,10.DOI:10.19911/j.1003-0417.tyn20230711.03
一种标杆光伏组串选取方法及其在故障诊断中的应用
BENCHMARK PV STRING SELECTION METHOD AND ITS APPLICATION IN FAULT DIAGNOSIS
摘要
Abstract
In order to achieve accurate and rapid diagnosis of PV string faults,meet the needs of intelligent operation and maintenance of PV power stations,and address the problem of difficulty in determining the benchmark operating state of PV strings in actual operation,this paper proposes a kind of method for selecting PV strings under the benchmark operating state based on actual operating data(i.e.benchmark PV strings),and applies it to PV string fault diagnosis.Firstly,a multi index comprehensive evaluation algorithm is used to select the benchmark PV string.Then,based on the relative error of output voltage and output current between the benchmark PV string and other PV strings,a fault diagnosis rule for PV strings is designed based on the 3σ criterion.Finally,the rationality and effectiveness of the proposed method are verified using actual operating data of PV strings in a centralized PV power station.The research results show that:1)The rationality of the selected benchmark PV string is verified by comparing its output power with other PV strings.2)The fault state displayed by the faulty PV string is consistent with the results obtained based on the proposed fault diagnosis rules,which proves the effectiveness of this fault diagnosis method.关键词
光伏电站/光伏组串/标杆选取/故障诊断/3σ准则Key words
PV power stations/PV strings/benchmark selection/fault diagnosis/rule of 3σ criterion分类
信息技术与安全科学引用本文复制引用
苏营,孙爽,孙勇,乐波,朱红路,吴海飞..一种标杆光伏组串选取方法及其在故障诊断中的应用[J].太阳能,2024,(8):85-94,10.基金项目
中国三峡集团科技项目(WWKY-2021-0173) （WWKY-2021-0173）
