基于综合谐波驱动的光伏场站集电线路保护新方案  

New Solution for Photovoltaic Station Collector Line Protection Based on Comprehensive Harmonic Drive

作　　者：沃建栋 潘武略 李跃辉 吴佳毅 WO Jiandong;PAN Wulue;LI Yuehui;WU Jiayi(State Grid Zhejiang Jinhua Power Supply Co.,Ltd.,Jinhua 321000,China;State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]国网金华供电公司,浙江金华321000 [2]国网浙江省电力有限公司,浙江杭州310000

出　　处：《中国电力》2025年第2期133-139,共7页Electric Power

基　　金：国家自然科学基金资助项目(52077120);国网浙江省电力有限公司科技项目(5211JH230001)。

摘　　要：提出一种基于综合谐波驱动的光伏场站集电线路保护新方案。首先分析光伏场站集电线故障后的谐波来源及分布特性,通过全光纤电流互感器(fiber optical current transformer,FOCT)获取电流谐波,并基于非支配排序遗传算法Ⅱ(nondominated sorting genetic algorithmⅡ,NSGA-Ⅱ)计算最优谐波特征权值,以提升故障电流综合谐波特征显度,同时,构建了高次谐波启动判据和综合谐波动作判据。对于不同故障情况进行仿真研究,验证了所提方法的有效性。A new protection scheme for the collection line of photovoltaic power station based on comprehensive harmonic drive is proposed.Firstly,the harmonic sources and characteristics of the collection line fault in photovoltaic power station are analyzed,and the current harmonics are obtained by fiber optical current transformer(FOCT),and the harmonic characteristic weight is calculated based on the nondominated sorting genetic algorithmⅡ(NSGA-Ⅱ)to improve the comprehensive harmonic characteristic of fault current.At the time,the high-order harmonic start-up criterion and the comprehensive harmonic action criterion are constructed.The simulation study is carried out for different fault conditions,and the effectiveness of proposed method is verified.

关 键 词：光伏电站 集电线路 暂态特征 谐波保护 

分 类 号：TM4[电气工程—电器]