交直流混合配网直流高阻故障自动检测方法  

Automatic Detection Method for DC High Resistance Fault in AC-DC Hybrid Distribution Network

作　　者：文本颖 叶雨 吴季焜 叶恒志 陈佳桥 WEN Benying;YE Yu;WU Jikun;YE Hengzhi;CHEN Jiaqiao(Fujian Electric Power Survey and Design Institute Co.,Ltd.,China Electric Power Construction Group,Fuzhou,Fujian 350003,China)

机构地区：[1]中国电建集团福建省电力勘测设计院有限公司,福建福州350003

出　　处：《自动化应用》2025年第4期198-200,共3页Automation Application

摘　　要：针对常规高阻故障自动检测方法准确性不足的问题,设计了交直流混合配网直流高阻故障自动化检测方法。该方法先计算零序电压向量突变量幅值,并设定合理的自动检测期望阈值,以减少误检,然后生成了包含特征能量占比、特征相关系数、特征积分面积的自动检测判据,以完成交直流混合配网直流高阻故障自动检测设计。最后基于算例验证所提方法的先进性,算例分析结果表明,所提方法故障检测准确性较高,应用效果较好。Aiming at the insufficient accuracy of the conventional high resistance fault automatic detection method,this paper designs the automatic DC high resistance fault detection method in the AC-DC hybrid distribution network.This method first calculates the mutation amplitude of zero sequence voltage vector,and sets a reasonable expected threshold of automatic detection to reduce false detection,and then generates an automatic detection criterion including characteristic energy proportion,characteristic correlation coefficient and characteristic integral area,so as to complete the automatic detection design of DC high-resistance fault in AC-DC hybrid distribution network.Finally,the progressiveness of the proposed method is verified based on an example,the analysis results of the example show that the proposed method has high accuracy in fault detection and good application effect.

关 键 词：交直流 混合配网 直流高阻 高阻故障 自动检测方法 

分 类 号：TM743[电气工程—电力系统及自动化]