使用测量电流互感器(TA)的配电网故障检测技术  

IEEE TUTORIAL COURSE，“MICROPROCESSOR RELAYS AND PROTETAION SYSTEMS”，1988 Fault Detection Technique In Distribution Aatomafion Using Measurement Current Transformer

作　　者：徐丙垠[1] 薛永端[2] Phil Gale 

机构地区：[1]山东工程学院,山东淄博255012 [2]西安交通大学,西安710049 [3]英国Hathaway公司

出　　处：《山东工程学院学报》2000年第2期14-18,共5页Journal of Shandong Institute of Technology

摘　　要：介绍了配电网自动化系统的故障管理功能及其对现场终端装置故障检测功能的要求。通过分析测量电流互感器（ＴＡ）饱和的特点，提出通过检测ＴＡ输出波形是否出现间断现象来检测配电网故障，并利用每一周波ＴＡ饱和前的输出计算故障方向、电流幅值等信息。试验结果证明所提出的技术是可行的。本项技术为在配电自动化开关中只安装测量ＴＡ，同时完成高精度电气量测量及故障检测功能奠定了基础。Fault and fault direction detection is critical in fault isolation and restoration application in distribution automation. New fault and fault direction detection algorithms using secondary output of measurement TA are presented in this paper. Fault is detected by measuring waveform interruption angle, and fault direction is determined using waveform samples before TA saturation in each half cycle. The proposed algorithm allows only measurement TA to be installed in sectionalizing switch, while fault and fault direction can still be measured correctly.

关 键 词：故障管理 故障检测 电流互感器 配电网自动化 

分 类 号：TM732[电气工程—电力系统及自动化] TM726