TEV局放仪性能测评研究  

Study on performance evaluation of TEV partial discharge detector

作　　者：闫江宝 周雷 张长胜[1] 谭向宇 YAN Jiangbao;ZHOU Lei;ZHANG Changsheng;TAN Xiangyu(School of Information Engineering and Automation,Kunming University of Science and Technology,Kunming,650504,China;School of Control and Computer Engineering,North China Electric PowerUniversity,Baoding 071003,China;Yunnan Electric Power Research Institute,Yunnan PowerGrid Co.,Ltd.,Kunming 650217,China)

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650504 [2]云南电网责任有限公司电力科学研究院,云南昆明650217 [3]华北电力大学控制与计算机工程学院,河北保定071003

出　　处：《电力科学与工程》2018年第7期74-78,共5页Electric Power Science and Engineering

摘　　要：暂态对地电压(Transient Earth Voltage,TEV)检测技术已经成为高压电气设备的重要检测方法之一,但由于缺乏行业内部统一的标准,厂家生产的仪器良莠不齐,导致出现TEV局放仪在购买以及验收过程中无法对局放仪的性能进行测评问题。对此,本文提出了一种信号模拟测评法,详细分析了TEV局放仪静态特性测评:频率特性、信号线性度、灵敏度、脉冲计数和放电源定位性能5个性能参数。通过对这5个性能参数进行测评研究,可以对TEV局放仪性能有较为全面的认知。Transient earth voltage（ TEV） detection technology has become one of the important detection methods for high voltage electrical equipment. However,there being lacking in uniform standards,the equipment manufactured by different manufacturers differs in quality,which results in the performance evaluation problems of the TEV partial discharge instrument during the purchase and acceptance process. In view of this situation,this paper proposes a signal simulation evaluation method,and the five advanced function evaluation performance items of TEV partial discharge instrument,namely the frequency characteristics,signal linearity,sensitivity,pulse count,and discharge source positioning performance,are analyzes in detail. Through the evaluation of these five items,it is possible to have a more complete understanding of the performance of the TEV partial discharge meter.

关 键 词：暂态对地电压(TEV) 性能测评 信号模拟 

分 类 号：TM932[电气工程—电力电子与电力传动]