GIS 内置特高频传感器响应特性试验及结果分析

Response Characteristics Test for Built-in UHF Sensor of GIS and Its Result Analysis

摘要:

为确保安装使用内置特高频传感器的气体绝缘金属封闭开关设备局部放电监测系统可靠工作，使用吉赫兹横电磁波室试验平台，对四川电网新建1000 kV及500 kV输变电工程气体绝缘金属封闭开关设备所使用的665只内置特高频传感器开展了频率响应特性试验，并且使用可调制脉冲发生装置对部分已经完成现场安装的传感器开展了检测灵敏度试验。结合传感器原理及安装要求对试验结果进行了分析，并据此对内置特高频传感器及局部放电监测系统现场应用提出了建议。

Abstract:

In order to guarantee the reliability of partial discharge monitoring system in gas insulated metal enclosed switchgear (GIS) installed with built-in ultra-high frequency(UHF) sensors, the tests for frequency response characteristics of 665 built-in sensors used in newly-built 1000 kV and 500 kV power transmission and transformation projects are carried out through the gigahertz transverse electromagnetic (GTEM) platform, and the detection sensitivity test is carried out by using a modulated pulse generator for some sensors already installed on GIS. Based on the principle of sensors design and installation requirements,the test results are analyzed, and the suggestions are proposed for the application of built-in UHF sensors and partial discharge monitoring systems.