摘要
Abstract
According to the requirements of 2011 preventive testing procedures of China Southern Power Grid for the partial discharge (PD) detection in the operation of high voltage switchgear, and to the evaluation testing difficulties during purchase of transient earthing voltage (TEV) PD testing equipment, a testing method based on the analog signal injection is proposed and applied on the testing of the technical parameters of TEV PD detect equipments and positioning equipments, including the frequency bandwidth characteristics, the pulse number, the frequency bandwidth continuity, and the positioning accuracy. The test results show obvious technical differences of the products from different manufacturers. The paper suggests that this method can be used in laboratory tests of high voltage switchgear to cope with field tests, and provide technical support in performance testings during purchase of similar equipments.关键词
高压开关柜/暂态对地电压/模拟信号/性能评测Key words
high voltage switchgear/TEV/analog signal/performance evaluation分类
信息技术与安全科学
