南方电网技术2017，Vol.11Issue(3)：31-38,8.DOI:10.13648/j.cnki.issn1674-0629.2017.03.006
500 kV串补MOV短时工频电压耐受能力试验研究
Experimental Research on Short-Time Power Frequency Voltage Withstand Capability of 500 kV Series Compensation MOV
蔡汉生 1刘刚 1贾磊 1胡上茂 1陈喜鹏 1何计谋 2谢清云 2祝嘉喜2
作者信息
- 1. 直流输电技术国家重点实验室(南方电网科学研究院),广州 510663
- 2. 西安西电避雷器有限责任公司,西安 710200
- 折叠
摘要
Abstract
In view of frequent failures of compensation metal oxide voltage limiter (MOV) in China Southern Power Grid (CSG), verification test plan is set up based on the internal fault condition of series compensation system, a power-frequency withstand voltage endurance capability test circuit is built, and eight MOVs are tested.Test results show that a single MOV has strong power-frequency energy absorption capability, MOV can absorb discharge energy again after a few minutes.On the other side, the temperature of MOV valve plate may increase rapidly because of voltage stress and thermal stress, and will lower the lateral insulation of varistor, then trigger surface flashover across the MOV varistors.关键词
串补MOV/仿真计算/试验研究/短时工频耐受电压/能量累积效应/沿面闪络Key words
series compensation MOV/simulation calculation/experimental research/short-time power frequency withstand voltage/cumulative effect of energy/surface flashover分类
信息技术与安全科学引用本文复制引用
蔡汉生,刘刚,贾磊,胡上茂,陈喜鹏,何计谋,谢清云,祝嘉喜..500 kV串补MOV短时工频电压耐受能力试验研究[J].南方电网技术,2017,11(3):31-38,8.
