高电压技术2019，Vol.45Issue(4)：1256-1265,10.DOI:10.13336/j.1003-6520.hve.20190329023
高压低通滤波器限制雷电过电压的应用方案
Application Solution of Limiting Lightning Overvoltage by HVLPF
摘要
Abstract
Lightning overvoltage is one of the main reasons for threatening the safe operation of a transformer substation, and the main protection scheme is currently to reasonably configure the number of lightning arrester and the location of the arrangement. However, the installation of the number of lightning arrester will increase the cost of the substation. The frequency range of lightning over voltage is generally 20 kHz to 1 MHz, which is far more than the 50 Hz of the power frequency voltage. According to this characteristic, we proposed an alternative measure of the HV L-C filter which is composed of the inductance coil and the coupling capacitor. Taking a 500 kV gas insulated substation (GIS) as the research object, we designed an HV L-C filter of which the inductance value is 314 μH, the capacitance value is 12.1 nF, the creepage distance is 23 816 mm, and the dry arc distance is 6 m, and verified the excellent overvoltage limiting performance based on EMTP-ATP simulation. Moreover, we put forward a lightning protection scheme of air insulated substation (AIS) surge arrester and high voltage L-C filter. The simulation and comparison results reveal that the AIS lightning arrester combined with a high voltage L-C filter is more effective and economical in limiting lightning overvoltage. It is proved that the HV L-C filter can replace GIS surge arrester to more effectively complete lightning protection for GIS substation.关键词
雷电过电压/避雷器/高压L-C滤波器/GIS变电站/EMTP-ATP/防雷保护Key words
lightning overvoltage/lightning arrester/HV L-C filter/GIS substation/EMTP-ATP/lightning protection引用本文复制引用
樊友平,陈艺,白津阳,吴蔚,宋佳翰,王彤..高压低通滤波器限制雷电过电压的应用方案[J].高电压技术,2019,45(4):1256-1265,10.基金项目
中国南方电网有限责任公司科技项目 (K-GY2012-050) （K-GY2012-050）
