摘要
由于超高压GIS的广泛应用,在许多变电站,都直接把电抗器接在GIS母线上。由于无功功率的变化,需要对电抗器频繁投切。快速暂态过电压亦随之产生,对电抗器以及相关设备产生危害。以某330kVGIS为例,计算了过电压的峰值,分析了金属氧化物避雷器的保护效果。
With the widely application of high-voltage GIS in many substations,reactors are connected to the GIS bus directly.Because of the fluctuation of reactive power,the reactor needs to be switched frequently.Then VFTO can be generated by switching and spreads out of the GIS in traveling wave,which may endanger the reactor and correlative equipments.Taking one 330kV GIS as an example,the author calculates this kind of over-voltage with EMTP.The protective effect of metal oxide arrester is also discussed.
出处
《电瓷避雷器》
CAS
北大核心
2004年第6期38-41,共4页
Insulators and Surge Arresters
关键词
GIS
电抗器
快速暂态过电压
gas insulated substation(GIS)
reactor
very fast transient over-voltage(VFTO)
