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This article according to internal and external actual situation from the typical 220 kV substation connection, ATP-EMTP simulation program is applied to simulate and analyze under all effect is to be considered, the rules of over-voltage from transformer and the position of arrester is founded, and found that if the incoming line of overhead line to open-substation have CVT, the maximum protective...
Aimed at the overvoltage trouble of electric equipments in 500 kV GIS substation caused by lightning strikes to overhead line, four protection solutions were proposed. Through ATP simulation, the protection margins and economy of the protective devices such as transformer, reactor, CVT and GIS-inlet were estimated. It is concluded that installation of a set of outdoor type surge arrester at line inlet...
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