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Since 750 kV transmission lines locate in the high altitude areas of northwest China where the environment condition is comparatively severe, the electromagnetic environmental problems in substations appear to be more prominent. As can be seen from the field observation results of the in-service substation, the frequent or permanent presence of corona discharge is obvious adjacent to the corona rings...
In high altitude areas of northwest China, the corona activity of conductors is serious in 750 kV AC substations, which may lead to severe electromagnetic environmental problems. According to the research and field experience, determination of adequate parameters of conductors is intended to solve these problems. In this paper, the critical E-Field value is obtained by Peek's empirical formula and...
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