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It is necessary to research live working on UHV electrode line, so as to support DC UHV maintenance. As the electrode line of Zhengzhou converter station for example, the ground faults overvoltage on BP and GR modes were calculated. The maximum switching overvoltage was 288kV under the condition of live working. It was determined by the grounding fault of high end YY converter valves. The switching...
110kV Composite Material Pole has many advantages over traditional steel towers and concrete poles to enhance the operation reliability of power system. The grounding methods has obvious effect on the phase-ground insulation performance of composite materials pole of 110 kV transmission line. Four grounding methods of 110 kV composite materials pole were investigated in this paper, which including...
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