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Zhang D.,New Northeast Electrical Shenyang HV Switchgear Co. | Zhao Y.-X.,New Northeast Electrical Shenyang HV Switchgear Co. | Zhao Y.-X.,Shenyang University of Technology | Zheng Y.-H.,New Northeast Electrical Shenyang HV Switchgear Co. | And 2 more authors.
Gaoya Dianqi/High Voltage Apparatus | Year: 2013

New Northeast Electric (Shenyang) HV Switchgear Co., Ltd. developed the 1100 kV SF6 UHV circuit breaker independently for the construction of 1000 kV power grid in China. In this paper, the structure and technical parameters of the circuit breaker are introduced. The selection of the parallel capacitors, the insulation and interruption performances of the main arc-extinguishing chambers, the insulation performance and action principle of the closing resistive switch, as well as the layout, insulation and thermal capacity of the closing resistors, are analyzed. In addition, the items of the corresponding type test are described.

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