| Based on several common types and setting principle of neutral grounding mode on medium voltage auxiliary power system, this paper first calculate the K2/K3 project medium voltage auxiliary power system capacitance current value under different operation modes, and then according to the calculated results of the project focuses on the four solutions, through the analysis and calculation, respectively, to verify the feasibility of the four kinds of grounding scheme, and comprehensive comparison of the four schemes, and combining with other domestic nuclear power plant the setting of neutral point grounding way, finally proposed the K2/K3 project medium voltage system neutral grounding mode and the proposals on subsequent projects. |
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