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Method and System for AC Line Distance Protection in AC/DC Hybrid Power Grid, and Storage Medium
Method and System for AC Line Distance Protection in AC/DC Hybrid Power Grid, and Storage Medium
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机译:AC / DC混合动力电网和存储介质中交流线路距离保护的方法和系统
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摘要
The disclosure relates to a method and system for AC line distance protection in AC/DC hybrid power grid, and storage medium. The method comprises: collecting the operation parameters of inverter-side converter, AC parameters, converter bus voltage, current at distance protection installation and operation parameters of the smoothing reactor of inverter station; determining the conduction state of the inverter-side converter according to the operation parameters of the inverter-side converter; determining the current fed into the AC system from the DC system corresponding to the conduction state according to the operation parameters of the inverter-side converter, the operation parameters of the smoothing reactor of the inverter station and the converter bus voltage; determining the virtual fault location and virtual transition resistance according to fault types and AC parameters; controlling the corresponding protection device to perform the protection action according to the virtual fault location and virtual transition resistance.
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