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METHOD AND DEVICE FOR DETECTING SHORT-CIRCUIT CAPACITY OF GRID-CONNECTED POINT OF WIND GENERATING SET
METHOD AND DEVICE FOR DETECTING SHORT-CIRCUIT CAPACITY OF GRID-CONNECTED POINT OF WIND GENERATING SET
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机译:风力发电机组并网点短路能力的检测方法及装置
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摘要
The present disclosure discloses a method and apparatus for detecting a short-circuit capacity at a grid connection point of a wind turbine. The method includes: modulating, when a converter is in a grid-side no-load modulation state and a power grid is in a short-circuited state with respect to the converter, a reactive power reference value and a braking power reference value of the converter; collecting a modulated three-phase voltage signal and a modulated three-phase current signal at the grid connection point of the wind turbine; and obtaining, according to the modulated three-phase voltage signal and the modulated three-phase current signal at the grid connection point of the wind turbine as well as a rated line voltage at the grid connection point of the wind turbine, the short-circuit capacity at the grid connection point of the wind turbine. With the technical solutions in embodiments of the present application, it is possible to implement effective detection of a short-circuit capacity at a grid connection point of a wind turbine.
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