Control method for substation VQC of considering security of variable medium-voltage side voltage
A control method and safety technology, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve the problem of inability to effectively ensure the safety of the busbar voltage on the medium voltage side of the three-winding transformer.
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[0066] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto.
[0067] Such as figure 1 , a substation VQC control method considering the voltage safety of the substation side, comprising the following steps:
[0068] (1) Collect the current gate reactive power Q of the three-winding transformer H , main transformer medium-voltage side bus voltage V M , main transformer low-voltage side bus voltage V L , main transformer low-voltage side reactive power compensation equipment switching and main transformer gear information, where Q H Defined as the reactive power delivered from the high voltage side of the main transformer, Q H Positive means sending reactive power to the underlying grid, Q H Negative means sending reactive power back to the upper grid;
[0069] (2) Set Q HThe upper and lower li...
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