Circuit for preventing frequent switching of dynamic voltage recovery device and control method
The invention belongs to the technical field of intelligent power distribution, provides a circuit for preventing frequent switching of a dynamic voltage recovery device and a control method, and solves the problem that a load cannot work normally due to frequent action of the dynamic voltage recove...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the technical field of intelligent power distribution, provides a circuit for preventing frequent switching of a dynamic voltage recovery device and a control method, and solves the problem that a load cannot work normally due to frequent action of the dynamic voltage recovery device DVR. The resistance-capacitance branch comprises a second thyristor, and the controller is used for judging whether the sampled power grid voltage is normal or not and sending a command to the second thyristor; the second thyristor is used for receiving a command from the controller to input or cut off the resistance-capacitance branch, specifically, when the voltage of the power grid is normal, the second thyristor is cut off, and the resistance-capacitance branch is separated from the power grid at the moment; when the voltage of the power grid is abnormal, the second thyristor is switched on, the resistance-capacitance branch is connected into the power grid at the moment, the resistance-capacitance br |
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