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Generator opening voltage action

The opening voltage of the generator can know whether the high-voltage system is grounded by detecti

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The opening voltage of the generator can know whether the high-voltage system is grounded by detecting the voltage on the opening triangle, which is called grounding monitoring in the system. The static rotor winding of the motor is open circuit. Adjust the input voltage at the stator winding side. When the voltage of the rotor winding is converted to the rated voltage of the stator, the voltage at the rotor side is the rotor opening voltage. In case of single-phase grounding fault in the system, the phase voltage of the primary winding of the voltage transformer is zero, the other two phases increase by 3 times, and the phase voltage of the corresponding secondary winding and residual voltage winding also increases by √ 3 times. In the three-phase winding of residual voltage winding, one phase voltage is zero.

Function of generator

The three-phase five column voltage transformer of generator is mainly used for high-voltage equipment. Its working purpose is to monitor whether the phase voltage and line voltage of operating equipment meet the operating indicators.

Another function of voltage transformer is to provide a working voltage for the operation circuit and metering circuit of high-voltage equipment to ensure the safety of operators and the accuracy of high-voltage metering.


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