APPLICATION OF TBP TO THE SUPPRESSION OF SWITCHING OVERVOLTAGE IN MEDIUM VOLTAGE MOTOR

Theoretical analysis shows that the switching overvoltage mainly exists between phase to phase of medium voltage motor,whilst the present protection is connected in Y mode,therefore,the phase to neutral insulation can be protected,but the phase to phase insulation can not be protected.For this reason,this paper presents the application of TBP to the suppression of overvoltage.