面向主动探测式保护的变流器正交控制策略

To avoid interference between the additional control strategy of active detection protection and the original basic control strategy of the converter，an orthogonal control method is proposed. The basic control strategy of the converter in the new power system is analyzed. Based on the characteristics of space vector pulse width modulation using positive-sequence components to calculate space vectors，an additional control strategy based on negative-sequence components is designed to ensure mutual decoupling between basic control system and additional control system. By using the different signal frequency bands processed by the basic and additional control strategies，a pre-filtering link is introduced，and an orthogonal control strategy for conventional application scenarios is proposed. Then，the generation method of pulse signals is studied，and the applicable scenarios of the additional control strategy are analyzed. The impact of detection signal generation on primary system and traditional protection is analyzed.