比例谐振控制的配电网有源全补偿消弧方法.

Aiming at the problem of large residual current in single-phase grounding fault of resonant grounding system of distribution network, an active arc extinction scheme based on proportional resonant controller is proposed. From the perspective of tracking accuracy of the control strategy, this paper makes a comparative analysis of PR control and the generally adopted traditional PI control and feedforward PI control strategy, it is found that the traditional PI and feedforward PI control strategies have large steady-state errors in tracking sinusoidal signals, while the steady-state error under PR control is almost zero. Matlab is used for modeling and simulation, the results show that the PR control strategy can improve the compensation accuracy of residual current and realize reliable arc quenching. [ABSTRACT FROM AUTHOR]