of the fast tracking performance and detection precision of OVS, the relationship between the closed-loop gains and the optimal ranges of the values of control parameters are derived. Based on the theoretical analysis, we have designed a hardware circuit to extract the closed-loop error with high precision, and wrote a control algorithm to optimize the dynamic performance. The experiment results demonstrate the effectiveness of our proposed method, and the dynamic performance of theOVSsystem has been greatly improved while the high detection precision iskept.The result of ourre search is of significance to the application of OVSs in electric power systems