Coordinated optimization method for suppressing transient overvoltage caused by HVDC commutation failure considering large wind power integration

Abstract

In order to suppress the sending end transient overvoltage caused by HVDC commutation failure considering large wind power integration, this paper proposes a coordinated optimization method for the control parameters of DC and wind power, which can suppress the sending end transient overvoltage and ensure the performance of the DC control system. By analyzing the mechanism of DC and wind power control parameters affecting the sending end transient overvoltage, and studying the influence of control parameters on the performance of the DC control system, a multi-objective and multi-equipment coordination optimization model of the HVDC transmission system considering large wind power integration is constructed. The multi-objective adaptive differential evolution algorithm is used to realize the coordinated optimization of DC and wind power control parameters based on PSCAD simulation joint invocation. Finally, through simulation and optimization in different cases, it is found that the multi-objective parameter optimization has more obvious advantages than single-objective optimization in the case of weak receiving end power grid. In addition, it is concluded that the same control parameters can be used in different wind power penetration scenarios to achieve the purpose of suppressing transient overvoltage, which verifies the effectiveness and accuracy of the method proposed in this paper.