Research on Optimization of High Voltage Cable Circulating Current Suppression Based on Short Circuit Current Guidance

In this paper, an optimization method of high voltage cable circulating current suppression based on short-circuit current guidance is proposed to solve the problem that the current method cannot take into account the circulating current suppression under normal working conditions and the current suppressor protection in case of single-phase short-circuit fault. Based on the theoretical model, the line is divided into current suppression branch and reserved branch, and the parameters of each branch current suppressor are set, and the electromagnetic simulation model of multiple operating conditions is established to compare and verify the performance characteristics of the modified line. The results show that the optimization method proposed in this paper can reduce the circulating current level of the line and improve the ability of the current suppressor to deal with the fault. It has the characteristics of low cost and high investment efficiency and can provide theoretical reference for the actual line application.