考虑多节点条件约束的柔直系统故障限流器与断路器优化配置方法

Firstly, the numerical calculation optimization model of power flow and fault current suitable for multi-node flexible DC system is established, and its accuracy is verified in the three-node simulation model. Subsequently, the constraints and objective function are set up, the PSO(Particle Swarm Optimization) algorithm is used to establish the mathematical model of optimal configuration of fault current limiter and circuit breaker in multi-node flexible DC system. Then the optimization solution is carried out in a three-node ring network, and the results are configured to the simulation model to test its current limiting effect, and the accuracy of the proposed optimized configuration method is verified. Finally, the optimal configuration of fault current limiter and circuit breaker for a 11-node flexible DC system is carried out by the proposed multi-objective PSO algorithm, and the results are compared with the results of multi-objective genetic algorithm. The results show that the proposed optimal configuration method has high universality and can complete the low cost configuration of fault current limiter and circuit breaker in multi-node flexible DC system.