分布式电源接入下配电网运行方式多目标优化

Multi-objective Optimization of Distribution Network Operation Mode with Distributed Power Supply Access

电网运行过程中选择的参数不合理,导致电网的无功损耗较高,因此提出分布式电源接入下配电网运行方式多目标优化方法。将配电变压器间负载率平衡度和损耗程度作为分布式电源接入下配电网运行方式优化指标参数,采用二进制粒子群优化算法实现对配电网运行方式指标参数的寻优;结合惯性权重的作用强度对可执行的空间范围内粒子寻优速度进行设置,将负载率平衡度最大值、损耗程度最小值作为配电网运行方式优化目标,并将寻优结果作为最终配电网运行方式多目标优化参数。测试结果表明,应用该方法后,配电网的输出功率与实际负荷具有较高的拟合度,无功损耗低于70.0 kW,实际应用效果好。

If the parameters selected during the operation of the power grid are unreasonable,it will lead to high reactive power loss of the power grid.Therefore,a multi-objective optimization method for the operation mode of distribution network under distributed power access is proposed.The load rate balance and loss degree between distribution transformers are taken as the optimization index parameters of the distribution network operation mode under distributed power access,and the binary particle swarm optimization algorithm is used to optimize the index parameters of the distribution network operation mode.Combined with the action intensity of inertia weight,the particle optimization speed within the executable spatial range is set,and the maximum value of load rate balance and the minimum loss degree are taken as the optimization goals of the distribution network operation mode,and the optimization results are used as the multi-objective optimization parameters of the final distribution network operation mode.The test results show that after applying this method,the output power of the distribution network has a high fitting degree with the actual load,and the reactive power loss is less than 70.0 kW,and the actual application effect is good.