【摘要】 为解决无功功率不能远距离传输的问题,提出了在大电网电压稳定分区的基础上合理地配置无功源。首先,将分区点设定为电压稳定临界状态点,采用聚类分析的方法计算分区结果。然后,利用节点的无功裕度在电网拓扑中的分布,将各分区内无功裕度最小的节点作为无功源配置点。最后,采用Matlab软件对IEEE30节点系统进行了仿真,分别将所提方法与"未分区、直接按照无功裕度大小配置"的方法作比较。结果表明,该方法在应对临界状态时系统的无功控制更加可靠,故其对于提高系统电压的稳定性效果更好。更多还原

【Abstract】 In order to solve the problem that reactive power can′t be transported for long distances,a thought was proposed that it was best to allocate reactive power sources based on critical point of voltage stability area.Firstly,the partition point was fixed at the critical point of voltage stability,which could make sure of the stability of networks under the partition control.Secondly,the reactive power margin of nodes was computed,and the minimal reactive power margin of each area was defined as the location of reactive power sources.Then,it was applied on IEEE30-nodes system by using Matlab,and compared with the method also using reactive power margin without partitioning with the above thought.The simulation results indicate that the analysis raises the reliability of volt/var control better when facing with the critical state,and improves the voltage stability of system better.更多还原