基于粒子种群的中压配电网过电压保护系统

Overvoltage protection system of medium voltage distribution network based on particle population

为抑制电压突变特性,消除突变位置处选相电量对中压配电网造成的不利影响,设计基于粒子种群的中压配电网过电压保护系统。将环网柜结构置于10 kV旁路作业支系中,再以快插处理的方式,完成配电网环境的接入口布局,实现中压配电网过电压保护系统的硬件应用环境搭建。在此基础上,检测配电网孤岛电压,借助已知的电压突变量选相结果,计算过电压熔断量的具体数值,完成基于粒子种群的中压配电网保护策略研究,结合相关硬件设备结构,实现中压配电网过电压保护系统的顺利应用。实例分析结果表明,在不同电网支路中,粒子种群算法均能有效抑制传输电压的突变行为,在消除选相电量对于中压配电网的负面影响方面,具有较强的实用性价值。

In order to suppress the sudden change of voltage and eliminate the adverse effect of phase selection power at the sudden change position on medium voltage distribution network,an overvoltage protection system based on particle population is designed.The ring network cabinet structure is placed in the 10 kV bypass operation branch,and then the access port layout of the distribution network environment is completed by means of fast insertion processing,thus realizing the hardware application environment construction of the overvoltage protection system of the medium voltage distribution network.On this basis,the isolated island voltage of distribution network is detected,and the specific value of over⁃voltage fuse is calculated with the aid of the known phase selection result of voltage abrupt change,so as to complete the research on protection strategy of medium⁃voltage distribution network based on particle population,and realize the smooth application of over⁃voltage protection system of medium⁃voltage distribution network with the related hardware structure.The results of case analysis show that the PSO can effectively suppress the abrupt change of transmission voltage in different power grid branches,and has strong practical value in eliminating the negative influence of phase selection power on medium voltage distribution network.