智能变电站跨间隔闭环检修模型的研究

Research on Cross-interval Closed-loop Maintenance Model of Intelligent Substation

针对跨间隔检修时结构相对较单一,分散调试工作量大,重复性高的问题,构建基于解列控制的智能变电站跨间隔闭环检修模型。构建的智能变电站加权复杂网络模型的最佳解列断面,是有功潮流与无功潮流异常波动最小化的解列断面,将其作为目标函数,创新具有连通性约束的蚁群改进算法,求解后完成解列控制;解列控制下,由智能变电站跨间隔闭环检修模型识别故障信号,并切断电源实现跨间隔闭环检修。试验结果显示间隔均可同时被闭环检修,电压不出现异常波动,可提取对智能变电站影响最小的解列断面。

In consideration of problems of relatively simple structure,large workload of decentralized debugging,and high similarity during cross-interval maintenance,a cross-interval closed-loop maintenance model of intelligent substation based on splitting control is constructed.The optimum splitting section of the weighted complex network model of intelligent substation is constructed,which minimizes the abnormal fluctuation of active power flow and reactive power flow.As the objective function,the improved ant colony algorithm with connectivity constraints is innovated,and the splitting control is performed after the solution.Under splitting control,the fault signal is identified by the cross-interval closed-loop maintenance model of intelligent substation,and the power supply is cut off to achieve cross-interval closed-loop maintenance.The experimental results show that the system′s intervals can be closed-loop overhauled at the same time,the voltage does not fluctuate abnormally,and the splitting section with the least impact on intelligent substation can be extracted.