基于智能电网调度控制系统的配网合环操作研究分析

Research on closed-loop operation of distribution network based on smart power grid dispatch and control system

为保障电网安全运行,必须对配网线路合环时冲击电流大小进行详细分析和先验计算。目前国内外一般采用建立等值模型方式进行计算,其模型构架,参数设置等均与实际电网存在一定偏差,且无法对当前潮流情况进行考虑,同时该类方法对网架结构复杂的电网不能进行有效分析,因此无法满足实际需求。本文基于智能电网调度控制系统(D5000)配网合环计算分析功能,能够实现任一规模电网下的配网合环电流实时计算,提高了电网抗风险能力,当出现紧急状况时,能为配网合环操作提供理论依据和应对措施。建立10kV线路合环操作跨110kV、220kV电压等级两种典型模型,计算合环稳态电流和瞬时最大冲击电流,同时与实际测量值进行对比分析,验证该功能的计算的准确性和实用性。

In order to ensure the safety operation of power grid.It’s necessary to make a detailed analysis and a prior calculation of the impact current.It usually establishes equivalent model method to calculate the result.But this method haven’t considered the real situation of the model and parameters,at the same time,the method can’t get structure of complex power grid.The paper based on the smart grid dispatch and control system(D5000)distribution network system to calculate the impact current.It establishes two typical model which includes110kV,220kV voltage class.The result will compare with the actual measurement at the same time to ensure the veracity of the result.