变电站高压设备感应放电电能损耗的场路结合分析

Field-circuit Combined Analysis of Power Loss from High-voltage Apparatus Inductive Discharge in Substation

文中从变电站运行实际出发,描述了变电站高压设备的感应放电现象。针对变电站高压设备存在的感应放电现象,定性的分析了感应放电的产生机理与微观发展过程,以隔离开关为研究对象利用Ansoft Maxwell电磁场仿真软件解得了感应放电的边界条件。通过对放电电路网络的分布参数进行计算,利用Oracle PSpice电路仿真软件解得了单个感应放电脉冲所带来的的电能损耗,以电场与电路仿真相结合的方式,参考变电站实际运行规律及社会用电量等统计数据,估算出变电站高压设备感应放电所产生的电能损耗。

Derived from practical operation of power substation, the phenomenon of high voltage apparatus inductive discharge is illustrated. The initiating principle and microcosmic proceeding of inductive discharge is qualitatively demonstrated. A disconnecting switch is set as researching model and Ansoft Maxwell is utilized to determine the boundary conditions of inductive discharge. Distribution parameters are introduced to form a circuit model for quantitative estimation of electric power loss. Using Oracle PSpice, the power loss is accurately estimated. Utilizing field-circuit combined analysis, referring the practical operation rules of power substation, national power consumption and relative statistical data, the total power loss of inductive discharge is concisely estimated.