和应涌流影响因素仿真分析及应对措施研究

为解决和应涌流造成变压器差动保护误动作的问题,通过分析和应涌流的产生机理,结合现场实际系统的运行情况搭建模型,对产生变压器和应涌流的影响因素进行仿真研究,提出减小和应涌流的相应防治措施。应用结果表明:加强电力系统网架结构建设,合理选择空投变压器时机,消除剩磁等措施可减少和应涌流产生,防止变压器差动保护误动作。

Simulation analysis on influence factors of sympathetic inrush

In order to solve the problem of sympathetic inrush causing by differential protectionmisoperation of transformer, through analyzing the mechanism of sympathetic inrush, combining withthe power system actual operation condition, establishes the model to simulate and researche theinfluence factors of bringing transformer sympathetic inrush, puts forward the correspondingcountermeasures of reducing sympathetic inrush. The application result shows that the measures suchas to strengthen the construction of power system frame structure, rationally to choose the operationchance of no-load transformer and to eliminate remanence, can reduce the sympathetic inrush to takeplace, prevent transformer differential protection device maloperation.