低压电力电容器投入过程的暂态分析

Transient Analysis of Switching Low Voltage Power Capacitors

以低压普通型和抑制谐波型的分相补偿电力电容器为研究对象,考虑系统阻抗和负载阻抗等因数构建分补型低压电力电容器等效单相数学模型,进而分析其投入时的暂态过程,得到分相补偿电力电容器投入的最佳理想条件,为电力电容器的智能控制提供理论支撑。最后,通过算例、仿真以及试验验证了上述分析的正确性。

The low voltage common type and the harmonic suppression type split-phase compensation power capacitors were taken as research target.Considering the factors of system impedance and load impedance,the equivalent single-phase mathematical model of the low voltage split-phase power capacitors was established,and then the transient process of switching the capacitors was analyzed.The optimum ideal condition for switching the capacitors was obtained,which provided the theoretical support for the intelligent control of the power capacitors.Finally,the correctness of the above analysis was verified by the calculation examples and simulation.