新型SVC无功补偿装置的研究及实现

Study and Realization of New Static Var Compensator Reactive Power Compensation Device

为了研究高性能的SVC无功补偿装置,针对TSC+TCR型SVC在无功补偿的时候不仅能够详细精确地控制无功电流,同时,可以在系统产生的较为严重的谐振时退出所有补偿电容器的优点,本文分析了单相TCR工作原理,三相TCR三角形联结的谐波及其抑制措施,为了提高大扰动时补偿器运行的灵活性以及减少稳态运行时的损耗,开发了TSC+TCR型SVC补偿器;文中给出了此款SVC的试验及其结果波形,该TSC+TCR型SVC不仅能够补偿系统三相不平衡、实现无功功率的无级平滑调节,而且能够在过负荷情况下保护装置,本文对无功补偿器的工程设计及应用具有一定的指导意义。

In order to find the high performance SVC reactive power compensation device,in view of the advantages of SVC (TSC+TCR) which can not only accurately control reactive cur- rent in detail,but also withdraw all compensation capacitors as the system be more serious resonant,the principle of single-phase TCR and the harmonics as well as suppression measures of three-phase triangle linking TCR are analyzed in this paper.In order to raise the flexibility as serious disturbance happened,and reduce the wear and tear in steady-state operation of compensa- tion,the type of TSC+TCR compensation is developed.Then the experimental realization and results waveform of the SVC are given.This type of TSC+TCR compensation can not only com- pensate the unbalance of three-phase systems and adjust reactive power smoothly,but also protect the compensator as overload appeared.This paper dues certain significance to the actual design and application of the reactive power compensation.