电力系统故障时静止无功发生器的运行分析

静止无功发生器 (ASVG)在电力系统投运之后 ,为了协调装置自身安全及其对系统贡献二者之间的关系 ,必须深入研究系统在故障情况下对 ASVG的影响。用对称分量法给出了电力系统故障期间 ASVG的等效电路。对电路中的主要参数进行了分析。在理论分析的基础上 ,指出了在对称调制方式下 ,通过控制器可以调节流过装置的正序电流以及直流侧电容电压的直流分量 ,而流过装置的负序和零序电流以及直流侧电压的交流分量和装置主电路的参数及其变压器与系统的连接方式有关。

Operation analysis of advanced static var generator under power system fault conditions

Analysis the advanced static var generator (ASVG) in a power system should not only include the ASVG's contribution to the power system, but also the effect of the system on the ASVG. This paper gives the equivalent circuit of an ASVG for system faulty conditions using the symmetry component method. The circuit parameters are then analyzed. The calculations point out that, under symmetrical modulation of the ASVG, the controller can regulate the positive sequence current and the DC component of the capacitor voltage on the DC side. The negative and zero sequence currents and the AC component of the capacitor voltage are determined by the main circuit parameters and the transformer connection pattern of the ASVG to the power system.