摘要
文中介绍了电压型STATCOM二重逆变电路结构,运用了PSCAD4.2.0对该类型STATCOM的电力系统进行仿真,分析了STATCOM直流侧电容参数对电网电流谐波含量的影响,得出了电网电流谐波含量随电容值变化的规律。着重分析了2次、11次和13次谐波与电容量的关系,提出了根据降低STATCOM出口端电流的谐波含量和保持直流侧电容电压波动幅值在一定范围内的要求来选择其电容值的方法。
This paper introduces the voltage type double inverter STATCOM circuit structure.Then the authors use the PSCAD4.2.0 to carry on simulation analysis for the power system which contains this kind of STATCOM,and the effect of DC capacitor on system harmonic current and its voltage fluctuation amplitude is analyzed.Obtained the regular patterns between the DC-link capacitance of STATCOM and the source current harmonic content.And mainly analysis the relationship between the 2nd,11th,13th harmonics and the electric capacity parameter.At the same time,the authors according to the obtained variation patterns,which is aiming at reducing the current harmonic content of STATCOM outlet and keeping voltage fluctuation amplitude of DC capacitor within a certain range.
出处
《微计算机信息》
2010年第7期188-189,228,共3页
Control & Automation
