双馈风机网侧变流器SVG运行状态研究  

Study on SVG Operation State of Double Fed Wind Turbine Grid Side Converter

作　　者：尚海仓 余健明[1] 尹海霞[1] 

机构地区：[1]西安理工大学自动化学院,陕西西安710048

出　　处：《陕西电力》2016年第3期6-10,57,共6页Shanxi Electric Power

摘　　要：电网发生电压跌落故障后,双馈风机网侧变流器运行在静止无功发生器状态下的无功出力研究,对于提高机组并网运行能力和电力系统电压稳定性,以及减少风电并网时无功补偿设备的投资具有重要意义。分析了双馈风机网侧变流器的无功调节能力,并参照德国E.0N公司对电压跌落故障时无功电流补偿的标准,仿真并分析了双馈风机在连续不同程度的故障情况下,通过控制网侧变流器故障后的运行方式,改变其所产生的无功功率,并与只有定子侧产生无功的情况进行了对比分析,结果表明,在风机并网系统发生电压跌落故障时,网侧变流器运行在SVG工作方式下,能够向系统注入一定的无功功率,并能一定程度上提高并网系统的稳定性,有效减少无功补偿设备的投资。Study on the reactive power output of the double fed induction generator network side converter under the condition of SVG is of important significance for improving the operation ability of the unit and power system voltage stability,and reducing the investment of reactive power compensation equipment in the wind power.Based on the analysis of the doubly fed wind machine side converter＇s reactive regulation ability,with reference to the reactive current compensation standard of Germany＇s E.ON company,doubly fed wind turbine in the continuous varying degrees of fault conditions is simulated and analyzed,by controlling the operation mode of the grid side converter,and changing the reactive power generated by the converter.The results show that the grid side converter in SVG operating mode can provide a certain reactive power to the system,improve the stability of the grid system,effectively reduce the investment of reactive power compensation equipment.

关 键 词：双馈感应发电机 无功功率极限 网侧变流器 SVG控制 

分 类 号：TM614[电气工程—电力系统及自动化] TM712