摘要
针对静止同步补偿器(Static Synchronous Compensator,STATCOM)稳态投入运行及故障暂态过程时产生的谐波分量,利用Matalab/Simlink仿真分析了各种情况下STATCOM产生的谐波含量和谐波畸变率,并重点研究了STATCOM的不同安装位置和故障点位置不同时所产生的谐波对测量电压和测量电流的影响程度。仿真结果表明,当STATCOM投入运行时,其产生的谐波分量将对保护安装处的测量电压和电流产生不同程度的影响。且谐波畸变率随着STATCOM的安装位置和故障位置的不同而变化。当STATCOM安装在线路中间时,谐波分量对,测量电压的影响最小。反方向出口发生故障时的电压谐波分量对测量电压的影响最大。因此,需要采取相应的措施,减小STATCOM产生的谐波分量对测量电压的影响,以保证保护的可靠性。
In allusion to harmonic waves produced when STATCOM are put on operation steadily or in the transient failure procedure, this paper analyses all kinds of harmonic content and percent harmonic distortion which are produced by STATCOM through Matiab/Simlink simulation, and the effect of measuring voltage and measure current on harmonic waves of different setting and fault point place of STATCOM is mainly studied. The simulation results show the different influences on measuring voltage and measuring current at the relay installed place by harmonic waves when STATCOM are put on operation. With the installation of STATCOM and fault locations are different, the harmonic distortion rate is different. When the STATCOM installed in the middle of the line, harmonic components would minimal impact on the voltage measurement. But, when there occurs fault at the opposite direction, harmonic components would greatest impact on the voltage measurement. Therefore, it＇s need to take appropriate measures to reduce the harmonics generated by STATCOM influence on the voltage measurement, to ensure the reliability of protection.
出处
《电力科学与工程》
2011年第11期43-48,共6页
Electric Power Science and Engineering
