摘要
针对矿热炉负荷产生的谐波问题,给出了采用ETAP软件的负荷谐波影响评估方法。将矿热炉负荷谐波特性添加到用户自定义谐波源,搭建了谐波分析模型,进行谐波潮流计算,评估公共连接点母线的谐波水平。依据谐波评估结果,设计滤波器。利用ETAP的谐波频率扫描,找出滤波器投入后系统的并联谐振点,对滤波器投入后的效果进行谐波潮流分析。结果表明,所设计的滤波器达到了预期的滤波效果,仿真计算结果和实际测试基本吻合。利用ETAP软件进行谐波仿真分析和谐振分析,可以辅助进行滤波器设计,能避开系统谐振点,有效减少电网的谐波污染。
This paper addresses the harmonic problems caused by submerged arc furnace, and presents the assessment method of harmonic impact based on ETAP software. The load harmonic characteristic is added to the user-defined harmonic source, and the model of the harmonic analysis is then established; the harmonic effect on the bus of the point of common coupling is assessed by the harmonic simulation analysis. A filter is designed for the power consumer generating harmonic based on the evaluation results. The system frequency scanning is conducted on the model by ETAP software, and the parallel resonance position is obtained when the filter is put into the system. Finally, the filtering effect is analyzed by the harmonic flow analysis module. The results show that the expected filtering effectiveness is gained after the filter is put into system, and there is almost an consistency between simulation results and those obtained by field testing. The ETAP software can be used to make harmonic simulation and resonance analysis, and it can also help to avoid the resonance position by assisting the filter design to reduce the harmonic pollution effectively.
出处
《电网与清洁能源》
2013年第1期45-49,共5页
Power System and Clean Energy
关键词
谐波分析
频率扫描
ETAP
滤波器
并联谐振
harmonic analysis
frequency scanning
ETAP
filter
parallel resonance
