南京西环网串联侧换流器谐波特征分析  

The Harmonic Characteristics of Series Converter in Nanjing Western Grid

作　　者：史明明 费骏韬 吕振华 张宸宇 

机构地区：[1]国网江苏省电力公司电力科学研究院,江苏南京211103

出　　处：《电力电子技术》2018年第1期36-38,共3页Power Electronics

摘　　要：分析了采用模块化多电平换流器(MMC)结构的统一潮流控制器(UPFC)的谐波特性,推导了MMC子模块电压波动与网侧输出电压谐波之间的关系。分析表明,电容电压的2次谐波波动频率与换流器输出电压的3次谐波分量密切相关。结合UPFC现场测试数据,分析对比UPFC运行前后串联线路的零序分量变化规律,线路中3次谐波分量大小可为串联变压器性能的评价提供参考依据。The harmonic characteristics of unified power flow controller（UPFC） with multi-level modular converter（MMC） structure is analysed, the relationship between submodule capacitor voltage variation of MMC and the harmonic of grid side output voltage is deduced.The analysis indicates that second-harmonic variation frequency effects third-harmonic in MMC output voltage,which injected zero-sequence current to grid.The field-test data shows that third-harmonic generated when UPFC put into operation,and when UPFC shut down,the third-harmonic disappeared.The third-har- monic change rule can be used in assessment of series transformer.

关 键 词：变换器 控制器 谐波特性 

分 类 号：TM46[电气工程—电器]