范〓宏, 周嘉新, 刘巧宏, 朱佩琳.MMC HVDC谐波特性分析[J].水电能源科学,2018,36(10):190-193
MMC HVDC谐波特性分析
Harmonic Analysis of MMC HVDC
  
DOI:
中文关键词:  柔性直流输电  模块化多电平换流器  PSCAD建模  谐波传变特性  交直流系统
英文关键词:flexible direct current transmission  module multilevel converter  PSCAD modeling  harmonic characteristics  AC DC system
基金项目:国家自然科学基金项目(51037104)
作者单位
范〓宏, 周嘉新, 刘巧宏, 朱佩琳 上海电力学院 电气工程学院 上海 200090 
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中文摘要:
      为分析以模块化多电平换流器为主要工作元件的高压直流输电系统(MMC HVDC)的传变特性,基于模块化多电平换流器(MMC)工作原理,利用开关函数法并引入谐波调制比概念,从理论上分析了MMC HVDC的传变特性,并通过仿真分析验证了理论的正确性。结果表明,整流侧交流系统注入h次正序谐波时,在直流侧会生成h-1次零序谐波,在逆变侧交流系统会生成h次正序谐波和h-2次负序谐波;整流侧交流系统注入h次负序谐波时,在直流侧会生成h+1次零序谐波,在逆变侧会生成h+2次正序谐波和h次负序谐波。
英文摘要:
      In order to analyze the transmission characteristics of a high voltage direct current transmission system (MMC HVDC) using a modular multilevel converter as the main working element, based on the working principle of modular multi level converter (MMC), this paper uses the switching function method and introduces the concept of harmonic modulation ratio, and theoretically analyzes the transmission characteristics of MMC HVDC. And then the correctness of the theory is verified by the simulation analysis. The results show that when the AC side system is injected with h order positive sequence harmonics, h-1 order zero sequence harmonics are generated on the DC side, h order positive sequence harmonics and h-2 order negative sequence harmonics are generated on the AC side of the inverter system; When the negative sequence harmonics of the h order are injected by the AC side system, h+ 1 order zero sequence harmonics are generated on the DC side, and h+2 order positive sequence harmonics and h order negative sequence harmonics are generated on the inversion side.
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