• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2015, Vol. 36 ›› Issue (5): 7-13.doi: 10.3969/j.issn.1000-7229.2015.05.002

• 理论研究 • 上一篇    下一篇

基于模块化多电平换流器的限流式统一潮流控制器的设计

周洋,江道灼,陈峰,唐伟佳,胡鹏飞,尹瑞   

  1. 浙江大学电气工程学院,杭州市 310027
  • 出版日期:2015-05-01
  • 作者简介:周洋(1991),男,硕士研究生,主要研究方向为柔性直流输电与海上风电场并网; 江道灼(1960),男,教授,主要研究方向为交直流电力系统运行与控制技术、电力电子在电力系统应用技术、电力系统现场智能测控技术; 陈峰(1990),男,硕士研究生,主要研究方向为限流器及柔性交流输电技术; 唐伟佳(1991),女,硕士研究生,主要研究方向为海上风电场并网技术; 胡鹏飞(1987),男,博士研究生,主要研究方向为柔性交流输电和柔性直流输电; 尹瑞(1990),男,博士研究生,主要研究方向为柔性交流输电和分布式发电。
  • 基金资助:

    国家高技术研究发展计划项目(863计划)(2012AA050402); 浙江省重点科技创新团队项目(2010R50004)。

Unified Power Flow Controller Design with Fault Current Limiting Based on Modular Multilevel Converters

ZHOU Yang, JIANG Daozhuo, CHEN Feng, TANG Weijia, HU Pengfei, YIN Rui   

  1. Zhejiang University, College of Electrical Engineering, Hangzhou 310027, China
  • Online:2015-05-01
  • Supported by:

    Project Supported by the National High Technology Research and Development of China (863 Program)(2012AA050402);  Major Project on Science and Technology Innovation Team, Zhejiang Province (2010R50004).

摘要:

传统基于电压源换流器(voltage source controller,VSC)的统一潮流控制器(unified power flow controller,UPFC)开关频率高、输出电压谐波大、电压等级低,同时在运行过程中也有遭受短路故障的可能性和风险,特别是在大容量高电压的场合下,极易造成器件的损坏。将模块化多电平换流器(modular multilevel converter,MMC)引入UPFC中,同时改进MMC的控制策略以适应所提拓扑的要求,同时由于MMC的引入,短路故障的风险进一步加大,因此在MMC-UPFC的基础上设计了限流模块,该限流模块能在系统短路故障下有效地抑制短路电流,且该限流器在正常工作情况下并不会给线路增加负担。整个UPFC的拓扑具有模块化程度高、谐波小、容量扩展、短路快速限流等特点,该文所设计的拓扑增加了系统的可靠性、安全性和经济性。

关键词: 柔性交流输电系统, 统一潮流控制器(UPFC), 故障限流, 模块化多电平换流器(MMC)

Abstract:

 Traditional unified power flow controller (UPFC) based on voltage source controller (VSC) has high switch frequency, obvious voltage harmonic and lower voltage level. Meanwhile, UPFC has big risk and possibility to suffer the short circuit fault, which can cause the damage to device, especially in the situation of large capacity and high voltage. Thus, this paper applied modular multilevel converter (MMC) in the UPFC, and improved the control strategy of MMC to meet the requirements of the proposed topology, but the system might suffer larger risk of short circuit fault. So this paper also designed the current limiting module based on MMC-UPFC, which could effectively restrain the short-circuit current in the short circuit fault, without increasing any burden to the system in the normal condition. In all, the topology of entire UPFC system has advantages of higher modularity level, smaller harmonic wave, capacity extension, rapid current-limiting in short circuit fault and so on, which can increase systems reliability, safety and economy for the designed topology.

Key words: FACTS, unified power flow controller (UPFC), fault current limiting, modular multilevel converter(MMC)

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