中国电力 ›› 2016, Vol. 49 ›› Issue (1): 119-126.DOI: 10.11930/j.issn.1004-9649.2016.01.119.08

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直流融冰及无功功率补偿系统研究

杨刚1,杨奇逊12,张涛2,王皆庆2,梅红明2,刘树2,文晶2   

  1. 1. 华北电力大学 新能源电力系统国家重点实验室,北京 102206;
    2. 北京四方继保自动化股份有限公司,北京 100084
  • 收稿日期:2015-05-25 出版日期:2016-01-18 发布日期:2016-02-04
  • 作者简介:杨刚(1986—),男,内蒙古赤峰人,博士研究生,从事电力电子技术在电力系统中的应用,电力电子变换器控制及保护技术等研究。

Research on DC De-icing and Reactive Power Compensation System

YANG Gang1, YANG Qixun1,2, ZHANG Tao2, WANG Jieqing2, MEI Hongming2, LIU Shu2, WEN Jing2   

  1. 1. State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University,Beijing 102206, China;
    2. Beijing Sifang Automation CO., LTD., Beijing 100084, China
  • Received:2015-05-25 Online:2016-01-18 Published:2016-02-04

摘要: 为进一步提升融冰装置性能,研究了兼备STATCOM动态无功功率补偿以及线路直流融冰功能的系统。该系统采用双链式STATCOM拓扑结构,采用动态无功电流跟踪技术以及中性点偏移的控制方式,实现动态无功功率支撑与线路直流融冰等双重功能。首先介绍了该直流融冰系统的结构,并详细研究了系统控制策略,根据系统应用的不同功能对其输出功率进行分析,同时搭建了基于EMTDC/PSCAD仿真模型对控制策略进行验证。最后,以12 MW直流融冰兼STATCOM系统为例制作了样机进行实验,论证了系统设计的可行性。

关键词: 直流融冰, 无功功率补偿, STATCOM, 中性点偏移

Abstract: To further improve the performance of de-icing equipment, this paper develops a system that combines functions of DC de-icing with dynamic reactive power compensation based on STATCOM. The system utilizes the topological structure of a double chained mode STATCOM, the dynamic reactive current tracking technique, and the neutral point skewing technique, to create the functions of reactive power support and DC de-icing. This paper first introduces the system structure, which is followed by a detailed discussion on the system control strategy. The output power characteristic of the system is then analyzed under different operational conditions to evaluate the system functional performance. In addition, an EMITDC/PSCAD based simulation model is developed to test the control strategy. Finally, a prototype machine with 12 MW rating of the de-icing capacity combined with a STATCOM is developed and used to conduct experiments to verify the feasibility of the system design proposed in this paper.

Key words: DC de-icing, reactive power compensation, STATCOM, neutral point skewing

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