吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (4): 1234-1241.doi: 10.13229/j.cnki.jdxbgxb201504031

• • 上一篇    下一篇

基于超导储能系统的不对称电压跌落补偿方法

包广清1, 毛振鹏2   

  1. 1.兰州理工大学 电气工程与信息工程学院, 兰州 730050;
    2.国家电网 三明供电公司, 福建 三明 365000
  • 收稿日期:2013-10-14 出版日期:2015-07-01 发布日期:2015-07-01
  • 作者简介:包广清(1972-),女,教授,博士生导师.研究方向:新能源发电,电能转换与控制.E-mail:baogq03@163.com
  • 基金资助:
    国家自然科学基金项目(51267011); 甘肃省科技支撑计划项目(1011JKCA173); 甘肃省杰出青年基金项目(1111RJDA007)

Superconducting magnetic energy storage based dynamic voltage restoration strategy for unbalanced voltage sags

BAO Guang-qing1, MAO Zhen-peng2   

  1. 1.Lanzhou University of Technology, Lanzhou 730050, China;
    2.Sanming Power Supply Corporation of State Grid, Sanming 365000, China
  • Received:2013-10-14 Online:2015-07-01 Published:2015-07-01

摘要: 提出了一种基于超导储能线圈的动态电压恢复器(DVR)系统,以解决电网故障导致的电压不平衡跌落对敏感负载的影响。在分析系统功率变换电路的组成及其工作原理的基础上,通过负载电压定向的电压矢量分析对DVR电压补偿域进行讨论,确定了在超导储能线圈容量限定条件下实现注入有功功率最小的控制策略。并通过仿真和实验研究,表明该DVR可以实现零能量补偿,且补偿后用户侧的电压和骤降前基本保持一致。

关键词: 电气工程, 动态电压恢复器, 超导储能, 电能质量, 电压跌落

Abstract: A dynamic voltage restorer(DVR) with superconducting magnetic energy storage (SMES) is presented in this paper, which protects sensitive loads from unbalanced grid voltage sags. Firstly, the schematic representation and general principles of the DVR are described. Then based on the load voltage oriented vector analysis, the voltage injection magnitude, load power swing and phase shift are discussed. In addition, a new concept of restoration techniques is put forward to inject minimum energy for DVR during compensation. Simulation analysis and experiment results of the DVR system, show that the proposed method could minimize the injection real power of DVR with given apparent power and the customer side voltage is restored effectively.

Key words: electrical engineering, dynamic voltage restorer(DVR), superconducting magnetic energy storage(SMES), power quality, voltage sags

中图分类号: 

  • TM4
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