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

被引：0
作者：
Lanzhou University of Technology, Lanzhou [1 ]
730050, China
不详 [2 ]
365000, China
机构：
[1] Lanzhou University of Technology, Lanzhou
[2] Sanming Power Supply Corporation of State Grid, Sanming
来源：
Jilin Daxue Xuebao (Gongxueban) | / 4卷 / 1234-1241期
关键词：
Dynamic voltage restorer (DVR); Electrical engineering; Power quality; Superconducting magnetic energy storage (SMES); Voltage sags;
D O I：
10.13229/j.cnki.jdxbgxb201504031
中图分类号：
学科分类号：
摘要：
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. ©, 2015, Editorial Board of Jilin University. All right reserved.
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页码：1234 / 1241
页数：7
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