电气工程学报 ›› 2015, Vol. 10 ›› Issue (11): 33-38.doi: 10.11985/2015.11.005

• 理论研究 • 上一篇    下一篇

基于变压器模糊自适应纵联差动保护的仿真研究

宗超凡1,曾昭炜2,赵海丽1,代奇迹1   

  1. 1. 贵州大学电气工程学院 贵阳 550000
    2. 国家电网湖南省电力公司怀化供电分公司 怀化 418000
  • 收稿日期:2015-07-15 出版日期:2015-11-25 发布日期:2015-11-25
  • 作者简介:宗超凡, 男 1991年生,硕士研究生,研究方向为电力系统运行与控制。|曾昭炜, 男 1988年生,硕士,研究方向为电力系统保护与控制。

A Fuzzy Adaptive Longitudinal Differential Protection of Transformer and Its Simulation Study

Zong Chaofan 1,Zeng Zhaowei 2,Zhao Haili 1,Dai Qiji 1   

  1. 1. Guizhou University Guiyang 550000 China
    2. Huaihua Electricity Supply Company Huaihua 418000 China
  • Received:2015-07-15 Online:2015-11-25 Published:2015-11-25

摘要:

为了提高变压器纵联差动保护动作的可靠性,本文设计了一种模糊自适应纵联差动保护。当发生区内故障时,模糊逻辑自动调节减小制动系数,增加了区内保护的灵敏性;当发生区外故障时,模糊逻辑自动调节增大制动系数,增加了保护的可靠性。通过Matlab仿真结果表明,模糊自适应纵联差动保护切实可行,并且比传统纵联差动更具优势。

关键词: 模糊自适应控制, 纵联差动保护, 控制因子, 变压器, Matlab仿真

Abstract:

In order to improve the reliability of transformer longitudinal differential protection, a fuzzy adaptive longitudinal differential protection of transformer is proposed in the paper. When a fault occurs in the protection zone, the fuzzy logic can reduce the resistance coefficient automatically. It results to increase the sensitivity of protection. Besides, when a fault happens out of the protection zone, the fuzzy logic can adaptive increase the resistance coefficient. It enhances the reliability of protection. Finally, the Simulink simulation is done on Matlab. It is result that the proposed fuzzy adaptive longitudinal differential protection of transformer is better than the longitudinal differential protection of transformer.

Key words: Fuzzy adaptive control, longitudinal differential protection, control factor, transformer, Matlab simulation

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