牵引变压器空载谐波电流特性分析

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摘要当牵引供电系统处于空载或是轻负载时段时,牵引变压器成为了供电系统中最主要的谐波源。为了能够更好地理解牵引供电系统的空载谐波影响,有必要对牵引变压器空载谐波电流特性进行深入分析。本文测量了牵引变压器空载谐波电流,分析了牵引变压器空载谐波电流分布特性,并对东光变电所牵引变压器的质量进行了评估。

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	李健华
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关键词 ：牵引变压器, 空载, 谐波电流, 特分布性

Abstract：Because of the simple wiring, less components and high sensitivity, open-delta voltage protection is widely used in 10kV shunt capacitors protection. With the development of the grid, a large number of shunt capacitors are put into operation in the grid, but shunt capacitor open-delta voltage protection malfunctions easily because of the initial unbalance. This paper analyzes the influence of initial unbalance of shunt capacitors open-delta voltage protection through unbalance capacitor, three-phase unbalance power voltage and the performance difference of discharge coil, and simulates by PSCD/EMTDC, which provides an important reference for the actual protection setting.

Key words： shunt capacitor open delta-voltage protection initial unbalance

出版日期: 2014-11-04

作者简介: 李健华（1989-），男，硕士研究生，主要研究方向为牵引供电系统综合自动化。

引用本文:

李健华, 郭立飞, 赵丽平. 牵引变压器空载谐波电流特性分析[J]. 电气技术, 2014, 15(10): 24-26. Li Jianhua, Guo Lifei, Zhao Liping. Traction Transformer No-load Harmonic Current Characteristics Analysis. Electrical Engineering, 2014, 15(10): 24-26.

链接本文:

http://dqjs.cesmedia.cn/CN/Y2014/V15/I10/24