电气技术  2023, Vol. 24 Issue (12): 75-79    DOI:
技术与应用 |
基于时域平移的高压并联电抗器匝间保护工程应用分析
孙宇闻
南京铁道职业技术学院,南京 211102
Application analysis of high voltage shunt reactor inter-turn protection based on time-domain translation
SUN Yuwen
Nanjing Institute of Railway Technology, Nanjing 211102
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摘要 匝间保护是高压并联电抗器的主保护,对电力系统的稳定运行具有重要意义。传统基于零序分量原理的匝间保护在现场应用中出现多次误动,因此本文在分析高压并联电抗器结构及电气特征的基础上,梳理传统匝间保护误动的原因,提出一种由铁心饱和判据和时域平移故障判据构成的高压并联电抗器匝间保护新方法。实验及运行结果表明,无论高压并联电抗器铁心是否饱和,该方法既能保证其无故障空投时可靠不动作,又能在其发生匝间短路故障时快速、可靠动作,从而解决了传统匝间保护因铁心饱和而误动的问题。
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孙宇闻
关键词 高压并联电抗器匝间保护时域平移铁心饱和    
Abstract:The inter-turn protection is the main protection of high voltage shunt reactor, which is of great significance to the stable operation of power system. The traditional inter-turn protection based on the principle of zero sequence component has been misoperated for many times on site. Based on the analysis of the structure and electrical characteristics of high-voltage shunt reactor, this paper defines the cause of traditional inter-turn protection malfunction, and proposes a new method of high voltage shunt reactor inter-turn protection, which is composed of core saturation criterion and time-domain translation fault criterion. The experimental and operation results show that no matter whether the iron core of high voltage shunt reactor is saturated or not, this scheme can ensure that it can not only act reliably when there is no fault airdrop, but also can act sensitively and reliably, so as to solve the problem of misoperation of traditional inter-turn protection due to iron core saturation.
Key wordshigh voltage shunt reactor    inter-turn protection    time-domain translation    core saturation   
收稿日期: 2023-08-16     
作者简介: 孙宇闻(1986—),女,硕士,工程师,主要从事电力电子技术在电力系统中的应用方面的研究工作。
引用本文:   
孙宇闻. 基于时域平移的高压并联电抗器匝间保护工程应用分析[J]. 电气技术, 2023, 24(12): 75-79. SUN Yuwen. Application analysis of high voltage shunt reactor inter-turn protection based on time-domain translation. Electrical Engineering, 2023, 24(12): 75-79.
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https://dqjs.cesmedia.cn/CN/Y2023/V24/I12/75