河北水利电力学院学报 ›› 2023, Vol. 33 ›› Issue (4): 32-37.DOI: 10.16046/j.cnki.issn2096-5680.2023.04.006

• 电气工程专题 • 上一篇    下一篇

考虑暂态过程的对地电容电流检测方法研究

周锐1, 夏俊雅2, 郑安豫1, 侯宜祥3   

  1. 1.安徽电气工程职业技术学院电力工程系,安徽省合肥市包河区包河大道56号 230051;
    2.中国建材检验认证集团安徽有限公司,安徽省合肥市包河区望江东路60号 230051;
    3.安徽省电力公司培训中心,安徽省合肥市包河区包河大道56号 230051
  • 收稿日期:2023-03-16 修回日期:2023-04-14 出版日期:2023-12-30 发布日期:2024-01-12
  • 作者简介:周 锐(1989-),女,安徽灵璧人,副教授,主要研究方向:电力系统故障分析。E-mail:zhouruihaohao126@126.com
  • 基金资助:
    安徽省2022优秀拔尖人才培育项目(gxyq2022282);安徽电气工程职业技术学院科研项目(2021kyxm10);安徽省教育厅质量工程项目(2019mooc561);安徽省教育厅质量工程项目(2020SJJXSFK0199);安徽省教育厅科技项目(KJ2018A0853)

Research on Capacitive Current Detection Method Considering Transient Process

ZHOU Rui1, XIA Jun-ya2, ZHENG An-yu1, HOU Yi-xiang3   

  1. 1. Department of Electrical Engineering Department of Electrical Engineering, Anhui Vocational and Technical College of Electrical Engineering, 230051, Hefei, Anhui, China;
    2. China Building Materials Inspection and Certification Group Anhui Co., Ltd., 230051, Hefei, Anhui, China;
    3. Anhui Electric Power Company Training Center, 230051, Hefei, Anhui, China
  • Received:2023-03-16 Revised:2023-04-14 Online:2023-12-30 Published:2024-01-12

摘要: 对谐振接地系统,画出电流源形式等值电路,提出基于暂态过程的一种对地电容电流检测方法,服务于消弧线圈跟踪调谐。该方法通过断开中性点调谐回路,测量过渡过程时间常数,以及电路稳定前后的电压、电流幅值,推导出对地电容的计算方法。在Matlab中搭建模型对方法进行验证,仿真数据验证该方法的有效性,测量方法简单,计算容易,测量时间短,计算精度满足要求,为消弧线圈跟踪调谐提供一种基于暂态过程测量电容的理论依据。

关键词: 暂态过程, 时间常数, 对地电容, Matlab

Abstract: For the resonant grounding system, the equivalent circuit of current source form is drawn, and a capacitive current detection method to ground based on the transient process is proposed to serve the tracking and tuning of arc suppression coil. The method derives the calculation method of capacitance to ground by disconnecting the neutral tuning loop, measuring the time constant of the transition process and the amplitude of the electric quantity after the circuit is stabilized. A model is built in Matlab to verify the method. The simulation data verifies the effectiveness of the method. The measurement method is simple, the calculation is easy, the measurement time is short, and the calculation accuracy meets the requirements. It provides a theoretical basis for measuring capacitance based on transient process for arc suppression coil tracking and tuning.

Key words: transient process, time constant, capacitance to ground, Matlab

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