中国电力 ›› 2014, Vol. 47 ›› Issue (3): 116-119.DOI: 10.11930/j.issn.1004-9649.2014.3.116.3

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基于零序电压定相比幅的消弧线圈调谐新方法

苗晓鹏, 文振江, 李晓波, 赵国栋   

  1. 中国矿业大学 信息与电气工程学院,江苏 徐州 221008
  • 收稿日期:2013-12-08 出版日期:2014-03-31 发布日期:2015-12-18
  • 作者简介:苗晓鹏(1986-),男,河南平顶山人,硕士研究生,从事电力系统接地线路与继电保护研究。E-mail: miaoxiaopeng123@126.com
  • 基金资助:
    国家自然科学基金资助项目(51107143)

A new tuning method of arc suppression coil based on the zero-sequence voltage fixed phase and compared amplitude

MIAO Xiao-peng, WEN Zhen-jiang, LI Xiao-bo, ZHAO Guo-dong   

  1. School of Information and Electrical Engineering, CUMT, Xuzhou 221008, China
  • Received:2013-12-08 Online:2014-03-31 Published:2015-12-18

摘要: 为了方便简单地测量消弧线圈接地系统中线路的对地参数,提出了一种基于零序电压定相比幅的消弧线圈调谐新方法。该方法是在配电网中性点增加消弧线圈及电阻,在并入电阻之前,先测量出零序电压相位,并入电阻之后,配合消弧线圈的进一步调节,直到与并入电阻前零序电压相位相同(并入电阻前后避开谐振点)。测量出零序电压幅值,代入公式即可精确地求出线路对地总电容与总电阻。最后,利用Matlab搭建模型进行实验仿真,该方法具有操作简单、精度较高等优点,对消弧线圈调谐有重要意义。

关键词: 相位, 中性点, 电阻, 消弧线圈调谐, 零序电压, 幅值

Abstract: In order to facilitate the measurement of the parameters to ground in the neutral point arc suppression coil grounding system ,a new tuning method of arc suppression coil based on the zero-sequence voltage fixed phase and compared amplitude is proposed. In this method, the arc suppression coil and resistor are added in the distribution network neutral point, before incorporating the resistor, the zero-sequence voltage phase can be measured firstly; after incorporating the resistor, the arc suppression coil inductance value will be further adjusted to make sure that the zero-sequence voltage phase of the neutral point is identical. The total capacitance and the total resistance to the ground in the power distribution network can be accurately obtained by using the formula with the measured zero-sequence voltage amplitude. Finally, the Matlab simulation model is built to verify the tuning method. It proves that this method has the advantages of simple operation, high accuracy etc.; and it has good compensation effect on the arc suppression coil tuning.

Key words: phase, neutral point, resistor, arc suppression coil tuning, zero-sequence voltage, amplitude

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