Real-time Parameter Measurement Method Against Ground Based on Hybrid Flexible Arc Suppression

GUO Runsheng; WANG Huanming; LI Liang; NIU Wei; HU Fan

doi:10.13296/j.1001-1609.hva.2026.04.025

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Real-time Parameter Measurement Method Against Ground Based on Hybrid Flexible Arc Suppression

Technical Discussion | 更新时间：2026-04-08

- Real-time Parameter Measurement Method Against Ground Based on Hybrid Flexible Arc Suppression
- High Voltage Apparatus Vol. 62, Issue 4, Pages: 215-222(2026)
- 作者机构：
  
  国网山西省电力公司朔州供电公司，山西朔州 036000
  国网山西省电力公司太原供电分公司，太原 030000
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.04.025
  CLC：
- Received：02 September 2025，
  
  Revised：2025-11-14，
  
  Published：16 April 2026
- 稿件说明：
移动端阅览
GUO Runsheng, WANG Huanming, LI Liang, et al. Real-time Parameter Measurement Method Against Ground Based on Hybrid Flexible Arc Suppression[J]. High Voltage Apparatus, 2026, 62(4): 215-222.
DOI：

GUO Runsheng, WANG Huanming, LI Liang, et al. Real-time Parameter Measurement Method Against Ground Based on Hybrid Flexible Arc Suppression[J]. High Voltage Apparatus, 2026, 62(4): 215-222. DOI： 10.13296/j.1001-1609.hva.2026.04.025.

摘要

现有的配电网单相接地电流消弧装置需在配电网正常运行时测量对地参数，在故障时注入电流完成全补偿消弧。但由于三相对地参数随配电网的运行方式不同而发生改变，电流消弧装置可能因配电网单相接地故障后对地参数变化而导致注入的电流无法将系统对地参数补偿至正常状态，无法全补偿消弧。针对以上问题，文中提出了一种基于混合型柔性消弧的实时对地参数测量方法，在检测到配电网单相接地故障后，利用有源电流消弧装置注入特征频率电流信号，计算系统过渡电阻和总对地电容，并计算消弧需要注入的电流。随后闭合非电力电子设备，将电力电子设备与非电力电子设备并联，利用计算得出电流源需要注入的电流数值，实现故障消弧。MATLAB的仿真结果和真型试验场实验结果证明了所提方案在不同故障场景下均能够实时准确测量配电网对地参数并安全可靠消弧。

Abstract

The existing single-phase grounding current suppression devices for distribution network need measuring ground parameters during normal operation and injecting current to achieve full-compensation arc suppression upon fault occurrence. However

since the three-phase parameters change against ground with the operation mode of the distribution mode

the current arc suppression device may fail to compensate the system's ground parameters back to normal levels due to the parameter changes after a single-phase grounding fault. Consequently

it cannot achieve full-compensation arc suppression. To address above issues

in this paper a real-time measurement method of ground parameters based on hybrid flexible arc suppression is proposed. After detecting the single-phase grounding fault of distribution network

the active current suppression device is used to inject characteristic frequency current signals

calculate the system transition resistance and total capacitance to ground

and calculate the current to be injected. Then

the non-power electronic equipment is closed

the power electronic equipment and the non-power electronic equipment are connected in parallel

and the current value that the current source needs to be injected is calculated to achieve the fault arc suppression. The simulation results of MATLAB and the experimental results of true type test site prove that the proposed scheme can accurately measure the ground parameter of distribution network in real time under different fault scenarios and achieve safe and reliable arc suppression.

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references

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