Study on Full Compensation Arc Suppression of Active Current Injection for Single-phase Grounding Fault of Resonant Grounding System

LI Qi; PENG Shutao; REN Chong; ZHANG Zhihua; ZHAO Qian

doi:10.14044/j.1674-1757.pcrpc.2020.05.020

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Study on Full Compensation Arc Suppression of Active Current Injection for Single-phase Grounding Fault of Resonant Grounding System

更新时间：2024-09-14

- Study on Full Compensation Arc Suppression of Active Current Injection for Single-phase Grounding Fault of Resonant Grounding System
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 5, Pages: 118-124(2020)
- 作者机构：
  
  1. 国网陕西省电力公司
  2. 国网陕西省电力公司电力科学研究院
  3. 国家电网有限公司西北分部
  4. 贵州电网有限责任公司电力调度控制中心
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.05.020
  CLC： TM862
- Published：2020，
- 稿件说明：
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[1]李琦,彭书涛,任冲,张志华,赵倩.谐振接地系统单相接地故障有源电流注入全补偿消弧研究[J].电力电容器与无功补偿,2020,41(05):118-124.

LI QI, PENG SHUTAO, REN CHONG, et al. Study on Full Compensation Arc Suppression of Active Current Injection for Single-phase Grounding Fault of Resonant Grounding System. [J]. Power capacitor & reactive power compensation, 2020, 41(5): 118-124.
[1]李琦,彭书涛,任冲,张志华,赵倩.谐振接地系统单相接地故障有源电流注入全补偿消弧研究[J].电力电容器与无功补偿,2020,41(05):118-124. DOI： 10.14044/j.1674-1757.pcrpc.2020.05.020.

LI QI, PENG SHUTAO, REN CHONG, et al. Study on Full Compensation Arc Suppression of Active Current Injection for Single-phase Grounding Fault of Resonant Grounding System. [J]. Power capacitor & reactive power compensation, 2020, 41(5): 118-124. DOI： 10.14044/j.1674-1757.pcrpc.2020.05.020.

摘要

针对中/低压谐振接地配电网的故障消弧难题

提出一种消弧线圈结合单相级联H桥变流器的新型的主从式有源消弧方案。通过实时采集并跟踪故障残流

设计了H桥逆变器和PI控制系统

通过向中性点注入与故障残流等幅反相的可控电流实现接地故障电流全补偿

进而达到故障有效灭弧目的。仿真结果显示

所提方案能够较好满足接地故障电流全补偿的要求

可以快速、有效地补偿配网单相接地故障电流的有功、无功以及谐波分量

实现可靠熄弧

提高配电网的供电可靠性。

Abstract

In view of such difficult as fault arc suppression of medium/low voltage resonant grounding distribution network

a kind of a new master-slave active arc-suppression scheme combining arc suppression coil and single-phase cascade H-bridge converter is proposed in this paper.H-bridge inverter and PI control system are designed by real time collecting and tracking the fault residual current.The full compensation of the ground fault current is achieved by way of injecting the neutral point with controllable current with equal amplitude and opposite phase of fault residual currentso as to achieve effective arc extinguish of the fault.It is shown by the simulation results that the proposed scheme can meet the requirements of full compensation of ground fault current

can quickly and effectively compensate the active

reactive and harmonic components of ground fault current of the distribution network achieve reliable arc extinguishing and improve the power supply reliabilityof distribution network.

关键词

配电网单相接地故障故障残流有源全补偿

Keywords

distribution networksingle-phase earth faultfault residual currentactive full compensation

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