A Novel Protection Scheme for Microgrid Internal Short Circuit Fault

TUNIH Amet; CUI Shuangxi; WANG Weiqing; ALIMJAN Kader

doi:10.14044/j.1674-1757.pcrpc.2019.06.029

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A Novel Protection Scheme for Microgrid Internal Short Circuit Fault

更新时间：2024-09-14

- A Novel Protection Scheme for Microgrid Internal Short Circuit Fault
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 40, Issue 6, Pages: 166-173(2019)
- 作者机构：
  
  新疆大学电气工程学院可再生能源发电并网技术教育部工程研究中心
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2019.06.029
  CLC： TM934.7
- Published：2019，
- 稿件说明：
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[1]吐努合·阿米提,崔双喜,王维庆,阿里木江·卡德尔.一种新型微网内部故障保护方案[J].电力电容器与无功补偿,2019,40(06):166-173.

TUNIH AMET, CUI SHUANGXI, WANG WEIQING, et al. A Novel Protection Scheme for Microgrid Internal Short Circuit Fault. [J]. Power capacitor & reactive power compensation, 2019, 40(6): 166-173.
[1]吐努合·阿米提,崔双喜,王维庆,阿里木江·卡德尔.一种新型微网内部故障保护方案[J].电力电容器与无功补偿,2019,40(06):166-173. DOI： 10.14044/j.1674-1757.pcrpc.2019.06.029.

TUNIH AMET, CUI SHUANGXI, WANG WEIQING, et al. A Novel Protection Scheme for Microgrid Internal Short Circuit Fault. [J]. Power capacitor & reactive power compensation, 2019, 40(6): 166-173. DOI： 10.14044/j.1674-1757.pcrpc.2019.06.029.

摘要

针对微网特殊的系统结构和运行方式对其保护带来的故障电流难以检测的问题

建立了典型的CERTS微网发电系统模型

提出了以故障前后母线上测量阻抗幅值变化为故障检测判据

其相角变化为故障定位判据的微网保护方案

该方案基于母线上测量阻抗变化采用双重判据克服了传统电流保护的不足。基于PSCAD/EMTDC平台对该模型及本文提出保护方案进行了仿真分析

用Matlab软件进行了数据处理

仿真结果表明该保护方案能够准确区分区内外故障

及时检测故障并且定位、切除故障。

Abstract

In view of the problem that the fault current is difficult to be detected due to the special system structure and operation mode of the micro-grid

a typical CERTS microgrid power generation system model is established and such microgridprotection scheme as the impedance amplitude variation on the busbar beforeandafterthefaultistakenasbaseforthefaultdetectionanditsphaseanglevariationasfaultlocation.The double criteria is adopted on the basis of variation of the measurement impedance of the busbar to overcome the shortcoming of traditional current protection. The model and the protection scheme proposed in this paper are simulated and analyzed on the basis of PSCAD/EMTDC platform. The Matlab software issued for data processing. It is shown by the simulation result that the scheme can distinguish clearly internalandexternalfault

detect

locate and eliminate the fault timely.

关键词

微网内部故障母线测量阻抗保护方案

Keywords

microgridinternal faultbusbar impedance measurementprotection strategy

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