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Study on Reliability Improvement of Distribution Network Based on Self-healing System

  • Gangjin Ye
  • Junhai Wang
  • Tianyu Zhao
  • Xuan Yang
  • Weibin He
  • Yongcheng HuEmail author
  • Huafeng Jin
  • Lei Tian
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 585)

Abstract

In order to meet the increasing reliability requirements of urban distribution network, based on the typical wiring of urban cable ring network, combined with three typical automated protection modes, this paper uses the analytical method to study the data about power outage caused by faults occurred on outlet circuit breakers, line segments, subsection switches, load switches and distribution transformers (DTs) respectively. Then the corresponding reliability improvements are put forward. The analysis results show that to assure the reliability of class A region, the centralized distribution automation and load switches should be adopted instead of decentralized system and subsection switches. To assure the reliability of class A+ region, the scheme of differential protection plus self-healing should be used, with subsection switches and tie switches replaced by circuit breakers and each circuit breaker in the ring main units (RMUs) enclosed in either Vacuum or SF6 box separately.

Keywords

Distribution network Reliability evaluation Distribution automation (DA) Distribution transformer (DT) Differential protection 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Gangjin Ye
    • 1
  • Junhai Wang
    • 1
  • Tianyu Zhao
    • 1
  • Xuan Yang
    • 1
  • Weibin He
    • 1
  • Yongcheng Hu
    • 2
    Email author
  • Huafeng Jin
    • 2
  • Lei Tian
    • 3
  1. 1.Hangzhou Power Supply CompanyHangzhouChina
  2. 2.Hangzhou Yuanwei Electric Power Design Consulting Corp., Ltd.HangzhouChina
  3. 3.China Telecom Zhejiang BranchHangzhouChina

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