Research on Fast Self-Healing System of Distribution Network Based on 5G and Dynamic Topology Reconfiguration

doi:10.16628/j.cnki.2095-8188.2026.07.007

Abstract

Abstract:

With the large-scale integration of distributed generators such as photovoltaic and wind power, traditional passive radial distribution networks are transformed into active complex networks,which fundamentally change fault characteristics and causes overcurrent-based protection to suffer from over-reaching tripping,thus reducing power supply reliability. Based on topology analysis and dynamic topology reconfiguration, a rapid self-healing scheme consisting of dynamic regional protection construction, 5G communication networking and master station coordinated control is put forward. The scheme is verified via simulation and field pilot applications.Test indicators show that the operation time of regional protection is ≤30 ms, the isolation accuracy of single-phase ground faults reaches ≥95%,and fault self-healing time is shortened from minutes to seconds. The proposed scheme greatly improves distribution network resilience and renewable energy accommodation capacity.

Key words: distribution network, fault self-healing, regional protection, topology analysis, 5G communication

CLC Number:

TM727

Peng Wei. Research on Fast Self-Healing System of Distribution Network Based on 5G and Dynamic Topology Reconfiguration[J]. LOW VOLTAGE APPARATUS, 2026, 0(7): 50-54.

Figures/Tables 7

References 11

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时间	范围/ms	典型值/ms
保护信息交互时间T₁	15~30	20
装置跳闸出口时间T₂	5~15	10
保护整体动作时间T₃	20~45	30

性能指标	传统方案	主站协同自愈策略	提升效果
故障处理总时间	3~5 min	≤10 s	缩短约95%
多厂商设备协同成功率	约85%	>98%	提升13个百分点
供电可靠性(ASAI)	99.980%	99.995%	显著提升

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