基于5G与拓扑动态重构的配电网快速自愈系统研究OA

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,5 G 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.