基于5G组网的智能分布式配电网保护研究与应用

为解决分布式电源接入下的多源网络问题,以及传统配电网阶段式过流保护在整定配合上的难题,提出配网保护纵联化、广域化解决方案,实现多种运行方式下配网相间短路故障的全线速动。利用5G uRLLC高可靠低时延网络技术,提出了基于5G通信的配电终端自组网、快速对等通信以及组网方案。基于QoS+DNN+UPF专享的端到端网络组网方式,有效降低了配网保护业务时延,同时保障了数据传输的安全性。该技术路线已于2019年8月在安徽电网完成了国内首次试点应用,实践证明,所提出的方案能有效实现配网故障的精准定位与隔离,显著提升配网供电可靠性,具有较好的实用性和推广价值。

Research and application of intelligent distributed distribution network protection based on a 5G network

There is a problem of a multi-source network being accessed by distributed power sources and a difficulty in setting the coordination of staged over-current protection of a traditional distribution network. A solution for vertical connection and wide-area distribution network protection is proposed to realize the interphase of distribution network full-line quick action for short-circuit faults. Using 5G uRLLC high-reliability and low-latency network technology and a 5G communication power distribution terminal self-organizing network, fast peer-to-peer communication and networking solutions are proposed. Based on the exclusive end-to-end network networking mode of QoS+DNN+UPF, it effectively reduces the delay of the distribution network protection service and ensures the security of data transmission. The technology completed its first domestic pilot application in the Anhui Power Grid in 2019. Practice has proved that the proposed solution can effectively realize the precise location and isolation of distribution network faults, significantly improve the reliability of distribution network power supply, and has good practicability and application value.This work is supported by the General Project of National Natural Science Foundation of China (No. 51877060) and the Science and Technology Project of State Grid Anhui Electric Power Co., Ltd. (No. 52120018005C).