Distribution network distributed DTU differential protection system based on 5G communication

Abstract

The invention discloses a distribution network distributed DTU differential protection system based on 5G communication, which comprises a ring network unit, the ring network unit comprises a distribution network-based distributed DTU, the distributed DTU comprises a DTU public unit and a DTU interval unit, and the DTU public unit integrates a Beidou / GPS function and provides a PPS pulse per second synchronous bus with a subtle error to the outside. The DTU interval units are accessed to a synchronous bus, and different DTU interval units are accessed to a 5G base station through a process layer switch and a 5G CPE to form an end-to-end communication 5G process layer network. The system is designed based on a distribution network distributed DTU product, depends on the high-reliability low-delay communication characteristic of 5G, adopts a synchronization algorithm based on Beidou / GPS pulse per second, realizes end-to-end data transmission through an SV / GOOSE protocol of the IEC61850 standard, and realizes a rapid differential protection function based on a 5G wireless network by depending on a split-phase current longitudinal differential protection principle.

Description

technical field [0001] The invention relates to the technical field of wireless differential protection for power distribution networks, in particular to a distribution network distributed DTU differential protection system based on 5G communication for distribution network cable lines that need to realize wireless differential protection. Background technique [0002] The National Planning Outline points out that "actively promote the research on key technologies of fifth-generation mobile communication (5G) and ultra-broadband, and start 5G commercial use", thus laying the foundation for the development of 5G in China. The three application scenarios defined by 5G, eMBB (Enhanced Mobile Broadband), mMTC (Massive Machine Type Communication), and URLLC (High Reliability and Low Latency Communication), provide the possibility of differentiated customization for different industries and different businesses. [0003] Differential protection has the characteristics of fast acti...

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Problems solved by technology

[0003] Differential protection has the characteristics of fast action and can achieve good protection selectivity. It has long-term and stable operation experience in the dedicated fiber channel environment. However, the distribution network has many points and the line topology is complex and changeable. Construction of dedicated fiber channel There are great difficulties in terms of economy and feasibility

Differential protection based on 4G wireless communication cannot provide reliable support in terms of low delay and high reliability, but 5G slicing technology provides support for providing a wireless network environment with high reliability and low delay. Motion protection offers the possibility

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