| 引用本文: | 高厚磊,徐 彬,向珉江,等.5G通信自同步配网差动保护研究与应用[J].电力系统保护与控制,2021,49(7):1-9. |
| GAO Houlei,XU Bin,XIANG Minjiang,et al.Research and application of self-synchronized differential protection for distributionnetworks using 5G as the communication channel[J].Power System Protection and Control,2021,49(7):1-9 |
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| 摘要: |
| 随着分布式电源的高度渗透和环网结构的逐步增多，配电网迫切需要电流差动保护应对过流保护面临的挑战。基于5G的商用化契机，研究开发一种基于5G通信的配电网分布式差动保护。该保护采用基于移动边缘计算的切片网络作为数据通道，具有超低延时和超高可靠的特点；采用基于故障时刻的自同步方法解决差动保护两端的数据同步问题，无需增加额外对时装置。在5G智能电网应用示范区，对所开发装置进行了单基站和跨基站环境下的综合测试，并投入10 kV线路试点运行。现场测试结果与试运行数据表明，差动保护性能满足配电网工程应用要求。 |
| 关键词: 5G通信 网络切片 uRRLC场景 配电网 差动保护 自同步 故障时刻 |
| DOI：DOI: 10.19783/j.cnki.pspc.210099 |
| 分类号: |
| 基金项目:国家电网公司总部科技项目资助(5100-20205501 8A-0-0-00)；山东电力公司科技项目资助(5206011900DG) |
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| Research and application of self-synchronized differential protection for distributionnetworks using 5G as the communication channel |
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GAO Houlei, XU Bin, XIANG Minjiang, LI Lisheng, XU Qun, ZHANG Tao, LI Kun, CHEN Heng, GAO Weiliang
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(1. School of Electrical Engineering, Shandong University, Jinan 250061, China; 2. State Grid Jinan Power Supply Company,
Jinan 250012, China; 3. State Grid Shandong Electric Power Research Institute, Jinan 250003, China; 4. State Grid Qingdao
Power Supply Company, Qingdao 266002, China; 5. Shandong Kehui Power Automation Co., Ltd., Zibo 255087, China)
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| Abstract: |
| With the high penetration of distributed generation and the gradual increase of ring network structure, distribution networks urgently need current differential protection to overcome the challenges faced by over-current protection. Taking the opportunity of 5G commercialization, this paper develops a distributed differential protection for distribution networks using 5G. In this protection system, a sliced network based on mobile edge computing is deployed as a data channel. This has the feature of ultra-low latency and ultra-high reliability. The fault instant-based self-synchronization method is adopted to realize the data synchronization required by differential protection. It has no need for additional timing devices. In a demonstration of 5G application for the smart grid, the developed relays are comprehensively tested under both single and crossing base station environments. The relays have been put into use in a 10 kV feeder for test run purposes. Both field test results and test run data indicate that the performance of the proposed differential relays meet the requirements of a distribution network in engineering application.
This work is supported by the Science and Technology Project of the Headquarters of State Grid Corporation of China (No. 5100-202055018A-0-0-00) and the Science and Technology Project of Shandong Electric Power Company (No. 5206011900DG). |
| Key words: 5G communication network slice uRRLC scene distribution network differential protection self- synchronization fault instant |
