基于5G无线通信的配电网自适应差动保护技术探讨  

Discussion on Adaptive Differential Protection Technology of Distribution Network Based on 5G Wireless Communication

作　　者：王廷凰 余江[2] 许健[3] 陈宏山[2] 刘子俊 WANG Tinghuang;YU Jiang;XU Jian;CHEN Hongshan;LIU Zijun(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518034,China;CSG Power Dispatching ControlCenter,Guangzhou 510623,China;Beijing Sifang Automation Co.,Ltd.,Beijing 100085,China)

机构地区：[1]深圳供电局有限公司,广东深圳518034 [2]中国南方电网电力调度控制中心,广东广州510623 [3]北京四方继保自动化股份有限公司,北京100085

出　　处：《供用电》2019年第9期18-21,27,共5页Distribution & Utilization

基　　金：深圳供电局有限公司科技项目(090000KK52170108)~~

摘　　要：针对大量分布式电源接入配电网以及用户对供电可靠性要求不断提高的问题,提出了一种基于5G无线通信的配电网拓扑自适应差动保护技术。该技术运用5G无线通信低延时、高带宽的特点,采用采样点插值同步法,实现故障的精确定位与隔离,有效地减少了终端运维的工作量,为配电网自动处理故障提供了新方向。为验证所提出的配电网自适应差动保护技术,在5G示范工程进行了通信性能测试、差动保护业务测试。除目前外场环境下不具备测试条件的测试项以外,其他所有测试项的结果均符合预期。Aiming at the problem that a large number of distributed power supply access distribution networks and users’ requirements for power supply reliability are continuously improved,a topology adaptive differential protection technology for distribution network based on 5 G wireless communication is proposed.The technology utilizes the characteristics of lowlatency and high-bandwidth of 5 G wireless communication,and adopts the sampling point interpolation synchronization method to achieve accurate positioning and isolation of faults,effectively reduces the workload of terminal operation and maintenance,and provides a new direction for automatic fault handling in the distribution network.In order to verify the proposed adaptive differential protection technology for distribution network,the communication performance test and differential protection service test were carried out in the 5 G demonstration project.Except for the current test items that do not have test conditions in the field environment,the results of all other test items are in line with expectations.

关 键 词：5G无线通信 差动保护技术 不确定性传输 差分B码 故障精确定位 

分 类 号：TM72[电气工程—电力系统及自动化]