基于环网的就地化分布式母线保护研究  

Research on Local Distributed Bus Protection Based on Ring Network

作　　者：董贝[1,2] 林朝阳 张尧 丁毅[1,2] DONG Bei;LIN Chao-yang;ZHANG Yao;DING Yi(State Grid Nanjing Automation Co.,Ltd.,Nanjing 210003,China;Nanjing State Grid Nanzi Power Grid Automation Co.,Ltd.,Nanjing 211153,China)

机构地区：[1]国电南京自动化股份有限公司,江苏南京210003 [2]南京国电南自电网自动化有限公司,江苏南京211153

出　　处：《通信电源技术》2020年第3期1-4,7,共5页Telecom Power Technology

摘　　要：提出一种基于环网的有主分布式跨间隔就地化母线保护方案。每个间隔配置一台独立的保护子机,所有子机配置完全相同,选取其中的一台子机为主机负责和后台通信。每台子机与其左右相邻的两台子机采用两对千兆光纤连接,最终连接成两组独立的光纤环网。两者互为冗余,各子机采集本间隔的交流数据和开关量并上送环网,同时从环网上实时获取其他子机的数据。基于这些数据,各个子机独立进行保护逻辑运算,判断本间隔的保护行为,输出开关量。每台子机配备光旁路开关,在本间隔检修退出时将本间隔从环网中旁路去掉,不影响其他间隔子机的运行。经过现场运行验证,有主分布式母线保护在可靠性与速动性方面比传统母线保护存在优势,同时提高了现场运维效率。This paper presents a local bus protection scheme based on ring network.Each bay is configured with an independent protection sub machine,and all sub machines are configured exactly the same.One of the sub machines is selected as the host to be responsible for communication with the background.Each sub machine and its two adjacent sub machines are connected by two pairs of gigabit optical fiber,and finally connected into two groups of independent optical fiber ring network.The two are redundant each other.Each sub-computer collects the AC data and switching value of this interval and sends them to the ring network.At the same time,it obtains the data of other sub-computers from the ring network in real time.Based on these data,each sub-computer independently carries out protection logic calculation,judges the protection behavior of this interval,and outputs the switching value.Each sub unit is equipped with an optical bypass switch.When the maintenance of this bay exits,the bypass of this bay is removed from the ring network,which will not affect the operation of other sub units of the bay.Through the field operation verification,the main distributed bus protection has advantages over the traditional bus protection in reliability and rapidity,and improves the field operation and maintenance efficiency.

关 键 词：就地化保护 分布式母线保护 环网 子机 主机 

分 类 号：TM773[电气工程—电力系统及自动化]