一种改进型闭锁重合闸信号跨双网配合方式及其风险分析  

An improved cross double network locking reclosing signal coordination mode and its risk analysis

作　　者：宋劲扬 黄潇恺 李舒适 苏靖 SONG Jinyang;HUANG Xiaokai;LI Shushi;SU Jing(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳供电局有限公司,广东深圳518000

出　　处：《电力科学与技术学报》2022年第6期173-180,共8页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(51877012)。

摘　　要：目前,智能变电站的110 kV线路大多采用双重化线路保护,并且为每套保护配置过程层双网。由于智能站建设初期规范不一致,部分智能站的双重化保护闭锁重合闸配合方式存在跨双网的问题。针对上述问题,首先,研究110 kV线路双重化保护网络结构,分析双重化保护相互闭锁重合闸配合逻辑,提出一种改进型跨双网闭锁重合闸配合方式,给出变电站闭锁重合闸信号跨网通信风险计算方法;然后,以某220 kV智能变电站110 kV双重化线路为例进行案例分析,结果表明本文方法可以大幅提高通信可靠性;最后,以实际变电站为例对本文所提方法进行风险计算,为提升智能站跨双网通信的可靠性提供指导方法。At present,110 kV lines of smart substation mostly adopt double line protection,and the process layer double network is configured for each protection.Due to the inconsistent specifications in the early stage planning of smart stations,there is a potential cross-dual network problem in the double protection lock-reclosing coordination mode of some smart stations.In view of this,this paper studies the dual protection network structure of 110 kV transmission lines,and analyzes the coordination logic of mutual lock-reclosing of dual protections.An improved cross double network locking reclosing coordination mode is proposed.The calculation method of cross-network communication risks of substation blocking reclosing signals is given.Then the 110 kV double lines of 220 kV smart substation are taken as an example for case analysis,the results show that the proposed method greatly improves the communication reliability.Finally,the data in an actual substation is taken to calculate the risk of the method,which provides a guideline for improving the reliability of intelligent station cross dual network communication.

关 键 词：智能变电站 闭锁重合闸 过程层 智能终端 跨双网 

分 类 号：TM63[电气工程—电力系统及自动化]