10 kV配网级差保护与馈线自动化混合应用实用化策略与方法  

Hybridized Application of Sectional Difference Protection and Feeder Automation in 10 kV Distribution Networks

作　　者：贺玫璐 薛鹏飞 郑泽慧 卢佳杨 何俊强 陈光华 HE Meilu;XUE Pengfei;ZHENG Zehui;LU Jiayang;HE Junqiang;CHEN Guanghua(School of Electronic Information Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Taiyuan Power Supply Company,State Grid Taiyuan Electric Power Co.,Ltd.,Taiyuan 030012,China;Great Wall Electric Co.,Ltd.,Taiyuan 030032,China)

机构地区：[1]太原科技大学电子信息工程学院,山西太原030024 [2]国网山西省电力公司太原供电公司,山西太原030012 [3]长城电气股份有限公司,山西太原030032

出　　处：《电工技术》2024年第19期60-63,共4页Electric Engineering

基　　金：山西省高等学校科技创新项目(编号2023L174)。

摘　　要：10 kV配网设备运行环境恶劣,设备种类多,发生故障概率较高。如果保护上下级配合不当,就将导致故障影响范围扩大。馈线自动化启动研判策略不当,也将无法实现故障越级跳闸开关,负荷转供用时无法由小时级压降到分钟级。依据线路不同的运行情况,使用不同的保护策略,降低故障越级跳闸的情况,缩小停电范围;结合馈线自动化技术,精准定位故障区域、及时研判故障停电范围。分析了10 kV配网三段式保护、零序保护配置方法,集中型馈线自动化配置策略,指导配电网日常运维中保护定值的整定、馈线自动化的信息传动,极大提升二次实用化效率和供电可靠性。The operating environment of 10 kV distribution network equipment is harsh,with a wide variety of equipment types and a high fault rate.If the cooperation between superiors and subordinates is improper,the scope of the fault will be expanded.The analysis and determination strategy for feeder automation startup is inappropriate,and it is impossible to achieve self-healing of fault level skipping trip switches.When transferring loads,the use of time cannot drop from the hourly level to the minute level.According to the different operating conditions of the line,sectional different protection strategies should be used to reduce the occurrence of fault tripping and minimize the scope of power outages.And feeder automation technology is used for assistance to accurately locate fault area and timely assess the scope of power outages caused by faults.This paper analyzes the configuration methods of three-stage protection and zero sequence protection for 10 kV distribution networks,as well as the centralized feeder automation configuration strategy.It may guide the tuning of protection thresholds and information transmission for feeder automation in daily operation and maintenance of distribution networks,and has the potential of improving the efficiency of secondary practicality and power supply reliability.

关 键 词：级差保护 馈线自动化 三段式保护 零序保护 集中型馈线自动化 

分 类 号：TM464[电气工程—电器]