66kV联络线备用电源自动切换装置功能的改进  

Improvement of Automatic Connection Device for Reserve Power Source in 66 kV Link Line

作　　者：王晓波[1] 李忠夷 孙振胜[1] 姜洪华[3] 

机构地区：[1]吉林省电力有限公司,吉林长春130021 [2]中电投电力工程有限公司,山东烟台265100 [3]白山供电公司,吉林白山134300

出　　处：《吉林电力》2008年第4期25-27,共3页Jilin Electric Power

摘　　要：为防止一次变全停、保证对用户连续可靠供电,针对66 kV系统双母线单主变压器运行的一次变和有小电源的末端变电所配有备用电源自动切换装置(简称备自投)的2种情况,通过系统故障后电流、电压的变化及继电保护装置动作情况对备自投装置动作影响的分析,提出备自投功能改进方案,即采取改变母差保护闭锁备自投方式及线路跳闸联跳主变一、二次断路器等改进措施,启动备自投,防止上述2种损失负荷情况的发生。Reserve power source automatic connection devices are applied in primary substations with double buses and end substations with small power source in 66 kV system. An improved reserve power source automatic connection devices plan is proposed after the failure analysis on the change of current ＆voltage and effect of relay protection to reserve power source automatic connection devices. The plan includes changing bus differential protection mode to block the reserve power source automatic connection device, transmission line switching off and continuous switching off the primary and secondary breaker of the main transformer. Load loss is prevented in primary and end substations and total power off is prevented and continues and reliable power supply is insured.

关 键 词：备用电源自动切换装置 66 kV联络线 单台主变压器 一次变电所 末端变电所 

分 类 号：TM762[电气工程—电力系统及自动化]