电网中备用电源自投装置的安全应用  

Safe application of auto-switch-on device of stand-by power supply

作　　者：王莉[1] 张予鄂[2] 王娟[1] 杨光[1] 张建安[1] 司瑞芹 

机构地区：[1]郑州供电公司,河南郑州450006 [2]河南省电力公司,河南郑州450052

出　　处：《电力系统保护与控制》2010年第20期225-227,231,共4页Power System Protection and Control

摘　　要：简单介绍了电网中常用的三种备用电源自投方式及动作逻辑,分析了常用备用电源自投装置关键定值项的整定方法。分别对变电站运行中的两个备自投动作案例做了详细的研究分析,并各自给出了相应的解决方案。案例1给出了备自投无流电流的选取方法。案例2指出了规程没有关于两级备自投时间配合的缺陷,并提供了相应的计算方法,解决了两级备自投时间配合问题,提高了备自投动作的成功率。In this paper,it introduces three types of auto-switch-on method and action logics of stand-by power supply,analyzes the value setting method of the key fixed values of the auto-switch-on device of the stand-by power supply,analyzes two real cases on auto-switch-on actions in substation separately and offers relevant solutions.In case 1,it shows the judgment method of current existence of auto-switch-on device of the stand-by power supply.In case 2,it points out the limitation of lack of time assort between two auto-switch-on actions on different voltage sides in the regulation,provides relevant calculation method and solves the problem mentioned above and improves the successful rate of auto-switch-on action.

关 键 词：动作逻辑 备用电源自投装置 定值配合 整定计算 两级备自投 

分 类 号：TM762[电气工程—电力系统及自动化]