一起备自投不正确动作的案例分析及改进  

A Case Study on BATS's Incorrect Action and Its Improvement

作　　者：叶婷[1] 

机构地区：[1]南京供电公司,江苏南京210019

出　　处：《江苏电机工程》2016年第1期87-88,91,共3页Jiangsu Electrical Engineering

摘　　要：当电网发生故障跳闸后,备自投装置能够迅速恢复失电负荷的供电,显著提高供电可靠性。但是在某些故障情况下,由于电动机启动电流大,可能导致备自投装置的不正确动作,增加主变过载风险,降低电网运行的经济性。结合一起电网故障引起备自投不正确动作的案例,分析其原因,提出设定2套时间定值或增加1个闭锁条件2种解决方法,可以有效地避免备自投装置的不正确动作。BATS can quickly restore power supply to load in the case of fault occurring in power grid, which significantly improves power supply reliability. However, in some cases the starting current of electric motor may lead to incorrect action of BATS, which increases the risk of transformer overload and reduces the economic performance of power grid operation. This paper analyzes an actual incident of incorrect action of BATS due to power grid fault. Base on the analysis, two effective solutions, namely adding two setting time and adding a blocking condition, to the incorrect action are proposed.

关 键 词：备自投 电动机 整定时间 闭锁条件 

分 类 号：TM73[电气工程—电力系统及自动化]