发电厂电气二次调试若干问题分析  

Analysis on Several Problems of Electrical Power Plant Secondary Circuit

作　　者：洪梅子 张侃君[1] 陈堃[1] 

机构地区：[1]国网湖北省电力公司电力科学研究院,湖北武汉430077

出　　处：《湖北电力》2016年第2期58-60,64,共4页Hubei Electric Power

摘　　要：电气二次调试是发电厂基建工作的一项重要环节,但是目前的调试方法还存在一些缺陷有待优化,影响了调试结果的有效性和正确性。本文就调试方法不规范、无法在小电流情况下确定保护极性以及电流互感器(TA)选型不合理等问题进行分析,并提出了调试规范化措施、多回绕线法测小电流以及TA选型原则等改进措施,这些措施已在发电厂基建工作中得到了应用,并取得了良好的效果。Secondary equipment debugging is a very important link in electric commissioning ofpower plant. But still there are defects needs to be optimized in the current debugging method,which affects the validity and correctness of the test results. In this paper, problems such as nonstandard debugging method, unable to determine protection polarity under small current conditionand unreasonable design in current transformer type selection are analyzed, therefore standardization debugging measures, measuring small current with multi winding line method ,the principles inselection of TA ratio and capacity are presented. These measures have been applied in power plantconstruction, which have achieved good results.

关 键 词：发电厂 电气二次调试 电流互感器 继电保护 

分 类 号：TM621[电气工程—电力系统及自动化]