浙江电力2024，Vol.43Issue(7)：3-9,7.DOI:10.19585/j.zjdl.202407001
DL/T 684-2012《大型发电机变压器继电保护整定计算导则》修订探讨
Discussion on the revision of DL/T 684-2012 guide of calculating settings of relay protection for large generator and transformer
摘要
Abstract
DL/T 684-2012 Guide of Calculating Settings of Relay Protection for Large Generator Transformer(hereinafter referred to as the"2012 Guide")has played a significant role in improving the correct operation rate of relay protection devices for generator transformers and ensuring the safe operation of electrical equipment in power plants.However,with the increase in capacity of individual generator units in China and the emergence of new faults,the"2012 Guide"has proved inadequate,requiring revision to better guide engineering practice.Therefore,this paper analyzes the problems in the"2012 Guide"and puts forward specific revision suggestions to address prob-lems such as misoperation of generator differential protection under sympathetic inrush current,misoperation of false power-on protection under poor synchronous conditions,and tripping of gap zero-sequence current protection of main transformer before reclosing in the case of transient single-phase ground faults on the line.The suggestions can provide reference for the revision of the"2012 Guide".关键词
发电机差动保护/定子接地保护/失步保护/逆功率保护/误上电保护/定子过负荷保护/负序过负荷保护/主变压器间隙零序保护Key words
generator differential protection/stator grounding protection/out-of-step protection/reverse power pro-tection/false power-on protection/stator overload protection/negative sequence overload protection/gap zero-sequence protection of main transformer引用本文复制引用
陈俊,桂林,陈邦强,兀鹏越,陈延云..DL/T 684-2012《大型发电机变压器继电保护整定计算导则》修订探讨[J].浙江电力,2024,43(7):3-9,7.基金项目
国家自然科学基金资助项目(52077115) （52077115）
