SPPA-T3000 DEH系统电超速保护装置旁路改造与分析  

Bypass Reconstruction and Analysis on Electric Overspeed Tripping Device of SPPA-T3000 DEH System

作　　者：陈辉 曾宪平 王胜虎[2] CHEN Hui ZENG Xianping WANG Shenghu(Shenhua Guohua Jiujiang Power Generation Co.,Ltd.,Hukou Jiangxi 332504,China Guohua Chenjiagang Power Generation Co.,Ltd.,Xiangshui Jiangsu 224631,China)

机构地区：[1]神华国华九江发电有限责任公司,江西湖口332504 [2]神华江苏国华陈家港发电有限公司,江苏响水224631

出　　处：《浙江电力》2017年第5期48-52,共5页Zhejiang Electric Power

摘　　要：介绍了某发电厂660 MW汽轮机组SPPA-T3000 DEH系统由于测速卡故障引发的超速保护动作,以及对电超速保护系统BRAUN卡自检故障的处理。针对故障处理过程中电超速保护无法退出的情况,提出电超速保护系统旁路改造方案,确保机组运行中,当转速探头或BRAUN卡件故障时,能退出1套超速保护,进行故障处理。This paper introduces the overspeed protection action of SPPA-T3000 DEH system of 660 MW steam turbine units in a power plant due to speed measurement card and the self-test fault handling of BRAUN card of electric overspeed protection system. In order to solve the problem that the electric overspeed protection can not be withdrawn during the fault handling process,the paper proposes a bypass reconstruction scheme for electric overspeed tripping device to ensure that a set of overspeed protection can be withdrawn for fault handling when the speed probe or BRAUN card is faulty during unit operation.

关 键 词：汽轮机 SPPA-T3000系统 电超速保护装置 旁路改造 

分 类 号：TM621[电气工程—电力系统及自动化]