极寒地区600MW汽轮发电机出口加装GCB重大项目研究分析  

作　　者：吉鹏 

机构地区：[1]内蒙古国华呼伦贝尔发电有限公司

出　　处：《科技创新与应用》2019年第33期54-56,共3页Technology Innovation and Application

摘　　要：国华呼贝电厂发电机出口加装断路器技改项目是2017至2018年度国华公司年度重大技改项目之一,也是原神华集团内首家、全国火电系统内第二个在已投运机组的发变组单元接线电气系统中加装发电机出口加装断路器的重大技改项目。为确保该项重大技改工程顺利实施,呼贝电厂高度重视,经过前期反复论证研究,深度调研系统内外成功案例,结合实际合理规划设计,现已成功完成两台机组发电机出口均已加装GCB改造项目。通过近两年改造后电气一次、二次设备或系统运行效果分析和验证,此项重大技改达到了预期效果和目的。改项后带来的安全效益和经济效益十分可观,加装出口断路器后,停机且冬季主变倒挂后主变内部油温可控制在10℃以上,改善了主变运行工况,延长主设备使用寿命,大大降低维护成本和日常工作量,隐形的安全效益是长期存在的,呼贝电厂成功的改造经验也为国家能源集团内火电机组加装出口GCB改造带来现实的指导意义。The technical renovation project of installing circuit breakers for the export of generators in Guohua Hubei Power Plant is one of the major technical transformation projects of Guohua Company in 2017-2018.It is also the first in the former Shenhua Group and the second major technical renovation project in the national thermal power system to install circuit breakers at the outlet of generators in the wiring electrical system of generating and transformer units that have been put into operation.In order to ensure the smooth implementation of this major technical transformation project,Hubei Power Plant attaches great importance to it.After repeated demonstration and study in the early stage,in-depth investigation of successful cases inside and outside the system,combined with practical and reasonable planning and design,so far the GCB retrofit project has been successfully completed for the export of both generators.Through the analysis and verification of the operation effect of the electrical primary and secondary equipment or system after the transformation in the past two years,this major technical transformation has achieved the expected effect and purpose.After the modification,the safety benefit and economic benefit are very considerable.After installing the outlet circuit breaker,the internal oil temperature of the main transformer can be controlled above 10℃after the main transformer is hung upside down in winter,which improves the operating condition of the main transformer and prolongs the service life of the main equipment.The maintenance cost and daily workload are greatly reduced,and the invisible safety benefit exists for a long time.Hubei Power Plant's experience in successful transformation also brings practical guiding significance for the retrofit of thermal power unit export GCB in the National Energy Group.

关 键 词：GCB 调研 改造方案设计 主变 

分 类 号：TM621[电气工程—电力系统及自动化]