大型汽轮机保安系统故障树分析  

Failure Tree Analysis of Security System in Large Steam Turbine

作　　者：邓小文[1] 冯永新[1] 梁磊[2] 蒋东翔[2] 

机构地区：[1]广东电网公司电力科学研究院,广州510080 [2]清华大学热能工程系,北京100084

出　　处：《华东电力》2012年第1期92-95,共4页East China Electric Power

基　　金：国家自然科学基金项目(60979014)~~

摘　　要：大型汽轮机在运行、甩负荷等过程中有可能发生超速事故,保安系统可及时、自动地动作关闭汽阀或者实现紧急停机,以防止事故的进一步恶化。使用故障树分析方法,建立了大型汽轮机保安系统的故障树,对保安系统的可靠性进行了分析与计算,为保安系统的设计和优化提供依据,以提高大型汽轮机机组的安全性。An over-speed accident may occur when the large steam turbine is operating or rejecting load.In this case,the security system can close down steam valves timely and automatically,or start the emergency shutdown function in order to prevent further deterioration of the accident.This paper builds the failure tree for the security system of a large steam turbine,and thereby computes and analyzes its reliability.The result can provide basis for the future design and optimization of security systems for the purpose to enhance the safety of large steam turbine units.

关 键 词：大型汽轮机 保安系统 故障树 

分 类 号：TM62[电气工程—电力系统及自动化] TK32[动力工程及工程热物理—热能工程]