宁夏电力Issue(5)：60-63,4.DOI:10.3969/j.issn.1672-3643.2013.05.016
汽轮机抽汽逆止门异常关闭原因分析及处理
Cause analysis and treatment of extraction check valve abnormal closing for steam turbine
尚小军1
作者信息
- 1. 西安华瑞能源设计咨询有限公司，陕西 西安 710025
- 折叠
摘要
Abstract
Aiming at the problem of No. 1 and No.2 units in a power plant frequently occurring gen-erator trip in operation, causing programmable logic controller (PLC) action, bringing on extraction check valve closing, to make analysis. The analysis result shows that the causes of the problem are power source of protection device get disturbance, the disturbance signal come into PLC through equivalent capacity on J1 and J3 lines, lead to protection device misoperation of generator trip. Afeter improving trip signal line of the original generator, the phenomenon of extraction check valve abnor-mal closing have never appearance.关键词
抽汽逆止门/PLC/SOE/干扰信号Key words
extraction check valve/programmable logic controller (PLC)/sequence of event(SOE)/disturbance signal分类
能源科技引用本文复制引用
尚小军..汽轮机抽汽逆止门异常关闭原因分析及处理[J].宁夏电力,2013,(5):60-63,4.
