Improvement of protection control reliability on coal fired generation unit

ZHONG Zhikun1; CUI Zhanbing2 1.Jiangsu Guoxin Jingjiang Power Gerneration Co.Ltd.

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Improvement of protection control reliability on coal fired generation unit

Thermal Power Generation Vol. 42, Issue 7, Pages: 150-151(2013)

更新时间：2025-09-28

- Improvement of protection control reliability on coal fired generation unit
- 作者机构：
  
  1. 江苏国信靖江发电有限责任公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM611
- Published：2013
- 稿件说明：
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ZHONG Zhikun1, CUI Zhanbing2 1.Jiangsu Guoxin Jingjiang Power Gerneration Co.Ltd.. Improvement of protection control reliability on coal fired generation unit[J]. Thermal Power Generation, 2013, 42(7): 150-151.
DOI：

ZHONG Zhikun1, CUI Zhanbing2 1.Jiangsu Guoxin Jingjiang Power Gerneration Co.Ltd.. Improvement of protection control reliability on coal fired generation unit[J]. Thermal Power Generation, 2013, 42(7): 150-151. DOI：

摘要

针对火电机组保护控制系统存在的接线质量、信号转换误差、单点测量、信号干扰等问题

提出了将用于机组保护控制的3个模拟量信号分别在DCS内通过限值运算形成3个独立的开关量信号

并分别由3块DCS输出模件采用硬接线送至保护控制器中进行计算等改进方案

以避免因保护信号测点故障等引起的保护误动作

提高机组保护控制系统的可靠性。

Abstract

for such problems occurred in protection control system of thermal power plants as poor wiring quality

signal conversion error

single point measurement

signal interference

an improvement scheme was proposed to avoid protection malfunction caused by measure point failure of protection signals and enhance the reliability of protection control system.In this scheme

three analog signals used for unit protection control were transferred into three independent switch signals through limit operation in DCS.Then the switch signals were sent to the protection control unit by three DCS output modules.

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