Simulation and prediction of deaerator water level for a 1000MW unit under FCB condition

DENG Shaoxiang; HUO Min; HU Niansu

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Simulation and prediction of deaerator water level for a 1000MW unit under FCB condition

更新时间：2025-09-28

- Simulation and prediction of deaerator water level for a 1000MW unit under FCB condition
- Thermal Power Generation Vol. 44, Issue 2, Pages: 101-105(2015)
- 作者机构：
  
  1. 广东电网公司电力科学研究院
  2. 武汉大学动力与机械学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621
- Published：2015
- 稿件说明：
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DENG Shaoxiang, HUO Min, HU Niansu. Simulation and prediction of deaerator water level for a 1000MW unit under FCB condition[J]. Thermal power generation, 2015, 44(2): 101-105.
DOI：

DENG Shaoxiang, HUO Min, HU Niansu. Simulation and prediction of deaerator water level for a 1000MW unit under FCB condition[J]. Thermal power generation, 2015, 44(2): 101-105. DOI：

摘要

机组快速甩负荷(FCB)工况下除氧器水位直接影响机组的安全性。为此

以某超超临界1 000 MW机组为研究对象

基于Matlab软件的Simulink组件建立了除氧器模型

并进行了机组75%及50%负荷下的FCB仿真试验。仿真结果与组件实测试验数据对比发现

仿真的除氧器水位的变化趋势及其最高值、最低值以及达到最高、最低值的时间与实际值基本一致

表明所建除氧器模型有效且可行。基于所建模型对机组100%负荷FCB工况下的除氧器水位进行预测

结果表明在配置大容量旁路且除氧器水箱具有足够的贮水量的条件下

通过对热力系统、控制系统等的完善

机组能够实现100%负荷FCB功能

可将除氧器的水位控制在安全范围内。

Abstract

Deaerator water level directly affects the unit safety under fast cut back(FCB)condition.Thus

by taking an ultra supercritical 1 000 MW unit as the research object

its deaerator model was established on the basis of the Simulink function of Matlab software.Furthermore

the simulation tests under 75%and50%load FCB condition were conducted.The simulation tests results was proved to be compatible with the actual data in water level trend and time.On this basis

the deaerator water level under 100%load FCB test was forecasted.The predicted results show that the water-level can be controlled whinin the safe range with enough bypass system and water in deaerator.

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