Analysis and optimization on run back control strategy for unit with CFB boiler

WANG Fei; HE Jinqi Northwest Power Construction Commissioning Institute

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Analysis and optimization on run back control strategy for unit with CFB boiler

更新时间：2025-09-28

- Analysis and optimization on run back control strategy for unit with CFB boiler
- Thermal Power Generation Vol. 42, Issue 2, Pages: 74-81(2013)
- 作者机构：
  
  西北电力建设调试研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK32
- Published：2013
- 稿件说明：
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WANG Fei, HE Jinqi Northwest Power Construction Commissioning Institute. Analysis and optimization on run back control strategy for unit with CFB boiler[J]. Thermal power generation, 2013, 42(2): 74-81.
DOI：

WANG Fei, HE Jinqi Northwest Power Construction Commissioning Institute. Analysis and optimization on run back control strategy for unit with CFB boiler[J]. Thermal power generation, 2013, 42(2): 74-81. DOI：

摘要

在分析神华神东电力郭家湾电厂配循环流化床(CFB)锅炉2×300MW机组辅机故障减负荷(RB)控制策略的基础上

取消了一次风机RB功能

保留了二次风机、引风机以及给水泵RB功能

并进行了优化。在引风机和给水泵RB试验过程中

炉膛压力最大为822Pa

汽包水位最低至-148mm

均满足机组RB的要求。同时

为了防止机组RB时的设备过电流故障发生

在控制上应设置输出指令的变化率;在实现设备的过电流闭锁增保护功能时宜将设备电流信号作为控制判断依据。

Abstract

On the basis of analyzing the run back(RB) control strategy of the 2×300 MW unit with CFB boilers in a power plant

the RB function of the primary air fan was canceled

and that of the secondary air fan

induced draft fan and feed water pump were reserved and optimized.During the RB tests for induced draft fan and feed water pump

the maximum furnace pressure was 822 Pa and the lowest steam drum level was-148 mm

which satisfied the requirements of unit RB.Moreover

to prevent the device overcurrent fault during the unit RB

the control should set the change rate of output instruction;it is better to set the device current as the control criterion when realizing the device overcurrent block increase protection.

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