Analysis and optimization of RB control strategy for a sub-critical 300MW unit

GAO Chunyu; ZHOU Qian; YANG Shang

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Analysis and optimization of RB control strategy for a sub-critical 300MW unit

Thermal Power Generation Vol. 42, Issue 9, Pages: 121-124(2013)

更新时间：2025-09-28

- Analysis and optimization of RB control strategy for a sub-critical 300MW unit
- 作者机构：
  
  华北电力科学研究院有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.7
- Published：2013
- 稿件说明：
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GAO Chunyu, ZHOU Qian, YANG Shang. Analysis and optimization of RB control strategy for a sub-critical 300MW unit[J]. Thermal Power Generation, 2013, 42(9): 121-124.
DOI：

GAO Chunyu, ZHOU Qian, YANG Shang. Analysis and optimization of RB control strategy for a sub-critical 300MW unit[J]. Thermal Power Generation, 2013, 42(9): 121-124. DOI：

摘要

以某300MW机组为例

在分析机组原辅机故障减负荷(RB)控制策略的基础上

对100%汽动给水泵RB时联锁启动电动给水泵、送/引风机RB等控制逻辑进行了优化

如在RB工况时根据总燃料量设定总风量

在一次风机RB控制逻辑中设计一次风动叶超驰开和炉膛压力优降回路等。试验结果表明

该方案使机组能够在RB时稳定、快速地减负荷。

Abstract

The original run back(RB)control strategy of a 300MW unit was analyzed.On this basis

the logic of interlock start motor driven feed water pump during RB control of the 100%steam driven feed water pump was optimized.Moreover

optimization on RB control logic of the forced draft fan and induced draft fan were also performed

such as setting the gross input air volume according to the total fuel amount under the RB condition

designing the primary air fan override open and furnace press priority low circuit in primary air fan RB control logic.The results showed that

the optimized unit can lower the load steadily and promptly during RB.

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