Optimization of load control strategy for a supercritical 600MW unit boiler

YANG Ping; GAO Longjun; WANG Xiaogang; ZHANG Changqing

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Optimization of load control strategy for a supercritical 600MW unit boiler

更新时间：2025-09-28

- Optimization of load control strategy for a supercritical 600MW unit boiler
- Thermal Power Generation Vol. 44, Issue 8, Pages: 113-115(2015)
- 作者机构：
  
  1. 华能集团技术创新中心
  2. 西安热工研究院有限公司
  3. 西安交通大学电信学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2015
- 稿件说明：
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YANG Ping, GAO Longjun, WANG Xiaogang, et al. Optimization of load control strategy for a supercritical 600MW unit boiler[J]. Thermal power generation, 2015, 44(8): 113-115.
DOI：

YANG Ping, GAO Longjun, WANG Xiaogang, et al. Optimization of load control strategy for a supercritical 600MW unit boiler[J]. Thermal power generation, 2015, 44(8): 113-115. DOI：

摘要

针对某超临界600 MW机组锅炉煤质变化、磨煤机一次风量测量不准确

使得锅炉负荷难以自动控制的问题

在分析给煤量跟踪给水流量和给水流量跟踪给煤量2种锅炉负荷控制策略的基础上

采用在控制中增加煤质自校正功能的方法

对给水流量跟踪给煤量锅炉负荷控制策略进行了优化。实际应用结果表明

在自动发电控制(AGC)方式且机组大幅度变负荷工况下

锅炉负荷控制系统能够以1.0~1.5%/min的速率响应AGC指令

并将主蒸汽压力、温度控制在±0.4 MPa和±4℃内

满足DL/T 774—2004标准的要求。

Abstract

In a supercritical 600 MW unit

the coal quality changes and the primary air flow measurement of the coal mill is inaccurate

so the boiler load can not be automatically controlled.Against this problem

two boiler load control strategies were analyzed

the feed coal following the feed water mode and the feed water following the feed coal mode.On this basis

a boiler load control strategy with coal quality automatic calibration function was applied to optimize the feed water and feed fuel system.The results show that

in automatic generation control(AGC)mode with large load variations

the boiler load control system can respond the AGC load demand with speed of 1.0~1.5%/min

and can constrain the main steam pressure and temperature controlling error within ±0.4 MPa and ±4 ℃ respectively

which meets the corresponding target aim in the DL/T 774—2004.

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