Dynamic modeling and optimization on cold end system of a 660MW power unit during transient processes

WANG Jianhua; WANG Chaoyang; SHI Feng; LIU Ming; CHONG Daotong

doi:10.19666/j.rlfd.201901063

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Dynamic modeling and optimization on cold end system of a 660MW power unit during transient processes

更新时间：2025-09-28

- Dynamic modeling and optimization on cold end system of a 660MW power unit during transient processes
- Thermal Power Generation Vol. 48, Issue 10, Pages: 97-104(2019)
- 作者机构：
  
  1. 国网河南省电力公司电力科学研究院
  2. 河南恩湃高科集团有限公司
  3. 西安交通大学动力工程多相流国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201901063
  CLC： TM621
- Published Online：29 September 2019，
  
  Published：2019
- 稿件说明：
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WANG Jianhua, WANG Chaoyang, SHI Feng, et al. Dynamic modeling and optimization on cold end system of a 660MW power unit during transient processes[J]. Thermal power generation, 2019, 48(10): 97-104.
DOI：

WANG Jianhua, WANG Chaoyang, SHI Feng, et al. Dynamic modeling and optimization on cold end system of a 660MW power unit during transient processes[J]. Thermal power generation, 2019, 48(10): 97-104. DOI： 10.19666/j.rlfd.201901063.

摘要

为研究燃煤机组变负荷瞬态过程中的能耗特性

探索机组瞬态运行过程中的节能空间

本文基于GSE软件搭建了某超临界660 MW燃煤机组动态仿真模型

并耦合电厂冷端动态仿真模型

最终完成了整个热力系统的仿真建模。在仿真模型的基础上

对机组在75%～100%THA负荷区间内变负荷过程中瞬态过程的能耗特性进行了研究。结果表明:机组变负荷过程中

存在最优切泵负荷点

使得机组在变负荷瞬态过程中供电煤耗率最小;研究范围内

不同负荷点切泵

最大标准煤耗率差值为0.14 g/(k W·h)。

Abstract

To study the energy consumption characteristics of coal-fired units during load cycling transient processes

the energy-saving space during transient operation of the power units was explored. By applying the GSE software

a dynamic simulation model of a supercritical 660 MW coal-fired unit was established

coupling the coldend dynamic simulation model of the power plant

and the simulation modeling of the entire thermal system was finished finally. On the basis of this dynamic model

the energy consumption characteristics of the unit during load cycling between 75% THA and 100% THA transient processes were studied. The results show that

there is an optimal switching pump load rate which makes the energy consumption of the unit minimum during the load cycling transient processes. Within the scope of the study

the maximum difference in standard coal consumption rate is 0.14 g/(k W·h) for switching the pump in different load rates.

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