Capacity designing for a combined heat and power plant assisted by water storage tank

FAN Qingwei; LAN Fengchun; LI Wenjie; HUANG Jiasi; CHANG Dongfeng; ZHAI Jia; CAO Hanlin

doi:10.19666/j.rlfd.202005167

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Capacity designing for a combined heat and power plant assisted by water storage tank

更新时间：2025-09-28

- Capacity designing for a combined heat and power plant assisted by water storage tank
- Thermal Power Generation Vol. 50, Issue 3, Pages: 98-105(2021)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 西安西热节能技术有限公司
  3. 中国中煤能源集团有限公司
  4. 华能新能源股份有限公司蒙东分公司
  5. 华能新能源股份有限公司陕西分公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202005167
  CLC： TM621
- Published Online：31 December 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
FAN Qingwei, LAN Fengchun, LI Wenjie, et al. Capacity designing for a combined heat and power plant assisted by water storage tank[J]. Thermal power generation, 2021, 50(3): 98-105.
DOI：

FAN Qingwei, LAN Fengchun, LI Wenjie, et al. Capacity designing for a combined heat and power plant assisted by water storage tank[J]. Thermal power generation, 2021, 50(3): 98-105. DOI： 10.19666/j.rlfd.202005167.

摘要

热电联产机组通过增设储热水罐可以实现热电解耦运行方式

大幅提升供暖季机组运行灵活性

提高新能源消纳能力。以2台机组分别为低压缸零出力供热和打孔抽汽供热项目为例

首先

对热网负荷变化时双机优化运行方式进行研究

发现机组热负荷率最低工况并非辅助服务收益最大工况;其次

对系统增设储热水罐时的最大容量选型依据、系统调峰能力改善特性进行研究

得到储水罐最大容量及调峰能力随热网负荷的变化规律;再次

研究了结构参数对储热水罐选型的影响

得到了储热罐个数与容量的推荐关系;最后

在给定热网负荷时进行储水罐容量的选型分析。结果表明

以中寒期最高热负荷作为选型上限依据较为合理

并且储热容量较小时投资收益比相对较高。

Abstract

For combined heat and power unit

water storage tank is proved to be effective in decoupling heat and power

in improving the unit's operation flexibility and new energy accommodation. In this paper

studies are conducted in a combined heat and power plant with two typical units of low pressure cylinder zero output and holing extraction. Firstly

operation optimization along with the heat net load is conducted which shows a mismatch between the lowest electric output case and the maximum ancillary services revenue case. Secondly

a water storage tank is added to the system

and the maximum capacity and peak regulation ability are studied in detailed

the characteristics between the maximum capacity

peak regulation and heat net load are obtained. Then

the structural parameters of the water tank are considered in designing the capacity. The tank number along with capacity is recommended. Lastly

varying water tank capacities are tested. The maximum heat net load of middle cold period is suitable for the water tank capacity design

and the lower tank capacity means the better investment income ratio.

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