摘要
为消纳风电,供热机组在承担供热任务要求的同时需要尽可能参与电网调峰。供热机组配置溴化锂吸收式热泵,在回收循环水余热的同时扩大了机组的供热能力,其热电关系需要进一步分析确定。本文建立了国产某300 MW供热机组模型,分析其加装热泵前后热电关系的变化。结果表明:在配置2台单机容量为46.6 MW溴化锂吸收式热泵后,供热负荷增加了39 MW,同时在给定热负荷下电负荷可变范围最大可扩大9%;实际运行中,循环水温度变化对机组最小发电量影响较大,而热网回水温度对机组热电关系几乎无影响。
In order to solve the problem of wind power accommodation, the heat supply units need to participate in peak regulation of the power grid as much as possible while undertaking the requirements for heating task. The heat supply unit is equipped with a Li Br absorption heat pump, which can recover the residual heat of the circulating water and increase the heat capacity of the unit. The thermoelectric relationship needs to be further analyzed and determined. A domestic model of a 300 MW heating unit is established to analyze the change in the thermoelectric relationship before and after the installation of the heat pump. The results show that, after the installation of two 46.6 MW Li Br absorption heat pumps, the heating load increases by 39 MW. At the same time, the maximum variable load range of the electric load at a given heat load can be increased by 9%. In actual operation, the change of circulating water temperature has a great influence on the minimum generating capacity of the unit, while the return water temperature of the heating network has little effect on the unit＇s thermoelectric relationship.
作者
王兴国
蒋奎振
韩中合
卢盛阳
杨海生
WANG Xingguo;JIANG Kuizhen;HAN Zhonghe;LU Shengyang;YANG Haisheng(State Grid Hebei Energy Technologies Service Co.,Ltd.,Shijiazhuang 050090,China;State Grid Hebei Electric Power Company Limited Research Institute,Shijiazhuang 050022,China;School of Energy and Power Engineering,North China Electric Power University,Banding 071003,China)
出处
《热力发电》
CAS
北大核心
2018年第8期79-84,共6页
Thermal Power Generation
基金
国家科技支撑计划项目(2014BAA06B01)~~
关键词
供热机组
吸收式热泵
热电关系
模型验证
变负荷范围
调峰
运行参数
heat supply unit
absorption heat pump
thermoelectric relationship
model validation
variable load range
peak regulation
operating parameters
