Technical and economic analysis of the coupling of optical axis heat supply and thermal storage peaking of 200 MW unit

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

He, Xiao-Hong^1 ; Gao, Xin-Yong^1 ; Wang, Hong-Shi^1

Huadian Electric Power Research Institute, West Lake Science and Technology Park, No. 10, Xiyuan 1st Road, Hangzhou

310030, China^1

关键词: Condensing units;    Economic benefits;    Heating capacity;    Investment recoveries;    Optimal combination;    Storage technology;    Thermal power;    Thermal storage;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/4/042042/pdf
DOI  :  10.1088/1755-1315/267/4/042042

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Based on two 200MW three-cylinder and three-exhaust steam condensing units, the economic analysis of the unit connected pipe extraction, optical shaft heating and heat storage technology is carried out. Through these analyses, the coupling of the Optical shaft heating and the heat storage technology can not only give full play to the heating capacity of the unit, but also realize the "thermoelectric decoupling" and improve the flexibility of thermal power. Under certain external heat load demand, the power generation load can be reduced to 88MW when optical axis heating (only 44% of rated load). Besides, there is an optimal combination scheme. The annual policy subsidy is up to 424 million Yuan and the investment recovery period of the project is 5.6 years. The economic benefit of this project is obvious. It is recommended that the technology be applied to areas with a peak grid subsidy policy.