Benefit Cost Analysis of Thermal Storage Tank in Thermal Power Plant Considering Wind Power Consumption

doi:10.12096/j.2096-4528.pgt.20109

Abstract

Abstract:

In the projects of combined heat and power, the application of large capacity heat storage can improve the flexibility of power system operation control, so as to enhance the system ability to absorb wind power. To study the necessity of heat storage tank configuration, a cost-benefit model of heat storage tank configuration for thermal power plants was established, and the total revenue of heat storage tank configuration for thermal power plants was calculated by substituting the parameters obtained from the electrothermal comprehensive dispatching model of power systems with heat storage. The simulation example was solved by the mathematical programming solver GUROBI in MATLAB. The simulation results show that there is an optimal capacity of heat storage system to make the overall efficiency best and the model can effectively analyze the necessity of heat storage tank configuration in thermal power plants.

Key words: thermal power plant, thermal storage, heat storage tank, wind power ^consumption, total revenue

CLC Number:

TK 02

Hui ZHANG, Xiufang GU, Yanning CHEN, Zhenpeng LUO, Chen WANG. Benefit Cost Analysis of Thermal Storage Tank in Thermal Power Plant Considering Wind Power Consumption[J]. Power Generation Technology, 2022, 43(4): 664-672.

Figures/Tables 12

References 26

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参数	热电机组	常规机组	风电
装机容量/MW	1 900	900	900
所占比例/%	51.4	24.3	24.3

参数	热电机组	常规机组	风电
装机容量/MW	1 900	900	900
所占比例/%	51.4	24.3	24.3

热电厂参数	数值
单位煤价格/(万元/t)	0.06
排放率G_SO2/(kg/t)	2.7
排放率G_CO2/(kg/t)	1 878.9
排放率G_y/(kg/t)	1.2
SO₂当量δ_SO2/kg	0.95
CO₂当量δ_CO2/kg	20
烟尘当量δ_y/kg	2.18
排污征费指标/(万元/当量)	0.000 12
供暖期天数/天	180

热电厂参数	数值
单位煤价格/(万元/t)	0.06
排放率G_SO2/(kg/t)	2.7
排放率G_CO2/(kg/t)	1 878.9
排放率G_y/(kg/t)	1.2
SO₂当量δ_SO2/kg	0.95
CO₂当量δ_CO2/kg	20
烟尘当量δ_y/kg	2.18
排污征费指标/(万元/当量)	0.000 12
供暖期天数/天	180

蓄热罐参数	数值
单位造价/(万元/m³)	0.3
折现率	0.05
寿命/a	20
低温回水温度/℃	70
高温供水温度/℃	150
蓄热温差ΔT/℃	80
容积率ε	0.9
综合利用效率η	0.95
蓄热损失K(i)	0.005
年维护成本占其建设成本的百分比ξ	0.005