scholarly journals Research on the optimal dispatch of wind power consumption based on combined heat and power with thermal energy storage

2018 ◽  
Vol 152 ◽  
pp. 978-983 ◽  
Author(s):  
Ding Liu ◽  
Chuanzhi Zang ◽  
Peng Zeng
Keyword(s):  
Energy Storage ◽  
Power Consumption ◽  
Wind Power ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Combined Heat And Power ◽  
Optimal Dispatch

Active and Passive Thermal Energy Storage in Combined Heat and Power Plants to Promote Wind Power Accommodation

2017 ◽  
Vol 143 (5) ◽  
pp. 04017037 ◽  
Author(s):  
Yuanhang Dai ◽  
Lei Chen ◽  
Yong Min ◽  
Qun Chen ◽  
Yiwei Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Wind Power ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Power Plants ◽  
Combined Heat And Power

scholarly journals Optimal Dispatch Model Considering Environmental Cost Based on Combined Heat and Power with Thermal Energy Storage and Demand Response

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 817 ◽  
Author(s):  
Weidong Li ◽  
Tie Li ◽  
Haixin Wang ◽  
Jian Dong ◽  
Yunlu Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Wind Power ◽  
Thermal Energy ◽  
Demand Response ◽  
Thermal Energy Storage ◽  
Electrical Energy ◽  
Combined Heat And Power ◽  
Environmental Cost ◽  
Fuel Cost ◽  
Operation Cost

In order to reduce the pollution caused by coal-fired generating units during the heating season, and promote the wind power accommodation, an electrical and thermal system dispatch model based on combined heat and power (CHP) with thermal energy storage (TES) and demand response (DR) is proposed. In this model, the emission cost of CO2, SO2, NOx, and the operation cost of desulfurization and denitrification units is considered as environmental cost, which will increase the proportion of the fuel cost in an economic dispatch model. Meanwhile, the fuel cost of generating units, the operation cost and investment cost of thermal energy storage and electrical energy storage, the incentive cost of DR, and the cost of wind curtailment are comprehensively considered in this dispatch model. Then, on the promise of satisfying the load demand, taking the minimum total cost as an objective function, the power of each unit is optimized by a genetic algorithm. Compared with the traditional dispatch model, in which the environmental cost is not considered, the numerical results show that the daily average emissions CO2, SO2, NOx, are decreased by 14,354.35 kg, 55.5 kg, and 47.15 kg, respectively, and the wind power accommodation is increased by an average of 6.56% in a week.

scholarly journals Efficient Operation Method of Aquifer Thermal Energy Storage System Using Demand Response

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3129
Author(s):  
Jewon Oh ◽  
Daisuke Sumiyoshi ◽  
Masatoshi Nishioka ◽  
Hyunbae Kim
Keyword(s):  
Energy Storage ◽  
Power Consumption ◽  
Thermal Energy ◽  
Demand Response ◽  
Thermal Energy Storage ◽  
Heat Storage ◽  
Storage System ◽  
Total Power ◽  
Operation Method ◽  
Total Power Consumption

The mass introduction of renewable energy is essential to reduce carbon dioxide emissions. We examined an operation method that combines the surplus energy of photovoltaic power generation using demand response (DR), which recognizes the balance between power supply and demand, with an aquifer heat storage system. In the case that predicts the occurrence of DR and performs DR storage and heat dissipation operation, the result was an operation that can suppress daytime power consumption without increasing total power consumption. Case 1-2, which performs nighttime heat storage operation for about 6 h, has become an operation that suppresses daytime power consumption by more than 60%. Furthermore, the increase in total power consumption was suppressed by combining DR heat storage operation. The long night heat storage operation did not use up the heat storage amount. Therefore, it is recommended to the heat storage operation at night as much as possible before DR occurs. In the target area of this study, the underground temperature was 19.1 °C, the room temperature during cooling was about 25 °C and groundwater could be used as the heat source. The aquifer thermal energy storage (ATES) system in this study uses three wells, and consists of a well that pumps groundwater, a heat storage well that stores heat and a well that used heat and then returns it. Care must be taken using such an operation method depending on the layer configuration.

Cost Optimal Strategies of High Temperature Thermal Energy Storage Systems in Combined Heat and Power Applications

2016 ◽  
Author(s):  
Parker Wells ◽  
Karthik Nithyanandam ◽  
Richard Wirz
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Los Angeles ◽  
Natural Gas ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Power Plants ◽  
Combined Heat And Power ◽  
Time Of Day ◽  
Recycled Paper

As variable generation electricity sources, namely wind and solar, increase market penetration, the variability in the value of electricity by time of day has increased dramatically. In response to increase in electricity demand, natural gas “peaker plants” are being added to the grid, and the need for spinning and nonspinning reserves have increased. Many natural gas, and other heat source based, power plants exist as combined heat and power (CHP), or cogeneration, plants. When built for industrial use, these plants are sized and run based on heat needs of an industrial facility, and are not optimized for the value of electricity generated. With the inclusion of new, less expensive thermal energy storage (TES) systems, the heating and electricity usage can be separated and the system can be optimized separately. The use of thermal energy storage with CHP improves system economics by improving efficiency, reducing upfront capital expenditures, and reducing system wear. This paper examines the addition of thermal energy storage to industrial natural gas combined heat and power (CHP) plants. Here a case study is presented for a recycled paper mill near Los Angeles, CA. By implementing thermal energy storage, the mill could decouple electric and heat production. The mill could take advantage of time-of-day pricing while producing the constant heat required for paper processing. This paper focuses on plant economics in 2012 and 2015, and suggests that topping cycle industrial CHP plants could benefit from the addition of high temperature (400–550°C) energy storage. Even without accounting for the California incentives associated with implementing advanced energy storage technologies and distributed generation, the addition of energy storage to CHP plants can drastically reduce the payback period below the 25 year expected economic lifetime of a plant. Thus thermal energy storage can make more CHP plants economically viable to build.

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