Optimal operation and location of heat pumps in the integrated energy systems

2017 ◽  
Author(s):  
Yuchen Song ◽  
Weihao Hu ◽  
Zhenyuan Zhang ◽  
Rui Hu ◽  
Qi Huang ◽  
...  
Keyword(s):  
Energy Systems ◽  
Heat Pumps ◽  
Optimal Operation ◽  
Integrated Energy Systems

scholarly journals Energy Management Scheme in Hierarchical Integrated Energy Systems with Coalition

2021 ◽  
Vol 3 (1) ◽  
pp. 34-43
Author(s):  
Nayana
Keyword(s):  
Lagrange Function ◽  
Evolutionary Process ◽  
Energy Systems ◽  
High Heat ◽  
Optimal Operation ◽  
Middle Level ◽  
Utility Company ◽  
Integrated Energy Systems ◽  
Management Scheme ◽  
The Impact

Often, coalitions are formed by the hierarchical integrated energy systems (HIESs) and their evolutionary process which is driven by the benefits of stakeholders and consolidate energy consumers and producers. Several literature have failed to analyze the operation of HIES under the impact of multiple coalitions. At the lower level, multiple users, in the middle level, the multiple distributed energy stations (DESs) and at the upper level, one natural gas and one electricity utility company structure is used for analyzing the HIES operation with a trading scheme. The Lagrange function is used for deriving the optimal operation strategy based analytical function for each probable coalition and each market participant comprising of users and the DESs. It is evident from the results that in a single coalition, the profits linked to other DESs will decrease while increasing the profit of one DES with technological enhancements, users show an aversion towards DESs with high generation coefficient while they are attracted to the ones that enable reduction of heat and electricity price. Maintaining their isolation is preferred by high heat and electricity consuming DESs at the same energy price. Other coalitions and their operations are not affected by the change in parameters of one coalition.

scholarly journals An Approach to Short-Term Control of Integrated Energy Systems with Load-Controlled Consumers

2019 ◽  
Vol 217 ◽  
pp. 01001
Author(s):  
Valery Stennikov ◽  
Evgeny Barakhtenko ◽  
Oleg Voitov
Keyword(s):  
Storage Systems ◽  
Energy Systems ◽  
Electric Heating ◽  
Energy System ◽  
Heat Pumps ◽  
Short Term ◽  
Integrated Energy Systems ◽  
Heating And Cooling ◽  
Functional Features ◽  
Heat Loads

Modern cities and industrial centers boast a developed energy infrastructure including fuel, electric, heating, and cooling systems. The integration of many separate system into a single technological complex can provide new functional capabilities, the application of more advanced technologies for operation, and the establishment of integrated energy systems. Such systems have a multidimensional structure of functional features and properties of development. The control of integrated energy systems with load-controlled consumers represents an urgent and a rather challenging task. The paper is concerned with an approach to short-term control of integrated energy systems with load-controlled consumers. Planning the daily electricity and heat loads is performed for an integrated energy system, including energy storage systems and electric water heaters, electrical shiftable loads of individual consumers as well as power generation by additional electricity and heat sources (PV systems, wind turbines, heat pumps). The optimal daily profiles are obtained based on the initial profiles of electricity and heat loads, photovoltaic generation and optimal profiles of using electricity and heat storage systems and shiftable load. Optimal daily electricity and heat load profiles differ greatly from the initial ones, which provides a reduction in the energy costs for the consumer.

Modeling and optimal operation of community integrated energy systems: A case study from China

2018 ◽  
Vol 230 ◽  
pp. 1242-1254 ◽  
Author(s):  
Chengshan Wang ◽  
Chaoxian Lv ◽  
Peng Li ◽  
Guanyu Song ◽  
Shuquan Li ◽  
...  
Keyword(s):  
Energy Systems ◽  
Optimal Operation ◽  
Integrated Energy Systems

scholarly journals Optimal Power Dispatch in Energy Systems Considering Grid Constraints

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 192
Author(s):  
Alejandro Rubio ◽  
Frank Schuldt ◽  
Peter Klement ◽  
Karsten von Maydell
Keyword(s):  
Unit Commitment ◽  
Control Strategies ◽  
Energy Systems ◽  
Energy System ◽  
Heat Pumps ◽  
Optimal Operation ◽  
Unit Commitment Problem ◽  
Pump Operation ◽  
Study Planning ◽  
Electrical Vehicles

As a consequence of the increasing share of renewable energies and sector coupling technologies, new approaches are needed for the study, planning, and control of modern energy systems. Such new structures may add extra stress to the electric grid, as is the case with heat pumps and electrical vehicles. Therefore, the optimal performance of the system must be estimated considering the constraints imposed by the different sectors. In this research, an energy system dispatch optimization model is employed. It includes an iterative approach for generating grid constraints, which is decoupled from the linear unit commitment problem. The dispatch of all energy carriers in the system is optimized while considering the physical electrical grid limits. From the considered scenarios, it was found that in a typical German neighborhood with 150 households, a PV penetration of ∼5 kWp per household can lead to curtailment of ∼60 MWh per year due to line loading. Furthermore, the proposed method eliminates grid violations due to the addition of new sectors and reduces the energy curtailment up to 45%. With the optimization of the heat pump operation, an increase of 7% of the self-consumption was achieved with similar results for the combination of battery systems and electrical vehicles. In conclusion, a safe and optimal operation of a complex energy system is fulfilled. Efficient control strategies and more accurate plant sizing could be derived from this work.

scholarly journals Optimal Power Dispatch in Energy Systems Considering Grid Constraints

2021 ◽  
Author(s):  
Alejandro Rubio ◽  
Frank Schuldt ◽  
Peter Klement ◽  
Karsten von Maydell
Keyword(s):  
Unit Commitment ◽  
Control Strategies ◽  
Energy Systems ◽  
Energy System ◽  
Optimization Method ◽  
Heat Pumps ◽  
Optimal Operation ◽  
Unit Commitment Problem ◽  
Pump Operation ◽  
Electrical Vehicles

As a consequence of the increasing share of renewable energies and sector coupling technologies, new approaches are needed for the study, planning, and control of modern energy systems. Such new structures may add extra stress to the electric grid, as is the case with heat pumps and electrical vehicles. Therefore, the optimal performance of the system must be estimated considering the constraints imposed by the different sectors. In this research, a dispatch optimization method with an iterative grid constraint generation, decoupled from the linear unit commitment problem, is employed. From the considered scenarios, it was found that in a typical German neighborhood with 150 households, PV penetration of ∼5kWp per household can lead to curtailment of ∼60MWh per year due to line loading. Furthermore, the proposed method eliminates grid violations due to the addition of new sectors reducing the curtailment up to 60%. With the optimization of the heat pump operation, an increase of 7% of the self-consumption was achieved with similar results for the combination of battery systems and electrical vehicles. In conclusion, a safer and optimal operation of a complex energy system is fulfilled. Safer control strategies and more accurate plant sizing could be derived from this work.

scholarly journals Optimization of integrated energy system for combined cooling, heating and power supply of new energy based on energy storage

2021 ◽  
Vol 2121 (1) ◽  
pp. 012015
Author(s):  
Tieyan Zhang ◽  
Junbao Yang ◽  
Yaru Wang ◽  
Min Li ◽  
Dawei Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Power Supply ◽  
Energy Systems ◽  
System Optimization ◽  
Energy System ◽  
Optimal Operation ◽  
Integrated Energy Systems ◽  
New Energy ◽  
Integrated Energy System ◽  
Combined Cooling

Abstract With the development of science and technology, people also pay more and more attention to the development of new energy. Although there are also many studies on integrated energy systems now, integrated energy systems containing energy storage should also be further studied. This paper proposes an optimization of integrated energy system for combined cooling, heating and power supply of new energy based on energy storage, which analyzes the gas turbine, absorption refrigerating machine, electric refrigerator, photovoltaic power generation units, wind turbine and the work characteristics of the energy storage device. In this paper, an integrated energy system optimization model of new energy cogeneration with energy storage equipment is established. An example shows that the integrated energy system with energy storage can effectively solve the independent decoupling operation relationship among cool, heat and electricity. At the same time, the proposed model can also solve the energy interaction among cool, heat and electricity. In this way, the optimal operation of the integrated energy system can be realized.

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