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.

scholarly journals Research on Battery Energy Storage as Backup Power in the Operation Optimization of a Regional Integrated Energy System

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2990 ◽  
Author(s):  
Jianfeng Li ◽  
Dongxiao Niu ◽  
Ming Wu ◽  
Yongli Wang ◽  
Fang Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Simulation Optimization ◽  
Energy Systems ◽  
Energy System ◽  
Power Source ◽  
Battery Energy Storage ◽  
Operation Optimization ◽  
Integrated Energy Systems ◽  
Integrated Energy System ◽  
Battery Energy

Recently, integrated energy systems have become a new type of energy supply model. It is clear that integrated energy systems can improve energy efficiency and reduce costs. However, the use of a battery energy storage system (BESS) as a backup power source will affect the operating costs of a regional integrated energy system (RIES) in different situations. In this paper, a regional integrated energy system including wind turbines, photovoltaics, gas turbines and battery energy storage was introduced. In order to obtain the minimum operation cost, an operation optimization model was built. The schedule plans of each unit were optimized by a moth flame optimization (MFO) algorithm. Finally, three different scenarios were proposed for the simulation optimization. The simulation optimization results show that when the BESS is used as a backup power source, the operating cost of the system and the resulting pollutant emissions are less than the diesel generator (DG) set. Therefore, it is worthwhile to use BESS instead of DG as the backup power source in RIES.

scholarly journals Optimal Configuration of Multi-type Energy Storage for Integrated Energy System Considering Multi-energy Trading With Load Substitution

2021 ◽  
Vol 237 ◽  
pp. 02016
Author(s):  
Jun Wang ◽  
Wei Du ◽  
Dongmei Yang ◽  
Guoxin He ◽  
Xiaochen Zhang
Keyword(s):  
Energy Storage ◽  
Energy Systems ◽  
Energy System ◽  
Economic Benefits ◽  
Optimal Configuration ◽  
Configuration Model ◽  
Energy Trading ◽  
Integrated Energy Systems ◽  
Integrated Energy System ◽  
The Impact

How to consider the impact of load substitution on user-side participating in multi-energy trading on system operation when configuring multi-type energy storage (MES) is an urgent problem that needs to be solved to improve the economics and energy efficiency of the integrated energy systems (IES). This paper presents an optimal configuration method of MES considering multi-energy trading with load substitution based on the characteristics of different energy supply seasons. Firstly, the multi-energy trading framework and MES configuration principle are proposed based on the structure of the IES. Secondly, a MES optimal configuration model for IES considering multi-energy trading with load substitution is established, then the IES trading strategies and MES planning schemes are solved. Finally, the proposed method is verified by an example. The results show that the proposed method reduces the MES configuration cost by 8.9%. It can be seen that the MES configuration method proposed in this paper is helpful to repair the limitations of energy storage configuration research in IES and improve the economic benefits of the system.

scholarly journals Multi-Time Scale Economic Optimization Dispatch of the Park Integrated Energy System

2021 ◽  
Vol 9 ◽  
Author(s):  
Peng Li ◽  
Fan Zhang ◽  
Xiyuan Ma ◽  
Senjing Yao ◽  
Zhuolin Zhong ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Time Scales ◽  
Time Scale ◽  
Energy Systems ◽  
Energy System ◽  
Optimal Operation ◽  
Utilization Efficiency ◽  
Integrated Energy System ◽  
Operation Cost ◽  
Different Time Scales

The park integrated energy system (PIES) plays an important role in realizing sustainable energy development and carbon neutral. Furthermore, its optimization dispatch can improve the energy utilization efficiency and reduce energy systems operation cost. However, the randomness and volatility of renewable energy and the instability of load all bring challenges to its optimal operation. An optimal dispatch framework of PIES is proposed, which constructs the operation models under three different time scales, including day-ahead, intra-day and real-time. Demand response is also divided into three levels considering its response characteristics and cost composition under different time scales. The example analysis shows that the multi-time scale optimization dispatch model can not only meet the supply and demand balance of PIES, diminish the fluctuation of renewable energy and flatten load curves, but also reduce the operation cost and improve the reliability of energy systems.

scholarly journals Multi-Scenario Physical Energy Storage Planning of Integrated Energy Systems Considering Dynamic Characteristics of Heating Network and Demand Response

2021 ◽  
Vol 9 ◽  
Author(s):  
Xin Deng ◽  
Yixin Huang ◽  
Yuge Chen ◽  
Changming Chen ◽  
Li Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Dynamic Characteristics ◽  
Energy System ◽  
Integrated Energy Systems ◽  
Equipment Construction ◽  
Physical Energy ◽  
Proposed Model ◽  
Integrated Energy System ◽  
Node Network

The configuration of energy storage in the integrated energy system (IES) can effectively improve the consumption rate of renewable energy and the flexibility of system operation. Due to the high cost and long cycle of the physical energy storage construction, the configuration of energy storage is limited. The dynamic characteristics of the heating network and the demand-side response (DR) can realize the space-time transfer of energy. Although there is no actual energy storage equipment construction, it plays a similar role to physical energy storage and can be considered as virtual energy storage in IES planning. In this paper, a multi-scenario physical energy storage planning model of IES considering the dynamic characteristics of the heating network and DR is proposed. To make full use of the energy storage potential of the proposed model, the virtual energy storage features of the dynamic heating characteristics of the heating network and DR are analyzed at first. Next, aiming at the uncertainty of wind turbine (WT) and photovoltaic (PV) output, the scenario analysis method is used to describe the wind and photovoltaic power output with different probabilities. Finally, an electrothermal IES with an IEEE 33-node network and a 26-node heating network serves as an example to verify the effectiveness of the proposed model. The case study shows that the proposed model effectively reduces the physical energy storage configuration and achieves the economic trade-off between the investment cost and the operation cost.

scholarly journals Holistic Simulation Approach for Optimal Operation of Smart Integrated Energy Systems under Consideration of Resilience, Economics and Sustainability

2021 ◽  
Vol 6 (11) ◽  
pp. 150
Author(s):  
Kai Hoth ◽  
Tom Steffen ◽  
Béla Wiegel ◽  
Amine Youssfi ◽  
Davood Babazadeh ◽  
...  
Keyword(s):  
Energy Management ◽  
Dynamic Models ◽  
Energy Systems ◽  
Energy System ◽  
Optimal Operation ◽  
Distributed Resources ◽  
Holistic Model ◽  
Future System ◽  
Integrated Energy System ◽  
Operational Concept

The intermittent energy supply from distributed resources and the coupling of different energy and application sectors play an important role for future energy systems. Novel operational concepts require the use of widespread and reliable Information and Communication Technology (ICT). This paper presents the approach of a research project that focuses on the development of an innovative operational concept for a Smart Integrated Energy System (SIES), which consists of a physical architecture, ICT and energy management strategies. The cellular approach provides the architecture of the physical system in combination with Transactive Control (TC) as the system’s energy management framework. Independent dynamic models for each component, the physical and digital system, operational management and market are suggested and combined in a newly introduced co-simulation platform to create a holistic model of the integrated energy system. To verify the effectiveness of the operational concept, energy system scenarios are derived and evaluation criteria are suggested which can be employed to evaluate the future system operations.

scholarly journals Optimal Planning of Integrated Energy Systems Based on Coupled CCHP

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2621 ◽  
Author(s):  
Xiaofeng Dong ◽  
Chao Quan ◽  
Tong Jiang
Keyword(s):  
Power Generation ◽  
Energy Use ◽  
Clean Energy ◽  
Energy System ◽  
Power Lines ◽  
Gas Pipelines ◽  
Integrated Energy Systems ◽  
Integrated Energy System ◽  
Gas Price ◽  
Combined Cooling

With the widespread attention on clean energy use and energy efficiency, the integrated energy system (IES) has received considerable research and development. This paper proposed an electricity-gas IES optimization planning model based on a coupled combined cooling heating and power system (CCHP). The planning and operation of power lines and gas pipelines are considered. Regarding CCHP as the coupled hub of an electricity-gas system, the proposed model minimizes total cost in IES, with multistage planning and multi-scene analyzing. Renewable energy generation is also considered, including wind power generation and photovoltaic power generation. The numerical results reveal the replacing and adding schemes of power lines and gas pipelines, the optimal location and capacity of CCHP. In comparison with conventional separation production (SP), the optimization model which regards CCHP as the coupled hub attains better economy. At the same time, the influence of electricity price and natural gas price on the quantities of purchasing electricity and purchasing gas in the CCHP system is analyzed. According to the simulation result, a benchmark gas price is proposed, which shows whether the CCHP system chooses power generation. The model results and discussion demonstrate the validity of the model.

scholarly journals Application of blockchain in integrated energy system transactions

2020 ◽  
Vol 165 ◽  
pp. 01014
Author(s):  
Jianhua Liu ◽  
Shengbo Sun ◽  
Zheng Chang ◽  
Bo Zhou ◽  
Yongli Wang ◽  
...  
Keyword(s):  
Energy Systems ◽  
Energy System ◽  
Peer To Peer ◽  
Energy Trading ◽  
Integrated Energy Systems ◽  
Blockchain Technology ◽  
Centralized Management ◽  
Trading Model ◽  
Integrated Energy System ◽  
Management Method

Blockchain technology is the underlying technology of Bitcoin, which is fair, transparent and decentralized. The integrated energy system has the characteristics of open interconnection, user-centered and distributed peer-to-peer sharing, and its energy trading model will also be developed centrally to distributed. The characteristics of blockchain technology make it naturally applicable to energy transactions in integrated energy systems. This article first analyzes the characteristics of the integrated energy system market and summarizes the participants in the market. Then, based on the existing research and analysis, a blockchain-based energy transaction architecture is designed, and a weakly centralized management method is introduced. finally, the problems and challenges faced by the application of blockchain in energy transactions are analyzed.

scholarly journals Research on flexibility analysis of integrated energy system

2021 ◽  
Vol 257 ◽  
pp. 02005
Author(s):  
Xie Han ◽  
Li Qifen ◽  
Yang Yongwen ◽  
Song Lifei ◽  
Ning Ning ◽  
...  
Keyword(s):  
Energy Systems ◽  
Energy System ◽  
Flexibility Analysis ◽  
Integrated Energy Systems ◽  
Network Load ◽  
Integrated Energy System

Regarding the research on the flexibility of the integrated energy system, firstly, this paper explains the necessity of flexibility for the development of the integrated energy system, and analyses the features of flexibility including the characteristics, the role, and the quantitative factors, which provides a basis for research on flexibility of integrated energy systems. Based on the above characteristics, this article explores the resources that can provide system flexibility in all aspects of the integrated energy system “source-network-load-storage”, and analyzes and evaluates their flexibility.

Integrated Solar Energy System Optimization

1982 ◽  
Vol 104 (4) ◽  
pp. 310-316 ◽  
Author(s):  
S. K. Young
Keyword(s):  
Linear Programming ◽  
Solar Energy ◽  
Energy Systems ◽  
System Optimization ◽  
Energy System ◽  
General Methodology ◽  
Integrated Energy Systems ◽  
Programming Techniques

The widespread utilization of solar energy entails the design of integrated energy systems incorporating both solar and conventional technologies. This paper presents a general methodology which uses linear programming techniques to optimize the subsystem sizing, performance, and economics of integrated energy systems.

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