scholarly journals Economic Dispatch of Multi-Energy System Considering Load Replaceability

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 570 ◽  
Author(s):  
Tao Zheng ◽  
Zemei Dai ◽  
Jiahao Yao ◽  
Yufeng Yang ◽  
Jing Cao
Keyword(s):  
Energy Conversion ◽  
Interaction Mechanism ◽  
Energy Systems ◽  
Energy System ◽  
Economic Benefits ◽  
The Other ◽  
Energy Conversion Systems ◽  
Scheduling Strategies ◽  
Design Scheduling ◽  
Planning And Operation

By integrating gas, electricity, and cooling and heat networks, multi-energy system (MES) breaks the bondage of isolated planning and operation of independent energy systems. Appropriate scheduling of MES is critical to the operational economy, and it is essential to design scheduling strategies to achieve maximum economic benefits. In addition to the emergence of energy conversion systems, the other main novelty of MES is the multivariate of load, which offers a great optimization potential by changing load replaceability (flexibly adjusting the composition of loads). In this paper, by designing load replaceability index (LRI) of composite load in MES, its interaction mechanism with scheduling optimum is systematically analyzed. Through case studies, it is proven that the optimum can be improved by elevating load replaceability.

Evolutionary Multi-Objective Optimization in Energy Conversion Systems

2011 ◽  
pp. 333-363
Author(s):  
Andrea Toffolo
Keyword(s):  
Energy Conversion ◽  
Optimization Problems ◽  
Energy Systems ◽  
Energy System ◽  
Research Field ◽  
Future Research ◽  
Multi Objective Optimization ◽  
Multi Objective ◽  
Pareto Optimal Set ◽  
Energy Conversion Systems

The research field on energy conversion systems presents a large variety of multi-objective optimization problems that can be solved taking full advantage of the features of evolutionary algorithms. In fact, design and operation of energy systems can be considered in several different perspectives (e.g., performance, efficiency, costs, environmental aspects). This results in a number of objective functions that should be simultaneously optimized, and the knowledge of the Pareto optimal set of solutions is of fundamental importance to the decision maker. This chapter proposes a brief survey of typical applications at different levels, ranging from the design of component detail to the challenge about the synthesis of the configuration of complex energy conversion systems. For sake of simplicity, the proposed examples are grouped into three main categories: design of components/component details, design of overall energy system, operation of energy systems. Each multi-objective optimization problem is presented with a short background and some details about the formulation. Future research directions in the field of energy systems are also discussed at the end of the chapter.

scholarly journals Optimal Design Model of the Energy Systems in Iron and Steel Enterprises

2019 ◽  
Vol 9 (22) ◽  
pp. 4778 ◽  
Author(s):  
Zhengbiao Hu ◽  
Dongfeng He ◽  
Kai Feng ◽  
Pingze Liu ◽  
Yongwei Jia
Keyword(s):  
Energy Source ◽  
Energy Conversion ◽  
Optimization Design ◽  
Design Method ◽  
Energy Systems ◽  
Optimization Methods ◽  
Energy System ◽  
Economic Benefits ◽  
Steel Plant ◽  
Energy Sources

In steel enterprises, the design of energy systems mainly depends on experience and lacks systematic optimization methods. Therefore, it is of great significance to propose an overall optimization design method for the energy system of steel enterprises. In this paper, a linear model is proposed to select the energy conversion equipment types and distribute energy sources with the aim of maximizing the economic benefits of an energy system. In the model, the choice of energy conversion technology and the distribution of energy source are considered comprehensively. For the S steel plant, the case analysis results show that under the condition of keeping the original energy conversion equipment unchanged and optimizing the distribution of energy source, the economic benefits of the energy system can be increased by 15.77 CNY/t steel, and under the conditions of optimizing the distribution schemes of the energy conversion equipment types and energy sources, the economic benefits of the energy system can be increased by 180.26 CNY/t steel. In addition, the effects of different energy conversion equipment configurations, different energy sources prices and different pollution cost standards on the steel plant energy economic benefits were analyzed.

scholarly journals ECOS 2012

2012 ◽  
Keyword(s):  
Energy Conversion ◽  
Carbon Capture ◽  
Industrial Ecology ◽  
Process Integration ◽  
Cost Optimization ◽  
Energy Systems ◽  
Water Desalination ◽  
Diagnosis And Prognosis ◽  
Energy Conversion Systems ◽  
Optimization And Simulation

The 8-volume set contains the Proceedings of the 25th ECOS 2012 International Conference, Perugia, Italy, June 26th to June 29th, 2012. ECOS is an acronym for Efficiency, Cost, Optimization and Simulation (of energy conversion systems and processes), summarizing the topics covered in ECOS: Thermodynamics, Heat and Mass Transfer, Exergy and Second Law Analysis, Process Integration and Heat Exchanger Networks, Fluid Dynamics and Power Plant Components, Fuel Cells, Simulation of Energy Conversion Systems, Renewable Energies, Thermo-Economic Analysis and Optimisation, Combustion, Chemical Reactors, Carbon Capture and Sequestration, Building/Urban/Complex Energy Systems, Water Desalination and Use of Water Resources, Energy Systems- Environmental and Sustainability Issues, System Operation/ Control/Diagnosis and Prognosis, Industrial Ecology.

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 Research on Interactive Scenarios and Mechanisms of Energy Supply and Use Modules of Park-level Integrated Energy System

2021 ◽  
Vol 236 ◽  
pp. 02007
Author(s):  
Zhao Pengxiang ◽  
Li Na ◽  
Li Zhiyuan ◽  
Wang Nan
Keyword(s):  
Energy Supply ◽  
Interaction Mechanism ◽  
Energy Systems ◽  
Clean Energy ◽  
Energy System ◽  
Distributed Energy ◽  
Energy Internet ◽  
Energy Storage Technology ◽  
Integrated Energy System ◽  
Smart Grid Technology

The integrated energy system can realize the complementary advantages of multiple energy sources and effectively solve the problem of low integrated energy efficiency of traditional energy systems. Carrying out research on the interactive scenarios and mechanisms of the energy supply and use modules of the integrated energy system is conducive to promoting the development of clean energy and promoting the indepth integration of energy Internet and distributed energy technology, smart grid technology, and energy storage technology. First, it summarizes the scenarios of the energy supply and use modules of the integrated energy system, and analyzes the interaction mechanism and paths of the energy supply and use modules of the integrated energy system on this basis.

Three Phase Matrix Converter for Variable Speed Wind Energy System

2014 ◽  
Vol 622 ◽  
pp. 181-190
Author(s):  
Ayadathil Jamna ◽  
Venkatesan Jamuna ◽  
Rama Reddy Sathy
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Output Voltage ◽  
Energy System ◽  
Matrix Converter ◽  
Simulation Software ◽  
Variable Speed ◽  
Constant Frequency ◽  
Wind Energy Conversion ◽  
Energy Conversion Systems

In this paper, a direct ac-ac converter suitable for a variable speed wind energy conversion system is proposed. In wind energy conversion systems, due to the variation in wind speed, there will be variation in shaft speed and hence the frequency of the output will be fluctuating at the generator terminal. A direct ac-ac converter (Matrix converter) is capable of providing simultaneous control of output voltage and frequency at the generator output. In this paper the direct transfer function method is developed, to create a constant voltage and constant frequency output from a variable output voltage and frequency and the same is simulated using MATLAB/SIMULINK simulation software.

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