scholarly journals Principles of Transformation in an Integrated Energy System when Applying the Concept of an Energy Hub

2021 ◽  
Vol 24 (3) ◽  
pp. 88-96
Author(s):  
E.V. Serdyukova
Keyword(s):  
Economic Effect ◽  
Energy System ◽  
Matlab Simulink ◽  
Energy Hub ◽  
Cost Of Energy ◽  
Integrated Energy System ◽  
Network Overload ◽  
Storage Technologies ◽  
Or Organization ◽  
The Cost

The cost of electricity and heat for the population, enterprises and organizations in Russia has increased several times in recent years. An urgent issue for consumers was the search for opportunities to save money when paying for energy. The heating fee is about a quarter of the total amount of the utility bill. The tariff, the cost of one unit of energy (Gcal/m2) spent on heating a room, increases annually. Accordingly, the amount of expenses for public services in each individual family or organization also increases. The principles of transformation of various forms of energy in an integrated energy system based on the concept of an energy hub are considered. It is proposed to use the capabilities of the MATLAB/Simulink software. The MATLAB/Simulink software library does not contain complex elements with a structure with multiple inputs and multiple outputs. Complex models of energy hub blocks form a special additional library. These models implement such functions as energy storage, energy conversion and summation of various types of energy. There are two types of energy transformation elements presented in the article. An illustrative example is presented that shows the economic effect of converting electricity into heat energy at preferential tariffs during the night period. The calculation of the quantitative potential of electricity for conversion is performed. Studies have shown that a flexible combination of various energy carriers using conversion and storage technologies preserves the potential for various system improvements: the total cost of energy can be reduced, the reliability of the power system is increased, network overload can be reduced, transmission losses are reduced.

scholarly journals Cooperative Trading Mechanism and Satisfaction-Based Profit Distribution in a Multi-Energy Community

2021 ◽  
Vol 9 ◽  
Author(s):  
Jian Wang ◽  
Ning Xie ◽  
Valentin Ilea ◽  
Cristian Bovo ◽  
Hao Xin ◽  
...  
Keyword(s):  
Social Welfare ◽  
Energy System ◽  
Energy Integration ◽  
Profit Distribution ◽  
Energy Hub ◽  
Usage Patterns ◽  
Integrated Energy System ◽  
Trading Mechanism ◽  
Energy Community ◽  
The Cost

With the development of distributed generation and demand-side response, traditional consumers are now converted into prosumers that can actively produce and consume electricity. Moreover, with the help of energy integration technique, prosumers are encouraged to form a multi-energy community (MEC), which can increase their social welfare through inside multi-energy sharing. This paper proposes a day-ahead cooperative trading mechanism in a MEC that depends on an energy hub (EH) to couple electricity, natural gas, and heat for all prosumers. The model of the traditional uncooperative local integrated energy system (ULIES) is also built as a comparison. A satisfaction-based profit distribution mechanism is set according to prosumers’ feelings about the extra cost they save or extra profit they gain in MEC compared with that in ULIES. Finally, case studies are set to analyze the utility of MEC in enlarging social welfare, after considering the effects of prosumers’ electricity usage patterns and buy-and-sell prices in retail market. The results of satisfaction-based profit distribution are also analyzed to verify that it can save the cost or increase the profit of each prosumer and EH.

scholarly journals Decoupled Optimization of Integrated Energy System Considering CHP Plant Based on Energy Hub Model

2017 ◽  
Vol 142 ◽  
pp. 2683-2688 ◽  
Author(s):  
Yue Wang ◽  
Kai Hou ◽  
Hongjie Jia ◽  
Yunfei Mu ◽  
Lewei Zhu ◽  
...  
Keyword(s):  
Energy System ◽  
Energy Hub ◽  
Integrated Energy System ◽  
Hub Model

scholarly journals Techno-Economic Feasibility Study of Investigation of Renewable Energy System for Rural Electrification in South Algeria

2018 ◽  
Vol 8 (5) ◽  
pp. 3421-3426 ◽  
Author(s):  
F. Chermat ◽  
M. Khemliche ◽  
A. E. Badoud ◽  
S. Latreche
Keyword(s):  
Greenhouse Gas Emission ◽  
Electrical Energy ◽  
Energy System ◽  
Economic Feasibility ◽  
Maintenance Cost ◽  
Management Algorithm ◽  
Cost Of Energy ◽  
The Cost ◽  
Operation And Maintenance Cost ◽  
Different Sources

This work aims to consider the combination of different technologies regarding energy production and management with four possible configurations. We present an energy management algorithm to detect the best design and the best configuration from the combination of different sources. This combination allows us to produce the necessary electrical energy for supplying habitation without interruption. A comparative study is conducted among the different combinations on the basis of the cost of energy, diesel consumption, diesel price, capital cost, replacement cost, operation, and maintenance cost and greenhouse gas emission. Sensitivity analysis is also performed.

scholarly journals Security Analysis of Regional Integrated Energy System Integrating Energy Storage

2021 ◽  
Vol 257 ◽  
pp. 01006
Author(s):  
Kaicheng Liu ◽  
Ying Guo ◽  
Dan Wang ◽  
Dezhi Li ◽  
Guixiong He
Keyword(s):  
Energy Storage ◽  
Security Analysis ◽  
System Security ◽  
Energy System ◽  
Improve Energy Efficiency ◽  
Energy Hub ◽  
Integrated Energy System ◽  
Security Region ◽  
The Impact ◽  
Practical Security

Regional integrated energy system (RIES) can realize multi-energy conversion and complementation so as to improve energy efficiency, which also brings more security risks. The regional integrated energy system security region (RIESSR) is a security analysis method to describe the safe area for the operating points of RIES based on the N-1 guideline. As a controllable device, energy storage (ES) which is installed in the energy hub (EH) plays an important role in improving system security. Therefore, this paper establishes the model of practical security region of RIES integrating energy storage, and studies the impact of ES on total supply capability (TSC) and practical security boundary. Finally, a specific case is set to simulate and verify the model. By comparing the scenario with ES and the scenario without ES, it can be seen that the solution result of TSC increases and the security region extends across quadrant when the RIES is integrated with ES system. The capacity and location of the ES also impact on TSC and RIESSR.

scholarly journals Cost-Optimized Heat and Power Supply for Residential Buildings: The Cost-Reducing Effect of Forming Smart Energy Neighborhoods

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5093
Author(s):  
Christoph Bahret ◽  
Ludger Eltrop
Keyword(s):  
Emission Reduction ◽  
Residential Buildings ◽  
Linear Optimization ◽  
Clean Energy ◽  
Energy System ◽  
Optimization Approach ◽  
Rural Environments ◽  
Neighborhood Scale ◽  
Storage Technologies ◽  
The Cost

The Clean Energy for all Europeans Package by the EU aims, among other things, to enable collective self-consumption for various forms of energy. This step towards more prosumer-based and decentralized energy systems comes at a time when energy planning at a neighborhood scale is on the rise in many countries. It is widely assumed that—from a prosumer’s cost-perspective—shared conversion and storage technologies supplying more than a single building can be advantageous. However, it is not clear whether this is the case generally or only under certain conditions. By analyzing idealized building clusters at different degrees of urbanization (DOU), a linear-optimization approach is used to study the cost difference between shared energy infrastructure (smart energy neighborhoods, SENs) and individually planned buildings. This procedure is carried out for various emission reduction targets. The results show, that with higher emission reduction targets the advantage of SENs increases within rural environments and can reach up to 16%. Nevertheless, there are constellations in which the share of energetic infrastructure among buildings does not lead to any economic advantages. For example, in the case of building clusters with less than four buildings, almost no cost advantage is found. The result of this study underlines the importance of energy system planning within the process of urban planning.

scholarly journals A Cost Model for PV Based Renewable Energy Projects

2021 ◽  
pp. 10-23
Author(s):  
M. A. El-Bayoumi ◽  
Marwa M. Ibrahim
Keyword(s):  
Renewable Energy ◽  
Success Factors ◽  
Cost Model ◽  
Energy System ◽  
Grid Systems ◽  
Renewable Energy System ◽  
Cost Of Energy ◽  
Photo Voltaic ◽  
Risk Cost ◽  
The Cost

The energy from renewable sources had always been perceived as free or at least lower-cost energy, with its sourcing from natural sources such as solar radiation and wind energy. In actual the cost breakdown of renewable energy would exceed that of traditional energy sources in almost all cases. This study attempts to produce a cost model for renewable energy systems. The model takes into account different requirements and site variations into account. In this paper, elements of the cost model Renewable Energy System (RES) especially, photo-voltaic solar systems, have been investigated. Cost items are presented alongside a to-do checklist for the new Photo-Voltaic (PV) solar energy system. The goal of this study is to construct a model that would cover the cost sources as well as bring to attention the unexpected sources of cost variations that include all possible cost items of a new solar renewable energy system. The feasibility of the new system is expressed in terms of Total Cost (T.C) and Cost of Energy (COE). The model can evaluate the feasibility of off-grid as well as on-grid systems. The model investigated properly as well as an empirical analysis and verified through results comparison with reviewed case studies. The results revealed that the cost of off-grid systems is higher than the cost of on-grid systems due to the cost of batteries as well as the cost of standby generators. So, it would be more feasible to use an off-grid system only in remote or isolated areas. Risk Cost lists, ranking and success factors of new renewable projects are exhibited.

Energy visibility of a modeled photovoltaic/diesel generator set connected to the grid

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Majid K. Abbas ◽  
Qusay Hassan ◽  
Marek Jaszczur ◽  
Zuhair S. Al-Sagar ◽  
Ali N. Hussain ◽  
...  
Keyword(s):  
Rural Areas ◽  
Solar Irradiance ◽  
Energy System ◽  
Photovoltaic System ◽  
Weather Data ◽  
Economic Optimization ◽  
Diesel Generator ◽  
Time Step ◽  
Cost Of Energy ◽  
The Cost

Abstract The paper presents a technical and economic analysis for two energy systems (conventional and renewable) with grid connection. The investigation was carried out using an experimental measurement for the desired load and weather data (solar irradiance and ambient temperature), were 5.1 kWh the daily energy consumption as measured and 4.6 kWh/m2/day the annual average of the solar irradiance. The simulation process was done by using MATLAB and HOMER software at a 1 min time step resolution. The economic optimization objective presented for two energy system scenarios (i) photovoltaic/grid and (ii) diesel/grid, takes into account the economic aspects and component prices based on the Iraqi market and regulations. The diesel generator, very popular in rural areas, is designed to work during the same period as the photovoltaic system (only during day hours). The yearly operating hours were recorded at 4380 h/year, and energy generation was approx. 2349 kWh/year while fuel consumption was 1826 L/year. The results showed that the photovoltaic system in scenario (i) can generate about 7895 kWh, and for the diesel generator in scenario (ii), it can generate approximately 2346 kWh. Furthermore, for scenario (i) the levelized net present cost is $1079 and the cost of energy is about $0.035/kWh, while for scenario (ii) the levelized net present cost is $12,287 and the cost of energy is $0.598/kWh. The use of solar energy is highly recommended compared to diesel generators due to the lowest cost and delivery of energy to the grid. Furthermore, it can capture carbon dioxide by about 5295 kg/year.

scholarly journals Performance and Feasibility Analysis of a Grid Interactive Large Scale Wind/PV Hybrid System based on Smart Grid Methodology Case Study South Part – Jordan

2015 ◽  
Vol 4 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Qais H. Alsafasfeh
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Hybrid System ◽  
Large Scale ◽  
Energy System ◽  
Renewable Energy Resources ◽  
Efficient System ◽  
Power Sources ◽  
Cost Of Energy ◽  
The Cost

Most recent research on renewable energy resources main one goal to make Jordan less dependent on imported energy with locally developed and produced solar power, this paper discussed the efficient system of Wind/ PV Hybrid System to be than main power sources for south part of Jordan, the proposed hybrid system design based on Smart Grid Methodology,  the solar energy will be installed on top roof of  electricity subscribers across the Governorate of Maan, Tafila, Karak and Aqaba and the wind energy will set in one site by this way the capital cost for project will be reduced also the  simulation result show   the feasibility  is a very competitive and feasible cost . Economics analysis of a proposed renewable energy system was made using HOMER simulation and evaluation was completed with the cost per kilowatt of EDCO company, the net present cost is $2,551,676,416, the cost of energy is 0.07kWhr with a renewable fraction of 86.6 %.

scholarly journals Research Results for the Tornado Wind Energy System: Analysis and Conclusions

1985 ◽  
Vol 107 (1) ◽  
pp. 78-87
Author(s):  
E. W. Jacobs
Keyword(s):  
Wind Energy ◽  
System Analysis ◽  
Energy System ◽  
Power Coefficient ◽  
Research Results ◽  
Air Supply ◽  
Cost Of Energy ◽  
Energy System Analysis ◽  
Wind Energy System ◽  
The Cost

The Tornado Wind Energy System (TWES) concept utilizes a wind-driven vortex confined by a hollow tower to create a low-pressure core intended to serve as a turbine exhaust reservoir. The turbine inlet flow is provided by a separate ram air supply. Numerous experimental and analytical research efforts have investigated the potential of the TWES as a wind energy conversion system (WECS). The present paper summarizes and analyzes much of the research to date on the TWES. A simplified cost analysis incorporating these research results is also included. Based on these analyses, the TWES does not show any significant promise of improving on either the performance or the cost of energy attainable by conventional WECS. The prospects for achieving either a system power coefficient above 0.20 or a cost of energy less than $0.50/kWh (1979 dollars) appear to be poor.

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