scholarly journals Optimal Operation of a Hybrid Power System as an Island Microgrid in South-Korea

2021 ◽  
Vol 13 (9) ◽  
pp. 5022
Author(s):  
Yeon-Ju Choi ◽  
Byeong-Chan Oh ◽  
Moses Amoasi Acquah ◽  
Dong-Min Kim ◽  
Sung-Yul Kim
Keyword(s):  
Renewable Energy ◽  
South Korea ◽  
Power System ◽  
Optimal Power Flow ◽  
Renewable Energy Sources ◽  
Optimal Operation ◽  
Photovoltaic System ◽  
Hybrid Power System ◽  
Power Distribution System ◽  
Hybrid Power

The microgrid is a power distribution system that supplies power from distributed generation to end-users. Demonstration projects and R&D regarding microgrids are currently in development in several advanced countries. In South Korea, renewable energy-based microgrid demonstration projects are carried out mainly as island or university campus grids. These R&D efforts aim to popularize microgrid systems in South Korea while considering the limited land availability, which impedes the widespread distribution of photovoltaic systems and the microgrid market’s growth. This study presents a floating photovoltaic system configured as an island microgrid combined with a hybrid power system. The floating photovoltaic system is configured on an idle water body integrated with an existing pumped hydroelectric system. The integration of a current pumped hydroelectric system minimizes a battery energy storage requirement, which compensates for the renewable energy sources’ intermittent power output. We evaluate the optimal power flow of the setup using a reliability index to ensure a stable power supply within the standalone microgrid and maximize the supply power range according to the demand response.

Retrofitted Hybrid Power System Design With Renewable Energy Sources for Buildings

2012 ◽  
Vol 3 (4) ◽  
pp. 2174-2187 ◽  
Author(s):  
Y. Jaganmohan Reddy ◽  
Y. V. Pavan Kumar ◽  
K. Padma Raju ◽  
Anilkumar Ramsesh
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
System Design ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Hybrid Power System ◽  
Hybrid Power

A Multi-Agent Control for Energy Management in PV/Wind/Fuel Cell/Battery Hybrid Power System

2014 ◽  
Vol 573 ◽  
pp. 235-241
Author(s):  
T. Bogaraj ◽  
J. Kanakaraj ◽  
C. Maria Jenisha
Keyword(s):  
Renewable Energy ◽  
Fuel Cell ◽  
Power System ◽  
Energy Management ◽  
Renewable Energy Sources ◽  
Multi Agent System ◽  
Agent System ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Multi Agent

The usage of renewable energy systems increases worldwide due to extinction of conventional sources and also the absence of some serious environmental effects such as global warming, ozone layer depletion etc. These renewable power systems are not able to satisfy the load continuously due to seasonal availability of the resources. A Hybrid Power System (HPS) formed with renewable energy sources are a solution to provide power for stand-alone electrical loads. However, the energy management in HPS is quite complex as it relies on a central controller. This paper proposes a distributed Energy Management System (EMS) to control the energy flow in the PV/Wind/Fuel Cell/Battery HPS based on multi-agent system (MAS) technology. With this concept, a HPS is seen as a collection of different elements called agents, collaborates to reach a global coordination to satisfy the demand in the system. The Algorithm of the Multi-Agent System technique for HPS has been implemented using MATLAB/Simulink environment. The results show that the algorithm is effectively working for a HPS to provide power to the load and control power flow between various elements of the system.

scholarly journals Non-isolated multiple input multilevel output DC-DC converter for hybrid power system

2020 ◽  
Vol 19 (2) ◽  
pp. 635
Author(s):  
Ameen M. Al-Modaffer ◽  
Amer A. Chlaihawi ◽  
Husam A. Wahhab
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
High Efficiency ◽  
Renewable Energy Sources ◽  
Input Voltage ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Multiple Input ◽  
Single Input ◽  
High Conversion Ratio

<p><span>The utilization of multisources of energy in a compact and an effective power system gains an essential role in power electronic industry. As such, the design and simulation of a new non-isolated Multiple Input Multilevel Output (MIMLO) DC-DC converter for hybrid power system is presented. The MIMLO DC-DC converter can be integrated in renewable energy, such as fuel cells, wind turbines and photovoltaic arrays etc, to get the best output voltages. The MIMLO DC-DC converter powers the load from renewable energy sources through the independence of the availability of other sources. The proposed topology has been simulated by using MATLAB/Simulink software to testify the performance control operation of the Multiple Input Multilevel Output DC-DC converter. The results of the carried-out simulation favor the usage of multi-input voltage, rather than a single input voltage. The MIMLO design has the advantages of a simple configuration, reduced number of switches, fewer components, high efficiency, and high conversion ratio. The Multilevel Output DC-DC converter provides high voltage transfer with low size inductors, reduction of losses, low stress voltage on switches and diodes. </span></p>

scholarly journals Optimal Design of Independent Mini Hydro-photovoltaic-battery-diesel Hybrid Power System for Erin-ijesha Water Fall, Nigeria

2018 ◽  
pp. 1-11
Author(s):  
Olumuyiwa Oludare Fagbohun ◽  
Bankole Adebanji ◽  
Micheal O. Oke
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Rural Areas ◽  
Renewable Energy Sources ◽  
Simulation Models ◽  
Energy System ◽  
Solar Irradiation ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Better Than

In order to provide a sustainable energy system, especially in rural areas where grid electricity is not economically or geographically feasible, renewable energy sources appear to be one of the most effective solutions. However, the fluctuating nature and the high cost of kWhr units produced make the system unreliable and not easily affordable to the rural dwellers. This paper discussed the feasibility of renewable energy hybrid system and proposed a reliable independent Hybrid Power System (HPS) for rural application in Nigeria. Erin-Ijesha a typical rural village in Osun State, Nigeria was used as a case study. Solar irradiation, the hydro potential of the waterfall and load patterns were collected and analyzed for the study area. The electrical load for the village was estimated through the use of questionnaires. HOMER energy modeling software was used to develop the simulation models. The optimized results showed that mini-hydro-photovoltaic-battery combination with Cost of Energy, COE of $0.218/kWh is better than any other combinations considered in the work. It was revealed that purchasing electricity from the grid is better than any other hybrid combinations in terms of COE at $0.121/kWh. Nevertheless, from the result obtained, the HPS is considered cost-efficient and reliable in such rural areas especially where grid extension is geographically or economically infeasible.

Control of a Hybrid Power System Containing Different Kinds of Renewable Energy Sources

2018 ◽  
Vol 7 (7) ◽  
pp. 19-25
Author(s):  
Boris M. ANTONOV ◽  
◽  
Nikolai N. BARANOV ◽  
Konstantin V. KRYUKOV ◽  
Yurii K. ROZANOV ROZANOV ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Hybrid Power System ◽  
Hybrid Power

scholarly journals Functional and diagnostic model of a hybrid power system using renewable energy sources

2019 ◽  
Vol 68 (3) ◽  
pp. 133-146
Author(s):  
Stanisław Duer
Keyword(s):  
Artificial Intelligence ◽  
Renewable Energy ◽  
Power System ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Diagnostic Model ◽  
Technical Diagnostics ◽  
Diagnostic Analysis ◽  
Hybrid Power System ◽  
Hybrid Power

The article presents the problem of building a diagnostic base of knowledge for a hybrid power system for the needs of the organization of the diagnosis process. The basis for obtaining the diagnostic in-formation, regarding devices of the hybrid power system, is functional and diagnostic analysis of the tested object. The effect of the diagnostic development’s process is a model of functional and diagnostic structure, determined sets of basic elements, and diagnostic signals along with assigned standard signals. Keywords: technical diagnostics, diagnostic reasoning, multivalent logic, artificial intelligence

scholarly journals Standalone hybrid power system using homer software optimal case sizing of ferraguig (North West of Algeria)

2019 ◽  
Vol 8 (3) ◽  
pp. 287
Author(s):  
B. Afif ◽  
B. Merabet ◽  
A. Benhamou ◽  
A. Chaker
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Rural Areas ◽  
Renewable Energy Sources ◽  
Electricity Production ◽  
Multiple Sources ◽  
Hybrid Power System ◽  
North West ◽  
Remote Areas ◽  
Hybrid Power

Rural areas suffer from high costs of grid extensions obliging institutions to provide for other remedies for consumers, like using generators (GE) diesel often considered as economic and reliable solutions, but at the detriment of some order environment pollution and users convenience. Furthermore, the continuous decline in GEs prices based on a renewable energy (RE) and the increasing reliability of these systems have lead to a greater use of renewable energy sources for power generation in remote areas. A property which limits the use of renewable energy is related to the variability of resources. Fluctuations in load according to annual or daily periods are not necessarily correlated to the resources. In remote areas, the preferred option is the coupling between multiple sources, such as wind turbines and solar panels, this coupling is called hybrid power system. Algeria’s geographic location presents several advantages for the development and use of renewable energy, namely, solar energy and wind energy. In addition, Algeria has huge deposits of natural gas, 98% electricity comes from gas. Therefore, currently, the production of electricity from renewable energies primarily depends on their competitiveness with economic gas. Studied technological feasibility and economic viability of the hybrid system (PV/fuel) electrification project in a school located in Ferraguig succeed to reduce high costs, energy dependence, fuel supply problem, complicated/expensive maintenance, low lifetime, impossibility of 24 hours electricity production and waste oil management issues, by using renewable energy. HOMER model is used here to size a proposed system and determine an optimum configuration.

scholarly journals Study of Renewable Energy Sources Capacity and Loading Using Data Logger for Sizing of Solar-wind Hybrid Power System

2013 ◽  
Vol 11 ◽  
pp. 1048-1053 ◽  
Author(s):  
M. Ikhsan ◽  
Agus Purwadi ◽  
Nanang Hariyanto ◽  
Nana Heryana ◽  
Yanuarsyah Haroen
Keyword(s):  
Solar Wind ◽  
Renewable Energy ◽  
Power System ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Data Logger ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Using Data
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