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HYBRID RENEWABLE ENERGY SYSTEMS
Hybrid renewable energy systems are becoming popular for remote area power generation applications due to advances in renewable energy technologies and subsequent rise in prices of petroleum products. A hybrid energy system usually consists of two or more renewable energy sources used together to provide increased system efficiency as well as greater balance in energy supply. Hybrid power systems can provide a good solution for such problems because they integrate renewable energy along with the traditional power plants. Among several alternative technologies, wind-and solar-based energy is given special importance to realize. These are the best sources on conventional means of energy production from many aspects, but total dependence on meteorological conditions (wind speed, solar radiation, temperature, etc.) of wind and solar systems, as they are not completely reliable in every instant. In this study, to ensure the supply of the load in all of the cases, a combined system is applied for our country.
Hybrid Renewable Energy System
IRJET, 2022
Power demand is on the rise for some time now and with climate change, depleting fossil fuels and increasing global warming the use of renewable energy sources, like solar, wind, geothermal, ocean etc., to meet the escalating power demand in a sustainable, costeffective, and environment-friendly way is inevitable. However, the stability and availability of a single renewable source is not guaranteed. Combination of different sources making a hybrid renewable system are now being explored to overcome this problem. Wind turbine system combined with solar photovoltaic (PV), as a hybrid system, can play a significant role to overcome our future energy demands with a cost-effective energy system. This paper presents a hybrid system that uses both solar as well as wind energy to give a stable power supply all-round the year.
Hybrid Power Plant with Storage System: University Research Station
Periodica Polytechnica Electrical Engineering and Computer Science, 2019
The article presents a brief overview of renewable energy sources, microgrids and energy storage problems. The construction and utilisation of university research station to study the operation of a hybrid power plant with an energy storage unit has been described. The tested hybrid power plant consists of a photovoltaic panel and a wind turbine. There are two possible areas of research, one is when the microgrid is connected to the main grid and second when it functions independently as a stand-alone setup. In addition, the model allows to study the characteristics of photovoltaic cells, examine the dependence of generated power on the time, season and angle of the solar panel. In this article, the current-voltage characteristics and influence of solar azimuth angle on cell power, dependence of wind on power generated by the wind turbine, and study of off-grid work of power plant are presented.
HYBRID RENEWABLE ENERGY SYSTEMS: CASE STUDY-BASED ANALYSIS CONSIDERING VARYING SEASONAL CONDITIONS
Hybrid renewable energy systems are becoming popular for remote area power generation applications due to advances in renewable energy technologies and subsequent rise in prices of petroleum products. A hybrid energy system usually consists of two or more renewable energy sources used together to provide increased system efficiency as well as greater balance in energy supply. Hybrid power systems can provide a good solution for such problems because they integrate renewable energy along with the traditional power plants. Among several alternative technologies, wind-and solar-based energy is given special importance to realize. These are the best sources on conventional means of energy production from many aspects, but total dependence on meteorological conditions (wind speed, solar radiation, temperature, etc.) of wind and solar systems, as they are not completely reliable in every instant. In this study, to ensure the supply of the load in all of the cases, a combined system is app...
Hybrid power systems – An effective way of utilising primary energy sources
Renewable Energy, 2009
Nowadays in many countries the increase of generating capacity takes place in small units within the framework of so-called distributed power industry (distributed generation -DG, embedded generation), and among them in hybrid power systems (HPS). In this paper we present our experience of the design, build and exploitation of HPS in the Institute of Electrical Power Engineering, Warsaw University of Technology. The following major subjects are considered:
Hybrid Power System (HPS) is an energy system with combination of different regenerative energy sources like Solar, Wind, Geo-Thermal, Biomass and several others to achieve energy sustainability. This paper investigates the feasibility of grid connected and stand-alone hybrid energy system to meet electric load requirement of a community or organization, by utilizing the available resources. Potentiality of different energy sources like solar, wind, bio-gas, etc. along with currently used energy sources is studied thoroughly by taking a case study of Kathmandu University central campus, located at Dhulikhel, Nepal. Technical and economic analysis of on-grid and off-grid hybrid system is performed to get optimum model that supply continuous energy to the end user. Furthermore, the possibility of net metering with national utility has been analysed. The main objective of this study is to identify the suitable energy mixed model, that provide the sustainable energy supply to the university, and recommend the possible energy generators to be added for fulfilling the continuously increasing load demand. The load profile of several years of the University is taken into consideration for forecasting the power demand. The findings of the research show that system when adopted to hybrid system can meet up to 55% of the load by renewable resources. Maximum renewable fraction is found to be 0.603 and maximum renewable penetration of 812%.
Simulation of hybrid renewable systems in rural areas
Electronic Imaging
Renewable Energy (RE) sources are being used nowadays to overcome grid instability. A different hybrid model is used to balance energy production, reducing excess energy where PV (Photovoltaic) production is highly stochastic due to fluctuations in irradiance and temperature. The main problem of renewable energy sources is uncertainty. The velocity is also not stable according to the location in terms of wind energy. A technical and financial plan can mitigate the maintenance cost in a hybrid system. A hybrid renewable energy system is a combination of different energy sources. The sources are considered a combination of complete renewable or renewable and other conventional energy sources such as diesel generators, utility grids, etc. In the research, the technical and financial plan can be implemented in sustainable management after installing the hybrid system; monitoring the production is also a big problem nowadays. The research method is general, and the test scenario has been based in Mozambique. A predictive model can maintain a consistent power flow of renewable sources such as photovoltaic, wind, utility grid, and inverter systems. The renewable sources data are variant according to their location, and it has an impact in terms of energy production. In a modern sustainable framework, considerable data control is required for administration, miniature networks, and environmentally friendly power supplies. The target of this research is to introduce simple technical planning for the community living in a rural area and for the local electricity provider or the consultants to plan a hybrid system in areas and collect the data and understand simple data analysis techniques so that the future production, storage capacity, excess energy can be identified. The research is a theoretical plan before the practical installation of a hybrid system. It is important to have a proper plan before the establishment of such a system otherwise the inappropriate plan causes extra costs and loss of energy which is not an idea criterion to implement renewable energy-based hybrid systems. We will discuss the importance of data collection from the hybrid system and later analyze the data to observe the energy production, excess energy, annual energy cost, maintenance cost, etc. Data visualization is important to monitor the correlation between all necessary parameters of the design which can assure better stability of a system. Data analysis is also an important part nowadays because of forecasting or predicting the future outcome of the system. This theoretical approach can be implemented after practical installation on-site and the technical plan, visualization, data analysis methods can be used also for the project.
The efficient and rational use of produced energy with the help of unconventional sources is one of actual energetic problems, with stress upon the aspects regarding stocking the energy in excess and deficiencies caused by intermittencies in producing energy caused to weather conditions. The success of renewable energy depends greatly upon the optimization of storage methods of energy excess with its returning in the system whenever necessary, and also upon the technological solutions which will be adopted to cover the intermittencies in producing energy and satisfaction of energy necessities of “peak load”. The batteries could seem to be the right choice, also globally, the development of energetic systems based upon the use of hydrogen as a tampon medium of energy storage, is the central point of different demonstrative projects which will allow validation of these technologies for energy storage as an alternative to classic ones. In the present paper the global influences upon the systems are analyzed, in which the two energy storage methods are integrated – batteries, respectively hydrogen produced from the excess of energy by electrolysis and reintroduced in the system by the fuel cell. The storage mediums serve an autonomous hybrid system, having an economical energy consumption and placement in Cluj - Napoca, Romania.
Hybrid renewable energy system to maximize the electrical power production
2016 International Renewable and Sustainable Energy Conference (IRSEC), 2016
Hybridization of solar and wind energy to supply an electrical load demand is considered as a realistic approach aiming to take the benefit of these power generation sources and facilitate their integration for a stand-alone and grid-connected application. However, an under-sizing of the hybrid system mays disturbs the operation of all-electric equipment; on the contrary, an over-sizing may turn higher the investment cost of the hybrid system. Therefore an appropriate size of the hybrid renewable plant could help to guarantee the minimal cost of integration with the maximum power reliability. A specific design under TRNSYS and Matlab has been used to assess weather condition of solar irradiation, wind speed, and temperature for the selected referee cities, after, a determined load demand profile of a laboratory prototype is used to describe daily energy consumption. Then a dynamic simulation of energy output performance for different hybrid configuration is analyzed during one year; as a result, only one optimized configuration is chosen for each referee cities with respect of minimal investment cost and maximal power reliability. Finally, a techno-economic investigation of the chosen optimized solution is presented as a result and discussed, as well as an environmental assessment. Keywords Hybrid renewable energy sources (HRES) • Photovoltaic (PV) • Wind turbine (WT) • Hybrid system (HS) • Typical meteorological year (TMY2) • Economic and environmental assessment (EEA)
TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2013
The recent popularity of alternative energy technologies is mainly promoted by the increasing awareness of environmental concerns as well as the economic impacts of the depleting fossil fuel reserves. Among several alternative technologies, wind-and solar-based energy have been given specific importance with government-based support for providing a cost-effective structure to realize better penetration of such environmentally friendly sources in the energy market. Even these sources are advantageous over the conventional means of energy production from many aspects, a main drawback being the total dependence on the meteorological conditions (wind speed, solar radiation, temperature, etc.) of the wind and solar systems, as they are not fully reliable to satisfy a particular load demand variation at each instant. Thus, some form of backup is always required that will shift the use of the energy from the moments of renewable-based nondispatchable production to the load demand-based dispatchable production. In this study, to ensure the supply of the load in all of the cases, an electrolyzer-fuel cell-based 'hydrogen regenerative' system is applied as main backup, together with a small-sized battery group to pick up transients. Thus, a hybrid structure including wind, solar, and hydrogen energy technologies is provided. The artificial neural network controller approach is selected for the hybrid system's energy management and its performance is examined and evaluated during different case studies that reflect the variations of the meteorological conditions in different seasons. It is aimed with this study to provide constructive suggestions to upcoming researchers interested in the energy management issue in hybrid systems.