Review Article DESIGNING AND STUDY STANDALONE HYBRID ENERGY SYSTEM: FOR TECHNICAL INSTITUTES (original) (raw)
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Optimization investigation of a stand-alone hybrid energy system design in Kirkuk technical college
In this paper a methodology has been developed for optimum planning of hybrid PV, Wind and diesel generator system with some battery backup in Kirkuk Technical College in Iraq. The local solar radiation, wind data and components database from different manufactures are analyzed and simulated in HOMER model to assess the technical and economic viability of the integrated system. Performance of each component was evaluated and sensitivity analysis was performed to optimize the system at different conditions. Optimal hybrid model has been selected on the basis of cost associated with the system and reliability using HOMER. The optimal cost of energy from the proposed hybrid system is (0.154 $/ kWh.). Comparison was also made with the cost per kilowatt hour from the National grid.
IJERT-Design of Hybrid Power Generating System for Educational Institute
International Journal of Engineering Research and Technology (IJERT), 2016
https://www.ijert.org/design-of-hybrid-power-generating-system-for-educational-institute https://www.ijert.org/research/design-of-hybrid-power-generating-system-for-educational-institute-IJERTV5IS020509.pdf Sufficient and reliable source of electricity is a major prerequisite for a sustained and successful economic development. Electricity is the major necessity for educational sector but the educational institutes are facing a major problem of energy crisis due to load shedding in national grid. So educational institutes have to depend on alternative sources of energy like diesel generator, solar energy, inverters, wind energy etc for power backup. The diesel generator is mostly used as the backup system. This paper presents the techno-economic viability of a hybrid system of solar photovoltaic and biogas generator with the unreliable grid; i.e. biogas-powered system and solar photovoltaic system along with the unreliable grid of Nepal, has been analyzed for energy demand through optimization and sensitivity analysis using energy modeling software HOMER. The model discussed in the paper compromises of solar PV, biogas and unreliable grid for Khwopa College of Engineering, Bhaktapur, Nepal which is used as a case study. The concept of hybridizing is that the base load is to be covered by largest and firmly available renewable energy source(s), and other intermittent source(s) should augment the base load to cover the peak load. The model has been designed to provide an optimal system configuration based on hour-by-hour data for energy availability and demands. The optimized hybrid system shows a unit cost of NRs.16.744/kWh which is obtained after the simulation considering contribution of individual renewable resources participating in the system.
Design of Hybrid Power Generating System for Educational Institute
Sufficient and reliable source of electricity is a major prerequisite for a sustained and successful economic development. Electricity is the major necessity for educational sector but the educational institutes are facing a major problem of energy crisis due to load shedding in national grid. So educational institutes have to depend on alternative sources of energy like diesel generator, solar energy, inverters, wind energy etc for power backup. The diesel generator is mostly used as the backup system. This paper presents the techno-economic viability of a hybrid system of solar photovoltaic and biogas generator with the unreliable grid; i.e. biogas-powered system and solar photovoltaic system along with the unreliable grid of Nepal, has been analyzed for energy demand through optimization and sensitivity analysis using energy modeling software HOMER. The model discussed in the paper compromises of solar PV, biogas and unreliable grid for Khwopa College of Engineering, Bhaktapur, Nepal which is used as a case study. The concept of hybridizing is that the base load is to be covered by largest and firmly available renewable energy source(s), and other intermittent source(s) should augment the base load to cover the peak load. The model has been designed to provide an optimal system configuration based on hour-by-hour data for energy availability and demands. The optimized hybrid system shows a unit cost of NRs.16.744/kWh which is obtained after the simulation considering contribution of individual renewable resources participating in the system.
Development of Renewable Energy based Hybrid System for Electricity Generation-A Case Study
Energy demand always lags energy supply in developing countries, which results in energy crisis. The conventional energy sources are finite and exhaustible. The solution to problem of energy crisis is utilization of renewable energy. Renewable energy sources are usually found in small scale, decentralized with regard to different geographical distribution, transition to renewable energy sources is viable option as the price of oil and gas continues to fluctuate. As an alternative to custom, onsite construction of centralized power plants, renewable systems based on PV arrays, windmills, Biofuel energy based systems or small hydropower, can be mass-produced " energy appliances " capable of being manufactured at low cost and tailored to meet specific energy loads and service conditions. , to make optimum utilization of renewable energy there exists a need to integrate the different renewable energy systems. The present work involves development of Renewable Energy based hybrid system for electricity generation that can supply desired power continuously throughout the year irrespective of fluctuation of energy available from standalone systems. The energy assessment has been done using Homer simulation tool for developing small solar-wind hybrid system, performance evaluation has been done.
Comparative Study on different Types of Grid Independent Hybrid Power System
International journal for research in applied science and engineering technology ijraset, 2020
The potentiality of delivering the load of an academic institution in a hilly state of India with solar photovoltaic (PV) arrays, diesel generator (DG), biomass generator (BG) and battery (BAT) as backup source by using the hybrid optimization model for electric renewables (HOMER) software. The HOMER software is used to analyze and find out the optimum configuration among a set of systems configurations. In this study, two hybrid systems (PV-DG-BAT system and PV-DG-BG-BAT system) are evaluated among themselves considering the levelized cost of energy (COE), renewable fraction (RF) and net present cost (NPC). The electrical energy demand is partially covered by diesel and biomass sources. The system must fulfill the annual average load of 854 kWh/day with 75 kW peak load. Keywords: Biomass generator (BG), hybrid optimization model for electric renewables (HOMER), levelized cost of energy (COE), renewable fraction (RF), net present cost (NPC). I. INTRODUCTION Electricity forms the nation's share of the ever increasing total energy consumption of the country. Since the middle of the last century, there has been a remarkable enlargement in the demand for energy globally. As a result, the innovative technology of renewable energy sources has become a theme of cardinal importance all over the world [1]. By global standards the present level of energy consumption in India as compared to other countries is very low. However, India is privileged to have plentiful assets of coal to power economic improvement. The high ash content of India's coal has come at a cost in terms of sensitive public risk and ecological problems. In several regions of India, huge fraction of population does not get the grid electricity and major part of rural areas still remain outside the reach of national or regional grid [2,3]. It is really impossible to meet by the conventional energy sources because of high capital investment on fuel and transport. The best way to meet their demand is by the non-conventional energy sources. Non-conventional sources are clean, unlimited and environmental friendly [4]. Hybrid energy systems are the systems where two or more renewable energy sources as wind, hydrogen, solar, etc. have been utilized simultaneously to satisfy the demand. Many renewable sources like solar energy, wind energy, hydro potential, plant and animal waste, tidal energy, and the heat of the earth's core as the resources from which energy is produced, are clean and abundantly available in nature, and are being widely used in cost effective manner [5]. Standalone systems produce power independently of the utility grid. These systems are proper for isolated locality where the grid cannot be accessible and there is no additional source of energy. Standalone systems are mostly consisting of the PV and the wind energy [6]. Photovoltaic (PV), diesel generator (DG), biomass generator (BG) and battery (BAT) are considered as main power sources of the study, where PV and BG as renewable energy source and DG as conventional energy source. Since PV source is not available during 24 hours and it is also depend on climatic conditions, so in addition BAT has been taken as a backup. In order to determine the optimal renewable energy hybrid system design which can cover the load of the studied location HOMER (Hybrid Optimization Model for Electric Renewables) is used. HOMER ranked the system according to the Net Present Cost (NPC) and an optimum system has to be chosen for that location.
Optimal Sizing and Cost Assesment of Hybrid Renewable Energy Systems for Assam Engineering College
— Fast depleting reserves of fossil fuels, increasing cost of fuel for conventional power generation in recent times, along with a regulatory framework to minimize the carbon footprint worldwide, the use of Renewable sources of power generation has become an inevitable reality. The paper makes a feasibility assessment of Renewable Energy System (RES) as a possible source for electrification for an education institution namely Assam Engineering College, located at Guwahati, Assam, India (26.13 °N, 91.66 °E). A combination of one or more renewable sources like photovoltaic (PV) and wind either in standalone or grid connected mode with energy storage capacity based energy systems are investigated in this paper. The objective of the study is to optimize the size and cost of renewable energy system at the selected site to meet the electrical demand of a load of 24kWh/day having a peak load of 6.5 kW. The modeling, optimization and analysis of the hybrid system is carried out using HOMER software produced by National Renewable Energy Laboratory (NREL), Colorado USA. The hybrid systems are evaluated on the basis of Net Present Cost (NPC), Levelised Cost of Energy (COE), Initial Cost, Operating Cost, and Renewable Fraction obtained on the basis of computation results. The results are favorable for the use of renewable energy based sources at the selected site with PV-Wind-Grid connected system emerging as the most economic RES with COE equal to 0.209 $/kWh.
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%.
— This paper aims to design an optimal combination of hybrid (solar, wind and diesel generator) system for rural electriciation. Renewable energies (solar and wind) are intermittent and fluctuate sources. So, diesel generator and battery bank are intergrated in this system to get cotinuous power supply. In this study, Hybrid Optimization Model for Electric Renewable (HOMER) software is used for the analysis of sizing and sensitivity, performed in order to obtain the most feasiable configuration of proposed hybrid renewable energy system. The study found a feasiable (pv-wind–diesel hybrid system) system with 64% combinition of renewable energy (48% PV and 16% wind) fraction. The system was able to meet the load requirements of the village (AC primary load 41969 kWh/year) with the annual combination of wind, solar PV and diesel (10350, 31541 and 23521 kWh) respectively. The proposed system is mainly considered to reduce the diesel consumption and to obtain the continuous power supply for the villiage.
Techno-Economic Evaluation of Renewable Energy Based Small Hybrid Model
2014
The living standard and prosperity of a nation vary directly with increase in use of power. As technology is advancing, the consumption of power is steadily rising. Sufficient and reliable source of electricity is a major prerequisite for a sustained and successful economic development and poverty reduction. In Bangladesh, the crisis of power is a major problem. Gradually the fissure between demand and production is escalating. Moreover, most of the power plants are gas based which will be phased out in near future. Misuse, system loss and corruption in power sector are the main issue regarding this crisis. Therefore, electricity shortage is an acute crisis in Bangladesh. Most of the rural area is not connected with the national grid. So, agricultural and industrial production is greatly hampering in rural areas. Electrification in rural and isolated area is the crying need of Bangladesh. It is very essential to provide electricity for them. The challenge of energy accessibility needs to be understood in terms of availability as well as affordability for individuals and communities. Bangladesh has good prospects of renewable power generation. Proper utilization of renewable energy is the up most choice for solving the power crisis in Bangladesh because it requires low cost and less risk. There are at most thirty small and isolated islands in Bangladesh. Char Nizam (Latitude: N 22.68, Longitude: E 90.65) is one of the island with 1800 inhabitants in Bhola district of Barisal division in Bangladesh. In this research he have tried to design a feasible system for that area and considered a hybrid system that contains diesel-PV-biogas system. Hybrid Optimization Model for Electric Renewable (HOMER) software is used to find out the final optimization and sensitive analysis of hybrid system. This system satisfies the load demand and reduces CO2 emission which will help to generate green energy.
Optimization of Renewable Energy Hybrid System for Grid Connected Application
2012
ABSTRACT. Hybrid energy systems are pollution free, takes low cost and less gestation period, user and social friendly. Such systems are important sources of energy for shops, schools, and clinics in village communities especially in remote areas. Hybrid systems can provide electricity at a comparatively economic price in many remote areas. This paper presents a method to jointly determine the sizing and operation control of hybrid energy systems. The model, PV wind hydro and biomass hybrid system connects to grid. The system configuration of the hybrid is derived based on a theoretical domestic load at a typical location and local solar radiation, wind and water flow rate data and biomass availability. The hybrid energy system is proposed for 10 of teacher’s houses of Industrial Training Institute, Mersing. It is predicted 10 kW load consumption per house. The hybrid energy system consists of wind, solar, biomass, hydro, and grid power. Approximately energy consumption is 860 kWh/d...