SUBODH PAUDEL OPTIMIZATION OF HYBRID PV/WIND POWER SYSTEM FOR REMOTE TELECOM STATION (original) (raw)
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5th International Conference on Power and Energy Systems, 2013
Telecommunication Networks have changed the way people live, work and play. Due to the massive demand of broadband services, the power solutions is an urgent requirement which are provided to these stations and networks through the use of grid electricity, conventional energy and alternative energy sources. In the urban areas, telecommunication network can be powered through the use of grid electricity, however, in rural areas grid electricity is not available or is available in few stations only and the use of conventional energy is costly as well. This paper gives an overview of existing power network of Base Transreceiver Station (BTS) of Nepal Telecom (NT) and present technical and economic assessment for proper selection of technologies on Diesel Generator (DG), hybrid DG/Battery and hybrid Photovoltaic PV/DG/Battery as a backup power supply in the urban areas, and hybrid PV/Wind with Battery backup, PV with Battery backup and PV with FuelCell/Electrolyzer/Battery backup in the rural areas.
2015
Nepal has approximately 5,222 telecom towers which form the backbone of its telecom market. These towers require millions of kWh of electrical energy and contribute up to 60% of the total network operating cost in rural areas. This expenditure on energy as a result of the lack of grid availability highlights a potential barrier to telecom industry growth. Uncertainty in power availability has compelled infrastructure providers to use diesel generators to ensure a continuous supply of power for network availability. Annually, 7,120 liters of diesel are consumed to operate a telecom tower optimally producing 19.52 million tons of CO2eq per telecom tower. Hybrid energy systems such as solar and wind energy sometimes in combination with diesel generator can be applied successfully in those areas where grid connection is not available or considered uneconomical. To address this problem, this study report presents a techno-economic evaluation of solar-wind hybrid systems to power a remote...
Optimization of hybrid PV/wind power system for remote telecom station
IEEE Conference on Power and Energy Systems (ICPS), 2011
The rapid depletion of fossil fuel resources and environmental concerns has given awareness on generation of renewable energy resources. Among the various renewable resources, hybrid solar and wind energy seems to be promising solutions to provide reliable power supply with improved system efficiency and reduced storage requirements for stand-alone applications. This paper presents a feasibility assessment and optimum size of photovoltaic (PV) array, wind turbine and battery bank for a standalone hybrid Solar/Wind Power system (HSWPS) at remote telecom station of Nepal at Latitude (27°23'50") and Longitude (86°44'23") consisting a telecommunication load of Very Small Aperture Terminal (VSAT), Repeater station and Code Division Multiple Access Base Transceiver Station (CDMA 2C10 BTS). In any RES based system, the feasibility assessment is considered as the first step analysis. In this work, feasibility analysis is carried through hybrid optimization model for electric renewables (HOMER) and mathematical models were implemented in the MATLAB environment to perform the optimal configuration for a given load and a desired loss of power supply probability (LPSP) from a set of systems components with the lowest value of cost function defined in terms of reliability and levelized unit electricity cost (LUCE). The simulation results for the existing and the proposed models are compared. The simulation results shows that existing architecture consisting of 6.12 kW KC85T photovoltaic modules, 1kW H3.1 wind turbine and 1600 Ah GFM-800 battery bank have a 36.6% of unmet load during a year. On the other hand, the proposed system includes 1kW *2 H3.1 Wind turbine, 8.05 kW TSM-175DA01 photovoltaic modules and 1125 Ah T-105 battery bank with system reliability of 99.99% with a significant cost reduction as well as reliable energy production.
Stand alone Wind/PV/Diesel Hybrid system for telephone transceiver Station in TamilNadu Rural areas
A b s t r a c t-This paper to focus to propose the opportunity of by means of standalone wind/PV/diesel hybrid systems while most important sources of power to telephone transceiver Stations in the rustic regions of Tamilnadu, India. Three dissimilar sites are considered without proving the power from grid: Ervadi, Mullivadi, Thirupullani, were selected as case study. Four dissimilar feasible options simultaneously with a hybrid PV/wind, standalone diesel generator, standalone PV and standalone wind energy system were calculated to gap and estimate their practical arrangement, economics and environmental blow. The optimization tool is using to determine the Initial Capital, the Total Net Present Cost, as well as the Cost of the different supply options. The assortment criteria include the economic viability, fuel prices and emission for a project life years.
In order to expand cellular coverage and grow their market presence, mobile network operators in Kenya have had to deploy a significant part of their radio base station infrastructure in rural and remote areas, most of which are off-grid areas i.e., areas that are beyond the reach of the national electricity grid. The most common way to solve the power problem at these off-grid radio base stations has been to install and run diesel generator sets. Diesel generators have some inherent problems associated with them, which include; high cost of fuel, fuel delivery challenges, fuel pilferage, fuel supply disruptions, fuel price uncertainties, high generator maintenance costs, environmental pollution and system unreliability. Solar and wind are alternative sources of energy that can be used in standalone mode or in hybrid configuration to reduce reliance on diesel generators. The financial analysis and design of renewable energy systems can be challenging, due to the large number of design options and uncertainty in key parameters. Further complexity is added because their power output may be intermittent, seasonal, and non-dispatchable, and the availability may be uncertain. This case study was undertaken to determine the most feasible hybrid power solution for one off grid radio base station site belonging to a mobile network operator in Kenya through use of HOMER Microgrid analysis software tool. The load profile was measured using a digital power data logger and the maximum load estimated. Wind and Solar data was obtained from the National Aeronautical and Space Agency and National Renewable Energy Laboratory data bases respectively. Component costs, operational costs, diesel fuel prices and estimate interest rates were also obtained from both secondary and primary sources. Using this data, several hybrid system configurations were simulated and ranked according to the value of their Net Present Cost. The system with the lowest Net Present Cost is deemed as the most feasible configuration. Results from the study showed that the Solar-Diesel Generator-Battery Bank configuration has the lowest Net Present Cost and would be the most feasible power solution for the study site.
The Scientific Bulletin of Electrical Engineering Faculty
Mobile telecommunication sites are an essential station in our technological life, used to allow the communication through mobiles and internet. Many telecommunication sites are installed in remote areas where the grid is not available. For this, hybrid renewable energy systems (HRES) are used to power the stations and integrate the remote areas with the world. This article aims to evaluate the performance of the existing HRES of the remote mobile telecommunication station of Bougaroun, Collo, Algeria -which consists of PV modules, batteries and diesel generator (DG)- and to develop it using a mathematical model to demonstrate the effect of deploying a wind turbine to supply more green energy, minimize the operation cost (fuel consumption and maintenance), and reduce the greenhouses emitted by the DG. Based on the wind data at the site location, the obtained results show a significant amount of output power that can be used to minimize the DG functionality.