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Estimating Hourly Profiles of Insolation based on Weekly Weather Forecast
Takahide Niimura,
Noriaki Sakamoto,
Kazuhiro Ozawa
Issue:
Volume 3, Issue 6-2, December 2014
Pages:
1-6
Received:
25 August 2014
Accepted:
12 September 2014
Published:
27 October 2014
DOI:
10.11648/j.ijepe.s.2014030602.11
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Abstract: In this paper, the authors present a simple procedure of estimating weekly profiles of insolation for photovoltaic (PV) power generation output of a roof-top PV system. The model is based on the historical data of solar insolation and weather conditions. Weather conditions are classified into representative patterns such as sunny, cloudy, and rainy, and corresponding hourly profile of insolation is obtained as the most likely values under each weather condition. The system uses the text weather forecast and the probability of precipitation information as input to obtain the estimated weekly profile of insolation. From the results presented here it is shown that such a simple profile can be useful for rating the storage batteries and scheduling electric vehicle charging to better utilize the PV-generated electricity.
Abstract: In this paper, the authors present a simple procedure of estimating weekly profiles of insolation for photovoltaic (PV) power generation output of a roof-top PV system. The model is based on the historical data of solar insolation and weather conditions. Weather conditions are classified into representative patterns such as sunny, cloudy, and rainy...
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Nobel Approach of Power Feeding for Cellular Mobile Telephony Base Station Site: Hybrid Energy System
Issue:
Volume 3, Issue 6-2, December 2014
Pages:
7-14
Received:
31 October 2014
Accepted:
4 November 2014
Published:
6 November 2014
DOI:
10.11648/j.ijepe.s.2014030602.12
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Abstract: The problem of providing energy to remotely located systems is a serious concern for the telecom industry, specially powering the mobile telephony towers in rural areas, which lacks quality grid power supply. The feasible solution looks to be in the form of omnipresent and technically viable alternative renewable energy based stand alone hybrid system. In order to meet sustained load demands during varying natural conditions, different energy sources and converters need to be integrated with each other. This paper presents and explores the possibility of putting hybrid energy system for powering cellular mobile base station sites. Looking at Indian weather conditions, the most feasible configuration is the stand alone PV/Wind Hybrid Energy System with diesel generator as a backup for cellular mobile telephony base station site. This system will be more cost effective and environmental friendly over the conventional diesel generator based systems in near future.
Abstract: The problem of providing energy to remotely located systems is a serious concern for the telecom industry, specially powering the mobile telephony towers in rural areas, which lacks quality grid power supply. The feasible solution looks to be in the form of omnipresent and technically viable alternative renewable energy based stand alone hybrid sys...
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Application of Artificial Intelligence Technique to Economic Load Dispatch of Thermal Power Generation Unit
Pragya Nema,
Shraddha Gajbhiye
Issue:
Volume 3, Issue 6-2, December 2014
Pages:
15-20
Received:
5 November 2014
Accepted:
10 November 2014
Published:
12 November 2014
DOI:
10.11648/j.ijepe.s.2014030602.13
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Abstract: Economic Dispatch(ED) is one of the main problem of power system operation and control which determines the optimal real power settings of generating units with an objective of minimizing the total fuel cost, subjected to limits on generator real power output & transmission losses. In all practical cases, the fuel cost of generator can be represented as a quadratic function of real power generation. This paper describe and Introduce a new nature Inspired Artificial Intelligence method called Firefly Algorithm(FA). The Firefly Algorithm is a stochastic Meta heuristic approach based on the idealized behavior of the flashing characteristics of fireflies. The aim is to minimize the generating unit’s combined fuel cost having quadratic cost characteristics subjected to limits on generator real power output & transmission losses. This paper presents an application of the FA to ED with valve point loading for different Test Case system. The obtained solution quality and computation efficiency is compared to another artificial intelligence technique, called Genetic algorithm (GA) . The simulation results show that the proposed algorithm outperforms previous artificial intelligence method.
Abstract: Economic Dispatch(ED) is one of the main problem of power system operation and control which determines the optimal real power settings of generating units with an objective of minimizing the total fuel cost, subjected to limits on generator real power output & transmission losses. In all practical cases, the fuel cost of generator can be represent...
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Comparative Analysis between IG and DFIG for Wind Energy Conversion Systems using STATCOM
Vishvaneeta Patel,
Ashutosh Kashiv,
Kulsum Aslam,
H. K. Verma
Issue:
Volume 3, Issue 6-2, December 2014
Pages:
21-26
Received:
5 November 2014
Accepted:
24 November 2014
Published:
29 November 2014
DOI:
10.11648/j.ijepe.s.2014030602.14
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Abstract: In the grid new renewable resources are added to extract more power. This increases power quality issues to grid connection. Power quality problem occur mainly due to Unbalance voltage, current or frequency that results in a failure or a Mis-operation of end user equipment. Injection of the wind power into an electric grid affects the power quality. The impact of the wind turbine in the grid system concerning the power quality measurements are the active power, reactive power, variation of voltage, and switching operation and these are measured according to national/international guidelines. This paper investigates the implementation and comparison of DFIG based wind farm connected to a grid and load and IG based wind farm connected to a grid and load. The steady state behaviour of an interconnected IG based wind farm with STATCOM and DFIG based wind farm with STATCOM is studied and compared for performance evaluation of the two Generators. The power system model is simulated in MATLAB / SIMULINK. Superiority of DFIG over IG have been analysed in this paper.
Abstract: In the grid new renewable resources are added to extract more power. This increases power quality issues to grid connection. Power quality problem occur mainly due to Unbalance voltage, current or frequency that results in a failure or a Mis-operation of end user equipment. Injection of the wind power into an electric grid affects the power quality...
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3-Level H-Bridge Space Vector PWM Inverter for Induction Motor
Darshni Shukla,
Brijal Panchal,
Pragya Nema
Issue:
Volume 3, Issue 6-2, December 2014
Pages:
27-37
Received:
9 October 2014
Accepted:
22 November 2014
Published:
27 December 2014
DOI:
10.11648/j.ijepe.s.2014030602.15
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Abstract: Multilevel voltage-fed inverters with space vector pulse width modulation strategy are gained importance in high power high performance industrial drive application & better dc bus utilization. In the propose scheme 3-level space vector PWM H-bridge inverter has a large number of switching states as conventional 2-level VSI. A step by step & detail study is described here so it can be implemented to multi level inverter also. MATLAB/SIMULINK implementation & experimental results of SVPWM inverter & its FFT analysis are presented to realize the validity of the inverter operation in linear region.
Abstract: Multilevel voltage-fed inverters with space vector pulse width modulation strategy are gained importance in high power high performance industrial drive application & better dc bus utilization. In the propose scheme 3-level space vector PWM H-bridge inverter has a large number of switching states as conventional 2-level VSI. A step by step & detail...
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