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Karthick, M.
- A Hybrid Technique Using PSO and GA to Solve Economic Dispatch Problem with Valve-Point Effect
Abstract Views :183 |
PDF Views:3
Authors
A. Parassuram
1,
M. Karthick
1
Affiliations
1 Dept. of EEE, Anna University, Coimbatore, IN
1 Dept. of EEE, Anna University, Coimbatore, IN
Source
Artificial Intelligent Systems and Machine Learning, Vol 3, No 1 (2011), Pagination: 74-78Abstract
Scarcity of energy resources, increasing power generation cost and ever-growing demand for electric energy necessitates optimal economic dispatch in today’s power systems. The main objective of economic dispatch is to reduce the total power generation cost, while satisfying various equality and inequality constraints. Traditionally in economic dispatch problems, the cost function for generating units has been approximated as a quadratic function which doesn’t provide accurate results. Moreover, to obtain accurate fuel cost, valve-point effect in thermal power plant has to be taken into account. The inclusion of valve-point effect makes the modeling of the fuel cost functions of generating units more practical. In this paper a new hybrid evolutionary algorithm called Hybrid PSO, has been employed to solve economic dispatch problem with the valve-point effect. The hybrid technique combines Genetic Algorithms (GA) and Particle Swarm Optimization (PSO). The proposed algorithm is modeled on the concepts of Darwin’s theory based on natural selection and evolution, and on cultural and social rules derived from the swarm intelligence. Using Hybrid PSO technique the non-linear cost function is solved for three unit system and the results are compared with the traditional PSO, DE (Differential Evolution) and GA method. These results prove that Hybrid PSO method is capable of getting higher quality solution including mathematical simplicity, fast convergence, and robustness to solve hard optimization problems.Keywords
Economic Dispatch, Genetic Algorithm, Particle Swarm Optimization, Differential Evolution, Valve Point Effect, Hybrid PSO.
- Traditionally Used Ethno-Medicinal Plants of the Kurumba Communities Surrounded in Thalamalai Hills, Namakkal District, Tamil Nadu
Abstract Views :681 |
PDF Views:10
Authors
Affiliations
1 College of Forestry, Kerala Agricultural University, Thrissur – 680656, IN
2 Kaps Green Foundation, Valavanthi Nadu, Kolli Hills, Namakkal – 621211, IN
3 Forest College and Research Institute, TNAU, Mettupalayam-641301, IN
1 College of Forestry, Kerala Agricultural University, Thrissur – 680656, IN
2 Kaps Green Foundation, Valavanthi Nadu, Kolli Hills, Namakkal – 621211, IN
3 Forest College and Research Institute, TNAU, Mettupalayam-641301, IN
Source
South Indian Journal of Biological Sciences, Vol 3, No 1 (2017), Pagination: 15-26Abstract
The present study aimed to enumerate the ethno-medicinal uses of plants used by the Kurumba communities living around the Thalamalai Hills in Namakkal district. Medicinal uses of 89 plants belongs to 80 genera and 45 families were identifiedand recorded from the tribals with their botanical identities and method of drug preparations. All the information's related to the uses of the traditional medicinal plants were highlighted in this paper.Keywords
Kurumba, Thalamalai, Ethno-Medicine, Eastern Ghats, Plant Diversity.Full Text
References
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- Investigation of Aerodynamic Performances of NACA 0015 Wind Turbine Airfoil
Abstract Views :125 |
PDF Views:0
Authors
Affiliations
1 Department of Aeronautical Engineering, Kumaraguru College of Technology, Coimbatore-49, Tamil Nadu, IN
1 Department of Aeronautical Engineering, Kumaraguru College of Technology, Coimbatore-49, Tamil Nadu, IN
Source
International Journal of Engineering Research, Vol 5, No 4 (2016), Pagination: 327-331Abstract
Continuous rise of energy demand and need for cleaner environment emphasizes efficient conversion of energy from renewable sources. Wind energy is the most viable sources of renewable energy and it is environmentally friendly alternative energy sources. Energy extraction from wind energy is rapidly competitive to power production from other sources like coal. In this paper, Computational Fluid Dynamics (CFD) is used to predict the aerodynamic efficiency of wind turbine blades. A blade's aerodynamic efficiency is expressed in terms of its lift-to-drag ratio. The design and analysis of blades is one of the critical areas of wind turbine design. In this paper, a review of aerodynamics of the two dimensional NACA 0015 airfoil for vertical axis wind turbine (VAWT) is attempted. The main focus of this investigation is to analyze the flow behavior around the airfoil body and to calculate the performance coefficients at velocity 10.5 m/s and angle of attack from 0° to 20°. Comparisons of the CFD results with numerical predictions from the XFOIL result and NACA report showed a good agreement.Keywords
Aerodynamics, CFD, NACA 0015, VAWT, Wind Turbine.Full Text