Informatics Publishing Limited

C. Kumar ¹, T. Alwarsamy ²

Affiliations
1 Department of Electrical and Electronics Engineering, S.K.P Engineering College, Tiruvannamalai, Tamil Nadu, IN
2 Directorate of Technical Education, Chennai, IN

Abstract

In this paper, a more realistic formulation of the Economic Dispatch problem is proposed, which considers practical constraints and non linear characteristics. The proposed ED formulation includes ramp rate limits, valve loading effects, equality and inequality constraints, which usually are found simultaneously in realistic power systems. This paper presents a novel Genetic Algorithm to solve the economic load dispatch (ELD) problem of thermal generators of a power system. This method provides an almost global optimal solution and compared with Genetic algorithm, Particle Swarm Optimization and Lambda iteration method since they don’t get stuck at local optimum. The proposed method and its variants are validated for the two test systems consisting of 3 and 10 thermal units whose incremental fuel cost functions takes into account the valve-point loading effects.

Keywords

Economic Load Dispatch, Genetic Algorithm, Valve-Point Loading, Ramp Rate Limits, Roulette Selection.

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T. Alwarsamy ¹, V. Selladurai ², P. Thangavel ², M. Murugan ³, A. Gopal Das ³

Affiliations
1 GCT, CBE, IN
2 CIT, CBE, IN
3 GCT Campus, Coimbatore-641013, IN

Abstract

In the turning operation, chatter or vibration is a frequent problem, which affects the surface finish and tool life. In all cutting operations like turning, boring and milling vibrations are induced due to the deformation of the workpiece, this implies economical disadvantage. The main objective of the proposed work is to design damped tool holder for existing machine tools with low cost fabrication techniques. In this investigation, improvement of the damping capability of boring tool and suppression of chatter vibration using lead damper and Impact damper are analyzed. The lead damper Inertia mass of the boring tool has been Increased to suppress the chatter vibration. In impact damper kinetic energy of free mass is dissipated. Finite element analysis is performed to study dynamic behavior of composite tool holder, the effects of overhang length of boring tool with lead damper, and the effects of impact damper in boring tool was investigated.

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