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Energy Systems

, Volume 9, Issue 2, pp 415–438 | Cite as

Economic load dispatch problem: quasi-oppositional self-learning TLBO algorithm

  • Tapan Prakash
  • V. P. Singh
  • Sugandh P. Singh
  • S. R. Mohanty
Original Paper

Abstract

This paper proposes a meta-heuristic algorithm named as quasi-oppositional self-learning teacher-learner-based-optimization (QOSLTLBO) for solving non-convex economic load dispatch (ELD) problem. The ELD problem is an essential concern of power system and its main objective is to allocate optimal power generation to each generating unit so as to minimize the total cost of generation while satisfying all constraints available in the system. The problem considered in this paper is a non-convex quadratic generation cost of the units (with or without valve-point loading effects) with power balance and generation limits as the system constraints. This model of generation cost is a continuous model of the ELD problem. The proposed algorithm includes a quasi-oppositional approach for better initialization of population. A self-learning phase is added after teacher phase and learner phase of basic teacher-learner-based-optimization (TLBO) algorithm to improve the convergence rate. To prove the efficacy and robustness of proposed algorithm, it is applied to solve ELD problem on different standard IEEE generator systems and the results, thus obtained are compared with other state-of-art algorithms. The minimum total cost of generation in all the cases are obtained from the proposed algorithm which proves its effectiveness over others. The additional advantage of the proposed QOSLTLBO algorithm is that it is kept free from algorithm-specific parameters like basic TLBO.

Keywords

Constraint handling Economic load dispatch Quasi-opposition Self-learning Valve-point effects 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Department of Electrical EngineeringNational Institute of TechnologyRaipurIndia
  2. 2.Department of Electrical EngineeringMotilal Nehru National Institute of TechnologyAllahabadIndia

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