Estimation of Smooth and Non-smooth Fuel Cost Function Parameters Using Improved Symbiotic Organisms Search Algorithm

• Published in: Journal of electrical engineering & technology Vol. 15; no. 1; pp. 13 - 25
• Main Authors: Sönmez, Yusuf, Unal, Mesut
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 2020; 대한전기학회
• Subjects: Electrical Engineering; Electrical Machines and Networks; Electronics and Microelectronics; Engineering; Instrumentation; Original Article; Power Electronics; 전기공학; Improved symbiotic organisms search; Fuel cost curve; Parameter estimation
• ISSN: 1975-0102; 2093-7423
• DOI: 10.1007/s42835-019-00291-x

The improved symbiotic organisms search (R-SOS) Algorithm is proposed to estimate parameters of smooth and non-smooth fuel cost functions for improving the solution accuracy of economic dispatch problems. Determining accurately of fuel cost curve is a crucial task, because they effect directly solution accuracy of economic dispatch and optimal power flow problems. There are two models as smooth and non-smooth forms to describe the input–output characteristics of generators in thermal power plants. This paper presents an implementation of the R-SOS algorithm in order to estimate parameters of these functions. First, second and third order smooth fuel cost functions and non-smooth fuel cost function with valve point effects are used in the study. The estimation problem is described as an optimization one. The R-SOS algorithm is proposed for solving this optimization problem and it minimizes the total error of estimated parameters. The performance of the R-SOS algorithm is tested on four different cases having different fuel types. Results obtained are compared to classical Symbiotic Organisms Search and other meta-heuristic methods and they show that the proposed R-SOS algorithm is favourite model in all test cases for estimating accurately of fuel cost function parameters.