Archives of Electrical Engineering (Sep 2019)

A hybrid method for the optimal reactive power dispatch and the control of voltagesin an electrical energy network

  • Aissa Benchabira,
  • Mounir Khiat

DOI
https://doi.org/10.24425/aee.2019.129340
Journal volume & issue
Vol. vol. 68, no. No 3
pp. 535 – 551

Abstract

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This paper presents the resolution of the optimal reactive power dispatch (ORPD) problem and the control of voltages in an electrical energy system by using a hybrid algorithm based on the particle swarmoptimization (PSO) method and interior point method (IPM). The IPM is based on the logarithmic barrier (LB-IPM) technique while respecting the non-linear equality and inequality constraints. The particle swarmoptimization-logarithmic barrier-interior point method (PSO-LB-IPM) is used to adjust the control variables, namely the reactive powers, the generator voltages and the load controllers of the transformers, in order to ensure convergence towards a better solution with the probability of reaching the global optimum. The proposed method was first tested and validated on a two-variable mathematical function using MATLAB as a calculation and execution tool, and then it is applied to the ORPD problem to minimize the total active losses in an electrical energy network. To validate the method a testwas carried out on the IEEE electrical energy network of 57 buses.

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