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.

JO - Archives of Electrical Engineering L1 - http://sd.czasopisma.pan.pl/Content/112884/PDF/06_AEE-2019-3_INTERNET.pdf L2 - http://sd.czasopisma.pan.pl/Content/112884 IS - No 3 EP - 551 KW - electrical energy network KW - interior point method (IPM) KW - optimal reactive power dispatch (ORPD) KW - particle swarm optimization (PSO) ER - A1 - Benchabira, Aissa A1 - Khiat, Mounir PB - Polish Academy of Sciences VL - vol. 68 JF - Archives of Electrical Engineering SP - 535 T1 - A hybrid method for the optimal reactive power dispatch and the control of voltagesin an electrical energy network UR - http://sd.czasopisma.pan.pl/dlibra/docmetadata?id=112884 DOI - 10.24425/aee.2019.129340