@ARTICLE{Benchabira_Aissa_A_2019, author={Benchabira, Aissa and Khiat, Mounir}, volume={vol. 68}, number={No 3}, journal={Archives of Electrical Engineering}, pages={535-551}, howpublished={online}, year={2019}, publisher={Polish Academy of Sciences}, abstract={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.}, type={Article}, title={A hybrid method for the optimal reactive power dispatch and the control of voltagesin an electrical energy network}, URL={http://www.czasopisma.pan.pl/Content/112884/PDF/06_AEE-2019-3_INTERNET.pdf}, doi={10.24425/aee.2019.129340}, keywords={electrical energy network, interior point method (IPM), optimal reactive power dispatch (ORPD), particle swarm optimization (PSO)}, }