摘要：In this paper, a novel optimal reactive power flow solution approach in multi-terminal HVDC (High Voltage Direct Current) systems is studied. ULTCs’ (under load tap changer transformers) full equivalent model for the DC converters’ are taken into account in the proposed AC-DC power unlike the similar studies in the literature. Thus, the proposed study provides real accurate results for practical AC-DC applications. Optimal reactive power flow for minimum active power loss is provided by Genetic Algorithm (GA). For the test of the proposed study, the IEEE 14-bus test system modified to AC-DC system is used in the study. The obtained test results prove that the proposed GA based optimization method is effective to reach the global optimum point of minimum active power loss without dropping to local minimum point through satisfying system constraints.
关键词：active power loss minimization;HVDC;multi-terminal;ULTC;genetic algorithm
