Application of hybrid gwobsa technique for solving single and multi objective optimal power flow problems using upfc

Abstract

newline The power system operators strive to supply reliable and quality power newlinesupply to the consumers. They also aim for operating the system in a most newlineeconomical way. Scheduling the generation of generators to decrease the cost of newlinegeneration and to meet all the demands and satisfy the system constraints are the newlineprime requirements. Researchers developed the optimal power flow which is an newlineimportant consideration of power system operation and planning. The motive of newlinean OPF is to set up the power system control parameters which optimize a newlineparticular objective function and also satisfy the power flow equations, and the newlineassociated constraints, which are power system security constraints and operating newlinelimits of devices. In this context, the Optimal Power Flow (OPF) is modeled as an newlineoptimization problem by having the objectives such as minimization of generation newlinecost, minimization of real power loss, minimization of bus voltage deviation and newlinemaximization of voltage stability. The OPF problem is subjected to the constraints newlinesuch as real and reactive power balance, limits on voltage at all buses, real and newlinereactive power generation of generators, transformer tap position, shunt newlinecompensation and line loading. A power system encompasses three sectors such newlineas the generation the transmission and the distribution sector. Nowadays, the newlinetransmission sector is getting more and more strained, and as a result of increasing newlinedemand and constraints on the construction of new lines. Conversely, several high newlinevoltage transmission systems are functioning below their thermal limits owing to newlineconstraints related to voltage and stability limits. Furthermore, conventional newlinetransmission amenities are not intended to tackle the control necessities of newlinemultifaceted, large-scale power systems.