Abstract
Reactive power compensation is one of the practical tools that can be used to improve power systems and reduce costs. These benefits are achieved when the compensators are installed in a suitable place with optimal capacity. This study solves the issues of optimal supply and the purchase of reactive power in the IEEE 30-bus power system, especially when considering voltage stability and reducing total generation and operational costs, including generation costs, reserves, and the installation of reactive power control devices. The modified version of the artificial bee colony (MABC) algorithm is proposed to solve optimization problems and its results are compared with the artificial bee colony (ABC) algorithm, the particle swarm optimization (PSO) algorithm and the genetic algorithm (GA). The simulation results showed that the minimum losses in the power system requires further costs for reactive power compensation. Also, optimization results proved that the proposed MABC algorithm has a lower active power loss, reactive power costs, a better voltage profile and greater stability than the other three algorithms.
Highlights
Reactive power compensation located near the place of consumption is one of the most effective ways to modify power system performances [1,2,3]
The use of reactive power compensators such as capacitor banks, flexible AC transmission system (FACTS) devices, as well as on-load tap changers (OLTC) adjustments are common methods used to control the reactive current flowing in the power system
The decision-making variables in the above equations include the generator bus voltage, tap changers, reactive power generated by the capacitors, optimal location and capacity of the Static Var Compensator (SVC) and thyristor-controlled series compensator (TCSC)
Summary
Reactive power compensation located near the place of consumption is one of the most effective ways to modify power system performances [1,2,3]. The use of reactive power compensators such as capacitor banks, flexible AC transmission system (FACTS) devices, as well as on-load tap changers (OLTC) adjustments are common methods used to control the reactive current flowing in the power system. Reactive power compensations generate required reactive power near the load instead of being supplied from a distant power plant [4]. The power factor is corrected, loss is reduced and line capacity is increased. These benefits can only be achieved when reactive power compensators are optimally sized and properly controlled. Voltage stability and optimal reactive power flow are integrated
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