Optimal Allocation of Static Var Compensators in Electric Power Systems

Abstract

In the current age, power systems contain many modern elements, one example being Flexible AC Transmission System (FACTS) devices, which play an important role in enhancing the static and dynamic performance of the systems. However, due to the high costs of FACTS devices, the location, type, and value of the reactive power of these devices must be optimized to maximize their resulting benefits. In this paper, the problem of optimal power flow for the minimization of power losses is considered for a power system with or without a FACTS controller, such as a Static Var Compensator (SVC) device The impact of location and SVC reactive power values on power system losses are considered in power systems with and without the presence of wind power. Furthermore, constant and variable load are considered. The mentioned investigation is realized on both IEEE 9 and IEEE 30 test bus systems. Optimal SVC allocation are performed in program GAMS using CONOPT solver. For constant load data, the obtained results of an optimal SVC allocation and the minimal value of power losses are compared with known solutions from the literature. It is shown that the CONOPT solver is useful for finding the optimal location of SVC devices in a power system with or without the presence of wind energy. The comparison of results obtained using CONOPT solver and four metaheuristic method for minimization of power system losses are also investigated and presented.

Techniques of power system static security assessment and improvement: A literature survey

“…There are four main categories of FACTS devices: series, shunt, series-shunt, and series-series [ 126 , 127 ]. Thyristor-controlled series capacitor (TCSC), thyristor-controlled series reactor (TCSR), and static synchronous series compensator (SSSC) are examples of series FACTS devices that can be linked in series with a transmission line to adjust the series reactance of the line by introducing voltage in series with it.…”

Cuckoo search algorithm to solve the problem of economic emission dispatch with the incorporation of facts devices under the valve-point loading effect

“…The SVC device, is composed of a capacitor, which is the VAR generator, and a TCR (Thyristor Controlled Reactor), which behaves as a variable VAR absorbing load (depending on the firing angle of the Thyristor valve) [41]. Thus, the SVC can inject or absorb a variable amount of reactive power to the power system, adapting the compensation to the load conditions at each instant (see Fig.…”

Analysis of the voltage profile and power losses in distribution network with renewable energy sources using CONOPT solver

“…Prosječno vrijeme izvršavanja proračuna optimalnih tokova snaga primjenom GAMS/CONOPT solvera je 0.21 sec, što je neporedivo brže u odnosu na vrijeme izvršavanja proračuna primjenom metaheurističkih i hibridnih algoritama, a što je diskutovano u [17][18].…”