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The IUP Journal of Electrical and Electronics Engineering:
Enhancing Power System Security: A Multi-Objective Optimal Approach to Identify the Location and Size of SVC.
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With the growing power demand, the need for innovative and novel methods to operate large interconnected power systems has increased. This reflects more complexity and therefore less secure than before. Hence, modern power systems are more prone to widespread failures. The device that has enhanced the safe and reliable operation of the network and has contributed to capacity augmentation is Flexible AC Transmission System (FACTS). But this is very expensive and must be suitably sized and located to maximize the overall benefit to the system. The paper aims at determining the optimal location and size of the Static Var Compensator (SVC) by optimizing the multi-objective function formulated by different factors that define the system security, namely, voltage deviation, system overload and real power losses. The multi-objective optimization function has been optimized using a Modified Bacterial Foraging Optimization Algorithm (MBFOA). The results are presented and analyzed for an IEEE-30 bus test system and compared with the popular Genetic Algorithm (GA).

 
 

A Flexible AC Transmission System (FACTS) was introduced in 1980s in the field of power electronics and now being utilized as an efficient and low-cost means to control power transfer (Hingorani and Gyugyi, 2000). Thus, it is widely used in an interconnected AC transmission system (Stagg and El-Abid, 1968; and Hingorani and Gyugyi, 2000). In the conventional power system, there is very small control over the variables such as phase angles, bus voltages and line impedances. These variables control power flow, and a change in any of them can change the power flow. The FACTS device controls these variables, and hence the power flow gets controlled indirectly. Due to this, they provide better stability of power system network, like voltage stability, line stability, small signal stability, transient stability and enhance power transfer capability. This in turn improves the system reliability. The FACTS device plays a vital role in controlling the power flow in AC transmission systems (Camacho, 1999; and Canizares and Faur, 1999).

 
 
 

Electrical and Electronics Engineering Journal, Flexible AC Transmission System (FACTS), Static Var Compensator (SVC), System security, Modified Bacterial Foraging Optimization Algorithm (MBFOA), IEEE 30 Bus system, Genetic Algorithm (GA).