Optimal Tuning of SVC-PI Controller using Whale Optimization Algorithm for Angle Stability Improvement

Abstract

This paper proposed a new swarm-based optimization technique for tuning conventional proportional-integral (PI) controller parameters of a static var compensator (SVC) which controls a synchronous generator in a single machine infinite bus (SMIB) system. As one of the Flexible Alternating Current Transmission Systems (FACTS) devices, SVC is designed and implemented to improve the damping of a synchronous generator. In this study, two parameters of PI controller namely proportional gain, K<sub>P</sub> and integral gain, K<sub>I</sub> are tuned with a new optimization method called Whale Optimization Algorithm (WOA). This technique mimics the social behavior of humpback whales which is characterized by their bubble-net hunting strategy in order to enhance the quality of the solution. Validation with respect to damping ratio and eigenvalues determination confirmed that the proposed technique is more efficient than Evolutionary Programming (EP) and Artificial Immune System (AIS) in improving the angle stability of the system. Comparison between WOA, EP and AIS optimization techniques showed that the proposed computation approach gives better solution and faster computation time.

Oscillation stability enhancement using multi-objective swarm based technique for smib system

“…K 1 , K 2 , K 3 , T 3 , K 4 , K 5 and K 6 are constants associated with the operating real and reactive load, impedance ratio, electrical torque, excitation level, rotor speed and rotor angle in the generator. Detail calculation of the system can be found in [4].…”

“…Comprehensive calculation of the system in Figure 1 can be found in [4]. Parameter values for the generator, transmission line, exciter and SVC controllers of the SMIB system are selected based on parameters in [6].…”

“…Over the past few decades, there are various techniques that have been proposed for controlling SVC to improve the damping of synchronous engines. Among the methods proposed are proportional-integral (PI) controllers [4,5], proportional-integral-derivative (PID) controllers [6][7][8][9] and lead lag (LL) controllers [10,11]. In this paper, a combination of SVC with PID controller (SVC-PID) has been chosen to improve oscillation stability in power system.…”

Modeling of static var compensator-high voltage direct current to provide power and improve voltage profile

“…The use of flexible alternating current transmission system (FACTS) and high-voltage direct current (HVDC) equipments are considered by designers of electrical transmission networks due to the increased demand for transmission networks, the creation of long transmission line routes, long distance of production centers from consumption centers, accumulation of energy resources in specific places and wide distribution of consumption centers [1]- [8]. This equipment can control both active and reactive power simultaneously, regulate voltage range and reduce power flow on overloaded lines by creating the desired voltage level [9]- ISSN: 2088-8694 Int J Pow Elec & Dri Syst, Vol.…”

Optimal Energy Scheduling Strategy in Power System using Bat Algorithm Optimization Approach

“…Optimization approaches are frequently chosen to tune variables of devices in solving power system stability problems. Some new algorithms, such as Particle Swarm Optimization [15][16][17], Gravitational SearchAlgorithm [18][19][20], Firefly [21][22][23], Whale Optimization Algorithm [24][25][26], Ant Colony Optimization [27][28][29], Flower Pollination Algorithm [30][31][32], Moth Flame Optimization [33][34][35] and Bat Algorithm [36][37][38] have also gained attention because of their efficiency. These algorithms are inspired from nature with the characteristic of the investigated biological system.…”