Transient stability enhancement and voltage regulation in SMIB power system using SVC with PI controller

Keskes, Salma; Bouchiba, Nouha; Sallem, Souhir; Chrifi‐Alaoui, Larbi; Kammoun, Mba

doi:10.1109/icosc.2017.7958729

Cited by 15 publications

(12 citation statements)

References 4 publications

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“…2.2 Static VAR compensator SVC is a shunt connected FACTS controller which plays a vital role in the compensation of reactive power and thus modulates the level of reactive power and voltage to the desired system level (Keskes et al, 2017;Patel et al, 2018). SVC also enhances the dynamic and transient stability of a system by damping out the oscillations caused because of low frequency operation.…”

Section: Synchronous Machine (Generator)mentioning

confidence: 99%

Modified brain storming optimization technique for transient stability improvement of SVC controller for a two machine system

Choudhury

Dash

2021

WJE

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Purpose Static VAR compensators (SVC) have been recognized to be one of the most important flexible AC transmission systems devices used for mitigating the low-frequency electrochemical oscillations occurring in the system and for reactive power compensation, thereby improving the overall dynamic stability and efficiency of the system. The purpose of this paper is to optimize and dynamically tune the control parameters of the classical proportional integral and derivative (PID) controller of the SVC for a two-machine system by designing a new robust optimization technique. Design/methodology/approach The angular speed deviation between the two machines is used as an auxiliary signal to SVC for generation of the required damping output. To justify the efficacy of the system undertaken, a light load fault at time t = 1 s is projected to the system. The simulation is carried out in MATLAB/Simulink architecture. Findings The proposed technique helps in the enhancement of system efficiency, reliability and controllability and by effectively responding to the non-linearities taking place in a power grid network. The results obtained are indicative of the fact that the proposed modified brain storming optimization (MBSO) technique reduces system disturbances very quickly, increases the system response in terms of better rise time, settling time and peak overshoot and improves the efficiency of the system. Originality/value A detailed comparison of the MBSO technique is compared with the conventional brain storming optimization (BSO) and PID technique. Total harmonic distortion through fast Fourier transform is also compiled to prove that the values of the proposed MBSO method found out to be confined well within the prescribed IEEE-514 boundaries.

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Section: Synchronous Machine (Generator)mentioning

confidence: 99%

Modified brain storming optimization technique for transient stability improvement of SVC controller for a two machine system

Choudhury

Dash

2021

WJE

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“…Several control algorithms were proposed for SVC control [24]. The use of a PI controller with SVC for voltage regulation purposes was discussed in [25]. Hybrid algorithms that use neural networks (NNs) during online mode for voltage balancing and other algorithms to generate the firing angles of the TCR compensator during offline mode were considered [26]− [28].…”

Section: Introductionmentioning

confidence: 99%

Implementation of reactive compensator for voltage balancing using AI based models and novel performance index

Ragab

Ghaeb²

2022

IJPEDS

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Voltage-unbalance is one of the power quality deficiencies that degrades electrical power systems performance. In this work, voltage unbalance problem is tackled through two stages; evaluation using a novel performance index and mitigation using a thyristor-controlled reactor (TCR) compensator with artificial intelligent (AI) based models. Unlike standard performance indices that rely on voltages' root mean square (RMS) values, the proposed index depends on the space vector (SV) signal amplitude for voltage unbalance evaluation. This signal depends on the instantaneous values of the three-phase voltages and has twice the system frequency. Therefore, the proposed index entitled as space vector unbalance factor (SVUF) reflects the amount of voltage unbalance and reduces the time necessary for evaluation by half. Subsequently, advanced models based on several algorithms are proposed to generate the required firing angles for TCR compensator to restore voltage balance, including radial basis functions networks (RBFNs), hybrid-RBFNs (H-RBFNs), polynomials (PNs), and simplified neural networks (NNs). Models' structure, prediction capability, and response time are analyzed. Results show that the time required for voltage unbalance mitigation is reduced. Moreover, the models used to generate the firing angles are simplified significantly while maintaining high accuracy.

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“…Nevertheless, the simultaneous enhancement of transient stability and voltage regulation may be difficult to be achieved by applying the control techniques. In addition, although generator excitation controllers are useful for the enhancement of transient stability or voltage regulation, the stability is no more maintained if a major fault occurs far away from the generator terminals [8].…”

Section: Introductionmentioning

confidence: 99%

“…The coupling of the dynamics of these different controllers is not considered. A proportional integral (PI) controller has been used as an additional command for SVC in [8]. As for the excitation, it is equipped with the conventional regulators such as AVR and PSS.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Coordinated Passivation Control of Single Machine Infinite Bus Power System with Static Var Compensator

Keskes¹,

Salleem²,

Chrifi‐Alaoui

et al. 2021

Journal of Modern Power Systems and Clean Energy

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We propose a nonlinear coordinated control of the generator excitation and the static var compensator (SVC) in order to enhance the transient stability and voltage regulation of power system by the passivation approach. SVC is installed in the middle of the transmission line of power system and consists of a single machine infinite bus (SMIB) system. The design of the proposed controller consists of two parts. On one hand, the generator excitation controller is designed based on a backstepping controller. On the other hand, the conception of SVC control input is based on the coordinated passivation approach, which can guarantee the asymptotic stability of the closed-loop system. The simulation results show the effectiveness of the proposed controller compared with other methods, which ensures better performance than the uncoordinated control when the system is subjected to a disturbance.

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Transient stability enhancement and voltage regulation in SMIB power system using SVC with PI controller

Cited by 15 publications

References 4 publications

Modified brain storming optimization technique for transient stability improvement of SVC controller for a two machine system

Modified brain storming optimization technique for transient stability improvement of SVC controller for a two machine system

Implementation of reactive compensator for voltage balancing using AI based models and novel performance index

Nonlinear Coordinated Passivation Control of Single Machine Infinite Bus Power System with Static Var Compensator

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