An improved Backstepping technique using sliding mode control for transient stability enhancement and voltage regulation of SMIB power system

Keskes, Salma; Bouchiba, Nouha; Kammoun, S.; Sallem, Souhir; Chrifi‐Alaoui, Larbi; Kammoun, Mohamed Ben Ali

doi:10.1080/00207721.2018.1481239

Cited by 5 publications

(8 citation statements)

References 12 publications

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“…To demonstrate its effectiveness, the proposed control strategy is compared with: ① robust excitation controller [24]; ② separately designed linear AVR/PSS and SVC+PI controller.…”

Section: Simulation Resultsmentioning

confidence: 99%

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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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“…To demonstrate its effectiveness, the proposed control strategy is compared with: ① robust excitation controller [24]; ② separately designed linear AVR/PSS and SVC+PI controller.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Therefore, under the feedback control law (24), the zero dynamics closed-loop system is asymptotically stable and can be written as: (t) is non-increasingly bounded, lim t ® ¥ ∫ 0 t Ω(τ)dτ < ¥ holds. In addition, since Ω ̇is bonded, lim t ® ¥ Ω = 0 holds due to Barbalat's lemma.…”

Section: A Design Of Backstepping Controller For X-subsystemmentioning

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

Self Cite

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show abstract

“…where g 1 (ξ) and g 2 (ξ) are nonlinear functions that can be found using equations (18) and (4). In our case, these functions are linearized around an operating point to get a local approximation in the form…”

Section: Integrator Loopmentioning

confidence: 99%

“…Accordingly, they have designed an adaptive controller based on LaSalle's invariant principle to make the system oscillations damped. The paper [18] has investigated the problem of transient stability and voltage regulation for a SMIB system via a modified backstepping control design method. However, most of the previous works either have not considered the effects of input saturations, they have been designed for some simplified linear and/or nonlinear models of the SMIB, there are usually steady state errors on the outputs of their methods or they have assumed that all the states of the system are available to be measured.…”

mentioning

confidence: 99%

Observer-based tracking control for single machine infinite bus system via flatness theory

Aghababa

Marinescu

Xavier³

2021

IJECE

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In this research, we aim to use the flatness control theory to develop a useful control scheme for a single machine connected to an infinite bus (SMIB) system taking into account input magnitude and rate saturation constraints. We adopt a fourth-order nonlinear SMIB model along an exciter and a turbine governor as actuators. According to the flatness-based control strategy, first we show that the adopted nominal SMIB model is a flat system. Then, we develop a full linearizing state feedback as well as an outer integral-type loop to ensure suitable tracking performances for the power and voltage as well as the angular velocity outputs. We assume that only the angular velocity of the generator is available to be measured. So, we provide a linear Luenberger observer to estimate the remaining states of the system. Also, the saturation nonlinearities are transferred to the linear part of the system and they are canceled out using their estimations. The efficiency and usefulness of the proposed observer-controller against faults are illustrated using simulation tests in Eurostag and Matlab. The results show that the clearing critical time of the introduced methodology is larger than the classical control approaches and the proposed observer-based flatness controller exhibits over much less control energy compared to the classic IEEE controllers.

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“…Several approaches have been proposed in the literature to improve stability and voltage regulation of power systems. These approaches include the design of modern nonlinear controllers, which take into account the non-linearity of power systems, in order to reduce the effects of major disturbances (Chaudhary and Singh, 2014; Kenné, 2010; Keskes et al, 2018). The types of controllers already mentioned have shown the good performance of transient stability.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear coordinated control design of generator excitation and static var compensator for power system via input-output linearization

Keskes

Sallem

Kammoun

2020

Transactions of the Institute of Measurement and Control

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This paper proposes a nonlinear coordinated controller for a single machine infinite bus power system. The later consists of a synchronous generator connected to the infinite bus via transmission lines, which are equipped with a static var compensator. The proposed control strategy aims to control simultaneously the excitation system of the synchronous generator and the static var compensator in order to improve transient stability and voltage regulation. The input output linearization theory and pole-assignment technique are employed to design the nonlinear controller. The controller’s performance in single machine infinite bus power system is then examined using simulation studies when the studied power system is subjected to three-phase short circuit with a 100ms duration. The results validate the efficiency of the proposed controller, which is based mainly on the good regulation of the static var compensator voltage with removing the static error after fault elimination.

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An improved Backstepping technique using sliding mode control for transient stability enhancement and voltage regulation of SMIB power system

Cited by 5 publications

References 12 publications

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

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

Observer-based tracking control for single machine infinite bus system via flatness theory

Nonlinear coordinated control design of generator excitation and static var compensator for power system via input-output linearization

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