Nonlinear hierarchical global controller considering wide-area information delay

Yu, G.; Zhang, B.H.; Wang, C.G.; Bo, Z.Q.

doi:10.1109/pes.2009.5275598

Cited by 2 publications

(8 citation statements)

References 7 publications

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“…As before, the vast majority of hierarchical controllers are designed for damping inter-area oscillations [65], [67], [105], [109], [113], [116], [117], [126], [147], [151], [169], [171], [178], [181], [196], [211], [223], [250]. From the remaining 17 papers, 4 present control strategies for improving rotor-angle stability [90], [145], [153], [202], 4 for improving frequency stability [203], [242], [251], [252]; 2 papers address voltage stability [132], [254]; and 7 propose control strategies for addressing two or more types of stability [44], [64], [66], [68], [136], [140], [158]. Although the proposal in [242] is presented as a distributed control strategy, the proposal considers a centralized and a distributed signal in a hierarchical manner, thus we classified it as hierarchical architecture-based strategy.…”

Section: ) Hierarchical Controlmentioning

confidence: 99%

Review of Wide-Area Controllers for Supporting Power System Stability

et al. 2023

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Countries around the world are transitioning from conventional power systems dominated by synchronous generators towards low-carbon resources, characterized by high levels of converter-interfaced generators (CIGs). With this transformation, hundreds or even thousands of fast power electronic devices will be added to the grid as CIG penetration increases, thus making the system dynamic response progressively faster and more complex. This future scenario poses significant challenges in power system stability and control. To sustain power system stability in future power systems and achieve a seamless transition, we need to depart from current control practices based on decentralized and stand-alone local control actions and begin to explore new methods. A promising technology to overcome control complexities and underlying stability issues in future low-inertia power systems are wide area control (WAC). Within this technology, the control is no longer based on a purely localized tasks but rather a set of coordinated actions across wide areas in which interplant communication plays a key role. This paper presents the state of the art of existing research efforts in the field of WAC strategies for maintaining stability in large-scale low-inertia power systems of the future. We present different WAC solutions that have been put forward hitherto, we put these control strategies into context, classify them, and finally relate them to each other. We also raise open questions and challenges that need to be addressed in order to ensure a secure transition towards power systems dominated by CIGs. INDEX TERMS Power system control, power system stability, time delays, telecommunication issues, widearea measurement systems (WAMSs), wide-area power systems (WAPSs), wide-area control (WAC), power system control architecture, control techniques.

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Section: ) Hierarchical Controlmentioning

confidence: 99%

Review of Wide-Area Controllers for Supporting Power System Stability

et al. 2023

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“…To save space, it is just mentioned that (12.1) is proved by replacement in the differential equation and (12.2) is proved by using (15) to show that ( ) ( ) = ( ) ( ) . with Ψ , Ψ , Ψ given in (14), (15) and z k being equal to x k .…”

Section: A Time-discretization With Delaymentioning

confidence: 99%

“…where Φ( ) = exp (13.1) Γ( ) = (13.2) To save space, it is just mentioned that (12.1) is proved by replacement in the differential equation and (12.2) is proved by using (15) to show that…”

Section: A Time-discretization With Delaymentioning

confidence: 99%

“…In [13,14], delays are taken into consideration by assuming that the delays of different links have the same value and centralized control is designed using the Smith predictor method. Other works include application of Lyapunov based techniques for time delay systems [15,16,17,18] that can guarantee the stability and performance with conservativeness.…”

Section: Introductionmentioning

confidence: 99%

“…Lemma 1 for the case of d = 0 we have = with Ψ , Ψ , Ψ given in(14),(15) and z k being equal to x k .If d > 0, then we write d = qh+r such that= max ∈ ℤ: ℎTo applying Lemma 1 when d > 0we consider that for t ∈ (kh, kh+r] we have ( ) = and for t ∈ (kh+r, kh+h] we have ( ) = and we should apply the lemma successively twice. The result can be compactly presented as…”

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confidence: 99%

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Design and evaluation of distributed networked control for a dual-machine power system

Tavassoli

Amraee

Amanzadeh

2017

2017 Iranian Conference on Electrical Engineering (ICEE)

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Abstract:Oscillations between swing modes of electric machines is an important limitation in achieving a high level of transient performance and reliability in power grids. Based on the new advances in measurement and transmission of wide-area information, this work proposes a distributed networked control scheme by considering the communication delays. The results are applied to reduce the inter-area swing oscillations in a power grid. In comparison with the previous works, we provide a more realistic modeling of the resulting networked control system with data sampling and delays. The exactness of the proposed modeling allows for precise evaluation and comparison between the distributed and decentralized schema. A symmetric a dual machine power system is highly oscillatory and we focus on this case to evaluate the ability of the proposed control design in dampening of the oscillations. The design can be done either based on optimization of a quadratic cost function or a disturbance attenuation level.

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Nonlinear hierarchical global controller considering wide-area information delay

Cited by 2 publications

References 7 publications

Review of Wide-Area Controllers for Supporting Power System Stability

Review of Wide-Area Controllers for Supporting Power System Stability

Design and evaluation of distributed networked control for a dual-machine power system

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