Time-delay compensation of a wide-area measurements-based hierarchical voltage and speed regulator

Zabaiou, Tarik; Okou, Francis A.; Dessaint, L.-A.; Akhrif, Ouassima

doi:10.1109/cjece.2008.4621832

Cited by 9 publications

(10 citation statements)

References 12 publications

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“…Hierarchical controllers total 35 works, from which 17 correspond to non-explicit hierarchical structure controllers. 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].…”

Section: ) Hierarchical Controlmentioning

confidence: 99%

“…Some authors categorize strategies that use centralized control signals coordinated with local measurements as hierarchical ones [64], [65], [66], [67], [68]. However, such classification contradicts the above definition, as no explicit hierarchical structure with different levels of communicational hierarchy nor explicit system partition into smaller subsystems can be identified.…”

Section: ) Hierarchical Controlmentioning

confidence: 99%

“…Table 1 summarizes the total number of works included in the database. In total, 181 papers were found using the aforementioned search criteria ( [44], [45], [49], [55], [56], [57], [58], [59], [60], [61], [62], [64], [65], [66], [67], [68], [73], [78], [80], [81], [90], [96], [104], [105], [106], [107], [108], [109], [110], [111], [112], [113], [114], [115], [116], [117], [118], [119], [120], [121], [122], [123], [124], [125], [126], [127], [128], [129],…”

Section: Classification Of Control Strategiesmentioning

confidence: 99%

“…Therefore, the Smith predictor works to control a modified feedback variable (the predicted variable) instead of using the fast model by itself. In [65] and [250], a classical Smith predictor is used to preserve performance in presence of large remotemeasurement time-delays. One of the drawbacks of this approach is its difficulty to ensure a minimum damping ratio of the closed loop poles when the open-loop plant is poorly damped.…”

Section: B: Smith Predictormentioning

confidence: 99%

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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%

Section: ) Hierarchical Controlmentioning

confidence: 99%

Section: Classification Of Control Strategiesmentioning

confidence: 99%

Section: B: Smith Predictormentioning

confidence: 99%

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Review of Wide-Area Controllers for Supporting Power System Stability

et al. 2023

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“…In case this requirement is fulfilled, the possible time delays do not affect the proposed control strategy performance. If the latency is longer, a phase compensator can be used, such as those based on lead lag filters [19,59,60], Padé approximations [51,61], Smith predictor [62][63][64]o r phase-shift techniques [65]. Time delays longer than 50 ms have to be avoided since the required control bandwidth could not be enough to damp the SSR oscillations, as mentioned in [23,24].…”

Section: Communication Time Delaysmentioning

confidence: 99%