Fast Frequency Response From Smart Induction Motor Variable Speed Drives

Malekpour, Mostafa; Azizipanah‐Abarghooee, Rasoul; Teng, Fei; Štrbac, Goran; Terzija, Vladimir

doi:10.1109/tpwrs.2019.2936970

Cited by 24 publications

(16 citation statements)

References 15 publications

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“…Some of the aforementioned drawbacks are addressed in [8, 10–12]. The authors in [8] estimate the potential of industrial induction motors in Great Britain for providing FFR using local droop control.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Malekpour et al . [11] showcased a reduced efficacy of the control scheme for a lower inertia scenario. In contrast, Ibrahim et al .…”

Section: Introductionmentioning

confidence: 99%

“…However, achieving a coordinated response within such a population of conventional devices, that can only operate at a fixed power or be turned off, is difficult as it requires considering and estimating the behaviour of all contributing units. In contrast, emerging variable-speed drive (VSD) technologies, studied in [6][7][8][9][10][11][12], offer a continuous controllable range for a single unit, hence simplifying the aggregated control.…”

Section: Introductionmentioning

confidence: 99%

“…More precisely, the entire load unit is typically subsumed within a single low-order transfer function and the dynamic interactions between the units and the grid are usually neglected. Some of the aforementioned drawbacks are addressed in [8,[10][11][12]. The authors in [8] estimate the potential of industrial induction motors in Great Britain for providing FFR using local droop control.…”

Section: Introductionmentioning

confidence: 99%

“…The size of the considered reserve is comparable to spinning reserve in Great Britain, but ramp-rates are introduced to avoid regeneration of unidirectional units. This approach has been extended in [10,11], which designs a droop-based control that replicates the inertial response of an online motor, while Malekpour et al [11] developed an adaptive control scheme to avoid regeneration of the induction motor. Nonetheless, only the secondary-side dynamics of the drives are included and the inertia present in the considered test cases is not particularly low.…”

Section: Introductionmentioning

confidence: 99%

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Modelling of variable‐speed refrigeration for fast‐frequency control in low‐inertia systems

et al. 2020

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In modern power systems, shiftable loads contribute to the flexibility needed to increase robustness and ensure security. Thermal loads are among the most promising candidates for providing such service due to the large thermal storage time constants. This study demonstrates the use of variable-speed refrigeration (VSR) technology, based on brushless DC motors, for the fast-frequency response. First, the authors derive a detailed dynamic model of a single-phase VSR unit suitable for time-domain and small-signal stability analysis in low-inertia systems. For analysing dynamic interactions with the grid, they consider the aggregated response of multiple devices. However, the high computational cost involved in analysing large-scale systems leads to the need for reduced-order models. Thus, a set of reduced-order models is derived through transfer function fitting of data obtained from time-domain simulations of the detailed model. The modelling requirements and the accuracy versus computational complexity trade-off are discussed. Finally, the time-domain performance and frequency-domain analyses reveal substantial equivalence between the full-and suitable reduced-order models, allowing the application of simplified models in large-scale system studies.

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Section: Introductionmentioning

confidence: 99%

“…Furthermore, Malekpour et al . [11] showcased a reduced efficacy of the control scheme for a lower inertia scenario. In contrast, Ibrahim et al .…”

Section: Introductionmentioning

confidence: 99%