A Hybrid Physics-Based and Data-Driven Model for Power Distribution System Infrastructure Hardening and Outage Simulation

Hughes, William; Zhang, Wei; Cerrai, Diego; Bagtzoglou, Amvrossios C.; Wanik, David W.; Anagnostou, Emmanouil N.

doi:10.1016/j.ress.2022.108628

Cited by 17 publications

(7 citation statements)

References 52 publications

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“…The range of 18-30 m/s is close to the 16-27 m/s reported to represent the range dominated by faults occurring from a complex set of factors [69]. Modeling this complexity with fragility functions is difficult, resulting in the predictions of machine-learning-based models being more accurate [69]. However, above this range, all the fault mechanisms become dominated by wind, and thus a single physics-based fragility function form is well suited to represent the dependency [69].…”

Section: Electricity System Vulnerabilitysupporting

confidence: 68%

“…The wind gust speed of 18 m/s is when faults start to occur, and 30 m/s is close to the record of the windstorm for which the original function was fitted. The range of 18-30 m/s is close to the 16-27 m/s reported to represent the range dominated by faults occurring from a complex set of factors [69]. Modeling this complexity with fragility functions is difficult, resulting in the predictions of machine-learning-based models being more accurate [69].…”

Section: Electricity System Vulnerabilitysupporting

confidence: 51%

See 1 more Smart Citation

Electricity Load Lost in the Largest Windstorms—Is the Fragility-Based Model up to the Task?

Jasiūnas,

Láng-Ritter,

Heikkinen

et al. 2023

Energies

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Most existing models for estimating electric system impacts from windstorms tend to have detailed representation only for the electric or only for the meteorological system. As a result, there is little evidence on how models with detailed electric systems and realistic wind gust field representations would perform in different windstorm cases. This work explores the evidence for the ability of such a fragility-based model to generate realistic spatiotemporal lost load profiles for the most impactful windstorm cases in Finland. The literature review shows multiple driving factors for windstorm impacts that are difficult to assess analytically, and similarities between the most impactful windstorms. All the available interruption data for thirteen years were analyzed, with their grouping by individual storm and calm periods. The fixing of time distribution fits for these periods show most faults as being within the 20% uncertainty bounds of the severity-dependent distribution trendlines. The medium-voltage electricity grid impact model with national coverage was applied for the three most impactful and most recent windstorm cases, with the model calibrated for one case. The generated spatiotemporal lost load profiles in all cases recreate historic profiles within the similar error margins of approximately 20%.

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Section: Electricity System Vulnerabilitysupporting

confidence: 68%

Section: Electricity System Vulnerabilitysupporting

confidence: 51%

Electricity Load Lost in the Largest Windstorms—Is the Fragility-Based Model up to the Task?

Jasiūnas,

Láng-Ritter,

Heikkinen

et al. 2023

Energies

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“…The actual outcome will help determine that. Second, the two methods can be blended to improve the prediction [15].…”

Section: Physics/data Fusionmentioning

confidence: 99%

Digital Twin Certified: Employing Virtual Testing of Digital Twins in Manufacturing to Ensure Quality Products

Grieves

2023

Machines

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Quality products are a main focus for manufacturers. Product users only determine a product to be a quality product if it performs in operation to the user’s perceived standard. Product manufactures need to take a product lifecycle quality (PLQ) perspective of quality and not simply focus on manufacturing quality control, which is more accurately specification control. Manufacturing is the key phase where products take their physical form. There are increasing costs and decreasing risks of different physical quality strategies. The information provided using digital twins and virtual testing promises to be both low risk and cost and has the potential to predict what the customer will experience in operation by testing products passively with data and actively with simulation to destruction. Digital Twin Certified (DTC) is proposed as the methodology for accomplishing this. DTC will be especially important for the adoption of additive manufacturing.

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“…(13b) For the parameter estimation method, matrices 𝚿 and 𝐘 0 are first obtained from 𝐀 and 𝐁 according to (11) and ( 12), and then 𝐙 and 𝐘 are obtained from 𝚿 and 𝐘 0 according to (13a) and (13b). Finally, resistive, inductive and capacitive matrices of the line are calculated as 𝐑 = Re{𝐙}, (14a) 𝐋 = Im{𝐙}/𝜔, (14b) 𝐂 = Im{𝐘}/𝜔, (14c) where 𝜔 is the angular frequency.…”

Section: B Parameter Estimation From the Reconstructed Modelmentioning

confidence: 99%

“…Second, the challenging grid conditions under the worldwide scenario of aging grid infrastructure [9] exposed to extreme weather conditions [10] require of models that are not only physics-based, but also data-driven [11] to account for variations of operational conditions of power components throughout their lifetime for applications such as fault detection, predictive maintenance, asset life-cycle management, etc. This is particularly true for overhead lines given their long extension and direct exposure to diverse environments and weather conditions.…”

Section: Introductionmentioning

confidence: 99%

Wideband parameter estimation of three-phase untransposed frequency-dependent transmission lines from terminal measurements

Alqahtani¹,

Gómez²

2023

Preprint

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<p>This paper introduces a wideband parameter estimation approach for untransposed three-phase overhead transmission lines. The proposed method involves an accurate reconstruction of the 2-port nodal model of the line over a wide frequency band from terminal measurements obtained for a set of tests. The minimum norm least-squares method is applied for the solution of the overdetermined mathematical system resulting from these tests. The reconstructed model is further solved for the series impedance and shunt admittance matrices without the need for modal decupling techniques. Terminal voltage and current measurements used as inputs are simulated using software ATP for several tests that consider different tower configurations. The estimated parameters are compared with those computed analytically, with very close results when compared with analytical parameter calculation considering full frequency dependence. </p>

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A Hybrid Physics-Based and Data-Driven Model for Power Distribution System Infrastructure Hardening and Outage Simulation

Cited by 17 publications

References 52 publications

Electricity Load Lost in the Largest Windstorms—Is the Fragility-Based Model up to the Task?

Electricity Load Lost in the Largest Windstorms—Is the Fragility-Based Model up to the Task?

Digital Twin Certified: Employing Virtual Testing of Digital Twins in Manufacturing to Ensure Quality Products

Wideband parameter estimation of three-phase untransposed frequency-dependent transmission lines from terminal measurements

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