Data‐driven robust extended computer‐aided harmonic power flow analysis. Issue 20 (24th August 2020)

• Record Type: Journal Article
• Authors: Nduka, Onyema S.; Ahmadi, Ali R.
• Is Part Of: IET generation, transmission & distribution. Volume 14:Issue 20(2020)
• Page Start: 4398
• Page End: 4409
• Publication Date: 2020-08-24
• Subjects: power system harmonics -- distribution networks -- load flow -- iterative methods; power conservation principle -- practical network conditions -- load unbalance -- practical radial medium voltage distribution networks -- weakly meshed medium voltage distribution networks -- detailed data‐driven technique -- harmonic impacts -- harmonic levels -- harmonic sources -- data‐driven robust extended computer‐aided harmonic power flow analysis -- harmonic producing loads -- 21st‐century smart distribution networks -- robust data‐driven approaches -- abundant harmonic data -- harmonic assessment tool -- time‐stamped data -- practical distribution network -- time‐dependent cross‐coupled harmonic model -- formulated iterative time‐dependent -- harmonic power flow formulation; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2020.0922
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : The surge in the uptake of harmonic producing loads in 21st‐century smart distribution networks has necessitated that robust data‐driven approaches for harmonic assessment be developed. Moreover, there exists abundant harmonic data which can be leveraged on for the construction of this harmonic assessment tool. This is the objective of this study. Large volumes of time‐stamped data acquired from a practical distribution network in Edmonton, Canada, have been used to construct a time‐dependent cross‐coupled harmonic model that has been combined with a formulated iterative time‐dependent robust extended computer‐aided harmonic power flows. The constructed harmonic power flow formulation also considered the constraints relating to the power conservation principle at the fundamental frequency. Practical network conditions including untransposed lines, load unbalance and skin effects of conductors have been thoroughly modelled. The proposed method has been applied to practical radial and weakly meshed medium voltage distribution networks and it demonstrated robustness to initialisation of the iterative procedure. Moreover, findings from this detailed data‐driven technique reveal that harmonic impacts in the distribution networks depend on the quantum of harmonic levels, type of network and location of the harmonic sources.