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- Title
Model‐driven real‐time control coordination for distribution grids with medium‐scale photovoltaic generation.
- Authors
Krata, Jaroslaw; Saha, Tapan Kumar; Yan, Ruifeng
- Abstract
Increasing penetration of photovoltaic (PV) generation may significantly impact existing voltage regulation schemes. In particular, the lack of coordination between control devices and fast change in PV generation can cause voltage magnitude to go beyond limits. This study addresses the issue by providing a novel real‐time centralised voltage control algorithm to tackle voltage fluctuations caused by variability of PV power generation. The new method considers autonomous response of upstream voltage regulation devices and provides optimised set‐points for the chosen downstream controllers. Furthermore, the investigated method was tested in the real‐time digital simulator on a model of 11 kV grid located in a semi‐rural area of Queensland, Australia. The control algorithm was designed in MATLAB with a multidimensional, non‐linear, mixed‐integer optimisation. The parallel computing implementation of the KNITRO optimiser helped to provide quicker and more accurate response than the existing uncoordinated control schemes. As a result, optimised control coordination leads to a substantial reduction in voltage fluctuations and decrease in regulation time. Moreover, the proposed method detects and eliminates unnecessary control operations. Thus, it can also prevent voltage hunting in distribution networks.
- Publication
IET Renewable Power Generation (Wiley-Blackwell), 2017, Vol 11, Issue 12, p1603
- ISSN
1752-1416
- Publication type
Article
- DOI
10.1049/iet-rpg.2017.0096