Reference : Dynamic Equivalent of a Distribution Grid Hosting Dispersed Photovoltaic Units
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Engineering, computing & technology : Electrical & electronics engineering
Dynamic Equivalent of a Distribution Grid Hosting Dispersed Photovoltaic Units
Chaspierre, Gilles mailto [Université de Liège - ULiège > > > Doct. sc. ingé. & techno. (électr., électro. & inf- paysage)]
Panciatici, Patrick [RTE > R&D dept. > > >]
Van Cutsem, Thierry mailto [Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation >]
In press
IREP’2017 Symposium: X Bulk Power Systems Dynamics and Control Symposium
IREP’2017 Symposium
form August 27th to September 1st, 2017
[en] active distribution networks ; photovoltaic units ; motor loads ; short-term dynamics ; dynamic equivalents
[en] This paper deals with the derivation of a simplified model of a distribution network hosting dispersed photovoltaic units. The model is aimed at short-term dynamic simulations
of a transmission grid in response to large disturbances. In a first step, a generic dynamic model of a photovoltaic unit is proposed, focusing on its interactions with the grid, in particular the controls triggered by voltage disturbances. The model takes into account various present and near-future grid codes. In a second step, a dynamic equivalent is derived accounting for the distribution network, the dispersed photovoltaic units, as well as static and dynamic (motor) loads. This equivalent is of the “grey-box” type and its parameters are tuned in the least-square sense to match the dynamic response of the original, unreduced system. Simulation results are reported on a detailed 913-bus distribution system subject to faults at transmission level.
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