Power quality disturbances assessment during unintentional islanding scenarios. A contribution to voltage sag studies
This paper presents a novel voltage sag topology that occurs during an unintentional islanding operation (IO) within a distribution network (DN) due to large induction motors (IMs). When a fault occurs, following the circuit breaker (CB) fault clearing, transiently, the IMs act as generators due to...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/174589 |
| Acceso en línea: | https://hdl.handle.net/2117/174589 https://dx.doi.org/10.3390/en12163198 |
| Access Level: | acceso abierto |
| Palabra clave: | Electric motors, Induction Electric power distribution Power quality Voltage sags Islanding operation Induction machines Modelling Distribution networks Motors elèctrics d'inducció Energia elèctrica--Distribució Àrees temàtiques de la UPC::Energies Àrees temàtiques de la UPC::Energies::Energia elèctrica Àrees temàtiques de la UPC::Energies::Tecnologia energètica Àrees temàtiques de la UPC::Enginyeria mecànica Àrees temàtiques de la UPC::Enginyeria mecànica::Motors |
| Sumario: | This paper presents a novel voltage sag topology that occurs during an unintentional islanding operation (IO) within a distribution network (DN) due to large induction motors (IMs). When a fault occurs, following the circuit breaker (CB) fault clearing, transiently, the IMs act as generators due to their remanent kinetic energy until the CB reclosing takes place. This paper primarily contributes to voltage sag characterization. Therefore, this novel topology is presented, analytically modelled and further validated. It is worth mentioning that this voltage sag has been identified in a real DN in which events have been recorded for two years. The model validation of the proposed voltage sag is done via digital simulations with a model of the real DN implemented in Matlab considering a wide range of scenarios. Both simulations and field measurements confirm the voltage sag analytical expression presented in this paper as well as exhibiting the high accuracy achieved in the three-phase model adopted. |
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