Assessment of Unintentional Islanding Operations in Distribution Networks with Large Induction Motors

Pau Casals-Torrens, Juan A. Martinez-Velasco, Alexandre Serrano-Fontova and Ricard Bosch
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Pau Casals-Torrens: Department of Electrical Engineering, Polytechnic University of Catalonia, ETSEIB-Av. Diagonal 647, 08028 Barcelona, Spain
Juan A. Martinez-Velasco: Department of Electrical Engineering, Polytechnic University of Catalonia, ETSEIB-Av. Diagonal 647, 08028 Barcelona, Spain
Alexandre Serrano-Fontova: Department of Electrical Engineering, Polytechnic University of Catalonia, ETSEIB-Av. Diagonal 647, 08028 Barcelona, Spain
Ricard Bosch: Department of Electrical Engineering, Polytechnic University of Catalonia, ETSEIB-Av. Diagonal 647, 08028 Barcelona, Spain

Energies, 2020, vol. 13, issue 2, 1-25

Abstract: This paper is aimed at assessing the impact of unintentional islanding operations (IOs) in the presence of large induction motors (IMs) within distribution networks (DNs). When a fault occurs, following the circuit breaker (CB) fault clearing, the IMs act transiently as generators, due to its inertia, until the CB reclosing takes place. The present work is the outcome of a project carried out in a small DN, where field measurements were recorded over two years. This paper provides a detailed description of the test system, a selected list of field measurements, and a discussion on modeling guidelines used to create the model of the actual power system. The main goal is to validate the system model by comparing field measurements with simulation results. The comparison of simulations and field measurements prove the appropriateness of the modeling guidelines used in this work and highlight the high accuracy achieved in the implemented three-phase Matlab/Simulink model.

Keywords: distribution network; electromagnetic transient; induction motor; islanding operation; modeling; power system analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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