Abstract
This paper investigates the harmonic stability of a STATCOM connected to the power grid over a 400 km double circuit overhead line. The impedance-based modelling approach is used for the harmonic stability analysis comparing the results from the frequency dependent (FD)-model and the π-model of the 400 km overhead line. It demonstrates that the the π-model approach produces pessimistic phase margin predictions leading to a conservative harmonic stability evaluation. The impedance model of the STATCOM is built in the αβ-frame, where the impacts of the inductive and capacitive operation modes are analysed. It reveals that the STATCOM introduces a negative resistance in the inductive operation mode, which may negatively interacts with the resonance frequencies of the grid. Time domain simulations using EMTDC™/PSCAD™ validate the critical stability point found by the impedance-based stability analysis.
Original language | English |
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Title of host publication | Proceedings of 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL) |
Number of pages | 8 |
Publisher | IEEE |
Publication date | 10 Sept 2018 |
Pages | 1-8 |
Article number | 8458496 |
ISBN (Print) | 978-1-5386-5542-9 |
ISBN (Electronic) | 978-1-5386-5541-2 |
DOIs | |
Publication status | Published - 10 Sept 2018 |
Event | 19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018 - Padova, Italy Duration: 25 Jun 2018 → 28 Jun 2018 |
Conference
Conference | 19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018 |
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Country/Territory | Italy |
City | Padova |
Period | 25/06/2018 → 28/06/2018 |