TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Improved Real-Time Stability Assessment of Grid-Connected Converters Using MIMO-Identification Methods

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoThe 10th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2018)
AlaotsikkoSeptember 23 – 27, 2018, Portland, Oregon, USA
KustantajaIEEE
Sivut5322-5329
Sivumäärä8
ISBN (elektroninen)978-1-4799-7312-5
DOI - pysyväislinkit
TilaJulkaistu - 6 joulukuuta 2018
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaIEEE Energy Conversion Congress and Exposition - Portland, Yhdysvallat
Kesto: 23 syyskuuta 201827 syyskuuta 2018

Conference

ConferenceIEEE Energy Conversion Congress and Exposition
MaaYhdysvallat
KaupunkiPortland
Ajanjakso23/09/1827/09/18

Tiivistelmä

Several stability and power quality problems have been reported recently in power systems, which experience a high penetration of power electronics converters, such as renewable energy inverters. The problems are often caused by the interaction between the converter and the grid impedance. Stability monitoring tools have been presented to gain insight into the stability margin of the power system. Online methods are most favorable since the power system has many parameters that vary with time. However, the online methods that have been presented may produce inaccurate estimate of the stability margin due to several simplifications, such as using reduced-order impedance models. This paper introduces an improved dq-domain stability analysis that takes into account the time-varying grid impedance in real time and also the multivariable inverter output impedance, including the crosscouplings.