voltage recovery; inverter-based generation; dynamic system optimization; voltage stability
Abstract :
[en] As the inverter-based generation replaces the conventional synchronous generators, it may also need to fill in the missing ancillary service support. One of these ancillary services is dynamic reactive power provision and voltage control. This paper analyzes optimal strategy of reactive and active fault-current support of the inverter-based generation leading to fast voltage recovery of the system. For the purpose of the analysis, new ramping active current controller able to emulate different behavior of active current injection is proposed. By optimizing its parameters for different case studies of the system, the conclusions about optimal behavior of the inverter based generation with respect to system parameters and operating conditions are drawn. It is observed that the optimal combination of active and reactive fault-current is the most sensitive to the dynamic load component penetration levels in the system. With the increasing penetration levels, the significance of active fault current injection increases. The results show that with higher penetration levels of dynamic load component in the heavy load areas, the ramping down of the inverter-based generation active fault-current results in slower voltage recovery of the system. Following this conclusion, a recommendation on update of current European grid codes is proposed.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Stankovic, Stefan
Van Cutsem, Thierry ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Söder, Lennart
Language :
English
Title :
Fault-Current Injection Strategies of Inverter-Based Generation for Fast Voltage Recovery
Publication date :
March 2022
Journal title :
IEEE Transactions on Power Systems
ISSN :
0885-8950
Publisher :
Institute of Electrical and Electronics Engineers, United States - New Jersey
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Commentary :
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