Transient Stability Analysis of Virtual Synchronous Generator Equipped With Quadrature-Prioritized Current Limiter
Si Phu Me, Mohammad Hasan Ravanji, Bruno Leonardi, Deepak Ramasubramanian, Jin Ma, Sasan Zabihi, Behrooz Bahrani
Abstract
A current limiter (CL), which protects virtual synchronous generators (VSGs) from overcurrents, may significantly alter the operation of the VSGs when activated. In this letter, a transient stability analysis of VSGs equipped with quadrature (q-)prioritized CL is performed. This study shows that in addition to the instability caused by the positive feedback of the primary controller, a VSG could become unstable after large disturbances due to the failure of the inner voltage controller. In this study, a stability criterion is provided for the voltage control loop.
Topics & Concepts
LimiterControl theory (sociology)Transient (computer programming)VoltageQuadrature (astronomy)Controller (irrigation)AC powerEngineeringComputer scienceElectronic engineeringTelecommunicationsElectrical engineeringControl (management)BiologyArtificial intelligenceAgronomyOperating systemMicrogrid Control and OptimizationPower System Optimization and StabilityHVDC Systems and Fault Protection