Virtual Synchronous Generator Model Control of PV for Improving Transient Stability and Damping in a Large-scale Power System

Abstract

Because of the significant changes in environmental policies and electric power deregulation in the last decade, a lot of photovoltaic generations (PV) have been and will be installed into the power system in Japan and the ratio of PVs to other synchronous generators will be increased. As a countermeasure against the decrease in the rotational inertia in the whole power system, a virtual synchronous generator (VSG) model control of the PV has so far been proposed. However, the system stabilization effect of the VSG in large-scale power systems has been unclear. In this paper, a virtual step-out blocking method of VSG for improving the transient stability is proposed. In addition, the necessity of governor control of VSG in a large-scale power system is discussed.Finally, the rated kw and kwh capacities of the battery required for realizing the VSGmodel control are evaluated. K E Y W O R D Sdamping, photovoltaic generation, power system, transient stability, virtual synchronous generator Electr Eng Jpn. 2019;208:21-28.

Concurrent frequency–voltage stabilization for hybrid microgrid with virtual inertia support

“…Therefore, Bevrani et al [15] developed a detailed outline of virtual synchronous generator (VSG) for islanded power systems with distributed generation. This model is improved in [27] to enhance the transient stability of large-scale power networks. In order to damp the oscillation, energy storage unit (ESU) based VSG is utilized [28].…”

Controle Inercial e de Frequência Baseado em Gerador Síncrono Virtual Aplicado à Geração Fotovoltaica de Grande Porte

“…No entanto, poucos trabalhos abordam a implementação do GSV na geração PV. Além disso, a maioria desses poucos trabalhos considera o GSV aplicado apenas ao banco de baterias associado à geração PV (Nogami et al, 2018). A implementação do GSV em sistemas fotovoltaicos de pequeno porte conectados à rede foi proposta em Mei et al (2016) e a implementação do GSV em sistemas fotovoltaicos isolados foi proposta em Guo et al (2016).…”