Wang Sue, Li Jing, Riaz Saleem, Zaman Haider, Hao Pengfei, Luo Yiwen, Mohammad Al-Sharef, Al-Ahmadi Ahmad Aziz, Ullah Nasim
School of Electrical and Control Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
School of Automation, Northwestern Polytechnical University, Xi'an 710072, China.
Math Biosci Eng. 2022 Aug 18;19(12):12031-12057. doi: 10.3934/mbe.2022560.
The growth of distributed generation significantly reduces the synchronous generators' overall rotational inertia, causing large frequency deviation and leading to an unstable grid. Adding virtual rotational inertia using virtual synchronous generators (VSG) is a promising technique to stabilize grid frequency. Due to coupled nature of frequency and active output power in a grid-tied virtual synchronous generator (GTVSG), the simultaneous design of transient response and steady state error becomes challenging. This paper presents a duplex PD inertial damping control (DPDIDC) technique to provide active power control decoupling in GTVSG. The power verses frequency characteristics of GTVSG is analyzed emphasizing the inconsistencies between the steady-state error and transient characteristics of active output power. The two PD controllers are placed in series with the generator's inertia forward channel and feedback channel. Finally, the performance superiority of the developed control scheme is validated using a simulation based study.
