|Title:||The Impact of Large-Scale Renewable Energy on Grid Small-Signal and Frequency Stability: Modelling, Analysis, and Control|
power system stability
energy storage system
|Publisher:||University of Sydney|
Yonsei University Korea
Faculty of Engineering and Information Technologies
School of Electrical and Information Engineering
|Abstract:||This thesis intends to discuss the influence of renewable energy sources (RES) on the stability of power system. Although integration of renewable brings incalculable optimistic aspects, the variability of RES concerning fluctuation of active power may exhibit adverse influence on stability issues regarding small-signal and frequency stability point of views. Thus, this thesis discusses those two stability aspects. From small-signal stability perspectives, the agenda is divided into three parts. First small signal research investigates the influence of time-varying RES on low frequency oscillation, which triggers weak frequency band of vulnerable modes on remote area. Second study of small signal is to observe the influence of high penetration change on interarea oscillation. Third research of small signal is to investigate the influence of solar irradiation and wind velocity with stochastic characteristics on small signal stability due to the change of the generation quantity of photovoltaics (PV) and wind turbine generators (WTG). From frequency stability perspectives, the future grid might be operated under reduced inertia and high penetration, resulting in deterioration of frequency stability. Against this backdrop, ESS emerges as a countermeasure for the implications of large fleet of RES. First chapter of frequency stability aspects introduces ESS methodology enabling ESS to coordinate ancillary service among existing equipment with proposed method: droop control and State-of-Charge feedback (DaSOF). The last chapter suggests a method for EV application, based on Smart Charging method and DaSOF method. The efficacy of large group of EV application with this method against variability of RES is investigated and proved on the Jeju island system in Korea.|
|Description:||Doctor of Philosophy (Cotutelle)|
As per the Cotutelle Agreement signed by Yonsei University and the University of Sydney, this thesis is submitted in fulfillment of the requirements of a doctoral degree jointly offered and awarded by the two universities.
|Type of Work:||PhD Doctorate|
|Type of Publication:||Doctor of Philosophy Ph.D.|
|Appears in Collections:||Sydney Digital Theses (Open Access)|
|SHIM_JW_thesis.pdf||Thesis||7.36 MB||Adobe PDF|
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