Digital Commons Network^™

Evaluation Of Renewable Energy Generation And Storage For Industrial Buildings, Craig Pickup

University of Wollongong Thesis Collection 2017+

This research focuses on the financial aspects of the underutilised industrial renewable energy generation and storage market in Australia, where the developed methodology is applied to two distribution warehouses and a large energy consuming manufacturer. Throughout Australia the residential and utility scale renewable energy market is booming, however the industrial market has been lagging behind at a fraction of the residential generation capacity in 2020. This lack of uptake in the industrial market is attributed to perceived costs and lack of industry knowledge. This research simplifies the results of solar PV and energy storage design into key financial metrics that …

Towards A Flexible And Resilient Power Grid With Distributed Energy Resources, Ghulam Mohy Ud Din

University of Wollongong Thesis Collection 2017+

Distributed energy resources (DERs) are growing rapidly due to their potential to avoid massive infrastructure transform, state incentivized policies, climate change targets, and customer-centric investment and services. However, this influx of the DERs has changed the power paradigm, and is disrupting the traditional markets and operation models of the power grids. The work reported in this thesis aims to harness flexibility and resilience for the power grid, providing solutions to the challenges involved in the management of the increasing DERs. To achieve these aims, this thesis proposes end-to-end solutions to plan, coordinate, model, monitor, forecast, and ultimately control and dispatch …

Development Of A Model Predictive Control Method To Optimise The Operation Of A Residential System With Battery Storage And Solar Pv Generation, Asanga Jayawardana

University of Wollongong Thesis Collection 2017+

Microgrid is an emerging concept in the electricity industry. Although there are a few utility-scale operational microgrids around the world, the concept is further reinvigorated by the fast growing connections of distributed generation units to the electricity grid, especially in the form of solar photovoltaic (PV) systems. Connection of combined rooftop solar PV systems and battery storage systems in residential/commercial premises has also broadened the microgrid concept. It is important to investigate the feasibility of optimal operation of renewable residential/commercial systems as the cost for these technologies is still high for small scale investors. This thesis presents the development of …

Detection, Analysis, And Mitigation Of Voltage Sag In Renewable Energy-Rich Power Grids, Most. Sumaiya Hasan

University of Wollongong Thesis Collection 2017+

Amongst all power quality (PQ) problems, voltage sags/dips are the most common occurring disturbances, which can cause significant failure in the customer equipment. This thesis contributes to three areas of voltage sag analysis: First, it contributes to the development of new innovative analytical formulae for the predictive analysis of the single event characteristics (SEC) of a voltage sag based on the system electrical parameter. Second, it contributes to the development of a novel time-frequency domain signal-processing tool for the automatic detection, analysis, and mitigation of time-varying PQ disturbances (PQDs). The developed method is referred to as the automatic segmented Hilbert-Huang …

Investigation Of The Effect Of Tuning Mechanisms On The Operational And Survival State Of A Floating Oscillating Water Column Wave Energy Converter, York Stanham

University of Wollongong Thesis Collection 2017+

This research was undertaken to determine the characteristics governing a thin-walled cylindrical, floating oscillating water column wave energy device with regards to power production and device integrity. This investigation considers how such an oscillating water column wave energy device can be optimised for power production yet still be robust enough to withstand unfavourable storm conditions by tuning mechanisms such as heave added mass changes, power take-off damping changes, and stiffness changes. The investigation also considers how the initial device and oscillating water column sizing affects performance in favourable and unfavourable sea conditions.

This research was undertaken by utilising WAMIT and …

Flow-Induced Vibration Of Pivoted Rigid Circular Cylinders With 1 Degree-Of-Freedom: Application To Energy Extraction From Marine Currents, Andrew Dennis Johnstone

University of Wollongong Thesis Collection 2017+

Flow-induced vibrations (FIV) of bluff bodies subjected to cross-flow have historically been problematic phenomena responsible for fatigue damage and performance and safety issues in a wide range of areas, including, but not limited to, risers in the oil and gas industry, tall buildings, bridges, heat exchanger tubes, lighting towers and suspended power cables.

The present work views FIV phenomena from a different perspective and examines two of the various FIV processes, namely vortex-induced vibration (VIV) and the galloping phenomena, in regard to their viability for extraction of useful energy from fluid cross-flows.

To this end, the vibration response of a …