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Full-Text Articles in Engineering
Investigation Into The Local Nature Of Change Of Frequency In Electrical Power Systems, Damien Doheny
Investigation Into The Local Nature Of Change Of Frequency In Electrical Power Systems, Damien Doheny
Student Journal of Energy Research
Over the coming years it is expected that considerably more wind power will be connected to the Irish power system. This will result in a power system that at times of high wind power penetration will operate with very low inertia, making the system susceptible to large rate of change of frequency (RoCoF) events due to disturbances. These high RoCoF events could result in the cascade tripping of generators connected to the grid resulting in complete shutdown of the system. This paper investigates the differences between local RoCoFs seen at individual buses and system wide RoCoFs seen across the entire …
Ray Tracing Technique For The Optimal Design Of An Air Heater Concentrating Collector, Fernando Guerreiro
Ray Tracing Technique For The Optimal Design Of An Air Heater Concentrating Collector, Fernando Guerreiro
Student Journal of Energy Research
There is a wide range of micro and macro renewable and sustainable energy methods available for reducing the inefficient use of fossil fuels, minimising carbon emissions and maximising energy use in a clean and environment-friendly process. Solar energy plays an important role due to its abundance and ubiquity. Solar air heaters convert solar energy into hot air to be used for heating and drying of various products. The objective of this paper is to define and optimise the geometry of an inverted absorber compound parabolic concentrating (IACPC) collector for air heating. This optimisation was developed based on an optical analysis …
Short Term Demand Forecasting For The Integrated Electricity Market, Katie Kavanagh
Short Term Demand Forecasting For The Integrated Electricity Market, Katie Kavanagh
Student Journal of Energy Research
This paper presents a means for the short term load forecasting (STLF) of electricity. The forthcoming Integrated-Single Electricity Market (I-SEM) diverges from the current market structure (the Single Electricity Market or SEM), with significant impacts on Irish supply companies, creating a need for these companies to be able to accurately forecast their customers’ load in the Day Ahead. Using a Double Seasonal Exponential Smoothing variation of the Holt-Winters method that factors in an error correction, data from the Irish market was trained and used to forecast a supply company’s demand resulting in an average daily MAPE (Mean Absolute Percentage Error) …