a simple method is described for analysis of transients in power network. the method is developed for analysis of transformer and generator winding resonances due to their interaction with transmission lines caused by switching surges. the method is already used for calculation of overvoltages which had resulted in damages in the transformer winding of a hydro power plant. nonlinearity in the i...

Regulation 3.49. Due acknowledgement must always be made of the use of any material contained in, or derived from, this dissertation. 2 Acknowledgements I would like to thank a lot of people, whom help me in order to finish successfully this work. Firstly, I would like to thank my supervisor Dr. Andy Grant for his advice and the valuable guidance from the beginning of this project until the end...

Small Hydro-power Plants (SHP) are an important source of electricity in many countries. However, little is known about SHP in Kenya. This paper reviews the status, challenges in implementation of SHP and prospects for future development of SHP in Kenya. The paper shows that SHP has not yet fully utilized the available hydro-power potential. The challenges associated with SHP development should...

This paper deals with a model that comprises the pumped-storage hydro power plants in system reliability and availability calculations, as well of impact inflow deficiency water storage risks on operational planning such within framework systems for periods up to one year. The uncertainties is related characteristics watercourses where reservoirs are built, but also operation cycles possible mo...

s Research Symposium January 2008 Graduate Student Association Department of Natural Resources Cornell University Mark Bain Hydro Peaking and Green Energy: St. Marys River, Ontario and Michigan Hydropower is a clean, flexible, and renewable energy source but its global benefits can come with significant local impacts and environmental losses. The use of hydropower facilities to track variations...

In an interconnected power system, as a power load demand varies randomly both area frequency and tie-line power interchange also vary. The objectives of load frequency control (LFC) are to minimize the deviations in these variables (area frequency and tie-line power interchange) and to ensure their steady state errors to be zero. In this area of energy crisis, renewable energy is the most prom...

This paper provides an overview of the expected role that variable speed hydro power plants can have in future electric power systems characterized by a massive integration of highly variable sources. Therefore, it is discussed the development of a methodology for optimising the operation of hydropower plants under increasing contribution from new renewable energy sources, addressing the partic...

In order to evaluate the reliability characteristics of the electricity generating systems which in addition to thermal plants with unlimited available energy includes also hydroelectric plants, beside the stochastic outages of generating units, the limitation of the – from stochastic inflows dependent – available amounts of primary energy (water) must be also taken into account. Therefore the ...