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Title: Quantifying monetary benefits of intermittent generators to electrical power networks
Author: Pudaruth, Girish Rai
Awarding Body: University of Bath
Current Institution: University of Bath
Date of Award: 2009
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To meet the renewable targets set by the government's renewables portfolio, an increasing penetration of distributed generation, mainly wind energy conversion systems, is expected to connect to the UK power system networks. Since a significant proportion of these generators will connect to distribution networks, it is important for the network owners to evaluate how distributed generators will benefit them. From the distribution network operator's point of view, the understanding of the benefits which different wind developments can bring about is crucial in strategic planning to earn some performance incentives in a more efficient system. This work aims at providing a platform for system operators to evaluate the long-term benefits of connecting intermittent generation to typical UK power system networks, and help decide the most economically viable expansion option. Factors considered in this cost benefit analysis are the network investment deferral, the capacity credit, the reliability improvement and the reduction in system losses brought about by intermittent generation. Each of the factors mentioned were analysed with different wind penetration scenarios, and the magnitude of their benefits quantified. A common test system was then utilised to perform a cost benefit analysis including all the factors and it was seen that an indefinitely increasing wind penetration does not inexorably increase the benefits, unless the network is properly reinforced to accommodate increased generation levels. The largest contributor to benefits brought about by DGs is reliability improvement when wind penetrations of 9, 18 and 26% were considered on the IEEE reliability test system. This is translated into around 68-83% of the benefits due to a reduction in costs associated with interruptions and outages when DGs are allowed to work in islanding mode and additional future reinforcements are disregarded.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available