The use of generator circuit breakers in power stations was investigated and evaluated. A feasibility study to determine if the additional capital cost required, when using a generator circuit breaker in a power station could be justified by the advantages it provides. The background to the study is provided through a technology and literature survey. Included in the technology review and the literature study is information on interruption mediums, the historic developments of circuit breakers and generator circuit breaker application theory. This data was used to determine the practicality of using a specific interruption medium within a generator circuit breaker application. The requirements of generator circuit breakers were determined and used to evaluate the interruption mediums in question. To ensure practical results, commonly used layouts were used to determine the effect of using a generator circuit breaker on the reliability, availability and the mean time to repair of a power station electrical distribution layout. Furthermore, the effect of the protection on the generator and generator transformer was evaluated. It was found that increased selectivity of the protection system by using a generator circuit breaker limits the extent of equipment damage in case of failure. Practical layouts were used to determine the effect on reliability. The analysis was conducted using assumed values of operational costs to determine the cost incurred through the change in reliability of the power station. By adding a generator circuit breaker, the station transformer and associated equipment is regarded as back-up or redundant equipment. This increases the reliability of the power station dramatically and limits the risk of income lost due to failures. The full evaluation included the estimation of the capital investment costs and the impact that the additional cost has on the operational requirements of a power station. The study determined that the capital cost required to use a generator circuit breaker results in no additional income for a power station. Through the increased protection, higher availability and the possible omission of power station ancillary equipment, the use of generator circuit breakers will result in more power being delivered and more income generated by a power station. The study proved that the generator circuit breaker is a critical part of a power station layout and is a necessary capital requirement to ensure the sustainability of the power station. / Thesis (M.Ing. (Electrical and Electronic Engineering))--North-West University, Potchefstroom Campus, 2010.

The aim of this thesis was to develop a model of a receiver which could be quickly used to analyze radiated interference levels from data captured at the output of the antenna equipment used to measure radiated energy. Active circuits were mainly used in developing this model for the ease with which the design and simulations could be carried out in OrCAD. The guiding document for the thesis work has been CISPR 16-1-1 (International Special Committee on Radio Interference part 16-1-1) which specifies the characteristics and performance of equipment for the measurement of radiated interference. The testing of this receiver model was carried out as far as possible based on the test setups recommended in CISPR, and all results have been compared with the standards laid down for the model. Using the results, it will be shown that a CISPR EMI receiver can be modeled as a simple EMI receiver consisting of filtering, mixing and detecting circuits built according to specifications.

The thesis discusses the mediating role of socioeconomic factors in risk debates through an examination of the decontamination and demolition of Fulham Power Station in 1983-1984. The power station was built between the wars by and for the people of Fulham. Located on the Thames in the neighbourhood of Sands End, it generated electricity and provided employment until 1978, when it was sold to a property development company. During the decontamination, a quantity of asbestos was released into the environment. A protest group was formed to secure better standards of work at the site. The group never had more than a dozen active members. All the members were middle-class. At the time of the decontamination and demolition, Sands End was a poor neighbourhood. A majority of the local population faced many 'social' as well as environmental hazards. Amongst these were sub-standard housing, unemployment, under-employment, low wages, inadequate work and educational skills and crime. The thesis discusses whether the neighbourhood's socioeconomic problems had any bearing on the character and dynamics of the power station debate. It suggests that the social geography and economic status of Sands End had two major effects on the debate. Firstly, gentrification provided the neighbourhood with a (small) middle-class constituency receptive to issues of environmental risk, such as the long-term health implications of airborne asbestos dust. Secondly, the neighbourhood's pressing social and economic problems mitigated against a wider involvement in the campaign. Most residents were too preoccupied with meeting their social and economic needs to become actively involved. The thesis also suggests that the population's experience of Fulham Power Station as a source of 'convenient' electrical power, employment and civic pride may have made it difficult for those native to Sands End to accept the activists' construction of the power station as a source of danger.

Thesis (B.A.Hons. 1979) from the Department of History, University of Adelaide.

Thesis (D. Min.)--New Orleans Baptist Theological Seminary, 1993. / Includes abstract and vita. Includes bibliographical references (leaves 158-164).

Thesis (D. Min.)--Gordon-Conwell Theological Seminary, 2006. / Includes bibliographical references.

Thesis (Ph. D., Microbiology, Molecular Biology and Biochemistry)--University of Idaho, March 2007. / Major professor: Ronald L. Crawford. Includes bibliographical references. Also available online (PDF file) by subscription or by purchasing the individual file.

Thesis (M.A.)--Trinity International University, 2008. / Abstract. Includes bibliographical references (leaves 99-109).

Thesis (M.S.)--Ohio University, March, 1993. / Title from PDF t.p.

Thesis (Ed.D.)--Teachers College, Columbia University. / Typescript; issued also on microfilm. Sponsor: Arno A. Bellack. Dissertation Committee: Dwayne Huebner. Includes bibliographical references.