Search Results - "Koval, D.O."

Reliability modeling of distributed generation in conventional distribution systems planning and analysis by Chowdhury, A.A., Agarwal, S.K., Koval, D.O.

“…The primary objective of any electric utility company in the new competitive environment would be to increase the market value of the services it provides with…”
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Development of probabilistic models for computing optimal distribution substation spare transformers by Chowdhury, A.A., Koval, D.O.

“…This paper presents probabilistic models developed based on the Poisson probability distribution for determining the optimal number of transformer spares for…”
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Current practices and customer value-based distribution system reliability planning by Chowdhury, A.A., Koval, D.O.

“…Among the major issues facing utilities in today's competitive electricity market is the pressure to hold the line on rates and provide electricity with…”
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System Reliability Worth Assessment Using the Customer Survey Approach by Chowdhury, A.A., Mielnik, T.C., Lawton, L.E., Sullivan, M.J., Katz, A., Koval, D.O.

“…A very popular method utilized in quantifying the benefit of power delivery service reliability is to estimate the customer monetary losses associated with…”
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Reliability Assessment of a Backup Gas Turbine Generation System for a Critical Industry Load Using a Monte Carlo Simulation Model by Chowdhury, A.A., Koval, D.O.

“…The Alberta Interconnected Electric System (AIES) forms a single integrated transmission network serving the Province of Alberta, Canada. A number of large…”
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Application of customer interruption costs in transmission network reliability planning by Chowdhury, A.A., Koval, D.O.

“…A method that can be utilized to ascertain the optimum level of power supply reliability is used to compare the incremental cost of providing reliability with…”
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An Update on the Spreadsheet Electrical Reliability Model by Propst, J.E., Koval, D.O., Zhenfu Dong

“…Over the past 12 years, a number of changes and enhancements have been made to the Spreadsheet Electrical Reliability Model that was introduced at the 1994…”
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Zone-branch reliability methodology for analyzing industrial power systems by Koval, D.O.

“…There are many methods available for evaluating the frequency and duration of load point interruptions within a given industrial power system configuration. As…”
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Impact of circuit breaker failure modes on the reliability of the gold book standard network by Dong, J., Koval, D.O., Zuo, M.J.

“…The failure modes of circuit breakers have a significant impact on individual load point reliability levels of industrial power systems. This paper presents…”
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Reliability of various industrial substations by Zhenfu Dong, Koval, D.O., Propst, J.E.

“…Many utility and industrial substation configurations have been designed to interconnect energy sources and individual industrial load points. The design,…”
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Value-based distribution system reliability planning by Chowdhury, A.A., Koval, D.O.

“…Society is becoming increasingly dependent on a cost-effective reliable electric power supply. Unreliable electric power supplies can be extremely costly to…”
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Canadian national power quality survey: frequency and duration of voltage sags and surges at industrial sites by Koval, D.O., Bocancea, R.A., Kai Yao, Hughes, M.B.

“…The occurrence of voltage sags and surges originating on the primary and secondary sides of industrial facilities can disrupt continuous and noncontinuous…”
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Canadian National Power Quality Survey: frequency of industrial and commercial voltage sags by Koval, D.O., Hughes, M.B.

“…In 1991, the Canadian Electrical Association (CEA) took a proactive approach to power quality problems and initiated a three-year "Canadian National Power…”
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Value-based power system reliability planning by Chowdhury, A.A., Koval, D.O.

“…In a competitive energy market, in which power supply reliability can influence customer purchasing decisions, electric utilities throughout the world are…”
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Impact of manual versus automatic transfer switching on the reliability levels of an industrial plant by Khan, I.K., Jiechun Zheng, Koval, D.O., Dinavahi, V.

“…Detailed reliability modeling and analysis of industrial plants provides an estimate of the frequency and duration of load point interruptions. The duration of…”
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Deregulated transmission system reliability planning criteria based on historical equipment performance data by Chowdhury, A.A., Koval, D.O.

“…In the past, electric utilities were continuously adding more facilities to their systems in order to satisfy the growing customer energy requirements. A…”
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Discussion of "Application of customer interruption costs in transmission network reliability planning" [and closure] by Shih-Min Hsu, Chowdhury, A.A., Koval, D.O.

“…Shih-Min Hsu comments on the paper by A. A. Chowdhury et al. (see ibid., vol.37, p.1590-6, 2001). He comments on transmission systems reliability and the use…”
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Closure to discussion of "Application of customer interruption costs in transmission network reliability planning" by Chowdhury, A.A., Koval, D.O.

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Zone-branch reliability methodology applied to Gold Book standard network by Koval, D.O., Liang Jiao, Arno, R.G., Hale, P.S.

“…There is a need recognized in the power industry to identify and utilize a standard tool or a set of tools to analyze the reliability of industrial and…”
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Development of transmission system reliability performance benchmarks by Chowdhury, A.A., Koval, D.O.

“…The reliability of an electric utility transmission system is a measure of its ability to continuously meet the demands of all its customers (i.e., points of…”
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