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Industry Applications Magazine, IEEE

Issue 3 • Date May/Jun 1998

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Displaying Results 1 - 8 of 8
  • Utility deregulation and its impact on industrial power systems

    Page(s): 40 - 46
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    In this article, the author introduce the current development of electric utility deregulation in the USA and discuss its potential impact on the operation of an example industrial power system View full abstract»

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  • Establishing a lightning protection evaluation program for distribution and subtransmission lines

    Page(s): 18 - 24
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    Union Electric (UE) began a project in December 1994 to evaluate the performance of existing types of lightning protection, identify deficiencies, and recommend changes that will result in improved performance. UE employs two basic types of lightning protection-static wire and arresters. The authors discuss ground impedance, the National Lightning Detection Network, and the Lightning Protection Design Workstation (LPDW). The LPDW is a Windows based software package developed by EPRI to assist in designing an optimum protection scheme. The first step in the evaluation process is to identify lines that have historically performed poorly under lightning conditions. The next step is to conduct pole-by-pole field inspections of the feeders to identify what factors were contributing to the poor performance of each line. Once it is determined that a feeder is in need of improvements and the deficiencies are identified, the LPDW is used to compare alternatives. Two case studies are discussed View full abstract»

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  • A systematic approach to the replacement of an aging distribution system

    Page(s): 32 - 36
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    Cass County Electric Cooperative (CCEC) provides electric service to all or parts of eight counties in southeast North Dakota. CCEC's rural area customer base has caused some concern in the past, because the number of agricultural-based customers has continued to decline, while the size of those remaining has continued to increase. To compound this situation, these rural area customers are being served by an aging overhead and a prematurely failing underground primary distribution system. Therefore, CCEC will begin systematically replacing its overhead and underground distribution systems to provide customers with safe, reliable, and economical electric energy. The author discusses the planning process, overhead and underground replacement processes, and vacant account analysis View full abstract»

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  • Raptor electrocutions

    Page(s): 25 - 31
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    Distribution power line raptor electrocutions have been studied extensively since 1971. Numerous methods to modify power line structures to eliminate the potential for electrocutions have been developed, published, and utilized by the electric utility industry. Some of the modified overhead distribution line construction units have been adopted as standards by investor owned utilities and the Rural Utilities Service, dramatically reducing raptor electrocutions. Although utility construction practices have improved greatly since 1971, some raptor electrocutions still persist. Many utilities today are employing larger crossarms in their new construction to provide increased phase-to-phase and phase-to-ground separation to reduce the potential for electrocutions. Although an emphasis on providing increased phase separation may eliminate some electrocutions, uninsulated jumper wires may pose a greater threat to raptors. A review of utility raptor electrocution forms filed since 1985 indicates that overhead distribution power line poles configured with transformers and bare jumpers are associated with the most raptor electrocutions. Pole configurations and mitigation of raptor electrocutions are discussed View full abstract»

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  • Taking full advantage of utility deregulation

    Page(s): 47 - 56
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    This article describes how a major midwestern US cement plant began a long-term plan to take advantage of electric utility deregulation. Primarily, it focuses on negotiations with the utility company, in combination with in-plant enhancements of equipment, operating procedures, training and team development. Successful results have already produced significant savings for the plant and will continue to generate additional benefits in the future View full abstract»

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  • T2 ACSR conductors: lessons learned

    Page(s): 37 - 39
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    Electric utilities are under increasing pressure to provide better quality service to the customer. In the information age, even momentary interruptions are now unacceptable. The Central Iowa Power Cooperative (USA) has 10 years of experience using variable cross-section ACSR conductor (T2) in an attempt to improve line performance. This article presents a summary of the lessons learned during that time View full abstract»

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  • Micro-turbine generators for distribution systems

    Page(s): 57 - 62
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    This presentation provides an overview of gas turbine generators, beginning with their long history and moving on to their physical, electrical, operating and cost characteristics. The presentation concludes with a selection of important gas turbine generator applications, including cost estimates. The example applications include providing base load power, utility peak shaving, customer peak shaving, uninterruptible power supply (UPS) and standby service View full abstract»

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  • Rural electrification: the long struggle

    Page(s): 6, 8, 10 - 17
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    Bringing the benefits of electricity to farms and rural areas was mostly a dream in the early 20th Century. Many obstacles had to be overcome before the widespread use of rural electric power became practical. Today, many people in the United States have the mistaken idea that rural electrification suddenly appeared in 1935 when the Rural Electrification Administration (REA) was established by executive order and the Rural Electrification Act of 1936 was subsequently passed. This impression is unfortunate for two reasons. First, it fails to recognize the aspirations and contributions of two full generations of electrical engineers, who worked in the field prior to 1935; and second, it ignores significant progress made in other geographical areas of the world. This article explores some of this earlier history, then presents material as prepared by members of the Rural Electric Power Committee (REPC) of the IAS about the history of their committee View full abstract»

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Aims & Scope

IEEE Industry Applications Magazine reports on the development and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; the encouragement of energy conservation; and the creation of voluntary engineering standards and recommended practices.

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Editor-in-Chief
H. Landis "Lanny" Floyd