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Transmission & Distribution Construction, Operation & Live-Line Maintenance Proceedings, 1998. ESMO '98. 1998 IEEE 8th International Conference on

26-30 April 1998

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  • ESMO '98 - 1998 IEEE 8th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Proceedings [front matter]

    Publication Year: 1998, Page(s):1 - 8
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    Freely Available from IEEE
  • Live work in Eskom Transmission

    Publication Year: 1998, Page(s):11 - 18
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1005 KB)

    Live line maintenance has been performed with great success by Eskom Transmission (South Africa) over the last 20 years. An aerial live line maintenance capability was established 10 years ago. Techniques, tools and procedures have been developed to maintain the South African transmission network, which is unique in many ways, to a level that meets the expectations of customers as far as quality, ... View full abstract»

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  • Automated apparatus for live work on overhead transmission lines

    Publication Year: 1998, Page(s):19 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (462 KB)

    An automatic device for live working on overhead power transmission lines is under development in the Ukraine. The automated plug-in unit for insulator replacement (APUIR) employs robotized plug-in sub-assemblies to replace defective insulators and perform other tasks. The APUIR, which is mounted on an insulated lifting arm and is operated by a computer or an operator at ground level, is placed on... View full abstract»

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  • Live working on vintage 138 kV steel lattice structures

    Publication Year: 1998, Page(s):27 - 32
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (785 KB)

    Live working on very old structures often poses unique challenges, such as dealing with the effects of arc rings and the behavior of old insulators. This paper presents the results of tests conducted for Public Service Electric and Gas (USA) to confirm that very old broken insulators can be replaced live on 138 kV double-circuit steel lattice structures with suspension I-strings. Each string had n... View full abstract»

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  • ESMO '98 - 1998 IEEE 8th International Conference on Transmission and Distribution Construction, Operation and Live-Line Maintenance Proceedings ESMO '98 Proceedings. ESMO 98 The Power is in Your Hands

    Publication Year: 1998
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    Freely Available from IEEE
  • Development of load balanced arm work method

    Publication Year: 1998, Page(s):41 - 48
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (671 KB)

    The authors have been shifting distribution line maintenance work from direct live line operation to indirect operation with manipulators and hot sticks for the sake of improving safety and the working environment of workers. The load balanced arm work method (Super-Arm II WorkMethod) is inexpensive but effective in saving labor. It offers the convenience of a manipulator and the maneuverability o... View full abstract»

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  • Development of the construction methods for distribution line materials using a robot system remotely controlled from the ground

    Publication Year: 1998, Page(s):49 - 55
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (559 KB)

    The construction method for distribution line materials using a robot system is one of the techniques developed in order to increase the efficiency of the distribution line works. This method enables a simpler, safer and more highly efficient means of installing line materials and heavy devices on utility poles which is a major job for overhead construction. Features of the developed robot system ... View full abstract»

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  • Granular backfill selection for direct embedded poles

    Publication Year: 1998, Page(s):56 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    The ultimate capacity and moment-displacement behavior of direct embedded transmission line pole foundations are dependent on the strength and deformation properties of the backfill material placed in the annulus surrounding the pole. This paper summarizes research conducted to measure: the strength and deformation properties of granular backfill materials; and their influence on direct embedded p... View full abstract»

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  • Rock-socketed drilled shaft design for lateral loads [overhead power line foundations]

    Publication Year: 1998, Page(s):62 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (634 KB)

    This paper describes the analytical studies and seven full-scale foundation load tests that were conducted to study the behavior and improve the analysis and design of laterally loaded drilled shaft overhead power line foundations partially or totally socketed in rock. Finite element analyses were conducted to develop new theoretical pressure versus displacement (p-y) relationships for the four-sp... View full abstract»

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  • OSHA update-/spl conint//spl conint/91910.137, 1910.269, and Subpart V [power system safety]

    Publication Year: 1998, Page(s):71 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (523 KB)

    Section 1910.137 of OSHA standards covers electrical protective equipment. Section 1910.269 (commonly known as the "maintenance standard" in the electric utility industry) addresses the maintenance and operation of electric power generation, transmission and distribution installations. These two standards were published in the Federal Register on January 31, 1994. This paper presents an update of ... View full abstract»

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  • Deregulation of the electric power industry

    Publication Year: 1998, Page(s):79 - 88
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (465 KB)

    Whether willing participants or not, the United States, as a nation, have embarked on a grand experiment in electric service competition. Those who favor this competition claim that open electric markets will bring better service, lower rates and a more robust economy. Opponents believe the more likely result will be a downsized workforce, unreliable service quality, higher rates for average consu... View full abstract»

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  • Understanding the OSHA electrical standards and compliance guidelines [power system safety]

    Publication Year: 1998, Page(s):89 - 98
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (763 KB)

    This paper discusses various aspects of OSHA rule making and rule interpretations in order to help the reader understand and implement the resulting rules. A number of the more controversial or confusing requirements of 29 CFR Part 1910 Section 269 Electric Power Generation, Transmission, and Distribution Standard are used to illustrate some of the available interpretation sources. View full abstract»

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  • Maintaining line worker safety through maintenance and testing of protective grounding equipment

    Publication Year: 1998, Page(s):101 - 107
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (437 KB)

    Worker safety during de-energized line maintenance has always been important, but maintenance of protective grounding equipment was often overlooked. With OSHA CFR 1910.269 sub-part R in Jan. 1994 this changed. Equipment, with suitable accuracy is now available to assist in equipment evaluation. This paper describes some of that equipment, operating principles and positive and negative features of... View full abstract»

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  • "Zero Injury" safety program implementation as related to current construction industry financial risk management: a success story

    Publication Year: 1998, Page(s):108 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (473 KB)

    The purpose of this paper is to describe: results of research done by Clemson University for the Construction Industry Institute (CII) through the Zero Injury Task Force; successful implementation of Zero Injury Safety Program in the Tennessee Valley Authority Division of Transmission Construction where a Zero Injury Goal (Zero Lost Workday Case Incident Rate) was achieved and sustained for 2 1/2 ... View full abstract»

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  • Testing personal protective grounds

    Publication Year: 1998, Page(s):115 - 118
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (603 KB)

    Personal Protective Grounds, Ground Sets or "Ground Chains" are intended to provide protection to the electrical worker by maintaining a sufficiently low voltage across an individual in the event of unexpected line energization. Energization can occur from numerous sources including lightning, falling conductors and operational errors such as closing the wrong switch or breaker. Generally 50 volts... View full abstract»

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  • Safety shield for hot sticks-protection from electric arcs. Test results and field experience

    Publication Year: 1998, Page(s):119 - 127
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (563 KB)

    This paper presents test results on safety shields conducted in accordance with ASTM PS 57 and PS 58 methods, utilizing the same equipment, fault current and duration as in testing of flame retardant fabrics. Safely shields on hot sticks were subjected to power arcs with fault current of 15.4 kA for 22 to 30 cycles. The test results show that the safety shield provides protection from the electric... View full abstract»

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  • An innovative method for insulators washing in energised lines

    Publication Year: 1998
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (289 KB)

    A major problem experienced by Red Electrica de Espana in certain coastal areas, as well as highly industrialised inland areas, involves insulator contamination, which leads to countless flashovers in the system. Red Electrica has developed a new insulator washing system, based on a nacelle permanently suspended from the helicopter throughout the insulator high-pressure washing process. The nacell... View full abstract»

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  • Automatic hot line insulator washing device positioned by helicopter

    Publication Year: 1998
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (66 KB)

    Live line maintenance is an essential tool for fully exploiting existing lines and facing the increasing power quality demand. Among the maintenance operations, insulator washing is of particular interest especially in those regions where the pollution is very high such as coastal areas, desert regions and others. These operations can be classified as environmentally hostile and would benefit from... View full abstract»

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  • Development of new technology to access the energized phase by walking along the strain string on 500 kV transmission lines and substations

    Publication Year: 1998, Page(s):135 - 140
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (702 KB)

    The maintenance of 500 kV transmission lines and substations requires a great amount of manual services on its insulator strain strings, conductors and hardware. The conventional method of gaining access to the hot end of strings uses a long insulated ladder (longer than 6 m), numerous accessories, which involves great effort and the work of many electricians. This paper looks into a method develo... View full abstract»

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  • Factors affecting determination of the minimum approach distance

    Publication Year: 1998, Page(s):141 - 146
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    The purpose of this paper is to review the factors, which influence the accuracy of the calculations, used to determine minimum approach distances (MAD) used by electric utilities in the United States. Working standards are established to assure that no flashover will occur at the work site with workers present. To obtain the minimum approach distance required, it is first necessary to determine t... View full abstract»

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  • Development of a hot-line work robot, "Phase II" and a training system for robot operators

    Publication Year: 1998, Page(s):147 - 153
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (563 KB)

    Since 1990, Kyushu Electric Power Co. Inc. (KEPCO) has actively strived for development of a semi automatic hot-line work robot system, called Phase II. At this point, to expand automated tasks performed by the robot, we have developed a two-point laser measuring method based on measurements of the work object's position and orientation. Additionally, a simplified robot language exclusively for Ph... View full abstract»

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  • IEC method of calculation of minimum approach distances for live working

    Publication Year: 1998, Page(s):154 - 159
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (619 KB)

    After 10 years and as many drafts, proposed IEC standard 61472 is now in the final voting stage. The standard, when published, will define the IEC method of calculating minimum approach distances (MAD) for live working for use world-wide. The standard 61472 provides a method of calculating MAD for voltages between 1 kV and 800 kV AC. In common with other standards, the MAD is taken to consist of t... View full abstract»

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  • Probabilistic assessment of the reduction in tensile strength of an overhead transmission line's conductor with reference to climatic data

    Publication Year: 1998, Page(s):161 - 166
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (495 KB)

    The tensile strength of an overhead transmission line's conductor in response to a growing load is being assessed in this paper. It is the authors' view that the percentage reduction in the conductor's tensile strength is a key index that can be used to determine a conductor's end of life. This paper describes a probabilistic method of assessing this index for a given line with due reference to th... View full abstract»

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  • Managing risk on available transmission capacity using performance contracting

    Publication Year: 1998, Page(s):167 - 171
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (307 KB)

    Deregulation of the electric utility industry is transforming a once vertically integrated organization into four separate, stand alone profit centers: power generation, wholesale power delivery (typically transmission lines and substations 69kV and greater), retail power delivery and energy services sometimes referred to as GENCO, TRANSCO, DISCO and ESCO, respectively. The management and director... View full abstract»

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  • How outage management systems can improve customer service

    Publication Year: 1998, Page(s):172 - 178
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    This paper presents how currently, implemented outage management systems (OMS) can improve an electric utility's operations and provide additional customer services for that utility. These systems have been developed with interfaces into supervisory control and data acquisition (SCADA), automatic meter reading systems (AMR), utility call centers, customer information systems (CIS), and an automate... View full abstract»

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