Test Whats new message.
Scheduled Maintenance on Monday 1/13/2025
Single article sales and account management will be unavailable from 5:00 AM - 7:00 PM ET (09:00 - 23:00 UTC). We apologize for the inconvenience.
Issue 1 • Jan.-1993
Showing 1-25 of 58
Sort By
Ground resistance of the foot in substation yards
Publication Year: 1993,Page(s):1 - 6
Cited by: Papers (12)
Equations and graphs given in IEEE Std 80 to determine ground resistance are not accurate and give conservative results. More accurate equations and graphs for determining the ground resistance of the human foot in a substation with a thin surface layer of gravel are given. An analysis has been made for models of the foot. In one model the foot is represented by an equivalent circular plate and in...Show More
Effective ground resistance of the human feet in high voltage switchyards
Publication Year: 1993,Page(s):7 - 12
Cited by: Papers (8)
The ground resistance of the feet, which is an important factor that determines the current flow in the body of a person exposed to dangerous touch voltage in a high-voltage switchyard, is modified by the proximity of the two feet and the presence of the energized grounding grid below the feet. Based on the Thevenin approach, a general method for determining the effective ground resistance of the ...Show More
Effective ground resistance of the human feet in high voltage switchyards
Year: 1993 | Volume: 8 | Issue: 1
An advanced computer model for grounding system analysis
Publication Year: 1993,Page(s):13 - 23
Cited by: Papers (47)
An advanced methodology and a computer model for analysis of practical grounding systems based on the method of moments are presented. The practical methodology is applicable to both simple and complex grounding systems. The grounding system may consist of cylindrical conductors as well as rectangular earth conductors or metallic surfaces buried in earth or located on the surface of the earth. The...Show More
Design modification and layout of utility substations for six phase transmission
Publication Year: 1993,Page(s):24 - 30
Cited by: Papers (11)
Evaluations performed on the New York State Electric and Gas Corporation's 115-kV Goudey-Oakdale line and Goudey and Oakdale substations to assess the capability of the existing equipment operate as part of a six-phase demonstration project are described. The design modifications that will be made to meet the goals of the commercial demonstration and to allow integration into the existing three ph...Show More
Design and type test of a light-triggered thyristor valve for back-to-back systems
Publication Year: 1993,Page(s):31 - 37
Cited by: Papers (1)
The design of directly light-triggered, water-cooled thyristor valve was designed and manufactured as an extension for the Shin-Shinano frequency converter station (back-to-back system, 300 MW, 125 kV-2400 A) of Tokyo Electric Power Co. is described. The light-triggered thyristor, triggering LED and light guides, gating system, cooling, and structural design are covered. Various tests conducted in...Show More
A survey of industry practices regarding shielding of substations against direct lightning strokes
Publication Year: 1993,Page(s):38 - 47
Cited by: Papers (9)
Results of a survey of industry practices regarding shielding of substations against direct lightning strokes are presented and analyzed. The survey is based on responses from 114 companies, including consultants and utilities both from within and from outside North America. The survey identifies the shielding design methods in use, the factors affecting the selection of a shielding method, the sh...Show More
Application of fault location system in power substations
Y. Mukaiyama;K. Mizuno;A. Horide;T. Sakakibara;S. Maruyama;I. Kamata;A. Shinoda
Publication Year: 1993,Page(s):48 - 55
Cited by: Papers (9)
A series of development tests carried out when developing sensors for GIS (gas-insulated switchgear) fault location systems for is described. The sensors are for detecting pressure waves, pressure rises, arc lights, tank vibrations, and ground wire currents caused by fault current arcs. Application methods are presented, and actual applications are considered.<>
Show More
First Page of the Article
Show MoreDevelopment of expert system for operation at substation
S. Kumano;N. Ito;T. Goda;Y. Uekubo;S. Kyomoto;H. Kourogi;Y. Ariura
Publication Year: 1993,Page(s):56 - 65
An expert system that offers support information in substation fault occurrence is described, focusing on a method for fault section estimation. This system edits fault information and estimates the fault section. With respect to the fault section. With respect to fault section estimation, a method that makes maximum use of sequential information on protective relay and circuit breaker operation e...Show More
Development of expert system for operation at substation
S. Kumano;N. Ito;T. Goda;Y. Uekubo;S. Kyomoto;H. Kourogi;Y. Ariura
Year: 1993 | Volume: 8 | Issue: 1
Modeling of converter transformers using frequency domain terminal impedance measurements
Publication Year: 1993,Page(s):66 - 72
Cited by: Papers (26)
Frequency-dependent node-to-node impedance function (NIF) models of power system equipment based on systematic broad frequency range (50 Hz to 1 MHz) external driving point impedance measurements are described. Such models are needed to calculate and predict the radio frequency electromagnetic (EM) noise produced by the valve ignition of a converter station. The application of the transformer freq...Show More
This addendum to the bibliography on gas-insulated substations (ibid., vol.4, no.2, Apr. 1989) updates the bibliography to mid-1991. References are broken down by subject under the broad headings of dielectric, equipment, and general.<>Show More
Study of turn-on test method for high-voltage thyristor valve
Publication Year: 1993,Page(s):83 - 89
Cited by: Papers (6)
Digital simulations have been conducted to analyze the thyristor valve turn-on phenomenon while a valve arrester is conducting, which gives the most severe turn-on stress for the valve. The effects of various other parameters have also been clarified. Based on this analysis, two test methods are proposed that verify a valve turn-on during arrester conduction, and their effectiveness is described. ...Show More
A critical analysis of grounding practices for railroad tracks in electric utility stations
Publication Year: 1993,Page(s):90 - 96
Cited by: Papers (18)
This analysis looks for common trends of voltages along railroad tracks in a controlled model of a substation grounding system during a ground fault. Several cases are used to illustrate some of the most common techniques used to limit hazardous voltages, and some of these techniques are found to be quite ineffective. Except for cases in which the tracks near the substation were removed, the poten...Show More
Cost reduction and minimization of land based on an accurate determination of fault current distribution in shield wires and grounding systems
Publication Year: 1993,Page(s):97 - 103
Cited by: Papers (2)
The authors describe the methodology used in a careful analysis of the fault current distributions in neutral metallic paths, power system protection requirements, and ground potential rise (GPR) evaluations carried out at FPL's Lauderdale power plant and associate switchyard. These studies resulted in substantial cost savings and land utilization minimization for the power system expansions at La...Show More
Effects of deteriorated and contaminated substation surface covering layers on foot resistance calculations
Publication Year: 1993,Page(s):104 - 113
Cited by: Papers (14)
It is shown that significant inaccuracies can occur when the ANSI/IEEE Std 80 method for calculating foot resistances is applied in substations covered by a thin layer of crushed rock or similar covering layers. In particular, the errors obtained by using the infinite series expression of the foot resistance are consistently larger than those produced by the simplified expression for clean and con...Show More
Verification of the seismic resistance of gas-insulated switchgear (GIS)
Publication Year: 1993,Page(s):114 - 120
Cited by: Papers (4)
A brief introduction to the background of seismic requirements is given, and the test procedure for demonstrating the capability of gas-insulated switchgear (GIS) to withstand seismic stresses up to highest ground accelerations of 0.75 g. are described. The verification methods for checking the test object after test are also described. As vibrational tests are very cost-intensive and therefore ca...Show More
Verification of the seismic resistance of gas-insulated switchgear (GIS)
Year: 1993 | Volume: 8 | Issue: 1
Reliability of GIS EHV epoxy insulators: the need and prospects for more stringent acceptance criteria
Publication Year: 1993,Page(s):121 - 131
Cited by: Papers (10)
Partial discharge (PD) scaling relationships, based on a recently developed theory, that allow prediction of PD magnitude in equivalent defects in different insulators for gas switchgear are presented. To maintain high levels of reliability, PD acceptance criteria of 0.5 to 1.0 pC are proposed for 550 kV insulators to obtain a standard of severity equivalent to that in existence at 138 kV. To achi...Show More
An in progress experience on seismic qualification of gas insulated substations
Publication Year: 1993,Page(s):132 - 138
An approach to the seismic qualification of standardized gas-insulated substations (GISs) is presented. Starting from experimental and analytical activities performed on standardized metal-enclosed primary distribution substations (170 kV), a methodology suitable for lower (MV) and higher (EHV and UHV) voltage ranges is defined, taking into account the site characteristics in terms of seismic seve...Show More
The effect of distribution system grounding on MOV selection
Publication Year: 1993,Page(s):139 - 145
Cited by: Papers (11)
Since most MOV arresters do not incorporate a gap in their design, the arrester is always in conduction and considered to be much more prone to damage due to steady-state line-to-neutral overvoltage. The authors investigate design parameters that affect this overvoltage, using a calculation method that considers a detailed representation of neutral grounding electrodes and their resistances which ...Show More
Comparison of different test methods to assess the thermal stresses of metal oxide surge arresters under pollution conditions
Publication Year: 1993,Page(s):146 - 155
Cited by: Papers (11)
Laboratory tests investigating the thermal performance of surge arresters under contamination and wetting environmental conditions that lead to nonuniform voltage stresses along the arresters are reported. The validity and repeatability of various laboratory test procedures are examined. The results are analyzed by means of a mathematical and a physical model.<>Show More
Failure of surge arresters on low-voltage mains
Publication Year: 1993,Page(s):156 - 162
Cited by: Papers (5)
The use of a secondary arrester on low-voltage AC supply mains to prevent damage to electronic equipment is addressed. Some failure mechanisms of secondary arrester are described, and ways to minimize risks from possible failure of the arrester are suggested. Applications of secondary arresters and fuses are discussed.<>Show More
Dynamic characteristics of high-speed operated, long-stroke bellows for vacuum interrupters
T. Tsutsumi;Y. Kanai;N. Okabe;E. Kaneko;T. Kamikawaji;M. Komma
Publication Year: 1993,Page(s):163 - 167
Cited by: Papers (3)
The authors observed and analyzed the dynamic characteristics of long-stroke stainless steel bellows for a vacuum interrupter when it is extended and contracted at high speeds. The dimensions of bellows tested are: outer diameter 85 mm, inner diameter 62 mm, number of folds 44 and 55. They are tested at contraction speeds of 4 m/s and extension speeds of 2 m/s and 1 m/s. It was found that increasi...Show More
Electrical endurance and reliability of circuit-breakers-common experience and practice of two utilities
Publication Year: 1993,Page(s):168 - 174
Tests carried out for HV and MV equipment are described. They have been designed to represent an equivalent stress level designed to represent an equivalent stress level borne over 25 years in a modern system and provide a good compromise between cost and representativeness. Twenty years of experience shows that the tests make it possible to satisfactorily check aspects of dimensioning relevant to...Show More
Influence of switching operations on the vacuum interrupter dielectric strength
Publication Year: 1993,Page(s):175 - 181
Cited by: Papers (15)
The influence of switching operations on dielectric strength of vacuum interrupters is described. Detailed experimental procedure and numerical processing of experimental results are presented. The breakdown voltage and emission current before and after switching operations were experimentally determined for closing without current/breaking without current, closing without current/breaking with ra...Show More
Influence of switching operations on the vacuum interrupter dielectric strength
Year: 1993 | Volume: 8 | Issue: 1
Development of a new 6.6 kV/ 1500 A class superconducting fault current limiter for electric power systems
Publication Year: 1993,Page(s):182 - 192
Cited by: Papers (78)
A superconducting current limiter comprising a noninductively wound AC superconducting coil (trigger coil) connected in parallel with a limiting coil was developed. A model electric power system for the application of this type of superconducting current limiter was created, 400 V/100 A class model superconducting current limiters were fabricated, and various current limiting tests were performed ...Show More
Tests of 34.5-kV expulsion fuses at the Los Angeles Department of Water and Power
Publication Year: 1993,Page(s):203 - 211
A 34.5 kV, three-phase, three-wire, 60 cycle subtransmission systems serving as a distribution system is considered. Transformers are fused using pole-mounted and metal-enclosed cabinet-mounted fuses, selected to coordinate with directional overcurrent and pilot wire relays at substations. Tests carried out to characterize the system parameters necessary for proper operation of the fuse are descri...Show More
Tests of 34.5-kV expulsion fuses at the Los Angeles Department of Water and Power
Year: 1993 | Volume: 8 | Issue: 1
Contact Information
Editor-in-Chief
New York University, Department of Electrical and Computer Engineering
Brooklyn
USA
fdeleon@nyu.eduContact Information
Editor-in-Chief
New York University, Department of Electrical and Computer Engineering
Brooklyn
USA
fdeleon@nyu.eduIEEE Account
Purchase Details
Profile Information
Need Help?
- US & Canada: +1 800 678 4333
- Worldwide: +1 732 981 0060
- Contact & Support
- About IEEE Xplore
- Contact Us
- Help
- Accessibility
- Terms of Use
- Nondiscrimination Policy
- Sitemap
- Privacy & Opting Out of Cookies
A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity.
© Copyright 2025 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.