# IEEE Transactions on Power Delivery

## Filter Results

Displaying Results 1 - 25 of 78
• ### Computer aided design of synthetic test circuits for high voltage circuit-breakers

Publication Year: 1989, Page(s):1049 - 1055
Cited by:  Papers (6)
| | PDF (455 KB)

The authors describe experience acquired in designing test circuits for high-voltage circuits breakers. Circuit synthesis is achieved numerically, using an iterative method which involves the Laplace transform. Different test circuits are considered that are needed to obtain responses specified by ANSI and IEC standards. The specific interactive software has been created to permit automatic synthe... View full abstract»

• ### Discussion, with reply, of "Test results of personal protective grounding on distribution line wood pole construction" by J.T. Bonner, B. Erga, W.W. Gibbs, and V.M. Gregorius

Publication Year: 1989, Page(s):1127 - 1128
| | PDF (825 KB)

Several comments and criticisms are made concerning the above-named work (ibid., vol.4, no.1, Jan. 1989). In particular, the original authors' claim that the personal protective grounds (single-point ground) method is superior to the working ground and bracket ground methods used for worker protection was questioned.<> View full abstract»

• ### RFI source-locating on power lines-an update

Publication Year: 1989, Page(s):1137 - 1144
Cited by:  Patents (3)
| | PDF (880 KB)

The author describes a practical and efficient means for locating RI (radio interference) and TVI (television interference) sources on power lines, particularly those operating below 70 kV, where most complaints originate. The main emphasis is on locating sparking sources on overhead lines, but the location of RFI sources occurring in underground lines and the location of nonspeaking power line so... View full abstract»

• ### Measurement of the electromagnetic environment of HVDC converter stations

Publication Year: 1989, Page(s):1129 - 1136
Cited by:  Papers (13)
| | PDF (660 KB)

The results of an experimental study on the electromagnetic environment of HVDC (high-voltage direct-current) converter stations are presented. Transient EMI (electromagnetic interference) as well as steady-state RI (radio interference) and TVI (television interference) measurements were made at the Arnott station of BC Hydro and the Chateaguay station of Hydro-Quebec. The maximum values of the el... View full abstract»

• ### Comparison between measurement and calculation of line switching with inductive and complex source-modelling requirements

Publication Year: 1989, Page(s):1432 - 1440
Cited by:  Papers (1)
| | PDF (676 KB)

Different models for calculating overvoltages occurring during the energizing of unloaded lines are examined. The models are discussed in relation to both a network with an inductive source and a network with a complex source. Calculations are carried out with the Electro Magnetic Transients Program (EMTP). The calculation results obtained with these models are compared with measurements. Finally,... View full abstract»

• ### The effect of HVAC-HVDC line separation in a hybrid corridor

Publication Year: 1989, Page(s):1338 - 1350
Cited by:  Papers (22)
| | PDF (1064 KB)

The authors present the results of a sensitivity analysis relating the corona and field effects to the variation of the physical parameters of hybrid corridors, with the primary focus on the separation of the two line types. A method for calculating human sensation levels as a function of AC/DC line separation is shown. Graphs are presented which describe surface gradients and audible and radio no... View full abstract»

• ### Electromagnetic interference from digital signal transmission on power line carrier channels

Publication Year: 1989, Page(s):898 - 905
Cited by:  Papers (6)
| | PDF (412 KB)

A procedure is presented to evaluate the electromagnetic field generated by a digital transmission system on multiconductor power-line carrier channels. The vertical component of the electric field and the horizontal component of the magnetic field are defined by approximate formulaes of varying accuracy, depending on the frequency and the distance from phase conductors. Field sources are the curr... View full abstract»

• ### A comparison of HVAC and HVDC contamination performance of station post insulators

Publication Year: 1989, Page(s):1486 - 1491
Cited by:  Papers (6)
| | PDF (496 KB)

Results of HVAC and HVDC (high-voltage alternating current and direct current) artificial contamination tests on station post insulators are reported. The tests were conducted using the clean fog method at various severity levels. The contamination behavior of station post insulators with semiconductive glaze was also evaluated and compared with the performance of post insulators with conventional... View full abstract»

• ### Intermountain Power Project carrier interference study

Publication Year: 1989, Page(s):1205 - 1216
Cited by:  Papers (2)
| | PDF (888 KB)

The authors summarize the results of an interference study performed for the Intermountain Power Project. Interference by noise generated at the converter stations to open-wire carrier telecommunication lines and to power-line carrier systems is investigated. The frequency range considered is 10-200 kHz. The noise level at the converter stations is estimated using a detailed high-frequency digital... View full abstract»

• ### Lightning protection of pole mounted transformers

Publication Year: 1989, Page(s):1087 - 1095
Cited by:  Papers (10)
| | PDF (780 KB)

The authors present an update on Australian experience with recommended lightning protection of distribution transformers, first implemented in 195/6. It is believed that the major reduction in transformer failure rates is directly attributed to the relocation of HV (high voltage) arresters close to the terminals and to the fitting of LV (low voltage) arresters. The recommended protection has virt... View full abstract»

• ### Availability of corona cage for predicting audible noise generated from HVDC transmission line

Publication Year: 1989, Page(s):1422 - 1431
Cited by:  Papers (26)
| | PDF (772 KB)

The authors examine the feasibility of using a corona cage to predict audible noise (AN) generated from an HVDC (high-voltage direct current) transmission line. The possible use of the cage is based on the assumption that generation quantities of AN and corona current are determined by Fmax (the true' maximum conductor surface gradient in the presence of space charge) regardless of the... View full abstract»

• ### Lightning surge response of ground electrodes

Publication Year: 1989, Page(s):1329 - 1337
Cited by:  Papers (55)
| | PDF (844 KB)

Lightning surge currents cause nonlinear ionization and transient propagation when injected into ground electrodes. The low-current footing resistance is modeled in terms of electrode length and surface area. The ionization process follows a similarity method originated by A.V. Korsuncev (1958). Calculation and experiment show the surge response of a conducting ground plane. Electrode shape, soil ... View full abstract»

• ### EHV series capacitor banks: a new approach to platform to grounds signalling, relay protection and supervision

Publication Year: 1989, Page(s):1369 - 1378
Cited by:  Papers (5)  |  Patents (6)
| | PDF (1200 KB)

A method for platform-to-ground signaling, relay protection, and supervision of EHV (extremely high voltage) series capacitor banks is presented. The system comprises optical current transducers, optical fiber system, interface unit, and microprocessor-based protection supervision and control equipment located in the control room. The optical current transducer, located at high potential, does not... View full abstract»

• ### Mobile radio systems applications in electric/gas utilities. I. PSCC Radio Subcommittee working group report

Publication Year: 1989, Page(s):887 - 897
| | PDF (892 KB)

The Subcommittee conducted a survey of over 32 large Canadian and US electric/gas utilities in January 1988 to determine the status and value of existing mobile radio applications along with plans for future replacement or upgrade. The report is based on the results of the survey and includes a brief history of mobile radio telephone, the types and extent of mobile radio systems in use by electric... View full abstract»

• ### Ampacity studies on 49°C-rated transmission line

Publication Year: 1989, Page(s):1476 - 1485
Cited by:  Papers (5)  |  Patents (1)
| | PDF (1504 KB)

It is noted that transmission lines rated at 49°C have little thermal margin when operated in the summer. Results are given of an experimental study on four spans of an idle 115 kV three-phase transmission line. Under conditions of 33°C ambient, 2 to 4 km/hr effective wind speed, high solar input and 260 A load current, the 477 kcmil conductor temperature reached 47°C. The ampacity mod... View full abstract»

• ### Development of water pipe cooling system for power cables in tunnels

Publication Year: 1989, Page(s):863 - 872
Cited by:  Papers (1)
| | PDF (792 KB)

A full-size test line was constructed to study the water pipe cooling system for a bulk-power transmission line installed in a tunnel. Based on the test data and their analysis, a technique for designing the system has been established. The results have indicated an effective layout of the cooling pipes in the tunnel, and have validated the accuracy of the computer models to determine thermal char... View full abstract»

• ### Analysis of DC harmonics using the three-pulse model for the Intermountain Power Project HVDC transmission

Publication Year: 1989, Page(s):1195 - 1204
Cited by:  Papers (7)  |  Patents (1)
| | PDF (772 KB)

The authors compare the classical' converter modeling technique described by E.W. Kimbark (1971) and the recently proposed three-pulse model described by N.L. Shore et al. (1988). The comparison is made for the Intermountain Power Project (IPP) HVDC (high-voltage direct current) transmission. Comparisons with field measurements show that both the disturbance level and the spectrum of the harmonic... View full abstract»

• ### Studies on structural integrity for separate-cooling/sheet-winding gas-insulated transformer

Publication Year: 1989, Page(s):1079 - 1086
Cited by:  Papers (2)
| | PDF (624 KB)

Research leading to the development of a separate-cooling sheet-winding gas-insulated transformer is described. Basic models and full-scale models were used to conduct tests on the structural strength of the transformer, and the structural integrity of a 300 MVA transformer was investigated. The sheet winding is shown to have excellent characteristics with respect to the electromagnetic forces occ... View full abstract»

• ### Line parameters and transients of a non-parallel conductors systems

Publication Year: 1989, Page(s):1117 - 1126
Cited by:  Papers (7)
| | PDF (804 KB)

The authors derive impedance and admittance formulas for a system of nonparallel conductors together with an approximate method of evaluating impedance and admittance using an existing parallel-conductor formula. Transients on the nonparallel-conductor system are calculated using the impedance and admittance. It is found that the conventional analysis method for investigating electrostatic and mag... View full abstract»

• ### Telephone interference criteria for HVDC transmission lines

Publication Year: 1989, Page(s):1408 - 1421
Cited by:  Papers (7)
| | PDF (1012 KB)

The coupling between a transmission line and telephone cables is calculated on a general basis. Based on field measurements of the current harmonic spectrum from a modern 12-pulse HVDC (high-voltage direct current) converter, the ratio between disturbance current and resulting noise level in a telephone system is established. Disturbance current limitation criteria are identified based on tolerabl... View full abstract»

• ### Addendum I to bibliography of gas-insulated substations

Publication Year: 1989, Page(s):1003 - 1020
Cited by:  Papers (2)
| | PDF (1240 KB)

A 343 item addendum is provided to the bibliography that was published in 1982 (see ibid., vol.PAS-101, no.11, (1982)). It is divided into three main sections, dielectric characteristics, substation equipment, and general points. A list of authors is also included View full abstract»

• ### Performance of a long-time unattended station for measuring DC fields and air ions from an operating HVDC line

Publication Year: 1989, Page(s):1318 - 1328
Cited by:  Papers (1)
| | PDF (1388 KB)

The authors describe the experience of the Bonneville Power Administration in building and operating a long-term, unattended station to measure electric fields and air ions from the Pacific NW/SW HVDC (northwest/southwest high-voltage direct current) Intertie. The major emphasis is on the performance of the unipolar ion counters, as these have been the most difficult type of instrument to incorpor... View full abstract»

• ### Inadvertant energizing protection of synchronous generators

Publication Year: 1989, Page(s):965 - 977
Cited by:  Papers (4)
| | PDF (1096 KB)

The report considers the problem of inadvertent generator energization, the hazard to the generator and turbine, and the major dedicated protection schemes used within the industry to detect this condition. It is concluded that inadvertent energizing of large synchronous generators has significantly increased within the industry as generating stations have become more complex. The major protection... View full abstract»

• ### The implications of the electrogeometric model regarding effect of height of structure on the median amplitude of collected lightning strokes

Publication Year: 1989, Page(s):1450 - 1460
Cited by:  Papers (51)
| | PDF (880 KB)

M. Sargent (1972) concluded that the median current of the lightning strokes collected by a structure increases when the height of the structure is increased. In the present work, it is shown that Sargent's conclusion is applicable only to the case of equal striking distances, and that Sargent's use of too low a median current to flat ground has inadvertently exaggerated the effect of height on me... View full abstract»

• ### The simulation of surge corona on transmission lines

Publication Year: 1989, Page(s):1360 - 1368
Cited by:  Papers (12)
| | PDF (608 KB)

The prediction of surge attenuation and distortion by corona on overhead lines is relevant to both insulation design and overvoltage protection. The authors describe a computational procedure to obtain the corona capacitance from the line geometry, thus avoiding the need to impulse-test full-scale line models. The simulation of surge corona loss by a switched capacitor with constant and voltage-de... View full abstract»

## Aims & Scope

Installation and operation of apparatus, equipment, structures, materials and systems for the safe, reliable and economic generation, transmission, distribution, conversion, measurement and control of electric energy.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Wilsun Xu
Ph.D., P.Eng.
Dept. Electrical and Computer Eng.
University of Alberta
(9107 - 116 Street)