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# IEEE Transactions on Power Delivery

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Displaying Results 1 - 25 of 77
• ### Bibliography of switchgear literature: IEEE committee report

Publication Year: 1990, Page(s):177 - 188
| | PDF (912 KB)

This bibliography of 255 references was prepared by the Recognition and Planning Subcommittee of the IEEE Power Engineering Society Switchgear Committee to be used as a reference for switchgear education. The references generally cover the period of mid-1983 through mid-1988. The last complete switchgear bibliography was published in 1984 covering the period through September of 1983. This referen... View full abstract»

• ### Results from AC transmission line audible noise studies at the Anneberg EHV test station

Publication Year: 1990, Page(s):317 - 323
Cited by:  Papers (2)
| | PDF (612 KB)

Results from single-phase test line audible noise measurements on various conductor configurations for transmission lines in the 400 kV range are presented. The predicted L50 audible noise levels are given as functions of the rain rate. After single-phase to three-phase conversion, a comparison is made with results from long-term measurements on an operating 400 kV line. It is shown that the long-... View full abstract»

• ### Application of a microcomputer-based database management system to distribution system reliability evaluation

Publication Year: 1990, Page(s):343 - 350
Cited by:  Papers (12)
| | PDF (604 KB)

The experience of using a database management system (DBMS) to handle the large amounts of data involved in distribution system reliability evaluation is reported. To demonstrate the capability of the DBMS in data manipulation, reliability evaluation of a distribution system in Taiwan is performed using a DBMS installed on an IBM PC/AT. It is found that using the DBMS tool is a very efficient way ... View full abstract»

• ### A practical approach for estimating future outage costs in power distribution networks

Publication Year: 1990, Page(s):311 - 316
Cited by:  Papers (12)
| | PDF (468 KB)

Quantitative reliability analysis is integrated as a part of a distribution network information and design system. The outage rates, outage durations and costs of outages are evaluated using the data included in the network database together with the reliability data for network components and the per unit values for the energy not supplied. Using the reliability calculation program together with ... View full abstract»

• ### Small ion mobility characteristics under the Shiobara HVDC test line

Publication Year: 1990, Page(s):247 - 253
Cited by:  Papers (7)
| | PDF (504 KB)

A summary is presented of the experimental results of small ion mobility characteristics under the Shiobara HVDC (high-voltage direct-current) test line. An aspirator-type ion counter was developed to measure ion densities and ion mobilities simultaneously under a HVDC line where both electric field and ions exist together. Thereafter, ion mobility spectra and mean ion mobilities for positive and ... View full abstract»

• ### A novel electromagnetic field shaper for pipe-type cable systems

Publication Year: 1990, Page(s):1 - 7
Cited by:  Papers (2)
| | PDF (724 KB)

A novel electromagnetic field shaper designed to reduce the electrical losses and increase the current carrying capacity of pipe-type cable systems was conceived in 1983. The salient feature of this field is that, in addition to significantly reducing the eddy current losses in the pipe or cable enclosure, it also reduces the losses in the cables due to their proximity to the metallic enclosure. T... View full abstract»

• ### 138 kV shunt capacitor research bank-design and experience

Publication Year: 1990, Page(s):337 - 342
Cited by:  Papers (3)
| | PDF (684 KB)

A substation capacitor bank incorporating a number of innovations was installed at the Poston Station (Columbus Southern Power Company) and commissioned July 1988. A description is given of the installation, including a discussion of the various innovations, comments on the operating experience through mid-January 1989, and observations from a staged fault test on November 10, 1988 View full abstract»

• ### A knowledge base system for power cable design

Publication Year: 1990, Page(s):449 - 455
Cited by:  Papers (5)
| | PDF (532 KB)

A summary is presented of the principal results and findings of a recently completed project on the use of expert systems in power cable design, and the main features of the developed expert system are described. The objective of the project is to investigate the use of expert systems technology in the power cable design applications and to demonstrate the associated knowledge base structure and o... View full abstract»

• ### Modelling of power lines in lightning incidence calculations

Publication Year: 1990, Page(s):303 - 310
Cited by:  Papers (26)
| | PDF (576 KB)

When applying the electrogeometric model to power lines to determine the frequency and characteristics of the collected lightning strokes, the power line has traditionally been represented by a set of horizontal wires, i.e. both the sag of the wires and the existence of the towers have been ignored. This approach has serious shortcomings. The authors eliminate these problems by presenting a comput... View full abstract»

• ### An investigation of distribution costs by means of regression analysis

Publication Year: 1990, Page(s):521 - 526
Cited by:  Papers (1)
| | PDF (408 KB)

The scale economy of electricity distribution depends to a great extent on how the output is defined. If the output is defined as the (variable) amount of electricity (in terms of kilowatt hours/year) supplied, assuming the supply area and the number of customers to be constant, an increasing return to scale is found, i.e. marginal costs are lower than average costs. If pricing questions are discu... View full abstract»

• ### Transfer switch ratings without fuses or circuit breakers'

Publication Year: 1990, Page(s):202 - 203
Cited by:  Papers (1)
| | PDF (168 KB)

The problem of insufficient data for the specification of transfer switches is identified as a problem with regard to available fault current. Typical examples are given to explain the necessity of obtaining additional data, beyond what is traditionally published, in order to specify automatic transfer switch applications safely. A suggestion for a more realistic nomenclature is made View full abstract»

• ### Measurement and characterization of harmonic and high frequency distortion for a large industrial load

Publication Year: 1990, Page(s):427 - 434
Cited by:  Papers (29)
| | PDF (572 KB)

A software package is described that was developed to perform harmonic analysis on digitized current and voltage waveforms. The authors also report on the measurement and characterization of voltage and current harmonics and high-frequency distortion of a large industrial load. Since waveform distortions often include periodic high-frequency transients, special signal processing techniques were de... View full abstract»

• ### Implementation of heuristic search strategies for distribution feeder reconfiguration

Publication Year: 1990, Page(s):239 - 246
Cited by:  Papers (166)  |  Patents (5)
| | PDF (812 KB)

A method for feeder reconfiguration with the potential for handling realistic operating constraints is presented. The approach taken is to set up a decision tree to represent the various switching operations available. A best-first tree searching strategy, based on heuristics, is used to evaluate the various alternatives. Switching options which could result in overloads, voltage problems, or othe... View full abstract»

• ### Analysis of a harmonic overvoltage due to transformer saturation following load shedding on Hydro-Quebec-NYPA 765 kV interconnection

Publication Year: 1990, Page(s):397 - 405
Cited by:  Papers (10)
| | PDF (728 KB)

An analysis is presented of the harmonic overvoltage recorded on the interconnection between Hydro-Quebec and the New York Power Authority (NYPA) in the Chateauguay area. The overvoltage was caused by transformer saturation, following tripping of the 765 kV transmission line linking both systems. EMTP (electromagnetic transient program) simulation yielded good agreement with field measurements and... View full abstract»

• ### Advantages and disadvantages of embedment to prevent external mechanical damages to submarine cables

Publication Year: 1990, Page(s):54 - 57
Cited by:  Papers (1)
| | PDF (372 KB)

The CIGRE paper Methods to Prevent Mechanical Damage to Submarine Cables' (1986) deals with failures in submarine cable links. However, it does not deal with power transmission availability. Furthermore, it may give the impression that total embedment is recommended. The authors argue that this is much too expensive and might endanger the economic viability of a cable solution. A definition of po... View full abstract»

• ### Simulation of HVDC system disturbances with reference to the magnetizing history of the convertor transformers

Publication Year: 1990, Page(s):330 - 336
Cited by:  Papers (2)
| | PDF (560 KB)

Following HVDC (high-voltage direct-current) system disturbances, the converter transformers may be subjected to overexcitation, DC magnetization, and in-rush effects, all of which must be accurately represented in dynamic simulation studies. A description is given of practical ways of modeling the magnetic history of the converter transformer. The authors use them to assess the relative importanc... View full abstract»

• ### An improved 60 Hz wood pole model

Publication Year: 1990, Page(s):442 - 448
Cited by:  Papers (5)
| | PDF (532 KB)

A field and laboratory-verified, 60 Hz ladder network was developed to describe wood pole electrical behavior. The influences of moisture content gradients, treatment type and penetration, species, dimensions, and rain are included in the model. An illustrative example showing predictions of pole current and body current in a man touching a pentachlorophenol and CCA treated pole at ground level is... View full abstract»

• ### Protecting firemen against fire-induced flashovers

Publication Year: 1990, Page(s):297 - 302
Cited by:  Papers (4)
| | PDF (440 KB)

This study was initiated in response to an accident in which a man was injured because of the step potential generated by a fire-related flashover of a 500 kV line. A safety guide for firemen is presented, describing the conditions under which flashovers are not likely to occur and the extent of the hazardous step potential zone, which should be avoided in cases where flashovers are likely to occu... View full abstract»

• ### Totally automated switching operation in distribution system

Publication Year: 1990, Page(s):514 - 520
Cited by:  Papers (9)
| | PDF (780 KB)

Several algorithms and methods that tend to be overlooked but are important for the realization of an automatic and systematic switching operation in a distribution system are proposed. To explain the importance of these algorithms and methods, the concept of an operating state is introduced and the correlation of different purpose switching operations is illustrated. Each proposed algorithm or me... View full abstract»

• ### An SF6 autoexpansion breaker: the correlation between magnetic arc control and critical current

Publication Year: 1990, Page(s):196 - 201
Cited by:  Papers (3)
| | PDF (512 KB)

It is possible to design SF6 autoexpansion breakers which are free from critical currents. In these devices, which combine arc rotation in a magnetic field and thermal expansion of gas, critical currents can effectively occur if these effects are incorrectly created and combined. An analytic and experimental method optimizing the current at which rotation should start is presented. The ... View full abstract»

• ### The 4×6 network: distribution system applications

Publication Year: 1990, Page(s):284 - 289
| | PDF (400 KB)

The authors previously described the 4×6 network switching scheme for power delivery systems with emphasis on substations. It was shown that the 4×6 scheme requires up to 40% fewer breakers than traditional switching schemes and is inherently more reliable. The emphasis in this study is on distribution system applications. It is shown that transformer nameplate capacity can be reduced ... View full abstract»

• ### Long term experience with semiconductive glaze high voltage post insulators

Publication Year: 1990, Page(s):502 - 508
Cited by:  Papers (7)
| | PDF (532 KB)

Insulators using semiconductive glaze have long been known for their superior contamination performance. Early glazes for this type of insulator, however, were not stable, and successful use of semiconductive glazed porcelain insulators was delayed many years until tin-antimony oxide glazes were developed. Service experience of 18 years is now available for line and station post insulators with th... View full abstract»

• ### A time-domain approach for distribution and transmission network modeling

Publication Year: 1990, Page(s):365 - 371
Cited by:  Papers (10)
| | PDF (404 KB)

A state variable approach based on a time-domain analysis is presented for identifying the parameters of a distribution or transmission network model using actual recorded data. The data used in the model development were simulated data and actual recorded data. The actual recorded data were obtained during normal operating and capacitor switching conditions in a primary distribution feeder. The m... View full abstract»

• ### Two dimensional modelling of three core cable transient temperature rise

Publication Year: 1990, Page(s):21 - 25
Cited by:  Papers (3)
| | PDF (412 KB)

A study of the transient temperature rise of a three-core cable is described. A literature search was unable to uncover any reference on this topic since a paper by F.O. Wollaston (Trans. AIEE, vol.68, pt.11, p.1284-97, 1949). Results from a computer program that models the two-dimensional heat flow are compared with those obtained using the normally applied one-dimensional model. The modeling tec... View full abstract»

• ### An expert system for online security-economic load allocation on distribution systems

Publication Year: 1990, Page(s):467 - 473
Cited by:  Papers (9)
| | PDF (668 KB)

A description is given of the development of a knowledge-based online consultant which assists power-system operators in a distribution SCADA (supervisory control and data acquisition) environment. In particular, the allocation of loads to outgoing feeders during the normal state is performed as a preventive measure for minimizing overloads of apparatus following a fault on a substation. By perfor... 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)