# IEEE Transactions on Power Delivery

## Filter Results

Displaying Results 1 - 25 of 64
• ### Bibliography of relay literature, 1986-7: IEEE Committee Report

Publication Year: 1989, Page(s):1649 - 1658
| |PDF (927 KB)

The latest of a series of classified lists of power-system relay references, begun in 1927, is presented. The papers listed include references to the subjects of service restoration, testing, and methods of calculation, as well as to the field of relaying. Only the more readily available foreign publications are included.<> View full abstract»

• ### Bibliography for reliability and availability engineering for substations

Publication Year: 1989, Page(s):1689 - 1694
Cited by:  Papers (3)
| |PDF (376 KB)

A bibliography of selected references pertaining to the reliability and availability of substations is presented. Emphasis was placed on technical references relating to substations that step down from a primary voltage to a secondary distribution system voltage of 46 kV or below.<> View full abstract»

• ### Summary of the special publication Application of fault and disturbance recording devices for protective system analysis'

Publication Year: 1989, Page(s):1625 - 1630
Cited by:  Papers (4)
| |PDF (456 KB)

The special publication Application of fault and disturbance recording devices for protective system analysis' was printed and made available in the summer of 1987. Identified as IEEE publication No.87THo195-8-PWR, this report is intended to supplement previous papers to provide additional guidance in justifying, utilizing and specifying fault recording equipment for the electric power system. Al... View full abstract»

• ### Digital station protection

Publication Year: 1989, Page(s):1617 - 1624
| |PDF (588 KB)

A homogeneous and uniform protective system for all protected units in a substation, which uses the processing capabilites of modern microprocessors, is presented. The basic idea is to split protective tasks into processing and data communication. The processing units are located at each boundary of the protection zones, each of which always comprises phasor representation for currents and voltage... View full abstract»

• ### Rockport transient voltage monitoring system: analysis and simulation of record waveforms

Publication Year: 1989, Page(s):1794 - 1805
Cited by:  Papers (11)
| |PDF (604 KB)

A transient voltage monitoring system has continuously monitored the terminal voltage of the EHV transformers at American Electric Power's Rockport 765 kV Station since last September 1986. A summary is presented of the transients recorded by that system through July of 1988, along with representative waveforms of some of the more significant events. A general description of each type of transient... View full abstract»

• ### A new method for the calculation of subtransmission and distribution system transients based on the FFT

Publication Year: 1989, Page(s):1869 - 1875
Cited by:  Papers (16)
| |PDF (548 KB)

A method is presented for the calculation of bus voltage transients in an electric power system. The method is specifically intended for application to distribution and subtransmission networks during the application of large industrial loads. In this sense, the calculation is a power quality assessment. In particular, the case of load currents that are electronically switched may be analyzed. The... View full abstract»

• ### Analysis of simultaneous ground and phase faults on a six phase power system

Publication Year: 1989, Page(s):1610 - 1616
Cited by:  Papers (4)
| |PDF (424 KB)

An analysis is presented of any simultaneous sustained ground and phase fault. A single algebraic equation is presented for the calculation of sequence currents following a sustained simultaneous ground and phase fault at the terminals of a six-phase generator. The equation can be simulated on a digital computer or a network analyzer for the simulation of any type of fault. The connection of seque... View full abstract»

• ### Five-legged core transformer equivalent circuit

Publication Year: 1989, Page(s):1786 - 1793
Cited by:  Papers (18)
| |PDF (648 KB)

Cable-fed five-legged core grounded-wye-to-grounded-wye transformers can cause excessively high voltages in a power system. A typical per-phase equivalent does not adequately represent a five-legged core transformer for the steady-state or transient analyses required in investigating overvoltages. A three-phase equivalent circuit is developed. Comparison of the result for the equivalent circuit an... View full abstract»

• ### Interactions between two dividers used in simultaneous comparison measurements [of power system impulses]

Publication Year: 1989, Page(s):1586 - 1594
Cited by:  Papers (2)
| |PDF (712 KB)

A revised international standard for the measurement of lightning and front-chopped lightning impulses is presently under consideration. This standard states that the accuracy of these measuring systems is to be determined by comparison to reference systems maintained by appropriate national laboratories. Investigations have been made of the interactions between two systems configured for simultan... View full abstract»

• ### A new algorithm for service restoration in distribution systems

Publication Year: 1989, Page(s):1832 - 1839
Cited by:  Papers (96)  |  Patents (2)
| |PDF (772 KB)

An algorithm is proposed to restore the deenergized loads in a distribution system quickly by using sectionalizing switches. The computational burden and the accuracy of the algorithm is improved by using the dual effective gradient method. Test results on a practical system are given to demonstrate that the algorithm can be used in actual, large-scale urban distribution system applications View full abstract»

• ### Magnetic fields remote from substations

Publication Year: 1989, Page(s):1862 - 1868
Cited by:  Papers (14)
| |PDF (640 KB)

Results are presented of a project to confirm predictions of magnetic fields remote from a transmission to distribution substation. The measurement data span the period from June 1984 to July 1988. Measurements of magnetic field profiles around a specific substation were made prior to construction (1984), after the substation was in service and loaded to 80% capacity (1987), and one year later (19... View full abstract»

• ### An expert system for load allocation in distribution expansion planning

Publication Year: 1989, Page(s):1910 - 1918
Cited by:  Papers (24)
| |PDF (660 KB)

The design of a rule-based expert system for load allocation in the expansion planning of a distribution system is reported. The heuristic rules followed by distribution planners are incorporated into the knowledge base using the artificial language PROLOG. Algorithms aimed at minimizing power loss, minimizing investment cost, and computing service reliability, respectively, are developed to suppo... View full abstract»

• ### A digital relaying algorithm for detecting transformer winding faults

Publication Year: 1989, Page(s):1638 - 1648
Cited by:  Papers (47)
| |PDF (772 KB)

A digital algorithm for detecting faults in single-phase and three-phase power transformers is proposed. The algorithm is suitable regardless of whether it is possible to measure winding currents. The algorithm does not require B-H curve data. A variety of operating conditions simulated on a computer were used to test the algorithm. The results show that it performs well View full abstract»

• ### An adaptive sampling-interval generator for digital relaying

Publication Year: 1989, Page(s):1602 - 1609
Cited by:  Papers (57)  |  Patents (12)
| |PDF (432 KB)

A method for measuring frequency at a fixed sampling rate is described, and a variable-rate method is introduced. An algorithm based on a digital Fourier transform, which locks the sampling frequency in a microprocessor-based system to the fundamental of an incoming voltage waveform, is devised. The algorithm also intrinsically provides a measurement of the frequency. The algorithm is applied to t... View full abstract»

• ### Committee report-recommended practice on specific aspects of cable installation in power-generating stations

Publication Year: 1989, Page(s):1504 - 1506
Cited by:  Papers (2)
| |PDF (260 KB)

Task Force 14-1 was formed within the Insulated Conductors Committee (ICC) to investigate the appropriateness of the guidance presented in IEEE standards addressing design and installation of cable systems in power stations, in light of recent testing by installation contractors and cable manufacturers, as well as comments by various members. A survey questionnaire was circulated to all of the ICC... View full abstract»

• ### Seismic behaviour of toughened glass station post insulators for 800 kV networks

Publication Year: 1989, Page(s):1701 - 1707
Cited by:  Papers (3)
| |PDF (412 KB)

The results of tests on 800 kV toughened glass post insulators are presented and analytical study to define their dynamic behavior when associated with connections and a supporting chassis under extreme service conditions (earthquake, short-circuit) is described. The findings show that the performance of toughened glass post insulators under high-amplitude dynamic loads permits even the most strin... View full abstract»

• ### Determination of the magnetizing characteristic of three-phase transformers in field tests

Publication Year: 1989, Page(s):1779 - 1785
Cited by:  Papers (20)
| |PDF (624 KB)

A method to determine the magnetizing characteristic of three-phase transformers is described. In the analysis, the measured currents and voltages generated during transformer switching are used. The magnetizing characteristic is calculated from the primary currents, rather than the current through the delta winding View full abstract»

• ### The potential use of optical sensors for the measurement of electric field distribution

Publication Year: 1989, Page(s):1579 - 1585
Cited by:  Papers (6)  |  Patents (2)
| |PDF (656 KB)

An optical sensor using the Pockels effect can be a useful measurement tool in electrical applications where mapping distributed E-fields is required. Results from electric field tests with a 2 m sphere, and the voltage distribution of a 1100 kV cascaded test transformer are presented to demonstrate its utilisation. These results show that the optical sensor, due to its inherent dielectri... View full abstract»

• ### Response of planar and cylindrical ion counters to a corona ion source

Publication Year: 1989, Page(s):1823 - 1831
Cited by:  Papers (6)
| |PDF (656 KB)

Because of the environmental and economic applications of small air ions near HVDC power lines, it is desirable to have accurate and reliable ion counters. A parallel-screen small air ion source using corona discharge was constructed for evaluating two aspiration ion counters in the range 5000 to 1,000,000 cm with positive and negative ions. A planar electrode ion counter and a cylindrical electro... View full abstract»

• ### An investigation of power line de-icing by electro-impulse methods

Publication Year: 1989, Page(s):1855 - 1861
Cited by:  Papers (14)  |  Patents (5)
| |PDF (1116 KB)

A brief description is given of the theory and history of EIDI (electroimpulse deicing) technology. These descriptions are followed by a summary of the experiments conducted by the authors to investigate the feasibility of deicing electric power lines using EIDI technology. In spite of the features of EIDI technology that make it attractive for power line deicing, the authors were unable to deice ... View full abstract»

• ### The HEMP response of an overhead power distribution line

Publication Year: 1989, Page(s):1937 - 1944
Cited by:  Papers (2)  |  Patents (1)
| |PDF (700 KB)

Estimates of the transient voltage surges induced by a high-altitude nuclear detonation across a transformer in a single-phase distribution line are provided. A multiconductor line coupling model is used, along with a high-altitude electromagnetic pulse (HEMP) environment. Both the open-circuit voltage across the transformer and the loaded voltage are considered. To obtain reasonable data for the ... View full abstract»

• ### A sensitivity approach to the sizing of insulated power cables in low and medium voltage electrical power distribution systems

Publication Year: 1989, Page(s):1521 - 1528
Cited by:  Papers (1)
| |PDF (548 KB)

The author develops cable-sizing criteria using sensitivity techniques. High-sensitivity parameters that influence cable size can be determined in each voltage class and design criteria formulated, to apply to both AC and DC systems. Copper and aluminium conductors with thermosetting (ethylene-propylene rubber or cross-linked polyethylene) or thermoplastic insulation are compared for use in the ab... View full abstract»

• ### Mechanism and effect of DC charge accumulation on SF6 gas insulated spacers

Publication Year: 1989, Page(s):1765 - 1772
Cited by:  Papers (55)
| |PDF (616 KB)

Mechanism and effect of DC charge accumulation on the surface of a solid insulating support (spacer) have been studied in compressed SF6 gas using various cylindrical model spacers. The distribution of surface charged is closely related to the normal component (gas side) En of electric field on the spacer surface. The ,maximum charge density can be estimated from the... View full abstract»

• ### A new fault location algorithm for radial transmission lines with loads

Publication Year: 1989, Page(s):1676 - 1682
Cited by:  Papers (70)  |  Patents (3)
| |PDF (516 KB)

Conventional fault location schemes do not take loads and their variable impedance behavior into account. This leads to unacceptable errors in the case of radial transmission lines with loads, commonly found at the 120 kV and lower levels. A novel method for such lines is proposed. The fault distance is obtained by solving an implicit equation. Single-phase-to-ground, phase-to-phase, and three-pha... View full abstract»

• ### Significant parameters in estimating the striking distance of lightning strokes to overhead lines

Publication Year: 1989, Page(s):1970 - 1981
Cited by:  Papers (29)
| |PDF (892 KB)

The knowledge of the striking distance of a lightning stroke is essential in assessing the lightning performance of an overhead power line. The authors examine the effects of various line and lightning parameters on the striking distance and identify the significant ones. These significant parameters are studied to predict the striking distance accurately 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)
Edmonton, Alberta T6G 2V4 Canada
wxu@ualberta.ca
Phone:780-492-5965
Fax:780-492-1811