Proceedings ArticleDOI
Attenuating voltage surges in power cable by modifying the semiconductive shields
Steven A. Boggs,J.M. Braun,G.C. Stone +2 more
- pp 491-494
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TLDR
In this article, the authors proposed an optimized surge attenuating cable (SAC) for surge protection of inductive devices and to distribution system cabling, which can protect rotating machines and transformers from damage induced by short risetime transients generated by switching devices and lightning.Abstract:
A novel functionality can be added to solid dielectric power cable by optimizing semiconductor shield properties for attenuation of high frequencies propagating down the cable. A cable optimized for high frequency attenuation can protect inductive devices, such as rotating machines and transformers, from damage induced by short risetime transients generated by switching devices and lightning. The use of an optimized surge attenuating cable (SAC) for this purpose effects protection in a manner which is economic and has no negative implications for system reliability. SAC concepts and attenuation characteristics are discussed. SAC applications to surge protection of inductive devices and to distribution system cabling are considered. >read more
Citations
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Journal ArticleDOI
Inverter-fed drives: which motor stators are at risk?
TL;DR: In this article, the authors describe measurements of the surge voltage characteristics from a number of motors driven by inverter-fed drives (IFDs) and give guidelines for determining which motors may be at risk of failure from voltage surges.
Journal ArticleDOI
Partial discharge. XXII. High frequency attenuation in shielded solid dielectric power cable and implications thereof for PD location
TL;DR: The accuracy with which a PD source can be located is limited by high frequency attenuation of PD pulses as they propagate through the cable as mentioned in this paper, which is an essential part of factory testing of shielded solid dielectric power cable.
Journal ArticleDOI
Partial discharge. XVIII. Errors in the location of partial discharges in high voltage solid dielectric cables
TL;DR: Errors in partial discharge location on high voltage dielectric cables caused by both mechanical and electrical phenomena are discussed in this article, where experiments to determine typical PD location error were carried out using a detector with a 10 MHz bandwidth.
Journal ArticleDOI
High frequency properties of shielded power cable - part 1: overview of mechanisms
TL;DR: In this article, the authors provide an overview of the mechanisms of high frequency (HF) loss in shielded power cables and discuss the challenges in the measurements of cable material properties at HF.
High frequency characteristics of medium voltage XLPE power cables
TL;DR: In this paper, the response of a cable can be used to analyze the variation of the material characteristics along its length, which is necessary for diagnosis of possible ageing, it is necessary to know how cable design, material p...
References
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Journal ArticleDOI
Fundamental Limitations in the Measurement of Corona and Partial Discharge
Steven A. Boggs,G. C. Stone +1 more
TL;DR: In this article, the theoretical sensitivity of conventional partial discharge detectors is compared with that obtained from ultra wideband (UWB) (up to l GHz) detection systems, and the comparison indicates that for relatively lossfree distributed systems, such as SF6 insulated bus, the UWB system is up to two orders of magnitude more sensitive.
Proceedings ArticleDOI
Propagation of partial discharge pulses in shielded power cable
G. C. Stone,Steven A. Boggs +1 more
TL;DR: The design of concentric-neutral plastic-insulated power cables has been optimized for the transmission and distribution of large quantities of 60-Ηz power at high voltages as mentioned in this paper.
Journal ArticleDOI
Turn Insulation Capability of Large AC Motors Part 1 - Surge Monitoring
TL;DR: In this article, the results of monitoring switching surges for 26 motors controlled by air magnetic circuit breakers and 7 motors controlled with vacuum switchgear in 11 utilities are presented, showing that no significant surges were ever detected during circuit breaker opening operations, but significant surges with magnitude as high as 4.6 pu were measured during normal motor starting operations.
Patent
Surge attenuating cable
TL;DR: In this paper, a cable insulation system consisting of one or more coaxial layers of semiconductive material is designed to maximize high frequency losses thereby to facilitate attenuation of high voltage surges caused by lightning or by switching.
Journal ArticleDOI
Effects of voltage impulses on extruded dielectric cable life
TL;DR: In this article, the effects of lightning and thumping impulses on the performance of various 15 kV cable designs were investigated in the laboratory using an accelerated water treeing test, and the results showed that lightning or thumping impulse do not affect cable AC or impulse breakdown strength and there is no visual difference between wafers taken from impulsed and control samples.