uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Transient control in low-voltage power installation networks and electronic systems
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Technology, Department of High Voltage Research.
1997 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Transient protection in a low-voltage power installation network and an electronic system isof vital importance since most of the activities of our society are very dependent on thereliability of low-voltage power installation networks and electronic systems. This thesisconcentrates upon several investigations which all deal with the evaluation and improvementof the protection measures of low-voltage power installation networks and electronic systemsagainst electrical transients.

Different components of transient protection circuits, such as varistors, gas dischargeprotectors and shielded cables, and their co-ordination in complex protection circuits havebeen experimentally investigated. The transient response of an individual protectioncomponent together with a complex protection system is discussed. Using a direct "high-level" current injection, a shielded system including non-linear circuit components wasevaluated experimentally. Based on the theoretical analysis, self-consistent time domainmodels of the varistor, the gas discharge protector, the power installation cable and theshielded cable were developed and implemented under the Alternative Transients Program -Electromagnetic Transients Program (ATP-EMTP). A good agreement was obtained incomparing the measured and the calculated results even for a complex protection circuit. Themodels developed in this thesis are shown to be a very efficient tool in the evaluation ofprotective measures in low-voltage power installation networks and in electronic systems.Different protection schemes for a protection circuit are also discussed in this thesis.

A mid-plane triggered spark gap trigatron was also theoretically and experimentallyinvestigated. On the basis of these investigations, an optimised trigatron spark gap wasdeveloped and used in the construction of a new low impedance impulse current generatorwhich was used in the experiments described in this thesis.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis , 1997. , 59 p.
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 297
Keyword [en]
Physics, Transient protection, varistor, gas discharge protector, shielded cable, low-voltage power installation, ATP-EMTP, spark gap, current generator
Keyword [sv]
National Category
Physical Sciences
Research subject
Electricity, Esp The Study Of Transients and Discharges
URN: urn:nbn:se:uu:diva-113ISBN: 91-554-4006-1OAI: oai:DiVA.org:uu-113DiVA: diva2:160677
Public defence
1997-09-24, lecture hall at the Institute of High Voltage Research, Uppsala University, Uppsala, 10:15
Available from: 1997-09-03 Created: 1997-09-03Bibliographically approved

Open Access in DiVA

No full text
Buy this publication >>

By organisation
Department of High Voltage Research
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 474 hits
ReferencesLink to record
Permanent link

Direct link