Fast Fault detection for peak current limitation based on few samples
2003 (English)In: CIRED: 17th International Conference on Electricity Distribution, 2003Conference paper (Refereed)
This paper begins with a motivation why “fast fault detection” is an important topic. Two particular apparatus for which their operation requires “fast fault detection” are briefly described. An algorithm using instantenous sampled current values to detect faults is described and evaluated by computer simulations with the aid of EMTDC – a computer program for performing dynamic calculations/simulations of power systems It is demonstrated that a three-phase fault can be detected within approximately 1 ms after fault inception. Power system transients such as capacitor energization and transformer energization could cause unintentional fault detection of the algorithm, but it is shown that a capacitor energization can be discriminated from a fault by lowpass filtering the current before it is sampled. Furthermore it is shown that transformer energization can be discriminated from a fault by using the current differential between two samples as a conditional requirement.
Place, publisher, year, edition, pages
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-52780OAI: oai:DiVA.org:kth-52780DiVA: diva2:467654
CIRED, 17th International Conference on Electricity Distribution. Barcelona, 12-15 May 2003
QC 20111222 NR 201408042011-12-192011-12-192012-01-12Bibliographically approved