Pregled bibliografske jedinice broj: 305045
Approach to the Design of HV Test Laboratory Earthing
Approach to the Design of HV Test Laboratory Earthing // Proceedings 15th International Symposium on High Voltage Engineering / Babuder, Maks (ur.).
Ljubljana: Elektroinštitut Milan Vidmar, 2007. str. T2-702 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 305045 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Approach to the Design of HV Test Laboratory Earthing
Autori
Uglešić, Ivo ; Krepela, Miroslav ; Milardić, Viktor
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings 15th International Symposium on High Voltage Engineering
/ Babuder, Maks - Ljubljana : Elektroinštitut Milan Vidmar, 2007, T2-702
ISBN
978-961-6688-00-0
Skup
15th International Symposium on High Voltage Engineering
Mjesto i datum
Ljubljana, Slovenija, 27.08.2007. - 31.08.2007
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Earthing
(Earthing; Screening; HV Test Laboratory; Modelling)
Sažetak
The paper deals with solving demands on earthing of an industrial test laboratory for testing power transformers rated voltage up to 550 kV. A review of test laboratory earthing and screening, satisfying all requirements conditioned by test procedures, building lightning protection, personnel protection, system earthing, and electromagnetic compatibility is presented. Modern high voltage test facilities are equipped, apart from primary test devices, also with numerical measuring instruments. High voltage impulse tests, especially with chopped on tail waves, may generate steep transients. As a consequence, high potential differences along a transient return current path and consequential flashovers between earth potential points may occur. Improper earthing and bonding may result, apart from mentioned flashovers, in severe induced voltages in secondary cables with consequential influence on test results, possible destruction of instruments and hazardous voltages for personnel. Transient potential differences are analyzed by accurate impulse test circuit software modelling. Magnitude of transient potential difference between particular points is proportional to the earth electrode inductance. Transient potential differences on the earth electrode due to lightning stroke are analyzed by lightning protection system software modelling, with solving the problem of probable flashover between building metal structure and Faraday cage, that may even result in fire.
Izvorni jezik
Engleski
Znanstvena područja
Elektrotehnika
POVEZANOST RADA
Projekti:
036-0361590-1578 - Udovoljavanje zahtjeva zaštite okoliša u visokonaponskom sustavu (Uglešić, Ivo, MZO ) ( CroRIS)
Ustanove:
Fakultet elektrotehnike i računarstva, Zagreb
