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Partial Discharges and Iec Standards 60840 and 62067: Simulation Support to Encourage Changes
M. Batalović i dr. Parcijalna pražnjenja i IEC standardi 60840 i 62067: Simulacijska podrška za poticanje promjena ISSN 1330-3651 (Print), ISSN 1848-6339 (Online) DOI: 10.17559/TV-20141118124625 PARTIAL DISCHARGES AND IEC STANDARDS 60840 AND 62067: SIMULATION SUPPORT TO ENCOURAGE CHANGES Mirza Batalović, Kemo Sokolija, Mesud Hadžialić, Nejra Batalović Preliminary notes This paper addresses some shortcomings of existing IEC standards related to analyses of cable systems with polymer insulation (IEC 60840 and IEC 62067). The focus is on partial discharges measurement, completely neglected in present version of these standards, and justification of the needs for their inclusion in the standards through appropriate procedures. If included in the standards the procedures would provide an effective way to identify and detect the defects that might appear during the cable system installation and to forestall their appearance during exploitation. The simulation evidences, to suggest and justify the changes in the standards, through a modelling of partial discharge phenomena using contemporary software tool (COMSOL) are provided in this paper. Keywords: COMSOL model; IEC standards; partial discharges Parcijalna pražnjenja i IEC standardi 60840 i 62067: Simulacijska podrška za poticanje promjena Prethodno priopćenje Ovaj rad upućuje na izvjesne nedostatke postojećih IEC standarda koji se odnose na analizu kabelskih sistema s polimernom izolacijom (IEC 60840 i IEC 62067). Fokus je na mjerenju parcijalnih pražnjenja, potpuno zanemarenih u aktualnoj verziji ovih standarda,te opravdanosti potreba za njihovo uključenje u standarde kroz odgovarajuće procedure. Ukoliko bi se uključile u standarde, procedure bi osigurale učinkovit alat za identifikaciju i detekciju defekata koji se mogu pojaviti za vrijeme instalacije kabelskih sistema i spriječiti njihovu pojavu tijekom eksploatacije. -
W Series Impulse Voltage Test System
W SERIES IMPULSE VOLTAGE TEST SYSTEM Impulse Voltage Test System is used to generate impulse APPLICATION voltages from 100 KV to 2400 KV simulating lightning strokes The basic system is used to test any high voltage and switching surges with energies up to 240 KJ. equipment like The KVTEK make impulse voltage test systems are modular in ØPower Transformers construction, flexible and cover testing applications according to IEC, ANSI/IEEE and other national standards. ØDistribution Transformers The basic system can be upgraded in various ways to allow ØCable (Type Tests) optimizing the impulse test system for tests on different high ØSurge Arresters (impulse current tests) voltage equipments. ØMotor / Generators The system operation is user friendly and incorporates all the ØInsulators necessary features of Impulse Voltage Test. ØBushings ØGIS ØInstrument Transformers ØResearch & Development and Universities FEATURES ØLow internal inductance ØEasy and quick reconfiguration to suit different testing needs ØUser friendly operation through computer and microprocessor controlled hardware. ØEquipped with resistors for performing lightening full, lightening chopped and switching impulse tests on wide range of loads. ØAutomatic grounding device and security grounding system (available as an option). ØAlarm annunciation to display all fault conditions. ØFiltered clear air constantly supplied through the sphere gaps while the system is running. ØReliable and fail safe triggering circuitry. KVTEK POWER SYSTEMS PRIVATE LIMITED STRUCTURE CHARACTERISTICS CHARGING RECTIFIER ØAll the coupling sphere gaps are mounted in an insulated D100-0.05 (100 kV, 50 mA) OR D100-0.15 DC (100 kV, 150 mA) tube and every level of sphere gaps is equipped with spark Charging Power Supply comprises of: observation panel. -