Application of ZnO varistor protection to capacitors of artificially commutated inverter in MTDC system

Application of ZnO varistor protection to capacitors of artificially commutated inverter in MTDC system

The dynamic analysis of a mesh-type multiterminal HVDC (MTDC) transmission system including an artificially commutated inverter (ACI) with varistor-protected series capacitors is carried out using digital simulation techniques. The study shows that the varistor protection is feasible and improves th...

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Veröffentlicht in:IEEE transactions on power systems 1991-02, Vol.6 (1), p.356-363
Hauptverfasser: Manohar, P., Chandrasekharaiah, H.S.
Format: Artikel
Sprache:eng
Schlagworte:
240202 - Power System Networks, Transmission & Distribution- DC Systems- (1990-)
CAPACITORS
CHALCOGENIDES
COMPUTERIZED SIMULATION
DC SYSTEMS
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
Equations
EQUIPMENT PROTECTION DEVICES
Feeds
HVDC SYSTEMS
INVERTERS
OXIDES
OXYGEN COMPOUNDS
Power harmonic filters
POWER SYSTEMS
POWER TRANSMISSION AND DISTRIBUTION
Protection
SIMULATION
Transformers
Varistors
Voltage
ZINC COMPOUNDS
Zinc oxide
ZINC OXIDES
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Zusammenfassung:The dynamic analysis of a mesh-type multiterminal HVDC (MTDC) transmission system including an artificially commutated inverter (ACI) with varistor-protected series capacitors is carried out using digital simulation techniques. The study shows that the varistor protection is feasible and improves the performance of normal rated inverters which connect weak AC systems. It reduces the magnitude of the dynamic overvoltage and the peak direct current at the ACI during abnormal conditions, resulting in significantly improved dynamic performance for the MTDC system.< >
ISSN:0885-8950
1558-0679
DOI:10.1109/59.131083