Studies of Commutation Failures in HVDC System Based on Hypersim
- 1 October 2006
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The study of commutation failures requires more detailed and accurate simulation of HVDC systems. Hypresim is an integrated digital simulator, which could provide reliable, extensible and high-speed electromagnetic transient simulation for power systems. Its special characteristics are introduced in this paper. A HVDC system is established based on Hypersim. Modeling details of the ac system, dc lines, dc converters and their control systems are presented. Commutation failures are triggered by external disturbances on the ac bus and internal faults on the thyristor valve; the dynamic behavior of the HVDC system is demonstrated; detailed analysis is also given. A protection method against commutation failures is proposed. Simulation result indicates that the probability of failure could be reduced.Keywords
This publication has 10 references indexed in Scilit:
- The evolution of power transmission models to accommodate power electronicsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- A novel method to mitigate commutation failures in HVDC systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Study on commutation failure in an HVDC inverterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Digital real-time simulation for distribution systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Appropriate HVDC transmission simulation models for various power system stability studiesIEEE Transactions on Power Systems, 1998
- High Voltage Direct Current TransmissionPublished by Institution of Engineering and Technology (IET) ,1998
- Commutation failures in HVDC transmission systemsIEEE Transactions on Power Delivery, 1996
- Real-time EMTP-based transients simulationIEEE Transactions on Power Systems, 1994
- Transient AC voltage related phenomena for HVDC schemes connected to weak AC systemsIEEE Transactions on Power Delivery, 1992
- Accurate Modelling of Frequency-Dependent Transmission Lines in Electromagnetic Transient SimulationsIEEE Transactions on Power Apparatus and Systems, 1982