
Voltage source converters based HVDC (VSC-HVDC) systems involving overhead transmission lines are prone to severe over-currents and over-voltages during dc line faults. This necessitates the operation of the system with some kind of protective devices to overcome the effects of dc line faults. Due to uneconomical and non availability of commercial DC circuit breakers the present day VSC-HVDC systems find applications only in back to back and/ or underground cable transmission, power ranging in the order of 400 MW. In the present work, the application of superconducting fault current limiter (SCFCL) along with chopper controlled resistors (CCR) is proposed to overcome the effect of over-voltages and over currents. The VSC-HVDC system is analysed with the high voltage and high current (110 kV, 2.8 kA) resistive SCFCL and the CCR in PSCAD/EMTDC environment. The results of analysis for various ac and dc fault conditions are quite encouraging.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 14 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
