Fault Detection and Interruption in an Earthed HVDC Grid Using ROCOV and Hybrid DC Breakers

@article{Sneath2015FaultDA,
  title={Fault Detection and Interruption in an Earthed HVDC Grid Using ROCOV and Hybrid DC Breakers},
  author={Jeremy Sneath and Athula D. Rajapakse},
  journal={IEEE Transactions on Power Delivery},
  year={2015},
  volume={31},
  pages={973-981}
}
Different HVDC grid types and the respective protection options are discussed. An earthed bipole HVDC grid was modeled in PSCAD, and using simulation results, the necessity of di/dt limiting inductors to contain the rise of fault currents within the capacity of current hybrid dc breakers is demonstrated. The impact of different inductor sizes on current rise was studied. A fault detection and localization scheme using the rate of change of voltage measured at the line side of the di/dt limiting… CONTINUE READING
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