Relay Element Performance During Power System Frequency Excursions

@article{Hou2008RelayEP,
  title={Relay Element Performance During Power System Frequency Excursions},
  author={Daqing Hou},
  journal={2008 61st Annual Conference for Protective Relay Engineers},
  year={2008},
  pages={105-117}
}
  • Daqing Hou
  • Published 2008 in
    2008 61st Annual Conference for Protective Relay…
Many voltage and current protection elements in microprocessor relays use the fundamental frequency component of current and voltage. Distance relays also calculate apparent fault impedance at the power system frequency. Most microprocessor relays track system frequency to calculate the current, voltage, and impedance quantities. When the integrity of the power system is in jeopardy, system frequency can experience a large and rapid excursion because of generation and load imbalances from… CONTINUE READING