Distance Protection of Lines Emanating from Full-Scale Converter-Interfaced Renewable Energy Power Plants-Part II: Solution Description and Evaluation

Ali Hooshyar, Maher A. Azzouz, Ehab F. El-Saadany

Research output: Contribution to journalArticlepeer-review

96 Scopus citations

Abstract

Having unveiled the problems associated with distance protection of lines connected to full-scale converter-interfaced renewable energy power plants (CIREPPs) due to remote and intermediate infeed in Part I of this paper, Part II describes why the countermeasures currently deployed by commercial relays to tackle these problems in a conventional power system fail in the presence of a CIREPP. Then, a new formula to calculate impedance is devised for the phase element of the relay to prevent maloperation in the event of line-to-line to ground faults. In addition, a communication-assisted method with minimal bandwidth requirement is proposed for balanced and line-to-line faults. The issues that should be taken into consideration for single-line-to-ground faults are also discussed. The solutions presented in this paper are simple and independent of the host system grid code, and can be applied to industrial memory-polarized distance relays. A comprehensive performance evaluation is presented to verify the reliable operation of the proposed methods.

Original languageBritish English
Article number6954549
Pages (from-to)1781-1791
Number of pages11
JournalIEEE Transactions on Power Delivery
Volume30
Issue number4
DOIs
StatePublished - 1 Aug 2015

Keywords

  • Converter-interfaced renewable energy power plant (CIREPP)
  • line distance relay
  • photovoltaic farm
  • Type IV wind farm

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