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Distance Protection of Lines Emanating From Full-Scale Converter-Interfaced Renewable Energy Power Plants—Part II: Solution Description and Evaluation by Ali Hooshyar; Maher A. Azzouz; Ehab F. El-Saadany is a Engineering article available to read on EtoBox.

What is Distance Protection of Lines Emanating From Full-Scale Converter-Interfaced Renewable Energy Power Plants—Part II: Solution Description and Evaluation about?

Having unveiled the problems associated with distance protection of lines connected to full-scale converterinterfaced 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 in industrial memory-polarized distance relays. A comprehensive performance evaluation is presented to verify the reliable operation of the proposed methods.

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Author

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

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Published

2015

Language

EN

Field

Engineering (Physical Sciences)