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3 results on '"Razaz, Mohammad"'

2. A Digital Ground Distance Relaying Algorithm to Reduce the Effect of Fault Resistance during Single Phase to Ground and Simultaneous Faults.

Author

Razaz, Mohammad, Seifossadat, Seyyed Ghodratollah, Razaz, Morteza, and Joorabian, Mahmood

Subjects
*ELECTRIC power system faults, *ELECTRIC transformers, *CURRENT transformers (Instrument transformer)
Abstract

This paper provides an algorithm of fault resistance compensation for digital ground distance relay considering the voltage and current transformer effects. Performance of the conventional ground distance relaying manner is adversely affected by different ground faults and also typical type, called a simultaneous open conductor and ground fault. The proposed scheme by using local-end data only, has shown satisfactory performances under wide variations in fault location, with different values of fault resistance and having positive and negative of power transfer angle. The presented method which has been carried out on the IEEE 14 bus benchmark is executed in PSCAD/EMTDC and MATLAB software, and the results show the accurate performance of mentioned configuration. [ABSTRACT FROM AUTHOR]

Published
2016

3. A Digital Ground Distance Relaying Algorithm to Reduce the Effect of Fault Resistance during Single Phase to Ground and Simultaneous Faults.

Author

Razaz, Mohammad, Seifossadat, Seyyed Ghodratollah, Razaz, Morteza, and Joorabian, Mahmood

Subjects
*RELAYING (Electric power systems), *ALGORITHMS, *FAULT tolerance (Engineering), *CURRENT transformers (Instrument transformer), *ELECTRIC potential
Abstract

This paper provides an algorithm of fault resistance compensation for digital ground distance relay considering the voltage and current transformer effects. Performance of the conventional ground distance relaying manner is adversely affected by different ground faults and also typical type, called a simultaneous open conductor and ground fault. The proposed scheme by using local-end data only, has shown satisfactory performances under wide variations in fault location, with different values of fault resistance and having positive and negative of power transfer angle. The presented method which has been carried out on the IEEE 14 bus benchmark is executed in PSCAD/EMTDC and MATLAB software, and the results show the accurate performance of mentioned configuration. [ABSTRACT FROM AUTHOR]

Published
2015

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