Distance Protection Algorithm based on alpha/beta/0-components and Delta Quantities for Getting Insensitive against Power Swings

Jaworski M, Jäger J, Lorz T (2020)

Publication Type: Conference contribution

Publication year: 2020

Conference Proceedings Title: The 15th IET International Conference on Developments in Power System Protection

Event location: Liverpool GB

DOI: 10.1049/cp.2020.0118

Abstract

The stabilisation of the distance protection function against inappropriate trip responses due to power swings represents the main topic of this paper. In today's power grids, this problem is covered by the implementation of power swing blocking functions. However, this function is only a corrective add-on algorithm and not an integral part of the distance function itself. This leads to the fact, that symmetrical short-circuits followed up by a power swing are subjected to strongly reduced backup protection dependability from the upstream distance relays. The aim of creating a distance algorithm, which offers inherent power swing insensitivity instead of using a power swing blocking function, is achieved by applying the Δ-quantities of the αβ0-components of voltage and current. Beginning with the basics of the proposed distance algorithm up to a suitable relay logic, the all-important parts of the Δ21 relay are provided and discussed in this paper. Finally, a study case provides the platform for its performance evaluation.

Authors with CRIS profile

Michael Jaworski Lehrstuhl für Elektrische Energiesysteme Johann Jäger Professur für Elektrische Energieversorgung Tobias Lorz Lehrstuhl für Elektrische Energiesysteme

How to cite

APA:

Jaworski, M., Jäger, J., & Lorz, T. (2020). Distance Protection Algorithm based on alpha/beta/0-components and Delta Quantities for Getting Insensitive against Power Swings. In The 15th IET International Conference on Developments in Power System Protection. Liverpool, GB.

MLA:

Jaworski, Michael, Johann Jäger, and Tobias Lorz. "Distance Protection Algorithm based on alpha/beta/0-components and Delta Quantities for Getting Insensitive against Power Swings." Proceedings of the DPSP - The 15th IET International Conference on Developments in Power System Protection, Liverpool 2020.

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