An Accurate Non-Pilot Scheme for Accelerated Trip of Distance Relay Zone-2 Faults
Author | Ghorbani, Amir |
Author | Mehrjerdi, Hasan |
Author | Sanaye-Pasand, Majid |
Available date | 2022-11-14T10:49:08Z |
Publication Date | 2021 |
Publication Name | IEEE Transactions on Power Delivery |
Resource | Scopus |
Resource | 2-s2.0-85099116532 |
Abstract | The delayed operation of distance relays zone-2 element for the faults at the end of the line is excessive. It reduces the fault clearing speed and therefore, is one of the main factors that can endanger power system stability. This paper proposes an impedance-based scheme for discrimination between the last 20% of the line length faults and the adjacent line faults, which are covered by the relay zone-2. The suggested non-pilot scheme uses a modified fault location formula for the accelerated zone-2 operation of distance relays. The negative- and zero-sequence components of local signals are utilized to calculate the accurate fault location after the remote circuit breaker (CB) operation. The proposed algorithm is independent of fault resistance, power flow direction, pre-fault condition, and it can clearly distinguish internal faults from the adjacent line faults. Simulation results show that the proposed method can identify the remote CB operation and thus can accelerate the tripping of zone-2 within a very short time for different fault locations, fault types, fault resistances, and load angles. Also, accurate fault location has been achieved under all simulation conditions. 1986-2012 IEEE. |
Sponsor | Manuscript received December 7, 2019; revised March 12, 2020, May 20, 2020, and July 1, 2020; accepted July 3, 2020. Date of publication July 7, 2020; date of current version May 21, 2021. This work was supported in part by the National Priorities Research Program under Grant 11S-1125-170027, and in part by the Qatar National Research Fund (a member of Qatar Foundation). (Corresponding author: Amir Ghorbani.) Amir Ghorbani is with the Department of Electrical Engineering, Ab-har Branch, Islamic Azad University, Abhar 4561897594, Iran (e-mail: ghorbani.a@abhariau.ac.ir). |
Language | en |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Subject | Accelerated trip distance relay fault location fault resistance zone-2 of distance relay |
Type | Article |
Pagination | 1370-1379 |
Issue Number | 3 |
Volume Number | 36 |
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