IEEE/PSRC working group report on considerations in setting instantaneous overcurrent relays on transmission lines

  title={IEEE/PSRC working group report on considerations in setting instantaneous overcurrent relays on transmission lines},
  author={Alexander Apostolov and Ken Behrendt and J. Boyle and S. R. Chano and A. N. Darlington and T. Domin and Walter A. Elmore and Lesley Gray and Wendy G. Lowe and Michael J. McDonald and H. M. Shuh and W. M. Strang and P. Engel and Robert W. Haas and Irwin Hasenwinkle and Roger A. Hedding and B. Jackson and E. Krizauskas and Jennifer Wardlow and James E Stephens and S. E. Zocholl},
  journal={IEEE Transactions on Power Delivery},
Setting instantaneous overcurrent (IOC) relays on subtransmission lines has not been considered a complicated procedure by most utilities. However, undesirable operations have drawn attention to their intended function and application. This report addresses the causes for erroneous instantaneous overcurrent relay settings to help protection personnel avoid future undesirable operations. 
The research of the overcurrent relays based on phase-to-phase differential current -adaptive setting and coordination
This paper presents an adaptive overcurrent relay based on the principle of phase-to-phase differential currents, denominated as I/spl dot//sub AB/, I/spl dot//sub BC/ and I/spl dot//sub CA/, to
Operations of Distance Relay Third Zone Protection During Power System Critical Conditions: A Case Study on Indian Eastern Regional Grid
The third zone protection of distance relay serves as a backup for fault on the longest transmission line which is adjacent to the line to be protected, and distance relay provides spurious tripping under dependable situations.
A digital relaying algorithm for integrated power system protection and control
A new digital relaying algorithm was developed that is able to extract the amplitude and phase angle of signals from data samples received across Ethernet networks with variable jitter and the results show that the algorithm works well with variable length data windows, and variable sampling frequencies.
Power Transformer Differential Protection Based on Clarke's Transform and Fuzzy Systems
The power transformer is a piece of electrical equipment that needs continuous monitoring and fast protection since it is very expensive and an essential element for a power system to perform
Possible Negative Interactions between Fast Frequency Response from Utility-scale Battery Storage and Interconnector Protection Schemes
How BESS FFR could potentially induce undesired trip in out-of-step interconnector protection schemes and how FFR from BESS in Victoria could have enhanced frequency control and even prevent system separation, hence highlighting the importance of FFR location.


An on-line relay coordination algorithm for adaptive protection using linear programming technique
An adaptive system for protecting a distribution network should determine and implement relay settings that are most appropriate for the prevailing state of the power system. This paper presents a
Usage of CLPU curve to deal with the cold load pickup problem
Restoration of load after an extended power outage, whether planned or unplanned, raises various practical concerns. Previous studies have shown the cold load condition lasts between 2 to 60 minutes,