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Title: Transmission line relay mis-operation detection based on time-synchronized field data

In this paper, a real-time tool to detect transmission line relay mis-operation is implemented. The tool uses time-synchronized measurements obtained from both ends of the line during disturbances. The proposed fault analysis tool comes into the picture only after the protective device has operated and tripped the line. The proposed methodology is able not only to detect, classify, and locate transmission line faults, but also to accurately confirm whether the line was tripped due to a mis-operation of protective relays. The analysis report includes either detailed description of the fault type and location or detection of relay mis-operation. As such, it can be a source of very useful information to support the system restoration. The focus of the paper is on the implementation requirements that allow practical application of the methodology, which is illustrated using the field data obtained the real power system. Testing and validation is done using the field data recorded by digital fault recorders and protective relays. The test data included several hundreds of event records corresponding to both relay mis-operations and actual faults. The discussion of results addresses various challenges encountered during the implementation and validation of the presented methodology.
 [1] ;  [1] ;  [1]
  1. Texas A & M Univ., College Station, TX (United States). Dept. of Electrical and Computer Engineering
Publication Date:
Report Number(s):
Journal ID: ISSN 0378-7796
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Electric Power Systems Research
Additional Journal Information:
Journal Volume: 125; Journal Issue: C; Journal ID: ISSN 0378-7796
Research Org:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Country of Publication:
United States
24 POWER TRANSMISSION AND DISTRIBUTION; Fault detection, fault location, power system faults, power system protection, relay misoperation, time-synchronized measurements
OSTI Identifier: