An Unsynchronized Measurements Correction Method for Two-Terminal Fault-Location Problems

This paper presents a method to correct the unsynchronized measurements for two-terminal fault-location problems. First, a synchronization index is defined to check whether the measurements are synchronized. A modified secant method-based algorithm is then developed to obtain a synchronization angle...

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Bibliographic Details
Published inIEEE transactions on power delivery Vol. 25; no. 3; pp. 1325 - 1333
Main Author Yu, Chi-Shan
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.07.2010
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithms
Applied sciences
Circuit faults
Computer simulation
Convergence
Electrical engineering. Electrical power engineering
Equations
Exact sciences and technology
Fault location
Impedance
Iterative methods
Mathematical analysis
Matlab
Phasor measurement units
Position measurement
Protection
Protective relaying
Synchronism
Synchronization
synchronization angle
synchronization index
Testing. Reliability. Quality control
Time measurement
unsynchronized measurements
Performance evaluation
MATLAB software
Fault location
Iterative method
synchronization angle
Synchronization
Algorithm
Location problem
Defect localization
synchronization index
Measurement method
unsynchronized measurements
Simulator
Comparative study
Defect detection
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ISSN0885-8977
1937-4208
DOI10.1109/TPWRD.2009.2037631

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Summary:This paper presents a method to correct the unsynchronized measurements for two-terminal fault-location problems. First, a synchronization index is defined to check whether the measurements are synchronized. A modified secant method-based algorithm is then developed to obtain a synchronization angle and correct the unsynchronized measurements. When the unsynchronized measurements are corrected, the fault location can be simultaneously obtained from the intermediate result of the proposed computation. Thus, although the proposed method is developed to correct the unsynchronized measurements, the fault-location problem can also be solved. Compared with the previous works, the proposed iteration equation is simpler. The MATLAB/SIMULINK simulator is used to evaluate the effectiveness of the proposed method.
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ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2009.2037631