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Published on: August 5, 2016
Study on the algorithm of fault recording analysis combining its time-domain waveforms with phase-domain trajectories
1School of Electrical and Control Engineering, Liaoning Technical University, Huludao Liaoning, 125105, China.
This study introduces a new method for analyzing power system fault recordings by transforming time-domain current waveforms into phase-domain trajectories. This approach simplifies fault analysis and waveform reformulation for improved power system operation.
Area of Science:
- Electrical Engineering
- Power Systems Analysis
Background:
- Power system faults disrupt operations and national economies, necessitating precise fault handling.
- Digital fault recorders capture electrical quantity waveforms, crucial for analyzing system disturbances.
Purpose of the Study:
- To develop and validate an algorithm for reformulating fault current waveforms.
- To analyze fault features by transforming time-domain data into phase-domain trajectories.
Main Methods:
- Simulated current fault recordings were analyzed.
- Waveforms were transformed from the time-domain to the phase-domain.
- Fault feature parameters were extracted and used for waveform reformulation.
Main Results:
- A high correlation coefficient was found between reformulated and original waveforms.
- The proposed algorithm demonstrated effectiveness in capturing fault features.
Conclusions:
- The developed algorithm offers a simple and convenient method for power system fault recording analysis.
- Reformulated waveforms can be utilized for improved power system functions.
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