Comparison of Mathematical Methods for Compensating a Current Signal under Current Transformers Saturation Conditions
Ismoil Odinaev1, Aminjon Gulakhmadov2,3,4, Pavel Murzin1
1Department of Automated Electrical Systems, Ural Federal University, 620002 Yekaterinburg, Russia.
Sensors (Basel, Switzerland)
|November 13, 2021
Summary
This study addresses current transformer core saturation, a critical issue affecting protection systems. It evaluates methods to recover current signals during saturation, identifying the most effective techniques for improved system reliability.
Area of Science:
- Electrical Engineering
- Power Systems Protection
Background:
- Electromagnetic current transformers are vital for secondary circuit and protection systems.
- Current transformer core saturation can lead to maloperation of protection algorithms.
Purpose of the Study:
- To explore methods for recovering current signals during current transformer core saturation.
- To analyze the advantages and disadvantages of saturation detection methods.
Main Methods:
- Comparative analysis of mathematical methods for current signal recovery.
- Approbation and selection of the most promising recovery methods.
- Testing stability and sensitivity with added white noise and considering remanent magnetization.
Main Results:
- Identified and compared various methods for detecting current transformer core saturation.
- Evaluated mathematical techniques for current signal recovery under saturation.
- Determined the most effective signal recovery methods based on error analysis.
Conclusions:
- The study reveals the most promising methods for current signal recovery during transformer saturation.
- Provides a comparative analysis of error metrics for evaluating recovery technique performance.
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