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Original Research Article

Year: 2015 | Month: June | Volume: 2 | Issue: 6 | Pages: 337-342

Saturation Analysis of Current Transformer

Riyas Ahamed M1, VimalrajM2, Arjuna Rao S3

1Department of Electrical and Electronics Engineering, C. Abdul Hakeem College of Engineering and Technology, Vellore, Tamil Nadu, India
2Department of Electrical and Electronics Engineering, TPEVR Govt. Polytechnic College, Vellore, Tamil Nadu, India
3Short Circuit Laboratory, CPRI, Bangalore, Karnataka, India

Corresponding Author: Riyas Ahamed M


Current Transformers (CT) are the key device in power system protection. Generally current transformers are designed such a way that, its secondary current is substantially proportional to the primary current under normal operating condition. It is very important to analyze the behavior of a current transformer for its applied primary current, which may contain large magnitude alternating current (AC) component, or small amount of direct current (DC) component that will result in saturation of CT. The study about CT saturation is on more demand due to the intrusion of DC offset currents in to the protection system. In paper different factors which lead CT to saturate are analyzed.

Keywords: Current transformers, Hysteresis and saturation.

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