EFFECT OF CURRENT TRANSFORMER SATURATION ON DISTANCE RELAY IN 220KV POWER TRANSMISSION LINE
B.V.Chakradhar
Student of Electrical and Electronics Engineering, Geethanjali Institute of Science and Technology, Nellore, Andhra pradesh, India , IN
Y.Mohan
Student of Electrical and Electronics Engineering, Geethanjali Institute of Science and Technology, Nellore, Andhra pradesh, India , IN
CH.Kalyan
Student of Electrical and Electronics Engineering, Geethanjali Institute of Science and Technology, Nellore, Andhra pradesh, India , IN
P.Sai Krishna
Student of Electrical and Electronics Engineering, Geethanjali Institute of Science and Technology, Nellore, Andhra pradesh, India , IN
Keywords: Solar energy, Photovoltaic, Solar tracking, Microcontroller, Power
Abstract
The distance protection relay measures the line voltage and line current at the relay location and evaluates
the ratio between these quantities. Distance relays are widely used on transmission, and even distribution systems.
Current transformers (CT) are the very important part of the power system protection. The main purpose of a CT is to
transform the primary current in a high voltage power system to single level that can be handled by delicate electronic
device. This paper deals with the influence of CT saturation on distance digital relay. Saturation of the CT is evaluated
for fault close to the relay location.
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