In a power system, high voltages and currents are used for transmission and distribution of power over long distances from generation plant to end users. Instrument transformers transform these high currents and voltages to standardized low and easily measurable values for their easy monitoring and control. This ensures reliable and continuous supply of energy at all times. One of the integral components of the transformer is its magnetic core. This core saturates at fault conditions, causing problems in monitoring and the control of the system. Studying properties of these different magnetic materials helps in understanding saturation phenomenon. In this thesis, different materials were tested to study their saturation with the help of hysteresis curves and better material with higher saturation level was selected for protection application. Higher saturation level ensures that transformers will work reliably in faulty conditions, thus protecting the system.
January 30, 2015
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