Design And Simulation Of Self Adaptive Differential Protection For A Power Transformer

This paper presents design of the novel adaptive differential protection scheme-based technique for protection of a power transformer that consider high security and sensitivity. The proposed scheme uses a novel adaptive protection criterion so as to regulate the parameters of percentage differential characteristics. The adaptive protection scheme is simulated using PSCAD and the result provides high sensitivity on internal faults in the power transformers and making the proposed scheme to discard upper and lower limits and to provide exact value of settings of protective relay to self-regulate the setting values.