Compared　with　traditional　current　transformers　(CTs),　electronic　current　transformers　(ECT)　have　the　following　advantages:　(1)　no　saturation　problem,　(2)　wider　measurement　range,　(3)　smaller　footprint,　(4)　lighter　weight,　and　(5)　easier　for　digitization.　Hence,　the　ECT　is　one　of　the　critical　components　in　the　development　of　intelligent　substations.　Since　the　majority　of　the　sensing　elements　of　ECTs　are　semiconductor　materials,　their　accuracy　and　sensitivity　are　influenced　by　the　ambient　temperature.　Moreover,　the　quiescent　output　voltage　of　the　semiconductor-based　ECT　is　also　affected　by　the　ambient　temperature.　This　paper　proposes　a　self-calibration　method　with　the　ability　of　quiescent-output-voltage　compensation　and　sensitivity　compensation.　The　proposed　design　can　automatically　adjust　the　quiescent　output　voltage　and　the　sensitivity　variation　when　the　temperature　changes.　The　experimental　test　results　demonstrate　that　an　ECT　with　the　proposed　self-calibration　method　can　achieve　Class　0.5　for　measuring　CTs　and　Class　5P20　for　protective　CTs.