Self calibration is a traceability method that relies on the metrological characteristics of measuring equipment to achieve local calibration and reproduction of measurement values, which helps to establish a flat traceability system for measurement values. However, the current standard current transformer self calibration system lacks corresponding quality monitoring strategies and information-based management methods, which limits the development of flat value transmission. This article proposes a measurement assurance technology applicable to the self calibration system of standard current transformers, which monitors the measurement performance of the self calibration system through quality control charts and value comparisons. Simultaneously design the functional architecture and full process technical supervision process of the self calibration management platform to achieve remote technical supervision from higher-level metrology technical institutions, ensuring the authenticity of the self calibration process and data of provincial metrology technical institutions, and guaranteeing the accuracy and reliability of the self calibration system values.