Research on an Electric Energy Traceability Method for DC Charger based on Wide Area Multi-source Data

The accuracy of electric vehicle DC charger electric energy was directly related to the fairness for charging trade settlement. Aiming at the problem of reliable energy traceability for electric vehicle DC charger, a method of electric energy traceability for DC charger based on wide area multi-source data was proposed. The robust algorithm A statistical method was used to analyze the comparison results to ensure the consistency and reliability of DC energy traceability though the comparison of DC energy metering and calibration capabilities. It is found that the DC energy value obtained by using the method based on wide area multi-source data was closer to the calibration result issued by the superior unit, so as to the evaluation result was more effective comparing with the traditional statistical method. This method can ensure the accuracy and consistency of the electrical energy value of electric vehicle DC charger in the case of the DC value traceability system has not been established, so it has a certain value for promotion and application.