Facilitating data and measurement exchange between three phase and positive sequence network applications

Most energy management system applications are developed based on the positive sequence network model. While it is commonly assumed that this is a reasonable approximation for steady state analysis, quantifying the amount of error introduced as a result of this approximation is needed. Furthermore, methods to minimize the impact of these errors on the network applications must also be developed. This paper presents a user interface and its associated software which are developed in order to facilitate investigations on the above problem. It allows computation and easy exchange of measurement data between a three-phase system simulator such as EMTP-ATP and a positive sequence network analysis software such PET (Power Education Toolbox). The paper describes the structure and utilization of the developed user interface by using small scale examples.