Study on Integration and Compatibility of IED in Digital Substation

The achievement of highly efficient integration and compatibility of intelligent electronic device (IED) has always been the key issue of digital substation which conforms to IEC61850 protocol in communication standard. This paper studies on the information model and equipment test which have important influence on compatibility to the system integration, first of all, the composition of IEC61850 information model structure is analyzed and dynamic modeling theory based on abstract communication service interface (ACSI) is proposed in order to solve the system integration problems caused by pluggable IED in digital substation which could lead to changes of real-time information model; then the key test contents and implementation plans which are related to the assessment of IED integration would be discussed. These studies have theoretical reference and guiding significance to the access research of IED in digital substation.