Information Modeling and Evaluation Method of EPON System for Grid-Connected Distributed Energy Resources

In the field of grid-connected distributed energy resources (DER), telecommunication network plays an important role to carry various information and control messages. With the advantages of high bandwidth and reliability, the EPON (Ether Passive Optical Network) has become one of important communication system to support distributed energy resources. Moreover, IEC61850 protocol has been introduced into the communication field of distributed energy resources. However, the communication system has not been included in the IEC61850 architecture as IED (Intelligent Electronic Device) information model. Aimed to solve this probleme, the information modeling and evaluation method of Communication System for DER is proposed in this paper. The communication architecture of IEC61850 and the IED modeling are introduced. Then, information modeling of EPON is conducted, including logic node, port management, data requirement. Furthermore, the working state of EPON is evaluated comprehensively with the fuzzy comprehensive evaluation method.