Research On Information Model Of Microgrid Based On IEC61850

IEC61850 will be a global standard for enhancing the compatibility between devices?realizing the unified operation of control system and reaching the goal of sharing data information in the field of power system.It is changing the integration and management of the devices with its open?transparent and inclusive technology.In this paper,different levels of energy routers are studied,and an information model is designed for them to complete the interaction and management of information in the microgrid by analyzing the information produced during their operation.Based on this,this paper mainly completed the following work:(1)Firstly,the application scenario,main functions and main operation modes of home energy router are studied.Based on the analysis of their communication requirements and the division of logic functions,an information model is designed for it.Moreover,according to the working status and operation mode of the bi-directional power conversion device,a new logical node is defined to be the supplement of IEC61850 and its usage is also introduced.Finally,studied the configuration methods of each template and used SCL configuration tool to achieve it.(2)The information model of regional electric energy router are studied.First of all,the overall framework of regional microgrid was studied.Combined with its composition,the main functions that can be realized were defined.The topology of regional electric energy router is designed and the information model is constructed by IEC61850.Then,the key part of the information model,which is not defined in the IEC61850 standard,was supplemented and created so that the regional electric energy router can achieve the goal of regional grid connection management,regional energy management and regional electric power user management.(3)The method of information integration and management based on IEC6180 is studied.First of all,based on the SCL file of the special device defined by IEC61850,the overall architecture of the microgrid information management was designed.Then the network architecture and the method to access the network were designed based on ethernet for equipment in the microgrid.Finally,taking the distributed power supply as an example,this paper elaborated the information management mode of DERs access and exit based on port monitoring.In this paper,we established a complete set of AC-DC micro-network information system architecture with power router as the core,and proposed a management method and control flow of micro-grid for DERs.The results of this paper enriched the IEC61850 logical node class,enriched the information integration technology of the microgrid system,and provided reliable support for the operation scheduling and device management of the microgrid.