Dual-communication protocol redundancy communication system

The invention discloses a dual-communication protocol redundant communication system in the technical field of electric power communication, which comprises a Modbus slave station module and an IEC61850 server module which are positioned in an in-situ measurement and control device, and a Modbus master station module, an IEC61850 client module and a data center module which are positioned in a monitoring background, the Modbus slave station module and the Modbus master station module form a Modbus communication link, and the Modbus communication link is connected with the IEC61850 server module. The IEC61850 server module and the IEC61850 client module form an IEC61850 communication link, the Modbus slave station module and the IEC61850 server module establish a data mapping relation through a model, and the data center module performs data interaction with an in-situ measurement and control device through the Modbus communication link and/or the IEC61850 communication link. According to the invention, throug