Design of cloud-based conversion of MODBUS RTU to IEC61850

In contemporary society, smart grid technology of which the foundation is substation technology plays a pivotal role in developping national economy. IEC61850 protocol is widely used in power grid technology due to its various advantages. However, many communication protocols still used in industrial fields, leading to that different devices can’t be well compatible with each other which will result in the low utilization rate. MODBUS protocol is a widely used communication protocol in the industrial scope. This paper mainly study the MODBUS RTU and IEC61805, and then design the transformation of the two protocols by means of object-oriented modeling, as well as design Restful API interface to collect data for visualization. Later, this method of conversion can also be applied to the conversion between other protocols, such as DNP3 and CAN protocols, which will accelerate the pace of protocol unification and promote the development of substation automation.