As the basis of data communication for dispatching and control system

data bus assumes the work of the scheduling of data exchange. With more and more obvious integrated characteristics of power grid operation

the current bus is gradually difficult to meet the needs of data exchange between different dispatching agencies. The paper analyzes the architecture of the bus of smart grid dispatching and control system. According to the characteristics of the dispatching data network

a wide-area data bus architecture suitable for the integrated and collaborative operation of multi-level dispatching is proposed

and the power dispatching domain name management

distributed agencies

wide-area service bus

wide-area message bus and other key components of the wide-area data bus are analyzed in order to achieve wide-area sharing of services and efficient transmission of information. The application prospects of the wide-area data bus in power grid are finally expounded.