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|1. (WO2018036264) DIRECT-CURRENT INTER-STATION COMMUNICATION SWITCHING METHOD|
|Applicants:||NR ELECTRIC CO., LTD
NR ENGINEERING CO., LTD
|Title:||DIRECT-CURRENT INTER-STATION COMMUNICATION SWITCHING METHOD|
Disclosed is a direct-current inter-station communication switching method, comprising steps of: a direct-current control system is connected to a communication transmission device by means of a communication switching module, to realize inter-station communication by means of an electric power communication transmission network; the direct-current control system sends an ACTIVE mark representing an on-duty or standby operation state and information required to be switched between stations to the communication switching module in the form of an Ethernet message; the communication switching module selectively sends the Ethernet message of an on-duty system to the communication transmission device according to the ACTIVE mark in the Ethernet message, so that the Ethernet message is delivered to other convertor stations by means of the electric power communication transmission network. The Ethernet communication switching method can simplify design of a communication system, meet two-end direct-current and multi-end direct-current coordinative control requirements, and adapt to development of wide-area communications technologies.