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1. (WO2018036264) DIRECT-CURRENT INTER-STATION COMMUNICATION SWITCHING METHOD

Pub. No.:    WO/2018/036264    International Application No.:    PCT/CN2017/090300
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Wed Jun 28 01:59:59 CEST 2017
IPC: H04L 12/28
H04L 29/08
Applicants: NR ELECTRIC CO., LTD
南京南瑞继保电气有限公司
NR ENGINEERING CO., LTD
南京南瑞继保工程技术有限公司
Inventors: ZHOU, Qiang
周强
HUANG, Zhiling
黄志岭
YUAN, Ming
袁明
LI, Xiang
李响
WEN, Jifeng
文继锋
YUAN, Tao
袁涛
ZHOU, Guqing
周谷庆
Title: DIRECT-CURRENT INTER-STATION COMMUNICATION SWITCHING METHOD
Abstract:
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.