标题：Time Synchronization Based on Multiplexing RPR Channel and IRIG-B Time Code
作者：Wang, Haozhi; Zhu, Guofang; Hou, Meiyi; Wang, Shunpu
作者机构：[Wang, Haozhi; Zhu, Guofang; Hou, Meiyi] Shandong Univ, Sch Elect Engn, Jinan, Peoples R China.; [Wang, Shunpu] Shandong Elect Power Co, State Grid, 更多
会议名称：5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT)
会议日期：NOV 26-29, 2015
来源：2015 5TH INTERNATIONAL CONFERENCE ON ELECTRIC UTILITY DEREGULATION AND RESTRUCTURING AND POWER TECHNOLOGIES (DRPT 2015)
关键词：time synchronization; multiplexing RPR channel; smart grid; IRIG-B time; code; FPGA
摘要：For the time synchronization in smart grid, the paper proposes a solution that transmitting IRIG-B time code by multiplexing RPR channel. In the method, we multiplex RPR channel, using the control code in the coding of Ethernet physical layer to represent the rising and falling edges of the pulse signal, to transmit IRIG-B message. The RPR nodes are divided into master nodes and slave nodes. The master nodes are responsible for accessing precise time information and the output of IRIG-B time code, and slave nodes are responsible for receiving the IRIG-B time code and the output of precise time information calculated by using the recovery algorithm. This paper offer the design method based on Field Programmable Gate Array (FPGA), and simulating test is proceeded by the Modelsim simulation software. The experimental results show that the synchronization scheme achieves the low cost and high precision time synchronization, laying a good foundation for the establishment of wide area measurement and control system in smart grid.