Accurate time synchronization of power reference station based on BD3 system  

作　　者：Ting Zou Yuchen Huang Zhanqiang Cheng Jinshen Liu Hongwei Guo 

机构地区：[1]Guangdong Power Grid Co.,Ltd.Shaoguan Power Supply Bureau,Shaoguan 512000,P.R.China

出　　处：《Global Energy Interconnection》2023年第3期334-342,共9页全球能源互联网（英文版）

基　　金：supported by the Science and Technology Project of the China Southern Power Grid Company Limited under grant number GDKJXM20202032。

摘　　要：A Beidou 3(BD3)system-based power reference station can provide high-precision time synchronization for power distribution systems by sending synchronization data packets to devices in a multi-hop routing fashion.However,optimizing route selection to reduce both time synchronization error and delay is a challenging problem.In this paper,we establish a software-defined network-enabled power reference station time synchronization framework based on BD3.Then,we formulate the joint problem to minimize cumulative synchronization error and delay through multi-hop route selection optimization.A back propagation(BP)neural network-improved intelligent time synchronization route selection algorithm named BP-RS is proposed to learn the optimal route selection,which uses a BP neural network to dynamically adjust the exploration factor to achieve rapid convergence.Simulation results show the superior performance of BP-RS in synchronization delay,synchronization error,and adaptability with changing routing topologies.

关 键 词：Beidou 3 system Time synchronization Power reference station Back propagation neural network-improved intelligent route selection 

分 类 号：TM73[电气工程—电力系统及自动化] TN967.1[电子电信—信号与信息处理]