Research on the Time Synchronization Method of GIS Partial Discharge Wireless Monitoring System Based on Physical Layer Time Capturing

WU Xinan; CHEN Hongtao; LI Lixue; ZHENG Yihui; ZHAO Jianming; WANG Xin

doi:10.13296/j.1001-1609.hva.2018.04.008

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Research on the Time Synchronization Method of GIS Partial Discharge Wireless Monitoring System Based on Physical Layer Time Capturing

更新时间：2025-04-26

- Research on the Time Synchronization Method of GIS Partial Discharge Wireless Monitoring System Based on Physical Layer Time Capturing
- High VoltageApparatus Vol. 54, Issue 4, Pages: 54-59+65(2018)
- 作者机构：
  
  1. 上海交通大学电工与电子技术中心
  2. 国网吉林省电力有限公司松原供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.04.008
  CLC： TM855
- Published：2018
- 稿件说明：
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[1]吴夕楠,陈洪涛,李立学,郑益慧,赵建明,王昕.基于物理层时间捕获的GIS局部放电无线监测系统时间同步方案研究[J].高压电器,2018,54(04):54-59+65.

WU Xinan, CHEN Hongtao, LI Lixue, et al. Research on the Time Synchronization Method of GIS Partial Discharge Wireless Monitoring System Based on Physical Layer Time Capturing[J]. High voltageapparatus, 2018, 54(4): 54-59+65.
[1]吴夕楠,陈洪涛,李立学,郑益慧,赵建明,王昕.基于物理层时间捕获的GIS局部放电无线监测系统时间同步方案研究[J].高压电器,2018,54(04):54-59+65. DOI： 10.13296/j.1001-1609.hva.2018.04.008.

WU Xinan, CHEN Hongtao, LI Lixue, et al. Research on the Time Synchronization Method of GIS Partial Discharge Wireless Monitoring System Based on Physical Layer Time Capturing[J]. High voltageapparatus, 2018, 54(4): 54-59+65. DOI： 10.13296/j.1001-1609.hva.2018.04.008.

摘要

在GIS局部放电无线监测系统中

时间同步是一个重要环节

而目前的无线时间同步方法在开销、能耗和精度等方面不能满足无线监测系统的要求。文中首先分析了影响无线网络时间同步精度的各项不确定性延迟

为此

引入了物理层时间捕获技术

在此基础上提出了一种新的时间同步方案。然后

基于CC2530芯片和TCXO温补晶振搭建了硬件实验平台

并对其进行了电磁抗干扰分析。最后

通过实验确定了时间捕获的响应延迟为4μs

据此对同步进行修正后

得到了文中方案单次同步带来的误差为亚纳秒级

同步精度随时间的漂移约为1×10

-6

。通过理论分析和实验验证

该方案完全满足无线监测系统的时间精度要求

可以灵活应用于无线监测系统。

Abstract

In GIS partial discharge wireless monitoring system

time synchronization is an important segment. How-ever

current synchronization methods cannot satisfy the requirement of wireless system in several ways. In this arti-cle

the uncertain delays in wireless system are eliminated and a new synchronization method is proposed based onphysical layer time capturing. Then an experiment platform is built based on CC2530 and TCXO and electromagneticinterference is analyzed. Finally

capturing delay is confirmed to 4 microseconds. After the synchronization is cor-rected

the result is obtained: the single-synchronization error is sub-nanosec

ond and the accumulated drift in pathwith time is about 1×10

-6

. With theoretical analysis and experiment

the method in this article satisfies the time accu-racy requirement and can be applied in wireless monitoring system flexibly.

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