| 引用本文: | 李 彬,祁 兵,孙 毅,唐良瑞.基于IEC61588的智能配用电同步对时网关[J].电力自动化设备,2013,33(4): |
| LI Bin,QI Bing,SUN Yi,TANG Liangrui.IEC61588 based precision synchronization gateway for power distribution[J].Electric Power Automation Equipment,2013,33(4): |
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| 摘要: |
| 提出一种新型的面向无线传感网络的分布式对时方法，研究了基于IEC61588精确网络时钟同步协议的传感网P2P、E2E对时技术，并研制出同时支持IEC61588主时钟装置和从时钟模块的智能对时设备。建立了无线传感网的PTP分布式对时链路的数学模型，通过PTP跨越定时链路抖动转移特性改进设备定时性能。提出在无线传感网底层采用快速时钟编解码方法减少由于高层应用对定时链的影响，并针对不同的时钟模式进行测试。测试结果表明，相比传统模式，采用快速编解码技术的时间偏差下降约50%，平均定时偏差为0.02~0.03 ms。 |
| 关键词: IEC61588 同步 网关 无线传感网络 编码 时钟 |
| DOI： |
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| 基金项目:国家科技重大专项（2010ZX03006-005-001）；中央高校基本科研业务费专项资金资助项目（12QN10） |
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| IEC61588 based precision synchronization gateway for power distribution |
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LI Bin, QI Bing, SUN Yi, TANG Liangrui
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School of Electrical and Electronic Engineering，North China Electric Power University，Beijing 102206，China
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| Abstract: |
| A distributed clock synchronization approach focused on wireless sensor network is proposed and the network P2P／E2E synchronization technology based on IEC61588 is researched. An intelligent clock synchronization device which supports both IEC61588 master and slave clock modules is developed. The distributed PTP synchronization link is established for wireless sense network，which improves the synchronization performance through crossing the timing-chain to transfer jitter. Fast clock decoding in low layer of wireless sensor network is proposed to reduce the impact of high-layer application on timing-chain. Its performance is evaluated under different scenarios and in different synchronization modes. Results show that，compared with traditional synchronization modes，the time deviation is reduced by 50 % and the average timing error is about 0.02 ~ 0.03 ms. |
| Key words: IEC61588 synchronization gateways （computer networks） wireless sensor networks decoding clocks |
