引用本文: | 周飞飞,何迎利,赵 华,等.基于时间敏感网络的流量调度机制在智能变电站中的研究与实现[J].电力系统保护与控制,2021,49(19):107-114.[点击复制] |
ZHOU Feifei,HE Yingli,ZHAO Hua,et al.Research and realization of a traffic scheduling mechanism based on a time-sensitive network in a smart substation[J].Power System Protection and Control,2021,49(19):107-114[点击复制] |
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摘要: |
为解决智能变电站中数据流量增长与控制信息实时性的矛盾,提出了一种基于时间敏感网络的二层以太网新技术来对流量进行调度。该技术通过在传输时间上采用时隙窗口独占和共享的思想,在传输通道中采用帧抢占的机制,在前端根据流量特性进行分类,在后端通过算法进行参数的最优化配置。该技术可以改进智能变电站中过程层对传统交换机的流量调度机制,提升对时间敏感流量进行确定性时延调度的效果,为智能变电站的以太网网络提供具有低时延抖动的传输服务,为电力系统的服务质量(QoS)的提升提出了一个新思路。 |
关键词: 时间敏感网络 流量调度 时隙窗口 帧抢占 低时延抖动 智能变电站 |
DOI:DOI: 10.19783/j.cnki.pspc.201609 |
投稿时间:2020-12-24修订日期:2021-02-26 |
基金项目:国家电网有限公司总部科技项目资助“FlexE柔性以太网技术在能源互联网中应用的关键技术研究”(SGZJDK00DYJS2000030) |
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Research and realization of a traffic scheduling mechanism based on a time-sensitive network in a smart substation |
ZHOU Feifei1,HE Yingli2,ZHAO Hua2,GE Hongwu2,LU An2 |
(1. NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 211106, China;
2. Nanjing NARI Information and Communication Technology Co., Ltd., Nanjing 211106, China) |
Abstract: |
There is a contradiction between the rapid growth of data flow and the real-time control of information in a smart substation. Therefore a new 2 layer Ethernet technology based on a time-sensitive network is proposed to schedule the traffic. This technology adopts ‘slot windows monopoly’ and ‘sharing thoughts’ in transmission time, a frame preemption mechanism in the transmission channel, and classification according to the flow characteristic at the front end. It also optimizes the configuration of parameters through an algorithm at the back end. Thus this technology can improve the flow scheduling mechanism of the process layer to the traditional switch in the smart substation, and can promote the effect of deterministic delay scheduling for time-sensitive traffic. It thus provides the transmission service with low delay jitter for the ethernet network of a smart substation, and puts forward a new idea for improving Quality of Service (QoS) of a power system.
This work is supported by the Science and Technology Project of the Headquarters of State Grid Corporation of China “Research on Key Technologies of FlexE Flexible Ethernet Technology Applied in Energy Internet” (No. SGZJDK00DYJS2000030). |
Key words: time sensitive network flow scheduling time slot window low time delay and low time jitter intelligent substation |