基于合并单元装置的高精度时间同步技术方案

发布时间：2019-06-09 22:59

【摘要】：智能变电站的发展对合并单元的时间同步性能提出了更高的要求,研究如何实现高精度的对时和守时功能是智能变电站发展的现实需要。文中从授时源误差、晶振特性、守时算法、逻辑处理等主要因素出发,针对合并单元装置的对时及守时技术需求,探讨了高精度时间同步的设计与实现方法。在此基础上,提出一种具有工程意义的合并单元时间同步技术的实现方案。该方案以现场可编程门阵列(FPGA)为控制核心,在FPGA内部使用不同功能模块实现各个环节的逻辑设计,并通过CPU与FPGA的相互配合实现精确的时间同步及良好的守时性能。合并单元时间同步性的试验结果及其在智能变电站的实际应用表明,该技术满足了智能变电站内合并单元装置时间同步功能的要求。
[Abstract]:The development of intelligent substation puts forward higher requirements for the time synchronization performance of the merging unit. It is a practical need for the development of intelligent substation to study how to realize the high precision timing and punctuality function. Based on the main factors such as timing source error, crystal vibration characteristics, timing algorithm, logic processing and so on, the design and implementation method of high precision time synchronization is discussed in this paper according to the technical requirements of timing and punctuality of the combined unit device. On this basis, an implementation scheme of merging unit time synchronization technology with engineering significance is proposed. The scheme takes the field programmable gate array (FPGA) as the control core, uses different functional modules to realize the logic design of each link in FPGA, and realizes accurate time synchronization and good punctuality performance through the cooperation between CPU and FPGA. The test results of time synchronization of merging unit and its practical application in intelligent substation show that the technology meets the requirements of time synchronization function of merging unit device in intelligent substation.
【作者单位】：国电南瑞科技股份有限公司;南瑞集团公司(国网电力科学研究院);中国电力科学研究院;
【分类号】：TM63;TM76

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