基于北斗卫星的故障行波定位系统的设计研究
发布时间：2018-07-15 21:05
【摘要】：智能电网的快速发展对电网的智能化提出更高的要求,快速定位故障并排除故障在该系统中占有越来越多的分量,变得越来越重要。本课题研究的基于北斗卫星系统的电网故障行波定位系统的研究,应用北斗卫星的授时及短报文通信的功能,为故障行波定位精准授时,及实时通信的两大重要环节提供了十分安全及稳定可靠的保障。论文首先分析了北斗卫星的授时及短报文通信原理,在此基础上,提出了采用北斗单、双向冗余授时方式的方法；同时对比分析了不同卫星授时的编码特性,特别地,采用码分多址结合扩频通信的应用,降低了北斗信息传递过程中误码率。通过对卫星授时及晶振授时特性的分析,提出了基于全数字锁相环的高精度授时系统,建立了新型高精度授时的模型,并对此进行仿真验证,证实该系统对时钟授时精度的提高具有明显的作用；同时,创新性地将北斗短报文卫星通信应用到故障行波定位系统中,提出了一套北斗通信的流程,机制,详细分析了北斗通信信息传递的结构,并对其帧结构及内容进行了详细地阐述,搭建了基于北斗系统的故障行波定位并提出了降低误码率的创新性机制。在文章的最后,对系统的硬件结构进行了详细说明,并通过实验进行了验证。理论分析和实验结果表明,该系统实现了对故障行波定位装置的高精度授时,通信的能力能够满足装置对于信息通信的要求,提升了电网的智能化水平。该项成果为我国电网自主性平台的搭建奠定了坚实的理论及技术基础。
[Abstract]:With the rapid development of smart grid, it is more and more important to quickly locate faults and eliminate faults in the system. Based on the Beidou satellite system, the paper studies the fault traveling wave location system of the power network, and applies the functions of the Beidou satellite's time service and short message communication to accurately serve the fault traveling wave location. And two important links of real-time communication provide a very safe and reliable guarantee. Based on the analysis of the principle of Beidou satellite's time service and short message communication, the method of using Beidou single and bi-directional redundant timing method is put forward, and the coding characteristics of different satellites are compared and analyzed, especially in this paper. Code division multiple access (CDMA) combined with spread spectrum communication is used to reduce the bit error rate (BER) in Beidou information transmission process. By analyzing the characteristics of satellite timing and crystal oscillator timing, a high precision timing system based on all-digital phase-locked loop is proposed, and a new model of high-precision timing is established and verified by simulation. It is proved that the system has obvious effect on the improvement of clock timing accuracy, and at the same time, the Beidou short message satellite communication is creatively applied to the fault traveling wave location system, and a set of flow chart and mechanism of Beidou communication are put forward. The structure of Beidou communication information transmission is analyzed in detail, and its frame structure and content are expounded in detail. The fault traveling wave location based on Beidou system is built and an innovative mechanism to reduce the bit error rate is put forward. At the end of the paper, the hardware structure of the system is explained in detail and verified by experiments. The theoretical analysis and experimental results show that the system achieves high precision timing service for fault traveling wave location device, and the communication ability can meet the requirements of information communication of the device and improve the intelligent level of power grid. This achievement has laid a solid theoretical and technical foundation for the construction of autonomous power grid platform in China.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM76;TN967.1
[Abstract]:With the rapid development of smart grid, it is more and more important to quickly locate faults and eliminate faults in the system. Based on the Beidou satellite system, the paper studies the fault traveling wave location system of the power network, and applies the functions of the Beidou satellite's time service and short message communication to accurately serve the fault traveling wave location. And two important links of real-time communication provide a very safe and reliable guarantee. Based on the analysis of the principle of Beidou satellite's time service and short message communication, the method of using Beidou single and bi-directional redundant timing method is put forward, and the coding characteristics of different satellites are compared and analyzed, especially in this paper. Code division multiple access (CDMA) combined with spread spectrum communication is used to reduce the bit error rate (BER) in Beidou information transmission process. By analyzing the characteristics of satellite timing and crystal oscillator timing, a high precision timing system based on all-digital phase-locked loop is proposed, and a new model of high-precision timing is established and verified by simulation. It is proved that the system has obvious effect on the improvement of clock timing accuracy, and at the same time, the Beidou short message satellite communication is creatively applied to the fault traveling wave location system, and a set of flow chart and mechanism of Beidou communication are put forward. The structure of Beidou communication information transmission is analyzed in detail, and its frame structure and content are expounded in detail. The fault traveling wave location based on Beidou system is built and an innovative mechanism to reduce the bit error rate is put forward. At the end of the paper, the hardware structure of the system is explained in detail and verified by experiments. The theoretical analysis and experimental results show that the system achieves high precision timing service for fault traveling wave location device, and the communication ability can meet the requirements of information communication of the device and improve the intelligent level of power grid. This achievement has laid a solid theoretical and technical foundation for the construction of autonomous power grid platform in China.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM76;TN967.1
【参考文献】
相关期刊论文 前1条
1 汪洋;赵宏波;刘春梅;陈U，
本文编号：2125379
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