手持式变电站瞬态磁场记录仪软件设计与实现
发布时间：2018-08-25 12:47
【摘要】：智能化变电站的高速发展带来了控制终端智能化、安装位置就近化等一系列革新,同时也导致了二次系统电子设备愈加的靠近一次系统,进而使得其直接面对更加复杂恶劣的电磁环境。在这一新形势下,完善对干扰信号的检测与记录手段,分析并评价其对二次设备的影响程度具有重要的意义和价值。然而,现有的瞬态磁场检测设备普遍在性能及功能上存在不足,难以达到目的。为此,本项目针对磁干扰研究开发了一套手持式瞬态磁场记录仪及其软件系统,而本文所做的工作集中在仪器数字系统与软件系统的设计与实现,在系统硬件平台下,开发了基于FPGA的数字系统与基于ARM的软件系统,该系统能对10Hz~5MHz的磁场进行测量、记录、示波以及分析,经实验测试能够响应瞬态磁脉冲,且具备现场测试的性能。本文设计与实现的主要内容如下:一、考察了变电站电磁干扰的特征,确定了对瞬态磁场的测量方案,分析了瞬态磁场对二次设备干扰的量化原理,给出了瞬态磁场干扰度的计算方法;二、在仪器的硬件平台上,利用数字逻辑设计工具及Matlab等仿真软件,设计并实现了采集与带宽控制,DDR2缓存与波形处理,触发与GPS控制以及总线与系统控制等数字逻辑模块,并使用静态时序分析工具,对关键路径施加约束,保证了系统的频率性能。三、在双ARM微处理器系统上,开发了仪器的嵌入式软件部分,包括外设配置与底层驱动,数字系统流程控制,波形测量与实时显示,SD卡存储与回读等功能模块;同时,还实现了在ARM上对瞬态磁干扰的干扰度计算。四、仪器开发完成后,先在实验室完成了瞬态磁脉冲的测试分析,验证仪器在功能及性能能够满足变电站现场实测,后于西昌换流站进行了现场测试。
[Abstract]:The rapid development of intelligent substation has brought about a series of innovations such as intelligent control terminal, proximity of installation position, and so on. At the same time, it has also led to the electronic equipment of secondary system getting closer to the primary system. So that it directly faces the more complex and harsh electromagnetic environment. In this new situation, it is of great significance and value to improve the means of detecting and recording interference signals, and to analyze and evaluate their influence on secondary equipment. However, the existing transient magnetic field detection equipment generally has shortcomings in performance and function, so it is difficult to achieve the purpose. Therefore, a hand-held transient magnetic field recorder and its software system are developed in this project. The work in this paper is focused on the design and implementation of the instrument digital system and the software system, and on the hardware platform of the system. The digital system based on FPGA and the software system based on ARM are developed. The system can measure, record, oscillograph and analyze the magnetic field of 10Hz~5MHz. The main contents of this paper are as follows: first, the characteristics of electromagnetic interference in substation are investigated, the measurement scheme of transient magnetic field is determined, and the quantization principle of the interference of transient magnetic field to secondary equipment is analyzed. The calculation method of the interference degree of transient magnetic field is given. Secondly, on the hardware platform of the instrument, the acquisition and bandwidth control of DDR2 buffer and waveform processing are designed and realized by using digital logic design tools and simulation software such as Matlab. The digital logic modules such as trigger and GPS control, bus and system control, and static timing analysis tools are used to impose constraints on critical paths to ensure the frequency performance of the system. Thirdly, the embedded software of the instrument is developed on the dual ARM microprocessor system, including peripheral configuration and bottom drive, digital system flow control, waveform measurement and real-time display SD card storage and read back module, etc. The interference degree of transient magnetic interference on ARM is also calculated. 4. After the development of the instrument, the test and analysis of the transient magnetic pulse are completed in the laboratory, and the function and performance of the instrument can meet the field measurement of the substation, and then the field test is carried out at Xichang converter station.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM936
本文编号：2202930
[Abstract]:The rapid development of intelligent substation has brought about a series of innovations such as intelligent control terminal, proximity of installation position, and so on. At the same time, it has also led to the electronic equipment of secondary system getting closer to the primary system. So that it directly faces the more complex and harsh electromagnetic environment. In this new situation, it is of great significance and value to improve the means of detecting and recording interference signals, and to analyze and evaluate their influence on secondary equipment. However, the existing transient magnetic field detection equipment generally has shortcomings in performance and function, so it is difficult to achieve the purpose. Therefore, a hand-held transient magnetic field recorder and its software system are developed in this project. The work in this paper is focused on the design and implementation of the instrument digital system and the software system, and on the hardware platform of the system. The digital system based on FPGA and the software system based on ARM are developed. The system can measure, record, oscillograph and analyze the magnetic field of 10Hz~5MHz. The main contents of this paper are as follows: first, the characteristics of electromagnetic interference in substation are investigated, the measurement scheme of transient magnetic field is determined, and the quantization principle of the interference of transient magnetic field to secondary equipment is analyzed. The calculation method of the interference degree of transient magnetic field is given. Secondly, on the hardware platform of the instrument, the acquisition and bandwidth control of DDR2 buffer and waveform processing are designed and realized by using digital logic design tools and simulation software such as Matlab. The digital logic modules such as trigger and GPS control, bus and system control, and static timing analysis tools are used to impose constraints on critical paths to ensure the frequency performance of the system. Thirdly, the embedded software of the instrument is developed on the dual ARM microprocessor system, including peripheral configuration and bottom drive, digital system flow control, waveform measurement and real-time display SD card storage and read back module, etc. The interference degree of transient magnetic interference on ARM is also calculated. 4. After the development of the instrument, the test and analysis of the transient magnetic pulse are completed in the laboratory, and the function and performance of the instrument can meet the field measurement of the substation, and then the field test is carried out at Xichang converter station.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM936
【参考文献】
相关硕士学位论文 前1条
1 李福超;瞬态磁场测量仪硬件设计与实现[D];电子科技大学;2012年
，本文编号：2202930
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