| 引用本文: | 夏俊峰,樊亚东,李静,方力谦,谢鹏.行波故障测距系统中高速数据采集卡的开发与应用[J].电力自动化设备,2006,(1):48-51 |
| .Development of high-speed data acquisition system for traveling-wave fault locating system[J].Electric Power Automation Equipment,2006,(1):48-51 |
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| 摘要: |
| 在行波故障测距中,传统的数据采集系统无法适应采集高速变化的暂态电压、电流行波的要求,难以实现故障的精确定位。介绍了一种基于PCI总线的高速数据采集卡的软硬件。硬件以现场可编程门阵列FPGA(FieldProgrammableGateArray)为核心,由高速A/D转换、高速SDRAM缓存、PCI接口等一系列外围电路组成,采用Pass-Thru工作方式实现PCI总线接口和用户外部互联设备或存储设备间高性能突发式数据传输。软件分为数据采集、启动、选相定位、远程通信等几部分。该系统采样率达60MHz,能够很好地进行输电线路暂态行波的采集,在故障定位及微机保护中都可广泛应用。 |
| 关键词: 高速数据采集,FPGA,PCI总线 |
| DOI： |
| 分类号:TP274.2 |
| 基金项目: |
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| Development of high-speed data acquisition system for traveling-wave fault locating system |
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XIA Jun-feng FAN Ya-dong LI Jing FANG Li-qian XIE Peng
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| Abstract: |
| In traveling-wave fault locating,the traditional data acquisition system can not record the fast-changed traveling waves of voltage and current for accurate fault locating.A novel high-speed data acquisition system based on PCI bus is designed.With FPGA(Field Programmable Gate Array)as its core,the hardware consists of high-speed A /D converter,high-speed SDRAM buffering storage,PCI interface and so on.The sudden data transmission between PCI bus interface and external interconnected devices or storage devices is processed in Pass-Thru pattern.The software includes data acquisition,initiation,phase selection and fault locating,remote communication.Its sample speed can reach 60 MHz and meets the need of transient traveling wave acquisition.The system can be used in fault locating and microprocessor-based relay protection. |
| Key words: high-speed data acquisition,FPGA,PCI bus |
