行波测距用数据采集系统的设计

Data Acquisition System Design for Traveling Wave Fault Location

行波波头到达时刻差的确定是保证行波测距精度的关键。根据行波测距的要求,采用4通道60 MHz采集卡设计了专用的数据采集系统。并利用此数据采集系统进行了模拟实验,实验结果显示,所检测行波信号波头突变特性明显。在此基础上,可较容易实现对于行波波头到达时刻的精确确定。

Wave-head arriving time detection is important to traveling wave method. Data acquisition system for fault location is built in this paper using 4 channel/60 MHz high speed acquisition card. Analogue experiment is carried out by using this system, the result shows the experiment wave has good abrupt features which indicate this system has good performance.