摘要
电力设备的局部放电(局放)信号频率范围较宽,为使用高采样速率的数据采集板卡构建在线监测系统,用FPGA技术开发了局放信号在线监测智能单元。该单元实现了8位采样数据精度,100MHz采样速率,100MHz的模拟输入带宽,2MB存储深度;该单元还实现了信号的放大,多路选通,信号隔离等信号调理功能以及基于RS-485和CAN的双总线通讯。最后对局放信号进行初步的放电相位分析。该智能单元可广泛应用于需要局放测试的电力设备。
The frequency range of the partial discharge of power equipment is wide, so the data acquisition unit with high sampling rate is a key part for the on-line monitoring system. One intelligent unit is designed for the on-line monitoring of the partial discharge based on Field Programmable Gates Array （FPGA）. The unit achieved g-bit sampling precision, 100 MS/s sampling rate, 100 MHz analog input bandwidth and it can store up to 2 MB data, The unit is also designed both the RS-485 and the CAN bus. One phase window analysis algorithm is realized. This unit can he widely applied into power equipments which need to measure their PD signals.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2008年第11期2368-2373,共6页
High Voltage Engineering
基金
国家科技攻关计划(2003BA901A18)
国家自然科学基金(50677052)~~
