摘要
为了进一步提高功率因数补偿的精确度,该装置采用89C52单片机及6264高速A/D模数转换芯片,实现对电压、电流的交流采样,通过运算获得电压、电流和有功功率,继而获得功率因数并实现自动补偿。由于采用交流采样技术,实现了信号的实时采集,克服了直流采样误差大和稳定性差的缺点。该装置硬件电路简单,还可实时显示功率因数的大小,并具有过压、欠压监测报警功能。
In order to improve the accuracy of power factor compensation,the voltage and current are AC-sampled by the device based on single-chip micro-controller89C52and high speed A/D convertor6264.The values of voltage,current ,active power and power factor are calculated and the automatic compensation is realized.The real-time signal acquisition with AC-sampling technology overcomes the short comings of bad stability and big error in DC-sampling.Its hardware is simple and it can real-time display power factor and support the alarm functions for over-and under-voltages.
出处
《电力自动化设备》
EI
CSCD
北大核心
2002年第11期58-59,共2页
Electric Power Automation Equipment
