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New power factor compensating device
Author(s): ZHANG Zhengxi
Pages: 58-
59
Year: 2002
Issue:
11
Journal: ELECTRIC POWER AUTOMATION EQUIPMENT
Keyword: 单片机; 交流采样; 功率因数; 补偿;
Abstract: 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.
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