一种新型电能质量分析仪的研究

Research on a novel power quality analyzer

介绍了一种新型三相电能质量分析装置。该装置以TMS320LF2407A DSP为核心处理器,通过CPLD对各种控制逻辑进行有效管理,由高精度AD对三相电压、电流信号进行采集,实时监测电网三相电压、三相电流、有功功率、无功功率、电网频率等基本信息量,同时具备谐波分析功能,能够测量电压闪变以及三相不平衡度。通过LCD及键盘操作实现人机交换,还可通过串口将数据上传至上位机。

This paper mainly discusses a novel 3-phase power quality analyzer. The equipment based on the digital signal processor——TMS320LF2407A performs an efficient management to various control logic via CPLD. A high precision AD converter samples three-phase voltage and three-phase current signals and thus this device could detect the change of three-phase voltages, three-phase currents,active power, reactive power and system frequency in real time. In addition, the equipment can calculate harmonics of power system and measure the flicker and three-phase imbalance. The excellent interface of the device can be controlled by liquid crystal displayer and key operation. The data can be uploaded to a high level computer through serial communication.