基于谐波功率潮流分析的谐波电能检测与计量

Detection and measurement device of harmonic electric energy based on harmonic power tidal current analysis

由于常规电量计量装置是基于正弦波设计的,因此设计出了一个新颖的谐波检测与计量装置,该装置由A/D转换单元、FFT单元、LCD显示单元与网络通讯单元等组成,运用了FPGA(现场可编程逻辑阵列)与DSP程序.根据实验现场实际运行实践,本计量装置可精确测量出具体谐波次数对电压、电流的影响程度,从而可判断出电能质量的优劣.实验结果表明,该装置结构紧凑,运行可靠,具有很高的精度,满足电气工程实际应用的需求.

Usual electric energy meters can＇ t distinguish fundamental from harmonics. And some odd harmonics can make watt-hour meter reverse. Therefore, power administration can＇ t measure the electric energy accurately. A novel harmonic detection and measurement device is presented. The developed device can detect harmonics, but it is different from traditional measurement devices. The system adopts FPGA and DSP processor and consists of A/D, FFT, LCD display and network communication units. The experimental results demonstrate that the device has more accurate response and meets application＇s requirements in electrical engineering.