应用嵌入式技术开发智能检测配电终端

Intelligent Detector Development for Power Distribution Terminals by Application of Embedded Technology

基于准同步采样技术,研究0.4k V低压配电系统三相电压、三相电流等电气参数的采样方法,结合DSP计算引擎提供的DFT算法,实现高精度电流、电压、频率、有功功率、无功功率、总谐波畸变率及2~31分次谐波含量等的测量和计算。基于电子设计自动化技术实现装置电流参数信号采样电路、电源电路、LCD显示电路的设计开发,实现底层硬件平台的单元测试、系统测试和安装运行。

Basing on the quasi synchronous sampling technology,the sampling methods for such electrical parameters as three-phase voltage and current of 0.4k V low-voltage distribution system was studied,including combining with DFT algorithm provided by DSP computation engine to measure and calculate high-precision current,voltage,frequency,active power and reactive power,total harmonic distortion rate and the 2 to 31subharmonic content and basing on EDA technology to design and develop sampling circuit,communication circuit and power circuit of the current parameter signals and LCD display circuit so as to implement unit testing of the underlying hardware platform,system testing and installation and operation.