电力系统模型辨识仪多路数据同步采集器设计

摘要

为了获得电力系统仿真计算中元件准确的模型参数，研发了一款专用于电力系统的模型辨识仪，并着重介绍了其数据采集器的设计。数据采集器采用高度集成的模块化设计，C8051F410单片机为其控制核心，4片8通道模数转换芯片AD7606构成采集器的模数转换模块，实现32路输入信号的同步采集；由文件管理控制芯片CH376S和U盘组成的存储模块解决了脱机状态下大容量采集数据的存储问题；各模块之间通过子程序调用协调通信；最后通过对多路相异电压信号的实际测量，证明了数据采集器实现其预期功能，且采样精度满足需要。%A model identification apparatus which can provide accurate model parameters for power system simulation is designed, and the design focuses on its data acquisition unit. The unit adopts highly-integrated modularization design, and uses MCU C8051F410 as the core. The analog-to-digital conversion module is made up of 4 pieces of AD7606 to realize synchronous sampling of 32 input signals. The data storage module consists of document management control chip CH376S and U disk to solve the mass-data storage problem. All these modules coordinate communications by subroutine calls. Measurement on different voltage signals of multiple channels proves that data acquisition unit realizes the predefined function, and the accuracy meets the requirement.