微机控制变压器试验过程中的同步软件采样方法

Synchronous software sample technology in computer control system of transformer test

针对变压器试验微机测试系统对电流、电压、功率等变量数据采集的特殊要求 ,分析了同步误差的产生原因 ,给出了同步软件采样的无差条件 ,建立了电压电流有效值和平均功率测量误差的数学模型 ,提供了减小测量误差的措施 ;应用同步软件采样技术 ,不需增加采样周期数 ,不需要硬件同步环节 。

In transformer trial computer test system, aiming at unusual request of current, voltage, power variable data collection, we analyzed the reason for forming synchronization error, presented synchronization software sampling zero error condition, founded math model of virtual value of current voltage and average power measure error, offered step of reducing measure error. Not needing to add sampling periodicity and hardware synchronization tache, applying synchronization software sampling technology can eliminate synchronization error versus measure precision infection better.