摘要
针对变压器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,较好地解决了同步误差对测量精度的影响。
In order to settle the problems of data sampling of current, voltage, and power in the testirig system for transformer,the cause of synchronous error is analysed.The math models of errors for the voltage and current virtual value and averaged power are established, and a method to reduce the measure error is provided.
出处
《自动化技术与应用》
2007年第5期131-132,115,共3页
Techniques of Automation and Applications
基金
黑龙江教育厅重大科技项目(9551z010)
关键词
变压器试验
微机测试
同步软件采样
采样误差
transformer test
computer control
synchronous software sampling
sampling error
