仪用变压器的误差分析及数字自动补偿方法的研究

Instrument Transformer Error Analysis and Research on Its Numerical Automatic Compensation

以电流互感器为例，分析了仪用变压器的误差来源，提出了数字自动补偿的算法．并介绍了应用此方法提高互感器精度的实例——在电工多用现场检测仪中的应用．该方法可广泛应用于微机化电量计量仪表或需采集电量参数的微机控制系统中，在不增加硬件成本的前提下，有效地提高系统或装置的测控精度．

The current transformer is taken as an example for analysis on the error source of instrument transformer. This paper also puts forward a numerical method for automatic compensation of the error. A practical example to enhance measuring precision of the sensor, applicable to electrical multi use devices, for on site tests is introduced. This method can be widely used in computerised measuring devices or computer controlled systems. It can effectively enhance the measurement and control precision of those systems or devices without increasing their hardware cost.