摘要
常规的电力测量仪表计量误差校正方法以误差来源检测为主,根据检定权值校正的误差仍高于误差限值,影响电力测量仪表的正常运行。因此,设计了基于小波变换的电力测量仪表计量误差校正方法。核定电力测量仪表计量的动态误差,通过分析电力测量仪表计量的动态负荷特征,判断动态误差的校正条件。基于小波变换构建电力测量仪表计量误差校正模型,选取不同的小波基,对电力测量仪表计量误差进行小波变换,得到计量误差的能量集中特性,从而实现误差的有效校正。采用对比实验,验证了该方法的误差校正效果更佳,能够应用于实际生活中。
Conventional power measuring instrument measurement error correction methods mainly focus on error source detection.The error corrected according to verification weight is still higher than the error limit,which affects the normal operation of power measuring instrument.Therefore,the measurement error correction method of power measuring instrument based on wavelet transform is designed.The dynamic error of power measuring instrument is verified,and the correction condition of dynamic error is judged by analyzing the dynamic load characteristics of power measuring instrument.The measurement error correction model of power measuring instrument is built based on wavelet transform,and different wavelet bases are selected to perform wavelet transform on the measurement error of power measuring instrument,and the energy concentration characteristics of the measurement error are obtained,so as to realize the effective correction of the error.By contrast experiment,it is proved that the error correction effect of this method is better,and it can be applied to real life.
作者
李萍
Li Ping(Guoneng Ningdong First Power Generation Co.,Ltd.,Lingwu,China)
出处
《科学技术创新》
2023年第26期25-28,共4页
Scientific and Technological Innovation
关键词
小波变换
电力测量仪表
计量误差
校正方法
wavelet transform
electric power measuring instrument
measurement error
calibration method
