In order to reduce the measurement error of using current integration method to calculate erroneous elec-tricity during the fault period of electric energy metering devices,this article introduces paired t-test and Bootstrap sampling method to scientifically calculate the correction coefficient of erroneous electricity.Firstly,based on the paired t-test method,a small sample set is used to test whether there is a significant difference between the estimat-ed electricity consumption during the normal time period calculated by the traditional current integration method and the actual electricity consumption.Then,using the rolling Bootstrap sampling method,a large sample dataset is ob-tained,and the ratio of the two is calculated to obtain the correction coefficient for the estimated electricity con-sumption.Finally,the above process was validated through computational experiments.The results indicate that small sample paired t-test can reduce the workload of calculating erroneous electricity,while large sample estimation can make the estimation of correction coefficients more reliable and reduce estimation errors.
关键词
高压计量/电流积分法/Bootstrap/滚动抽样/误差校正
Key words
high pressure metering/current integration method/Bootstrap/rolling sampling/error correction
维普
万方数据