微型电脑应用2026，Vol.42Issue(5)：350-353,363,5.
基于主元分析的电容式电压互感器计量性能在线评估方法
Online Evaluation Method for Measurement Performance of Capacitive Voltage Transformers Based on Principal Component Analysis
朱斌 1吴达雷1
作者信息
- 1. 海南电网有限责任公司,电能计量中心,海南,海口 570100
- 折叠
摘要
Abstract
In view of the incomplete and inaccurate analysis of the measurement features of the capacitive voltage transformer(CVT)measurement evaluation system,a CVT measurement performance online evaluation method based on improved princi-pal component analysis algorithm is proposed.In the data analysis module,the traditional principal component analysis algo-rithm is combined with the sample point update algorithm and the data block update algorithm to improve the efficiency and adaptability of the algorithm.In the fault diagnosis module,the cross wavelet transform technology is introduced,the fault fea-tures are extracted by time-frequency domain analysis,and the dimensionality of the features is reduced by principal component analysis,which effectively reduces the noise interference and improves the accuracy of fault diagnosis.A large number of CVT measurement data are optimized,and the processing efficiency and real-time performance of the system are further improved by means of parallel calculation.The experiment proves that the proposed method takes less time to process large-scale data,the accuracy of anomaly detection is as high as 98％,and the misjudgment rate of a large number of CVT measurement data is low,which can meet the measurement needs in complex power grid environment.关键词
电容式电压互感器/计量性能/人工智能/主元分析/在线评估Key words
capacitive voltage transformers/measurement performance/artificial intelligence/principal component analysis/online evaluation分类
信息技术与安全科学引用本文复制引用
朱斌,吴达雷..基于主元分析的电容式电压互感器计量性能在线评估方法[J].微型电脑应用,2026,42(5):350-353,363,5.
