Capacitive voltage transformer is an important metering device in power system,the traditional principal element analysis method has certain limitations in the error evaluation of CVT.In order to evaluate the error of CVT more accurately,this paper proposes an adaptive evaluation method based on moving window weighted PCA.This method integrates the ideas of moving window PCA and exponentially weighted PCA,and can adaptively update the e-valuation model to realize the state evaluation of CVT.Compared with the traditional principal element analysis meth-od,the moving window weighted PCA method has better adaptability,can effectively identify mutation error and gradi-ent error,and is more suitable for long-term CVT.
维普
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