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Monitoring the Ratio Error Drift of CVTs Connected to the Same Phase along with KDE-PCA | IEEE Conference Publication | IEEE Xplore

Monitoring the Ratio Error Drift of CVTs Connected to the Same Phase along with KDE-PCA


Abstract:

The capacitor voltage transformer is now widely used in the high-voltage grid and its ratio error drift is one of the major fault developed from the maintenance experienc...Show More

Abstract:

The capacitor voltage transformer is now widely used in the high-voltage grid and its ratio error drift is one of the major fault developed from the maintenance experience. Thus, monitoring its ratio error drift efficiently attracts great interests. Conventional methods are time-consuming and need power cut, while some innovative data-driven methods are not so practical because of its rigorous precondition. Therefore, we propose a fuzzy modeling method for CVTs connected to the same phase along with the principal component analysis(PCA). Besides, the kernel density estimation(KDE) is also applied to improve its sensitivity. The KDE-PCA is more sensitive to the ratio error drift than the conventional PCA method as well as previous proposed methods through a field application in a 220kV thermal power plant.
Date of Conference: 20-23 May 2019
Date Added to IEEE Xplore: 09 September 2019
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Conference Location: Auckland, New Zealand

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