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1. (WO2018158122) METHOD AND DEVICE FOR DETERMINING CAPACITIVE COMPONENT PARAMETERS

Pub. No.:    WO/2018/158122    International Application No.:    PCT/EP2018/054261
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Thu Feb 22 00:59:59 CET 2018
IPC: G01R 27/26
Applicants: ABB SCHWEIZ AG
Inventors: ABEYWICKRAMA, Nilanga
BENGTSSON, Tord
HEDBERG, Jonas
Title: METHOD AND DEVICE FOR DETERMINING CAPACITIVE COMPONENT PARAMETERS
Abstract:
The present disclosure relates to a method of determining the capacitance and loss-factor of each of a plurality of capacitive components of an electrical power device, wherein the method comprises: a) obtaining for each capacitive component a respective capacitance value and loss-factor value, and b) processing the capacitance values and the loss-factor values, wherein the processing involves removing a common influence of temperature on the capacitance values from the capacitance values and removing a common influence of temperature on the loss-factor values from the loss-factor values to obtain for each capacitive component a temperature-compensated capacitance value and a temperature-compensated loss-factor value.