Summary

At the Cigre2024 Paris Session, we presented the principles and advantages of the current integration method (Q-t method) and its applications (ID: 11055, “Direct Current Integrated

Charge Method as a Useful Tool for Dielectric Measurements”). Here, we will describe some examples of analysis referring to polymer physics as an application for analyzing the electrical conduction phenomena in insulating materials since our last presentation.

Three parameters, 𝑄(0), 𝑟ch and 𝑄d (𝑡) are utilized effectively, in this paper. By utilizing these parameters, we have experimentally clarified the validity of time-temperature and time-electric field superposition principles in the electrical conduction of polymer insulating materials. We have also demonstrated that a power law fits well with 𝐼(𝑡) or 𝑄d (𝑡) as a basis, and that variations in the type or chemical treatment of polymers can lead to changes in the mechanisms of electrical conduction. These new insights will significantly aid in understanding the mechanisms of electrical conduction and space charge formation in polymer insulating materials while potentially simplifying the modeling of the electrical behavior of actual products.

Additional informations

Publication type Session Materials
Reference D1_10999_2026
Publication year
Publisher CIGRE
Country Japan
Study committees
File size 1 MB
Price for non member 30 €
Price for member 30 €

Authors

SEKIGUCHI Yoitsu - The University of Osaka Japan; ONODA Takaaki - Sumitomo Electric Industries, Ltd. Japan; MASHIO Shoji - Sumitomo Electric Industries, Ltd. Japan; YASUDA Shuhei - Sumitomo Electric Industries, Ltd. Japan; URAKAWA Osamu - The University of Osaka Japan; INOUE Tadashi - The University of Osaka Japan

Keywords

Current, Integration, Charge, Q-t method, Dielectric Properties, Polymer Physics

Anomalous Electric Conduction in Polymeric Insulating Materials: Analysis by Integrated Current