Investigation of Interaction between Polymer Film and Insulating Oil by Dielectric Property Measurement

Suzuki, Masahiro; Kakimoto, Akira; Matsuda, S.

doi:10.1109/tei.1983.298675

Cited by 5 publications

(1 citation statement)

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“…Power equipment is the key factor for the safe and reliable operation of power systems [ 1 , 2 , 3 ]. As the economy rapidly grows, power load is synchronously increased dramatically.…”

Section: Introductionmentioning

confidence: 99%

Electrochromism of Viologen/Polymer Composite: From Gel to Insulating Bulk for High-Voltage Applications

Nie¹,

Zhang

Zhu

et al. 2021

Materials

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Power equipment operates under high voltages, inducing space charge accumulation on the surface of key insulating structures, which increases the risk of discharge/breakdown and the possibility of maintenance workers experiencing electric shock accidents. Hence, a visualized non-equipment space charge detection method is of great demand in the power industry. Typical electrochromic phenomenon is based on redox of the material, triggered by a voltage smaller than 5 V with a continuous current in μA~mA level, which is not applicable to high electric fields above 106 V/m with pA~nA operation current in power equipment. Until now, no naked-eye observation technique has been realized for space charge detection to ensure the operation of power systems as well as the safety of maintenance workers. In this work, a viologen/poly(vinylidene fluoride-co-hexafluoropropylene)(P(VDF–HFP)) composite is investigated from gel to insulating bulk configurations to achieve high-voltage electrical-insulating electrochromism. The results show that viologen/P(VDF–HFP) composite bulk can withstand high electric fields at the 107 V/m level, and its electrochromism is triggered by space charges. This electrochromism phenomenon can be visually extended by increasing viologen content towards 5 wt.% and shows a positive response to voltage amplitude and application duration. As viologen/P(VDF–HFP) composite bulk exhibits a typical electrical insulating performance, it could be attached to the surface of insulating structures or clamped between metal and insulating materials as a space charge accumulation indicator in high-voltage power equipment.

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“…Power equipment is the key factor for the safe and reliable operation of power systems [ 1 , 2 , 3 ]. As the economy rapidly grows, power load is synchronously increased dramatically.…”

Section: Introductionmentioning

confidence: 99%