Comparison of the Electrical Conductivity of Polypropylene Laminated Paper (PPLP) and Kraft in LN2 According to the Number of Layers

Kwon, Ik-Soo; Hwang, Jeoung‐Yeon; Koo, Ja-Yoon; Na, Jin-Yong; Lee, Bang-Wook

doi:10.1109/tasc.2016.2550182

Cited by 16 publications

(2 citation statements)

References 6 publications

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“…When designing the insulation of MI cable, the better electrical performances of PP are main reason of replacing Kraft paper with PPLP. Due to the resistivity of PP film is much higher than that of Kraft paper, DC electric stress is supposed to mostly impose on the PP film which also happen to have a higher DC breakdown strength [9–11]. It has been demonstrated the insulation structure of PP film combination with Kraft paper gives higher DC breakdown strength than conventional Kraft paper insulation [2, 12, 13].…”

Section: Discussionmentioning

confidence: 99%

Interfacial space charge characteristic of PPLP insulation for HVDC cables

Zhao¹,

Pu²,

et al. 2020

High Voltage

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High‐voltage DC (HVDC) cables show more efficiency than high‐voltage AC cables over the long distance power transmission and have attracted significant attention recently due to rapid developments in off‐shore wind farm. Polypropylene laminated paper (PPLP) insulation based HVDC cables have provided a reliable operation for many years and are the highest voltage level in operation at the moment. In this study, the authors intend to understand the electrical performance of PPLP insulation system by examining space charge in detail, especially at the interfaces. It has been found that the interface between polypropylene and Kraft paper acts as trap for charge carriers, resulting in an optimal electric field distribution in PPLP insulation system. The optimal electric field distribution enhances overall electrical performance of PPLP insulation, including higher dc breakdown strength and lower electrical conductivity.

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Section: Discussionmentioning

confidence: 99%

Interfacial space charge characteristic of PPLP insulation for HVDC cables

Zhao¹,

Pu²,

et al. 2020

High Voltage

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“…Therefore lapped materials are more convenient as each slice can slightly slide on another giving mechanical compliance to the structure. Oil impregnated Kraft paper has been used for many years for undersea applications with good results and polypropylene lapped paper (PPLP) has shown good behavior at liquid nitrogen temperature [3,4]. However, space charge measurements in such lapped structures at liquid nitrogen temperature have never been studied.…”

Section: Introductionmentioning

confidence: 99%

PPLP and kraft paper under high voltage in liquid nitrogen

Holé

Bruzek

Lallouet

2017

2017 International Symposium on Electrical Insulating Materials (ISEIM)

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