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Cable Jointing

The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform

J. Shinagawa – 1st expert on this subject based on the ideXlab platform

  • Interfacial diffusion method to improve the breakdown strength of XLPE power Cable joints
    2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077), 2000
    Co-Authors: Tatsuki Okamoto, Hiroshi Suzuki, Katsumi Uchida, T. Tanaka, M. Inami, J. Shinagawa

    Abstract:

    To further compact EHV XLPE power Cables and joints has been a very important requirement among utility companies and so we developed a new method to improve the breakdown strength at the semicon-interface in a mold-type Cable joint in order to fulfil the requirements. The method was named “interfacial diffusion method” and is based on an additive mixed into the semicon layer of an XLPE power Cable joint. We found that the additive, conventional surfactant, diffused into the insulation layer during the heating process at the Cable Jointing. The additive improves the lamellar orientation at the interface and forms a diffusion layer near the interface, and consequently increases the breakdown strength at the interface. The method was applied to XLPE power Cable joint models with insulation thickness up to 9 mm and the model passed a voltage endurance test for 154 kV Cable joint. This paper describes some experimental results in terms of the breakdown strength and material analysis of XLPE insulation at the interface in the model with a transmission electron microscope (TEM). TEM analysis showed that the lamellar orientation in the XLPE insulation at the interface is improved as well as that in the XLPE insulation in the Cable part.

Showa Electric – 2nd expert on this subject based on the ideXlab platform

  • Interfacial diffusion method to improve the breakdown strength of XLPE power Cable joints
    , 2000
    Co-Authors: Showa Electric

    Abstract:

    To compactize EHV XLPE power Cables and joints has been very important requirements among utility companies and so we developed a new method to improve the breakdown strength at the semicon-interface in a mold-type Cable joint in order to hlfill the requirements. The method was named as “Interfacial Diffision Method” and is based on an additive mixed into semicon layer of an XLPE power Cable joint. We found that the additive, conventional surfactant, diffised into insulation layer during heating process at Cable Jointing. The additive improves the lamellar orientation at the interface and forms a diffusion layer near the interface, and consequently increases the breakdown strength at the interface. The method was applied to XLF’E power Cable joint models with insulation thickness up to 9 mm and the model passed avoltage endurance test for 154kV Cable joint. This paper describes some experimental results in terms of the breakdown strength and material analysis of XLPE insulation at the interface in the model with a transmission electron microscope (TEM). TEM analysis showed that the lamellar orientation in the XLPEinsulation at the interface is improved as well as that in the XLPEinsulation in the Cable part. This paper describes the effectiveness of the method for a mold-type XLPE Cable joint. Weak point models were used . The models with an insulation thickness of 3.7 mm and 9 mm have the same structure of a weak point in a real Cable joint. That is a rising part of supplement insulation of a joint. Breakdown voltages of the models at high temperature were measured and material properties such as lamellar orientation and interface roughness in the model were measured in order to check the additive efFect on the insulation material. The additive in this paper is only one kind.

Tatsuki Okamoto – 3rd expert on this subject based on the ideXlab platform

  • Interfacial diffusion method to improve the breakdown strength of XLPE power Cable joints
    2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077), 2000
    Co-Authors: Tatsuki Okamoto, Hiroshi Suzuki, Katsumi Uchida, T. Tanaka, M. Inami, J. Shinagawa

    Abstract:

    To further compact EHV XLPE power Cables and joints has been a very important requirement among utility companies and so we developed a new method to improve the breakdown strength at the semicon-interface in a mold-type Cable joint in order to fulfil the requirements. The method was named “interfacial diffusion method” and is based on an additive mixed into the semicon layer of an XLPE power Cable joint. We found that the additive, conventional surfactant, diffused into the insulation layer during the heating process at the Cable Jointing. The additive improves the lamellar orientation at the interface and forms a diffusion layer near the interface, and consequently increases the breakdown strength at the interface. The method was applied to XLPE power Cable joint models with insulation thickness up to 9 mm and the model passed a voltage endurance test for 154 kV Cable joint. This paper describes some experimental results in terms of the breakdown strength and material analysis of XLPE insulation at the interface in the model with a transmission electron microscope (TEM). TEM analysis showed that the lamellar orientation in the XLPE insulation at the interface is improved as well as that in the XLPE insulation in the Cable part.