Melting and breaking characteristics of strands of high‐strength and high‐corrosion‐resistant OPGW due to DC arc discharge simulating high‐energy lightning strike

2021 ◽  
Vol 214 (4) ◽  
Author(s):  
Mikimasa Iwata ◽  
Toshiya Ohtaka ◽  
Yutaka Goda ◽  
Susumu Yamagami ◽  
Atsushi Kato ◽  
...  
Keyword(s):  
Arc Discharge ◽  
High Strength ◽  
High Energy ◽  
Lightning Strike ◽  
Corrosion Resistant ◽  
High Corrosion ◽  
Dc Arc

scholarly journals Calculation of OPGW Strands Melting due to DC Arc Discharge Simulating High-Energy Lightning Strike

2019 ◽  
Vol 6 (2) ◽  
pp. 188-192
Author(s):  
M. Iwata ◽  
T. Nakano ◽  
M. Kotari ◽  
T. Ohtaka ◽  
Y. Goda
Keyword(s):  
Tensile Strength ◽  
Transmission Lines ◽  
Power Transmission ◽  
Arc Discharge ◽  
Melting Behavior ◽  
High Energy ◽  
Composite Fiber ◽  
The Other ◽  
Lightning Strike ◽  
Dc Arc

Metal strands of OPGWs (composite fiber-optic ground wires) installed in overhead power transmission lines are sometimes melted and broken when struck by high-energy lightning. This paper presents the calculation results regarding OPGW strands melting behavior when struck by DC arcs simulating high-energy lightning. The calculations revealed that the melted volume of the strand was 26% of the strand volume before the arc test, i.e. the rate of the non-melted volume of the strand was 74%. On the other hand, the residual tensile strength of the melted strand was 69% of the other non-melted strands after DC arc test. These results suggest there is a strong correlation between the calculated non-melted volume of the strand and the measured residual tensile strength of the melted strand.

Development of High-strength High-corrosion-resistant Conductor and Accessories

2020 ◽  
Vol 140 (4) ◽  
pp. 253-260
Author(s):  
Atsushi Kato ◽  
Kazuya Ohtani ◽  
Koji Nagano ◽  
Toshiharu Ogawa ◽  
Masato Watabe ◽  
...  
Keyword(s):  
High Strength ◽  
Corrosion Resistant ◽  
High Corrosion

A New, High-Strength and High-Corrosion-Resistant Titanium Alloy for Oilwell Use

1991 ◽  
Author(s):  
M. Okada ◽  
A. Kuroda ◽  
S. Kitayama ◽  
Y. Shida ◽  
M. Ueda ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
High Strength ◽  
Corrosion Resistant ◽  
High Corrosion
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