Simulation analysis method for temperature distribution of optical fiber composite undersea cable during earth faults

• Main Authors: CHEN GUOZHI, CHEN ZHENXIN, LIN XIAOBO, LI SHIQIANG, LU ZHIFEI, ZHANG LEI, WANG YANG, ZHANG NAFEI, LYU ANQIANG, GAO ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2017
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a simulation analysis method for temperature distribution of an optical fiber composite undersea cable during earth faults and relates to the field of fault simulation analysis. At present, an undersea cable has a complex structure, and huge difference exists among various layers of materials; when simulation is performed by adopting simulation analysis, the conditions of large data volume, complex calculation, extremely-tedious analysis of a temperature distribution rule and accurate analysis results possibly occur. The simulation analysis method comprises the following steps: establishing a geometrical model of the earth faults of the undersea cable; setting the type of an electrothermal coupling finite element unit and material parameters; dividing finite element meshes by adopting multiple methods; setting seabed boundary conditions and voltage and current loads; analyzing temperature distribution data and a time varying rule after the earth faults occur. According to the technical