南方电网技术2017，Vol.11Issue(4)：1-6,6.DOI:10.13648/j.cnki.issn1674-0629.2017.04.001
高压直流海底电缆三维仿真模型简化等效研究
Study on Simplification and Equivalence of 3D Simulation Model of HVDC Submarine Cables
摘要
Abstract
Temperature distribution and ampacity are two important parameters to reflect the operating state of submarine cables.According to the ±160 kV HVDC submarine cable of Nan`ao project, a three-dimensional (3D) simulation model of the cable is set up and a simplification method of cable transient model is proposed by using COMSOL Multiphysics finite element analysis software.On the basis of the constant thickness, multiple thin layers and adjacent medium are used as three equivalent layers.The thermal conductivity of the equivalent layer is computed by harmonic mean method,and the specific heat capacity and density of the equivalent layer are calculated by IEC 60287 method, which solve the problem that the meshs in the thin layer of the cable are too dense.Through the simulation model, the temperature distribution of cables under different ampacity is compared before and after simplification, which verifies the correctness and effectiveness of the simplification method.关键词
高压直流海底电缆/简化等效/温度分布/COMSOLMultiphysicsKey words
HVDC submarine cable/simplification and equivalence/temperature distribution/COMSOL Multiphysics分类
信息技术与安全科学引用本文复制引用
郝艳捧,陈云,阳林,黄吉超,傅明利,王邸博,侯帅..高压直流海底电缆三维仿真模型简化等效研究[J].南方电网技术,2017,11(4):1-6,6.基金项目
广东省自然科学基金资助项目(2014A030310371) （2014A030310371）
南方电网公司科技项目(K-KY2014-31).Foundation item: Supported by the Natural Science Foundation of Guangdong Province (2014A030310371) （K-KY2014-31）
the Science & Technology Project of China Southern Power Grid (K-KY2014-31). （K-KY2014-31）
