海上风电场海底高压电缆电磁暂态过程的仿真分析  

Simulation Analysis of the Electro-Magnetic Transient on High Voltage Submarine Cable of the Offshore Wind Farms

作　　者：黄辉[1] 郑明[2] 蓝锦标[1] 李迪[1] 

机构地区：[1]五邑大学信息工程学院,广东江门529020 [2]广东省电力设计研究院,广东广州510663

出　　处：《电网与清洁能源》2012年第11期72-76,81,共6页Power System and Clean Energy

摘　　要：为了能更好地确定海上风电场海底高压电缆的选型要求,使用PSCAD/EMTDC软件建立相应的海上风电场仿真计算模型。针对海上风电场工频过电压、操作过电压和雷电过电压这3种电磁暂态过程的不同特点,进行仿真,并且考虑了不同的系统条件下上述3种过电压对电缆绝缘的影响。在操作过电压中,重点研究了合闸电阻对过电压的影响;而在雷电过电压中重点研究的是架空线路受雷电侵入波的过电压。仿真结果表明,海底电缆各层的结构参数对海底电缆的电磁暂态有着不同程度的影响,其中导体层、绝缘层、HDPE层对海底电缆的电磁暂态影响尤为明显。另外,海底高压电缆的护套层材料和主绝缘层材料也对电磁暂态有影响。In order to better determine the selection requirements of the high voltage submarine cable of the wind farms, the corresponding submarine cable simulation model is built using PSCAD/EMTDC software. The simulation is made for frequency overvoltage, switching overvohage and lightning overvohage with different characteristics of the transient process. Effects of the three kinds of overvohage on the cable insulation are also considered in different system conditions. For switching overvoltage, the study is focused on the influence of the closing resistance on the overvoltage, while for lightning overvohage focused on the lightning intruding to transmission lines. The simulation results show that the submarine cable structure parameters of each layer exert different impacts on the submarine cable electro-magnetic transient, and the conductor layer, insulation layer and HDPE layer have more remarkable impacts. In addition, the material of the sheath layer and the main insulation layer have impacts on the electro-magnetic transient.

关 键 词：海底高压电缆 操作过电压 雷电过电压 海上风电场 

分 类 号：TM247.1[一般工业技术—材料科学与工程]