特高压紧凑型线路复合绝缘子电场计算有限元模型的简化

Simplification of finite element model for composite insulator electric field calculation of UHV compact transmission line

特高压紧凑型输电线路具有电压等级高、三相金具布置在同一塔窗内的特点,且紧凑型杆塔尺寸差异大、结构复杂等原因进一步增加了有限元计算模型的复杂度,造成了有限元计算中消耗时间长、存储容量大的问题.根据项目工程初设建立了特高压紧凑型线路完整和简化后的有限元模型,详细分析了导线、塔窗、金具和复合绝缘子串对计算结果的影响,证明了简化模型的合理性.

The ultra high voltage(UHV) compact transmission lines have a high voltage;and its three-phase hardware layout within the same tower windows;the compact tower has large different sizes and complicated structure, which increase the complexity of the model, so as to take long time in the finite element calculation;and it is reguired more storage space. The UHV compact transmission lines 3 D accurately model and the simplified finite element model are presented in this paper. The paper analyzes the wires, tower, hardware and composite insulator string based on the results of calculation and puts forward effective simplified model on the premise of guarantee calculation precision, so as to improve the computational efficiency.