输电线路导线分裂对工频电场分布的影响  

Influence of Bundled Conductors on Power Frequency Electric Field under Transmission Lines

作　　者：江浩田 唐波[1] 孙睿[1] 刘任[1] 吴卓[1] 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《电气开关》2016年第4期63-67,72,共6页Electric Switchgear

摘　　要：国家标准对输电线路的电场求解算法进行了规定,但是没有考虑实际导线分裂的情况,仅仅用等效导线来代替实际分裂情况。采用国际大电网会议的推荐算法模拟电荷法,提出了考虑导线分裂情况下的电场强度求解算法。以实际输电线路中采用的典型铁塔数学模型作为算例进行计算,分析了实际分裂情况和等效导线情况下两种计算结果,提出考虑实际分裂情况下的计算结果比等效导线情况下的计算结果更接近实际电场值,适合我国在进行特高压输电线路设计和电场环境研究时使用。以实际分裂情况和等效导线情况计算500k V输电线路,按实际分裂情况计算得到的电场强度要高于等效导线情况下的电场强度,两者的差值最大可以达到2.8k V/m。Calculation of power frequency electric field under transmission line has been specified by National standards. However, it lacks consideration of the actual situation of the bundled conductor. It is only with an equivalent conductor instead of the actual bundled situation. Based on the calculation method-charge simulation method-proposed by CIGRE, the algorithm of calculating electric field intensity is proposed in case of the real situation of bundled conductor. Taking the mathematical model of a typical tower in a real transmission line used in the calculation as an example, the two computing results which are under the situation of the actual bundled conductor and the situation of the equivalent conductor are analyzed. And the result considering the case of the actual bundled conductor is closer than the case of the equivalent conductor to the practical electric field value. It is suitable to use this during the design of UHV transmission line and the researching of electric field environment. The electric field intensity of the 500kV transmission line is calcu- lated in case of the actual bundled conductor and the calculated with actual bundled conductor is more than two situations can reach 2. 8kV/m. equivalent conductor. The result shows that the electric field value that of equivalent conductor. The maximum difference between the

关 键 词：输电线路 工频电场 模拟电荷法 分裂导线 等效导线 

分 类 号：TM72[电气工程—电力系统及自动化]