架空线路电磁散射的混合建模快速算法

发布时间：2018-01-12 13:30

本文关键词：架空线路电磁散射的混合建模快速算法　出处：《高电压技术》2015年12期 　论文类型：期刊论文

【摘要】：由于输电线路电磁散射的分析对象是杆塔阵列与架空线复合的金属结构,目前的方法都是将杆塔和架空线作为整体,应用矩量法开展计算,这样形成的矩阵规模庞大,计算耗时冗长,甚至可能无法计算。为此提出了"矩量法+多导体传输线混合算法"的思路建立整个架空线路,分析了杆塔和传输线的全耦合、半耦合、无耦合等情况下的处理方式,最后通过具体算例比较了采用全矩量法和"矩量法+多导体传输线混合算法"的计算量、存储量及计算精度。研究表明,利用近距离耦合模型在30 MHz时,与精确解的差异不超过2%;利用连接耦合模型,在低于10 MHz的情况下,与精确解差异不超过5%。
[Abstract]:Because the analysis object of transmission line electromagnetic scattering is the metal structure which is composed of tower array and overhead wire, the current methods are to take the tower and overhead wire as a whole, and apply the method of moment to carry out the calculation. The matrix formed in this way is large in scale, time-consuming in calculation, and may not even be able to be calculated. Therefore, the idea of "hybrid algorithm of mom multi-conductor transmission lines" is proposed to establish the whole overhead transmission line. In this paper, the full coupling, half coupling and no coupling of tower and transmission line are analyzed. At last, the calculation amount of the method of full moment and the mixed algorithm of multiconductor transmission line using the method of moment is compared by a concrete example. Storage capacity and calculation accuracy. The results show that the difference between the model and the exact solution is not more than 2 when the close-coupled model is used for 30 MHz. In the case of less than 10 MHz, the difference between the coupling model and the exact solution is not more than 5%.
【作者单位】：中国电力科学研究院;华北电力大学新能源电力系统国家重点实验室;
【基金】：国家电网公司科技攻关团队项目(SG11017)~~
【分类号】：TM75
【正文快照】： 0引言1基于严格理论模型的积分方程方法—矩量法(MOM),具有求解收敛速度快,计算结果精度高的优点,在输电线路电磁散射分析中得到了广泛应用[1-4],其计算原理、基函数和权函数选取、矩阵求解已在相关文献中详细阐述[5-8],中国电力科学研究院也应用这一方法对电磁散射的计算进行

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