摘要
基于Deutsch假设的计算方法已被广泛应用于直流线路附近不存在建筑物时合成电场的计算。然而由于建筑物的存在会畸变直流线路产生的合成电场,因此有必要研究基于Deutsch假设的计算方法是否仍然适用。在Deutsch假设的基础上,提出了一种直流线路附近存在建筑物时合成电场的计算方法。采用优化模拟电荷法计算直流线路附近存在建筑物时的标称电场,基于Deutsch假设计算建筑物周围的合成电场,针对直流模拟试验线段,对其附近放置房屋模型时的地面及房屋模型顶部的合成电场进行计算和测试。结果表明,采用所提方法获得的地面及房屋模型顶部的合成电场及其分布规律与测量结果基本吻合,表明基于Deutsch假设的计算方法仍然适用。所提计算方法可以用于直流线路附近存在各种建筑物时合成电场的计算。
The method based on the Deutsch assumption is widely used to calculate the ionized field under HVDC transmission lines when there are not buildings nearby. But the existence of the buildings will influence the ionized field generated by the HVDC transmission lines, so it’s necessary to know that whether the method based on the Deutsch assumption can be still used in this situation. Based on the Deutsch assumption, a method to analyze the ionized field under HVDC transmission lines with buildings nearby is proposed. First, the Optimized Charge Simulation Method was used to calculate the space-charge-free electric field. Then the ionized field around the buildings was calculated based on the Deutsch assumption. Finally, We measured and calculated the ionized field on the ground surface and the top of the building model when there was a building model placed near the DC experimental line sections. The calculation results and distribution regularities of the ionized field on the ground surface and the top of the building model computed by the method basically agree with the experimental measutement results. This indicates that the method based on the Deutsch assumption is still applicable. The method can be used to calculate the ionized fields under the HVDC transmission lines with various buildings nearby.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第15期125-130,共6页
Proceedings of the CSEE
