高压交流输电线无线电干扰数值方法研究  

Numerical Methods for Radio Interference of High Voltage AC Powerline

作　　者：张建功[1] 赵军[1] 张业茂[1] 陈国强[1] 

机构地区：[1]中国电力科学研究院,湖北武汉430074

出　　处：《华北电力大学学报（自然科学版）》2018年第1期73-78,共6页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50977026)

摘　　要：输电线路的电磁环境问题随着输电线路不断升高的电压等级而变得越来越严重,其中输电线路的电晕放电形成的无线电干扰就是电磁环境的相关问题之一,输电线路的无线电干扰水平对电力线路的设计具有重要的指导作用。目前用于计算无线电干扰的主流研究方法大多有经验公式法和激发函数法,这两种方法均基于实验测量并总结试验数据归纳得到的,由于海拔、温湿度、气压等多种因素的影响,形成了形式不同的各种表达式,因此存在一定的适用条件限制。基于电晕电流的计算方法,直接应用数值计算得到的电晕电流代入激发函数法的求解过程,数值计算了架空输电线路的无线电干扰。通过与经验公式法和激发函数法的计算结果进行对比,分析了宏观上的粗糙系数以及微观上的离子迁移率,复合率对无线电干扰强度的影响。为数值分析无线电干扰提供了可选的思路。The radio interference caused by corona discharge of transmission line is one of the increasingly serious electromagnetic environment problems due to the constant rise of voltage level of transmission lines.The radio interference level of the transmission line plays an important role in the design of the power lines.At present,major research methods for calculating radio interference are empirical formula and excitation function.Based on experimental measurements and summary of the experimental data,the two methods produce many expressions with various forms due to multiple factors such as altitude,temperature and humidity,air pressure and others,which will be limited in some applicable conditions.In this paper,the method of numerical calculation is used to calculate the radio interference of overhead transmission lines by putting the calculated corona current into the solution procedure of the excitation function.By comparing the results respectively generated by empirical formula and excitation function methods,the paper analyzes the influence of macroscopic roughness coefficient and the rates of microscopic ion mobility and recombination on the radio interference intensity,which provides an alternative idea for numerical analysis of radio interference.

关 键 词：输电线路 高压交流 数值计算 无线电干扰 影响因素 

分 类 号：TN014[电子电信—物理电子学]