【作者】 王晓燕；

【导师】 赵建国；

【作者基本信息】 山东大学 ， 电力系统及其自动化， 2011， 博士

【摘要】 掘估计未来15-20年我国电力需求仍呈现增长趋势,为满足电力供应,我国在大力开发水电和火电的同时将建设以特高压为骨干的全国能源传输通道。本论文以特高压输电工程为背景,从特高压交流试验示范工程线路架设方式入手,分别研究了常规架设方式、平行架设方式、交叉跨越架设方式下,线路电磁环境特参数的计算模型、影响因素,并结合电晕笼试验研究无线电干扰和可听噪声特性,给出了相关结论。具体内容如下：1、特高压交流试验示范工程输电线路电磁环境分析。对特高压交流试验示范工程输电线路电磁环境参数进行模型建立和线路测量工作,通过对比计算结果与测量数据分析影响电磁环境四个特征参数——工频电场、工频磁场、无线电干扰和可听噪声的各种因素,提出改善电磁环境的方法。2、特高压输电线路平行架设方式下输电线路电磁环境特征参数模型建立和计算工作。结合工程需要,建立平行架设方式下输电线路电磁环境特征参数计算模型,利用模型分析影响电磁环境参数的各种因素,提出改善平行架设方式输电线路电磁环境的方法。3、特高压输电线路交叉跨越方式下输电线路电磁环境特征参数模型建立、计算和测量工作。结合工程实际,建立三维空间输电线路电磁环境特征参数计算模型,完成特高压输电线路和超高压输电线路交叉跨越区域线路的测量,利用模型分析影响电磁环境参数的各种因素,提出改善交叉跨越方式下输电线路电磁环境的方法。4、利用电晕笼研究不同结构、不同型号导线产生的无线电干扰和可听噪声特性。利用双层电晕笼完成新型导线和常用绞线的无线电干扰、可听噪声对比试验,总结导线表面状况对导线产生的无线电干扰和可听噪声的影响。利用我国特高压交流试验基地环境气候室和单层电晕笼,完成海拔高度0-4000m范围内的导线无线电干扰试验,提出不同海拔高度条件下的无线电干扰起晕特性。更多还原

【Abstract】 It is estimated that power requirement in our country tends to increase in the following15-20 years.To satisfy the electricity supply, hydropower and thermal power will be built as well as ultra-high voltage transmission lines used for power supply channel. In this paper, electromagnetic environment characteristics models of UHV power transmission project are elaborated depended on construction methods. Calcultion model of parallel transmission lines and cross transmission lines are established to analyze factors that can influence electromagnetic environment of transmission lines. Mesanwhile, conclusions of corona cage test of radio interference and audible noise are introduced. Main works are as follows:1. Demonstration on electromagnetic environment of UHV AC transmission lines. Four electromagnetic environment parameters - power frequency electric field, power frequency magnetic field, radio interference and audible noise models of UHV AC transmission project are constructed. Calculation results which are deduced by these models are compared with test results. Factors which can influence the electromagnetic environment of UHV AC transmission lines are presened and methods which can relieve the electromagnetic environment problems are illustrated.2. Models of parallel UHV AC transmission lines are set up in this paper. To fulfill the UHV project design, various factors which could affect the distribution of electromagnetic environment parameters are discussed. Methods which can relieve the electromagnetic environment problems of parallel UHV AC transmission lines are illustrated.3. To evaluate the electromagnetic environment level of cross UHV AC transmission lines, three-dimensional transmission line models are set up in this paper which are uesd to execute the cross region of UHV transmission line and EHV transmission lines.Various factors which could affect the distribution of electromagnetic environment parameters are discussed. Methods which can relieve the electromagnetic environment problems of cross UHV AC transmission lines are illustrated.4. Corona cages test of radio interference and audible noise is carried on according to different structures, different structures bunbles. Comparison test on stranded wires and patten wires on basis of UHV corona cage are completed, conclusion on radio interference and audible noise experiment are summarized. Radio interference test are completed in climate laboratory with modible corona cage to summarize altitude calibration from 0m to 4000m.更多还原