工频电场,power frequency electric field
1)power frequency electric field工频电场
1.Mathematical model and simulation ofpower frequency electric field on high voltage transmission lines programmed by MATLAB高压输电线附近工频电场模型及仿真研究
2.Through a new 220 kV substation during operation the electromagnetic environment around two major pollution factor -power frequency electric field,power frequency magnetic field monitoring,understanding of the surrounding environment of electromagnetic pollution levels.通过对南京新城区某新型220kV变电站运行期间周围电磁环境两个主要污染因子——工频电场、工频磁场的现场监测,了解其对周围环境产生的电磁污染水平以及通过与同地区同等级典型户外型变电站周围电磁环境监测数据的对比,分析该新型变电站对周围环境产生电磁污染水平较低的原因。
3.Based on the three-phase double-circuit overhead transmission line model,the influences of the conductor-to-ground height,the conductor sequence,numbers and spacing of the split conductors,and the diameter of the sub-conductor on thepower frequency electric field and magnetic field,the radio interference(RI),and the audible noise(AN) are analyzed.以三相双回架空线路为模型,分析了导线对地高度、相序布置、分裂导线的根数、分裂间距、分裂导线子导线直径等因素变化对工频电场、工频磁场、无线电干扰和可听噪声的影响;提出了改善线路周围电磁环境的措施;根据工频电场的限值划定线路走廊的宽度;并分别比较了大雨、湿导线和晴天时输电线路周围的无线电干扰和可听噪声。
英文短句/例句
1.Study on Power-frequency Electric Field of the 500kV Transmission and Transformation System500kV输变电系统工频电场的研究
2.Calculation of Power-Frequency Electric Fields at HV Substations by BEM采用BEM计算高压变电站工频电场
3.Simulation of Power Frequency Field Strength of Line Electrode线状电极工频电场强度仿真方法研究
4.Simulation Study of the Power Frequency Electric Field of UHV Transmission Line特高压输电线路工频电场的仿真研究
5.The Analyse and the Evaluation of the Power Frequency Electric Field and Magnetic Field Around the City;城区输变电设施工频电场与工频磁场的分析与评估
6.Impact of Corona Discharge on the Power Frequency Electric Field Intensity in the Extra-high Voltage Transmission Lines电晕放电对超高压输电线路工频电场的影响
7.Research on Suppression of Power Frequency Electric Field Due to EHV Transmission Lines超高压输电线路下工频电场抑制方法的研究
8.Study on Shielding Optimization for Power-frequency Electric Field under over Head Transmission Line架空输电线路下工频电场屏蔽优化研究
9.Mathematical model and simulation of power frequency electric field on high voltage transmission lines programmed by MATLAB高压输电线附近工频电场模型及仿真研究
10.Analysis of Power Frequency Electric Field and Radio Frequency Interference for State Grid Typical Design Transmission and Distribution Projects;国网典型设计220kV输变电工程的工频电场和无线电干扰分析
11.Study of the Effects of Power Frequency Electric Field on Enzyme Conformation and Its Activity;工频电场对酶蛋白分子构象及活性的影响
12.Research on the Influence of Power Frequency Electrical Field and Radio Interference of Ultra-High Voltage Transmission Lines upon Its Environment超高压输电线路工频电场及无线电干扰对环境的影响研究
13.Study on Magnetic Field at Power Frequency for 220kV and 110kV Underground Power Cable220kV及110kV地下电力电缆工频磁场研究
14.Analysis of Actual Measurement of Electromagnetic Environment of Substations in Chongqing Area重庆市典型变电站站场外工频电磁场实测分析
15.Electromagnetic Field Analysis under 220 kV Overhead Transmission Lines220kV架空线路工频电磁场分析
16.Three-dimension Optimization Model for Power Frequency Magnetic Field of UHV Transmission Lines特高压输电线工频磁场三维优化模型
17.Hazard in Power-frequency-electromagnetic field of 500 kV line500kV输变电线廊工频电磁场强度和危害调查分析
18.Power Frequency Magnetic Field Evaluation for the Typical Design by State Grid of 220kV Power Transmission and Distribution Projects;国网典型设计220kV输变电工程的工频磁场评估
相关短句/例句
power-frequency electric field工频电场
1.The Study of Power-frequency Electric Field under the AC 500kV Transmission lines of Sanxia Power Station Crossing over the Permanent Ship Lock;三峡电站交流500kV出线跨越永久船闸时线下工频电场分析
2.The distribution ofpower-frequency electric field under 330kV YU-Wei double circuit transmission line whieh arranges in the different-phase is measured.对330 kV禹渭线同塔双回异相序排列段线下工频电场分布进行了实测,利用实测结果对预测模型进行了校核,验证了预测模型的准确性;并预测了导线同相序、异相序和逆相序布置情况下的工频电场强度,计算了异相序、逆相序和同相序等情况下线下所有区域工频电场强度低于4 kV/m的最低线高,对采用异相序排列取得的电场抑制效果进行了分析。
3)power frequency electromagnetic field工频电磁场
1.Study on thepower frequency electromagnetic field under UHV transmission lines;特高压输电线路下方工频电磁场的研究
2.Based on the measured results of electromagnetic field of the transformer substations above 110kV level in Fujian and Zhejiang provinces,the space distribution rule ofpower frequency electromagnetic fields on and out of the boundary of various voltage level transformer substations are researched.以闽、浙两省110 kV以上等级变电所的电磁场监测结果为基础,着重研究了各电压等级变电所边界处及边界外的空间工频电磁场场强分布规律,分析和探讨了变电所外空间电磁污染的现状,为进一步开展变电所的电磁环境影响研究提出了建设性意见。
3.Theoretical analysis is conducted for thepower frequency electromagnetic field and radio interference in power transmission & distribution project.对输变电工程工频电磁场、无线电干扰进行了理论分析,指出输变电工程工频电磁场是感应场,而非辐射场。
4)power frequency electric and magnetic fields工频电磁场
1.A mathematical model ofpower frequency electric and magnetic fields under parallel multi circuit overhead lines is established.建立了同杆并架多回输电线附近工频电磁场的数学模型 ,运用计算机辅助分析软件对三相四回输电模型进行了计算 ,分析比较了线路参数变化时 ,电场强度和磁场强度的变化规
2.Especially the influence of thepower frequency electric and magnetic fields to human health is the hot topic that is discussed and researched extensively by a lot of international organizations such as IEC and CIGRE, the purpose is to concrete the actual danger of the influence, and to institute the corresponding standard.尤其是工频电磁场对人体健康的影响更是许多国际组织(如国际电工委员会,国际大电网会议等)广泛讨论和研究的课题,目的是将这种影响的实际危险具体化,并制定相应的标准。
5)power frequency electric field intensity工频电场强度
1.The monitoring results of thepower frequency electric field intensity,power frequency magnetic field intensity,radio interference and noise of sensitivity areas near the representative transformer substations and power transmission lines are analyzed emphatically.简单介绍了安徽电网的基本概况,重点分析了具有代表性变电站和输电线路附近敏感区域的工频电场强度、工频磁场强度、无线电干扰、噪声等,全面评价安徽电网环境状况,指出存在的问题,并提出了相应的建议。
2.And according the superposition principle, thepower frequency electric field intensity under the EHV transmission lines due to the corona discharge can be obtained by added the value produced by the charge in ionization region to the value generated by the transmission lines themselves.为此,在传统模拟电荷法计算工频电场强度的基础上,考虑到超高压输电线路在一定条件下产生电晕放电的实际现象,建立了一种基于此条件下工频电场计算的新模型。
6)High voltage power frequence electric field高压工频电场
延伸阅读
变电所工频电场变电所工频电场electric field of substationb一ond一onsuo gongPln dlonehong变电所工频电场(eleetrie field of substation) 变电所运行时各种带电导体上的电荷和在接地架构上感应的电荷在变电装置所处广大空间产生的工颇电场。由于变电所内带电导体纵横交错，带电设备和接地架构多种多样，变电所内的工频电场是一个复杂的三维场分布，它的表征、计算和测量较输电线路复杂。翰电线下离地Zm以内电场变化很小，可以认为是均匀的，一般可用离地1.sm处场强来表征该点电场水平。变电所内大部分区域，由于带电体和接地架构同时并存，离地Zm以内电场变化很大，为准确的表征某点电场水平，需要同时给出地面、离地0.sm和离地1.sm三个场强值。对330 kV及其以上电压等级的变电所，工频电场的限值是设计时应考虑的主要条件之一。为了预计新建变电所电场水平和分布，一般采用将变电所按一定比例缩小，所加电压也按比例缩小，用模拟的方法来预测，也可采用计算的方法。表征变电所的电场分布，可给出地面或离地面一定高度的等场强线、大于某一场强的高场强区或给出典型间隔和设备纵向或横向电场分布。变电所工作人员接近带电高压设备的机会多，场强限值除要考虑暂态电击和稳态电击外，还要考虑电场长期作用可能的生态效应。但由于变电所工作人员通常均具有防止暂态和稳态电击知识，且每天在较高电场中停留的时间不长，因此各国都将变电所内的允许工频电场定得比线路邻近居民区和跨越公路处的要高。对运行人员经常巡视或检测必经的地方，一般规定为小于8 kV/m，其他地方则不大于10 kV/m，少数地区允许最大场强为10~15kV/m。而变电所围墙处场强则不大于skV/m。为满足这些要求，除适当提商带电体对地高度外，有时还采用合理安排带电体的排列以及并列或重叠回路的相序等措施，从结构布t上减小地面电场。500 kV及以上的新变电所投运后，一般都要对变电所内电场进行一次全面测量，绘出高场强区的范围和电场分布。为避免火花放电引燃可燃气体，在变电所的工频电场区内禁止进行加人或取出汽油的作业。
