三维工频电场,three dimension power frequency electric field (3D PFEF)
1)three dimension power frequency electric field (3D PFEF)三维工频电场
2)three dimension power frequency magnetic field (3D PFMF)三维工频磁场
3)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。
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
three dimension power frequency magnetic field (3D PFMF)三维工频磁场
3)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。
4)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。
5)3-D electric field三维电场
1.Problems in analyzing the3-D electric field of transformers were discussed.阐述了用ANSYS分析变压器三维电场时存在的问题和缺陷,通过简化变压器模型可较好的解决这一问题。
6)three dimensional electric field三维电场
1.A novel spatialthree dimensional electric field measuring system is introduced,which is composed of the sensor,the transmitter,the receiver and the signal processing unit.介绍了一种新型的空中三维电场探测系统,系统由传感器、发射机、接收机以及地面信号处理单元组成,传感器采用新型的三维电场传感器,其探测到的三维电场信号是由发射机发射,接收机接收到信号后,送到信号处理部分进行分解,识别出的电场三维信号矢量。
延伸阅读
输电线路工频电场输电线路工频电场electric field of transmission line导线的排列方式有关。图2所示为500 kV输电线路导线按水平、正三角和倒三角排列时，线下离地面lm高处横向截面内的场强分布情况。由图2可见，在导线对地面高度相同的条件下，线下最大场强及高场强范围以导线倒三角排列最小，正三角排列次之，水平排列最大。最大场强除倒三角排列时出现在中相导线下方外，其他排列一般出现在离边相导线线下外侧l~Zm处。 研抖(.)最’:巨二声父竺i。冷训\留Ll、导城水平排列导坎正三角排列导挽侧三角排列12 16幼双龙 距钱路中心口向眨离S，m (b) 图2 SOOkV输电线路三种导线排列方式 档距中央横向截面内的场强分布 (a)导线排列方式，(b)场强分布曲线输电线路电场计算愉电线下的工频电场分布可以准确计算，最常用的方法是等效电荷法。计算时，分裂导线用等效的单根导线代替，并假设电荷集中在该等效导线的中心位置，大地用一系列镜像电荷代替。根据线路电压和导线位置，先计算出单位长度导线的电荷量(用复数表示)，再由此算出空间各点场强的垂直分量和水平分量。求合成场强时，除了考虑它是相互垂直的两个矢量外，还应考虑它们之间的时间相角差，因此不能用两个矢量简单求和的办法来处理。计算时考虑架空地线和不考虑架空地线两种情况的线下场强仅相差1%~2%。为简化计算，某些情况下可以不考虑架空地线的存在。输电线路电场测t辅电线路导线下的工频电场，可用悬浮体型场强表和地面场强表来测量。离地面Zm以内的电场可只测场强的垂直分量。测量时作业人员须离被测点Zm以外，避免作业人员使被测点的电场产生畸变。同时空气的相对湿度不宜大于8。纬，避免由于支持场强表的绝缘杆表面泄漏带来的侧t误差。影响抢电线路电场强度的因紊导线对地距离、相间距离和导线排列方式对翰电线路的场强数值大小均有明显形响。增大导线对地商度，在初始时场强显著减小.高度超过20m后则减小的幅度很小。缩小相间导线水平距离对减小地面附近场强也有一些效果。导线呈三角形排列比水平排列对减小地面附近场强较为有利。至于双回路鼓形排列的线路，采用同相序布置时地面附近场强大，互逆相序布置时场强减小。但在输电线路工程建设中则要综合考虑诸多技术和经济条件，选择合理可行的设计方案。工频电场影响在工频电场作用下，因容性藕合引起的静电感应可能对人产生不同程度的电击。
