接地网,grounding grid
1)grounding grid接地网
1.Optimization of substationgrounding grid design based on genetic algorithm;基于遗传算法的变电站接地网优化
2.Practicality analysis for optimized erosion diagnosis of large and grid medium-scalegrounding grid;大中型接地网腐蚀优化诊断实用化分析
3.Measurement instrument based on embedded system forgrounding grid;基于嵌入式系统的接地网测量装置
英文短句/例句
1.Numerical Calculation and Measurement of Parameters of Large Gronding Grids in Industry Frequency;大型接地网工频接地参数的计算和测量
2.Grounding resistance measurement method of large grounding grids with short current wire缩短测量引线测量大型接地网接地电阻的方法
3.Error Analysis and Countermeasure for Large Grounding Grid Resistance Measurement大型接地网接地电阻测量误差分析和对策
4.The Applications of Nonmetal Module to Ground Grid of Substations非金属接地模块在变电站接地网中的应用
5.Study on Electrical Character of Grounding Grids in Non-Uniform Soil Regions;复杂土壤地区接地网电气特性的研究
6.Statistic and Analysis of Grounding Grid Census Results about Shanxi Power Grid in 山西电网接地网普查结果统计与分析
7.interface-interpretable station address接口译码站地址 -网络
8.Three-phase three-wire winding, delta or meshed connection, ungrounded or grounded.三相三线绕组, 三角形或网状连接, 接地或不接地。
9.Study on Method of Grounding Resistance Measurement with Short Electrode Wire and DC Grounding;地网接地电阻短距测量方法和直流接地研究
10.Research on Internet Contact Habits of Senior Netizens in Beijing北京地区老年网民网络媒体接触研究
11.Discussion on the Construction of Local Transmission Network and Access Network of CDMA Network关于CDMA网络本地传输网、接入网建设的探讨
12.Link to a page location or local file链接到的网页地址或本地文件
13.Three-phase three-wire winding, delta or meshed connection. Ungrounded or grounded can be specified.三相三线绕组，三角形或网状连接。可指定不接地或接地。
14.Study on the achieving plan of commercial internet access to the broadband LAN;商业驻地网接入宽带城域网的实现方案探讨
15.To meet the impact of the network culture and buildthe front of ideological education on web;迎接网络文化的冲击 建设网上思想教育阵地
16.The network connection was gracefully closed.网络连接已被适当地关闭了。
17.local line network with link circuit带有链接电路的本地线路网
18.The network connection was aborted by the local system.由本地系统终止网络连接。
相关短句/例句
grounding grids接地网
1.Topology dividing algorithm ofgrounding grids corrosion diagnosis;接地网故障诊断中的拓扑分解及其应用研究
2.A Monte-Carlo based on testability analysis ofgrounding grids corrosion diagnosis;基于蒙特卡罗的接地网故障诊断可测性分析
3)grounding network接地网
1.The analyses about effect of substationgrounding network for relay protection equipment;变电站接地网对继电保护等设备的影响分析
2.Through the specific application of conductive concrete ingrounding network reconstruction project, it showed that conductive concrete is extremely effective to reduce the frequency grounding resistance for the high soil resistivity areas.通过对导电混凝土在白沙水电站接地网改造工程中的具体应用。
3.Four methods for transient performance analysis of substationgrounding network, i.介绍了用于变电站接地网暂态分析的4种方法:电路法、电磁场法、场路结合法和传输线模型法,分析了各方法的基本原理、适用的工程条件、需要解决的问题和发展方向。
4)ground grid接地网
1.Technical retrofit ofground grid for 500 kV Lanting Substation;500kV兰亭变电所接地网的技术改造
2.Sweep signal generator based on LabVIEW for detecting substationground grid state变电站接地网状态检测用虚拟扫频信号发生器
3.The boundary element method has been improved to calculate the parameters of complexground grid and a numerical calculation program with high accuracy,high speed and less memory for optimization of grid design has been obtained.复合接地网接地电阻、跨步电势、接触电势等参数可用边界元方法计算，经适当改善，其计算速度快、精度高、占用计算机内存少，是工程接地设计和施工的较理想的计算方法。
5)grounding net接地网
1.Corrosion and protection ofgrounding net in electric power system;电力接地网腐蚀与防护技术的进展
2.Discussion on potential distribution ofgrounding net under short circuit failure;短路故障下接地网电位分布的讨论
3.A Technical Research on 220KV Substation Grounding Net Reconstruction;220KV接地网改造的技术问题研究
6)ground net接地网
1.If conventional horizontalground net is applied,its ground resistance value can not meet the standard.沙塘湾110kV变电站所区的平均土壤电阻率过高,采用常规水平接地网方案时,其接地电阻值远不能达到标准的要求。
2.This paper introduces the principle,design project and technical request of the Huiiong power stationground net reconstruction project by using deep-hole-earthing technology.本文介绍了回龙电站采用深孔接地技术改造接地网的原理、设计方案和施工技术要求。
3.The connection of theground net conductor of substation requires steady and reliable,which seems even more important in the copperground net.变电站接地网导体的连接要求稳定可靠,在铜接地网中显得更为重要,本文通过对火泥熔接的介绍,结合工程实例阐明了火泥熔接的特性及优点,并指出材料截面选择的合理性。
延伸阅读
电力系统中性点接地变压器接地电力系统中性点接地变压器接地earthing transformer for neutral groundingd旧n]一x .tong之hongx旧gd一onj旧d一b旧nyoq一j旧d-电力系统中性点接地变压器接地(earthingtransformer for neutral grounding)电力系统中利用接地变压器获得中性点与大地连接，也称中性点辅助变压器接地。当系统中的变压器不具备接人电阻器或接地故障消除器的条件(例如变压器三相绕组为△接线或虽为Y接线但容量不符合要求)时，要利用辅助的变压器提供一个用于接地的中性点。这种变压器应具备零序阻抗低、激磁阻抗大、功率损耗小的特性。绕组为曲折(Z)接线的变压器符合要求，如图1(a)所示。它可以带二次侧绕组，也可以只有一次侧绕组。这种变压器每相由匝数相等的两个串联分绕组组成，每个磁芯上的两个分绕组间以及它们对二次侧绕组的零序互磁为零。很明显，这种变压器的零序电抗XTo只为变压器一次侧绕组的漏电抗Xs，，即XTo-Xs;，而系统中性点与地之间的计算阻抗Z。为Z。一25，+Z。，其中Z。为中性点电阻器或电抗器的阻抗。见图1(b)。2.为激磁阻抗。见图2，YN，d接线的变压器二次侧绕组可以带一定负荷。从过负荷能力考虑已经知道.接YN，d接线的双绕组变压器中性点的接地设备的容t不应超过变压器额定容t的50%.由此可认为，当变压器额定容t按中性点接地设备的容t设计时，允许二次侧绕组带50%额定容t的负荷.还有一种特殊接线的接地变压器和接地设备的组合，是19鲍赫(R.Bauch)发明的，故也称饱鹅变压器，见图3。变压器一次侧中性点直接接地，开口三角形接线的二次侧连接接地设备，这与一次侧中性点接有接地设备是等效的。单相接地时，不对称的电压可分解为对称的正序和零序，磁通也可分解为对应的分量。磁通人m、人。、人.需要极小的激磁电流，并对应于正序电压U.。、U、。、U。。，零序电压UO.对各相是一样的，故三个磁柱中有相同的磁通式，对零序磁通来说，变压器相当一个单相变压器，只不过分裂为3个磁柱和3个绕组，见图3(c)。单相接地时，这种变压器每个分绕组上的电压为少尹z‘一.哟.!|||一下咖l!补丰气l一!{屯犷!{屯享!孟=zl息)一刃川l|拍--l--﹄·图1绕组为曲折(Z)接线的变压器 (a)接线图.(b)零序阻抗图会‘价“相“压，·““”的““是中”点接地“备电流的1/3，即夸。因而变压器的额定功率为3x2‘会‘争即中性点接地设备“率”1.15倍。
