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变压器中性点直流 transformer neutral direct current英语短句 例句大全

时间:2021-05-28 18:28:08

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变压器中性点直流 transformer neutral direct current英语短句 例句大全

变压器中性点直流,transformer neutral direct current

1)transformer neutral direct current变压器中性点直流

英文短句/例句

1.Application of a Series Capacitor Based Transformer Neutral DC Current Blocking Device基于串联电容法的变压器中性点直流电流抑制装置

2.Several Measures for Suppressing Direct Current in Neutral Point of Main Transformer抑制主变压器中性点入地直流电流的几种措施

3.The neutral point potential balance is one of the key aspects that affect the reliability of3- level inverter and it"s timing system.三电平逆变器中直流侧中点电容电压平衡问题直接影响着逆变器及其电机调速系统的可靠性。

4.neutral autotransformer中性点接地自耦变压器

5.A Novel Direction Element Based on Transformer Neutral Zero Sequence Current基于变压器中性点零序电流的方向元件

6.The Nonlinear and Variable Structure Control of Converts in HVDC System;高压直流输电系统中换流器的非线性变结构控制

7.frequency-DC voltage converter频率-直流电压变换器

8.Sensorless BLDC Drive Allowing for Neutral Point Voltage计及中性点电压的无刷直流电机无位置传感器控制

9.Improvement of Overvoltage Protection of 110kV Transformer Neutral Point110kV变压器中性点过电压保护的完善

10.Research on DC-biasing in HVDC Power Transmission;高压直流输电过程中变压器直流偏磁现象的研究

11.Design of DC High-Voltage Generator with Polarity Being Reversal for Convertor Transformer Test;换流变压器试验研究用极性可反转直流高压发生器的研制

12.Novel Converter Transformer Application in Current DC Power System of Mine新型换流变压器在矿山直流供电系统中的应用

13.Appalication of Small Reactor Connected to Neutral of 500kV Transformer500kV变压器中性点串接小电抗器的应用

14.Direct current cannot use transformers to change voltage.直流电就不能用变压器来改变电压。

15.Limitations of 3-channel Method to Measure Transformer DC Resistance三通道法测量变压器直流电阻的局限性

16.Research on DC/DC Converter for HVDC Power System;高压直流电源系统中DC/DC变换器的研究

17.Suppression of Core Saturation Instability in Converter Transformer for UHVDC Power Transmission System From Yunnan to Guangdong云广特高压直流输电系统中换流变压器铁心饱和不稳定的抑制

18.Influence of converter transformer differential protection by harmonic in HVDC transmission system高压直流输电中谐波对换流变压器差动保护的影响

相关短句/例句

transformer neutral DC current变压器中性点直流电流

3)transformer neutral DC current blocking device变压器中性点直流电流抑制装置

1.The scheme of adopting the capacitor connected in series with transformer neutral to block DC current is used to thetransformer neutral DC current blocking device for No.潖江变1号变压器中性点直流电流抑制装置采用在变压器中性点串联电容器阻断直流电流的方案,且电容器并联了由快速开关、整流桥、大功率晶闸管、过电压触发单元、快速脱扣回路等组成的快速旁路系统。

4)transformer neutral变压器中性点

1.To solve the problems of the inherent defects of inaccurate distance regulation and unstable flashover voltage for the current separately installed rod-rod gap for 110 kV and 220 kVtransformer neutral protection, a new composite gap is developed, which is supported by the composite insulators, and the electrodes in the horn form at high and low voltages are bond on these insulators.为解决目前110、220kV变压器中性点保护用棒-棒间隙电极分体装设时存在距离调节不准、放电电压不稳定等固有缺陷,研制了一种新型复合间隙。

5)transformer neutrals变压器中性点

1.The calculation results of DC currents throughtransformer neutrals of HVDC system operated in monopole-ground return mode with the influence of sea considered are evidently different from those calculated by terrestrial soil model.考虑海洋影响的直流输电单极大地运行时变压器中性点流过的直流电流与陆地土壤模型计算的结果有很大不同。

6)transformer neutral point变压器中性点

1.Holding that there exists to a certain extent coupling between DC and AC earth electrodes,the authors analyze the transformer DC magnetic biasing in the grid,and present the network algorithm for the DC component oftransformer neutral point.为此,以直流接地极与交流接地极存在一定强度耦合的观点分析了电网变压器直流偏磁事例,在此基础上提出变压器中性点直流分量的网络算法。

2.By analyzing the phase\"s relationship between transformer neutral zero sequence current and zero sequence current of the protection,a novel direction element based on zero sequence current of thetransformer neutral point is proposed to overcome the above shortcoming.针对这一缺陷,通过分析变压器中性点零序电流和保护零序电流的相位关系,提出一种基于变压器中性点零序电流的方向元件。

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。

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