1) on-load tap-changer
有载分接开关
1.
Study on transformer s on-load tap-changer based on IGBT;
IGBT作为变压器有载分接开关的研究
2.
Analysis of negative current in switching tests for load tap on-load tap-changers of transformers;
变压器有载分接开关切换试验中负序电流分析
3.
The transformer accidents caused by the on-load tap-changer are arising in recent years.
近年来由有载分接开关引起的变压器故障呈现上升趋势,就一起有载分接开关引发的变压器绕组变形事故加以分析,希望能够减少类似故障的发生。
2) OLTC
有载分接开关
1.
The Program Development of OLTC Detecting System;
变压器有载分接开关检测系统的设计
2.
Analysis and Treatment of Abnormal Oil Level in OLTC of a Main Transformer;
一起主变有载分接开关油位异常的分析与处理
3.
Field Treatment and Judgement of Oil Leakage in OLTC of Transformer;
变压器有载分接开关渗漏的判别与现场处理
3) On-load tap changer (OLTC)
有载分接开关
1.
In this paper, the principle and method for the test on switching figure of on-load tap changer (OLTC) are introduced.
介绍了有载分接开关切换波形测试的意义、原理和方法,指出现场测试经常遇到的问题并分析了其原因,提出了根据现场所测波形判断有载分接开关能否正确切换的方法。
4) on load tap changer
有载分接开关
1.
Combining with his working practice,the author states several representative malfunction of transformer on load tap changer,analyzes their causations and puts forwards treatment measures,which can provide reference for maintaining of middle and small power station and transformer equipment.
作者结合工作实践,论述了变压器有载分接开关几种典型的故障原因及处理方法,对于中小型电站及输变电设备维护有一定的借鉴作用。
2.
To the scheme of mechanical on load tap changer combined with thyristors, its characteristic of arc suppression is analyzed in details, and a corrected scheme is then present.
分析了晶闸管与机械开关相结合的无弧有载分接开关的灭弧机理和灭弧特性 ,论述了晶闸管控制串联调压变压器的工作原理和调压性能。
5) on-load tap changer
有载分接开关
1.
The principle,con st ruction and control/protection system of thyristor on-load tap changer are intro duced,and its future of development is viewed.
介绍了一种晶闸管有载分接开关的运行原理、结构组成及其控制保护,展望了该种分接开关的发展前景。
6) load current tap changer
有载分接头切换装置，有载分接开关
补充资料：星接阻抗和三角接阻抗的变换
星接阻抗和三角接阻抗的变换
transformation between starc-onnected and delta-connected impedances
x ing]一e乙日kongl介e sonJ一00}Iez日伙ongde匕一。一〕huon星接阻抗和三角接阻抗的变换(t ransfor-mation betweenstar一eonneeted and delta-eonneeted imPedanees)接成星形的三个阻抗和接成三角形的三个阻抗互相替代的等效变换。它们之间的关系可用一组变换公式表示。按这组公式，用星接阻抗替换三角接阻抗或者反过来，不会影响稳态下电路其他部分的正弦电压和电流，常用于对称三相电路的分析和计算。 图1为三个阻抗21、Z:、23接成星形(又称丫形)。图2为三个阻抗Z小22。、Zal接成三角形(又称△形)。它们之间的变换公式如下:人23土图1星接阻抗图2三角接阻抗(1)将星形连接变换成三角形连接212一Z:+22+2 122及3一22+za十警(1)、|冬|矛231一23+21+2321(2)将三角形连接变换成星形连接z、-二一典乒兴-) 艺‘2士乙“3十乙31…_2 oqZI，}Z。一下万~一二-二二-汁 乙‘2士乙23十乙3‘1_Z。IZoq}艺q一二二一~二，二二--，-二二-~J 乙12十乙23十艺32夕(2) 当三个星接阻抗相等，即21一Z:一23一z丫、三个三角接阻抗相等即212一223一231一Z△时，变换公式是 Z二一32丫，Z丫一Z△/3
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条