1) equivalent short circuit im pedance
等效短路阻抗
2) equivalent cir-cuits
等效电路短路阻抗
3) short circuit impedance
短路阻抗
1.
The performance parameter of mining flameproof dry type transformers are adjusted in newly implementing standard,the academic analysis and calculation of short circuit impedance for transformer are processed.
根据新实施标准对隔爆型干式变压器性能参数进行调整,对其变压器的短路阻抗进行了理论分析和计算,并给出了矿用隔爆型干式变压器的短路阻抗值。
2.
This paper analyzed the requirements of short circuit impedance for distribution transformer in national standard, put forward a method to test the capacity of transformer with short circuit impedance and developed the measuring device.
文中分析了国家标准中规定的配电变压器短路阻抗的要求,提出了利用变压器短路阻抗来测试变压器实际容量的方法,并研制了相关测试装置。
3.
When transformer gets short circuit impact,through short circuit impedance test and winding deformation test can detect whether the impacted transformer distorted,when the deformation has happened,can detect single phase leakage impedance of transformer to judge the appe.
短路阻抗是变压器的一个重要特性参数,决定了变压器在系统短路时短路电流的大小及变压器内部的电动力的大小。
4) short-circuit impedance
短路阻抗
1.
The requirements of distribution transformer short impedance in national specifications were analyzed and transformer short-circuit impedance was used to test the capacity of transformer.
分析了国家标准中规定的配电变压器短路阻抗的要求,提出了利用变压器短路阻抗来测试变压器的实际容量,测试结果显示,判别变压器容量的准确率为100%,为供电部门查找窃电提供了有力工具。
2.
In order to calculate the short-circuit impedance of the transformer with split types of windings exactly,the multi-winding inductance matrix(IM) for the multi-branch of the high-voltage winding and one of the low-voltage split winding was first established by three-dimensional finite element method(FEM) with ANSYS software.
为准确计算出分裂变压器高、低压绕组间的短路阻抗,首先采用ANSYS的三维静态磁标势法数值计算得出高压多并联支路与单个低压绕组间的多绕组电感矩阵,并依据电路理论将其简化为等效双绕组电感矩阵,进而得到短路阻抗百分比,并推导了高压各并联支路电流分配,最后给出一个概念设计的分裂式高温超导变压器算例。
3.
The impedance voltage and short-circuit impedance of transformer is calculated based on the analysis of distribution of leakage field.
为提高短路阻抗计算精度,采用“磁场—电路”耦合法建立了电力变压器2D轴对称磁场有限元模型以方便得到输入、输出间的对应关系。
5) short impedance
短路阻抗
1.
This paper analyzes the require of distribution transformer short impedance in national standard and puts forward a method to test the capacity of transformer with steady impedance voltage.
本文深入分析了国家标准中规定的配电变压器短路阻抗的要求,提出了利用变压器短路阻抗来测试变压器的实际容量,测试结果显示,判别变压器容量的准确率为100%,可以为供电部门查找窃电提供有力工具。
6) Equivalent impedance
等效阻抗
1.
The results of calculated equivalent impedance was agree with measured.
文中采用感应电动势(EMF)方法,给出了二极管栅格阵列的单元等效电路,计算出等效阻抗。
2.
The equivalent impedances of inductor and capacitor in transient response were deduced from the exponential transient solution and the volt ampere relation of these elements.
利用暂态响应解的形式和电感、电容的电压与电流的关系 ,导出了电感和电容的等效阻抗 ,从而可用电路方法求解动态电路的暂态过
3.
The equivalent impedance of floating-ring bearing which considering the mass of floating-ring is deduced.
从浮环动静压轴承相互作用的力学模型出发,推导出了考虑浮环质量时浮环动静压轴承的等效阻抗,在此基础上,建立了利用等效阻抗法分析浮环轴承稳定性的理论依据,并给出了算例。
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