Power Transformer Winding DC Resistance Testing and Analysis 电力变压器绕组直流电阻的测试和分析
Research on Recognition Method of Power Transformer Winding Deformation 电力变压器绕组变形识别方法的研究
Design of Locomotive Power Generators Winding DC Resistance Tester 内燃机车主发电机绕组直流电阻测试仪的设计
Distortion caused by partial discharge propagation along power transformer winding 局部放电信号在电力变压器绕组传播过程中的畸变
The low voltage impulse method, frequency response analysis method and short-circuit reactance method, which can be used to measure and diagnose the deformation of power transformer winding, are introduced in the paper. 目前,监测变压器绕组变形的方法主要有低压脉冲分析法(LVI),频率响应分析法(FRA)和阻抗分析法。
Characteristics of Conductor Location-transposition in Power Transformer Winding and Analysis on it 关于电力变压器绕组导线换位的特点与分析
Based on analysis about working principle of varying load and speed of conventional three-phase induction generator excited by capacitors, the determination of excited capacitors to minimize the reactive power of control winding under variable load and speed is given. 在分析传统电容励磁的三相异步发电机变速变载运行机理的基础上,研究了变速变负载运行时控制绕组的无功容量最小化时励磁电容的取值方法。
Research on The Remote Monitoring System of the Large Power Transformer Winding Temperature Based on Web Service 基于WEB的大型电力变压器绕组温度远程监控系统研究
Axial nonlinear vibration of large power transformer winding 大型电力变压器绕组轴向非线性振动研究
It can restain harmonics by analyzing harmonics, using harmonic suppression devices and choosing power transformer winding effectively in construction of a levy. 在工程建设中有征对性的对谐波源头进行分析,利用谐波抑制装置和有效选择动力变压器接线组别能较好的抑制谐波。
Study on Thermal Performance of Natural Oil Circulation Power Transformer Winding 自然油循环电力变压器线圈冷却结构换热性能研究
A Dynamic Modification Method of Stiffness Coefficients of Large Power Transformer Winding 大型变压器绕组刚度系数的动力修改方法
Based on the analysis of the feature of the electromagnetic coupling relationship between the power winding and control winding, an equivalent circuit of a doubly-fed brushless reluctance machine is presents, which only needs frequency referring and without pole number referring. 根据两套定子绕组的电磁耦合关系特点,提出一种基于频率归算而无需进行极数归算的无刷双馈磁阻电机的等效电路。
Analysis of Influence Factors in Detecting Power Transformer Winding Deformation 电力变压器绕组变形实测中的影响因素
The paper presents an on-line algorithm for predicting the average temperature of power transformer winding according to its load current. 提出了一种根据负荷电流计算变压器绕组平均温度的实时算法,该算法涉及了负荷电流的整个历史过程和环境温度的变化。
Application of frequency response analysis method in the diagnosis of power transformer winding deformation 频率响应法在诊断绕组变形中的应用
There are two sets of different pole pairs winding in stator called power winding and control winding respectively; the types of traditional rotor are cage rotor and reluctance rotor. 其定子有两套独立绕组,分别称为功率绕组和控制绕组;传统转子类型有笼型转子和磁阻转子。
Some measures to ensure the stability of the windings is put forward and this part provides the reference for power transformer winding design. 提出了绕组稳定性的措施,为电力变压器绕组设计提供参考依据。
The experimental results indicated that the voltage regulator can through the thyristor phase shifting trigger pulse signal which controls the winding the exciting current, and makes the power winding output voltage maintenance to be stable. 实验结果表明:电压调节器能够通过晶闸管移相触发脉冲信号来控制控制绕组的励磁电流,使电机功率绕组输出电压保持稳定。
A program was written which performed a function calculation of winding transient process, and it was used to calculate the initial potential distribution and the potential gradient of the power transformers winding when the neutrals were grounded and isolated, then we obtained the weak link of insulation. 编写了计算绕组波过程的程序,并应用此程序计算出了电力变压器绕组在中性点接地和中性点绝缘时的初始电位分布和电位梯度,进而得知绕组中绝缘的薄弱环节。
On the aspect of stator windings, pitch and turns and wire gauge of two sets of winding is determined, the position of power winding and control winding is designed. 在定子绕组设计方面,确定了两套绕组的节距、匝数、线规以及功率绕组和控制绕组的位置。
A secondly winding full excitation control strategy of power winding get power from grid directly and secondly winding get power from voltage source inverter ( VSI) was proposed based on rotor flux orientation; a matlab simulation model was established, the computer simulation was carried out. 在磁场定向前提下,提出了功率绕组接电网,副绕组由电压型逆变器(VSI)供电的定子双绕组电动机副绕组全励磁控制策略,搭建了控制系统matlab仿真模型,并进行了计算机仿真。
This article describes the process of transformer winding wave case, write the Matlab-based wave power transformer winding course of the calculation process, an example calculation and verify potential gradient distribution transformer windings, the insulation margin calculation to find the weak point of insulation. 本文介绍了变压器绕组波过程的研究情况,基于Matlab编写了电力变压器绕组波过程计算程序,通过实例计算验证变压器绕组电位及其梯度分布,计算绝缘裕度找出绝缘薄弱点。
The changes in magnitude and in phase shift of the main and auxiliary phase windings currents with different run-capacitors, the current ratio and the losses of motors, and the influences on efficiency, power factor and winding temperature rising with different run-capacitors, are analyzed. 本文分析了不同运行电容时的电机主副相绕组电流大小和相位、电流比和电机损耗变化,以及调整运行电容对电机效率、功率因数、热负荷的影响。
Mechanical drive in cluster control mode is often applied to provide power for yarn winding system in past times. 传统纺织纱线卷绕系统中多采用机械传动集群控制方式提供动力,速度慢,控制效果不理想。
The flux linkage, air gap magnetic density, voltage of no-load operation and the torque capability, voltage of power winding of load operation are calculated and analyzed. 建立了二维时变场的数学模型,计算并分析了电机空载运行时的磁链、气隙磁密,电压及负载同步运行时的转矩性能,功率绕组电压等参数。
The destructive power of winding test was mainly from pure bend and destructive power from static tension was not found. 卷绕试验的破坏力主要来自于纯弯曲,静拉伸没有任何破坏力。