单线图单线图是用一条线来表示三相电力分布系统的示意。
It is understood when using this easy to read drawing that one line represents three.
介绍了小型三相电力变压器线圈短路故障查找的方法和试验时的注意事项。
This paper introduces the trouble shooting methods for the coil short of miniature three-phase power transformer, and points out some notable matters in the test.
首先，本文对三相电力变压器空载损耗、负载损耗在线检测理论进行了讨论和分析。
Firstly, this paper shows a method to detective the open circuit loss and the load loss of the there-phase power transformer online by operating the real-time voltage and current of the transformer.
利用有限元算法分析了三相电力变压器绕组各线匝在不同运行模式下电动力引起振动。
Based on finite element method (FEM), the vibration of power transformer windings caused by electrodynamic force is analyzed.
检测三相电力参数、实时监控电网运行状态对实现电网安全、高效、经济运行非常重要。
To realize safe, high efficient, economic operation of power grid, it is important to detect three phase electrical parameter and real-time monitor operating condition of power grid.
介绍了一种以arm微处理器和单相电能计量芯片CS5460A为核心的电能校验仪，可以完成三相电力参数的检测，并能对其它电能表进行精度检测。
An energy calibration instrument based on the chip CS5460A and ARM MPU is proposed in this paper. It can measure three-phase electric parameters, and detect the precision of other instruments.
主电力是由两个发动机驱动发电机供应三相，115伏400周期交流电。
Primary electrical power is provided by two engine driven generators which supply three-phase, 115 volt 400 cycle alternating current.
以基波潮流和谐波潮流的解耦性为基础，提出了一种将电力系统三相不对称基波潮流和谐波潮流分离迭代的计算方法。
Based on the decoupling of fundamental power flow and harmonic power flow, a separate iteration method for calculating three-phase asymmetrical harmonic power flow in power system is presented.
本文根据正弦函数的正交特性，提出了一种既适用于单相也适用于三相有源电力滤波器的广义无功电流检测方法。
In this paper, based on the orthogonality of sine function, a detection approach of generalized reactive current suitable for both the single phase and three phase active power filters is presented.
本文介绍了在实现三相四线制有源电力滤波器时所采用的两种不同的主电路结构及其控制方法。
In this paper, two types of main power circuits and their control methods are introduced when constructing active power filter in three phase four wire system.
特别是三相四线制有源电力滤波器硬件结构简单，只有三组开关器件。
Especially three-phase four-wire active power filter hardware has simple structure with only three group switch device.
提出了一种新型三相航空有源电力滤波器的控制方法。
A new control method for the three-phase aeronautical active power filter was proposed.
介绍了三相三线制混合型有源电力滤波器在变频调速电动机谐波治理和无功补偿方面的运行情况。
The operating status of three-phase three-wire HAPF(Hybrid Active Power Filter) in harmonic suppression and reactive power compensation for variable-frequency motor are introduced.
介绍了一种基于DSP的三相四线制系统混合型电力滤波装置。
A new DSP based hybrid power filter designed under the condition of three-phase four-wire system is presented.
三相变四相电力变压器是一种新型平衡变压器，由此可以实现四相输电方式，也可以用于电气化铁道的AT供电方式。
The transformer may be applicable to either four- phase transmission system or AT power supply system in electric railways.
使用相分量方法在分析电力系统三相不对称网络时更加方便。
Phase components method may offer advantages in the analysis of unbalanced three-phase networks.
三相干式变压器结构简单、使用方便、容易维修，在工厂中得到广泛应用，在电力拖动控制系统中要根据实际需要进行选择。
Three-phase dry type transformers are featured by simple construction, easy use and convenient maintenance and used as required by electrical drive systems.
本文主要论述了电力系统中母线上发生三相对称短路时，其动稳定和热稳定的校验问题。
This paper discusses the short-circuit verifying of wires in dynamic stability and heat withstand while the wires are chosen in the design of power system.
提出了一种基于综合相量幅值和相位变化规律实时测量电力系统振荡中振荡频率及瞬时频率的算法，利用三相电流经相应变换获得综合相量。
An algorithm based on the magnitude and phase Angle of the generalized phasor to measure instantaneous frequency and swing frequency while the power swing occurred is presented.
主要介绍用于三相四线制的有源电力滤波装置的研究工作，给出了系统的基本补偿原理、主电路及控制电路结构，并利用该装置进行了补偿实验。
This paper introduces an active power filter device used for three phase four wire. The compensation principle and structure of main circuit and control circuit are given.
提出一种基于三相电能专用计量芯片的设计方案，实现对系统所需要的电力参数进行实时、准确及快速的计量，提高了整个控制系统的性能。
Based on the special power measurement chip, real-time, accurate and quick measurement of electric parameters is realized and the performance of the control system is improved.
另外，三相四线制有源电力滤波器能有效地抑制零线电流，并能有效地解决系统的不对称问题。
Moreover, three-phase four-wire active filters can suppress zero line current, and solve symmetric problem of system effectively.
电力系统无功功率补偿不足会引起功率因数下降，而三相功率不平衡则会影响到用电设备的安全。
The power factor of power system will be decreased by under-compensation of reactive power and it is harmful for the devices of customers while the power in the three phases are unbalanced.
推导了电力系统电磁暂态仿真软件EMTDC中的三相异步电动机模型，介绍了电动机暂态过程的求解算法。
The three-phase asynchronous induction motor models in EMTDC are deduced and the solution algorithms of induction motor transient process are introduced.
通过构造一个虚拟的三相对称系统，该检测方法可以推广到单相电力系统的谐波电流检测。
The single-phase harmonic current components can also be detected by the method effectively through constructing a dummy symmetry three-phase power system.
本文在基于MATLAB的SIMULINK为三相并联型电力有源谐波补偿系统建立了一个包括各个子系统在内的整体仿真模型。
The paper builds an integrated simulation model including respective subsystems for three phase shunt power active harmonic compensation system based on SIMULINK function of MATLAB.
由于中大功率的电力电子设备在电网中占很大的比重，因此高功率因数的三相可逆变流器的研究已成为当今国内外研究的一大热点。
Due to the prodigious proportion of medium and big electronic equipment in power line, the research of three phase reversible converter is becoming the researching hotpot on international and native.
介绍了三相油浸式电力变压器铁心铁轭的绑扎方式及其优缺点，并对常见的拉紧装置作了简要分析。
The binding methods of yokes in three-phase power transformer cores and their merits and demerits are introduced. The general tightening device is analyzed briefly.
介绍了由晶闸管投切滤波器和有源滤波器组合构成的一种三相混合电力滤波器。
In this paper, a three phase hybrid power filter composed of a Thyristor Switched filter (TSF) and an Active power filter (APF) is introduced.
介绍了由晶闸管投切滤波器和有源滤波器组合构成的一种三相混合电力滤波器。
In this paper, a three phase hybrid power filter composed of a Thyristor Switched filter (TSF) and an Active power filter (APF) is introduced.
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