电力变压器

Meanwhile, by means of generalized transform method, its two-phase equivalent circuit, impedance transformation and nodal admittance matrix in phase coordinates are given in order to analyze and calculate the problems related to the terminals connecting power grid with traction power network.

同时借助端口电气量的一般变换方法，给出了YNvd接线变压器两相等值电路、阻抗变换以及相坐标下的节点导纳矩阵，以便分析和计算与电力系统和牵引网端口有关的问题。

In electric system, conventionally it is adopted that a generatrix is connected with a transformer in low pressure system due to limitation of the capacity of switch and operation mode.

在电力系统中，由于开关容量及运行方式限制，通常在低压系统中多采用 1段母线、1台变压器运行方式。

Switching operations of disconnectors or circuit breakers in Gas Insulated Substation may generate very fast transient overvoltages, which are heinously detrimental to transformer and other power equipment.

摘 要：气体绝缘变电站中隔离开关等操作会产生特快速暂态过电压，这种过电压会对变压器等电力设备造成极大的危害。

It is very important to find incipient faults as early as possible.

及时查找变压器的潜伏性故障是电力部门关注的一项重要课题。

Plenty of power throughout the county, now has a 220 kilovolt substation 9, 110-kilovolt line 87 km, 85 km line of 35 KV, 10 KV lines 1063 kilometers, Taiwan, 3393 distribution transformers with a total capacity of 230,000 KVA.

全县电力充沛，现拥有220千伏变电站9座，110千伏线路87公里，35千伏线路85公里，10千伏线路1063公里，配电变压器3393台，总容量23万千伏安。

For example, vacuum metallurgy, power condensers, transtormers, vacuum macerate process, fore-sucking for vacuum coating equipment, etc.

真空冶炼，电力电容器，变压器，真空浸渍处理，真空镀膜设备中的预抽等。

The main body of a book have analysed a generator losing the magnetism physics process , have given a generator out the fundamental equation losing the magnetism queen; By using simulated module of electric system in Matlab/Simulink,build a single infinity system emulation model , have included module such as generator , excitation system , transformer , idle work power source , circuit loads , infinity system , transmission line; Lose magnetism condition two kinds specifically for the excitation winding loses magnetism and the part completely losing magnetism, lower emulation having carried out different working condition, have gained machine holding stater voltage , have encouraged the magnetoelectricity stream , excitation voltage and output having performed meritorious service power wave form change condition; By simulated wave form of contrast , to every electricity amounts, change law has carried out theoretical analysis.

本文分析了发电机失磁的物理过程，给出了发电机失磁后的基本方程；通过使用Matlab/Simulink中的电力系统仿真模块，建立一个单机无穷大系统仿真模型，包括了发电机、励磁系统、变压器、无功电源、线路负载、无穷大系统、输电线路等模块；针对励磁绕组完全失磁和部分失磁两种失磁情况，进行了不同工况下的仿真，获得了机端定子电压、励磁电流、励磁电压和输出有功功率波形的变化情况；通过对比仿真波形，对各电气量变化规律进行了理论分析。

Therefore, the transformer has got the important function in electric power system with people live.

可见，变压器在电力系统和人民生活中有着重要的作用。

In order to reduce inverter capacity and enhance system reliability, a new series hybrid active power filter with small self-inductance series transformer is proposed in this paper.

为降低逆变器容量和提高系统可靠性，该文提出一种新的采用低自感串联变压器的串联混合型有源电力滤波器。

High-voltage power distribution and the step-down transformer should regulate the electricity sector for the construction of the installation; Chai oil-fired units. UPS and low-voltage power distribution panels to be installed in accordance with the norms of telecommunications power.

高压配电所和降压变压器应按照电力部门的规范进行建设安装；柴油发电机组、UPS和低压配电屏的安装应遵照电信电源规范进行。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。