电力变压器

According to the thermal process of transformer core and winding,this paper analyzes the compositions of core loss and load loss and their impacts on top oil temperature and hot-spot temperature of a transformer,and discusses the physical meanings of the parameters of the hot-spot temperature calculation equation recommended in the standard GB/T 15164-1994(loading guide for oil-immersed power transformers).

根据变压器铁心和绕组的发热过程，详细分析了变压器铁心损耗和负载损耗的组成以及其对变压器顶层油温和热点温度的影响，从实际物理意义的角度详细解释了GB/T 15164-1994《油浸式电力变压器负载导则》推荐的绕组热点温度计算方程各参数项的含义。

The company's main business for the enamelled round aluminum wire, copper clad aluminum wire and bare Wire manufacturing and sales, led 220 Products for polyester composite polyimide enamelled round aluminum wire, copper clad aluminum wire and bare wire, etc. widely used in: Microwave oven transformers, three-phase power transformers, low voltage control transformer, dual hot washing machine motor, rectifier, large screen color TV degaussing coil, kitchen electrical, magnetic ore sorting equipment, automobile spare parts and wire and cable and so on.

公司的主营业务为漆包圆铝线、铜包铝线和裸铝丝的制造和销售，主导产品为220级聚脂复合聚酰亚胺漆包圆铝线、铜包铝线和裸铝线等，广泛应用于：微波炉变压器、三相电力变压器、低压控制变压器、洗衣机双热电机、整流器、大屏幕彩电消磁线圈、厨房电机、磁矿选设备、汽车备件及电线电缆等。

The article analyzes the relationship between transformer s winding structure and its induced voltage test method.

讨论了 110kV双绕组电力变压器内部绕组结构及布置与感应耐压试验方法的关系，变压器的感应耐压试验方法应根据变压器的结构来确定，同时变压器的结构布置也应考虑到试验方法的可行性以达到设计要求和试验要

In order to achieve good control effect in the research of special electronic power transformer,we employed Park transformation to implement the transfer from the double closed-loop decoupled control of three-phase to four-phase EPT s primary side.

在特种电子电力变压器的研究中，为了达到良好的控制效果，采用Park变换来实现三相变换到四相电子电力变压器高压侧的双闭环解耦控制。

Currently, Dissolved Gases Analysis is the most important means to analyze the incipient insulation fault statement of oil-filled power equipments.

油中溶解气体分析(Dissolved Gas Analysis，简称DGA)是目前分析电力变压器等充油电气设备绝缘状态最重要的检测方法，为诊断电力变压器内部故障提供了重要依据。

The experiment was operated in Huizhou 500 kV substation and a 500 kV single phase electrical transformer was chosen as experimental object.

设计了500 kV单相电力变压器振动与噪声在线同步监测方案，并通过振动与噪声传感器及相应的数据采集和分析系统实现了对广东惠州500 kV变电站单相电力变压器直流偏磁条件下的振动与噪声的实时监测。

DC motor complex large-scale three-phase power transformer deep-trough three-phase asynchronous motor DC motor DC motor single-phase squirrel-cage induction motor.Three-phase commutator motors, single-phase motor power sub-phase squirrel-cage three-phase asynchronous electric double mine explosion-proof motor with squirrel-cage three-phase asynchronous motor rotor cup AC servo motor drives three-phase asynchronous motor principle of rotating magnetic field Generation and transmission of three-phase induction motor winding three-phase stepper motor 165mm Three-phase three-phase synchronous motor stepping motor JFB power generator rotor rectifier type AC synchronous motor DC servo motor three-phase current rotating magnetic field of teaching instrument Wound Three-phase alternator motor 160 rats of three-phase permanent magnet generator cage induction motor Synchro Motor medium-sized three-phase power transformer

直流复励电动机大型三相电力变压器三相异步深槽式电动机直流电动机直流电机单相异步鼠笼式电动机三相整流子电动机单相电动机电源分相器三相异步双槽鼠笼电机矿用防爆电动机三相异步鼠笼式电动机杯形转子交流伺服电动机三相异步电动机调速原理旋转磁场的产生与变速三相绕线式异步电动机 165mm三相步进电机三相同步电动机 JFB型硅整流发电机转子供电交流同步电机直流伺服电动机三相电流旋转磁场示教仪绕线式电动机三相交流发电机 160型永磁发电机三相鼠笼异步电动机自整角电机中型三相电力变压器

The measurement, compensation, mitigation and elimination methods of geomagnetically induced current are described in this paper. The authors do research on effects of compensation on the performance of the power transformer according to the variable relation with compensation current to GIC.

详细阐述了地磁感应电流的检测、补偿、削弱和消除的方法；讨论了补偿电流与GIC大小的变化关系对电力变压器性能的补偿效果，以及采用消除GIC方法时对电力变压器的影响。

Therefore, it is of great realistic significance to study the fault diagnosis technology and raise the level of maintenance of power transformers.

因此，研究电力变压器的故障诊断技术，提高电力变压器的维护水平，具有重要的现实意义。

ZGR3(XRNT5)-15.5H.V.current-limiting back-up fuse for short-circuit protection of oil-immersed transformer(here-under fuse) is availab-le ailable for H.V. indoor electric system,with rated voltage 1 5.5Kv,rated cu rrent up to 175A, 50Hz a.c..It is used for protecting from short-circuit for power transformer.

ZGR3 (XRNT5)-15.5油浸式变压器短路保护用高压限流后备熔断件适用于交流50Hz，额定电压15.5KV，额定电流至75A的高压户内电力系统，作为电力变压器的短路保护。

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。