变压器

Generally the transformer substation must install 2~3 main transformers; when 330 kilovolt and below, the main transformer usually uses the three-phase transformer, its capacity according to puts into 5 ~10 year anticipated load choices.

一般变电所需装2～3台主变压器；330 千伏及以下时，主变压器通常采用三相变压器，其容量按投入5 ～10年的预期负荷选择。

Our factory is specialized in producing low-frequency transformer plant, the main products: ring transformer, EI transformer.

我厂是专业生产低频变压器的工厂，主要产品：环形变压器、EI变压器。

Based on the research findings, a new magnetic core configuration of rectifier transformer was proposed.

为解决高压绝缘致使高频大功率开关电源中整流变压器功率密度不高的问题，通过分析常规结构整流变压器电位分布的不合理因素，提出一种新的变压器磁芯结构。

The authors combine the equivalent magnetic circuit in time domain with equivalent electric circuit in frequency one,and use it to analyze and calculate the specialities of a three-phase transformer successfully.

作者将时域中变压器的等效磁路法同频域中变压器的等效电路法有机地结合在一起，成功地用于分析和计算GIC作用时三相电力变压器的特性。

These are widely used in: micro-wave oven transformer, three-phase electric power, low-voltage control transformer, machine tool control transformer, neon light transformer, rectifier in lamps, electric soldering machine, washer double thermoelectricity machine, rectifier, wide screen color degaussing turn, kitchen electric machine, magnetic mine choosing facility, auto spare part, motor car spare parts, electric motor car, and wire and cable, fan jar, inverted power source, UPS power source, water pump electric machine, air-compress electric machine, disk wire, and so on.

公司的主营业务为漆包圆铝线，漆包圆铜线，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。

In the transformer differential protection, it is a congenital and difficult problem that cant be avoided how to distinguish the magnetizing inrush current with the internal fault current. It has become the focus studied for many years. The existing transformer protection principles all have certain defects and the main reason lies in inadequate understand of the transformer fault mechanism.

在变压器差动保护中，如何区分励磁涌流与内部故障电流是一个先天性的、不可回避的难题，多年来一直成为研究的热点，而且现有的变压器保护原理也都存在一定的缺陷，其主要原因在于对变压器内部故障的机理认识不够。

Electronic equipment categories: two core, three core insulated wire conduction test machine, an integrated plug-line tester, polarity tester, full-featured integrated precision wire tester, analog / digital storage oscilloscope, signal generator, the standard signal source, frequency dollars, Millivoltmeter distortion device,Miriam, LCR digital electric bridge, voltage tester, insulation resistance tester, grounding resistance tester, leakage current tester, electronic load, electric parameter measuring instrument, digital power meter, parameter measuring instrument transformers, transformer automatic testing system, transformers ring than phase tester, electrical safety parameter tester, variable frequency power supply, power supply, high-frequency shielding net room, temperature and humidity table, multimeter, power meter, tachometer, anemometer, coating thickness, coating thickness, vibration measuring instrument, the Composite test machines (motors, fans, hair dryer, lamps, fruit juice machine) and so on.

二芯、三芯线材绝缘导通测试机、插头线综合测试机、极性测试仪、全功能精密线材综合测试机、模拟/数字存储示波器、信号发生器、标准信号源、频率计、毫伏表、失真仪、抖晃仪、LCR数字电桥、耐压测试仪、绝缘电阻测试仪、接地电阻测试仪、泄漏电流测试仪、电子负载、电参数测量仪、数字功率计、变压器参数测量仪、变压器自动测试系统、变压器圈数比相位测试器、电器安全参数综合测试仪、变频电源、电源供应器、高频屏蔽网房、温湿度表、万用表、功率表、转速表、风速计、涂层测厚仪、镀层测厚仪、振动测量仪、综合测试机（马达、风扇、电吹风、灯饰、果汁机）等。

Secondly, a method based on SCADA to revise the parameter of transformers is proposed, in which the data is obtained from the substation SCADA system and is processed by least orthogonal square method, then the fitting calculation of the curve is performed, finally the actual parameters of the transformer can be derived and it can be used as the basic data for the economic operation of the transformer.

通过变电站监控系统得到SCADA实时数据，采用最小正交二乘法，对变压器损耗曲线进行拟合计算，得到变压器实际参数和功率损耗特性，并以此作为变压器经济运行的基础数据。

The normal overload can be used frequently , its permissible value shall be determined according to the load curve of the transformer, the temperature of cooling medium and the load of the transformer before the overload takes place, etc.; The characteristic curve of overload of the transformer shall be supplied by the manufacturer.

正常过负荷可以经常使用，其允许值根据变压器的负荷曲线、冷却介质的温度以及过负荷前变压器所带的负荷等来确定；制造厂家提供变压器的过负荷特性曲线。

Do not worry, we do not have to replace the power transformer, with care to remove the transformers, power transformers from the outside observation of the primary coil (that is, then one end of the 220V power), to see that the convex side.

不要担心，我们不必更换电源变压器，只要小心的取下变压器，从外表观察电源变压器的初级线圈(也就是接220V 电的那一端)，看哪一边凸一点。

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。