电压调整问题包括两个方面,一个是馈线末端电压升问题,另外一个是有载调压变压器的分接头频繁动作或者振荡。
Voltage regulation includes two fields: one is voltage rise near the end of the feeder: another is the tap hunting phenomenon of tap change under load (TCUL) transformers.
对中性点接地变压器的影响因素包括多个,其中最主要的是地电位升。
There are several factors affecting neutral grounded transformers, among then, ground potential rise is most important.
本文对于自然油循环变压器线饼温升的计算方法提出了新的意见。
This thesis brings some new proposals for the computation of temperature rise in nature oil transformer.
试验结果表明,该方法能在不增加变压器损耗、温升的条件下有效抑制变压器直流偏磁,试验数据证明了该方法的有效性和正确性。
The experimental results show that the scheme can not increase in transformer loss. The method in this design is proved to be effective and efficient one by the results of experiment.
依据一个半桥逆变电路的实例详细介绍了高频变压器设计的一般方法和步骤,并讨论变压器损耗和温升问题。
The method of design high frequency transformer in half bridge inverter circuit is introduced exampled in detail, besides temperature rise and power loss are discussed.
如何研究由于漏磁引起的附加损耗以及在金属构件中的温升是变压器设计的难题。
How to research stray losses and temperature rise on metal parts caused by leakage flux is difficult task for transformer design.
由于许多变压器并不带持续负荷,这就可利用发热时间的滞后来带上更高的峰值负荷而不至于超出温升的限定值。
Since many transformers do not carry continuous loads, advantage can be gained from the thermal time lag to carry higher peak loads without exceeding the temperature limits.
对运行中的大容量油浸自冷变压器异常温升情况进行了分析,提出了其冷却系统设计存在的问题及优化方案。
The abnormal temperature rise of a large oil-immersed self-cooling transformer in operation is analyzed. The problems and optimization program in its cooling system design are presented.
介绍了变压器温升试验时,利用不同额定电压的电容器进行补偿的方法。
The compensation methods of using different rated voltage capacitors are introduced in transformer rise test.
简单说明了有关变压器温升的一般特性,并对一台大型电力变压器现场油顶层温升的推算进行了介绍和分析。
The characteristics of transformer temperature rise is described briefly, and the top oil temperature rise calculation of a large power transformer on-site is introduced and analyzed.
本文简要分析了平面型变压器在抑制高频变压器中的漏感和温升中的作用。
The function of planar power transformer in the suppression of leakage inductance and temperature rise of high frequency transformer is presented in this paper briefly.
分析了变压器的发热和散热机理,介绍了分体式全自冷变压器温升的一种计算方法,并给出了计算实例。
The heat generating and dissipating mechanism are analysed. A method of temperature rise calculation is introduced and a calculation example is given.
叙述了IEC和GB标准中对自耦减压起动器中自耦变压器温升试验的有关规定。
The related regulations of temperature rise test of autotransformer for autotransformer starter in IEC, GB were described, the current in every winding of autotransformer was analyzed.
最后,采用温度场分析方法对变压器在不同直流偏磁量下的温升进行求解,并分析了直流偏磁对变压器温升的影响。
At last, the temperature-rise of transformer is calculated using the temperature field method and the influence on DC magnetic bias to temperature-rise is analyzed.
通过监控绕组温升,从而使得变压器能够最大限度地发挥其过载潜力同时又保证必要的寿命。
The overload capabilities of transformer can be increased by monitoring and controlling the winding temperature and the necessary durability of the transformer can be ensured.
光纡技术应用于变压器热点温升的监测,是一种优越的在线实时监测技术,可以提高设备的可用率。
Yu-transformer technology in the hot temperature monitoring, is a superior online real-time monitoring technology, can increase the availability of equipment.
通过变压器的热解剖试验获得了变压器的热阻抗矩阵元素,论证了变压器热点瞬态温升电算方法的正确性和实用性。
Numerical examples demonstrate that the presented method can greatly increase the accuracy of calculation of the self-interaction and near-interaction impedance matrix elements.
得到了较为适合的垂直油道、水平油道自然对流换热特性数经验关联式,并据此得到了自然油循环变压器垂直油道和水平油道线饼表面温降和油流温升的计算方法。
Some useful formulas for convection calculation of vertical and horizontal duct are given. So temperature decrease at the surface of discs and temperature rise of oil flow can be obtained.
特点:采用PLC程控,配置日本米亚基ct- 110焊接控制器,三段通电方式,具有电流缓升缓降功能。采用焊接变压器次级反馈控制电流及导通角控制。
Features: PLC programming, equip with Japan Miyachi CT-110 welding control device, three segments electrification method, with current slow increasing and slow dropping function.
特点:采用PLC程控,配置日本米亚基ct- 110焊接控制器,三段通电方式,具有电流缓升缓降功能。采用焊接变压器次级反馈控制电流及导通角控制。
Features: PLC programming, equip with Japan Miyachi CT-110 welding control device, three segments electrification method, with current slow increasing and slow dropping function.
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