变压器油

The comprehensive switching control is carried out by the control strategy of combining transformer load with transformer temperature and the change rate of temperature.The cyclic operation of cooling unit group is controlled by the principle of accumulated operating time balance.

装置以变压器的负荷、油面温度与温度变化率相结合的控制策略进行冷却器的综合投切控制，以冷却器组的累计运行时间基本均衡为原则进行冷却器组循环控制。

Forecast precision to rise, use an index deliquescent gas data has flowing operation in the oil of the electric power transformer to strong random sex flowing processing, right in front those who get wait for removed data to be generated afresh, make a new series.

为了提高猜测精度，采用一次指数平滑运算对强随机性的电力变压器的油中溶解气体数据进行平滑处理，对前面得到的等间隔数据重新生成，构成一个新序列。

According to this theory, the origin of return voltage in oil-paper insulation system is analyzed. Then two equivalent extended Debye models, a simplified one as well as a complicated one, are established. Based on the dielectric polarization theories, the parameters in the Debye models are analyzed, and its influence to the curve of return voltage are also discussed.

本文首先从极化过程的基本原理出发，给出了回复电压法的理论基础，并由此分析油浸式电力变压器出现回复电压的原因；然后建立了两种等效扩展德拜模型，结合介质极化理论分析了模型中电路参数的意义，并讨论了各参数变化对回复电压曲线的影响。

This paper sets up a kind of method to calculate the temperature field of the winding in large natural circulation power transformer with oriented cooling structure.

本文建立了一种能够计算大型自然油循环导向冷却结构变压器线圈温度场的方法。

This paper sets up the mathematic model of heat transfer and oil flow, and finishes the calculation of oil flow distribution and temperature field of winding in large natural oil circulation power transformer with oriented cooling structure.

本文建立了传热与流动数学模型，完成了大型自然油循环导向冷却方式变压器的油流分布和绕组温度场计算。

Thus an oil-paper insulation system model is introduced for the return voltage analysis. By testing different aged paper or pressboard, the impact of aging degree to the return voltage may be achieved, and it could be helpful to the aging assessment. Based on the principle of polarization process, the basic theory of return voltage is present.

为此，在研究油浸电力变压器绝缘结构的基础上构建了油纸绝缘系统模型，针对该模型进行了回复电压试验，试图通过改变纸的老化程度来分析此时回复电压的变化规律，以期由此有助于进行老化评估。

Fault diagnosis model for power transformer based on support vector machine and dissolved gas analysis.

基于支持向量机及油中溶解气体分析的大型电力变压器故障诊断模型研究。

This invention products have high sensitivity for ethyne and alcohol etc, wide working range for keeping sensitivity, better selectivity, rapid response and resume function and better stability. It is suited to leakage detection of enthyne and alcohol etc,particularly for on line detection of low concn. ethyne in transformer insulating oil.

本发明对乙炔、乙醇等气体灵敏度高，保持灵敏度的工作范围宽，选择性好，响应、恢复快，稳定性好，适合于一般乙炔、乙醇等气体检漏，特别是适合于变压器绝缘油中低浓度乙炔气体的在线检测。

Gas solved in oil meteorologic chromatogram analysis is an important means of detecting inner faults in transformers.

油中溶解气体气相色谱分析是变压器内部故障的重要检测手段。

Using the self made liquid culture medium JOA, we isolate Mycoplana and Rothia from the wasted medium oil of a large size transformer. The authors studied their morphologies, characters of physiology and biochemistry, the chemical composition of the cell wall.

用自制的 JOA液体培养基从报废的大型变压器介质油中分离得到枝动菌和罗思氏菌，并对其形态、细胞壁化学组分及一些生理生化特性进行实验分析。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。