外施电压

本文对所得到的实验结果，即油中电荷密度随外施电压的增加而增加，以及在局部放电的情况下发生突变的现象进行了理论解释。

The achieved experiment result , namely , the charge density in oil increased with the increasing applied voltage and phenomena was sported suddenly at the PD condition , was explained academically .

实验结果显示放电时延的统计学分布与外施电压有关，电压增大，时延缩短。

The measurement with step voltages , using CIGRE ⅱ electrode system , showed that the statistical distribution of the discharge time lag depends on the applied voltage , the time lag being shorter with increasing voltage .

用直接积分法推理出电磁力与外施电压的解析关系表达式。

By means of direct integral method , an analytic expression related the electromagnetic force with the applied voltage to the motor is deduced .

结果表明，老化后损耗角正切随外施电压的变化而变化，且损耗电流与外施电压的关系呈现非线性。

And it is found that loss changes vs varied voltages and the relation between loss current and voltage is nonlinear when PE and XLPE slice are water tree aged .

此外，在三种外施电压作用下，油纸绝缘介质失效前均会出现平均放电量、放电次数和总放电量骤增的现象。

Besides , there is an apparent growth of the number of PD , the average PD capacity and the total PD capacity before the medium failure , in all the three types of PD evolution .

利用油流带电模拟系统测量了不同油流速度、油温和外施电压下的泄漏电流，并对实验结果进行了理论分析。

The leakage current is measured by using an simulated oil flow electrification system in the cases of different oil flow rate , oil temperature and AC applied voltage , and the experimental results are analyzed in the theory .

实验数据显示，在相同换热面积和相同工质流量条件下，在冷凝器内对换热流体施加高压电场，凝结换热系数随着外施电压的升高而增加。

The experimental results indicated that the condensation heat transfer coefficient increased with the applied voltage when the high-voltage electric field was exerted on the fluid in condenser under the condition of the same heat transfer surface area and flow rate of working fluid .

研究了外施直流电压极性、幅值、作用时间和外界气象条件对表面电荷积聚的影响。

A research on the effects of amplitude , polarity and the stressed duration of the applied voltage on the surface charge accumulation is carried out .

电磁装置（如变压器）的外施激励大多为电压源，用有限元方法求解其电磁场时，一般需要采用场路耦合的方法。

As most driving sources applied to electrical devices ( such as transformers ) are voltage sources , field-circuit coupling methods are generally used in solving electromagnetic field of electrical devices .