固体介质中空隙局部放电的电动力学研究

Aage Pedersen
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引用次数: 28

摘要

指出只有通过感应电荷的概念才能对局部放电瞬变现象作出正确的解释。这一概念的应用使局部放电理论得以发展,从而可以正确地评估有关空穴参数的影响。有人认为,广泛采用的abc-电容模型不允许实现这种洞察力。此外,有人声称abc模型是基于电容概念的错误应用,并且,尽管这种简单的方法在讨论测量技术时可以成为有用的工具,但它可能导致非常不正确的结论。发现了引起部分击穿的电压和电流脉冲的瞬态与感应电荷之间的关系。
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On the electrodynamics of partial discharges in voids in solid dielectrics
It is suggested that a correct interpretation of partial-discharge transients can be obtained only through the concept of induced charge. The application of this concept enables a partial-discharge theory to be developed by means of which the influence of relevant void parameters can be assessed in a correct way. It is argued that the widely adopted abc-capacitance model does not allow this insight to be achieved. In addition, it is claimed that the abc-model is based on an erroneous application of the concept of capacitance, and, although this simple approach can be a useful tool when discussing measuring techniques, it may lead to quite incorrect conclusions. The relationship between the transients in the applied voltage and current pulses leading to partial breakdown and the induced charge is found.<>
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