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首页> 外文期刊>Science, Measurement & Technology, IET >Positive dc corona inception on dielectric-coated stranded conductors in air
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Positive dc corona inception on dielectric-coated stranded conductors in air

机译：空气中绝缘涂层绞合导体上的正直流电晕起始

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In this study, the positive inception voltage of bare and dielectric-coated stranded conductors has been researched by numerical calculations and corona cage experiments. The charge simulation method is used to calculate the potential gradient distribution of the coated stranded conductors. Then, based on the positive inception criterion, the photoionisation inception model considering the effective radiation wavelength is proposed and employed to evaluate the inception voltage of the coated stranded conductors. In addition, in the laboratory, the inception voltage test platform is build up to measure the inception voltage. The results reveal that with the increase of the coating layer thickness, the inception voltage increases. For the same thickness, the inception voltage reduces slightly with the increase of relative permittivity. The calculated values are in good agreement with experimental results of the laboratory corona cage. The conclusion lays a foundation for studying the effect of the coating layer on the corona performance.
机译：在这项研究中，通过数值计算和电晕笼实验研究了裸露的和电介质涂覆的绞合导体的正起始电压。电荷模拟方法用于计算涂层绞合导体的电势梯度分布。然后，基于正起始判据，提出了考虑有效辐射波长的光电离起始模型，并用于评估涂层绞合导体的起始电压。另外，在实验室中，建立起步电压测试平台以测量起步电压。结果表明，随着涂层厚度的增加，起始电压增加。对于相同的厚度，起始电压随相对介电常数的增加而略有降低。计算值与实验室电晕笼的实验结果非常吻合。该结论为研究涂层对电晕性能的影响奠定了基础。

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