負(fù)直流電壓下棒板間隙起暈電壓計(jì)算方法
[Abstract]:Corona discharge is a prominent problem in the design and operation of high voltage transmission project. Based on the theory of streamer discharge and self-sustained discharge, a photoionization model for the initial voltage of negative DC corona considering the influence of altitude temperature is established, and the physical meaning of the parameters in the criterion is clarified. In this paper, a new method based on ozone detection principle is proposed to detect halo voltage. The negative DC corona initiation voltage with different electrode sizes between rod and plate gap is obtained under short gap. In the National Engineering Laboratory of Ultra-high Voltage Engineering (Kunming) (2100m above sea level), the corona initiation voltage of the test piece of the valve hall was measured under the negative DC voltage. Comparing the data of the two experiments and the experimental data obtained in the literature with the results of the model calculation, it is found that the difference between the two experiments is very small under the same conditions. The method proposed in this paper is expected to provide an effective basis for corona control and design of high-voltage DC valve hall fittings.
【作者單位】: 武漢大學(xué)電氣工程學(xué)院;國網(wǎng)福建省電力有限公司電力科學(xué)研究院;南方電網(wǎng)超高壓公司;
【基金】:國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃項(xiàng)目(973計(jì)劃)(2011CB209404) 國家自然科學(xué)基金(51477120)~~
【分類號(hào)】:TM744
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