竖直和倾斜情况下绝缘子的体型系数研究

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Abstract In order to study shape coefficient of vertical and inclined insulators, the model force measurement and free wind deflection method were used in wind tunnel tests.The variation of shape coefficient of vertical insulators with wind speed and turbulence degree varying was obtained.The method of measuring shape coefficient of inclined insulators using free wind deflection was proposed, and fluctuating wind deflection characteristics and shape coefficient of composite insulators under free wind deflection were studied.Finally, the recommended values of shape coefficients for disc and composite insulators were given.The results showed that the shape coefficient of vertical insulator decreases with increase in wind speed; shape coefficients of insulator under different turbulence degrees are closer to each other; the suspended insulator has significant sinusoidal fluctuation under turbulence, but its fluctuation is not significant under uniform flow; the average wind deflection angle of suspended insulator under turbulence is larger than that under uniform flow, and the larger the wind speed, the more significant the difference; the recommended shape coefficient value for vertical disc insulator is 0.89, those for vertical composite insulator and inclined one are 0.93 and 1.00, respectively; these recommended values are closer to those in Chinese code and smaller than those in IEC, EN and JEC codes.

Key words： insulator shape coefficient wind tunnel test fluctuating wind deflection wind deflection angle

Received: 29 October 2019 Published: 15 June 2021

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	Articles by authors
	SHEN Guohui1
	BAO Yunan2
	XING Yuelong2
	WANG Yiwen2
	SONG Gang2

Cite this article:

SHEN Guohui1,BAO Yunan2,XING Yuelong2, et al. Shape coefficient of insulator under vertical and inclined conditions[J]. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(11): 163-169.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2021/V40/I11/163

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