低风速环境下XSP-160型瓷三伞绝缘子积污特性数值模拟

doi:10.19595/j.cnki.1000-6753.tces.190513

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Abstract Porcelain insulators are widely used in transmission lines. Studying the pollution characteristics is of great significance in preventing pollution flashover and improving the safe operation of transmission lines. In this paper, the multi-physics coupling software COMSOL was used to simulate the contamination deposition characteristics of XSP-160 porcelain three umbrella insulators under wind tunnel conditions. Compared with the test results, the simulation model was verified. Based on the aforementioned method, a simulation investigation on the contamination deposition characteristics of the insulators under 110kV voltage in low wind speed was performed to examine the effects of wind direction tilt angle, wind speed and voltage types. The results show that wind direction tilt angle has a significant impact on the NSDD (non-soluble deposit density) of the insulator surface; the NSDD increases linearly with wind speed at the same wind direction tilt angle; the greater the wind direction tilt angle and wind speed, the smaller the difference in the amount of NSDD between DC voltage and AC voltage; the amount of NSDD decreases as the wind direction tilt angle increases under the DC voltage, while the AC voltage is opposite.

Key words： Numerical simulation wind tunnel test wind direction tilt angle wind speed voltage types

Received: 29 April 2019

PACS:

TM852

Fund:国家电网公司科技攻关团队项目（GY7111053）资助

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