Simulation method for researching influence on potential and electric field distribution of rod insulator by suspended sand

Abstract

The invention relates to a simulation method for researching the influence on the potential and electric field distribution of a rod insulator by suspended sand. The method comprises the steps of in order to research the influence on the along surface potential and electric field distribution of the insulator by suspended sand in the air, drawing a geometric simplified model of the rod insulator in suspended sand environment, and computing and analyzing the potential and electric field distribution of the insulator at different suspended sand states through an electrostatic field finite element method. The simulation results show that suspended electric neutrality sand in the air can slightly distort the along surface potential and electric field of the insulator; after the suspended sand is charged with the same electric quantity, the distortion amplitude of the along surface potential and electric field of the insulator are increased; the influence on the along surface potential and electric field of the insulator by the grain size, the quantity, the charged electric quantity and the polarity of the suspended sand is obvious. The simulation method can properly analyze the influence on the potential and electric field distribution of the rod insulator by the suspended sand.

Description

technical field [0001] The invention relates to a simulation method for studying the influence of suspended sand particles on the potential and electric field distribution of rod-shaped insulators, belonging to the field of computer simulation. Background technique [0002] The vegetation in Northwest my country is sparse, and sandstorms caused by severe land desertification have caused many flashover accidents of high-voltage transmission lines in my country. Some scholars have investigated in Xinjiang and found that flashover accidents in dusty environments account for about half of all high-voltage line external insulation flashover accidents. "Sand flash" has received the attention of the world. [0003] Dust weather not only accelerates the deposition of dust on the surface of insulators, but also turns the clean air around the insulator into a mixed medium of air and suspended sand particles. The potential and electric field of an insulator will change due to the sur...

AI Technical Summary

Problems solved by technology

In view of the existing studies, the particle size of the suspended sand particles in the air around the insulator, the polarity of the charge carried by the sand particles, the mixed particle group of charged sand particles and electrically neutral sand particles, and the mixed particle group of positive and negative polarity sand particles have not been considered. Effects of Important Factors on Creepal Potential and Electric Field of Insulators

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