A method for acquiring electrified accumulated dirt distribution of an insulator in a flow field environment

Abstract

The invention discloses a method for acquiring electrified accumulated dirt distribution of an insulator in a flow field environment, which comprises the following steps of: S1, drawing a three-dimensional stereogram of an insulator, establishing a simulation model of the insulator and a limited air area, acquiring material data of a real insulator and an actual environment, and setting material parameters; S2, adding a flow field and an electric field, and setting basic parameters of the flow field and the electric field; S3, adding a fluid flow particle tracking module in the flow field of the simulation model; S4, calculating the particle charge quantity according to the electric field intensity, setting the charge quantity of fluid flowing particles, and establishing the relation between the particle charge quantity and the electric field; S5, establishing a coupling relationship between the flow field and the electric field; S6, obtaining a dirt accumulation distribution map of the insulator under the action of airflow and an electric field; The method solves the problems that in the prior art, on-site insulator pollution data acquisition is difficult, and an existing numerical method cannot achieve multi-physical-field coupling.

Description

technical field [0001] The invention belongs to the technical field of insulators, and in particular relates to a method for obtaining the distribution of charged pollution on insulators in a flow field environment. Background technique [0002] With the continuous development of my country's industrial level, the air pollution is becoming more and more serious, and the problem of pollution of the external insulation of the power system is also becoming more and more serious. Pollution flashover of insulator strings running on transmission lines will cause line faults and even long-term power outages, which will endanger the safe operation of the power system, industrial and agricultural production, and people's daily life. Although various anti-pollution flashover measures have been taken, insulator pollution flashover accidents still occur from time to time. [0003] Obtaining the pollution distribution data of the insulator operation site requires power failure and disma...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention proposes a method for obtaining the distribution of charged pollution on insulators in a flow field environment. Through numerical calculation, the distribution map of insulator pollution under the combined action of the flow field and the electric field is obtained to guide the external insulation of transmission lines. It has important theoretical and engineering practical significance for the optimal design of the external insulation of transmission lines and the safe operation of power systems. Disadvantages of Physics Coupling

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