Method for constructing atmospheric pollutant diffusion model

Abstract

The invention discloses a method for constructing an atmospheric pollutant diffusion model. The method includes the following steps of establishing three-dimensional space rectangular coordinates, determining factors which influence atmospheric pollution diffusion, simplifying a fundamental form of a Gaussian model, and obtaining the atmospheric pollutant diffusion model. The method can be widely applied to survey regions with various dimensions, and is particularly suitable for medium and small dimensions. Besides, the method is high in computational efficiency, low in requirement to meteorological data, and capable of reflecting a diffusing process of atmospheric pollution to the greatest extent in a simple mode. Under the conditions that a rang is small, a weather field is simple, the underlying surface and topographic conditions are relatively not complex, and secondary pollutant is not considered or processed simply, a concentration field calculated through the method and a concentration field calculated through a complicated numerical method are comparatively fit, errors are mainly derived from input parameters of the model (such as precision degree of pollution source data), the model is simple, input data are less, and programming and developing are convenient.

Description

technical field [0001] The invention relates to a method for constructing a model, in particular to a method for constructing an air pollutant diffusion model. Background technique [0002] The outdoor electrical equipment of transmission lines and substations are often polluted by industrial pollution or natural salinity, flying dust, bird droppings, etc. In a dry climate, the resistance of the dirty layer is very large, and the insulation performance will not be reduced. However, under adverse weather conditions such as fog, dew, light rain, and snow, the electrolyte in the dirty layer will increase the surface conductivity after being wetted. , the insulation performance is reduced, and the ash in it can retain moisture, which promotes the further moisture of the dirty layer, thereby dissolving more electrolytes, and its surface conductance and leakage current will greatly increase under the action of an applied voltage, which may lead to occurrence along the insulating d...

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Problems solved by technology

However, the polluted area distribution map of the year usually relies on the test data a year ago, and the current environmental changes are not considered much, so the formulation of the polluted area distribution map is not forward-looking. In order to ensure the safety of the line, it is still Spend a lot of money on regular adjustment and cleaning

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