Surveying and Mapping Method of Ice-covered Area Distribution in Power Grid

Abstract

The invention discloses a mapping method for ice coating region distribution of power grid. The mapping method for the ice coating region distribution of the power grid comprises the following steps: summarizing the regularity of weather and terrain features on the basis of years of historical meteorological data of a meteorological station, building a weather model which can represent the relationship between the thickness of ice coating of wires and meteorological elements, combining geographic elements and terrain feature elements to correct the model, calculating the thickness of the ice coating in various places of a region of recurrent interval of 30 years, 50 years and 100 years, verifying and revising the thickness of the ice coating in various places according to the experience of operation and maintenance, and completing the mapping of an ice area distribution map of the power grid. By means of the mapping method for the ice coating region distribution of the power grid, regularities of distribution of the thickness of the ice coating of the power grid can be accurately reflected, all regions can be covered, a basis can be provided for the design, operation, maintenance and technical transformation of the power grid, and meanwhile, a guiding function for new constructions of the region with no power facilities can be achieved.

Description

technical field [0001] The invention relates to the technical field of power grid transmission and transformation lines, in particular to a surveying and mapping method for the ice distribution of lines considering meteorological parameters, geographical elements and topographical elements. Background technique [0002] Icing of power facilities has always been an important natural factor that threatens the safe and stable operation of the power grid. With the evolution of the global climate, abnormal phenomena such as El Nino phenomenon and La Nina phenomenon continue to appear, and the occurrence range, frequency and intensity of all kinds of extreme severe weather represented by icing in my country have shown a significant increase trend, causing harm to the operation of the power grid. It is also showing a rapid upward trend, and its consequences and impacts are also more serious. [0003] Accurately describe and divide the distribution of grid ice areas, and draw grid i...

AI Technical Summary

Problems solved by technology

Existing mapping methods use few sources of ice observation data and short accumulation time; insufficient consideration is given to altitude, atmospheric circulation, "micro-topography, and micro-meteorology"; the application of online grid ice monitoring technology has just started, and there are very few data; Different return periods are not considered, and power equipment with different voltage levels uses one map

Therefore, the existing ice area distribution map cannot fully reflect the actual situation on site, and it is inconvenient to use

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