Laboratory icing simulating test method of optical power ground wires (OPGWs)

Abstract

The invention belongs to the technical field of power system communication, relating to a laboratory icing simulating test method of optical power ground wires (OPGWs), which can simulate and test the performance changes of running lines in various icing thicknesses states in a laboratory. The method carries out an experimental comparative study on the electrical properties, the communication andthe mechanical properties of the OPGWs under an icing condition by utilizing a laboratory icing simulating test system, mainly carries out the experimental studies on lightning resistance, short-circuit current, attenuation, tensile strength, stress strain and the like on the OPGWs with different structures, types, technical parameters, materials and the like and then determines a comprehensive solution on resistance of the OPGWs on icing disasters through analyzing test data.

Description

technical field [0001] The invention belongs to the technical field of electric power system communication, and in particular relates to a laboratory simulation ice coating test method for a special electric power optical fiber composite overhead ground wire (OPGW). Background technique [0002] From January to early February 2008, most parts of southern my country experienced continuous large-scale catastrophic ice and snow weather. This rain, snow and freezing weather process has a wide range of influence, high intensity, long duration, wide coverage and great harm. , In many areas, it happens once every 50 years, and in some areas, it happens once every 100 years, which is rare in history, and has seriously affected the transportation, electricity, communications and people's lives in these areas. The freezing disaster especially caused great harm to the power grids in Southwest my country, Central China, and East China, and the power grids in Hunan, Zhejiang, and Jiangxi ...

AI Technical Summary

Problems solved by technology

The performance changes of optical fiber composite overhead ground wire (OPGW) before and after icing (especially re-icing), potential hidden dangers, and their great impact on the operation of optical cable lines have not been reported in detail at home and abroad, especially for optical fiber composite overhead ground wires. The application of OPGW in the power system is more and more extensive. The product performance testing of OPGW in general areas has included many aspects such as geometric dimensions, transmission performance, mechanical performance, environmental performance, electrical performance, etc. It has been fully able to pass these tests Mastering the basic characteristics of the samples can guarantee the product quality of OPGW, but the routine quality testing items stipulated in the industry standards can no longer meet the requirements under severe natural disasters (such as icing, etc.)

At present, there are no technical indicators and requirements for optical cables under ice-covered conditions that can be actually operated at home and abroad, and no corresponding test environment and methods have been established for testing and research. In the face of natural ice-covered disasters, it is difficult to come up with effective and feasible comprehensive solutions. Program

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