A typhoon disaster loss assessment method and device for distribution network

Abstract

This application discloses a distribution network typhoon disaster loss assessment method and device, the method includes: according to the basic wind pressure calculated from the preset wind direction and wind speed value, the preset parameter samples and the preset mapping relationship to calculate and obtain multiple groups of electric poles Conductor and pole wind load; according to multiple groups of conductors and pole wind load, calculate the multiple pole base bending moments of each pole based on the principle of moment balance; count the poles that are greater than the preset pole resistance bending moment The number of base bending moments is taken as the number of pole failures; the number of pole failures of each pole is divided by the total number of base bending moments of the poles to obtain the failure probability of each pole, and the failure probability is taken as the pole failure rate of each pole. Vulnerability: Update the preset wind direction and speed value to obtain the vulnerability of each pole under different wind directions and speeds. The present application solves the technical problem that the model established in the prior art for the damage of electric poles of complex distribution network lines has a long calculation cycle and cannot effectively evaluate the damage of regional distribution network lines.

Description

technical field [0001] The present application relates to the field of power grid security assessment, in particular to a method and device for assessing losses of distribution network typhoon disasters. Background technique [0002] Typhoons occur frequently in extreme weather in coastal areas, which brings huge operational risks and economic losses to the power system. During the typhoon, the phenomenon of downed poles and broken poles of medium-voltage distribution lines is more serious, and the windproof capacity of distribution network lines is insufficient, which seriously affects the reliability of power grid power supply. At present, research at home and abroad mainly focuses on single pole or straight pole line systems However, for the actual complex distribution network lines, data collection is difficult, the calculation cycle of the physical model is long, and the reliability evaluation of the regional distribution network line damage cannot be effectively perfor...

AI Technical Summary

Problems solved by technology

[0003] This application provides a distribution network typhoon disaster loss assessment method, device and equipment, which are used to solve the complex actual distribution network lines in the prior art, the difficulty in data collection, the long calculation cycle of physical model establishment and the inability to effectively target regional distribution network lines Technical Issues of Reliability Assessment in Damaged Situation

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