Simulation calculation of guano fault hazardous areas in overhead transmission lines in power systems

Abstract

Guano flashover is the most typical type of bird damage fault, which can be divided into two types based on the formation mechanism: guano spatial flashover and guano pollution flashover. These two types of flashover are harmful to almost all levels of transmission lines. For 110 kV level transmission lines, guano flashover faults account for over 90% of all bird damage faults. Among them, guano space flashover has caused tripping faults in multiple foreign ultra-high voltage lines. From this, it can be seen that finding the mechanism of bird manure fault formation and formulating corresponding preventive measures are of great significance for the safe operation of transmission lines.