In order to study the characteristics of bird-caused damage in Hunan Power Grid and put forward precautionary measures

we statistically observed bird activities in Hunan Power Grid. According to the statistics

we found that there were 463 kinds of birds in Hunan Province

among which 13 species were found to be involved in the bird-caused damage of transmission line in Hunan. Based on the statistical analysis of bird-caused damage in overhead transmission lines in Hunan Province from 2006 to 2016

it is found that the fault points of Hunan Power Grid are in inverted V shape in Hunan Province

which meets the distribution of the bird’s nest on the transmission lines tower. The bird-caused damage points are mostly nearby the source of water

and the occurrence of bird damage between 2: 00-8: 00 accounts for 67.60% of the total number of birds

the occurrence of bird damage in October to January of the following year accounts for 64.79% of the total number of bird victims

the type of fault is guano（85.92%）. The mid phrase of insulator strings more easily leads to bird-caused damages than the tow side phrase

and the former ratio is about two times the latter. The bird-caused damages are mainly concentrated on the 110 k V and 220 k V transmission lines

and the highest probability is the suspension sting of V type and I type. The bird-caused damages have little relationship with the material of insulators in Hunan Power Grid. The applications of the anti-bird devices in Hunan Power Grid are introduced and evaluated. The suggestions

such as to observe the bird behavior

to draw the risk distribution diagram of the bird-caused damages

to evaluate the bird-caused damages of the transmission lines

to take the proper anti-bird measures

and to bring the anti-bird-caused damages into the pre-feasibility study of the new transmission lines’ planning

are also proposed.