The Fault Causes of Overhead Lines in Distribution Network

The paper introduces the typical fault causes in distribution system, especially the fault in overhead line. The data in the paper are from the surveys by different agencies all around the world. It is noted that the statistics are different with each other for many reasons, and some of them are old which was finished in 1980s. The fault causes in different areas (Nordic, North American and China) are introduced separately. Some typical fault causes (trees, animals, lightning, and vehicles) are subdivided and analyzed in detail. Some waveforms of different faults are shown in the paper too. At last, the most frequent fault causes which should be focused on are proposed by the paper.