Power　cable　carbonization　path　fault　arc　in　the　cause　of　electrical　fires　occupies　a　large　proportion.　It　has　the　characteristics　of　difficult　prevention,　strong　concealment,　and　great　harm.　Based　on　the　arc　fault　characteristics　experimental　device,　a　high-speed　camera　was　used　to　take　pictures　of　the　cable　carbonization　path　generation　process,　and　the　mechanism　of　the　process　is　analyzed　in　stages.　An　orthogonal　experiment　was　used　to　obtain　the　primary　and　secondary　influencing　order　of　each　factor　on　the　results,　and　the　optimal　level　combination.　Finally,　based　on　Magnetohydrodynamics　(MHD)　theory,　a　simulation　model　of　the　BVVB　cable　notch　arc　was　established　by　Comsol　software　to　simulate　the　dynamic　trend　of　the　arc　in　the　early　carbonization　process.　By　comparing　the　simulation　results　with　the　actual　images　captured　by　the　high-speed　camera,　the　feasibility　of　the　model　is　verified,　and　it　provides　ideas　for　further　research　on　the　cable　carbonization　path　process.　©　2023,　Beijing　Paike　Culture　Commu.　Co.,　Ltd.