In　response　to　the　demand　to　improve　efficiency　and　reliability　of　power　system,　the　growing　number　of　distributed　generation　(DG)　has　been　implemented　in　distribution　networks,　making　the　networks　more　complicated.　Combined　with　fault　current　information　collected　by　feeder　terminal　unit　(FTU)　and　fault　switch　function,　this　paper　proposes　a　binary　global-best　harmony　search　algorithm　(BGHS)　to　provide　an　accurate　fault　section　location　method　for　distribution　networks　with　DG.　The　proposed　algorithm　adopts　binary　coding　mode　to　fit　the　characteristics　of　the　switch　function,　and　employs　the　best　harmony　to　perform　pitch　adjustment　that　enhances　the　accuracy　and　convergence　rate.　The　correctness　and　feasibility　of　the　algorithm　is　validated　in　a　test　distribution　network　with　DG.　The　simulation　results　have　shown　remarkable　accuracy　in　fault　section　location.　Compared　with　harmony　search　(HS)　algorithm　and　genetic　algorithm　(GA)　in　terms　of　number　of　premature　convergences,　convergence　rate　and　computation　time,　the　proposed　algorithm　shows　a　better　performance.　©　2019　IEEE.