Accurate　fault　location　plays　an　important　role　in　the　fault　clearance　of　the　transmission　line.　However,　because　of　the　influence　caused　by　fault　resistance　and　the　remote　end　system,　there　are　four　unknowns　in　the　two　equations　built　by　the　fault　phase.　Thus,　the　equations　cannot　be　solved.　In　this　paper,　a　single-terminal　fault　location　method　for　transmission　lines　integrated　by　the　inverter-type　source　is　proposed.　For　a　single-phase　to　ground　fault　or　phase-to-phase　fault,　due　to　the　specific　control　strategy,　the　equivalent　positive　and　negative-sequence　impedances　of　the　converter　are　unequal　in　most　cases.　However,　the　positive　and　negative-sequence　impedances　of　other　elements　are　approximately　equal,　and　the　boundary　condition　at　the　fault　branch　is　definite.　Combining　the　boundary　condition　and　the　sequence　impedance　difference,　two　uncorrelated　equations　can　be　built.　Substituting　them　to　the　equations　built　by　the　fault　phase,　the　fault　location　can　be　calculated　accurately.　And　the　influence　caused　by　fault　resistance　and　the　remote　end　system　is　eliminated.　The　simulation　results　show　that　the　proposed　method　can　achieve　fault　location　accurately.　Moreover,　it　has　higher　reliability　and　is　independent　of　control　strategy,　fault　distance　and　fault　resistance.