Existing　single-terminal　traveling-wave-based　fault　location　methods　for　LCC-HVDCs　encounter　difficulties　in　wave　velocity　selection,　wavefront　identification,　and　ensuring　robustness.　Reliably　discerning　the　nature　of　the　second　reflected　wave　and　precisely　extracting　its　arrival　time　pose　significant　challenges,　which　are　crucial　for　determining　the　two　unknowns　of　fault　distance　and　fault　occurrence　time　in　single-terminal　methods.　To　circumvent　these　difficulties　and　explore　an　alternative　single-terminal　approach,　this　paper　shifts　the　research　focus　to　exploring　fault　distance　information　within　the　initial　wavefront,　combining　the　time-reassigned　multi-synchrosqueezing　transform　(TMSST)　with　EXtreme　Gradient　Boosting　(XGBoost)　to　analyze　and　correct　a　group　of　wave　arrival　times.　An　overdetermined　fault　location　equation　is　formulated　using　independent　frequency　components,　and　the　least　squares　solution　for　fault　location　is　obtained,　eliminating　reliance　on　capturing　the　second　reflected　wave.　Case　studies　demonstrate　that　the　proposed　method　achieves　an　accuracy　of　hundred　meters　in　most　scenarios.　While　performance　slightly　deteriorates　under　high-resistance　faults,　dead-zone　faults,　and　strong　noise　interference,　the　overall　accuracy　outperforms　existing　state-of-the-art　methods.