Partial　discharge　(PD)　testing　has　proven　one　of　the　effective　methods　to　evaluate　the　operation　condition　of　10-kV　covered　conductor　(CC)　lines　and　predict　the　permanent　faults.　Power　utility　technicians　usually　patrol　the　CC　lines　with　the　ultrasonic　testing　devices　to　seek　PDs.　Although　this　strategy　is　effective,　it　is　costly　and　time　consuming　for　utilities　to　manage　the　vast　distribution　network.　Therefore,　the　objective　of　this　paper　is　to　develop　a　practical　PD　locating　system　to　enhance　the　testing　and　maintenance　efficiency　of　CC　lines.　A　novel　double-sided　traveling　wave　method　utilizing　artificial　generated　pulses　for　synchronization　is　proposed　and　applied　in　the　system.　Through　a　pulse-injection　mechanism,　the　double-side　units　can　be　synchronized　while　the　length　of　CC　lines　between　these　units　can　be　estimated.　Synchronization　of　both　side　units　and　implementation　of　the　system　is　described　in　details.　An　on-site　validation　experiment　was　conducted　on　a　3.954-km　10-kV　CC　line　under　operation　and　results　showed　that　the　proposed　system　could　effectively　locate　that　PD　defect.　©　2020　IEEE.