On-site　current　measurement　for　overhead　lines　is　of　great　significance　to　the　power　quality　monitoring　and　equipment　maintenance　in　distribution　networks.　However,　there　is　still　no　easy-to-use　method　that　has　been　widely　used.　In　this　paper,　we　propose　a　remote　contactless　method　using　a　vertical　magnetic-sensor　array.　Two　algorithms　based　on　the　measured　magnetic　fields　are　also　proposed.　The　simulation　results　show　that　two　proposed　algorithms,　involving　the　use　of　only　vertical　magnetic-sensor　array　with　the　known　overheadline　geometries,　can　achieve　an　accurate　phase　current　measurement　whose　error　is　smaller　than　+/-　3%.