LAYING METHOD OF SEA BOTTOM TRANSMISSION LINE, TRANSMISSION NETWORK AND TRANSMISSION PATH CREATION APPARATUS

PROBLEM TO BE SOLVED: To provide a laying method of sea bottom transmission line, capable of achieving construction of a transmission network for stable power transmission even when a part of a transmission network is broken while maintaining high reliability.SOLUTION: The laying method for laying sea bottom transmission line includes: separating by a sea area 310; blocking an existing ring opening-shaped transmission path 110 on which a transmission line is laid to surround a land portion 210 which is a coast area of not less than 4.5 km; laying a sea bottom transmission line on a sea area transmission line with less heat loss or a smaller resistance value than the existing transmission path 110; and connecting the laid sea bottom transmission line with the existing transmission path 110 to construct a ring closing-shaped transmission path.SELECTED DRAWING: Figure 1 【課題】高い信頼性を維持しながら、送電網の一部が断線しても安定的に送電可能な送電網を構築可能な、海底送電線の敷設方法を提供する。【解決手段】海底送電線を敷設する敷設方法であって、海域３１０により隔てられ、４．５ｋｍ２以上の沿岸地域である陸上部２１０を囲むように送電線が敷設された開環状の既設送電経路１１０を閉塞するとともに既設送電経路１１０と比べて熱損失または抵抗値が小さくなる海域送電経路に、海底送電線を敷設し、敷設した海底送電線を既設送電経路１１０に接続して、閉環状の送電経路を構築する。【選択図】図１