Compressed air and seawater pumped storage coupled energy storage system and method

• Main Authors: ZHANG BIN, LIU JINGRU, HU XUNDONG, SUI FEIFEI, ZHANG SHUYING, WANG XUFENG, MIAO JINGQUAN, XU JUNXIANG, YANG JUNBO, QI JINSHENG, LI CHUANYONG, TIAN LIN, JI FENGJUN
• Format: Patent
• Language: Chinese; English
• Published: 09.08.2022
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PRODUCING MECHANICAL POWER; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; STEAM ACCUMULATORS; STEAM ENGINE PLANTS; STEAM ENGINES; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention discloses a compressed air and seawater pumped storage coupled energy storage system and method, and the system comprises at least one seabed storage tank disposed below the sea level, a compressed air energy storage module and at least one compressed air storage tank disposed above the sea level, a pumped storage module, and a power transmission system. The compressed air energy storage module is connected with the seabed storage tank and the compressed air storage tank. The pumped storage module is arranged in the seabed storage tank, and the pumped storage module and the compressed air energy storage module are connected to an external power grid through a power transmission system. The seabed storage tank and external seawater are adopted to form gravitational potential energy for energy storage, the situation that a reservoir is excavated on land in a large range in traditional seawater pumping storage is avoided, and investment is saved. According to different setting depths of the seabed