Submarine cable power transmission capacity optimal configuration method for supplying power to island

Abstract

The invention relates to a submarine cable power transmission capacity optimization configuration method for supplying power to an island, and the method is characterized in that the method builds a target function considering the power balance and electric quantity balance constraints, and comprehensively considers the local power generation cost and operation and maintenance cost of the island,and the AC networking investment and power purchase cost; the optimal electricity price in the island is realized by optimal configuration of the power transmission capacity of a submarine cable for supplying power to the island, and the method comprises the following specific steps: 1) predicting, analyzing and determining the maximum power consumption load PlMW of the island, the load reserve capacity Rl MW and the maximum power consumption Qbillion kWh of the whole island; 2) calculating the annual cost of the newly added local power supply by adopting an annual cost method; 3) calculatingthe annual cost of the submarine cable project by adopting an annual cost method; and 4) according to the prediction analysis, determining the maximum power consumption load P1, the load reserve capacity R1 and the maximum power consumption Q of the whole island, calculating the annual cost of the newly added local power supply, calculating the annual cost of the submarine cable project, and calculating the comprehensive electricity price in the island. The system has the characteristics of guaranteeing power supply, meeting island power utilization requirements, guaranteeing island power safety and the like.

Description

Technical field[0001]The invention relates to a method for optimally configuring the power transmission capacity of a submarine submarine cable for supplying power to islands. It belongs to the field of power transmission and distribution technology for island power supply.Background technique[0002]At present, the island’s power supply is a comprehensive plan based on the island’s power demand forecast, including the power supply planning on the island, according to three power supply modes: (1) The development of local (island) power sources as power sources, not connected to the mainland power grid. (2) The local (island) power supply is the main power supply, and the networked power supply is the auxiliary. (3) The submarine cable network is the main power supply, and the local (island) power supply is auxiliary.[0003]Due to the slow development of local (island) power supply and insufficient power supply capacity, local (island) power supply is the power supply method of power s...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of insufficient supply capacity, poor power supply guarantee ability, and inability to meet the needs of island health care, island vacations and island tourism, etc., in order to provide a submarine cable power transmission capacity for power supply to islands. The optimal configuration method has outstanding substantive features and significant technological progress such as sufficient power supply capacity, guaranteed power supply, meeting the power needs of island health, island vacations and island tourism, and ensuring the safety, reliability and economy of island power supply.

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