Power grid friendly wave energy power generation collecting system and operation control method thereof

Abstract

The invention discloses a power grid friendly wave energy power generation collecting system and an operation control method thereof. The system comprises an offshore confluence station or booster station, an electric energy storage system, a wave energy power generation centralized control system and a wave energy power generation system; electric energy of the wave energy power generation systemis collected by the offshore confluence station or booster station and then is transmitted to a receiving end power grid through a submarine cable; the electric energy storage system is connected toa grid connection access point of the wave energy power generation system in the receiving end power grid; the wave energy power generation centralized control system is arranged on the side of the receiving end power grid connected to the wave energy power generation system; the wave energy power generation centralized control system obtains the operation state and sea condition information of each wave energy power generation device, the operation state of the electric energy storage system and the state information of the receiving end power grid; and the wave energy power generation centralized control system is also used for issuing dispatching instruction targets to each wave energy power generation device and the electric energy storage system. According to the power grid friendly wave energy power generation collecting system and the operation control method thereof, the power grid friendliness of the wave energy power generation system is improved, and active participation involtage regulation and frequency modulation operation control on the receiving end power grid is realized.

Description

technical field [0001] The invention belongs to the technical field of distributed power generation and grid-connected operation control, and relates to a grid-friendly wave energy power generation collection system and an operation control method thereof. Background technique [0002] Wave energy power generation is an important form of ocean energy power generation and utilization. It converts the mechanical energy of ocean wave motion into electrical energy output, and is also one of the hot spots in the application and research of ocean energy power generation. The global wave energy flow reserves can reach an average of 1-10TW. The coastline of my country's mainland is 18,000 kilometers long, of which the Bohai Sea, the Yellow Sea and the East China Sea account for 1TWh. It has unique potential for wave energy development. [0003] Wave power generation currently generally adopts an indirect-driven ocean energy power generation structure. figure 1 is a schematic diagra...

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Problems solved by technology

However, this method does not fully consider the operation control requirements of the receiving end grid, and does not fully consider the full use of the energy storage effect of the hydraulic transmission device in the secondary energy conversion link of the wave energy generation device.

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