Application method and device for wind-solar complementary grid-connected generation on same piece of land

Abstract

The invention provides an application method for wind-solar complementary construction and simultaneous grid-connected generation on the same piece of land. According to the technical content of improvement, a photovoltaic power station is planned and constructed by using space land between arranged fans in a large wind farm; a double split winding boosting transformer is used for a main transformer of a wind power and photovoltaic booster station, a high-voltage side is connected with a power grid, the capacity of a winding at the high-voltage side is shared by wind power and photovoltaic power, the capacities of two split windings on a low-voltage side are used for connection of the wind power and the photovoltaic power respectively and a wind power collecting circuit is isolated from a photovoltaic collecting circuit; and a dynamic reactive power compensation device is arranged on a high-voltage side bus of the booster station and the compensation principle is designed as a whole according to the common demands of the wind power and the photovoltaic power. According to the application method and device, the technical problems of complementary construction of the wind power and the photovoltaic power on the same piece of land and sharing of one set of grid-connected system are solved; the utilization rate of the land and power grid equipment is improved; the wind power is isolated from the photovoltaic power by the double split winding transformer; separate electricity measurement is achieved; short-circuit current is reduced; and the reliability of a grid-connected generation system is improved.

Description

technical field [0001] The present invention relates to the technical field of wind-solar complementary construction and grid-connected power generation, in particular to an application method for wind-solar complementary construction and simultaneous grid-connected power generation on the same land, and the invention also relates to a wind-solar complementary grid-connected power generation on the same land device. Background technique [0002] At present, the adjacent large-capacity wind farm and photovoltaic power station adopt two independent step-up grid-connected systems. Because the owners of wind power and photovoltaic projects, the construction sequence, and the on-grid electricity price are different, there are technical and management obstacles, and they cannot be combined. for one. [0003] Wind energy is a low-density energy source. Large-scale wind farms occupy a large area and the land utilization rate is very low. The sudden reduction of state-owned unused l...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an application method for wind-solar complementary construction and simultaneous grid-connected power generation on the same piece of land; another technical problem to be solved by the present

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