MPC-based wind power-photovoltaic-optothermal-thermal power combined power generation optimization scheduling method

Abstract

The invention relates to the field of electric power system operation and control, in particular to an MPC-based wind power-photovoltaic-optothermal-thermal power combined power generation optimization scheduling method. The MPC-based wind power-photovoltaic-optothermal-thermal power combined power generation optimization scheduling method comprises the following steps: S1, prediction informationof a wind power-photovoltaic-optothermal-thermal power combined power generation system is obtained; S2, a heat-electricity conversion model of an optothermal power station is built; S3, a heat storage tank state prediction model of the optothermal power station is built; S4, an optimization scheduling model of the wind power-photovoltaic-optothermal-thermal power combined power generation systemis built; and S5, a rolling optimization scheduling method of the wind power-photovoltaic-optothermal-thermal power combined power generation system is provided. The invention aims to provide the MPC-based wind power-photovoltaic-optothermal-thermal power combined power generation optimization scheduling method, which is used for promoting coordinative optimization operation of a wind power plant,a photovoltaic power station, the optothermal power station and a thermal power unit, thereby reducing electric quantity of abandoned wind and abandoned light, and providing a reference for operationof a power grid.

Description

technical field [0001] The invention belongs to the field of power system operation and control, and in particular relates to an optimal scheduling method for wind power-photovoltaic-photothermal-thermal power combined power generation based on MPC (Model Predictive Control). Background technique [0002] At present, the installed capacity of wind power and photovoltaics in my country has continued to grow, but the power of wind power and photovoltaic power generation fluctuates randomly, and the supporting conventional power supply regulation capacity is seriously insufficient, making the problem of wind and solar abandonment more prominent. In recent years, photothermal power generation has become another important form of solar power generation after photovoltaic power generation. It has the characteristics of natural energy storage and the response adjustment characteristics of conventional units connected to the grid. It is a dispatchable and controllable new energy powe...

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Problems solved by technology

[0004]1) Utilize the power complementary characteristics of solar thermal power generation and wind power to study the optimal scheduling method of active power complementarity of new energy sources such as solar thermal power and wind power. However, regarding wind power, photovoltaic and The optimal scheduling method of combined power generation system under the complementary operation scenarios of solar thermal and other energy sources needs to be further studied

[0005]2) Utilize the heat storage function of the heat storage tank of the solar-thermal power station to give full play to the regulation ability of the solar-thermal power station, so as to cope with the random fluctuation characteristics of wind power, photovoltaic and other new energy sources; However, the adjustment capability of the solar thermal power station is closely related to the heat storage state of the thermal storage tank of the power station and the normal radiation of the sun. The existing optimal scheduling method of new energy including solar thermal access is difficult to adapt to the meteorological scene of continuous cloudy and cloudy days

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