Wind-solar-photothermal combined power generation system day-ahead scheduling method considering price type demand response

Abstract

The invention provides a wind-solar-photothermal combined power generation system day-ahead scheduling method considering price type demand response. The wind-solar-photothermal combined power generation system day-ahead scheduling method is characterized in that the wind-solar-photothermal combined power generation system day-ahead scheduling method comprises the steps: firstly enabling wind power and photovoltaic power to be combined with TES of a CSP power station through a power-to-heat conversion link, and constructing a W-PV-CSP combined power generation system; and secondly, by introducing a PDR model, constructing a PDR-considered W-PV-CSP combined power generation system day-ahead optimization scheduling model; and finally, by coordinating and scheduling the output of each power station and the electricity purchasing quantity of the electric heating device, reducing the system operation cost while the system wind power consumption is promoted. The wind-solar-photothermal combined power generation system day-ahead scheduling method has the advantages of scientificity, reasonability, high applicability, good effect and the like.

Description

technical field [0001] The invention relates to a day-ahead scheduling method of wind-solar-solar-thermal combined power generation system considering price type demand response. Background technique [0002] Existing technologies use a variety of new energy sources for joint power generation, including wind power (Wind Power, W), photovoltaic power generation (Photovoltaic, PV), and concentrated solar power (CSP). However, restricted by the natural properties of wind and light, wind power and photovoltaic power generation have the characteristics of volatility and intermittency. When necessary, it is necessary to abandon wind and light to ensure the safe operation of the power grid. [0003] CSP power stations can store excess electricity in thermal energy storage (TES) in the form of thermal energy, which has certain energy time-shift characteristics. If it is combined with wind power and photovoltaic power generation with large fluctuations, part of it can be balanced on ...

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Problems solved by technology

[0004] At present, some progress has been made in the research on the optimal scheduling of multiple new energy combined power generation. However, with the increase in the types of new energy power stations, the coordination mode between traditional new energy power stations is relatively single, which cannot make full use of the operating characteristics of each new energy power station; at the same time, the dispatching method of the power grid does not make full use of demand-side resources. There is still insufficient research on the coordinated dispatching method of source and load

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