Optimal scheduling method for promoting wind power consumption by utilizing photo-thermal power station

Abstract

The invention discloses an optimal scheduling method for promoting wind power consumption by utilizing a photo-thermal power station. The method comprises the following steps: firstly, a photo-thermal-wind power system structure containing a thermal storage system and an electric heating device is in combined grid-connected operation with a wind power plant; secondly, with the lowest system comprehensive cost as an objective function, through constructing a mathematical model of the photo-thermal power station in detail, utilizing the schedulability of a thermal storage system, the absorptivecapacity of an electric heating device and the good adjusting characteristic of a photo-thermal unit, a wind power optimization model is established; and finally, on the premise that the system cost is not increased, optimal scheduling is performed on the power system by using the model. According to the technical method, the adjusting capability of the system can be improved, the wind power consumption is promoted, the occurrence of wind power climbing events is reduced, and the safety stability and the operation economy of the power system are improved.

Description

technical field [0001] The invention relates to the field of safety and stability control of electric power systems, in particular to an optimal dispatching method for promoting wind power consumption by using a solar-thermal power station. Background technique [0002] In recent years, in order to implement the national energy development policy of "conservation, cleanness and safety" and promote a high proportion of renewable energy to be connected to the grid, renewable energy represented by wind power has developed rapidly. However, with the increase of wind power penetration rate, the phenomenon of wind curtailment is serious, and the problem of wind power consumption needs to be solved urgently. At the same time, wind power has strong volatility, and it is easy to quickly reduce or increase the power generation in a short period of time. The traditional power supply is insufficient in regulating ability, and wind power power climbing events will occur. Photothermal po...

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Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to solve the problem that the existing dispatching methods of solar thermal power plants cannot take into account the improvement of wind power consumption level and the reduction of system operating costs

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