Photo-thermal power generation regulation-based heat storage amount double-stage optimization scheduling method,

Abstract

The invention discloses a photo-thermal power generation regulation-based heat storage amount double-stage optimization scheduling method, which comprises the following steps of: S1, constructing a photo-thermal power generation model: establishing the photo-thermal power generation model according to photo-thermal power generation characteristics of a photo-thermal power station, and representinga heat collection link, a heat storage link and a power generation link of the photo-thermal power station; S2, in the day-ahead scheduling stage, predicting wind power output and illumination intensity of the next day, and formulating a heat storage capacity scheduling plan and an electric power output scheduling plan of the secondary solar thermal power station according to the photo-thermal power generation model; and S3, in a real-time scheduling stage: arranging the output power of each power plant in the region according to the electric power output scheduling plan, and adjusting the heat storage scheduling plan of the photo-thermal power station in a preset range in real time so as to carry out real-time optimization scheduling on the output power of each power plant in the region.The realization method is simple. The power generation characteristic of the photo-thermal power station can be fully utilized, the flexibility of power plant scheduling and the energy utilization efficiency in the region can be improved, and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of photothermal power generation, in particular to a two-stage optimal scheduling method for heat storage based on photothermal power generation regulation. Background technique [0002] The rapid development of wind power technology has alleviated the energy crisis to a certain extent, but due to its strong volatility and intermittent characteristics, wind power is difficult to be directly dispatched like thermal power. At present, wind power and thermal power plants are usually combined into a wind power-thermal power combined power plant. On the one hand, the regulation ability of the wind farm can be improved; to reduce penalty costs. The combined power plant can aggregate various distributed resources such as wind power units, thermal power units, and controllable loads in terms of electrical characteristics, and use advanced information technology and multi-level control methods to coordinate and opti...

AI Technical Summary

Problems solved by technology

However, in the process of reporting the output of the combined power plant, the actual output of the combined power plant deviates from the declared value due to the uncertainty of the output of the internal random unit.

The characteristics of thermal power units with weak adjustment ability and high frequent adjustment cost greatly limit the real-time adjustment ability of combined power plants, making it difficult for the actual output to track the previously declared plan. How to effectively reduce the deviation between the real-time output and the previously declared is the current unresolved issues

[0003] Adding power storage devices can effectively reduce the deviation between the real-time output of the combined power plant and the previously declared power, but the high investment in power storage equipment and the low utilization rate after installation are not conducive to the economic operation of the combined power plant

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