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Photo-thermal power station smooth output method

A technology for smoothing output and solar thermal power plants, which is applied in the field of electric power and can solve problems such as delays in smoothing output curves

Active Publication Date: 2016-05-18
STATE GRID CORP OF CHINA +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0011] The main purpose of the embodiments of the present invention is to provide a method for smoothing output of a solar-thermal power station to solve the problem of time delay in the smooth output curve obtained by using a first-order low-pass filter algorithm to stabilize the power fluctuation of the solar-thermal power station in the prior art

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] The invention provides a method for smoothing output of a solar thermal power station, such as figure 2 As shown, the method includes:

[0047] Step S1, obtaining a data set composed of predicted power values ​​of the solar-thermal power station.

[0048] Specifically, this step can obtain the power prediction value from the power prediction system SCADA of the solar thermal power station, that is, obtain the output power value of the solar thermal po...

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Abstract

The invention provides a photo-thermal power station smooth output method comprising steps of: acquiring a data set composed of predicted values of photo-thermal power station power; fitting the data set by using a polynomial fitting algorithm to obtain an ideal smooth output formula; computing an ideal smooth output value according to the ideal smooth output formula; and determining a real smooth output value according to a relation between the ideal smooth output values and the predicted values of photo-thermal power station power. A finally acquired real smooth output curve is not lagged by performing polynomial fitting on the predicted values of photo-thermal power station power in the whole planned output section. Compared with a method for stabilizing the fluctuation of photo-thermal power station power by using a first-order low-pass filtering way, the method provided by the invention has a more optimized smooth output effect.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for smoothing power output of a photothermal power station. Background technique [0002] The solar thermal power station adopts the "light-heat-electricity" power generation method based on the principle of solar thermal power generation, and reflects sunlight to the surface of the heat absorber on the top of the solar tower through thousands of heliostats to form a high temperature, and then Steam is generated through the heat transfer medium to drive the steam turbine to generate electricity. Compared with photovoltaic power plants, solar thermal power plants have a lower cost of power generation and have developed rapidly in recent years. [0003] Solar energy is currently a relatively mature renewable clean energy that can be used for power generation, but due to the randomness and volatility of solar energy resources, it brings a series of impacts on the p...

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Application Information

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IPC IPC(8): H02J1/02
Inventor 柳玉白恺王靖然陈豪宋鹏王皓靖宗瑾李蕴红杜军
Owner STATE GRID CORP OF CHINA