A method for smoothing output of combined power generation system of photovoltaic power station group and thermal power plant
A technology for thermal power plants and photovoltaic power plants, which is applied in the field of electric power and can solve problems such as output smoothing curve delay and so on.
Active Publication Date: 2018-06-15
STATE GRID CORP OF CHINA +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] The main purpose of the embodiments of the present invention is to provide a method for smoothing the output of a photovoltaic power station group and a thermal power plant combined power generation system to solve the delay in the smooth output curve obtained by using the first-order low-pass filter algorithm to smooth the power fluctuation of the photovoltaic power station in the prior art. temporal phenomenon
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] 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.
[0055] The present invention provides a method for smoothing the power output of the joint power generation system of photovoltaic power station groups and thermal power plants, such as image 3 As shown, the method includes:
[0056] Step S1, for each photovoltaic power station in the photovoltaic power station group, obtain a data set consisting of the predicted value of photovoltaic power generation of the photovoltaic power station, and add the predicted v...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a smooth output method for a combined power generation system of a photovoltaic power station group and a thermal power plant. The method comprises: for each photovoltaic power station in a photovoltaic power station group, a data set formed by a photovoltaic generation power prediction value is obtained, and photovoltaic generation power prediction values in the data sets corresponding to all photovoltaic power stations are added to obtain an integrated data set formed by total generating powers of the photovoltaic power station group; on the basis of a polynomial fitting algorithm, fitting is carried out on the integrated data set to obtain a photovoltaic smooth output formula, and a photovoltaic smooth output value is calculated; a sum of the photovoltaic smooth output value and a reference output value of a thermal power plant is calculated to obtain a total smooth output value, and according to a total smooth output value, a total generating power of the photovoltaic power station group, and minimum, maximum, and reference output values of the thermal power plant, actual output situations of the photovoltaic power station group and the thermal power plant are determined. According to the invention, lagging and delay of the obtained smooth output curve can be avoided. The method has advantages of low energy consumption, low pollution, and stable output energy.
Description
technical field [0001] The invention relates to the field of electric power technology, in particular to a method for smoothing output of a combined power generation system of a photovoltaic power station group and a thermal power plant. Background technique [0002] Thermal power generation is currently the most important and most technologically mature power generation method. Currently, thermal power generation still occupies a very large proportion in my country's power generation field, but thermal power generation has disadvantages such as high energy consumption and serious pollution. [0003] In recent years, renewable clean energy such as solar energy has been increasingly used in the field of power generation. The joint power generation system of photovoltaic power station groups and thermal power plants is a power generation system that integrates photovoltaic power generation and thermal power generation. Increase the proportion of photovoltaic power supply when ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46
CPCY02E10/56
Inventor 白恺柳玉崔正湃王皓靖龙彦杨伟新宋鹏刘京波杜军
Owner STATE GRID CORP OF CHINA