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Coordinated peak regulation method for cascade hydropower group and wind-solar power station in high-hydroelectric-specific-gravity system

A technology for hydropower stations and high hydropower, applied in the field of electrical information, can solve problems such as a large amount of abandoned water and the inability to give full play to the role of hydropower regulation.

Active Publication Date: 2019-08-13
国家电网公司西南分部
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional hydropower dispatching methods of "determining water by electricity" and "determining electricity by water" will cause a large amount of water to be discarded or cannot fully play the role of hydropower regulation

Method used

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  • Coordinated peak regulation method for cascade hydropower group and wind-solar power station in high-hydroelectric-specific-gravity system
  • Coordinated peak regulation method for cascade hydropower group and wind-solar power station in high-hydroelectric-specific-gravity system
  • Coordinated peak regulation method for cascade hydropower group and wind-solar power station in high-hydroelectric-specific-gravity system

Examples

Experimental program
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Effect test

Embodiment

[0100] In order to study the ability of the cascade hydropower group to accept the output of new energy such as wind and wind, and the peak-shaving capability of the cascade hydropower group, the following three calculation examples are set up.

[0101] Calculation example 1: The penalty for abandoning wind and light is set to 1;

[0102] Calculation example 2: The penalty for abandoning wind and light is set to 0.1;

[0103] Calculation example 3: The penalty for abandoning wind and light is set to 0.

[0104] The results of calculation examples 1-3 are shown in Table 1, and the obtained residual load is as follows Figure 4 shown. from Figure 4 It can be seen from the figure that there are two obvious peaks on Tuesday. Compared figure 1 , figure 2 with image 3 It can be found that the output of the wind farm is almost 0 at these two moments, and the adjustable cascade hydropower station is almost at full power, and the wind and water system can no longer provide mo...

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Abstract

The invention discloses a coordinated peak regulation method for a cascade hydropower station group and a wind-solar power station in a high-hydropower-specific-gravity system, and considers the uncertainty of the output of the wind-solar power station, and utilizes the advantage that the output of the cascade hydropower station group is adjustable to stabilize the load fluctuation as much as possible and reduce the peak regulation pressure of a thermal power generating unit by increasing the capacity of the system for receiving the output of the wind-solar power station. A proposed coordinated peak regulation optimization operation strategy of the cascade hydropower station and the wind-solar power station gives consideration to the convenient solving of a model, and performs the linear processing on a nonlinear hydropower conversion function; by utilizing the advantage that the output of the cascade hydropower group is adjustable, the method improves the wind-solar receiving capability of the system, achieves the coordinated peak regulation of the cascade hydropower group and the wind-solar power station, and reduces the thermal power peak regulation pressure.

Description

technical field [0001] The invention belongs to the technical field of electric information, and in particular relates to a coordinated peak regulation method for a cascade hydropower group and a wind and solar power station in a high hydropower specific gravity system. Background technique [0002] With the development of the global economy, all countries are facing problems such as the depletion of fossil energy, environmental pollution and global warming, which seriously affect the survival and sustainable development of human beings. New energy such as wind energy and solar energy has the advantages of wide distribution, cleanness, environmental protection, and sustainability, and has been vigorously developed and utilized. However, the uncertainty of wind power generation has made the problem of wind power consumption increasingly prominent. As the clean energy with the highest development ratio at present, hydropower has good peak-shaving characteristics and can well ...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/38
CPCH02J3/383H02J3/386H02J3/46H02J3/381H02J2203/20Y02E10/56Y02E10/76
Inventor 刘勤魏明奎蔡绍荣江栗
Owner 国家电网公司西南分部
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