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Hydropower output fluctuation frequency recognition method and system based on time domain and magnitude

A technology of hydropower output and identification method, which is applied in the field of water resource analysis and can solve problems such as not being able to adapt to fluctuations

Active Publication Date: 2021-01-08
DADU RIVER HYDROPOWER DEV
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Problems solved by technology

At present, the domestic and foreign analysis of the fluctuation situation of hydropower output mainly focuses on the fluctuation analysis of the whole process of hydropower output. The need to pay more attention to fluctuations of a specific magnitude in a specific time domain

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  • Hydropower output fluctuation frequency recognition method and system based on time domain and magnitude
  • Hydropower output fluctuation frequency recognition method and system based on time domain and magnitude

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Embodiment Construction

[0047] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be introduced below in conjunction with the embodiments of the present invention and the accompanying drawings.

[0048] The embodiment of the present invention comprises the following steps, and computer software technology can be used to realize automatic operation during specific implementation:

[0049] Step 1, analyzing the hydropower output time series, the hydropower output time series is obtained in the Cartesian coordinate system, according to the process of hydropower output, with time x as the abscissa and hydropower output q as the ordinate (such as figure 1 shown); the analysis process includes analyzing the time series of hydropower output into a broken line composed of several points, assuming that there are a total of T points, which are respectively used as control points and numbe...

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Abstract

The invention discloses a hydropower output fluctuation frequency recognition method and system based on time domain and magnitude. According to the method, a hydropower output time sequence is analyzed into a broken line which is formed by the connection of a plurality of points. Firstly, the whole hydropower output time sequence is divided into a plurality of sub-time sequences according to thetime domain length, discrete values of all the sub-time sequences and the change degree of the change rate are calculated, the magnitude dimensions, the form dimensions and the overall fluctuation ofall the sub-time sequences are determined, and then the magnitude ranges of the magnitude dimensions, the form dimensions and the overall fluctuation are determined; the occurrence frequency of the magnitude dimensions, the form dimensions and the overall fluctuation are in the corresponding magnitude range are counted to obtain a fluctuation frequency analysis result of the hydropower output, andthe larger the frequency is, the more severe the fluctuation of the hydropower output in the corresponding magnitude range is. According to the method, a new technical scheme is provided for quantitative analysis of hydropower output fluctuation situations, hydropower output fluctuation degree analysis is facilitated, decision support is provided for reservoir scheduling, and the method is of great significance to water resource development and utilization.

Description

technical field [0001] The invention belongs to the field of water resource analysis, in particular to a method and system for identifying the frequency of fluctuations in hydropower output based on time domain and magnitude. Background technique [0002] The research on the fluctuation frequency of hydropower output is mainly used for the analysis of the stable operation of hydropower stations, and then provides decision support for reservoir dispatching with the goals of flood control, power generation, and ecology. Accurate hydropower output fluctuation situation identification is of great significance for strengthening flood control safety and scientific and efficient use of water resources. At present, the domestic and foreign analysis of the fluctuation situation of hydropower output mainly focuses on the fluctuation analysis of the whole process of hydropower output. Fluctuations of a specific magnitude within a specific time domain require more attention. In view o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q10/06G06Q50/06G06F113/08
CPCG06F30/20G06Q10/0637G06Q50/06G06F2113/08
Inventor 黄会宝高志良罗家英王勇飞
Owner DADU RIVER HYDROPOWER DEV
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