A time-space aggregation method for estimating the variable comprehensive output coefficient of the medium-long-term dispatching of a hydropower station

An aggregation method and technology of hydropower stations, which are applied in data processing applications, instruments, calculations, etc., can solve problems such as large influence of measured data, impact on conventional scheduling and optimization scheduling simulation accuracy, and inability to apply medium and long-term scheduling, etc., to reduce calculation, The effect of improving calculation accuracy

Active Publication Date: 2019-02-12
WUHAN UNIV
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Problems solved by technology

Therefore, the change of k value affects the output simulation calculation of power station dispatching, and the simplified calculation will affect the simulation accuracy of conventional dispatching and optimal dispatching
[0006] In order to calculate the changing k value, the common method is to directly calculate it based on the measured data to find the law between the k value and the water head or other va

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  • A time-space aggregation method for estimating the variable comprehensive output coefficient of the medium-long-term dispatching of a hydropower station
  • A time-space aggregation method for estimating the variable comprehensive output coefficient of the medium-long-term dispatching of a hydropower station
  • A time-space aggregation method for estimating the variable comprehensive output coefficient of the medium-long-term dispatching of a hydropower station

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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] like figure 1 As shown, the time-space aggregation method for the comprehensive output coefficient of hydropower station changes in the medium and long-term dispatch provided by this embodiment includes the following steps:

[0034] 1. According to the measured data, the output range of the power station operation is counted, and based on the characteristic curves of different types of n-h-q units of the power station, the comprehensive output coefficient k value that changes within the operating range of each unit of the power station is calculated.

[0035] First, according to the measure...

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Abstract

The invention discloses a time-space aggregation method for estimating the variable comprehensive output coefficient of medium-long-term dispatching of a hydropower station, comprising the following steps of S1 obtaining the operation actually measured data of the hydropower station, counting the output range of the hydropower station, and calculating the given output values and the units and thethe comprehensive output coefficient k0 value of the power generation head according to the n-h-q characteristic curves of the different types of units; S2 dividing the output range of the hydropowerstation into a plurality of sections, respectively counting the operation time of all the units in each section as the time weight; in each interval, further counting the output of different units asthe spatial weight; S3 establishing a time-space aggregation model, and obtaining the variable comprehensive output coefficient k of the whole hydropower station; S4 establishing the corresponding relation between the comprehensive output coefficient of the whole hydropower station and its corresponding power generation head, and forming k-h curve graph for interpolation. The method of the invention can reduce the calculation error in the medium and long-term dispatching of the hydropower station and improve the calculation precision.

Description

technical field [0001] The invention relates to the technical field of reservoir dispatching, in particular to a space-time aggregation method for deriving the comprehensive output coefficient of mid- and long-term dispatching of hydropower stations. Background technique [0002] Hydropower already dominates renewable energy. Reservoir dispatching is a key link in hydropower generation. In order to further improve energy supply efficiency, there are many studies on improving the efficiency of hydroelectric power generation. Most of these studies focus on the improvement of reservoir operation scheduling rules and the improvement of reservoir optimal scheduling methods. But in fact, medium and long-term conventional dispatching and optimal dispatching simulation of hydropower stations are the basis for evaluating the power generation efficiency of reservoirs. Therefore, ensuring the accuracy of reservoir scheduling simulation calculation is also a part that cannot be ignor...

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 龚文婷刘攀程磊明波
Owner WUHAN UNIV
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