Measuring and calculating method of water level control improved efficiency of cascade hydropower stations and system

A technology for cascade hydropower station group and water level control, which is applied in information technology support systems, calculations, instruments, etc., can solve the problems of unreasonable calculation and large scope of electric power assessment.

Inactive Publication Date: 2017-08-04
GUIZHOU WUJIANG HYDROPOWER DEV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, the dispatching chart only depends on the current water level when used, but in the actual dispatching process, the formulation of the dispatching strategy should not only consider the current water level situation, but also th

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  • Measuring and calculating method of water level control improved efficiency of cascade hydropower stations and system
  • Measuring and calculating method of water level control improved efficiency of cascade hydropower stations and system
  • Measuring and calculating method of water level control improved efficiency of cascade hydropower stations and system

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Example Embodiment

[0061] Example one

[0062] Specifically, the method for measuring and calculating the efficiency of cascade hydropower station group water level control provided by the embodiment of the present invention, such as figure 1 As shown, including the following steps:

[0063] Step S1: Calculate the monthly assessment index of the reservoir water level control coefficient according to the actual monthly average water level of the reservoir in the past ten years, the design dead water level of the reservoir, the normal high water level of the reservoir design, and the data of the reservoir dispatch map; and calculate the monthly score calculation formula according to the water level control coefficient assessment index Reverse the target range of reservoir water level control;

[0064] Step S2: Calculate the actual power generation based on the load data of each unit day by day and time period.

[0065] Step S3: According to the actual operation of the reservoir, the initial water level, ...

Example Embodiment

[0100] Example two

[0101] In another embodiment, the present invention also provides a method for measuring and calculating the efficiency of cascade hydropower station group water level control. The specific method steps are as follows:

[0102] In the aforementioned calculation method for improving the efficiency of water level control of cascade hydropower stations, the key lies in the calculation of the assessment power. When calculating the assessment power, the water level interval corresponding to the monthly score of 15 to 18 points for the reservoir water level control coefficient is used as the target interval for the assessment of the water level at the end of the month. And use linear interpolation to obtain the target interval of ten-day water level. In non-flood seasons, the initial value of the guaranteed output is used for trial calculations. When the final water level falls within the target range, power is generated according to the guaranteed output; when the f...

Example Embodiment

[0152] Example three

[0153] In this embodiment of the present invention, based on the method for measuring and calculating the efficiency of water level control of cascaded hydropower stations in the first and second embodiments, a benefit evaluation system for optimal dispatching of cascaded hydropower stations in a basin is built to realize the improvement of water level control of the cascade hydropower stations. The efficiency measurement method specifically includes: client layer, service layer and data storage layer; said client layer includes system management module, basic data management module, index system module, benefit evaluation module, report management module; said system management The module is used for operations such as adding, deleting, modifying, and querying users, and setting user roles and passwords; the basic information management module is used to manage and maintain the basic parameters and characteristic curves of the power station and query relate...

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Abstract

The invention relates to a measuring and calculating method of the water level control improved efficiency of cascade hydropower stations. The method includes following steps: calculating a water level control target interval of a reservoir; calculating a practical generating capacity; calculating an examination electric quantity; determining a value of the responsible abandoned water power; calculating the storage capacity differential electric quantity; and calculating the water level control improved efficiency according to the practical generating capacity, the examination electric quantity, the responsible abandoned water power, and the storage capacity differential electric quantity. The invention also relates to an optimization dispatching benefit evaluation system of basin cascade hydropower stations in order to realize the measuring and calculating method of the water level control improved efficiency of the cascade hydropower stations, and the system specifically comprises a client layer, a service layer and a data storage layer. According to the method and the system, the problem of large influence of the water level at the beginning of the year on a hydropower utilization increase rate traditional algorithm is solved, and the unreasonable condition that the dispatching of the power stations often operate in a dead water level according to a design dispatching chart when the water level is low at the beginning of the year and the inflow is low is greatly improved.

Description

technical field [0001] The invention relates to the technical field of optimal dispatching of cascade hydropower station groups in a river basin, in particular to a method for measuring and calculating the water level control and efficiency improvement of cascade hydropower station groups and a benefit evaluation system for optimal dispatching of cascade hydropower station groups in a river basin. Background technique [0002] The improvement rate of water energy utilization is an important index to measure the effectiveness of optimal dispatching of hydropower stations. The assessment of the improvement rate of water energy utilization is of great significance for promoting water regulation work and making full use of water energy resources. The improvement rate of water energy utilization is the ratio of the water-saving and increased power generation of hydropower stations to the assessed power. The assessment electricity is calculated according to the actual water flow i...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06312G06Q10/0639G06Q50/06Y04S10/50
Inventor 于文革戴建炜朱江杨明山过团挺田毛王俊莉王磊何勇于洁
Owner GUIZHOU WUJIANG HYDROPOWER DEV
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