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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

AI Technical Summary

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 the future water inflow situation, and the upper and lower basic dispatching lines of the dispatching map The range in the middle is relatively large, and it is not reasonable enough to calculate the assessment power based on the scheduling chart

Method used

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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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Effect test

Embodiment 1

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

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

[0064] Step S2: Calculate the actual power generation according to the load data of each unit on a daily and time-period basis.

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

Embodiment 2

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

[0102] In the above-mentioned calculation method of cascade hydropower station group water level control and efficiency improvement, the key lies in the calculation of the assessment electricity. When calculating the assessment electricity, the water level interval corresponding to the monthly score of the reservoir water level control coefficient of 15 points to 18 points is used as the target interval of the month-end assessment water level. And use linear interpolation to obtain the ten-day water level target interval. In the non-flood season, the guaranteed output is used as the initial value for trial calculation. When the final water level falls within the target range, the guaranteed output is used to generate electricity; when the final water level...

Embodiment 3

[0153] This embodiment of the present invention builds a watershed cascade hydropower station group optimization scheduling benefit evaluation system based on the method for measuring and calculating the water level control efficiency of the cascade hydropower station group in Embodiment 1 and Embodiment 2, which is used to realize the water level control of the cascade hydropower station group. The method for calculating efficiency specifically includes: a client layer, a service layer, and a data storage layer; the client layer includes a system management module, a basic data management module, an index system module, a benefit evaluation module, and a report management module; the system management module The module is used for user addition, deletion, modification, query and other operations as well as user roles and password settings; the basic information management module is used for managing and maintaining the basic parameters and characteristic curves of the power sta...

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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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