Hydropower station hydropower dispatching plan generation and simulation method based on GIS technology

Abstract

The invention relates to a hydropower station hydropower dispatching plan generation and simulation method based on the GIS technology. The hydropower station hydropower dispatching plan generation and simulation method is characterized by including the steps of firstly, setting up a local terrain spatial database based on a GIS platform; secondly, forecasting a reservoir inflow / outflow amount-time curve based on the expected generating capacity of an upstream hydropower station; thirdly, adjusting the forecasted inflow / outflow amount-time curve based on real-time information such as the water level, the rain condition and the flow and through combination with meteorological and hydrological forecast information and spatial information stored in the first step; fourthly, generating a dispatching plan through the forecasted reservoir inflow / outflow amount-time curve, through combination with hydropower station working condition data and hydropower station dispatching rules, and according to the preset dispatching plan generation model in the system; fifthly, generating the optimal dispatching plan. By means of the hydropower station hydropower dispatching plan generation and simulation method, benefits of different dispatching plans are evaluated for workers, and the method plays a role in assisting the management layer in making a decision.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a method for generating and simulating a hydropower scheduling plan of a hydropower station based on GIS technology. Background technique [0002] The hydropower station dispatching plan is to give full play to the economic benefits of limited resources on the premise of ensuring the safety and reliability of the hydropower station. Specifically, it refers to the purposeful and planned overall planning according to the runoff characteristics and the task requirements of the reservoir in the case of changes in the incoming water and water consumption of the reservoir. It is a technology and measure for arranging reservoir water storage and flood, flood retention and flood discharge, flood control and prosperity, reasonably arranging the operation mode of the hydropower station and the water level and water volume scheduling of the reservoir, so that the h...

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Problems solved by technology

[0003] The optimal dispatching process of a hydropower station is a complex system engineering that involves all aspects of the operation and management of the entire power station. In the dispatching management decision-making process, it often needs to involve a large amount of data and graphic information, such as the hydrology of the watershed, topography, and hydraulic structures. And so on, the internal components are interconnected and mutually restricted, and the relationship is intricate, which is often difficult to describe with simple text diagrams or mathematical models, and the addition of information leads to frequent changes in decision-making, and the traditional dispatching plan simulation is more Curves and tables have to be used to display the calculation results and calculation process. The whole process is not intuitive, which makes it difficult for decision-making managers to intuitively optimize, compare and choose different scheduling schemes.

[0004] Runoff hydropower station groups in small and medium-sized watersheds are dispatched based on experience, and the reservoir dispatching chart is usually used as a tool to guide the operation and dispatching of the reservoir. The reservoir dispatching chart is based on historical hydrological data and a representative typical year is selected as the basis, and the design guarantee rate and guaranteed output It is drawn up on the basis of water flow, but it cannot adapt to changes in objective conditions over time, and it is easy for dispatchers to make mistakes in judgment and lead to waste of water energy

For example, in the flood season, when the inflow of water is very abundant, dare not exceed the indicated output of the dispatching chart, and increase the output in time, it is easy to produce a large amount of concentrated abandoned water, reduce the water utilization rate, lose electric energy, and the water resources cannot be fully obtained. Utilization, cannot meet the current requirements of energy saving, emission reduction, water saving and additional issuance; in addition, dispatching plans are mostly displayed in the form of tables, which are relatively abstract and not intuitive, which is not conducive to the evaluation of dispatching plans

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