Rainfall runoff forecasting system

Abstract

The invention discloses a rainfall runoff forecasting system. An innovative rainfall runoff forecasting technical scheme is adopted, short, medium and long term rainfall runoff forecasting can be achieved, the real-time flood forecasting process can be displayed in forecasting, which is beneficial for accurately estimating the flood peak, the flood volume and the process of flood, the processes of discharge out of a reservoir and the water level are simulated in the forecasting process, short, medium and long term runoff forecasting scheduling including real-time flood forecasting of a user is achieved, and the problems that at present, the forecasting process of most runoff forecasting software is too short, and the medium and long term forecasting function is poor are solved. The system comprises a water regimen database, a user parameter configuration module, a rainfall runoff forecasting and calculating module, a forecasting result statistics module and a forecasting graph module. The system has the automatic forecast correcting function and is not provided with a gauging station and capable of achieving real-time rainfall flood forecasting as well, software and hardware cost of the system is greatly reduced, and the problem that most small and medium-sized reservoirs, hydropower stations and some large and medium-sized hydropower stations are short of medium and long term forecasting is solved.

Description

technical field [0001] The invention relates to the technical field of rainfall runoff forecasting, in particular to a method for simultaneously performing short-term, medium-term, long-term and real-time rainfall runoff forecasting. Background technique [0002] Runoff forecasting is an important basis for flood control and drought relief, effective use of water resources, and water conservancy dispatching and management. The power generation and social benefits of forecasting dispatching management are significantly higher than those of dispatching management models that do not use forecast information. Today's runoff forecasting system is mainly based on water level monitoring. Short-term rainfall and runoff forecasts, river flood forecasts and real-time flood forecasts considering real-time corrections are carried out with the data collected by rainfall monitoring. The medium and long-term forecasting methods in today's society are not mature enough, and there are only a ...

AI Technical Summary

Problems solved by technology

[0002] Runoff forecasting is an important basis for flood control and drought relief, effective use of water resources, and water conservancy dispatching and management. The power generation and social benefits of forecasting dispatching management are significantly higher than those of dispatching management models that do not use forecast information. Today's runoff forecasting system is mainly based on water level monitoring. Short-term rainfall and runoff forecasts, river flood forecasts and real-time flood forecasts considering real-time corrections are carried out with the data collected by rainfall monitoring. The medium and long-term forecasting methods in today's society are not mature enough, and there are only a few large reservoirs in China for medium and long-term rainfall and runoff forecasting systems. It has been applied, but it does not have the conditions for promotion and popularization

Water level or flow monitoring telemetry stations generally require water level wells or monitoring stations, and the cost is at least tens of thousands to hundreds of thousands. Generally, small reservoirs and small hydropower stations have less investment in infrastructure, and the degree of automation is low. The supporting runoff forecasting system There is almost none. The development cost of software and hardware of the runoff forecasting system is high, the investment in infrastructure is large, and the maintenance cost is expensive, or some medium and long-term rainfall runoff forecasts are complicated from theory to implementation, which is not conducive to promotion. These factors are small and medium-sized reservoirs and hydropower stations. Improve the bottleneck of water resource utilization. For example, as of the end of 2010, Fujian province has built 6,606 rural hydropower stations. Relatively speaking, there are very few reservoirs and hydropower stations with runoff forecasting systems. Many large reservoirs and hydropower stations only have short-term runoff forecasting systems. Medium and Long-term Runoff Forecasting System

These small and medium-sized reservoirs and hydropower stations have lost tens of millions of benefits due to the blind use of water resources due to the lack of real-time flood forecasts and medium- and long-term runoff forecasts. Casualties and property damage due to lack of adequate preparation or due to too short a forecast period to make emergency preparations

Images