Multi-basin typical hydrological year selection method based on power generation capacity of hydropower station

Abstract

The invention discloses a multi-basin typical hydrological year selection method based on the power generation capacity of a hydropower station. The method includes: according to the power power generation capacity of each hydropower station in the area year by year, calculating the annual total power generation of the hydropower station group in the region; drawing an annual total power generation capacity empirical frequency curve of the hydropower station group in the region; according to an annual total power generation capacity empirical frequency curve of the hydropower station group inthe region, deriving an annual total power generation capacity theoretical curve of the hydropower station group in the region; and then obtaining a typical annual total power generation capacity value of the hydropower station group in the region according to the annual total power generation capacity theoretical curve and the design guarantee rate of the hydropower station group in the region, and finally calculating a typical hydrological year of the hydropower station group in the region according to the typical annual total power generation capacity value of the hydropower station group in the region and the annual total power generation capacity of the hydropower station group in the region. According to the method, the multi-basin hydropower station group in the region can be used as a whole, the correlation and complementarity of incoming water among basins are considered according to the set output characteristics of the multi-basin hydropower stations, and the typical hydrological year is accurately selected.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for selecting a typical hydrological year in multiple basins based on the power generation capacity of a hydropower station. Background technique [0002] Hydrological year is a commonly used term in hydrology and water conservancy design, and hydrological year is relative to calendar year. A calendar year usually starts on January 1st and ends before January 1st of the following year according to the calendars of different countries. The main difference between a hydrological year and a calendar year is that the start and end months are determined by hydrological laws rather than directly from astronomical laws. In addition to obeying astronomical laws, the hydrological cycle is mainly controlled by changes in the intensity of solar radiation. Theoretically speaking, the hydrological year is based on the laws of the earth's hydrological cycle, and is calculate...

AI Technical Summary

Problems solved by technology

However, the distribution of hydropower stations in the region is not entirely from the same watershed, but distributed in multiple watersheds, and the upstream and downstream of the same watershed also have different hydrological characteristics due to the influence of incoming water from intervals

The existing simple superposition method easily leads to inaccurate selection of typical hydrological years

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