Decomposition coordination optimization method for water-light complementary scheduling large system

Abstract

The invention discloses a decomposition coordination optimization method for a water-light complementary scheduling large system, and the method comprises the steps: carrying out the quantitative analysis of the absorption condition of water-light power generation, including the calculation of water-light superposition output, and the calculation of the electric quantity of the water-light superposition output exceeding a power transmission channel in a photovoltaic overall fluctuation period, which is called overflow capacity G; when the water-light superposition output in the photovoltaic overall fluctuation period does not exceed the power transmission channel, calculating the residual space capable of increasing the output in the photovoltaic overall fluctuation period, and the space is called water capacity F; hydroelectric critical output information is calculated; and judging whether a water abandoning phenomenon occurs or not according to the optimal long-term hydropower scheduling, and carrying out coordinated optimization by adopting different scheduling models. According to the invention, on the basis of guaranteeing the annual energy output of hydropower, the hydropower electric quantity transfer in medium and long periods is realized, the channel is made if the photovoltaic power is large, and the channel is compensated if the photovoltaic power is small, thereby fully reducing the abandoned photovoltaic power and achieving the effect of optimal water-light absorption electric quantity.

Description

technical field [0001] The invention relates to reservoir dispatching technology, in particular to a method for decomposing, coordinating and optimizing a large-scale water-light complementary dispatching dispatching system. Background technique [0002] Hydropower and photovoltaics are important components of clean energy. Although photovoltaics are developing rapidly, photovoltaic output has uncontrollable characteristics such as "intermittency, randomness and volatility". During peak photovoltaic power generation, excess photovoltaics cannot be stored. The phenomenon of a large number of abandoned light has limited the development of the photovoltaic industry. Among the three main types of clean energy, wind, solar and water, hydropower with reservoir regulation and storage capacity is not only easy to adjust hydropower output in terms of dispatching methods, but also has a considerable scale effect of hydropower, which can be used as an intermediate medium for various un...

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Problems solved by technology

[0002] Hydropower and photovoltaics are important components of clean energy. Although photovoltaics are developing rapidly, photovoltaic output has artificial and uncontrollable characteristics such as "intermittent, random, and volatile." During the peak hours of photovoltaic power generation, surplus photovoltaics cannot be stored However, a large number of abandoned light phenomena have limited the development of the photovoltaic industry.

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