A pumped-storage power station combined wind-solar hybrid system and its optimization method

Abstract

The invention discloses a pumped-storage power station combined wind-solar complementary system and an optimization method thereof, belonging to the technical field of wind-solar-storage combined power generation systems. Through the transformation of the available space of the abandoned mine, a hybrid power generation system that combines the underground pumped storage power station and the surface wind-solar hybrid power generation system is built, with the wind-wind hybrid system, pumped storage power station, grid transmission power and other operating indicators as constraints , to obtain the minimum output fluctuation of wind-solar hybrid system, the minimum output fluctuation of combined system and the optimal configuration model of tracking load curve; finally, the improved simulated annealing algorithm is used to solve and optimize the model. This invention makes full use of the storage and power generation capacity of the underground pumped storage power station, and combines the complementary characteristics of wind and solar resources to make the joint system more flexible in adjusting output, making the effect of the total output tracking the load curve better, and making the system more responsive to the new Energy absorption capacity is better.

Description

technical field [0001] The invention belongs to the technical field of wind-solar-storage hybrid power generation systems, and in particular relates to a pumped-storage power station combined wind-solar complementary system and an optimization method thereof. Background technique [0002] Some long-running underground mines were forced to withdraw from the market due to obsolete equipment and backward technology and were left idle. This not only wastes land resources, but also easily causes problems such as surface subsidence and soil erosion. Based on the existing conditions of abandoned underground mines, it is transformed into an underground pumped storage power station combined with a wind-solar hybrid power generation system, which not only solves the problem of reusing the underground space of idle mines, but also saves The construction of the pumped-storage power station re-excavated the funds for the underground space, and at the same time achieved multiple goals suc...

AI Technical Summary

Problems solved by technology

[0004] Most of the traditional wind-solar-pumped-storage combined systems analyze the surface pumped storage power station only as an energy storage device in the comprehensive system, and do not make full use of its flexible storage and generation characteristics to adjust output. In addition, the optimization research of the system mostly focuses on the minimum cost and Maximize the revenue as the optimization goal, without considering the situation of output tracking scheduling curve

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