A Stochastic Ecological Optimal Scheduling Model of Cascade Reservoirs and Its Solution Method

Abstract

A cascade reservoir ecological stochastic optimal dispatching model and its solution method. The establishment of the optimal dispatching model includes: firstly establishing the objective function of the cascade reservoir ecological stochastic dispatching model with the minimum AAPFD index of the corrected annual flow deviation; and then describing the constraints of the cascade reservoir ecological stochastic dispatching model Conditions, including: water level constraints, discharge flow constraints, storage capacity constraints, and guaranteed output constraints. Using the SARSA algorithm in reinforcement learning to solve the ecological stochastic scheduling model will overcome the curse of dimensionality brought by the stochastic dynamic programming algorithm. The invention can improve the ecological demand on the premise of ensuring the output of cascade reservoir hydropower stations, and has high guiding significance for the ecological utilization of reservoir water resources. At the same time, the proposed SARSA algorithm can obtain the results of the cascade reservoir stochastic ecological optimization dispatching model in a relatively short period of time.

Description

technical field [0001] The invention discloses a cascade reservoir ecological stochastic optimization scheduling model and a solution method, which belong to the field of reservoir optimization scheduling. Background technique [0002] As the renewable energy with the most mature development technology and the largest development scale, hydropower plays an important role in the global power supply due to its low operating cost, good regulation performance and fast load response capability. Reservoirs have beneficial functions such as power generation, flood control, and irrigation. However, in the actual operation of the reservoir, in order to improve the benefits of power generation, it often changes the natural runoff of the river where the reservoir is located, destroys the natural law of river hydrological changes, has a great impact on the ecological environment of the river, and causes the ecological environment of the river to deteriorate. As my country accelerates g...

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Problems solved by technology

However, in the actual operation of the reservoir, in order to improve the benefits of power generation, the natural runoff of the river where the reservoir is located is often changed, which destroys the natural law of the river's hydrological changes, has a great impact on the ecological environment of the river, and causes the ecological environment of the river to deteriorate.

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