Medium-and-long-term reservoir scheduling method considering remote correlation factor and automatic control system

Abstract

The invention provides a medium-and-long-term reservoir scheduling method considering a remote correlation factor and an automatic control system. The scheduling method comprises the following steps:step 1, establishing a reservoir optimal scheduling model, and determining an objective function and a constraint condition; step 2, using deterministic incoming water data, and using a dynamic programming algorithm to solve a deterministic optimal scheduling trajectory; step 3, determining a remote correlation factor possibly influencing the research area, and collecting data information in the same time period as the storage runoff; step 4, calculating a correlation coefficient between the scheduling decision and the factors, and determining the factors with relatively strong correlation andtime; step 5, determining a scheduling function of a dependent variable scheduling decision and independent variable reservoir system factors and remote correlation factors by adopting a stepwise regression method; and step 6, calculating a value of the scheduling decision, and determining a reservoir capacity value which should be reached by the reservoir at the end of the time period for scheduling of the reservoir at the time period. According to the method, the influence of reservoir system external factors on scheduling can be fully considered, and the scheduling result is optimized.

Description

technical field [0001] The invention belongs to the technical field of reservoir dispatching and operation, and in particular relates to a mid- and long-term reservoir dispatching method and an automatic control system considering telecorrelation factors. [0002] technical background [0003] Reservoir regulation achieves the purpose of benefiting and eliminating harm by changing the temporal and spatial distribution of natural runoff. Reservoir dispatching rules are an important basis to guide reservoir operation, and dispatching function is a more general reservoir dispatching tool that can consider various dispatching information. The accuracy of reservoir dispatching function affects the benefit of dispatching operation. [0004] At present, the common reservoir scheduling function is linear, that is, by analyzing the operating elements of the reservoir, seeking the relationship between various variables and scheduling decisions, such as inflow flow, reservoir water sto...

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Problems solved by technology

[0005] The following problems exist in the existing technology: (1) The dispatching function only considers the internal factors of the reservoir system, and does not consider the influence of the external factors of the system on the dispatching function; (2) The dispatching function has a single form and fails to integrate more The influencing factors of are included in the scheduling function

These problems affect the objectivity and optimality of the dispatching function, which may lead to the dispatching decision made based on the dispatching function is not the optimal decision, and the comprehensive benefit of the reservoir cannot be maximized.

For example, if the scheduling decision in this period causes the reservoir to release too much water, it will lead to insufficient schedulable water in the subsequent period, which will affect the profit and benefit in the subsequent period; If the period is in the flood season, it may also bring flood control risks

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