Short-term power generation dispatching method for cascade hydropower station group based on coupling of clustering analysis and decision-making tree

Abstract

The invention, which belongs to the field of hydroelectric dispatching operation, relates to a short-term power generation dispatching method for cascade hydropower station group based on coupling ofa clustering analysis and a decision-making tree. A power matching relationship between upstream and downstream power stations is determined by linear regression; on the basis of the matching relationship, typical output curves of all power stations are obtained by clustering among massive actual data, classified training is carried out on factors that affect power generation dispatching and include a daily planned power value, a reservoir water level, and a grid characteristic and the like and a typical output process, and a cascade generation dispatching decision-making library is constructed to determine a joint dispatching plan of the upstream and downstream power stations quickly by using a decision-making tree method conveniently; and then fine output adjustment is carried out by introducing a constraint correction strategy, thereby ensuring the result feasibility. Therefore, a generation dispatching plan of a cascade hydropower station can be obtained quickly based on a power generation boundary condition; the method has the high practicability; and a novel technical path is provided for short-term power generation dispatching of cascade hydropower stations in a one-reservoir multi-cascade state.

Description

technical field [0001] The invention relates to the field of hydropower dispatching operation, in particular to a cascade hydropower station group short-term power generation dispatching method coupled with cluster analysis and decision tree. Background technique [0002] The hydropower system of the super large watershed in Southwest my country has generally formed a "one reservoir and multi-level" dispatching operation situation. The common feature is that the large-scale reservoir with better regulation performance is the leader, and the downstream is equipped with one or more stages with high water head, small storage capacity and relatively low regulation capacity The purpose of the poor hydropower station is to make full use of the adjustment and storage function of the "leading" reservoir and improve the overall water energy utilization efficiency of the basin cascade. In the "one-reservoir and multi-level" basin, there are cascade power stations sensitive to flow or h...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the difficulty in compiling the power generation plan of cascade hydropower stations with water head or flow sensitivity and the practicality of the results. The results can be used to construct power generation dispatching decisions using knowledge discovery technology from the operation data of massive cascade hydropower stations library, and then quickly determine the appropriate power plant output process according to the actual power generation dispatching conditions, and improve the practicability of the results

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