A method and system for peak-shaving dispatching of multi-power grids of hydropower stations in large river basins

Abstract

The invention discloses a multi-grid peak shaving dispatching method and a system of hydropower stations in a super-large basin, belonging to the technical field of high-efficiency utilization of water resources and optimal dispatching of hydropower systems. The realization of the method comprises: constructing a multi-grid peak shaving dispatching model of hydropower stations in a super-large basin; Knowledge rules are used to obtain the initial scheduling process of each sub-problem. The hydropower station group in super large basin is decomposed into several single hydropower station dispatching sub-problems, the output process of each hydropower station is optimized by using discrete differential dynamic programming, and the output process of each hydropower station is reasonably distributed among multiple power networks by using linear programming. Finally, the convergence condition is satisfied by iterative computation. As compare with that traditional method, the invention organically integrates the advantage of knowledge rules, discrete differential dynamic programming, linear programming and the like, and can quickly obtain a dispatching process that takes into account theoperation constraint of the sending-end power station, the transmission capacity limitation and the receiving-end load demand.

Description

technical field [0001] The invention belongs to the field of high-efficiency utilization of water resources and optimal dispatching of hydropower systems, and more specifically relates to a peak-shaving dispatching method and system for multi-power grids of hydropower stations in a super-large river basin. Background technique [0002] The southwest region of my country is rich in hydropower resources, but most of the local economies are relatively backward and the consumption capacity is insufficient; the eastern region has a relatively developed economy and a large energy demand, but the installed capacity of local power sources is insufficient, and there is serious peak-shaving pressure. In order to improve the efficiency of resource utilization, my country has planned and constructed several transmission lines to transmit hydropower from southwest to central and eastern regions across provinces. This has also made it normal for hydropower stations in super-large river bas...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above deficiencies or improvement needs of the prior art, the present invention provides a method and system for peak-shaving dispatching of multi-power grids of hydropower stations in large watersheds, thereby solving how to establish a system that fully considers the operational constraints of sending-end power stations, transmission capacity limitations, and receiving-end power stations. Multi-grid peak-shaving scheduling model of load demand and technical problems of effective solution

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