Multi-core parallel and optimized dispatching method for large-scale cascade hydropower station group

Abstract

The invention discloses a multi-core parallel and optimized dispatching method for a large-scale cascade hydropower station group. Sub-groups are divided, wherein the calculation scale of an initial group is obtained from a main thread to serve as a father task scale, a general threshold value calculation formula of a Fork / Join parallel frame is adopted to divide a father task into no less than one subtask smaller in scale, the father task scale is equally divided into two subtasks identical in scale through recursive disintegration each time till the scales of subtasks are smaller than or equal to threshold values, and disintegration is stopped; sub-threads simultaneously calculate respective allocated subtasks, wherein the subtasks allocated to the sub-threads are identical in group scale, and optimal solutions of the subtasks are calculated by adopting an self-adaptive hybrid particle swarm optimization algorithm having the same calculation parameters; the optimal solutions are output, wherein the optimal solutions of all the subtasks are merged when the sub-threads complete calculation of all the subtasks, and an overall optimal solution is screened out and returned to the main thread. The parallelization of the method is achieved, the solving efficiency is improved, the thread standby time is shortened, and the thread utilization rate is improved.

Description

technical field [0001] The invention relates to the technical field of hydropower, in particular to a multi-core parallel optimal scheduling method for large-scale cascade hydropower station groups. Background technique [0002] With the emergence of cascade hydropower stations on the Wujiang River, Lancang River, Hongshui River, and Jinsha River in Southwest my country, the research on optimal dispatching methods for such large-scale hydropower systems has become particularly important. The salient feature of this cascade hydropower station group is that there are many stages of power stations. For example, there are 11 hydropower stations planned in the Wujiang River Basin, and 9 of them have been built; 9 power stations will be built; 12 power stations are planned in the middle and lower reaches of the Jinsha River, and 6 power stations have been built. The large number of hydropower stations in a group of hydropower stations means that the hydraulic and electrical conne...

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Problems solved by technology

However, these frameworks cannot effectively adapt to the serial method of Java language development, and are difficult to apply to the parallel development and transformation of Java-coded programs.

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