Network province two-stage multi-power short-period coordination peak shaving method

Abstract

The invention belongs to the field of power generation scheduling of power systems and discloses a network province two-stage multi-power short-period coordination peak shaving method. On a network province two-stage coordination platform, the operation characteristics of different types of power sources such as water, fire, pumping storage and nuclear power can be given full play to on the basis of the daily load complementary characteristic of a plurality of provincial level power grids, and the peak shaving requirements of the multiple power grids are coordinately met. According to the technical scheme, an original problem is decomposed into a pumping storage sub-problem, a conventional hydropower sub-problem, a conventional thermal power sub-problem and a conventional nuclear power sub-problem which are independent of one another according to the types of the power sources, and a pumping storage heuristic search algorithm, a water and electricity hybrid dimensionality reduction algorithm and a thermal power load shedding peak shaving algorithm are adopted for solving the sub-problems; on the basis, system loads are used as correlation factors, the preceding algorithms and an internetwork electric power distribution quadratic programming method are coupled to form a coordination framework of the sub-problems, electric power distribution of power stations among the multiple power grids is adjusted through iteration, and the differential peak value load requirements of the multiple provincial level power grids are met. Through the method, the multiple power sources and the multiple power grids can efficiently and coordinately run, a regional power grid network debugging power source peak shaving effect can be played better compared with actual scheduling, and the method is efficient and practical.

Description

technical field [0001] The invention relates to the field of electric power system power generation dispatching, in particular to a short-term coordinated peak-shaving method of two-level multi-power sources in a network province. Background technique [0002] In the past 10 years, with the development of my country's national economy and the improvement of living standards, my country's power grids generally face severe peak-shaving problems, especially in East China, North China, and South China, where peak-shaving resources are scarce. It is a very important way and means to realize the optimal allocation of power resources between multiple power grids through the large power grid platform, taking advantage of the differences in load characteristics and power supply characteristics between grids and provincial two-level dispatching platforms to alleviate the pressure of peak regulation. Different from the previous single provincial power grid peak shaving problem, the gri...

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Problems solved by technology

[0003] At present, scholars at home and abroad have made many research results and progress with reference and practical value in modeling and solving the problem of power grid peak regulation. The application of power grid dispatching does not adapt to the actual situation of multiple power source dispatching in my country's current regional power grids, and is far from meeting the needs of my country's fast-growing grid-province two-level dispatching operation. Practical modeling and solving methods are urgently needed

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