Multi-power grid peak-shaving load distribution method combined with subsection smoothing method and neighborhood search algorithm

Abstract

The invention belongs to the field of water and electricity dispatching operation, and discloses a multi-power grid peak-shaving load distribution method combined with a subsection smoothing method and a neighborhood search algorithm. By the adoption of the method, the load smoothing requirements of a plurality of provincial level power grids under a large power grid platform can be met, power grid local remaining load 'burrs' can be avoided or reduced as far as possible, and accordingly common peak shaving of the power grids can be achieved. According to the technical scheme, according to the power grid load peak valley trend and the receiving electric quantity, the subsection smoothing method is used for dividing the whole day into a plurality of sections, a plurality of adjacent time period remaining loads in all subsections are homogenized, and thus an ideal solution can be constructed; the difference value quadratic sum and minimum of a calculation solution and the ideal solution are used as a target, the neighborhood search algorithm is used for dynamically changing a feasible search region, so that the convergence rate and the result quality are improved, and therefore the calculation result approaches the ideal solution continuously. By means of the multi-power grid peak-shaving load distribution method, under the condition that the power grid peak-shaving amplitude is not lowered, remaining load curves of the provincial level power grids can be more smoothed, a more reasonable load condition is provided for the stable operation of the power grids, a better peak-shaving effect is achieved, and the method is suitable for dispatching and managing most of regional power grids in China.

Description

technical field [0001] The invention relates to the field of hydropower dispatching and operation, in particular to a multi-network peak-shaving load distribution method combined with a segmented smoothing method and a neighborhood search algorithm. technical background [0002] Power grid peak regulation is to make the power station generate more power during the peak load period by rationally arranging the high-quality power output plan to meet the peak load of the system, reduce the peak-valley difference of the remaining load, and at the same time keep the remaining load as stable as possible to reduce regulation Power sources such as thermal power with poor performance are frequently turned on and off to achieve mutual aid between water and fire, ensuring safe, energy-saving, and economical operation of the power grid. Difficulty in peak regulation is a common and prominent problem currently faced by most power grids in my country. With the integration of intermittent n...

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Problems solved by technology

[0003] At present, there are few relevant research results at home and abroad on the research and solution methods for multi-grid peak-shaving load distribution problems, and most of the research focuses on the discussion of single-grid peak-shaving load distribution problems

However, with the formation of UHV interconnected power systems across the country, it will become more and more important to coordinate inter-provincial and inter-regional power distribution to improve the response to peak loads. The traditional peak load distribution method has been unable to give full play to the advantages of large power grid platforms. Meet the comprehensive utilization requirements of large power grids

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