Multi-regional fully distributed active distribution network economic dispatching method

Abstract

The invention relates to a multi-regional fully distributed active distribution network economic dispatching method and belongs to the field of electric power system operation and control technology, and the method comprises the steps: 1) establishing an active distribution network economic dispatching model for considering linearizing transmission losses and minimum light discarding cost; 2) realizing localization quasi-Newton matrix iteration initial value construction, localization quasi-Newton direction iterative computation and localization step size searching calculation for regions through neighbor boundary node communication; 3) judging whether global convergence is achieved through the neighbor communication after regional convergence. According to the invention, the method aims at operating characteristics of an active distribution network, point-to-point communication technology are fully utilized, on the basis of fully distributed quasi-Newton method, the method complete active distribution network economic dispatching multi-regional fully distributed superlinear convergence computation without a coordination center, the reliability is improved, privacy of the regions is protected, and plug-and-play is realized.

Description

technical field [0001] The invention relates to a multi-area fully distributed active distribution network economic scheduling method, which belongs to the technical field of power system operation and control. Background technique [0002] As more and more distributed resources such as distributed power sources, controllable loads, and electric vehicles are added to the distribution network, the distribution network has changed from the traditional passive grid to a more active form, and each user in the distribution network is no longer Mere consumers become productive consumers, i.e. active distribution grids. The above-mentioned new distribution network form requires participants to interact effectively with the grid, and can also accommodate distributed renewable energy and realize plug-and-play functions, which makes the traditional centralized energy management method subject to increased computing burden and communication Latency issues. At the same time, the power...

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Problems solved by technology

The above-mentioned new distribution network form requires participants to interact effectively with the grid, and can also accommodate distributed renewable energy and realize plug-and-play functions, which makes the traditional centralized energy management method subject to increased computing burden and communication delay problem

At the same time, the power distribution side will present multi-stakeholders (such as load aggregators) in the future, and the data of each subject will have valuable value. Therefore, the issue of privacy protection will become more prominent. Through limited information communication between neighbors, It is a very good solution to realize the collaborative optimization of multiple subsystems or regions, but most of the more mature algorithms today only have linear or sub-linear convergence characteristics, and the calculation speed of large systems still needs to be improved. Distributed optimization algorithm is very important

[0003] At present, the distribution network mostly adopts centralized or decomposed and coordinated calculation methods. Because of the existence of the central controller, they cannot meet the requirements of the future active distribution network. The traditional economic dispatch method will encounter a large amount of calculation and high communication delay. , poor information protection and low reliability bottlenecks

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