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Regional energy internet uncertain optimal scheduling method and system

An energy internet and optimal dispatching technology, which is applied to AC networks with different sources of the same frequency, AC network circuits, load forecasting in AC networks, etc. And other issues

Active Publication Date: 2018-08-03
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

At present, some studies have applied multi-scenario technology to describe intermittent distributed power sources or uncertain load fluctuations in the power grid, most of which only discuss the uncertainty on a certain time section, or consider multiple sections, while Neglecting the correlation of power fluctuations on adjacent time nodes, there are uncertainties that are complicated to calculate and difficult to describe

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  • Regional energy internet uncertain optimal scheduling method and system
  • Regional energy internet uncertain optimal scheduling method and system
  • Regional energy internet uncertain optimal scheduling method and system

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Embodiment Construction

[0078] In order to better understand the present invention, the content of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0079] Aiming at the uncertain scheduling problem of the current active distribution network, the present invention considers the time correlation of the output error of the uncertain unit in the active distribution network, and proposes a multi-time-scale uncertain scheduling based on Markov chain-multi-scenario technology Scheduling model. Include the following steps:

[0080] Firstly, the scene generation model combined with Markov chain is established, and uncertain sampling is performed on wind power output, photovoltaic output and uncertain load to generate a large number of scenes; The typical scenarios are determined and cut down to obtain typical scenarios; finally, a multi-time-scale scheduling optimization model is established, that is, a long-term scale active distribution net...

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Abstract

The invention relates to a regional energy internet uncertain optimal scheduling method and a regional energy internet uncertain optimal scheduling system. The regional energy internet uncertain optimal scheduling method comprises the steps of: acquiring random variable data; generating a plurality of scenes based on error probability distribution of the random variables; reducing the plurality ofscenes to obtain a typical scene; processing the typical scene to obtain a discrete combinatorial optimization scene; performing optimization by means of a long-time uncertain optimal scheduling model according to the discrete combinatorial optimization scene, and correcting an optimization result according to a short-time rolling correction model. The regional energy internet uncertain optimal scheduling method and the regional energy internet uncertain optimal scheduling system are conductive to improving distributed energy penetration rate, cope with uncertain fluctuations of an intermittent energy source, and alleviate the scheduling pressure of the next-level time scale.

Description

technical field [0001] The invention relates to the field of power system operation and control, and in particular to a regional energy internet uncertain optimal dispatching method and system. Background technique [0002] The active distribution network has the advantages of being able to actively adjust the power flow distribution, manage a variety of distributed energy sources, and improve the utilization efficiency of distributed energy sources. Among them, the feeder interconnection through the flexible DC device can complete the power exchange between the interconnected networks, realize the flexible regulation of controllable resources in a wider range, and further improve the ability to absorb intermittent energy. With the access of distributed energy with high penetration rate to the active distribution network, its randomness and volatility have brought many uncertain factors to the dispatching optimization of the distribution network: first, the uncertainty of ou...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20H02J3/003
Inventor 李烨蒲天骄陈乃仕范士雄杨占勇杨洋卫泽晨韩巍王伟刘幸蔚吴锟李蕴黄仁乐贾东强汪伟王存平孙健王海云
Owner CHINA ELECTRIC POWER RES INST
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