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Storage and transmission cooperative stochastic programming method considering probability model of wind-storage combined system

A stochastic planning and joint system technology, applied in wind power generation, energy storage, AC network load balancing, etc., can solve problems that have not been fully considered

Inactive Publication Date: 2018-04-27
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

[0004] In addition, in the stochastic planning research of the transmission network based on uncertainty theory, the impact of energy storage charging and discharging behavior on the power injection probability model of the wind-storage grid-connection point when the energy storage system is configured on the wind farm side has not been fully considered, and then ignored. The impact of these behaviors on transmission network planning

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  • Storage and transmission cooperative stochastic programming method considering probability model of wind-storage combined system
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  • Storage and transmission cooperative stochastic programming method considering probability model of wind-storage combined system

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[0111] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0112] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0113] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations th...

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Abstract

The invention discloses a storage and transmission cooperative stochastic programming method considering a probability model of a wind-storage combined system. The storage and transmission cooperativestochastic programming method comprises the steps of: establishing a storage and transmission probability model containing the wind-storage combined system; performing stochastic description on a probability distribution model and injection node power; and calculating to obtain a wind-storage stochastic programming model containing the wind-storage combined system. The storage and transmission cooperative stochastic programming method comprehensively considers influence of energy storage configuration and charge-discharge strategies thereof on power transmission network planning, generates awind-storage combined output probability model, performs probabilistic load flow calculation, and establishes a stochastic programming model that considers both energy storage capacity configuration and power transmission network planning simultaneously. According to the storage and transmission cooperative stochastic programming method, wind-storage combined output range constraints and overloadconstraints are introduced into the model, the reasonable compromise between the energy storage wind power fluctuation stabilizing level and energy storage configuration cost and between the risk resisting capability of the system and line cost is realized, the weak links of the system can be comprehensively mastered, and the establishment of a flexible, economical and highly adaptable strong gridstructure is facilitated.

Description

technical field [0001] The invention relates to the technical field of collaborative planning of power system energy storage and transmission lines, in particular to a storage and transmission collaborative stochastic planning method considering the probability model of the wind-storage combined system. Background technique [0002] Transmission network planning involves a large number of uncertain factors, especially the increasing penetration of wind-storage combined systems in modern power grids. The randomness of wind power and the charging and discharging behavior of energy storage systems have injected new uncertain factors into the grid. Planning outcomes have a big impact. Therefore, using the probabilistic risk method to deal with these uncertain factors reasonably and effectively is the key to solving modern transmission network planning problems. [0003] In recent years, there have been many research results on stochastic planning of transmission network conside...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/32H02J3/386H02J2203/20Y02A30/60Y02E10/76Y02E70/30
Inventor 杨佳俊魏延彬刘洋王寿星刘涛马骁旭张洪帅李季李岩苏将涛韩涛
Owner STATE GRID SHANDONG ELECTRIC POWER
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