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A Simplified Modeling Method for Energy Storage Doubly-fed Wind Farm

A technology for simplifying models and modeling methods, applied in wind power generation, electrical digital data processing, and special data processing applications, etc., can solve problems such as low accuracy and difficulty in realization, and achieve increased simulation time scale, clear physical meaning, and high The effect of applying value

Inactive Publication Date: 2016-06-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] 3. A dynamic equivalent modeling method for doubly-fed turbine wind farms based on the action of the pitch angle (CN101937483A), which solves the problems of low accuracy and difficulty in existing equivalent modeling methods

Method used

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  • A Simplified Modeling Method for Energy Storage Doubly-fed Wind Farm

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0024] Taking an actual energy storage wind farm as an example, the wind farm includes 33 1.5MW double-fed wind turbines, which are divided into two groups, A and B. There are 5MW energy storage equipment, and the simplified model of the energy storage wind farm is established. The steps are as follows:

[0025] 1. Establish a simplified model of doubly-fed wind turbine based on the principle of vector directional control technology

[0026] For the doubly-fed wind turbine, the invention retains the mechanical characteristics of the wind turbine, ignores the influence of the flux change of the generator and the high-frequency disconnection of the converter, and the equivalent value of the doubly-fed ...

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Abstract

The invention relates to a method for establishing an energy-storage type double-fed wind power plant simplified model. A double-fed wind turbine generator and a storage battery energy-storage system are equivalent into an equivalent circuit formed by connecting an ideal controlled current source and an electric reactor in parallel, a double-fed wind turbine generator model and a storage battery energy-storage system model are respectively established according to the vector orientation control technology principle and are connected to form the energy-storage type double-fed wind power plant simplified model, and the model is solved according to the phasor method. The establishing and solving method for the energy-storage type double-fed wind power plant simplified model are suitable for simulating all wind turbine generators and energy-storage systems in the wind power plant for a long time, and the method can be applied to the fields of wind power plant equivalent establishing, wind power plant and energy-storage type wind power plant power coordination control strategy researches and the like and has high application value.

Description

technical field [0001] The invention belongs to the field of wind power generation, and relates to energy storage technology for wind power generation, in particular to an energy storage type double-fed wind farm simplified model modeling method. Background technique [0002] Due to the intermittent, fluctuating and random characteristics of wind power generation, the impact of large-scale wind farm access on the power grid has attracted great attention. The battery energy storage system has the ability to independently regulate active power and reactive power, and the configuration of energy storage devices at the wind farm end can improve the grid-connected capacity of the wind farm. However, the service life of the battery energy storage system is greatly affected by the number and depth of charging and discharging. Therefore, it is necessary to study the power coordination control strategy of the wind turbine and the energy storage system in the wind farm. The successfu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38G06F17/50
CPCY02E10/76
Inventor 米增强刘力卿
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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