Energy storage adjusting system for wind power field

A technology for regulating systems and energy storage systems, applied in flexible AC transmission systems, wind power generation, collectors, etc., can solve the problems of frequent disconnection of wind turbines, grid voltage fluctuations, voltage drops, etc., to improve mechanical and stable power output. , to ensure a stable effect

Inactive Publication Date: 2012-08-29
SHANGHAI POWER ENERGY STORAGE BATTERY SYST ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the sudden instantaneous voltage drop when the wind farm is connected to the grid, resulting in grid voltage fluctuations and frequent disconnection of wind turbines, resulting in greater voltage

Method used

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  • Energy storage adjusting system for wind power field
  • Energy storage adjusting system for wind power field
  • Energy storage adjusting system for wind power field

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Embodiment Construction

[0016] Preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0017] figure 1 It is the principle block diagram of the wind farm energy storage regulation system of the present invention, such as figure 1 As shown in the embodiment, the device includes:

[0018] A wind turbine is installed between the wind farm and the grid-connected transformer to detect the output voltage and current signals of the wind generator and the voltage and current signals of the power grid; the signal control terminal of the wind turbine is connected to a central energy storage control system; The central energy storage control system is connected to a lithium battery energy storage system and a grid-connected bidirectional inverter through the CAN bus; the lithium battery energy storage system is connected in parallel at the connection between the wind turbine output terminal and the grid-connected transformer through the grid-conne...

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Abstract

The invention relates to wind power generation, and discloses an energy storage adjusting system for a wind power field. In the energy storage adjusting system, a wind generating set is arranged between the wind power field and a grid-connected transformer; the signal control end of the wind generating set is connected with a central energy storage control system; the central energy storage control system is connected with a lithium power energy storing system and a grid-connected bidirectional inverter through a CAN (Controller Area Network) bus; and the lithium power energy storing system is connected in parallel to the joint of the output end of the wind generating set and the grid-connected transformer through the grid-connected bidirectional inverter. Due to the adoption of the energy storage adjusting system, the problems of power grid voltage fluctuation and frequent connection failure of the wind generating set caused by momentary voltage sag due to grid connection of the wind power filed, arrangement and implementation of a power scheduling plan after the grid connection, and the like are solved, and the beneficial effects of improving the grid connection performance of the wind power field, stabilizing the power output of a smooth wind power field, prolonging the service life of machinery and electric equipment of the system, ensuring stable power grid frequency, and the like are obtained.

Description

technical field [0001] The invention relates to wind power generation; in particular, it relates to an energy storage regulation system of a wind farm. Background technique [0002] When the wind power farm is connected to the power grid system and transmits green power to the power grid, it may cause many adverse effects on the power grid. These adverse effects are due to the randomness, intermittentness and uncontrollability of the wind. These characteristics of wind lead to different characteristics of wind farms when they are connected to the grid and other conventional energy plants. Specifically, due to the random, intermittent and uncontrollable nature of the wind, it is difficult for the wind turbines in the wind farm to adjust and control the output, which causes fluctuations and random changes in the electrical energy generated by the wind turbines. These fluctuations and random changes further have adverse effects on the voltage and frequency of the power grid. ...

Claims

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Application Information

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IPC IPC(8): H02J3/28H02J3/38H02J7/00
CPCY02E10/76Y02E40/10Y02E70/30
Inventor 冯毅朴海国刘辉张邦玲解晶莹
Owner SHANGHAI POWER ENERGY STORAGE BATTERY SYST ENG TECH
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