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Storage battery control method smoothing power fluctuation based on wind power prediction and system thereof

A technology for wind power prediction and power fluctuation, applied in wind power generation, reactive power adjustment/elimination/compensation, reactive power compensation, etc. Difficulty in controlling power quality-related indicators, grid frequency, voltage deviation and stability, etc.

Inactive Publication Date: 2012-03-07
HOHAI UNIV
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Problems solved by technology

[0002] Because wind power is greatly affected by natural meteorological conditions, the power output of wind farms (that is, wind farms) fluctuates greatly, which may lead to deviations and stability problems in grid frequency and voltage, and at the same time increase the power system dispatching and reserve capacity. Difficulty in controlling indicators related to power quality

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  • Storage battery control method smoothing power fluctuation based on wind power prediction and system thereof
  • Storage battery control method smoothing power fluctuation based on wind power prediction and system thereof
  • Storage battery control method smoothing power fluctuation based on wind power prediction and system thereof

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Embodiment Construction

[0029] The specific content and beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] Cooperate figure 1 As shown, it is a structural block diagram of the storage battery control system based on wind power prediction and smooth power fluctuation of the present invention, including a data collector 1, a wind power prediction system 2, a data analyzer 3, a control module 4, a storage battery 5, a wind farm 9 and a circuit breaker device 10, wherein the data collector 1 is used to collect the active power output by the wind farm 9 and the state of charge of the storage battery 5, and send the results to the wind power prediction system 2 and the data analyzer 3 respectively; the wind power prediction system 2 according to The received data and the actual data and predicted value of the previous time period are used to predict the current period, and the result is sent to the data analyzer 3; the outpu...

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Abstract

The invention discloses a storage battery control system smoothing power fluctuation based on wind power prediction. The system comprises a data collector, a wind power prediction system, a data analyzer, a control module, a storage battery, a wind power generation field, and a breaker. The data collector acquires active power outputted by the wind power generation field and a charged state of the storage battery, and sends a result to the wind power prediction system and the data analyzer. According to received data, actual data of a previous time segment and a predicted value, the wind power prediction system carries out prediction on a present time segment and sends a result to the data analyzer. According to the received data, the data analyzer carries out comparison determination and outputs a control instruction to the control module according to a comparison result. An output terminal of the control module connects with the breaker which connects the storage battery with an electrical network. The control module controls connection and disconnection of the breaker according to an instruction. According to the system, power fluctuation and cell capacity can be reduced, and electric energy quality can be improved. The invention also discloses a storage battery control method.

Description

technical field [0001] The invention relates to a control method and system for solving wind farm power output fluctuations and reducing battery capacity, and belongs to the field of improving wind farm power quality. Background technique [0002] Because wind power is greatly affected by natural meteorological conditions, the power output of wind farms (that is, wind farms) fluctuates greatly, which may lead to deviations and stability problems in grid frequency and voltage, and at the same time increase the power system dispatching and reserve capacity. and the difficulty of controlling indicators related to power quality. [0003] In order to alleviate the impact of wind power fluctuations on the power system, energy storage systems are expected to be widely used in wind farms. Too much energy storage system capacity will increase the cost of wind power generation systems. Therefore, according to system requirements, try to reduce the impact of storage capacity on wind po...

Claims

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Application Information

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IPC IPC(8): H02J3/28H02J3/18
CPCY02E10/76Y02E40/30Y02E70/30
Inventor 潘文霞傅中兴何海平王鹏飞全锐
Owner HOHAI UNIV
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