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Optimization method and system of wind storage combined system based on Bollinger band theory

A technology of wind-storage integration and system optimization, applied in wind power generation, energy storage, reducing/preventing power oscillation, etc., can solve the problems of low prediction accuracy, insufficient output level of tracking plan, poor power grid frequency regulation ability, etc., to improve control effect of effect

Pending Publication Date: 2021-11-16
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the actual process of wind power generation, affected by the fluctuation and randomness of wind energy, combined with the frequent power changes caused by the unbalanced power generation output and power demand, and the low prediction accuracy of wind power power in the future, it makes The existing wind-storage combined system still has the problems of poor power grid frequency regulation capability and insufficient follow-up plan output level

Method used

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  • Optimization method and system of wind storage combined system based on Bollinger band theory
  • Optimization method and system of wind storage combined system based on Bollinger band theory
  • Optimization method and system of wind storage combined system based on Bollinger band theory

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Embodiment 1

[0035] Such as figure 1 and figure 2 As shown, this embodiment shows an optimization method for a combined wind-storage system based on the Bollinger band theory, which specifically includes the following steps:

[0036] Step S1. Select the control mode of the combined wind-storage system. Specifically, it refers to selecting the required control mode for the combined wind-storage system according to the dispatching instructions issued by the dispatch center to the combined wind-storage system, that is, the operating mode of the combined wind-storage system. The control mode includes a frequency regulation mode and a tracking plan mode. In the frequency regulation mode, the combined wind storage system participates in the frequency regulation work of the power grid, while in the track plan mode, it only tracks the planned value and does not participate in the power grid frequency regulation work.

[0037] When the dispatching center issues an AGC (Automatic Generation Contr...

Embodiment 2

[0114] Such as Figure 9 As shown, this embodiment shows an optimization system of a combined wind-storage system based on the Bollinger band theory, which specifically includes:

[0115] The control mode selection module M1 is used to select the control mode of the combined wind-storage system; the control mode includes a frequency modulation mode and a tracking plan mode;

[0116] The optimal control model building module M2 is used to construct an optimal control model of the combined wind-storage system according to the control mode;

[0117] The optimal control model solving module M3 is used to solve the optimal control model of the wind-storage combined system by adopting the rolling-ahead optimal control method to obtain the solution result;

[0118] The energy storage output adjustment module M4 is used to adjust the energy storage output of the wind-storage combined system according to the solution result;

[0119] The energy storage SOC optimization module M5 is use...

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Abstract

The invention relates to an optimization method and system of a wind storage combined system based on the Bollinger band theory, and belongs to the field of wind power plant optimization. The method comprises the steps that: firstly, a control mode of the wind storage combined system is selected, wherein the control mode comprises a frequency modulation mode and a tracking plan mode; according to the control mode of the wind storage combined system, an optimal control model of the wind storage combined system is constructed; then the optimization control model of the wind storage combined system is solved by adopting an advanced rolling optimization control method, and the energy storage output condition of the wind storage combined system is adjusted according to a solving result; and finally, whether the wind storage combined system needs to be optimized or not is judged, if the wind storage combined system needs to be optimized, the wind storage combined system is optimized by adopting an energy storage SOC optimization method based on the Bollinger band theory to obtain a planned output adjustment value, and the planned output adjustment value is reported to a dispatching center so as to be adjusted. Thus, the planned output tracking level and the frequency modulation capability of the wind storage combined system can be effectively improved.

Description

technical field [0001] The invention relates to the field of wind-storage combined system optimization, in particular to an optimization method and system for a wind-storage combined system based on Bollinger Band theory. Background technique [0002] Wind energy is a kind of green renewable energy that is widely used at home and abroad. In recent years, my country's wind power industry has developed very rapidly. However, with the large-scale grid connection of wind power and the randomness, volatility and intermittency of wind energy itself, the safe and stable operation of the power system is affected. One of the effective ways to solve this problem is the wind-storage combined system. The combined wind storage system is a system in which the energy storage system and the wind farm are jointly operated. In recent years, the combined wind storage system has become one of the research and development hotspots in the field of wind power generation. [0003] However, in th...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32H02J3/24
CPCH02J3/38H02J3/32H02J3/241H02J2203/20H02J2300/28Y02E10/76Y02E70/30
Inventor 李滨邓有雄蒙旭光陈碧云白晓清李佩杰祝云阳育德韦化
Owner GUANGXI UNIV
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