Micro power grid wind and solar energy storage model prediction control method

A model predictive control and micro-grid technology, applied in photovoltaic power generation, wind power generation, energy storage, etc., can solve problems such as difficult prediction, large prediction error, and low prediction accuracy, and achieve the requirements of improving operating characteristics and reducing accuracy. Make up for the effect of low precision

Active Publication Date: 2015-10-07
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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Problems solved by technology

[0003] The uncertainty of wind power and photovoltaic output is large, it is difficult to predict, and its prediction accuracy is also very low, and the longer the forecast is in advance, the greater the forecast error
The integration of wind power and phot

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  • Micro power grid wind and solar energy storage model prediction control method
  • Micro power grid wind and solar energy storage model prediction control method
  • Micro power grid wind and solar energy storage model prediction control method

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[0052] The present invention will be further described below in conjunction with the drawings and embodiments.

[0053] A predictive control method for wind and solar storage models of microgrid includes the following steps:

[0054] Step (1): Predict the maximum output of wind turbines and photovoltaic power generation in the microgrid within a certain period of time through the prediction model;

[0055] Step (2): Taking the maximum output of wind power and photovoltaic power predicted in step (1) as constraints, perform online optimization of the output of wind turbines, photovoltaic power generation and energy storage batteries in the microgrid, and give the three in a certain period of time in the future Reference output;

[0056] Step (3): According to the real-time adjustable capacity of wind turbines and photovoltaic power generation, feedback and adjust the reference output of wind and solar energy storage in step (2) at the moment of control.

[0057] The predictive model in ...

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Abstract

The invention discloses a micro power grid wind and solar and energy storage model prediction control method, comprising steps of establishing a prediction model, predicting the maximal output of photovoltaic generation and a wind power set in the micro power grid in the future set time frame by the prediction model, using the predicted the wind power and photovoltaic maximal output as a constraint condition to perform on-line optimization on the output of the wind power set in the micro power grid, the photovoltaic generation and the storage battery to provide reference output, and performing feedback adjustment on the reference outputs of the wind power set, the photovoltaic generation and the energy storage battery according to the real-time adjustable capacity of the wind power set and the photovoltaic generation. Compared with the traditional micro power grid control method, the micro power grid wind and solar energy storage prediction control method reduces the accuracy requirement for the prediction model in the uncertainty process, remedies the defects that the wind power and photovoltaic prediction model is low in prediction accuracy and the high uncertainty in output, and effectively improves the operation characteristics of the micro power grid.

Description

technical field [0001] The invention relates to a model predictive control method of wind-solar-storage-storage in a microgrid. Background technique [0002] Distributed power generation has the advantages of resource and environment friendliness and flexible power supply. The development of distributed power generation on the basis of centralized power generation and large power grid has become an inevitable trend in the development of smart grids at home and abroad. According to the national energy development plan, by 2020 my country's distributed power generation installed capacity will account for 9%, which is an important part of the power supply system. In order to solve the problems brought about by the grid connection of distributed generation, the concept of microgrid was put forward. Based on domestic and foreign research results, microgrid refers to a micro power supply network based on distributed power generation technology, mainly based on renewable energy, u...

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Application Information

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IPC IPC(8): H02J3/46H02J3/32
CPCY02E10/56Y02E10/76Y02E70/30
Inventor 杨冬苏欣麻常辉陈璇慈文斌张鹏飞潘志远刘超男王亮周春生武乃虎张丹丹邢鲁华李文博蒋哲
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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