On-line control method of big climbing rate event of battery energy storage stabilized photovoltaic power generation

A photovoltaic power generation and battery energy storage technology, which is applied in photovoltaic power generation, electrical components, energy storage, etc., can solve the problems of inability to realize online control of energy storage, and achieve the goal of improving photovoltaic utilization, photovoltaic power generation suppression, and reducing configuration capacity Effect

Inactive Publication Date: 2018-04-13
STATE GRID SHANDONG ELECTRIC POWER +1
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[0004] However, the above-mentioned literatures are all based on the premise that the photovoltaic prediction model has no error, and the effective regulation of photovoltaic grid-connected power can be realized.
At present, the average

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  • On-line control method of big climbing rate event of battery energy storage stabilized photovoltaic power generation
  • On-line control method of big climbing rate event of battery energy storage stabilized photovoltaic power generation
  • On-line control method of big climbing rate event of battery energy storage stabilized photovoltaic power generation

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[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0034] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses an on-line control method of a big climbing rate event of battery energy storage stabilized photovoltaic power generation. The on-line control method of the big climbing rate event of battery energy storage stabilized photovoltaic power generation comprises the following steps: confirming MPC control variables based on the statistical results of the duration of climbing events throughout a year, wherein the MPC control variables comprise control period, control time domain and optimizing time domain; confirming charging and discharging rules according to the energy storage capacity of the energy storage system and the photovoltaic climbing rate in the MPC control time domain; confirming the action state of the energy storage system at the next moment; establishing aMPC optimizing control model; and executing the calculation results by the energy storage system according to the idea of rolling optimization. According to the invention, the stabilizing is performed only aiming at the big climbing rate events that the photovoltaic output fluctuation exceeds a certain range, therefore, the configuration capacity and charging and discharging times of the energy storage system can be reduced; and the control error for the energy storage system is reduced through continuous rolling optimization, therefore, photovoltaic power generation can be effectively stabilized.

Description

technical field [0001] The invention relates to an online control method for battery energy storage to stabilize a large ramp-up event of photovoltaic power generation. Background technique [0002] With environmental pollution and energy crisis, photovoltaic power generation has been favored more and more. Since my country's vigorous development of photovoltaic power generation began in 2011, by the end of 2016, the cumulative installed capacity of photovoltaic power generation had reached 77.42 million kilowatts, ranking first in the world. However, since the power of photovoltaic power generation is affected by various factors such as weather, solar radiation, and temperature, it has strong volatility and randomness. As the penetration rate increases, large-scale photovoltaic grid integration will have adverse effects on the grid. Therefore, how to improve the power quality of photovoltaic power generation and reduce the harm of photovoltaic grid-connected to the power ...

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Application Information

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IPC IPC(8): H02J3/32H02J3/38
CPCH02J3/32H02J3/383H02J2203/20Y02E10/56Y02E70/30
Inventor 林琳林祺蓉马杰刘博王俏俏瞿寒冰杨福霍健王悦李晓琦
Owner STATE GRID SHANDONG ELECTRIC POWER
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