Energy storage system optimization method and system based on wind/photovoltaic/energy storage power station
An energy storage system and optimization method technology, applied in photovoltaic power generation, system integration technology, information technology support system, etc., can solve problems such as the lack of integration of the two modes, so as to prolong life, reduce the number of times energy storage is used, and avoid deep charging deep effect
Active Publication Date: 2021-09-28
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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However, there is currently no control strategy that integrates the two modes.
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[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0067] The purpose of the present invention is to provide an energy storage system optimization method and system based on wind-solar-storage combined power station, so as to meet the requirements of fluctuation rate and relative tracking error at the same time, and prolong the life of energy storage.
[0068] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described...
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The invention relates to an energy storage system optimization method and system based on a wind / photovoltaic / energy storage power station. The method comprises the following steps: acquiring related data of the wind / photovoltaic / energy storage power station; determining an ideal output value of the energy storage system at each moment in the mode of stabilizing the wind-light power fluctuation and an ideal output value of the energy storage system at each moment in the mode of tracking the output plan control according to the related data; fusing the ideal output values at each moment in the two modes, and determining actual output values of the energy storage system under different weights; determining an average fluctuation ratio and an average relative tracking error under different weights according to the actual output values of the energy storage system under different weights; determining a Pareto front according to the average volatility and the average relative tracking error; and determining a weight satisfaction solution of the energy storage system on the Pareto frontier by taking the charging and discharging times of the energy storage system as an optimization target. The method can meet the requirements of the volatility and the relative tracking error at the same time, and prolongs the energy storage life.
Description
technical field [0001] The invention relates to the field of new energy power generation, in particular to an optimization method and system for an energy storage system based on a wind-solar-storage combined power station. Background technique [0002] The current status quo is that each wind-solar storage station lacks a scheduling platform and control strategy that supports multi-energy interaction. The wind-solar storage station cannot simultaneously handle issues such as tracking power generation plans and wind-solar power fluctuations. The system operation efficiency is low, and it is difficult to tap the active support capacity of energy storage. , seriously restricting the new energy grid-connected capacity and power quality level. [0003] Due to the influence of weather and geographical factors, wind speed and wind direction will change frequently, and photovoltaic output is also closely related to weather changes. Changes in light intensity and temperature will af...
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IPC IPC(8): H02J3/32H02J3/24H02J3/46G06Q10/04G06Q50/06
CPCH02J3/32H02J3/24H02J3/46G06Q10/04G06Q50/06H02J2300/24H02J2300/28Y04S10/50Y02E70/30Y02E40/70Y02E10/56
Inventor 林忠伟张子涵赵泽邹祖冰刘瑞阔
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)