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Energy storage system tracking plan power output method and device for accessing new energy source power generation

An energy storage system and planned output technology, applied in circuit devices, AC network circuits, and AC network load balancing, etc., can solve problems such as uncontrolled wind/solar output, unfavorable power grid stability for traditional unit operation, and inability to smooth fluctuations. , to achieve the effect of good robustness and easy construction

Active Publication Date: 2017-06-23
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
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Problems solved by technology

[0003] Due to the limitation of energy storage capacity and the unpredictable characteristics of new energy power generation, the state of charge (SOC) of the energy storage system cannot be ignored when tracking the output of the plan. If the SOC reaches the upper or lower limit, the energy storage system will stop working and cannot cooperate with the new energy. The energy generation tracking and dispatching plan is also unable to stabilize fluctuations, and the wind / solar output is out of control, which is not conducive to the operation of other traditional generating units and the stability of the power grid

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  • Energy storage system tracking plan power output method and device for accessing new energy source power generation

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Embodiment Construction

[0062] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0063] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0064] The present invention provides a method for tracking and planning output of an energy storage system connected to new energy power generation, wherein the energy storage system connected...

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Abstract

The invention relates to an energy storage system tracking plan power output method and device for accessing new energy source power generation. The method comprises a step of defining the constraint condition and objective function of an energy storage system and constructing a tracking model comprising a control coefficient, a step of calculating energy storage system power output related to the control coefficient, a step of updating the control coefficient by using a fuzzy adaptive control method, a step of optimizing the energy storage power output by using the updated control coefficient, and finally obtaining optimized energy storage power output, and a step of considering the state of charge of the energy storage system while tracking a plan curve such that the state of charge is in a reasonable range, and stabilizing the fluctuation of power. A function that the energy storage system cooperates with new energy power generation to track a scheduling plan in real time is achieved.

Description

technical field [0001] The invention relates to the technical field of energy storage operation control, in particular to a method and device for tracking planned output of an energy storage system connected to new energy power generation. Background technique [0002] With the rapid development of renewable energy, its volatility and intermittency will adversely affect the power system. Energy storage is an effective means to improve the grid's ability to accept renewable energy. Battery energy storage has become a priority due to its unique performance. One of the directions of development. For photovoltaic power plants or wind farms, the dispatcher will formulate a dispatch plan for the next day based on the predicted value of its power in advance. Due to the randomness of renewable energy power generation, its output cannot be accurately predicted, so the wind / photoelectric power of the next day will vary. There may be a large deviation from the planned output, so the e...

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Application Information

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IPC IPC(8): H02J3/32
CPCH02J3/32H02J2203/20
Inventor 李建林薛宇石徐少华靳文涛惠东
Owner CHINA ELECTRIC POWER RES INST
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