A control method and system for an energy storage system

A technology of an energy storage system and a control method, applied in the field of renewable energy output control, can solve problems such as low utilization rate of energy storage, and achieve the effects of saving energy, reducing energy exchange, and improving utilization rate of energy storage

Active Publication Date: 2021-05-07
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present application provides an energy storage system control method and system to solve the problem of low energy storage utilization rate in the energy storage system control method in the prior art

Method used

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  • A control method and system for an energy storage system
  • A control method and system for an energy storage system
  • A control method and system for an energy storage system

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Embodiment 1

[0073] see figure 1 , figure 1 It is a schematic flowchart of an energy storage system control method provided in the embodiment of the present application. Depend on figure 1 It can be seen that the energy storage system control method in this embodiment mainly includes the following processes:

[0074] S1: Initialize the operating parameters of the energy storage system controller.

[0075] In this embodiment, the initialization of the operating parameters of the energy storage system controller is mainly to set the main parameters of the energy storage system controller and start the control process.

[0076] The energy storage system in this embodiment takes BESS (Battery Energy Storage System, battery energy storage system) as an example. figure 2 It is a schematic diagram of the structure of the wind storage combined system in the embodiment of the present application, that is, the structural composition diagram of a typical wind storage combined power generation sy...

Embodiment 2

[0148] exist Figure 1-Figure 7b On the basis of the illustrated embodiment see Figure 8 , Figure 8 It is a schematic structural diagram of an energy storage system control system provided in the embodiment of this application. Depend on Figure 8 It can be seen that the control system in this embodiment mainly includes: initialization module, wind power prediction information calculation module, fluctuation component calculation module to be canceled, SOC adjustment power calculation module, energy storage system charge and discharge command synthesis module, charge and discharge control module and cycle The module has seven parts. The control system is set inside the energy storage system controller.

[0149] Wherein, the initialization module is used to initialize the operating parameters of the energy storage system controller. The wind power prediction information calculation module is used to calculate the wind power prediction information according to the phase l...

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Abstract

The present application discloses a control method and system for an energy storage system. The method includes: initializing the operating parameters of the energy storage system controller, calculating the wind power according to the phase lag characteristics of the fluctuation component extraction algorithm, the operating parameters, and the historical wind power output sequence. The power prediction information is integrated into the fluctuation component extraction algorithm based on CMAF filtering to calculate the fluctuation component to be canceled, and integrated into the energy management algorithm to calculate the SOC adjustment power. Discharging instruction, according to which the charging and discharging of the energy storage system is controlled. The system includes: initialization module, wind power prediction information calculation module, fluctuation component calculation module to be eliminated, SOC adjustment power calculation module, energy storage system charge and discharge command synthesis module, charge and discharge control module and cycle module. Through this application, the utilization rate of the energy storage system can be effectively improved, and the method is more concise and intuitive, and the application threshold is lowered, which is convenient for popularization and application.

Description

technical field [0001] The present application relates to the technical field of renewable energy output control in power grids, in particular to an energy storage system control method and system. Background technique [0002] With the progress of science and technology and the development of economy, the development and utilization of renewable energy has become more and more in-depth, and the grid-connected scale of wind power, photovoltaic and other renewable energy sources has also continued to expand. At the same time, the volatility and randomness of renewable energy power sources have increasingly significant impacts on the safe and stable operation of the power grid and power quality, and have gradually become an important factor restricting the continued expansion of renewable energy power sources. In view of this situation, how to use the energy storage system to smooth the output power fluctuations of renewable energy sources, so as to improve the stability and c...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H02J3/32H02J3/38
CPCH02J3/32Y02E10/76Y02E70/30
Inventor施啸寒张恒旭赵雅文王晓磊刘洋魏传芝肖天李泽宇石淼岩周博曦
OwnerSHANDONG UNIV