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Energy storage system controller design method based on backstepping model predictive control

A model predictive control and energy storage system technology, applied to AC network circuits, electrical components, circuit devices, etc., can solve problems such as slow dynamic response speed, large fluctuations in DC voltage of energy storage inverters, and excessive computation

Pending Publication Date: 2022-01-18
STATE GRID JIANGSU ELECTRIC POWER CO LIANYUNGANG POWER SUPPLY CO +1
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Problems solved by technology

[0004] Although the above methods have solved some problems to a certain extent, they have not been able to effectively solve the problems of large fluctuations in the DC voltage of the energy storage inverter and slow dynamic response speed, and have solved the problems of the energy storage inverter in time to a certain extent. The problem of large fluctuations in the DC voltage of the converter and the slow dynamic response speed also introduces other problems such as excessive calculation

Method used

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  • Energy storage system controller design method based on backstepping model predictive control
  • Energy storage system controller design method based on backstepping model predictive control
  • Energy storage system controller design method based on backstepping model predictive control

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Embodiment Construction

[0072] In order to make the purpose, technical solutions and advantages of the application clearer, the following will further describe the implementation of the application in detail in conjunction with the accompanying drawings.

[0073] First combine the following figure 1 It is a schematic flowchart of an energy storage system controller design method based on inverse model predictive control provided by the embodiment of this application.

[0074] Please refer to figure 2 , which is a topological diagram of the grid-connected structure of the energy storage converter provided in the embodiment of the present application. Grid-connected energy storage converters mainly include batteries and grid-connected converters. Among them, the battery provides energy, and the grid-connected converter is responsible for transmitting energy.

[0075] Such as image 3 As shown, it is a functional block diagram of an energy storage system controller design method based on inverse mo...

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Abstract

The invention provides an energy storage system controller design method based on backstepping model predictive control, and the method is characterized in that the method comprises the steps: building an energy storage grid-connected inverter mathematical model; sending the virtual control quantity serves as reference current and to an inner loop controller through backstepping control; and optimizing the prediction model. According to the method provided by the invention, the virtual control quantity is directly used as the reference current to be sent to the inner loop controller, so that multiple derivation on the virtual control quantity is avoided, and the complexity of controller design is reduced.

Description

technical field [0001] This application relates to the technical field of power system energy storage controllers, in particular to a design method for energy storage system controllers based on inverse model predictive control. Background technique [0002] With the rapid development of my country's economy and the deep changes in the form of urban power supply and consumption, high-reliability power supply and high-penetration distributed energy-friendly access have put forward higher requirements for the safe and reliable operation of the power grid. However, because electric energy cannot be stored in large quantities, the traditional power grid operation mode is the so-called "fire and use" state, and a dynamic balance between power generation and power consumption needs to be maintained. When a disturbance occurs in the system, it will cause power imbalance, and then serious It will affect the safe and stable operation of the power grid. Energy storage plays a pivotal...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/381H02J3/32H02J2203/20
Inventor 张自伟程振华伏祥运于跃韩伟岳付昌李响谭恒兵黄淮
Owner STATE GRID JIANGSU ELECTRIC POWER CO LIANYUNGANG POWER SUPPLY CO
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