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Energy storage system and arc discharge processing method thereof

A technology of energy storage system and processing method, which is applied in the field of energy storage system and its arc processing, and can solve problems such as failure of energy storage system scheduling and failure of power system stability

Pending Publication Date: 2022-04-19
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing technology, when an arc fault is detected, the entire energy storage system will be controlled to shut down, resulting in failure of energy storage system scheduling. At this time, its stabilizing effect on the entire power system will fail.

Method used

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  • Energy storage system and arc discharge processing method thereof
  • Energy storage system and arc discharge processing method thereof
  • Energy storage system and arc discharge processing method thereof

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Embodiment Construction

[0046] 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.

[0047] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "com...

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Abstract

The invention provides an energy storage system and an arc discharge processing method thereof, and the method comprises the steps: firstly, judging whether a power transmission branch of each DC / DC converter has a DC arc or not according to an arc characteristic signal corresponding to each DC / DC converter in the energy storage system; if at least one power transmission branch has the DC arc, controlling the power of the corresponding DC / DC converter to be reduced to a preset range, and controlling other DC / DC converters to operate at corresponding preset power; thus, shutdown of the whole energy storage system when the arc fault is detected is avoided, and the energy storage system can continue to achieve the stabilization effect on the electric power system.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an energy storage system and an arc processing method thereof. Background technique [0002] As an important part of the power system, energy storage technology can effectively improve the stability of the power system, eliminate the difference between day and night peaks and valleys, and smooth the load; it can also stabilize the output fluctuations of renewable energy, eliminate its impact on the power system, and promote sustainable development. Development of renewable energy. Compared with other energy storage technologies, battery energy storage system (Battery EnergyStorage System, BESS) has the advantages of high energy density, fast response speed, high charge and discharge multiples, and low construction environment requirements. The capacity battery energy storage system is integrated into the grid. [0003] With the widespread application of battery energy...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J3/32
CPCH02J7/00304H02J7/0048H02J7/00712H02J7/007182H02J3/32Y02E40/10
Inventor 耿后来曹伟
Owner SUNGROW POWER SUPPLY CO LTD