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Electrical equipment and power fluctuation suppression method, device and system thereof

A power fluctuation suppression, electrical equipment technology, applied in circuit devices, reducing/preventing power oscillation, photovoltaic power generation, etc., can solve problems such as grid paralysis, power step fluctuation, current overshoot, etc. The effect of running and avoiding damage

Inactive Publication Date: 2018-12-07
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Power grid failure, engineering installation and maintenance, multi-component commutation dynamic switching, unit mode conversion, etc. lead to DC bus voltage adjustment, flicker, drop, current overshoot, and power step fluctuations of electrical equipment, which will lead to electrical equipment such as optical storage air conditioners. The system crashes and the power grid is partially paralyzed, affecting the reliability of the unit and user experience
[0003] For example: in the actual air conditioner installation and maintenance site, bus voltage flicker and power step fluctuation during drop will lead to voltage drop of 46V within 100ms, current flicker of 26A, power step fluctuation of 400W, resulting in unstable control of the unit and protection shutdown

Method used

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  • Electrical equipment and power fluctuation suppression method, device and system thereof
  • Electrical equipment and power fluctuation suppression method, device and system thereof
  • Electrical equipment and power fluctuation suppression method, device and system thereof

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Embodiment Construction

[0048] 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. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0050] At the same time, it should be understood that, for the convenience of d...

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Abstract

The invention discloses electrical equipment and a power fluctuation suppression method, device and system thereof. The electrical equipment power fluctuation suppression method comprises the steps ofobtaining the current DC bus voltage and the current DC bus current at a predetermined time interval; determining the current power variation according to the current DC bus voltage and the current DC bus current; judging whether the current power variation is greater than or equal to a predetermined power variation value or not; adjusting at least one of the current DC bus voltage and the current DC bus current in the case that the current power variation is greater than or equal to the predetermined power variation value so as to enable the current power variation to be less than the predetermined power variation value. The electrical equipment power fluctuation suppression method can prevent the energy impact through a power step fluctuation suppression technology, can avoid damages brought to the system by the step impact, and also can ensure reliable and continuous operation of the system.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to an electrical equipment and a power fluctuation suppression method, device and system thereof. Background technique [0002] Power grid failure, engineering installation and maintenance, multi-component commutation dynamic switching, unit mode conversion, etc. lead to DC bus voltage adjustment, flicker, drop, current overshoot, and power step fluctuations of electrical equipment, which will lead to electrical equipment such as optical storage air conditioners. The system crashes and the power grid is partially paralyzed, affecting the reliability of the unit and user experience. [0003] For example: in the actual air conditioner installation and maintenance site, bus voltage flicker and power step fluctuations during drops will lead to voltage drops of 46V within 100ms, current flicker of 26A, and power step fluctuations of 400W, resulting in unstable control of the unit and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/36H02J3/38
CPCH02J3/24H02J3/36H02J3/385Y02E10/56Y02E60/60
Inventor 贺小林方小斌杨帆刘文斌
Owner GREE ELECTRIC APPLIANCES INC
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