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Three-layer relay protection system, device and method for hybrid distribution transformer

A relay protection device and distribution transformer technology, which is applied in the field of transformers, can solve the problems of lack of relay protection for hybrid distribution transformers, and achieve the effect of increasing service life and reliability

Active Publication Date: 2020-12-18
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a three-layer relay protection system, device and method for hybrid distribution transformers, so as to solve the lack of protection for hybrid distribution transformers in the prior art. Technical solutions

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  • Three-layer relay protection system, device and method for hybrid distribution transformer
  • Three-layer relay protection system, device and method for hybrid distribution transformer
  • Three-layer relay protection system, device and method for hybrid distribution transformer

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Embodiment Construction

[0057] The present invention is described in further detail below in conjunction with accompanying drawing:

[0058] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore cannot be construed as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be construed as indicating or implying relative importance; in addition, unless otherwise Clearly stipulated and limited, the terms "installation"...

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Abstract

The invention discloses a three-layer relay protection system, device and method for a hybrid distribution transformer, and the system, device and method are characterized in that a primary side winding of a main transformer of the device is connected with a power grid through a primary side switch group, and a secondary side winding of the main transformer is connected with a load through a secondary side switch group; a tertiary side winding of the main transformer is connected with the current compensator through a tertiary side switch group; a primary side winding of the main transformer is connected with a primary side winding of the isolation transformer in series, and a secondary side winding of the main transformer is connected with the voltage compensator through the quaternary side switch group. The voltage compensator and the current compensator are connected through a direct current bus.

Description

【Technical field】 [0001] The invention belongs to the technical field of transformers, and relates to a three-layer relay protection system, device and method of a hybrid distribution transformer. 【Background technique】 [0002] In the future smart grid, with the increasing use of distributed new energy power generation and power electronic conversion technology, the uncertainty of intermittent new energy power generation, the uncertainty of equipment and network operation status, and the load and demand side response The uncertainty of the distribution network will face huge challenges in terms of voltage stability, power supply reliability, and power quality. The hybrid distribution transformer can replace the traditional distribution transformer to realize reactive power compensation, harmonic control, voltage regulation and other functions, and is suitable for wide application in the future intelligent distribution network. [0003] The main body of the hybrid distribut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/04H02H7/20H02J3/00
CPCH02H7/04H02H7/20H02J3/00
Inventor 张立石吴子豪王辰曦唐露甜梁得亮柳轶彬蔡生亮李大伟周堃高亚晨
Owner XI AN JIAOTONG UNIV
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