Distribution transformer user phase relation identification device, system and method

A technology of distribution transformers and identification methods, which is applied in the direction of circuit devices, measuring devices, measuring electrical variables, etc., to achieve the effect of convenient acquisition

Active Publication Date: 2019-10-29
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application provides a distribution transformer household phase relationship identification device, system and method to solve the problem of household phase relationship identification

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  • Distribution transformer user phase relation identification device, system and method
  • Distribution transformer user phase relation identification device, system and method
  • Distribution transformer user phase relation identification device, system and method

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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0031] see figure 1 , which is a schematic structural diagram of a distribution transformer household-phase relationship identification device provided in the embodiment of the present application, as shown in figure 1 As shown, the distribution transformer household phase relationship identification device provided in the embodiment of the ...

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Abstract

The application provides a distribution transformer user phase relation identification device, system and method. The device comprises a storage battery, an inverter module, a shorting switch, a powerswitch and a detection module, wherein, the storage battery is electrically connected with the input end of the inverter module, the first output end of the inverter module is electrically connectedwith the second end of the power switch, and the second output end of the inverter module is grounded; the first end of the shorting switch is connected with the first end of the power switch and a distribution transform neutral point, and the second end of the shorting switch is grounded; and the detection module comprises a three-phase voltage detection device, and the detection device is connected with the low-voltage side of the distribution transform. The distribution transformer user phase relation identification system comprises a distribution transformer user phase relation identification device and an electric power automatic meter reading system, and the distribution transformer user phase relation identification device is in communication connection with the electric power automatic meter reading system. The distribution transformer user phase relation identification device, system and method can effectively identify the user phase relation so as to provide basis for regulation of the three-phase load.

Description

technical field [0001] The present application relates to the technical field of three-phase unbalance control, in particular to a device, system and method for identifying phase-to-phase relationships of distribution transformers. Background technique [0002] In the low-voltage distribution network, distribution transformers are often in an asymmetrical operating state due to unbalanced three-phase loads. When the distribution transformer is in an asymmetrical operation state, the loss of the transformer will increase, the zero-sequence current will be too large, the temperature of the local metal parts will increase, and it will even cause the transformer to burn out, which seriously threatens the safe operation of the power system. [0003] The most direct and effective way to improve the three-phase voltage imbalance is to adjust the load distribution of each phase to make the three-phase loads tend to be equal, then the three-phase load imbalance problem of the low-vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G01R31/00
CPCH02J3/00G01R31/00
Inventor 刘红文唐伟超王科柴晨超
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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