Power distribution network transformer low-voltage winding deformation on-line monitoring device and method

A technology of low-voltage windings and transformers, applied in electromagnetic measurement devices, electric/magnetic solid deformation measurement, etc., can solve the problems of inability to monitor the deformation of transformer windings in time, avoid attenuation and deformation and electromagnetic compatibility problems, low cost, Reliable effect

Inactive Publication Date: 2014-04-09
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
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Problems solved by technology

[0005] In order to solve the problem that the existing off-line detection technology cannot monitor the deformation of transformer windings in time, the present invention provides an online monitoring device and method for low-voltage winding deformation of distribution network transformers

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  • Power distribution network transformer low-voltage winding deformation on-line monitoring device and method

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Embodiment Construction

[0021] like figure 1 As shown, the on-line monitoring device for low-voltage winding deformation of distribution network transformer includes industrial computer, pulse signal generator, capacitive voltage divider, current transformer, and data acquisition module; among them,

[0022] The pulse signal generator provides two identical pulse signals: one detection pulse signal and one reference pulse signal;

[0023] The capacitive voltage divider is connected to the detection pulse signal output end of the pulse signal generator, and its low-voltage end is connected to the low-voltage bus of the low-voltage winding of the distribution network transformer for injecting the detection pulse signal provided by the pulse signal generator into the distribution network. In the low-voltage winding of the grid transformer;

[0024] The current transformer is installed on the grounding line of the neutral point of the low-voltage winding of the distribution network transformer, and is ...

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Abstract

The present invention relates to monitoring of deformation of a power distribution network transformer low-voltage winding, specifically to a power distribution network transformer low-voltage winding deformation on-line monitoring device and method. The invention solves the problem that conventional off-line detecting technologies cannot monitor the transformer winding deformation state timely. The monitoring device comprises an industrial control computer, a pulse signal generator, a capacitive divider, a current transformer, and a data acquisition module. The monitoring method comprises the steps of a) detection signal injection; b) response signal detection; c) data acquisition; and d) analysis and determination. According to the monitoring device and method, the hardware structure is simple; the method is effective; the work is reliable; and the on-line monitoring of the deformation of the power distribution network transformer low-voltage winding is realized.

Description

technical field [0001] The invention relates to monitoring the deformation of a low-voltage winding of a distribution network transformer, in particular to an on-line monitoring device and method for the deformation of a low-voltage winding of a distribution network transformer. Background technique [0002] Smart grid is the inevitable result of economic and technological development, specifically refers to the use of advanced technology to improve the performance of power systems in terms of energy conversion efficiency, power utilization, power supply quality and reliability. The basis of the smart grid is distributed data transmission, computing and control technology, and efficient transmission technology of data and control commands between multiple power supply units. [0003] With the continuous deepening of the concept of smart grid in my country, users in the 10kV distribution network have higher and higher requirements for power supply reliability and power qualit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16
Inventor 杨海生刘玲史承杰雷丽萍
Owner STATE GRID CORP OF CHINA
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