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Intelligent line switching device for electrical test of power transformer

A technology for power transformers and electrical testing, applied in the field of intelligent switching line devices for electrical testing of power transformers, can solve the problems of long testing time, large workload, poor reliability, etc., and achieve the effects of reducing labor intensity, less quantity, and light overall weight

Pending Publication Date: 2019-01-04
STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Field tests have problems such as heavy workload, cumbersome operation, error-prone, poor reliability, and long test time

Method used

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  • Intelligent line switching device for electrical test of power transformer
  • Intelligent line switching device for electrical test of power transformer
  • Intelligent line switching device for electrical test of power transformer

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0022] The invention integrates the detection functions of four traditional instruments of dielectric loss, insulation resistance, DC resistance and on-load tap characteristic. The modular design of the instrument, the master control module controls the work of 4 measurement modules through the control bus, the input and output of the measurement modules are connected to the measurement bus, and the switch line device selects the measurement module to be tested according to the inspection items and detection parts according to the instructions of the master control module. to the test terminals of the test transformer. Under the control of the measurement and control software, the required test items are automatically completed.

[0023] The performance requirements of the present invention are as follows:

[0024] 1. When measuring the dielectric loss capacitance of different windings and the last screen of the transformer, the highest voltage of the test power supply is 10k...

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PUM

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Abstract

The invention discloses an intelligent line switching device for an electrical test of a power transformer, and the device comprises a general control unit, a dielectric loss test unit, an insulationresistance test unit, a DC resistance test unit, an on-load tap changer characteristic test unit and a line switching device. The main control unit is in control connection with the dielectric loss test unit, the insulation resistance test unit, the DC resistance test unit, the on-load tap-changer characteristic test unit and the line switching device through a control bus. The line switching device and a tested transformer are connected through a test line. According to the invention, the functions of testing dielectric loss, insulation resistance, DC resistance and characteristic testing ofan on-load tap-changer are integrated into one instrument. The device completes the testing of all test items of all detection parts of the transformer under the cooperation of the line switching device.

Description

technical field [0001] The invention relates to the technical field of power transformer measurement, in particular to an intelligent switching line device for electric tests of power transformers. Background technique [0002] In order to ensure the normal operation of the power system, all kinds of electrical equipment must be regularly tested. As the core power supply equipment, the power transformer has a direct impact on the safe operation of the power grid. The traditional method of testing power transformers requires the use of multiple special testing instruments. According to different measurement items and testing parts, different instruments are manually selected, and various testing lines and testing parts are replaced for testing. On-site tests have problems such as heavy workload, cumbersome operation, error-prone, poor reliability, and long test time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26G01R27/02G01R31/327G01R1/04
CPCG01R1/0416G01R27/02G01R27/025G01R27/2694G01R31/327
Inventor 黎刚孙利朋李炯朱斌郭剑姚琪周键张磊
Owner STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
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