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Inter-turn short circuit fault locating system and method

A technology of inter-turn short-circuit fault and positioning system, which is applied in the direction of measuring devices, instruments, measuring electronics, etc., can solve the problems of not mentioning the protection measures of the data acquisition unit, and the matching judgment is not given clearly, so as to achieve reliable diagnosis results, Light weight and improved positioning efficiency

Active Publication Date: 2019-01-04
广西电网有限责任公司桂林供电局
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention focuses on how to use the database record information of the characteristic waveform matched with the response difference waveform obtained by detection to determine the inter-turn short-circuit fault location of the rotor. Since the data acquisition terminal needs to be connected to the coil, it does not mention the data The acquisition unit takes corresponding protection measures, and does not give a clear method for how to match the response difference waveform obtained by the test with the characteristic waveform in the database, and the similarity between the corresponding difference waveform and the characteristic waveform in the test is The key to this positioning method

Method used

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  • Inter-turn short circuit fault locating system and method
  • Inter-turn short circuit fault locating system and method

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Embodiment 1

[0049] A turn-to-turn short circuit fault location system, comprising a pulse generation unit, a data acquisition unit, a protection unit, a fault judgment and location unit, a data storage unit, and a display unit; the output end of the pulse generation unit is connected to both ends of the rotor coil The input end of the data acquisition unit is connected to the two ends of the rotor coil through the protection unit; the output end of the data acquisition unit is connected to the input end of the fault judgment and positioning unit; the data storage unit and the display unit respectively connected with the fault judgment and positioning unit.

[0050] The pulse generating unit includes a housing I3, a pulse signal generating circuit and a microtransformer I arranged in the housing I3; the housing I3 is provided with a pulse output port 4 and a switch I6; the pulse output The port 4 and the switch I6 are respectively integrated on the pulse signal generating circuit; the puls...

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Abstract

The invention discloses an inter-turn short circuit fault locating system and method. The system comprises a pulse generating unit, a data acquisition unit, a protection unit, a fault judgment and positioning unit, a data storage unit, and a display unit. The output end of the pulse generating unit is connected with both ends of a rotor coil; the input end of the data acquisition unit is connectedwith both ends of the rotor coil through the protection unit; the output end of the data acquisition unit is connected with the input end of the fault judgment and positioning unit, and the data storage unit and the display unit are connected with the fault judgment and positioning unit. The invention has the advantages of simple structure, reliability, small size and light weight, and protects the data acquisition unit through the protection unit, so as to prevent damage to the system caused by overvoltage or overcurrent; fault judgment and fault location of the tested coil are realized by similarity calculation; the coil fault location efficiency is improved and the diagnosis result is more reliable.

Description

technical field [0001] The invention belongs to the technical field of coil inter-turn short-circuit fault diagnosis, and relates to an inter-turn short-circuit fault location system and method. Background technique [0002] As the core power component of the power system, it is responsible for the main power production tasks, and its operation reliability directly affects the safe operation of the power grid. With the rapid development of the power industry and the continuous increase of the installed capacity of power plants, the reliability of operation is required to be higher and higher. Once a fault occurs, especially a malignant fault, it will affect the normal operation of the entire power system and bring huge losses to the national economy. Investigations and studies have shown that: in large groups that have been in operation, coil turn-to-turn short circuit is one of the typical faults, and it accounts for a large proportion of the total number of faults. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/06G01R1/28G01R1/36
CPCG01R1/28G01R1/36G01R31/72
Inventor 蒋卫彭彦军滕本科葛志强董海亮孙春树张晓辉
Owner 广西电网有限责任公司桂林供电局
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