Partial discharge detector

A partial discharge and detector technology, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve the problems of changing test environment, large reading error, low brightness, etc., and achieve large display information, long service life, and accurate readings Effect

Inactive Publication Date: 2018-04-20
武汉今电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, traditional partial discharge detectors mostly use oscilloscope display, which has low brightness and short life, and cannot meet the requirements for equipment usability and life in high-frequency use; the traditional pointer display has large reading errors and poor stability. The requirements for data accuracy and stability cannot be met; the testing environment of electrical equipment is changeable, and the accuracy of the test data cannot be guaranteed if the partial discharge detector cannot be moved flexibly and placed fixedly

Method used

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Embodiment Construction

[0022] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Such as figure 1 The shown partial discharge detector includes three parts: a casing 1 , a front panel 11 and a rear panel 21 . The casing 1 is provided with a coupling capacitor 9, a control unit 10, an input unit 2, a preamplifier 3, a filter amplifier 4, a main amplifier 5, a data acquisition card 6 and a microprocessor 7; There is a display unit 8 and a control panel 19; wherein the input end of the input unit 2 is electrically connected to the coupling capacitor 9, and t...

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Abstract

The invention discloses a partial discharge detector, which includes three parts: a casing, a front panel and a rear panel. The casing is provided with a coupling capacitor, a control unit, an input unit, a preamplifier, a filter amplifier, a main amplifier, a data An acquisition card and a microprocessor, a display unit and a control panel are arranged on the front panel. The input unit receives the signal sent by the coupling capacitor, the signal is amplified by the preamplifier, the interference signal is filtered by the filter amplifier, and the signal is further amplified by the main amplifier, and then collected by the data acquisition card. The microprocessor processes the data collected by the data acquisition card and displays them on the display unit; the control unit controls the magnification of the amplifier and the frequency range of the filter. The invention combines graphics and digital display to intuitively display various laws of discharge information, and simultaneously has the functions of data collection, storage, display and printing.

Description

technical field [0001] The invention belongs to detection equipment for evaluating the quality of electric equipment, in particular to a partial discharge detector for electric equipment insulation detection. Background technique [0002] During the operation of the power system, in order to ensure the reliability, stability and safety of the power supply of the power system, it is necessary to monitor various indicators of the electrical equipment involved in the power system, such as circuit breakers, transformers, capacitors, etc. In order to avoid the impact of frequent power failure detection on users, live detection will gradually replace power failure detection and become one of the main means to obtain equipment status information. [0003] One of the most widely used monitoring methods at present is partial discharge detection. The partial discharge detector is developed according to the most advanced international and domestic technologies. It integrates computer c...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01R31/12G01R1/02
CPCG01R31/12G01R1/025
Inventor黄怀彬
Owner武汉今电科技有限公司