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Digital radiography-based breaker operating characteristic on-line detection device and method

A technology of action characteristics and detection devices, which is applied in the direction of circuit breaker testing, etc., can solve the problems of lack of data accumulation, short power outage time, difficult installation, etc., and achieve the effect of strong analysis ability, high reliability and improved operation reliability

Active Publication Date: 2010-11-24
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increasing requirements for power supply reliability, there are fewer and fewer opportunities for electrical equipment to be repaired during power outages. Even if a power outage is applied, the time for power outages is generally tight. Using a mechanical characteristic tester to test the mechanical characteristics of a circuit breaker requires a high-altitude connection to open the circuit. The breaker test line needs to be installed with speed sensors. Different types of circuit breakers require sensors with different structures, which is difficult to install. Moreover, due to the incomplete function of the mechanical characteristic tester and the lack of sufficient data accumulation, even with a large amount of data, fault diagnosis is difficult. Analytical skills are also insufficient

Method used

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  • Digital radiography-based breaker operating characteristic on-line detection device and method

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Embodiment 1

[0025] Embodiment one: if figure 1 As shown, the on-line monitoring device for circuit breaker action characteristics based on photography digitization in the present invention includes punctuation, high-speed camera, supplementary light and computer. When the circuit breaker under test is a three-phase operating mechanism, the punctuation is set on the transmission mechanism on the main shaft; the high-speed camera is set at a position suitable for the punctuation on the transmission mechanism of the circuit breaker, and is used to shoot the movement process of the punctuation during the separation and closing of the transmission mechanism of the circuit breaker, and the supplementary light is set at a position that can supplement the light of the high-speed camera Corresponding position; the image output end of the high-speed camera is connected with the signal input end of the computer, and the captured image is processed and analyzed by the computer.

Embodiment 2

[0026] Embodiment two: if figure 2 As shown, when the circuit breaker under test is a single-phase operating mechanism, it is necessary to photograph the three moving contact rods of the three-phase transmission mechanism at the same time. Camera 2, high-speed camera 3, supplementary light 1, supplementary light 2, supplementary light 3, and the computer, marking point 1, marking point 2 and marking point 3 are respectively set on the three moving contact pull rods of the transmission mechanism of the circuit breaker under test ;The three high-speed cameras are respectively set at positions suitable for the punctuation marks on the transmission mechanism of the circuit breaker, and the three high-speed cameras are connected by synchronous lines; The corresponding positions; the image output terminals of the three high-speed cameras are all connected to the signal input terminals of the computer, and the captured images are processed and analyzed by the computer.

[0027] The...

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Abstract

The invention discloses a digital radiography-based breaker operating characteristic on-line detection device and method. The device comprises a gage mark, an image acquisition device and a computer, wherein the gage mark is arranged on a breaker drive mechanism; the image acquisition device is arranged in a place corresponding to the gage mark on the breaker drive mechanism; and the signal input end of the computer is connected with the image output end of the image acquisition device. The device of the invention uses a high speed camera to shoot the motion process of the breaker drive mechanism and obtain a motion image and inputs the motion image in the computer; and the computer analyzes and processes the image to obtain the motion (travel time) curve of the gage mark and performs analysis according to the obtained motion curve to obtain the motion characteristic parameter of the breaker to be detected. The device and method of the invention can be used to realize the on-line detection of the motion characteristic of the breaker, lay a foundation for handling the operational state of the breaker and grasping the motion characteristic, play an important role in the improvement of the operational reliability and provide support for the reliable operation of the electric system.

Description

technical field [0001] The invention relates to the technical field of detection of mechanical characteristics of a high-voltage circuit breaker, in particular to an on-line detection device and method for the action characteristics of a non-contact circuit breaker based on photographic digitization. Background technique [0002] At present, the circuit breaker is the main equipment with the largest number in the power grid, and it plays two roles: one is the control function, that is, according to the operation requirements of the power grid, a part of the electrical equipment or lines are put into or out of the running state, and turned into a standby or maintenance state The second is the protection function, that is, when the electrical equipment or line fails, the faulty part is quickly removed from the power grid through relay protection and automatic device action circuit breaker, so as to protect the normal operation of the non-faulty part of the power grid. When a c...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 黄兴泉李成榕刘佳王伟张欲晓
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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