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Gas relay calibration stand and calibration method thereof

A verification method and relay technology, applied in circuit breaker testing, circuits, electric switches, etc., can solve the problems of over-period operation and undetectable gas relays, and achieve the effects of fast test speed, easy operation, and high degree of automation

Active Publication Date: 2011-08-10
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The gas relay flow rate calibration platform of the present invention can meet the calibration and detection of various types of gas relays by adjusting the valve to finely and steplessly detect and control the flow rate of liquid oil fluid, especially to solve the problems of float type or floating ball type gas relays. The problem that the relay runs over cycle and cannot be detected

Method used

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  • Gas relay calibration stand and calibration method thereof
  • Gas relay calibration stand and calibration method thereof
  • Gas relay calibration stand and calibration method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] As shown in the figure, the gas relay test bench of the present invention includes a mechanical part, a liquid flow part, a flow detection part and a microcomputer control part. The external dimensions of the mechanical part are: 1800×800×1000mm (length×width×height).

[0078] The mechanical part includes a working platform 15, a clamping device 1 for fixing the relay and a valve adjusting device 2 for controlling the liquid flow. The liquid flow part includes: a pipeline 9, an oil storage tank 4 and a pressure-stabilizing oil tank 5 connected to the pipeline 9, an oil pump 6 and a regulating valve 7 connected between the oil storage tank 4 and the pressure-stabilizing oil tank 5, connected to The steady flow conduit 8 and the flow sensor 10 between the valve regulating device 2 and the steady pressure oil tank 5 . The flow detection section includes a flow sensor. The microcomputer control part includes a computer 11, an industrial computer 12 connected to the comput...

Embodiment 2

[0130] Except that the relay that can be verified by the flow rate verification station is Φ50mm, and the flow rate range is 1.0-1.5 m / s, the others are the same as in embodiment 1, and the gas relay flow rate verification station is made to verify the relay.

Embodiment 3

[0132] In addition to the Φ25mm relay that can be calibrated by the flow rate calibration table, the flow rate range is 1.0-1.5 m / s, and the action volume value range of the light gas contact is 150-250cm 3 When the alarm signal is sent, the test range of the flow rate value that is finely and steplessly adjusted by the stepper motor: except for 1-1.5m / s, others are the same as in embodiment 1, and the gas relay flow rate verification platform is made to verify the relay.

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Abstract

The present invention provides a gas-actuated relay checking table and a checking method thereof, wherein the gas-actuated relay checking table comprises the following components: a mechanical part, a fluid flow part, a flow capacity detecting part and a microcomputer control part, wherein the mechanical part comprises a clamping device (1), a pressure adjusting device (2) and a working table (15). The fluid flow part comprises an oil box (4), a pressure stabilizing oil box (5), an oil pump (6), a flow sensor (10), an adjusting valve (7), a strainless steel steady flow pipe (8) and a pipeline(9). The flow capacity detecting part comprises a flow capacity sensor. The microcomputer control part comprises a computer (11), an industrial control machine (12), a control interface plate, and anoil pump activating open-phase and over-current protecting circuit (14). The pulse current and voltage signal output by the checking table are input in the microcomputer for controlling oil flow capacity after amplifying and rectifying. Through the superfine and stepless detecting and control of adjusting valve to the flow velocity of fluid such as liquid and oil, the checking detection satisfying various gas-actuated relay can be obtained. Especially a problem that the floater type or floating ball type gas-actuated relay runs supra-periodically and can not detect is settled.

Description

technical field [0001] The invention relates to a protection device for a transformer, a reactor, an on-load tap changer and a method for using the same. More specifically, the invention relates to a gas relay calibration platform and a calibration method thereof. Background technique [0002] A transformer is an electrical device used to change the magnitude of the AC voltage, and it plays an extremely important role in the power system and power supply system. At present, a large number of oil-immersed transformers are widely used in my country's power system, and the safe operation of transformers has naturally become the key work of the power supply department, and gas protection is one of the effective technical measures to ensure the safe operation of oil-immersed transformers. The main advantages of gas protection are rapid action, high sensitivity, simple installation and wiring, and can reflect various faults that occur inside the fuel tank. [0003] The basic work...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327H01H35/24
Inventor 倪裕康施震宇
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO