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Main transformer gas relay online inspection device and method

A technology of inspection device and inspection method, applied in the direction of measuring device, circuit breaker test, instrument, etc., can solve the problems of long time, scrapping, long storage time, etc.

Inactive Publication Date: 2017-12-15
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the inspection of the main transformer gas relay can only be done by powering off the main transformer and turned to the maintenance state, and then the main transformer needs to be drained to below the installation position of the gas relay, and then the gas relay to be inspected is removed, and a new qualified gas relay is installed. Then take the gas relay to be tested back to the laboratory for testing by testing equipment. If the old gas relay is unqualified, it will be scrapped. If it passes the test, it will be put down and used for installation. It can be installed and used only after passing the inspection. Now the detection of the traditional main transformer gas relay needs a lot of manpower and material resources, and the procedure is cumbersome and takes a long time.

Method used

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  • Main transformer gas relay online inspection device and method
  • Main transformer gas relay online inspection device and method
  • Main transformer gas relay online inspection device and method

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] like figure 1 Shown is the installation diagram of a traditional gas relay, including the main transformer body 1 and the oil conservator 3 installed on the top of the main transformer body 1 , wherein the high-voltage bushing 2 is installed between the main transformer body 1 and the oil conservator 3 . The main transformer body 1 and the oil conservator 3 are connected in turn with the main transformer body connecting pipe 10, the gas relay oil outlet valve 21, the gas relay 9, the gas relay oil inlet valve 20, and the oil conservator downpipe 4. During operation, the transformer oil 19 flows into the transformer by the oil conservator.

[0025] Among them, the gas relay is used for non-electrical protection during the operation of the main transformer. When the main transformer fails, the hot spot at the fault will pyrolyze the surrounding oi...

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Abstract

The invention relates to a main transformer gas relay online inspection device, the device comprises a main transformer body and an oil conservator arranged on the top of the main transformer body, the device also comprises a main transformer body connecting pipe, an oil inlet working solenoid valve, a first t-branch pipe, a second t-branch pipe, an oil outlet working solenoid valve and an oil conservator leading-down pipe which are connected in sequence, and the gas relay is arranged on the connecting portion of the first t-branch pipe and the second t-branch pipe; the device also comprises an oil inlet pipe, an oil storage tank, an oil outlet valve of the oil storage tank, an online inspection device for inspecting whether the gas relay is qualified and an oil outlet pipe which are connected in sequence, the other end of the oil inlet pipe is connected with the third end of the second t-branch pipe through an oil outlet inspection solenoid valve, and the other end of the oil outlet pipe is connected with the third end of the first t-branch pipe through an oil inlet inspection solenoid valve; and the invention also relates to a main transformer gas relay online inspection method. According to the invention, online inspection can be performed on the gas relay at any time in uninterruptible power supply online state.

Description

technical field [0001] The invention relates to an online inspection device and inspection method for a gas relay of a main transformer. Background technique [0002] At present, the inspection of the main transformer gas relay can only be done by powering off the main transformer and turned to the maintenance state, and then the main transformer needs to be drained to below the installation position of the gas relay, and then the gas relay to be inspected is removed, and a new qualified gas relay is installed. Then take the gas relay to be tested back to the laboratory for testing by testing equipment. If the old gas relay is unqualified, it will be scrapped. If it passes the test, it will be put down and used for installation. It can be installed and used only after passing the inspection. Now the detection of the traditional main transformer gas relay needs a lot of manpower and material resources, and the procedure is cumbersome and takes a long time. Contents of the i...

Claims

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Application Information

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IPC IPC(8): G01R31/327
CPCG01R31/3278
Inventor 林晓铭连鸿松何捷陈领赖海莉杨珊
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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