On-line pressure monitoring and automatic quantitative oil taking/supplementing device for electric power less oil equipment

A pressure monitoring and oil replenishment device technology, applied in the field of power transmission and distribution, can solve problems such as power supply interruption, difficulty in timely grasping the health status and change trend of oil-less equipment, and load transfer

Active Publication Date: 2018-06-12
成都佳信电气工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method has the following defects: 1. Manual monitoring is required, and it is difficult to grasp the health status and change trend of the oil-reducing equipment in time, so that the fault occurs within the routine monitoring cycle; Automated quantitative replenishment / oil sampling detection for oil-less equipment with insufficient safety distance; 3. Power failure sampling will cause power supply interruption and load transfer

Method used

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  • On-line pressure monitoring and automatic quantitative oil taking/supplementing device for electric power less oil equipment
  • On-line pressure monitoring and automatic quantitative oil taking/supplementing device for electric power less oil equipment
  • On-line pressure monitoring and automatic quantitative oil taking/supplementing device for electric power less oil equipment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 1 As shown, this embodiment includes an oil reservoir 24 and a controller 23. The oil outlet of the oil reservoir 24 is connected to one end of the series pipeline A composed of the oil outlet valve 3 of the oil reservoir and the new oil flow meter 4, and is connected in series. The other end of the pipeline A is respectively connected with the oil-reducing equipment through the pipeline. The pipeline connecting the series pipeline A and the A-phase oil-reducing equipment 26 is provided with an A-phase oil-reducing equipment oil inlet valve 5, and the series pipeline A and the B-phase The pipeline connected to the oil-less equipment 27 is provided with a B-phase oil-less equipment oil inlet valve 10, and the pipeline connected to the C-phase oil-less equipment 28 of the series pipeline A is provided with a C-phase oil-less equipment oil inlet valve 14; A phase oil discharge pipeline is set between the oil-reducing equipment 26 and the oil inlet valve 5 of...

Embodiment 2

[0057] Such as figure 2 As shown, this embodiment adds the following parts on the basis of embodiment 1:

[0058] The other end of the series pipeline A is also connected to the zero-phase oil-less equipment 25 through the pipeline. On the connecting pipeline between the series pipeline A and the zero-phase oil-less equipment 25, a zero-phase oil-less equipment oil inlet valve 21 is arranged. A zero-phase oil discharge pipeline is set between the oil-reducing equipment 25 and the oil inlet valve 21 of the zero-phase oil-reducing equipment. 25 is equipped with a zero-phase pressure transmitter 6;

[0059] There is also an automatic control module for oil extraction / supplementation of zero-phase oil-less equipment in the controller;

[0060] The zero-phase oil-less equipment oil inlet valve 21, the zero-phase oil discharge valve 20, and the zero-phase oil discharge flowmeter 21 are all electrically connected to the PLC.

[0061] The zero-phase oil discharge valve 20 and the ...

Embodiment 3

[0063] Such as image 3 As shown, this embodiment includes an oil reservoir 24 and a controller 23. The oil outlet of the oil reservoir 24 is connected to one end of the series pipeline A composed of the oil outlet valve 3 of the oil reservoir and the new oil flow meter 4, and is connected in series. The other end of the pipeline A is respectively connected with the oil-reducing equipment through the pipeline. The pipeline connecting the series pipeline A and the A-phase oil-reducing equipment 26 is provided with an A-phase oil-reducing equipment oil inlet valve 5, and the series pipeline A and the B-phase The pipeline connected to the oil-less equipment 27 is provided with a B-phase oil-less equipment oil inlet valve 10, and the pipeline connected to the C-phase oil-less equipment 28 of the series pipeline A is provided with a C-phase oil-less equipment oil inlet valve 14; A phase oil discharge pipeline is set between the oil-reducing equipment 26 and the oil inlet valve 5 of...

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Abstract

The invention discloses an on-line pressure monitoring and automatic quantitative oil-taking / supplementing device for power oil shortage equipment, and the device comprises a differential pressure transmitter or a pressure transmitter which is used for detecting the differential pressure between casing pipes or mutual inductors, a controller, a solenoid valve and a flow meter, wherein the solenoid valve and the flow meter are used for controlling and metering the oil taking / supplementing for power oil shortage equipment. The device can detect the pressure in real time, carries out comprehensive analysis of pressure changes, and evaluates the health conditions of the oil shortage equipment. If the equipment has a fault or hidden troubles, the device can timely give an alarm. The device automatically carries out quantitative taking / supplementing of oil, thereby providing an insulating oil sample for the further detection of accident prevention and causing no impact on insulation.

Description

technical field [0001] The invention relates to the field of power transmission and distribution, in particular to an on-line pressure monitoring and automatic quantitative oil taking / replenishing device for electric power and oil-less equipment. Background technique [0002] During the operation of substations with voltage levels of 110KV and above, the performance of oil-less equipment (current transformers, transformers, etc.) needs to be tested regularly, and the insulating oil in the equipment needs to be extracted during testing. Due to the small amount of insulating oil, the amount of oil taken is limited; after reaching a certain oil amount, new oil needs to be added to meet the operation needs of the equipment. The traditional method is: to take samples of the oil-less equipment of the main transformer, which can only be carried out after the power is cut off. For other oil-less equipment, when the safety distance is met, sampling can be carried out while the power...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01L13/00B67D7/30B67D7/36
CPCB67D7/302B67D7/36G01L13/00
Inventor唐剑唐兵王春梅王学武王延春刘东全盛罗邹明娟
Owner成都佳信电气工程技术有限公司