CN108957311A - Online Buchholz relay check system - Google Patents
Online Buchholz relay check system Download PDFInfo
- Publication number
- CN108957311A CN108957311A CN201811056657.4A CN201811056657A CN108957311A CN 108957311 A CN108957311 A CN 108957311A CN 201811056657 A CN201811056657 A CN 201811056657A CN 108957311 A CN108957311 A CN 108957311A
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- valve
- detection oil
- oil pipe
- detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to a kind of online Buchholz relay check systems, the first detection oil circuit including working oil path, for detecting heavy gas flow speed value, one end of first working tubing is connect with transformer, the other end and gas relay connect, and the first working tubing is equipped with the first valve, the second valve；Second working tubing one end is connect with gas relay, the other end and fuel reserve tank connect；First detection oil circuit includes the first detection oil pipe, the second detection oil pipe, and one end of the first detection oil pipe is connected on the first working tubing, and the other end of the first detection oil pipe is connect with fuel tank；The 5th valve, flowmeter are successively arranged on first detection oil pipe；Second detection oil pipe one end is connected on the second working tubing, and the other end of the second detection oil pipe is connected on fuel tank.The check system can detect the gas relay in work by real-time online as needed, and transformer does not need to power off when test.
Description
Technical field
The present invention relates to the calibration technology fields of Buchholz relay, and in particular to a kind of online Buchholz relay verification system
System.
Background technique
Transformer is the electrical equipment for changing alternating voltage size, is occupied in the power system extremely important low
, largely using oil-immersed transformer in electric system.Oil-immersed transformer is widely used, when oil-immersed transformer is sent out
When raw internal fault, one of most important safeguard measure is exactly gas relay protection (also referred to as protection), it can send out in time
It is out of order and alarms and cut off faulty equipment from power grid rapidly, reduce the generation of electric power accident, improve power equipment operation
Security reliability.
When breaking down inside transformer or load ratio bridging switch and so that oil decomposition is generated gas or oil stream is caused to get excited,
The contact of gas relay acts, and issues alarm signal immediately, and connect control loop, cuts off faulty equipment automatically, makes accident
Loss is minimized.The sensitivity of gas relay protection depends on the adjusting of the flow speed value and gas volume of gas relay,
For the safe operation for ensuring power transformer, how gas relay heavy gas flow speed value and light device in Gas are accurately detected and adjusted
Body volumetric values seem most important.Gas relay calibration equipment is detection and adjusting gas relay heavy gas flow speed value and light
The dedicated unit of methane gas volumetric values, the charging floor are typically placed in room, cannot achieve live on-line testing.Such as authorization
A kind of gas-actuated relay calibration stand disclosed in the utility model patent of notification number CN201145734Y.
Summary of the invention
The object of the present invention is to provide a kind of online Buchholz relay check system, with solve it is of the existing technology can not
The technical issues of live on-line testing.
To achieve the above object, the online Buchholz relay check system of the present invention adopts the following technical scheme that online gas
Relay checking system, the first detection oil circuit including working oil path, for detecting heavy gas flow speed value, working oil path includes the
One working tubing, the second working tubing, one end of the first working tubing is connect with transformer, the other end and gas relay connect
Connect, the first working tubing be equipped with the first valve, the second valve, the first valve, the second valve by the first working tubing one end
It is set gradually on the direction of its other end；Second working tubing one end is connect with gas relay, the other end and fuel reserve tank connect
Connect, the second working tubing be equipped with third valve, the 4th valve, third valve, the 4th valve by the second working tubing one end
It is set gradually on the direction of its other end；First detection oil circuit includes the first detection oil pipe, the second detection oil pipe, the first detection
One end of oil pipe is connected on the part between the first valve, the second valve of the first working tubing, the first detection oil pipe
The other end connect with fuel tank, fuel tank is connected with oil pump；The 5th valve, flowmeter are successively arranged on first detection oil pipe；Second
Detection oil pipe one end is connected on the part between third valve, the 4th valve of the second working tubing, the second detection oil
The other end of pipe is connected on the fuel tank, and the second detection oil pipe is equipped with the 6th valve, the 7th valve, the 6th valve, the 7th
Valve is set gradually from one end of the second detection oil pipe to the direction of its other end.
Further preferably, the online Buchholz relay check system further includes for detecting light gas volumetric values
Second detection oil circuit, second detection oil circuit one end are connect with the fuel tank, and the other end is connected to being located on the second working tubing
On part between the gas relay and third valve, pressure sensor, the 8th valve are successively arranged on the second detection oil circuit
Door, metering pump.
Further preferably, the online Buchholz relay check system further includes into drain line, into drain line one end
It is connected on the part between flowmeter and fuel tank of the first detection oil pipe, the other end into drain line is connected to second
On the part between the 6th valve and the 7th valve for detecting oil pipe, the 9th valve is equipped with into drain line.
Further preferably, the first valve, the second valve, third valve, the 4th valve, the 5th valve, the 6th valve,
Seven valves, the 8th valve, the 9th valve are motor-driven valve.
Beneficial effects of the present invention: the online Buchholz relay check system of the present invention, detection oil circuit therein are mounted directly
In transformer use site, the gas relay in work can be detected by real-time online as needed, find the problem, avoid in time
Cause the bigger damage of equipment.When test, transformer does not need to power off, and does not influence normal electricity consumption, improves economic benefit；Operation
Personnel do not need to remove gas relay yet, improve work efficiency, and also avoiding may be to gas when dismantling gas relay
It is damaged caused by relay.
Detailed description of the invention
Fig. 1 is the schematic illustration of online Buchholz relay check system of the invention.
Respectively mark corresponding title: 1, transformer in figure, the 2, first motor-driven valve, the 3, second motor-driven valve, 4, gas relay,
5, third motor-driven valve, the 6, the 6th motor-driven valve, 7, fuel reserve tank, 8, pressure sensor, the 9, the 8th motor-driven valve, 10, flowmeter, 11, oil
Case, 12, metering pump, the 13, the 7th motor-driven valve, 14, oil pump, the 15, the 5th motor-driven valve, the 16, the 4th motor-driven valve, the 17, the 9th motor-driven valve.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
The embodiment 1 of the online Buchholz relay check system of the present invention: as shown in Figure 1, online Buchholz relay verification system
System, first including working oil path, for detecting heavy gas flow speed value detects oil circuit, for detecting light gas volumetric values
Second detection oil circuit.Working oil path includes the first working tubing, the second working tubing, one end of the first working tubing and transformer
1 connection, the other end and gas relay 4 connect, and the first working tubing is equipped with the first motor-driven valve 2, the second motor-driven valve 3, and first
Motor-driven valve 2, the second motor-driven valve 3 are set gradually from one end of the first working tubing on the direction of its other end.Second working oil
Pipe one end is connect with gas relay 4, the other end and fuel reserve tank 7 connect.Second working tubing is equipped with third motor-driven valve 5, the
Four motor-driven valves 16, third motor-driven valve 5, the 4th motor-driven valve 16 from one end of the second working tubing on the direction of its other end successively
Setting.
First detection oil circuit includes the first detection oil pipe, the second detection oil pipe, and one end of the first detection oil pipe is connected to the
On the part between the first motor-driven valve 2, the second motor-driven valve 3 of one working tubing, the other end and oil of the first detection oil pipe
Case connection, fuel tank are connected with oil pump.The 5th motor-driven valve 15, flowmeter 10 are successively arranged on first detection oil pipe.
Second detection oil pipe one end be connected to the second working tubing between third motor-driven valve 5, the 4th motor-driven valve 16
Part on, second detection oil pipe the other end be connected on the fuel tank 11.Second detection oil pipe is equipped with the 6th motor-driven valve
6, the 7th motor-driven valve 13, the 6th motor-driven valve 6, the 7th motor-driven valve 13 from second detection oil pipe one end to the direction of its other end according to
Secondary setting.
Second detection oil circuit one end is connect with the fuel tank 11, and the other end, which is connected on the second working tubing, is located at gas
On part between relay 4 and third motor-driven valve 5, pressure sensor 8, the 8th motor-driven valve are successively arranged on the second detection oil circuit
9, metering pump.
Online Buchholz relay check system further includes being connected to the first detection oil into drain line one end into drain line
On the part between flowmeter 10 and fuel tank 11 of pipe, the position of the second detection oil pipe is connected into the other end of drain line
On part between the 6th motor-driven valve 6 and the 7th motor-driven valve 13.
Check system of the invention is installed to beside transformer field in use, will test oil circuit, before being connected to fuel reserve tank
On the pipeline in face.The check system can detecte heavy gas flow speed value, light gas volumetric values and detection sealing performance.Tool
Body running process is as follows:
When detecting heavy gas flow speed value, the 6th motor-driven valve 6, the 4th motor-driven valve 16 and the are opened by computer control system
Nine motor-driven valves 17, oil dropping apparatus refuel to suitable oil level, close the 4th motor-driven valve 16.Then it is electronic that the second motor-driven valve 3, third are opened
Valve 5, the 6th motor-driven valve 6, the 7th motor-driven valve 13, the 5th motor-driven valve 15 and flowmeter 10, close other valves, and pass through frequency converter
The oil stream of control oil pump 14 exports, and is gradually increased the oil stream speed for flowing through under test gas relay 4 by 0, and acquisition stream in real time
Fast signal, when oil stream speed makes under test gas relay grave gas contact closure, computer control system receives grave gas
Action signal, control oil pump 14 stop, and contact closure moment, collected flow speed value was heavy gas flow speed value.
When detecting light gas volumetric values, makes to detect inside oil circuit and gas relay 4 full of oil, pass through computer control
System processed closes other valves, opens the 8th motor-driven valve 9, starts metering pump 12, and real-time detection simultaneously shows what metering pump 12 was discharged
Liquid volume, when 4 inner cavity pasta of gas relay, which drops to, makes light gas contact closure, computer control system is received gently
Gas action signal, control metering pump 12 stop, and contact closure moment collected liquid bulk product value is that light gas holds
Product value.
When detecting sealing performance, makes to detect inside oil circuit and gas relay 4 full of oil, be opened by computer control system
The 8th motor-driven valve 9 and metering pump 12 are opened, remaining valve is closed, is pressurized to liquid, and passes through 8 real-time detection pipeline of pressure sensor
Pressure and real-time display.When loine pressure reaches preset pressure, the 8th motor-driven valve 9 and metering pump 12, system are closed
Into state of pressure keeping, to be completed in predetermined time pressure maintaining, computer control system automatically records initial pressure value and terminates pressure value,
Whether the sealing performance to judge under test gas relay is qualified.
After being completed, the 6th motor-driven valve 6, the 4th motor-driven valve 16, the 9th motor-driven valve 17 and oil pump 14 are opened, other are closed
Oil in fuel tank is returned fuel reserve tank 7 by valve, is then shut off oil pump 14, the 6th motor-driven valve 6 and the 9th motor-driven valve 17.Transformer
When normal work, the first motor-driven valve 2, the second motor-driven valve 3, third motor-driven valve 5 and the 4th motor-driven valve 16 are opened, remaining valve closes
It closes.
The online Buchholz relay check system of the present invention has feature:
(1) the detection oil circuit of verification is directly installed on transformer use site, being capable of real-time online detection as needed
Gas relay in work finds the problem in time and issues alarm signal, while transferring data on the computer of control room,
Avoid the bigger damage of equipment.(2) when testing, transformer does not need to power off, and does not influence normal electricity consumption, improves economic effect
Benefit；Operator does not need to remove gas relay yet, improves work efficiency, and also avoids possible when disassembly gas relay
It is damaged caused by gas relay.(3) use the oil in transformer oil storage case as test medium, without providing and replacing reality for oneself
It tests and uses oil, economize on resources.
The embodiment 2 of the online Buchholz relay check system of the present invention:
The present embodiment 2 and the difference of above-mentioned preferred embodiment 1 are, in the present embodiment 2, can use and provide experiment for oneself
Oil, at this point, can save in embodiment 1 into drain line, eliminates the 9th motor-driven valve, the 6th motor-driven valve and the 7th motor-driven valve are adopted
With one of them.
Each motor-driven valve in above-described embodiment, can also be solenoid valve.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (4)
1. online Buchholz relay check system, it is characterised in that: including working oil path, for detecting heavy gas flow speed value
One detection oil circuit, working oil path include the first working tubing, the second working tubing, and one end of the first working tubing and transformer connect
It connects, the connection of the other end and gas relay, the first working tubing is equipped with the first valve, the second valve, the first valve, the second valve
Door is set gradually from one end of the first working tubing on the direction of its other end；Second working tubing one end and gas relay
Connection, the other end and fuel reserve tank connect, and the second working tubing is equipped with third valve, the 4th valve, third valve, the 4th valve
It is set gradually from one end of the second working tubing on the direction of its other end；First detection oil circuit include first detection oil pipe,
Second detection oil pipe, first detection oil pipe one end be connected to the first working tubing between the first valve, the second valve
Part on, first detection oil pipe the other end connect with fuel tank, fuel tank is connected with oil pump；It is successively arranged on first detection oil pipe
5th valve, flowmeter；Second detection oil pipe one end be connected to the second working tubing between third valve, the 4th valve
Part on, second detection oil pipe the other end be connected on the fuel tank, second detection oil pipe be equipped with the 6th valve, the 7th
Valve, the 6th valve, the 7th valve are set gradually from one end of the second detection oil pipe to the direction of its other end.
2. online Buchholz relay check system according to claim 1, it is characterised in that: the online Buchholz relay
Check system further includes the second detection oil circuit for detecting light gas volumetric values, second detection oil circuit one end and the oil
Case connection, the other end are connected on the part between the gas relay and third valve on the second working tubing,
Pressure sensor, the 8th valve, metering pump are successively arranged on second detection oil circuit.
3. online Buchholz relay check system according to claim 1 or 2, it is characterised in that: the online gas after
Electric appliance check system further include into drain line, into drain line one end be connected to the first detection oil pipe be located at flowmeter and oil
On part between case, into drain line the other end be connected to the second detection oil pipe be located at the 6th valve and the 7th valve it
Between part on, into drain line be equipped with the 9th valve.
4. online Buchholz relay check system according to claim 3, it is characterised in that: the first valve, the second valve,
Third valve, the 4th valve, the 5th valve, the 6th valve, the 7th valve, the 8th valve, the 9th valve be motor-driven valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056657.4A CN108957311A (en) | 2018-09-11 | 2018-09-11 | Online Buchholz relay check system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811056657.4A CN108957311A (en) | 2018-09-11 | 2018-09-11 | Online Buchholz relay check system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108957311A true CN108957311A (en) | 2018-12-07 |
Family
ID=64475255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811056657.4A Pending CN108957311A (en) | 2018-09-11 | 2018-09-11 | Online Buchholz relay check system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108957311A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799452A (en) * | 2019-01-09 | 2019-05-24 | 湖南鼎创装备有限公司 | A kind of conspicuous electric relay detection device of cloth and method |
| CN110514948A (en) * | 2019-08-02 | 2019-11-29 | 山东电力设备有限公司 | A kind of load switch of transformer on-Line Monitor Device |
| CN112504659A (en) * | 2020-10-28 | 2021-03-16 | 国网山东省电力公司青岛供电公司 | Transformer nitrogen-charging fire-extinguishing cut-off valve action threshold value checking system and method |
| CN112630637A (en) * | 2020-11-20 | 2021-04-09 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power transformer |
| CN113109517A (en) * | 2021-04-21 | 2021-07-13 | 国网陕西省电力公司电力科学研究院 | Network access detection device and method of gas relay gas monitoring device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799452A (en) * | 2019-01-09 | 2019-05-24 | 湖南鼎创装备有限公司 | A kind of conspicuous electric relay detection device of cloth and method |
| CN110514948A (en) * | 2019-08-02 | 2019-11-29 | 山东电力设备有限公司 | A kind of load switch of transformer on-Line Monitor Device |
| CN112504659A (en) * | 2020-10-28 | 2021-03-16 | 国网山东省电力公司青岛供电公司 | Transformer nitrogen-charging fire-extinguishing cut-off valve action threshold value checking system and method |
| CN112630637A (en) * | 2020-11-20 | 2021-04-09 | 国网山东省电力公司青岛供电公司 | Online checking system and method for gas relay of power transformer |
| CN113109517A (en) * | 2021-04-21 | 2021-07-13 | 国网陕西省电力公司电力科学研究院 | Network access detection device and method of gas relay gas monitoring device |
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