CN107256787B - A kind of the dual transformer Buchholz relay device and application method of experiment free of demolition - Google Patents
A kind of the dual transformer Buchholz relay device and application method of experiment free of demolition Download PDFInfo
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- CN107256787B CN107256787B CN201710609876.XA CN201710609876A CN107256787B CN 107256787 B CN107256787 B CN 107256787B CN 201710609876 A CN201710609876 A CN 201710609876A CN 107256787 B CN107256787 B CN 107256787B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000002474 experimental method Methods 0.000 title claims abstract description 25
- 230000009977 dual effect Effects 0.000 title claims abstract description 19
- 238000007689 inspection Methods 0.000 claims abstract description 125
- 238000012360 testing method Methods 0.000 claims description 41
- 238000001514 detection method Methods 0.000 claims description 20
- 238000012797 qualification Methods 0.000 claims description 12
- 230000005856 abnormality Effects 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 7
- 230000008439 repair process Effects 0.000 claims description 6
- 238000012795 verification Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 134
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- 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
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
Abstract
The present invention relates to a kind of dual transformer Buchholz relay device of experiment free of demolition and application methods, the device includes two Buchholz relays, examine oil inlet pipe, examine flowline and inspection module, one end of each Buchholz relay is equipped with one and works respectively to be examined into solenoid and one into solenoid, the other end of each Buchholz relay is equipped with the solenoid and one that works out and verifies solenoid respectively, examine the oil outlet of one end connection inspection module of oil inlet pipe, it examines the other end correspondence of oil inlet pipe to examine into solenoid with one to be connected to, examine the oil inlet of one end connection inspection module of flowline, it examines the other end of flowline to correspond to and verifies that solenoid is connected to one.Compared with prior art, the present invention, to improving transformer job security and reducing human and material resources, improves working efficiency and is of great significance in inspection and replacement without having a power failure, without dismantling, without draining the oil.
Description
Technical field
The present invention relates to a kind of transformer Buchholz relay devices, more particularly, to a kind of dual transformer of experiment free of demolition
Buchholz relay device and application method.
Background technology
Traditional main transformer Buchholz relay mounting structure is as depicted in figs. 1 and 2, and transformer includes ontology 1, conservator 8, conservator company
Take over 7, main transformer body connecting tube 3 etc., conservator 8 are mounted on the top of transformer, and one end of old Buchholz relay 5 passes through main transformer sheet
Body connecting tube 3 connects the ontology 1 of transformer, and the other end of old Buchholz relay 5 connects conservator 8, main transformer by conservator connecting tube 7
Ontology connecting tube 3 is equipped with old Buchholz relay inlet valve 4, and conservator connecting tube 7 is equipped with old Buchholz relay delivery valve 6, becomes
It is each filled with insulating oil 2 in depressor ontology 1, conservator 8, old Buchholz relay 5, conservator connecting tube 7 and main transformer body connecting tube 3, it is existing
Transformer Buchholz relay after a period of use, when testing, need to have a power failure transformer, also need transformer interior insulation
Oil is drained the oil to Buchholz relay installation site hereinafter, Buchholz relay to be measured is then unloaded, by the Buchholz relay of new qualification
It installs, the old Buchholz relay under dismantling need to bring back laboratory and be detected, and such as disqualified upon inspection, then scrap, and such as detection is closed
Lattice, then arrange to use when once mounting, existing traditional transformer Buchholz relay detection need to waste a large amount of manpower and materials, and program is numerous
It is trivial, the time is long.
What is more important, new Buchholz relay is after transformer puts into operation again, because in disassembly process, transformer is drained the oil
Bubble is will produce, weight watt protection cannot be thrown immediately and light watt of signal can only be thrown, be after transformer station high-voltage side bus 2-3 hours, observation watt
In this relay really without aggregation gas when, could throw weight watt protection pressing plate, transformer is protected without weight watt and is run within the scope of this time,
There are insecurity, failure when just in case occurring to jump weight watt protection will lead to fault spread, or even transformer is caused to burn
The pernicious consequence ruin, exploded.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of experiments free of demolition
Dual transformer Buchholz relay device and application method, in inspection and replacement without having a power failure, without dismantling, without draining the oil,
Without putting inside transformer oil when replacement, and weight watt protection operation can be put into always, to improving transformer job security and subtracting
Few human and material resources improve working efficiency and are of great significance.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of dual transformer Buchholz relay device of experiment free of demolition, including two Buchholz relays, examine oil inlet pipe,
Examine flowline and inspection module, one end of each Buchholz relay be equipped with respectively one work into solenoid and one examine into
Solenoid, the other end of each Buchholz relay are equipped with the solenoid and one that works out and verify solenoid respectively,
Two solenoids that work out are respectively connected to the conservator of transformer, and two work and are respectively connected to transformer into solenoid
Ontology examines one end of oil inlet pipe to connect the oil outlet of inspection module, examines the other end of oil inlet pipe to correspond to and examines oil inlet with one
Solenoid valve be connected to, it is described examine flowline one end connection inspection module oil inlet, examine flowline the other end correspond to
One verifies that solenoid is connected to；
In use, a Buchholz relay is in working condition, another Buchholz relay is stand-by state, watt under working condition
Corresponding work of this relay opens into solenoid, the solenoid that works out and examines into solenoid, verifies electromagnetic oil
Valve is closed, and the Buchholz relay under stand-by state is corresponding to work into solenoid, the solenoid that works out, examines into electromagnetic oil
Valve and verify that solenoid is turned off；
When testing to any Buchholz relay, Buchholz relay to be detected is directly entered test status, if to be checked
The Buchholz relay of survey is in working condition before entering test status, then in handoff procedure another Buchholz relay by stand-by state into
Enter working condition, corresponding work of the Buchholz relay under test status is closed and examined into solenoid, the solenoid that works out
It tests into solenoid, verify that solenoid is opened with after examining oil inlet pipe, flowline being examined to be connected to respectively, inspection module fortune
Row, if inspection result is qualification, qualified Buchholz relay returns to stand-by state, will not if inspection result is unqualified
Insulating oil in qualified Buchholz relay is put to inspection module, replaces Buchholz relay, and inspection module is to the gas after replacement
Relay refills insulating oil, and the Buchholz relay after replacement enters stand-by state, before Buchholz relay enters working condition
Always insulating oil is full of in cavity.
The inspection module includes examining cycle oil storage tank and Buchholz relay verification unit, and the Buchholz relay is examined
Unit includes circulating pump, flow speed controller and detection controller, and the oil inlet connection of cycle oil storage tank is examined to examine flowline, inspection
The oil outlet for testing cycle oil storage tank connects the oil inlet of circulating pump, the oil outlet of the circulating pump by recycling reservoir delivery valve
Connection examines oil inlet pipe, the flow speed controller to connect circulating pump, and the detection controller is separately connected Buchholz relay and stream
Fast controller.
The inspection cycle oil storage tank is equipped with electro connecting pressure gauge and safety valve, increases when examining pressure in cycle oil storage tank
Greatly to electro connecting pressure gauge set pressure value when, safety valve action, pressure release to setting pressure value below after, safety valve close
It closes.
The inspection module is set in removable vehicle body.
The oil outlet of the detection controller control loop pump conveys insulating oil into Buchholz relay to be detected, passes through
Flow speed controller adjusts the flow velocity and pressure of insulating oil, carrys out the different abnormalities of analogue transformer, if in the transformation of each simulation
Under the abnormality of device, Buchholz relay to be detected can correspond to and send out correct signal value, then the inspection of the Buchholz relay
It is qualification to test result, conversely, then unqualified.
A kind of application method of such as dual transformer Buchholz relay device of above-mentioned experiment free of demolition, including following step
Suddenly：
1）Inspection module is configured in advance, set content includes：Examine Buchholz relay experimental procedure, require and
To the operation order of each solenoid valve under criterion and each state；
2）It controls a Buchholz relay to be in working condition, another Buchholz relay is stand-by state；
4）When testing to any Buchholz relay, Buchholz relay to be detected is directly entered test status, if waiting for
The Buchholz relay of detection is in working condition before entering test status, then in handoff procedure another Buchholz relay by stand-by state
Into working condition；
5）Under test status, circulation of oil flow flow direction when inspection module is run is：It is passed through successively from the oil outlet of inspection module
Examine oil inlet pipe, Buchholz relay to be detected, the oil inlet for examining flowline to be recycled to inspection module；
6）Flow velocity and pressure is carried out to circulation of oil flow by adjusting inspection module to control, to Buchholz relay to be detected into
Performing check, if inspection result is qualification, qualified Buchholz relay returns to stand-by state, and inspection man makees to terminate, inspection module
Recycling examines oil inlet pipe and examines the insulating oil in flowline, removes and examines oil inlet pipe and examine flowline, if inspection result is
It is unqualified, then follow the steps 7）；
7）By underproof Buchholz relay, examines oil inlet pipe and the insulating oil in flowline is examined to put to inspection module,
Replace qualified Buchholz relay, inspection module refills insulating oil to qualified Buchholz relay after replacement, is closed after replacement
The Buchholz relay of lattice enters stand-by state, and inspection man makees to terminate, and inspection module recycling is examined oil inlet pipe and examined in flowline
Insulating oil, remove examine oil inlet pipe and examine flowline；
8）Two Buchholz relays alternately working condition, Buchholz relay enters in working condition front cavity to be filled always
Full insulating oil.
It further include step：According to the data of inspection module diagnosis to step 7）Underproof Buchholz relay under middle replacement
It is accordingly repaired, is tested again after reparation, if qualified, as using next time, if can not repair, done and scrap place
Reason.
Compared with prior art, the present invention has the following advantages：
1, the present invention switches over operation by corresponding two double Buchholz relays, can easily realize two gas relays
Device works, examines each other, replacing and the purpose of stand-by state, and inspection module automatically switches solenoid valve and examines Buchholz relay,
The manual operation that thoroughly solves above-mentioned traditional transformer Buchholz relay is cumbersome, needs the shortcomings of power failure operation.With traditional transformation
Device Buchholz relay is compared, the present invention in inspection and replacement without have a power failure, without dismantling, without put inside transformer oil, more
For importantly, because this patent uses handover module, there is no traditional Buchholz relays after inspection or replacement, need to be in transformer
The insecurity for restarting to exit the weight watt protection of transformer Buchholz relay in the 2-3 to put into operation times hour, and now extensively
Being compared using traditional Buchholz relay has huge advantage.
2, the oil outlet of detection controller control loop pump conveys insulating oil into Buchholz relay to be detected, passes through stream
The flow velocity and pressure of fast controller adjustment insulating oil carry out the true abnormality of difference of analogue transformer, it can be achieved that different become
The demand that Buchholz relay is examined under the abnormality of depressor improves testing accuracy, greatly improves the safety of transformer work.
When 3, examining, inspection module refills insulating oil to the Buchholz relay after replacement, the gas relay after replacement
Device enters stand-by state, and Buchholz relay enters is full of insulating oil always in working condition front cavity, by this step, gas after
Electric appliance can be directly entered pipeline between transformer and conservator and work at any time, including throw weight watt protection and throw light watt of protection,
The problems such as without will produce bubble.
Description of the drawings
Fig. 1 is traditional main transformer Buchholz relay scheme of installation；
Fig. 2 is that traditional main transformer Buchholz relay installs schematic top plan view；
Fig. 3 is the dual transformer Buchholz relay device scheme of installation of experiment free of demolition；
Fig. 4 is that the dual transformer Buchholz relay device of experiment free of demolition installs schematic top plan view；
Fig. 5 is schematic diagram of first Buchholz relay as work Buchholz relay flow；
Fig. 6 is schematic diagram of second Buchholz relay as work Buchholz relay flow；
Fig. 7 is that the first Buchholz relay device is tested the schematic diagram of flow；
Fig. 8 is that the first Buchholz relay device is tested the schematic top plan view of flow；
Fig. 9 is that the second Buchholz relay device is tested the schematic top plan view of flow；
Figure 10 be experiment free of demolition double main transformer Buchholz relay devices in detection controller control operation principle box
Figure.
In figure, 1- ontologies；2- insulating oils；3- main transformer body connecting tubes；The old Buchholz relay inlet valves of 4-；The old gas of 5- after
Electric appliance；The old Buchholz relay delivery valves of 6-；7- conservator connecting tubes；8- conservators；9- first works into solenoid；First watt of 10-
This relay；11- first works out solenoid；12- first is examined into solenoid；13- first verifies solenoid；
14- examines oil inlet pipe；15- examines flowline；16- work oil inlet threeways；17- work flow tees；18- the second gas relays
Device；19- second works into solenoid；20- second works out solenoid；21- second is examined into solenoid；22- second
Verify solenoid；23- examines cycle oil storage tank；24- inspection modules；25- safety valves；26- contact pressure tables；27- is vented
Valve；28- reservoir delivery valves；29- first examines oil inlet threeway；30- first examines flow tee；31- second examines oil inlet three
It is logical；32- second examines flow tee.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
As shown in Figure 3 and Figure 4, the dual transformer Buchholz relay device of a kind of experiment free of demolition, including two gas after
Electric appliance, handover module and inspection module 24, two Buchholz relays are respectively the first Buchholz relay 10 and the second gas relay
Device 18, two Buchholz relays can switch mutually as work Buchholz relay and spare Buchholz relay, handover module and inspection
Can respectively two Buchholz relays be carried out in X -ray inspection X and online gas relay of the replacement through disqualified upon inspection by testing module 24
Device.
Handover module includes：First work into solenoid 9, first work out solenoid 11, first examine oil inlet electricity
Magnet valve 12, first verify solenoid 13, second work into solenoid 19, second work out solenoid 20, second examine
It tests into solenoid 21 and second and verifies solenoid 22 and connecting tube component, the main transformer body on the ontology 1 of transformer
Connecting tube 3 is separately connected first and is worked and worked into one end of solenoid 9 and second into electromagnetic oil by the oil inlet threeway 16 that works
One end of valve 19, first other end to work into solenoid 9 are separately connected the first inspection by the first inspection oil inlet threeway 29
Into one end of one end of solenoid 12 and the first Buchholz relay 10, the other end of the first Buchholz relay 10 passes through the first inspection
It tests flow tee 30 and is separately connected one end that first verifies solenoid 13 and one end that first works out solenoid 11,
Two other ends to work into solenoid 19 are separately connected second by the second inspection oil inlet threeway 31 and examine into solenoid 21
One end and the second Buchholz relay 18 one end, the other end of the second Buchholz relay 18 passes through second and examines flow tee 32
It is separately connected one end that second verifies solenoid 22 and one end that second works out solenoid 20, the first fuel-displaced electricity of work
The other end of magnet valve 11 and second work out solenoid 20 the other end by work flow tee 17 connect conservator 8 on
Conservator connecting tube 7；
Meanwhile the oil outlet of inspection module 24 is by examining the connection of oil inlet pipe 14 first to examine into the another of solenoid 12
It holds or second examines the other end into solenoid 21, the oil inlet of inspection module 24, which passes through, examines first inspection of the connection of flowline 15
Test out the other end of solenoid 13 or the other end that second verifies solenoid 22.
Two Buchholz relays are arranged in parallel on the pipeline between the ontology 1 and conservator 8 of transformer by handover module, together
When also two Buchholz relays are connect with inspection module 24 respectively.Handover module is cut-off by each solenoid valve, control insulation
Oily 2 stream controls single double Buchholz relays as work Buchholz relay, inspection gas respectively in the trend of each threeway to reach
Relay or spare Buchholz relay, and the control handover operation purpose when examining, replacing Buchholz relay.
Inspection module 24 is not for having a power failure to two Buchholz relays, not exiting work Buchholz relay guard mode
Under in X -ray inspection X, as spare if to examining qualified Buchholz relay, such as verify unqualified Buchholz relay, can be straight
It is connected on line to be replaced, using the qualified Buchholz relay replaced with as spare, either still replaced watt in test status
This relay status, only need to be by operating handover module, it is not necessary that transformer has a power failure, without putting 1 oil of transformer body, nothing
The work Buchholz relay protective device that normal operation need to be exited, does not influence the normal operation of power transformer.
Inspection module 24 is integral mounted on removable vehicle body shape, and inspection module 24 includes examining cycle 23 He of oil storage tank
Buchholz relay verification unit is examined in cycle oil storage tank 23 and lays in the insulating oil 2 for having a certain amount of qualification, and cycle oil storage tank is examined
23 can accommodate the trapped fuel by being released in Buchholz relay and its pipeline, also can trapped fuel in storage tank be squeezed into Buchholz relay and its pipe
In road, cycle oil storage tank 23 is examined to be equipped with electro connecting pressure gauge 26, safety valve 25 and blow valve 27 etc., and be equipped with voltage limiting value,
In carrying out Buchholz relay checkout procedure, such as contingency is suppressed excessively high, when pressure is more than setting value, electro connecting pressure gauge 26
Action, 25 pressure release of safety valve ensure that system is safe, and when below pressure release to setting value, safety valve 25 is automatically closed；
Buchholz relay verification unit includes circulating pump, flow speed controller and detection controller, examines cycle oil storage tank 23
Oil inlet connection examine flowline 15, examine cycle oil storage tank 23 oil outlet by recycle reservoir delivery valve 28 connection follows
The oil outlet connection of the oil inlet of ring pump, circulating pump examines oil inlet pipe 14, flow speed controller to connect circulating pump, detect controller
Input terminal is separately connected light watt of alarm signal on Buchholz relay, weight watt action contact signal feedback end and electro connecting pressure gauge 26
Output end, the output end for detecting controller are separately connected the control terminal of each solenoid valve, the control terminal of flow speed controller and safety valve
25 control terminals, detection controller can be PLC controller, can also be other micro-chip processors.
It includes detection control program unit to detect controller, and control test Buchholz relay is programmed with for pre-setting
The programs such as experimental procedure, requirement and criterion can carry out operation and control, to being examined to inspection module 24 and each solenoid valve
Whether surveying Buchholz relay inspection data, to carry out analyzing and diagnosing automatically qualified, in the event of failure, can failure judgement what position,
Fault degree etc..
The oil outlet of detection controller control loop pump conveys insulating oil 2 into Buchholz relay to be detected, passes through stream
The flow velocity and pressure of fast controller adjustment insulating oil 2, carry out the different abnormalities of analogue transformer, if in the transformer of each simulation
Abnormality under, Buchholz relay to be detected can correspond to and send out correct signal value, then the inspection of the Buchholz relay
As a result it is qualification, conversely, then unqualified.
In use, a Buchholz relay is in working condition, another Buchholz relay is stand-by state, watt under working condition
Corresponding work of this relay opens into solenoid, the solenoid that works out and examines into solenoid, verifies electromagnetic oil
Valve is closed, and the Buchholz relay under stand-by state is corresponding to work into solenoid, the solenoid that works out, examines into electromagnetic oil
Valve and verify that solenoid is turned off.As shown in figure 5, when the first Buchholz relay 10 is work Buchholz relay, the first work
Make to open into the solenoid 11 that works out of solenoid 9 and first, first examines into solenoid 12, first and verify electromagnetic oil
Valve 13, second work into solenoid 19, second work out solenoid 20, second examine into solenoid 21, second examine
Go out solenoid 22 to be turned off.As shown in fig. 6, when the second Buchholz relay 18 is work Buchholz relay, the second work oil inlet
Solenoid valve 19 and second work out solenoid 20 unlatching, second examine into solenoid 21, second verify solenoid 22,
First work into solenoid 9, first work out solenoid 11, first examine into solenoid 12, first and examine fuel-displaced electricity
Magnet valve 13 is turned off.Arrow in Fig. 5-Fig. 9 indicates the flow direction of insulating oil.
When testing to any Buchholz relay, Buchholz relay to be detected is directly entered test status, if to be checked
The Buchholz relay of survey is in working condition before entering test status, then in handoff procedure another Buchholz relay by stand-by state into
Enter working condition, corresponding work of the Buchholz relay under test status is closed and examined into solenoid, the solenoid that works out
It tests into solenoid, verify that solenoid is opened with after examining oil inlet pipe 14, flowline 15 being examined to be connected to respectively, inspection module
24 operations, if inspection result is qualification, qualified Buchholz relay returns to stand-by state, if inspection result is unqualified,
Insulating oil 2 in underproof Buchholz relay is put to inspection module 24, replaces Buchholz relay, inspection module 24 is to replacement
Buchholz relay afterwards refills insulating oil 2, and the Buchholz relay after replacement enters stand-by state, and Buchholz relay enters work
Make to be full of insulating oil 2 in state front cavity always.
A kind of application method of such as dual transformer Buchholz relay device of above-mentioned experiment free of demolition, including following step
Suddenly：
1）The detection controller of inspection module 24 is configured in advance, set content includes：Examine Buchholz relay
To the operation order of each solenoid valve under experimental procedure, requirement and criterion and each state；
2）It controls a Buchholz relay to be in working condition, another Buchholz relay is stand-by state；
4）When testing to any Buchholz relay, Buchholz relay to be detected is directly entered test status, if waiting for
The Buchholz relay of detection is in working condition before entering test status, then in handoff procedure another Buchholz relay by stand-by state
Into working condition；
5）Under test status, circulation of oil flow flow direction when inspection module 24 is run is：From the oil outlet of inspection module 24 according to
The secondary oil inlet that inspection module 24 is recycled to through inspection oil inlet pipe 14, Buchholz relay to be detected, inspection flowline 15；
6）Flow velocity and pressure control are carried out to circulation of oil flow by adjusting inspection module 24, to Buchholz relay to be detected
It tests, if inspection result is qualification, qualified Buchholz relay returns to stand-by state, and inspection man makees to terminate, and examines mould
The recycling of block 24 examines oil inlet pipe 14 and examines the insulating oil 2 in flowline 15, and dismounting examines oil inlet pipe 14 and examines flowline 15,
If inspection result is unqualified, 7 are thened follow the steps）；
7）By underproof Buchholz relay, examines oil inlet pipe 14 and the insulating oil 2 in flowline 15 is examined to put to inspection
Module 24, replaces qualified Buchholz relay, and inspection module 24 refills insulating oil to qualified Buchholz relay after replacement
2, qualified Buchholz relay enters stand-by state after replacement, and inspection man makees to terminate, and oil inlet pipe 14 is examined in the recycling of inspection module 24
With the insulating oil 2 in inspection flowline 15, removes and examine oil inlet pipe 14 and inspection flowline 15；
The data diagnosed according to inspection module 24 accordingly repair the underproof Buchholz relay under replacing, and repair
It tests again afterwards, if qualified, as using next time, if can not repair, do and scrap processing；
8）Two Buchholz relays alternately working condition, Buchholz relay enters in working condition front cavity to be filled always
Full insulating oil 2.
As is seen in figs 7-10, a kind of realization method of specific work process is illustrated below：
1）Detection controller is configured in advance, i.e., programming Control is examined the experimental procedure of Buchholz relay, is required, with
And the programs such as criterion, operating control procedure establishment is carried out to the solenoid valve of each switching.
2）When the first 10 normal operation of Buchholz relay, first works works out electromagnetic oil into solenoid 9 and first
Valve 11 maintains a normally open state, and first examines into solenoid 12 and first and verify that solenoid 13 is closed.At this time in conservator 8
Insulating oil 2 by conservator connecting tube 7, work flow tee 17, first work out solenoid 11, the first Buchholz relay 10,
First works into solenoid 9, work oil inlet threeway 16, main transformer body connecting tube 3 etc., the insulating oil 2 with the ontology 1 of transformer
It communicates.
3）The second Buchholz relay 18 is in stand-by state at this time, second works work into solenoid 19, second it is fuel-displaced
Solenoid valve 20, second, which are examined into solenoid 21, second, verifies that solenoid 22 is in off state.
4）When needing to test to 10 relay of the first Buchholz relay, the work of the second Buchholz relay 18 is first opened
Make to work out solenoid 20 into solenoid and second.
5）By light watt of signal of the second Buchholz relay 18 and weight watt trip protection pressing plate input, the second Buchholz relay 18
It puts into operation.
6）The light watt of signal and weight watt trip protection pressing plate, the first Buchholz relay 10 for exiting the first Buchholz relay 10 move back
Go out operation.
7）It closes first and works and work out solenoid 11 into solenoid 9 and first.
8）Inspection module 24 is pushed by transformer, oil inlet pipe 14 will be examined to be connected to first and examined into 12 He of solenoid
Between the outlet of circulating pump.
9）By examine flowline 15 be connected to first verify solenoid 13 and examine cycle oil storage tank 23 import it
Between.
10）Opening first, which is examined into solenoid 12, first, verifies solenoid 13 and oil storage tank delivery valve.
11）The circulating pump and detection controller of Buchholz relay verification unit are opened, circulation of oil flow flows at this time：From cycle
Pump discharge is fuel-displaced through examining oil inlet pipe 14 to the first to examine into solenoid 12, being examined to the first Buchholz relay 10, to first
Solenoid valve 13, through examining flowline 15 to the import for examining cycle oil storage tank 23, then by oil storage tank delivery valve to pump inlet,
Circulation of oil flow is formed, as shown in Figure 7, Figure 8.
12）Flow control is carried out to circulation of oil flow by adjusting flow speed controller, the first Buchholz relay 10 is examined
It tests.
13）It such as examines the first Buchholz relay 10 qualified, then first closes first and examine into the inspection of solenoid 12 and first
Go out solenoid 13, oil inlet pipe 14 will be examined and the insulating oil 2 in flowline 15 is examined to put to examining in cycle oil storage tank 23, closes
Stop inspection module 24, inspection man makees to terminate, and removes and examines oil inlet pipe 14 and inspection flowline 15.
14）The first qualified Buchholz relay 10 is examined to switch to spare Buchholz relay at this time.
15）Such as 10 disqualified upon inspection of the first Buchholz relay, then inspection module 24 is first closed, by the first Buchholz relay 10
And institute's connecting pipe interior insulation oil 2 is all put to inspection cycle oil storage tank 23 in examining.
16）Underproof first Buchholz relay 10 is removed, qualified Buchholz relay is installed.
17）Underproof Buchholz relay is repaired according to the data of detection controller diagnosis, is carried out again after reparation
It examines, it is such as qualified, then first use is put down, as that can not repair, does and scraps processing.
18）Open inspection module 24, will examine the insulating oil 2 recycled in oil storage tank 23 squeeze into the first gas for newly installing after
In electric appliance 10 and connecting leg.
19）Closing first, which is examined into solenoid 12 and first, verifies solenoid 13, will examine oil inlet pipe 14 and inspection
The insulating oil 2 tested in flowline 15 is put to examining in cycle oil storage tank 23, and inspection module 24 is shut down, and replaces Buchholz relay work
Terminate, removes and examine oil inlet pipe 14 and inspection flowline 15.
20）This stylish first Buchholz relay 10 for replacing qualification switchs to spare Buchholz relay.
21）The inspection of second Buchholz relay 18 more changes jobs equally by this step operation, as shown in Figure 9.
22）Two Buchholz relays are worked respectively, examine and stand-by state cycle carries out, and are reached and are not had a power failure, do not put
Oil X -ray inspection X, replace purpose.
23）When system pressure, which increases to, examines the pressure value of the setting of electro connecting pressure gauge 26 on cycle oil storage tank 23, inspection
The safety valve 25 tested on cycle oil storage tank 23 acts, and when below the pressure value that system decompression, pressure release are extremely set, safety valve 25 is certainly
It is dynamic to close, the safe normal operation of safeguards system.
24）It is inspection module 24 by pre- above to the operation of the experiment of Buchholz relay and diagnosis and each solenoid valve
First setting program is controlled, as shown in Figure 10.
Compared with traditional, disassembly process is oily without putting in transformer body 1, and what is more important no matter examining or
Always there is weight watt protection in replacement process, and traditional weight watt that exit protects several hours.
Claims (6)
1. a kind of application method of the dual transformer Buchholz relay device of experiment free of demolition, which is characterized in that the examination free of demolition
The dual transformer Buchholz relay device tested includes two Buchholz relays, examines oil inlet pipe, examines flowline and inspection module,
One end of each Buchholz relay is equipped with one and works respectively to be examined into solenoid and one into solenoid, each gas relay
The other end of device is equipped with the solenoid and one that works out and verifies that solenoid, two solenoids that work out are divided equally respectively
Not Lian Tong transformer conservator, two work and are respectively connected to the ontology of transformer into solenoid, examine one end of oil inlet pipe
The oil outlet for connecting inspection module is examined the other end correspondence of oil inlet pipe to be examined into solenoid with one and is connected to, described to verify
The oil inlet of one end connection inspection module of oil pipe, examines the other end of flowline to correspond to and verifies that solenoid is connected to one；
In use, a Buchholz relay is in working condition, another Buchholz relay is stand-by state, the gas under working condition after
Corresponding work of electric appliance opens into solenoid, the solenoid that works out and examines into solenoid, verifies that solenoid closes
Close, the Buchholz relay under stand-by state is corresponding to work into solenoid, the solenoid that works out, examine into solenoid and
Verify that solenoid is turned off；
When testing to any Buchholz relay, Buchholz relay to be detected is directly entered test status, if to be detected
Buchholz relay is in working condition before entering test status, then another Buchholz relay enters work by stand-by state in handoff procedure
Make state, the Buchholz relay under test status is corresponding work closed into solenoid, the solenoid that works out and examine into
Solenoid verifies that solenoid is opened with after examining oil inlet pipe, flowline being examined to be connected to respectively, inspection module operation, if
Inspection result is qualification, then qualified Buchholz relay returns to stand-by state, will be underproof if inspection result is unqualified
Insulating oil in Buchholz relay is put to inspection module, replaces Buchholz relay, and inspection module is to the Buchholz relay after replacement
Insulating oil is refilled, the Buchholz relay after replacement enters stand-by state, and Buchholz relay enters in working condition front cavity
Always it is full of insulating oil；
The application method of the dual transformer Buchholz relay device of the experiment free of demolition includes the following steps：
1）Inspection module is configured in advance, set content includes：Examine experimental procedure, requirement and the judgement of Buchholz relay
To the operation order of each solenoid valve under standard and each state；
2）It controls a Buchholz relay to be in working condition, another Buchholz relay is stand-by state；
4）When testing to any Buchholz relay, Buchholz relay to be detected is directly entered test status, if to be detected
Buchholz relay enter test status before be in working condition, then another Buchholz relay is entered by stand-by state in handoff procedure
Working condition；
5）Under test status, circulation of oil flow flow direction when inspection module is run is：From the oil outlet of inspection module successively through examining
Oil inlet pipe, Buchholz relay to be detected, inspection flowline are recycled to the oil inlet of inspection module；
6）Flow velocity and pressure control are carried out to circulation of oil flow by adjusting inspection module, Buchholz relay to be detected is examined
It tests, if inspection result is qualification, qualified Buchholz relay returns to stand-by state, and inspection man makees to terminate, inspection module recycling
It examines oil inlet pipe and examines the insulating oil in flowline, remove and examine oil inlet pipe and examine flowline, if inspection result is not conform to
Lattice then follow the steps 7）；
7）It by underproof Buchholz relay, examines oil inlet pipe and the insulating oil in flowline is examined to put to inspection module, replace
Qualified Buchholz relay, inspection module refills insulating oil to qualified Buchholz relay after replacement, qualified after replacement
Buchholz relay enters stand-by state, and inspection man makees to terminate, and inspection module recycling is examined oil inlet pipe and examined exhausted in flowline
Edge oil is removed and examines oil inlet pipe and inspection flowline；
8）Two Buchholz relays alternately enter working condition, and Buchholz relay enters in working condition front cavity to be full of absolutely always
Edge oil.
2. a kind of application method of the dual transformer Buchholz relay device of experiment free of demolition according to claim 1,
It is characterized in that, the inspection module includes examining cycle oil storage tank and Buchholz relay verification unit, the Buchholz relay inspection
Verification certificate member includes circulating pump, flow speed controller and detection controller, and the oil inlet connection of cycle oil storage tank is examined to examine flowline,
Examine cycle oil storage tank oil outlet by recycle reservoir delivery valve connect circulating pump oil inlet, the circulating pump it is fuel-displaced
Oil inlet pipe is examined in mouthful connection, and the flow speed controller connects circulating pump, the detection controller be separately connected Buchholz relay with
Flow speed controller.
3. a kind of application method of the dual transformer Buchholz relay device of experiment free of demolition according to claim 2,
It is characterized in that, the inspection cycle oil storage tank is equipped with electro connecting pressure gauge and safety valve, and pressure in oil storage tank is recycled when examining
Increase to electro connecting pressure gauge setting pressure value when, safety valve action, pressure release to setting pressure value below after, safety valve close
It closes.
4. a kind of application method of the dual transformer Buchholz relay device of experiment free of demolition according to claim 1,
It is characterized in that, the inspection module is set in removable vehicle body.
5. a kind of application method of the dual transformer Buchholz relay device of experiment free of demolition according to claim 2,
It is characterized in that, the oil outlet of the detection controller control loop pump conveys insulating oil into Buchholz relay to be detected, leads to
The flow velocity and pressure for crossing flow speed controller adjustment insulating oil, carry out the different abnormalities of analogue transformer, if in the change of each simulation
Under the abnormality of depressor, Buchholz relay to be detected can correspond to and send out correct signal value, then the Buchholz relay
Inspection result is qualification, conversely, then unqualified.
6. a kind of application method of the dual transformer Buchholz relay device of experiment free of demolition according to claim 1,
It is characterized in that, further includes step：According to the data of inspection module diagnosis to step 7）Underproof gas relay under middle replacement
Device is accordingly repaired, and is tested again after reparation, if qualified, as using next time, if can not repair, done and is scrapped place
Reason.
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| KR101103817B1 (en) * | 2009-10-16 | 2012-01-06 | 한전케이피에스 주식회사 | Test equipment for buchholz relay |
| CN202662525U (en) * | 2012-06-21 | 2013-01-09 | 孙兵 | Gas relay device with online detection function |
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