CN206990720U - A kind of fault recognition circuit of transformer - Google Patents
A kind of fault recognition circuit of transformer Download PDFInfo
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- CN206990720U CN206990720U CN201721003191.2U CN201721003191U CN206990720U CN 206990720 U CN206990720 U CN 206990720U CN 201721003191 U CN201721003191 U CN 201721003191U CN 206990720 U CN206990720 U CN 206990720U
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Abstract
The utility model embodiment discloses a kind of fault recognition circuit of transformer, the transformer fault detected is sent to control display circuit by fault detection unit, and by controlling the malfunction coefficient branch road in display circuit to carry out malfunction coefficient to fault message, solve existing transformer can not intuitively to show phenomenon of the failure, so that maintenance staff need just investigate thoroughly failure cause by the measurement of instrument instrument in maintenance, it is impossible to confirm the technical problem of failure in a short time.
Description
Technical field
It the utility model is related to transformer technology field, more particularly to a kind of fault recognition circuit of transformer.
Background technology
Oil-filled transformer is due to small with leakage field, and high mechanical strength, anti-short circuit capability is strong, the advantages that high mechanical strength,
It is widely applied at present in height voltage electric grid.
Substantial amounts of transformer comes into operation, and the failure that the transformer in power distribution network occurs is also just more and more, such as not in time
Recover, the life of resident can be impacted, therefore can quickly confirm the failure cause of transformer and fix a breakdown, have important
Meaning.
Transformer of the prior art typically has failure protection function, but phenomenon of the failure is not shown intuitively
Show, result in maintenance staff can not directly confirm the technical problem of failure in maintenance in a short time.
Utility model content
The utility model discloses a kind of fault recognition circuit of transformer, and solving existing transformer can not show to failure
As intuitively being shown so that maintenance staff need just investigate thoroughly failure cause by the measurement of instrument instrument in maintenance, no
The technical problem of failure can be confirmed in a short time.
The utility model provides a kind of fault recognition circuit of transformer, including：Control display circuit and at least two
Fault detection unit；
At least two fault detection unit is set on the transformer；
The control display circuit includes：Control display circuit positive electrode bus, control display circuit negative electrode bus and at least
Two malfunction coefficient branch roads；
The malfunction coefficient branch road is connected to the control display circuit positive electrode bus and the control display circuit negative pole
Between bus；
The malfunction coefficient branch road is used to get the different transformer fault information that the fault detection unit is sent, and
Carry out different malfunction coefficients；
The fault detection unit corresponds with the malfunction coefficient branch road.
Preferably, the fault detection unit includes：First electric source monitoring circuit, second source observation circuit；
The malfunction coefficient branch road includes：Fisrt fault shows branch road, the second malfunction coefficient branch road；
First electric source monitoring circuit includes：Relay K1, the relay K1 connect with high voltage side of transformer power line
Connect, when high voltage side of transformer power supply decompression, the relay K1 dead electricity；
The Fisrt fault shows that branch road includes：Relay K1 instantaneous normally-closed contact and LED 3, it is described
Relay K1 instantaneous normally-closed contact and the LED 3 is connected in series；
The second source observation circuit includes：Relay K2, the relay K2 connect with step down side power line
Connect, when step down side Non voltage output, the relay K2 dead electricity；
The second malfunction coefficient branch road includes：Relay K2 instantaneous normally-closed contact, the relay K1 it is instantaneous often
The instantaneous normally-closed contact and LED 6 of closed contact, high-pressure side main switch QF1, the relay K2's is instantaneous normally closed tactile
Point, the instantaneous normally-closed contact of the relay K1, the instantaneous normally-closed contact of the high-pressure side main switch QF1 and the light-emitting diodes
Pipe LED6 is connected in series.
Preferably, the fault detection unit includes：Oil level relay, temperature relay and Buchholz relay；
The malfunction coefficient branch road includes：3rd malfunction coefficient branch road, the 4th malfunction coefficient branch road and the 5th malfunction coefficient
Branch road；
The oil level relay is set on the transformer, and the oil level relay presets position when transformer oil level position is less than
Obtained when putting electric；
The 3rd malfunction coefficient branch road includes：The instantaneous normally opened contact and light emitting diode of the oil level relay
LED7, the instantaneous normally opened contact and the LED 7 of the oil level relay are connected in series；
The temperature relay is set on the transformer, electric when being obtained when transformer temperature is more than temperature preset value；
The 4th malfunction coefficient branch road includes：The instantaneous normally opened contact and light emitting diode of the temperature relay
LED8, the instantaneous normally opened contact and the LED 8 of the temperature relay are connected in series；
The Buchholz relay is set on the transformer, is obtained when transformer gas density is more than concentration preset value electric；
The 5th malfunction coefficient branch road includes：The instantaneous normally opened contact and light emitting diode of the Buchholz relay
LED9, the instantaneous normally opened contact and the LED 9 of the Buchholz relay are connected in series.
Preferably, the fault recognition circuit of transformer also includes：High-pressure side main switch branch road and low-pressure side main switch branch road；
The high-pressure side main switch branch road and the low-pressure side main switch branch road are connected to the control display circuit
Between positive electrode bus and the control display circuit negative electrode bus；
The high-pressure side main switch branch road includes：High-pressure side main switch QF1 instantaneous normally-closed contact and light emitting diode
LED4, the high-pressure side main switch QF1 instantaneous normally-closed contact and the LED 4 are connected in series；
The low-pressure side main switch branch road includes：Low-pressure side main switch QF2 instantaneous normally-closed contact and light emitting diode
LED5, the low-pressure side main switch QF2 instantaneous normally-closed contact and the LED 5 are connected in series.
Preferably, the control display circuit also includes：
Relay K4, relay K4 instantaneous normally opened contact, relay K5 and relay K5 instantaneous normally opened contact；
The relay K4 is connected in parallel on the both ends of LED 3, the instantaneous normally opened contact of the relay K4 with
The instantaneous normally-closed contact of the relay K1 is connected in parallel；
The relay K5 is connected in parallel with the LED 6；
The instantaneous normally opened contact of the relay K5 and the relay K2 instantaneous normally-closed contact, the relay K1
Instantaneous normally-closed contact, and the series arm of the instantaneous normally-closed contact formation of the high-pressure side main switch QF1 are in parallel.
Preferably, the control display circuit also includes：
Relay K6, relay K6 instantaneous normally opened contact, relay K7, relay K7 instantaneous normally opened contact, relay
Device K8, relay K8 instantaneous normally opened contact；
The relay K6 is connected in parallel on the both ends of LED 7, and the instantaneous normally opened contact of the relay K6 is simultaneously
It is associated in the instantaneous normally opened contact both ends corresponding with the oil level relay；
The relay K7 is connected in parallel on the both ends of LED 8, and the instantaneous normally opened contact of the relay K7 is simultaneously
It is associated in the instantaneous normally opened contact both ends of the temperature relay；
The relay K8 is connected in parallel on the both ends of LED 9, and the instantaneous normally opened contact of the relay K8 is simultaneously
It is associated in the instantaneous normally opened contact both ends of the Buchholz relay.
Preferably, the fault recognition circuit of transformer also includes：Switching Power Supply；
The cathode output end of the Switching Power Supply is connected with the control display circuit positive electrode bus, the Switching Power Supply
Cathode output end is connected with the control display circuit negative electrode bus, input and the step down side electricity of the Switching Power Supply
Source line connection.
Preferably, the fault recognition circuit of transformer also includes：Standby power unit and prime control unit；
The prime control unit specifically includes：Time relay KT1, time relay KT1 on-delay are normally opened to be touched
Point, relay K3, the first of relay K3 the instantaneous normally opened contact, the second of relay K3 the instantaneous normally opened contact；
One end of the time relay KT1 is connected with the cathode output end of the Switching Power Supply, forms first node, separately
One end is connected with the cathode output end of the Switching Power Supply, forms section point；
The on-delay normally opened contact of the time relay KT1 forms the first series arm after being connected with relay K3,
First series arm is connected in parallel with the time relay KT1；
The first instantaneous normally opened contact of the relay K3 is being arranged on the first node and the control display circuit just
Between the bus of pole；
The second instantaneous normally opened contact of the relay K3 is arranged on the section point and the control display circuit is born
Between the bus of pole；
The standby power unit includes：Electrical energy supply device, standby power unit positive electrode bus, standby power unit are born
Pole bus, relay K10, the first of relay K10 the instantaneous normally opened contact, the second of relay K10 the instantaneous normally opened contact, time
Relay KT1 instantaneous normally-closed contact, time relay KT3, time relay KT3 on-delay normally opened contact；
Standby power unit positive electrode bus is shown by the first instantaneous normally opened contact of the relay K10 with the control
Circuit anode bus connects, the second instantaneous normally opened contact that the standby power unit negative electrode bus passes through the relay K10
It is connected with the control display circuit negative electrode bus, the electrical energy supply device is connected to the standby power unit positive electrode bus
Between the standby power unit negative electrode bus；
After the instantaneous normally-closed contact of the time relay KT1 is connected with the time relay KT3, it is connected to described standby
With between power subsystem positive electrode bus and the standby power unit negative electrode bus；
When the on-delay normally opened contact of the time relay KT3 is connected in parallel on described after being connected with the relay K10
Between relay KT3 both ends.
Preferably, the prime control unit also includes：
LED 1, time relay KT1 instantaneous normally opened contact, LED 2, relay K10
3rd instantaneous normally opened contact；
The LED 1 connects to form the second series connection branch with the instantaneous normally opened contact of the time relay KT1
Road, second series arm are connected in parallel on the both ends of the time relay KT1；
The LED 2 is connected to the control after being connected with the 3rd instantaneous normally opened contact of the relay K10
Between display circuit positive electrode bus processed and the control display circuit negative electrode bus.
Preferably, the fault recognition circuit of transformer also includes：Charging device 17, air switch F4, air switch F5；
Described one end of charging device 17 is connected by the air switch F4 with the standby power unit positive electrode bus, separately
One end is connected by the air switch F5 with the standby power unit negative electrode bus.
Preferably, the fault recognition circuit of transformer also includes：Try lamp switch SB2, time relay KT2, time relay
It is device K2 the first on-delay switch, time relay K2 the second on-delay switch, the first of time relay KT2 instantaneous
Second instantaneous normally closed switch of normally closed switch and time relay K2；
The examination lamp switch SB2 is connected to the standby power unit positive pole after being connected with the time relay KT2 female
Between line and the standby power unit negative electrode bus；
The first on-delay switch in parallel of the time relay KT2 is second instantaneous normally opened the relay K10's
Contact both ends；
One end of the second on-delay switch of the time relay KT2 connects with the standby power unit positive electrode bus
Connect, the other end respectively with the LED 3, LED 4, the LED 5, described
LED 6, the LED 7, the LED 8 and the LED 9 are just
Pole connects；
The first instantaneous normally closed switch of the time relay KT2 is connected to the first node and the Switching Power Supply
Between cathode output end；
The second instantaneous normally closed switch of the time relay KT2 is connected to the section point and the Switching Power Supply
Between cathode output end.
As can be seen from the above technical solutions, the utility model at least has advantages below：
The fault recognition circuit of transformer provided by the utility model, the transformer that will be detected by fault detection unit
Failure is sent to control display circuit, and by controlling the malfunction coefficient branch road in display circuit to carry out intuitively fault message
It has been shown that, solving existing transformer can not intuitively be shown to phenomenon of the failure so that maintenance staff need logical in maintenance
Failure cause can just be investigated thoroughly by crossing the measurement of instrument instrument, it is impossible to confirm the technical problem of failure in a short time.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the fault recognition circuit for transformer that the utility model embodiment provides；
Fig. 2 is that a kind of transformer external structure of the fault recognition circuit for transformer that the utility model embodiment provides is shown
It is intended to；
Wherein, marked in figure as follows：
1st, transformer；2nd, oil level relay；3rd, temperature relay；4th, Buchholz relay；5th, malfunction coefficient case；7th, failure mark
Know board；8th, L-type support；9th, the first electric source monitoring circuit；10th, second source observation circuit；11st, Switching Power Supply；12nd, prime controls
Unit；13rd, display circuit negative electrode bus is controlled；14th, display circuit positive electrode bus is controlled；15th, display circuit is controlled；16th, it is standby
Power subsystem；17th, charging device.
Embodiment
In order that those skilled in the art more fully understand the utility model, implement below in conjunction with the utility model
Accompanying drawing in example, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that described reality
It is only part of the embodiment of the present utility model to apply example, rather than whole embodiments.Based on embodiment of the present utility model, sheet
The every other embodiment that art personnel are obtained on the premise of creative work is not made, it is new to belong to this practicality
The scope of type protection.
Refer to Fig. 1 and Fig. 2, a kind of fault recognition circuit of transformer provided by the utility model, including：Control display
The fault detection unit of circuit 15 and at least two；
At least two fault detection units are arranged on transformer 1；
Control display circuit 15 includes：Control display circuit positive electrode bus 14, control display circuit negative electrode bus 13 and extremely
Few two malfunction coefficient branch roads；
Malfunction coefficient branch road is connected between control display circuit positive electrode bus 14 and control display circuit negative electrode bus 13；
Malfunction coefficient branch road is used for the different transformer fault information for getting fault detection unit transmission, and carries out difference
Malfunction coefficient；
Fault detection unit corresponds with malfunction coefficient branch road.
Further, fault detection unit includes：First electric source monitoring circuit 9, second source observation circuit 10；
Malfunction coefficient branch road includes：Fisrt fault shows branch road, the second malfunction coefficient branch road；
First electric source monitoring circuit 9 includes：Relay K1, relay K1 are connected with high voltage side of transformer power line, work as change
During depressor high side power decompression, relay K1 dead electricity；
It should be noted that relay K1 can not be directly connected to high voltage side of transformer power line, air switch F1's
One end is connected with the high side power line of transformer 1, and the other end is connected with fuse FU1 one end, and first fuse FU1's is another
One end is connected with voltage transformer TV1 primary, and voltage transformer TV1 secondary is connected with fuse FU2 one end, and second is molten
Relay K1 is connected between disconnected device the FU2 other end and neutral conductor N.
Fisrt fault shows that branch road includes：Relay K1 instantaneous normally-closed contact and LED 3, relay K1
Instantaneous normally-closed contact and LED 3 be connected in series；
Second source observation circuit 10 includes：Relay K2, relay K2 are connected with step down side power line, work as change
During depressor low-pressure side Non voltage output, relay K2 dead electricity；
It should be noted that relay K1 can not be directly connected to step down side power line, air switch F2, melt
Disconnected device FU3 and relay K2 is connected in series, and air switch F2 one end is connected with the low-side power line of transformer 1, the other end
It is connected with the 3rd fuse FU3, relay K2 is connected between the 3rd fuse FU3 and neutral conductor N.
Second malfunction coefficient branch road includes：Relay K2 instantaneous normally-closed contact, relay K1 instantaneous normally-closed contact, height
Press side main switch QF1 instantaneous normally-closed contact and LED 6, relay K2 instantaneous normally-closed contact, relay K1
Instantaneous normally-closed contact, high-pressure side main switch QF1 instantaneous normally-closed contact and LED 6 are connected in series.
It should be noted that the first electric source monitoring circuit 9 and second source observation circuit 10 can also be replaced with high pressure
Side or low-pressure side respectively set a current transformer, the current signal that current transformer gathers are inputed into Hall sensor, profit
Electric current is measured with Hall sensor, and then realizes the purpose to power detecting, and is exported in a manner of on-off model.
Further, fault detection unit includes：Oil level relay 2, temperature relay 3 and Buchholz relay 4；
Malfunction coefficient branch road includes：3rd malfunction coefficient branch road, the 4th malfunction coefficient branch road and the 5th malfunction coefficient branch road；
Oil level relay 2 is set on the transformer, and oil level relay 2 obtains when transformer oil level position is less than predeterminated position
Electricity；
3rd malfunction coefficient branch road includes：The instantaneous normally opened contact and LED 7 of oil level relay 2, oil level after
The instantaneous normally opened contact and LED 7 of electrical equipment 2 are connected in series；
Temperature relay 3 is set on the transformer, electric when being obtained when transformer temperature is more than temperature preset value；
4th malfunction coefficient branch road includes：The instantaneous normally opened contact and LED 8 of temperature relay 3, temperature after
The instantaneous normally opened contact and LED 8 of electrical equipment 3 are connected in series；
Buchholz relay 4 is set on the transformer, is obtained when transformer gas density is more than concentration preset value electric；
5th malfunction coefficient branch road includes：The instantaneous normally opened contact and LED 9 of Buchholz relay 4, gas after
The instantaneous normally opened contact and LED 9 of electrical equipment 4 are connected in series.
It should be noted that the position of oil level relay 2, temperature relay 3 and Buchholz relay 4 can be according to actual demand
Set, the set location in figure is only a kind of embodiment, is not limited here.
Control display circuit 15 in the present embodiment is arranged in malfunction coefficient case 5, in practice can be according to real needs
Set, do not limit here；
Malfunction coefficient case 5 is placed in the outside of transformer 1, can be fixed on two by two L-type supports 8, malfunction coefficient case 5
In individual L-type support 8, L-type support 8 can be made of preferably U-shaped iron welding, also can integrally casting be made, both can guarantee that fixed stably
Gu also saving consumptive material, mitigate weight, do not limit here.
Each light emitting diode is preferably provided on the chamber door of malfunction coefficient case 5, and the downside of each light emitting diode can have
If corresponding failure identification board 7, failure identification board 7 is the Sign Board with failure title, and Sign Board can be by plastic plate or aluminium
Plate is made, and is then attached to the downside of light emitting diode, alternatively, it is also possible to which directly Status Name is being lighted using laser printing
On chamber door on the downside of diode, do not limit here.
By checking the state and failure identification board 7 of light emitting diode, the failure cause of transformer can be quickly confirmed.
Further, in addition to：High-pressure side main switch branch road and low-pressure side main switch branch road；
High-pressure side main switch branch road and low-pressure side main switch branch road are connected to the He of control display circuit positive electrode bus 14
Between control display circuit negative electrode bus 13；
High-pressure side main switch branch road includes：High-pressure side main switch QF1 instantaneous normally-closed contact and LED 4 is high
Pressure side main switch QF1 instantaneous normally-closed contact and LED 4 is connected in series；
Low-pressure side main switch branch road includes：Low-pressure side main switch QF2 instantaneous normally-closed contact and LED 5 is low
Pressure side main switch QF2 instantaneous normally-closed contact and LED 5 is connected in series.
Further, control display circuit 15 also includes：
Relay K4, relay K4 instantaneous normally opened contact, relay K5 and relay K5 instantaneous normally opened contact；
Relay K4 is connected in parallel on the both ends of LED 3, relay K4 instantaneous normally opened contact and relay K1 wink
When normally-closed contact be connected in parallel；
Relay K5 is connected in parallel with LED 6；
Relay K5 instantaneous normally opened contact and relay K2 instantaneous normally-closed contact, the instantaneous of relay K1 normally closed touch
Point, and the series arm of high-pressure side main switch QF1 instantaneous normally-closed contact formation are in parallel.
Further, control display circuit 15 also includes：
Relay K6, relay K6 instantaneous normally opened contact, relay K7, relay K7 instantaneous normally opened contact, relay
Device K8, relay K8 instantaneous normally opened contact；
Relay K6 is connected in parallel on the both ends of LED 7, relay K6 instantaneous normally opened contact be connected in parallel on oil level after
Instantaneous normally opened contact both ends corresponding to electrical equipment 2；
Relay K7 is connected in parallel on the both ends of LED 8, and relay K7 instantaneous normally opened contact is connected in parallel on temperature relay
The instantaneous normally opened contact both ends of device 3；
Relay K8 is connected in parallel on the both ends of LED 9, and relay K8 instantaneous normally opened contact is connected in parallel on gas relay
The instantaneous normally opened contact both ends of device 4.
It is understood that all elements in each series arm are connected in series；
Each malfunction coefficient branch road in the present embodiment all corresponds to a kind of fault detect element in fault detection unit,
So that the luminous corresponding different fault type of each light emitting diode；
It should be noted that when high side power decompression, relay K1 dead electricity, its normally-closed contact closure, light-emitting diodes
Pipe LED3 obtains electroluminescence, and relay K4 obtains electric, its normally opened contact closure, for LED 3 to be kept into luminous, expression
High voltage power supply decompression is alarmed；
When high-pressure side main switch QF1 disconnects, normally-closed contact corresponding to the main switch QF1 of high-pressure side closes, light emitting diode
LED4 obtains electroluminescence, represents high-pressure side main switch QF1 disconnecting warnings；
When there is phenomena such as short circuit, overload, three-phase voltage is unbalanced in step down side, low-pressure side main switch QF2 meetings
Disconnect, low-pressure side main switch QF2 normally-closed contacts closure, LED 5 obtains electroluminescence, represents that low-pressure side main switch QF2 breaks
Open alarm；
When high side power is normal, high-pressure side main switch QF1 closures when, relay K1 normally opened contact and high-pressure side is main opens
The normally opened contact for closing QF1 closes, if detecting transformer secondary Non voltage output, relay K2 dead electricity, and its normally-closed contact
Closure, LED 6 electroluminescence, relay K5 obtain it is electric, its normally opened contact closure make LED 6 keep hair
Light, indication transformer internal functionality fault alarm；
When oil level is low, oil level relay 2 must be electric, instantaneous normally opened contact closure corresponding with oil level relay 2, and luminous two
Pole pipe LED7 obtains electroluminescence, and relay K6 obtains electric, and its normally opened contact closure makes light emitting diode keep luminous, represents the low report of oil level
It is alert；
After transformer temperature reaches the setting value of temperature switch, temperature relay 3 must be electric, corresponding with temperature relay 3
Instantaneous normally opened contact closure, LED 8 electroluminescence, relay K7 obtain it is electric, its normally opened contact closure, make to light
Diode (LED) 8 keeps luminous, the high alarm of indication transformer temperature；
When gas density reaches certain value, the action of Buchholz relay 4 closes its normally opened contact, LED 9
Electroluminescence, relay K8 obtain electric, close its normally opened contact, LED 9 is kept luminous, represent gas density
Height alarm；
Further, the fault recognition circuit of transformer also includes：Switching Power Supply 11；
The cathode output end of Switching Power Supply 11 is connected with control display circuit positive electrode bus 14, and the negative pole of Switching Power Supply 11 is defeated
Go out end to be connected with control display circuit negative electrode bus 13, the input of Switching Power Supply 11 is connected with step down side power line.
It should be noted that the input of the Switching Power Supply 11 in the present embodiment can be mains supply, battery etc., open
Powered-down source 11 can be isolation type switching power supply 11, or non-isolated Switching Power Supply 11.
Further, in addition to：Standby power unit 16 and prime control unit 12；
Prime control unit 12 specifically includes：Time relay KT1, time relay KT1 on-delay normally opened contact,
Relay K3, the first of relay K3 the instantaneous normally opened contact, the second of relay K3 the instantaneous normally opened contact；
Time relay KT1 one end is connected with the cathode output end of Switching Power Supply 11, formed first node, the other end with
The cathode output end connection of Switching Power Supply 11, forms section point；
Time relay KT1 on-delay normally opened contact forms the first series arm after being connected with relay K3, and first
Series arm is connected in parallel with time relay KT1；
Relay K3 the first instantaneous normally opened contact is arranged between first node and control display circuit positive electrode bus 14；
Relay K3 the second instantaneous normally opened contact is arranged between section point and control display circuit negative electrode bus 13；
Standby power unit 16 includes：Electrical energy supply device, standby power unit positive electrode bus, standby power unit negative pole
Bus, relay K10, the first of relay K10 the instantaneous normally opened contact, the second of relay K10 the instantaneous normally opened contact, the time after
Electrical equipment KT1 instantaneous normally-closed contact, time relay KT3, time relay KT3 on-delay normally opened contact；
The the first instantaneous normally opened contact and control display circuit positive pole that standby power unit positive electrode bus passes through relay K10
Bus 14 connects, the second instantaneous normally opened contact and control display circuit that standby power unit negative electrode bus passes through relay K10
Negative electrode bus 13 connects, electrical energy supply device be connected to standby power unit positive electrode bus and standby power unit negative electrode bus it
Between；
After time relay KT1 instantaneous normally-closed contact is connected with time relay KT3, standby power unit is being connected to just
Between pole bus and standby power unit negative electrode bus；
Time relay KT3 on-delay normally opened contact is connected in parallel on time relay KT3 two after being connected with relay K10
End.
Further, prime control unit 12 also includes：
LED 1, time relay KT1 instantaneous normally opened contact, LED 2, relay K10
3rd instantaneous normally opened contact；
LED 1 connects to form the second series arm with time relay KT1 instantaneous normally opened contact, and second
Series arm is connected in parallel on time relay KT1 both ends；
LED 2 is being connected to control display circuit just after being connected with relay K10 the 3rd instantaneous normally opened contact
Between pole bus 14 and control display circuit negative electrode bus 13.
Further, in addition to：Charging device 17, air switch F4, air switch F5；
The one end of charging device 17 is connected by air switch F4 with standby power unit positive electrode bus, and the other end passes through air
Switch F5 is connected with standby power unit negative electrode bus.
Further, in addition to：Try lamp switch SB2, time relay KT2, time relay K2 the first on-delay
The second on-delay switch, the first of time relay KT2 the instantaneous normally closed switch and time relay of switch, time relay K2
Device K2 the second instantaneous normally closed switch；
Examination lamp switch SB2 is connected to standby power unit positive electrode bus and stand-by power supply after being connected with time relay KT2
Between unit negative electrode bus；
Time relay KT2 the first on-delay switch in parallel is at relay K10 the second instantaneous normally opened contact both ends；
One end of time relay KT2 the second on-delay switch is connected with standby power unit positive electrode bus, another
End respectively with LED 3, LED 4, LED 5, LED 6, light-emitting diodes
Pipe LED7, LED 8 connect with the positive pole of LED 9；
Time relay KT2 the first instantaneous normally closed switch is connected to first node and the cathode output end of Switching Power Supply 11
Between；
Time relay KT2 the second instantaneous normally closed switch is connected to section point and the cathode output end of Switching Power Supply 11
Between.
Time relay KT3 both ends can be with buzzer in parallel；
During to ensure main power source cell failure, fault display circuit still can be with normal work, the utility model embodiment
Include standby power unit 16, when Switching Power Supply 11 powers normal, in the case where not pressing examination lamp switch, time relay
Device KT2 is in power failure state, and its instantaneous normally-closed contact closure, Switching Power Supply 11 is connected with prime control unit 12, and be delayed relay
Device KT1 obtains electric, its instantaneous normally opened contact closure, LED 1 electroluminescence, represent that Switching Power Supply 11 is powered normally；
Time-delay relay KT1 obtain it is electric after start timing, after setting time is reached, its on-delay normally opened contact closure.
Relay K3 obtains electric, its normally opened contact closure；
When transformer power-off or air switch F3 disconnections or fuse FU4 fusing or 11 operation irregularity of Switching Power Supply, when
Between relay KT1 dead electricity, its on-delay normally opened contact disconnects, and instantaneous normally-closed contact closure, the lamp of LED 1 goes out, after
Electrical equipment K3 dead electricity, relay K3 normally opened contact disconnects, while time relay KT3 obtains electric timing, and buzzer BZ obtains electric send
Alarm sound, after time relay KT3 timing reaches setting value, its on-delay normally opened contact closure, obtain relay K10
Electricity, relay K10 normally opened contacts closure, standby power unit 16 are powered to rear class control unit, and relay K10 normally opened contacts close
Close, LED 2 is obtained electroluminescence, represent the input power supply of standby power unit 16；
After Switching Power Supply 11 recovers normal, time relay KT1 again electric, its instantaneous normally-closed contact disconnection, the time
Relay KT3 dead electricity, time relay KT3 on-delay normally opened contact disconnect, and standby power unit 16 stops to rear class control
Unit power supply processed.Powered again to rear class control unit when time relay KT1 timing reaches setting value Switching Power Supply 11；
In the regular tours of inspection of operator on duty, examination button SB2 can be pressed and check whether light emitting diode is normal, presses
After trying button SB2, time-delay relay KT2 obtains electric, and its instantaneous normally-closed contact disconnects, and is set when time relay KT2 timing reaches
After definite value, its on-delay normally opened contact closure, LED 1 to LED 9 is by power supply power supply unit
Power supply light emitting, illustrate that the light emitting diode may be damaged, it is necessary to change if not luminous, pressing examination button SB2 can also test out
Whether battery GB is normal.
It should be noted that in practical application, reset switch SB1, relay K9 and and relay can be accessed in circuit
Instantaneous normally-closed contact K9 corresponding to K9, reset switch SB1, relay K9 series connection after be connected to standby power unit positive electrode bus and
Between standby power unit negative electrode bus, instantaneous normally-closed contact K9 corresponding with relay K9 is connected on each malfunction coefficient branch road
On.After warning message is confirmed by relevant persons in charge, SR SB1 can be pressed alarm is resetted, alarm signal
The light emitting diode of disappearance stops lighting after the reset, still in the alarm signal of alarm condition, its corresponding light emitting diode
It may proceed to light after the reset；
It should be noted that above-mentioned time relay KT1, time relay KT2 and time relay KT3 setting times are excellent
Elect 1s as.By the time-lag action of time-delay relay, when switching power supply mode, make Switching Power Supply 11 and standby power unit 16
Between first isolate, then switch, prevent from producing rush of current to other side, cause device damage, such as dashed forward when Switching Power Supply 11 is powered
So there is exception, normally opened contact corresponding with relay K3 instantaneously disconnects, prime display circuit is isolated with rear class display circuit,
Normally opened contact corresponding with relay K10 just closes at the end of time relay KT2 timing, realizes delay power supply.Similarly, exist
Standby power unit 16 is powered, and when Switching Power Supply 11 recovers normal, time relay KT1 obtains electric, its instantaneous normally-closed contact disconnection,
Relay K10 and the equal dead electricity of time relay KT3, K10 corresponding with relay normally opened contact disconnect, and it is single to be initially switched off rear class control
Member and standby power unit 16 between connection, after time relay KT1 reaches timing, relay K3 just it is electric, postpone to
Rear class unit is powered.The principle for trying lamp process is same as described above.
The utility model embodiment detects the failure of transformer by least two fault detection units, and will detect
Transformer fault information sends the fault display unit into fault display circuit, and fault message is entered by light emitting diode
Portable lighter light shows that solving existing transformer can not intuitively be shown to phenomenon of the failure so that maintenance staff are in maintenance
Need just investigate thoroughly failure cause by the measurement of instrument instrument, it is impossible to confirm the technical problem of failure in a short time；By setting
It is equipped with prime display unit and standby power unit 16 so that fault recognition circuit can continue just in 11 failure of Switching Power Supply
Often work.
A kind of fault recognition circuit of transformer provided by the utility model is described in detail above, for this
The those skilled in the art in field, according to the thought of the utility model embodiment, can in specific embodiments and applications
There is change part, in summary, this specification content should not be construed as to limitation of the present utility model.
Claims (11)
- A kind of 1. fault recognition circuit of transformer, it is characterised in that including：Control display circuit and at least two fault detects Unit；At least two fault detection unit is set on the transformer；The control display circuit includes：Control display circuit positive electrode bus, control display circuit negative electrode bus and at least two Malfunction coefficient branch road；The malfunction coefficient branch road is connected to the control display circuit positive electrode bus and the control display circuit negative electrode bus Between；The malfunction coefficient branch road is used to get the different transformer fault information that the fault detection unit is sent, and carries out Different malfunction coefficients；The fault detection unit corresponds with the malfunction coefficient branch road.
- A kind of 2. fault recognition circuit of transformer according to claim 1, it is characterised in that the fault detection unit Including：First electric source monitoring circuit, second source observation circuit；The malfunction coefficient branch road includes：Fisrt fault shows branch road, the second malfunction coefficient branch road；First electric source monitoring circuit includes：Relay K1, the relay K1 are connected with high voltage side of transformer power line, when During high voltage side of transformer power supply decompression, the relay K1 dead electricity；The Fisrt fault shows that branch road includes：Relay K1 instantaneous normally-closed contact and LED 3, the relay Device K1 instantaneous normally-closed contact and the LED 3 is connected in series；The second source observation circuit includes：Relay K2, the relay K2 are connected with step down side power line, when During step down side Non voltage output, the relay K2 dead electricity；The second malfunction coefficient branch road includes：The instantaneous normally-closed contact of the relay K2, the relay K1 it is instantaneous often The instantaneous normally-closed contact and LED 6 of closed contact, high-pressure side main switch QF1, the relay K2's is instantaneous normally closed tactile Point, the instantaneous normally-closed contact of the relay K1, the instantaneous normally-closed contact of the high-pressure side main switch QF1 and the light-emitting diodes Pipe LED6 is connected in series.
- A kind of 3. fault recognition circuit of transformer according to claim 1, it is characterised in that the fault detection unit Including：Oil level relay, temperature relay and Buchholz relay；The malfunction coefficient branch road includes：3rd malfunction coefficient branch road, the 4th malfunction coefficient branch road and the 5th malfunction coefficient branch road；The oil level relay is set on the transformer, and the oil level relay is when transformer oil level position is less than predeterminated position Obtain electric；The 3rd malfunction coefficient branch road includes：The instantaneous normally opened contact and LED 7 of the oil level relay, institute The instantaneous normally opened contact and the LED 7 for stating oil level relay are connected in series；The temperature relay is set on the transformer, electric when being obtained when transformer temperature is more than temperature preset value；The 4th malfunction coefficient branch road includes：The instantaneous normally opened contact and LED 8 of the temperature relay, institute The instantaneous normally opened contact and the LED 8 for stating temperature relay are connected in series；The Buchholz relay is set on the transformer, is obtained when transformer gas density is more than concentration preset value electric；The 5th malfunction coefficient branch road includes：The instantaneous normally opened contact and LED 9 of the Buchholz relay, institute The instantaneous normally opened contact and the LED 9 for stating Buchholz relay are connected in series.
- 4. the fault recognition circuit of a kind of transformer according to claim 1, it is characterised in that also include：High-pressure side master Switching branches and low-pressure side main switch branch road；The high-pressure side main switch branch road and the low-pressure side main switch branch road are connected to the control display circuit positive pole Between bus and the control display circuit negative electrode bus；The high-pressure side main switch branch road includes：High-pressure side main switch QF1 instantaneous normally-closed contact and LED 4, institute The instantaneous normally-closed contact and the LED 4 for stating high-pressure side main switch QF1 are connected in series；The low-pressure side main switch branch road includes：Low-pressure side main switch QF2 instantaneous normally-closed contact and LED 5, institute The instantaneous normally-closed contact and the LED 5 for stating low-pressure side main switch QF2 are connected in series.
- A kind of 5. fault recognition circuit of transformer according to claim 2, it is characterised in that the control display circuit Also include：Relay K4, relay K4 instantaneous normally opened contact, relay K5 and relay K5 instantaneous normally opened contact；The relay K4 is connected in parallel on the both ends of LED 3, the instantaneous normally opened contact of the relay K4 with it is described Relay K1 instantaneous normally-closed contact is connected in parallel；The relay K5 is connected in parallel with the LED 6；The instantaneous normally opened contact of the relay K5 and the relay K2 instantaneous normally-closed contact, the relay K1 it is instantaneous Normally-closed contact, and the series arm of the instantaneous normally-closed contact formation of the high-pressure side main switch QF1 are in parallel.
- A kind of 6. fault recognition circuit of transformer according to claim 3, it is characterised in that the control display circuit Also include：Relay K6, relay K6 instantaneous normally opened contact, relay K7, the instantaneous normally opened contact of the relay K7, relay Device K8, the relay K8 instantaneous normally opened contact；The relay K6 is connected in parallel on the both ends of LED 7, and the instantaneous normally opened contact of the relay K6 is connected in parallel on The instantaneous normally opened contact both ends corresponding with the oil level relay；The relay K7 is connected in parallel on the both ends of LED 8, and the instantaneous normally opened contact of the relay K7 is connected in parallel on The instantaneous normally opened contact both ends of the temperature relay；The relay K8 is connected in parallel on the both ends of LED 9, and the instantaneous normally opened contact of the relay K8 is connected in parallel on The instantaneous normally opened contact both ends of the Buchholz relay.
- 7. the fault recognition circuit of a kind of transformer according to claim 1, it is characterised in that also include：Switching Power Supply；The cathode output end of the Switching Power Supply is connected with the control display circuit positive electrode bus, the negative pole of the Switching Power Supply Output end is connected with the control display circuit negative electrode bus, input and the step down side power line of the Switching Power Supply Connection.
- 8. the fault recognition circuit of a kind of transformer according to claim 7, it is characterised in that also include：Stand-by power supply Unit and prime control unit；The prime control unit specifically includes：Time relay KT1, the on-delay of the time relay KT1 are normally opened to be touched Point, relay K3, the first instantaneous normally opened contact of the relay K3, the second of relay K3 the instantaneous normally opened contact；One end of the time relay KT1 is connected with the cathode output end of the Switching Power Supply, forms first node, the other end It is connected with the cathode output end of the Switching Power Supply, forms section point；The on-delay normally opened contact of the time relay KT1 forms the first series arm after being connected with relay K3, described First series arm is connected in parallel with the time relay KT1；The first instantaneous normally opened contact of the relay K3 is arranged on the first node and the control display circuit positive pole is female Between line；The second instantaneous normally opened contact of the relay K3 is arranged on the section point and the control display circuit negative pole is female Between line；The standby power unit includes：Electrical energy supply device, standby power unit positive electrode bus, standby power unit negative pole are female Line, relay K10, the first instantaneous normally opened contact of the relay K10, the relay K10 the second instantaneous normally opened contact, Instantaneous normally-closed contact, time relay KT3, the on-delay of the time relay KT3 of the time relay KT1 is normally opened Contact；First instantaneous normally opened contact and the control display circuit of the standby power unit positive electrode bus by the relay K10 Positive electrode bus connects, and the standby power unit negative electrode bus passes through the second instantaneous normally opened contact of the relay K10 and institute The negative electrode bus connection of control display circuit is stated, the electrical energy supply device is connected to the standby power unit positive electrode bus and institute State between standby power unit negative electrode bus；After the instantaneous normally-closed contact of the time relay KT1 is connected with the time relay KT3, the standby electricity is connected to Between source unit positive electrode bus and the standby power unit negative electrode bus；The on-delay normally opened contact of the time relay KT3 be connected in parallel on after being connected with the relay K10 time after Electrical equipment KT3 both ends.
- A kind of 9. fault recognition circuit of transformer according to claim 8, it is characterised in that the prime control unit Also include：LED 1, the instantaneous normally opened contact of the time relay KT1, LED 2, the relay K10 the 3rd instantaneous normally opened contact；The LED 1 connects to form the second series arm with the instantaneous normally opened contact of the time relay KT1, Second series arm is connected in parallel on the both ends of the time relay KT1；The LED 2 is connected to the control after being connected with the 3rd instantaneous normally opened contact of the relay K10 aobvious Show between circuit anode bus and the control display circuit negative electrode bus.
- 10. the fault recognition circuit of a kind of transformer according to claim 9, it is characterised in that also include：Charging device 17th, air switch F4, air switch F5；Described one end of charging device 17 is connected by the air switch F4 with the standby power unit positive electrode bus, the other end It is connected by the air switch F5 with the standby power unit negative electrode bus.
- 11. the fault recognition circuit of a kind of transformer according to claim 10, it is characterised in that also include：Examination lamp is opened Close SB2, time relay KT2, the first on-delay switch of the time relay K2, the second of the time relay K2 It is on-delay switch, the second of the first instantaneous normally closed switch of the time relay KT2 and the time relay K2 instantaneous Normally closed switch；The examination lamp switch SB2 be connected to after being connected with the time relay KT2 standby power unit positive electrode bus with Between the standby power unit negative electrode bus；Second instantaneous normally opened contact of the first on-delay switch in parallel of the time relay KT2 in the relay K10 Both ends；One end of the second on-delay switch of the time relay KT2 is connected with the standby power unit positive electrode bus, The other end respectively with the LED 3, LED 4, the LED 5, described luminous Diode (LED) 6, the LED 7, the positive pole of the LED 8 and the LED 9 connect Connect；The first instantaneous normally closed switch of the time relay KT2 is connected to the first node and the positive pole of the Switching Power Supply Between output end；The second instantaneous normally closed switch of the time relay KT2 is connected to the section point and the negative pole of the Switching Power Supply Between output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721003191.2U CN206990720U (en) | 2017-08-11 | 2017-08-11 | A kind of fault recognition circuit of transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721003191.2U CN206990720U (en) | 2017-08-11 | 2017-08-11 | A kind of fault recognition circuit of transformer |
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| Publication Number | Publication Date |
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| CN206990720U true CN206990720U (en) | 2018-02-09 |
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| CN201721003191.2U Active CN206990720U (en) | 2017-08-11 | 2017-08-11 | A kind of fault recognition circuit of transformer |
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| CN (1) | CN206990720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003366A (en) * | 2020-08-22 | 2020-11-27 | 江苏瑞墨建筑科技有限公司 | Quick maintenance system of fire control linkage power |
-
2017
- 2017-08-11 CN CN201721003191.2U patent/CN206990720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112003366A (en) * | 2020-08-22 | 2020-11-27 | 江苏瑞墨建筑科技有限公司 | Quick maintenance system of fire control linkage power |
| CN112003366B (en) * | 2020-08-22 | 2021-10-15 | 江苏瑞墨建筑科技有限公司 | Quick maintenance system of fire control linkage power |
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