CN208860913U - A kind of transformer transmission line malfunction monitoring device - Google Patents
A kind of transformer transmission line malfunction monitoring device Download PDFInfo
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Abstract
A kind of transformer transmission line malfunction monitoring device, including power supply unit and monitoring device；Power supply unit connects monitoring device, and power supply unit provides electric energy for monitoring device；Power supply unit includes energy taking device, connection circuit and power supply module AVDD module；Energy taking device is connected to connection circuit, connects circuit connection power supply module AVDD module, and electric energy is inputted power supply module AVDD module by connection circuit by energy taking device；Monitoring device includes current sensing means, observation circuit and warning device；Current sensing means connect observation circuit, and observation circuit connects warning device；The variation of current sensing means monitoring current, is transferred to warning device for the electric current of variation by observation circuit, carries out warning device movement after reaching early warning value.The utility model effectively makes full use of the energy, it is ensured that the real-time of warning device power supply, realizes that the energy directly extracts, does not have to individually power to warning device.
Description
Technical field
The utility model belongs to transformer fault monitoring field, in particular to a kind of transformer transmission line malfunction monitoring is set
It is standby.
Background technique
Power transformer is the core equipment of electric power networks, and the health status and life cycle of transformer can to power grid security
It is extremely crucial by running；In the operation of the transformer, fault diagnosis effectively is carried out to transformer, accurately judges transformer
Operating status and failure development trend, be conducive to the plan of arranging production of producers' science, reduce the generation of accident；Become
Depressor, due to the influence of voltage, heat, chemistry, mechanical oscillation and other factors, it is old to there is insulation in During Process of Long-term Operation
The phenomenon that change, material cracking, it may occur that transformer fault accident；Transformer may be deposited during designing and manufacturing simultaneously
It may also be damaged in some quality problems, and during the installation process, thus will will cause some Hidden faults.
The method that the quantitative analysis of current transformer state mainly uses artificial intelligence, with theoretical research it is continuous into
Exhibition, statistical Data Mining and random process model are gradually used in the state analysis and auxiliary maintaining of transformer equipment in recent years
In decision；But transformer lines malfunction monitoring problem is solved without good mode always, high-power transformer setting position away from
Farther out from city, there is an urgent need to one kind can be with the equipment of intellectual monitoring and the sustainable monitoring device used.
Utility model content
The purpose of this utility model is to provide a kind of transformer transmission line malfunction monitoring devices, to solve above-mentioned ask
Topic.
To achieve the above object, the utility model uses following technical scheme:
A kind of transformer transmission line malfunction monitoring device, including power supply unit and monitoring device；Power supply unit connection prison
Device is surveyed, power supply unit provides electric energy for monitoring device；
Power supply unit includes energy taking device, connection circuit and power supply module AVDD module；Energy taking device is connected to connection electricity
Road, connects circuit connection power supply module AVDD module, and electric energy is inputted power supply module AVDD mould by connection circuit by energy taking device
Block；
Monitoring device includes current sensing means, observation circuit and warning device；Current sensing means connect observation circuit,
Observation circuit connects warning device；The variation of current sensing means monitoring current.
Further, connection circuit includes zener diode VTS, one-way conduction diode VD1, one-way conduction diode
VD2, one-way conduction diode VD3, one-way conduction diode VD4, capacitor C1, resistance R1, capacitor C2, resistance R2, C3, C4, electricity
Hinder R3, capacitor C5, R4, voltage regulator circuit 1 and 0ohm resistance；Zener diode VTS stablizes the voltage that energy taking device induces, pressure stabilizing
The upper end diode VTS connects one-way conduction diode VD1 cathode and one-way conduction diode VD2 anode, one-way conduction diode
VD1 anode connects one-way conduction diode VD3 anode, and it is negative that one-way conduction diode VD2 cathode connects one-way conduction diode VD4
Pole；One-way conduction diode VD4 anode connects the lower end zener diode VTS with one-way conduction diode VD3 cathode；One-way conduction
Diode VD2 cathode connects capacitor C1, resistance R1, capacitor C2 and the one end resistance R2 with one-way conduction diode VD4 cathode；Unidirectionally
Conducting diode VD1 anode connects the another of capacitor C1, resistance R1, capacitor C2 and resistance R2 with one-way conduction diode VD3 anode
It is grounded behind one end；
The resistance R2 other end connects capacitor C3,1 input side of resistance R3, capacitor C5 and voltage regulator circuit, capacitor C3 and resistance R3
Series capacitance C4 and resistance R4 after parallel connection；It is grounded after capacitor C4 and resistance R4 are in parallel, capacitor C5 other end ground connection；Voltage regulator circuit 1
Outlet side connects AVDD module, and with AVDD module subsequent conditioning circuit AGND is connected 1 ground PGND of voltage regulator circuit by 0ohm resistance.
Further, observation circuit includes zener diode VTS, one-way conduction diode VD11, one-way conduction diode
VD21, one-way conduction diode VD31, one-way conduction diode VD41, capacitor C11, resistance R11, capacitor C21, resistance R21, electricity
Hold C31, resistance R31, capacitor C41, capacitor C51, resistance R41, resistance R60, resistance R61, operational amplifier O1, resistance R62, three
Pole pipe F1, resistance R63, resistance R64, resistance R65, resistance R66, resistance R67, resistance R68, operational amplifier O2 and triode
F2；Zener diode VTS is used for the voltage that stabling current sensing device induces, and the connection of the upper end zener diode VTS is unidirectionally led
Logical diode VD11 cathode and one-way conduction diode VD21 anode, one-way conduction diode VD11 anode connect one-way conduction two
Pole pipe VD31 anode, one-way conduction diode VD21 cathode connect one-way conduction diode VD41 cathode；One-way conduction diode
VD41 anode connects the lower end zener diode VTS with one-way conduction diode VD31 cathode；One-way conduction diode VD21 cathode
Capacitor C11, resistance R11, capacitor C21 and the one end resistance R21 are connected with one-way conduction diode VD41 cathode；Two pole of one-way conduction
Pipe VD11 anode connects the capacitor C11, resistance R11, the capacitor C21 other end with one-way conduction diode VD31 anode and is followed by
Ground；
The resistance R21 other end connects capacitor C31, resistance R31, capacitor C51, resistance R60 and resistance R61；Capacitor C31 is another
It is grounded after one end connection C41；It is grounded after resistance R31 other end connection R41；Another termination after capacitor C51 and resistance R60 are in parallel
Ground；Resistance R61 connection operational amplifier O1 noninverting input is grounded after resistance R61 connection capacitor C6；Operational amplifier O1 is reversed
Input terminal connects resistance R62, the pole G of operational amplifier O1 output end connecting triode F1, and the resistance R62 other end connects resistance
R6 and resistance R64, resistance R64 ground connection；AVDD module, the pole S of triode F1 are connected after the pole the D connection resistance R68 of triode F1
Connect resistance R53 and resistance R65；It is grounded after resistance R65 connection resistance R66, resistance R65 connection operational amplifier O2 is inputted in the same direction
End, the pole S of operational amplifier O2 reverse input end connecting triode F2 and resistance R67；Resistance R67 other end ground connection, operation are put
The pole G of big device O2 output end connecting triode F2, the pole D of triode F2 connect warning device.
Further, operational amplifier O1, O2 is rail-to-rail operational amplifier, and AVDD module is operational amplifier O1, O2
Electric energy is provided.
Further, voltage regulator circuit 1 uses LM2596 voltage-dropping type integrated circuit.
Compared with prior art, the utility model has following technical effect:
In the structure of the utility model transformer transmission line malfunction monitoring device, energy equipment is taken to can use transmission line of electricity
Self-energy is that circuit and monitoring device power supply are connected in transformer transmission line malfunction monitoring device；It can be effectively to energy
Source makes full use of, it is ensured that the real-time of warning device power supply, realizes that the energy directly extracts, does not have to individually fill alarm
Set power supply.
In the structure of the utility model transformer transmission line malfunction monitoring device, monitoring device includes electric current induction dress
It sets, observation circuit and warning device；The electric current of variation, is transferred to by the variation of current sensing means monitoring current by observation circuit
Warning device, warning device acts after reaching early warning value, and current sensing means can real-time sensor transformer transmission line of electricity electric current
Situation of change, in the event of a failure, electric current are more than early warning value, by rectifying, filtering and discharging to induced current in observation circuit
After big, start warning device, realize the real-time of monitoring.
Detailed description of the invention
Fig. 1 is the utility model overall schematic.
Fig. 2 is the utility model power supply unit schematic diagram.
Fig. 3 is the utility model monitoring device schematic diagram.
Fig. 4 is the utility model connection circuit diagram.
Fig. 5 is the utility model connection circuit diagram.
In figure: 1, power supply unit；2, monitoring device；11, energy taking device；12, circuit is connected；21, current sensing means；
22, warning device；23, observation circuit.
Specific embodiment
Below in conjunction with attached drawing, the present invention is further described:
Please refer to Fig. 1 to Fig. 5, a kind of transformer transmission line malfunction monitoring device, including power supply unit 1 and monitoring device
2；Power supply unit 1 connects monitoring device 2, and power supply unit 1 is that monitoring device 2 provides electric energy；
Power supply unit 1 includes energy taking device 11, connection circuit 12 and power supply module AVDD module；Energy taking device 11 is connected to
Circuit 12 is connected, connection circuit 12 connects power supply module AVDD module, and energy taking device 11 inputs electric energy by connecting circuit 12
Power supply module AVDD module；
Monitoring device 2 includes current sensing means 21, observation circuit 23 and warning device 22；Current sensing means 21 connect
Observation circuit 23, observation circuit 23 connect warning device 22；The variation of 21 monitoring current of current sensing means, passes through observation circuit 23
The electric current of variation is transferred to warning device 22, carries out the movement of warning device 22 after reaching early warning value.
Connect circuit 12 include zener diode VTS, it is one-way conduction diode VD1, one-way conduction diode VD2, unidirectional
Conducting diode VD3, one-way conduction diode VD4, capacitor C1, resistance R1, capacitor C2, resistance R2, C3, C4, resistance R3, electricity
Hold C5, R4, voltage regulator circuit 1 and 0ohm resistance；Zener diode VTS stablizes the voltage that energy taking device 11 induces, two pole of pressure stabilizing
The upper end pipe VTS connects one-way conduction diode VD1 cathode and one-way conduction diode VD2 anode, and one-way conduction diode VD1 is just
Pole connects one-way conduction diode VD3 anode, and one-way conduction diode VD2 cathode connects one-way conduction diode VD4 cathode；It is single
The lower end zener diode VTS is connected with one-way conduction diode VD3 cathode to conducting diode VD4 anode；Two pole of one-way conduction
Pipe VD2 cathode connects capacitor C1, resistance R1, capacitor C2 and the one end resistance R2 with one-way conduction diode VD4 cathode；One-way conduction
Diode VD1 anode connects the other end of capacitor C1, resistance R1, capacitor C2 and resistance R2 with one-way conduction diode VD3 anode
After be grounded；
The resistance R2 other end connects capacitor C3,1 input side of resistance R3, capacitor C5 and voltage regulator circuit, capacitor C3 and resistance R3
Series capacitance C4 and resistance R4 after parallel connection；It is grounded after capacitor C4 and resistance R4 are in parallel, capacitor C5 other end ground connection；Voltage regulator circuit 1
Outlet side connects AVDD module, and with AVDD module subsequent conditioning circuit AGND is connected 1 ground PGND of voltage regulator circuit by 0ohm resistance.
Observation circuit 23 includes zener diode VTS, one-way conduction diode VD11, one-way conduction diode VD21, list
To conducting diode VD31, one-way conduction diode VD41, capacitor C11, resistance R11, capacitor C21, resistance R21, capacitor C31,
Resistance R31, capacitor C41, capacitor C51, resistance R41, resistance R60, resistance R61, operational amplifier O1, resistance R62, triode
F1, resistance R63, resistance R64, resistance R65, resistance R66, resistance R67, resistance R68, operational amplifier O2 and triode F2；Surely
Pressure diode VTS is used for the voltage that stabling current sensing device 21 induces, and the upper end zener diode VTS connects one-way conduction
Diode VD11 cathode and one-way conduction diode VD21 anode, one-way conduction diode VD11 anode connect two pole of one-way conduction
Pipe VD31 anode, one-way conduction diode VD21 cathode connect one-way conduction diode VD41 cathode；One-way conduction diode
VD41 anode connects the lower end zener diode VTS with one-way conduction diode VD31 cathode；One-way conduction diode VD21 cathode
Capacitor C11, resistance R11, capacitor C21 and the one end resistance R21 are connected with one-way conduction diode VD41 cathode；Two pole of one-way conduction
Pipe VD11 anode connects the another of capacitor C11, resistance R11, capacitor C21 and resistance R21 with one-way conduction diode VD31 anode
It is grounded behind one end；
It is grounded after capacitor C31 other end connection C41；It is grounded after resistance R31 other end connection R41；Capacitor C51 and resistance
The other end is grounded after R60 is in parallel；Resistance R61 connection operational amplifier O1 noninverting input, resistance R61 connection capacitor C6 are followed by
Ground；Operational amplifier O1 reverse input end connects resistance R62, the pole G of operational amplifier O1 output end connecting triode F1, resistance
The R62 other end connects resistance R6 and resistance R64, resistance R64 ground connection；AVDD is connected after the pole the D connection resistance R68 of triode F1
The pole S of module, triode F1 connects resistance R53 and resistance R65；It is grounded after resistance R65 connection resistance R66, resistance R65 connection fortune
Calculate amplifier O2 noninverting input, the pole S of operational amplifier O2 reverse input end connecting triode F2 and resistance R67；Resistance
The pole D of R67 other end ground connection, the pole G of operational amplifier O2 output end connecting triode F2, triode F2 connects warning device
22。
Operational amplifier O1, O2 are rail-to-rail operational amplifier, and AVDD module provides electric energy for operational amplifier O1, O2.
Voltage regulator circuit 1 uses LM2596 voltage-dropping type integrated circuit.
Specific embodiment one
The present embodiment is the specific embodiment of the utility model cable line fault monitoring device.
Transformer transmission line malfunction monitoring device, including power supply unit 1 and monitoring device 2；Power supply unit 1 is monitoring dress
2 offer electric energy are provided；
Power supply unit 1 includes energy taking device 11, connection circuit 12 and power supply module AVDD module；Energy taking device 11 passes through company
It connects the electric energy that electromagnetic induction is collected by circuit 12 and inputs AVDD module；
Zener diode VTS stablizes the voltage that induces of energy taking device 11 in connection circuit 12, on zener diode VTS
End connection one-way conduction diode VD1 cathode and one-way conduction diode VD2 anode, the connection of one-way conduction diode VD1 anode
One-way conduction diode VD3 anode, one-way conduction diode VD2 cathode connect one-way conduction diode VD4 cathode；Unidirectionally lead
Logical diode VD4 anode connects the lower end zener diode VTS with one-way conduction diode VD3 cathode；One-way conduction diode VD2
Cathode connects capacitor C1, resistance R1, capacitor C2 and the one end resistance R2 with one-way conduction diode VD4 cathode；Two pole of one-way conduction
Pipe VD1 anode is followed by with the other end that one-way conduction diode VD3 anode connects capacitor C1, resistance R1, capacitor C2 and resistance R2
Ground；
With the continuous expansion of electric system, natural environment is also ever-changing, once unidirectional short circuit occurs for transmission line of electricity,
When the line faults such as two short circuits, or experience direct lightning strike etc. generate huge dash current, draw-out power supply output is very big
Voltage value has transient state suppression in direct parallel connection after the taking energy coil output end of front end to give the enough protections of backend electronics circuit
The shock resistance protection circuit of diode TVS composition processed, can be by surge voltage clamper in the voltage range of safety；
The resistance R2 other end connects capacitor C3,1 input side of resistance R3, capacitor C5 and voltage regulator circuit, capacitor C3 and resistance R3
Series capacitance C4 and resistance R4 after parallel connection；It is grounded after capacitor C4 and resistance R4 are in parallel, capacitor C5 other end ground connection；Voltage regulator circuit 1
Outlet side connects AVDD module, and with AVDD module subsequent conditioning circuit AGND is connected 1 ground PGND of voltage regulator circuit by 0ohm resistance；
0ohm is isolation PGND and AGND setting；
It is that electromagnetic induction coil takes energy principle that energy taking device 11, which takes energy principle, for by winding winding outside with air gap iron-core
Mode is taken energy on the spot, and coil turn is 400 circles, the iron core with air gap is covered on cable, outer winding is according to electromagnetism sense
Answer law that can induce electric current；The unstable AC energy of the electric current that energy taking device 11 induces connects operation in circuit 12
The equipment such as amplifier need to be powered using direct current, therefore energy taking device 11 is prevented out using Transient Suppression Diode TVS
The appearance of existing overvoltage；VD1, VD2, VD3 and VD4 rectify electric current, and inductance capacitance is filtered to electric current is induced, warp
Over commutation and filtered electric current enter AVDD module.
AVDD module is virtual module, and a low resistance resistance is arranged in AVDD module, defeated for connecting voltage regulator circuit 2
Partial circuit feeder ear after outlet and connection circuit 12.
Monitoring device 2 includes current sensing means 21, observation circuit 23 and warning device 22；Current sensing means 21 monitor
The electric current of variation is transferred to warning device 22 by observation circuit 23 by curent change, and warning device 22 is dynamic after reaching early warning value
Make；
The GSM current alarm that warning device 22 is produced using hundred million side hero Science and Technology Ltd. of Beijing.
GSM current alarm auxiliary system electric energy is provided by AVDD module.
The voltage that zener diode VTS stabling current sensing device 21 induces in observation circuit 23, zener diode
The upper end VTS connects one-way conduction diode VD11 cathode and one-way conduction diode VD21 anode, one-way conduction diode VD11
Anode connection one-way conduction diode VD31 anode, it is negative that one-way conduction diode VD21 cathode connects one-way conduction diode VD41
Pole；One-way conduction diode VD41 anode connects the lower end zener diode VTS with one-way conduction diode VD31 cathode；Unidirectionally lead
Logical diode VD21 cathode connects capacitor C11, resistance R11, capacitor C21 and resistance R21 with one-way conduction diode VD41 cathode
One end；One-way conduction diode VD11 anode connects capacitor C11, resistance R11, capacitor with one-way conduction diode VD31 anode
It is grounded after the other end of C21；
Current sensing means 21 take can principle be electromagnetic induction coil take can principle, for by with wind outside air gap iron-core around
The mode of group is taken energy on the spot, and coil turn is 150 circles, the iron core with air gap is covered on cable, outer winding is according to electricity
Law of magnetic induction can induce electric current；AVDD module is that the equipment such as operational amplifier need to utilize direct current in observation circuit 23
It is powered, current sensing means 21 prevent the appearance of overvoltage using Transient Suppression Diode TVS；VD11, VD21,
VD31 and VD41 rectify electric current, and inductance capacitance is filtered to electric current is induced, through over commutation and filtered electric current
The unstable AC energy of the electric current that sensing device 21 induces enters current amplification circuit in observation circuit 23, puts by operation
Big device O1 and O2 and triode F1 and F2.
The resistance R21 other end connects capacitor C31, resistance R31, capacitor C51, resistance R60 and resistance R61, capacitor C3 and electricity
Series capacitance C4 and resistance R4 after resistance R3 is in parallel；Be grounded after capacitor C4 and resistance R4 is in parallel, capacitor C51 and resistance R60 it is in parallel after
Other end ground connection；Resistance R61 connection operational amplifier O1 noninverting input is grounded after resistance R61 connection capacitor C6；Operation amplifier
Device O1 reverse input end connects resistance R62, the pole G of operational amplifier O1 output end connecting triode F1, and the resistance R62 other end connects
Connecting resistance R6 and resistance R64, resistance R64 ground connection；AVDD module, triode are connected after the pole the D connection resistance R68 of triode F1
The pole S of F1 connects resistance R53 and resistance R65；It is grounded after resistance R65 connection resistance R66, resistance R65 connection operational amplifier O2
Noninverting input, the pole S of operational amplifier O2 reverse input end connecting triode F2 and resistance R67；Another termination of resistance R67
The pole D on ground, the pole G of operational amplifier O2 output end connecting triode F2, triode F2 connects warning device 22；
There is operational amplifier O1 sufficiently large gain feedback voltage clamper is made it equal to reference voltage, available
Into the input current of operational amplifier O1；O1 is the two stage amplifer that conventional input is p-type to pipe, adjusts its relative abundance and is
60 degree；Operational amplifier O2 directly drives constant-current source power tube；By controlling the breadth length ratio of triode F1 and F2, selection is suitable
Resistance, capacitance determine adjustment early warning current value.
Specific embodiment two
The present embodiment is the specific embodiment of the utility model transformer transmission line malfunction monitoring device.
Transformer transmission line malfunction monitoring device, operational amplifier O1 and O2 are rail-to-rail operational amplifier, AVDD mould
Block provides electric energy for operational amplifier O1 and O2.
AVDD module provides electric energy for operational amplifier O1 and O2, and operation model is selected as TLC2252.
AVDD module provides electric energy for operational amplifier O1 and O2.
There is provided electric energy to operational amplifier O1 and O2 using AVDD module can accomplish that energy is uninterrupted, rationally utilize electricity
The energy that cable road generates avoids monitoring remote location, saves material cost.
Specific embodiment three
The present embodiment is the specific embodiment of the utility model transformer transmission line malfunction monitoring device.
Transformer transmission line malfunction monitoring device, voltage regulator circuit 1 use LM2596 voltage-dropping type integrated circuit.
Rectification circuit uses bridge rectifier, as wherein the diode in bridge rectifier and the effect of switch be
, utilize its unilateral conduction；In the positive half cycle of sine wave, two diode current flows, this be obtained on load resistance be
The positive half cycle waveform of sine wave；In the negative half period of sine wave, at this moment other two diode current flow obtains on load resistance
It is the negative half period waveform of sine wave；After the waveform of positive-negative half-cycle is integrated, equidirectional unidirectional pulsating volage waveform is obtained.
LM2596 is buck, has excellent voltage and load regulation；The driving current of 3A can be exported,
Output voltage error range is oscillator within 4% there is good Line and load regulation ability, well LM2596 to adjust again after
Frequency of oscillation error it is lower, have overheating protection and current-limiting protection circuit in chip.
Claims (5)
1. a kind of transformer transmission line malfunction monitoring device, which is characterized in that including power supply unit (1) and monitoring device (2)；
Power supply unit (1) connects monitoring device (2), and power supply unit (1) is that monitoring device (2) provide electric energy；
Power supply unit (1) includes energy taking device (11), connection circuit (12) and power supply module AVDD module；Energy taking device (11) is even
It is connected to connection circuit (12), connection circuit (12) connects power supply module AVDD module, and energy taking device (11) passes through connection circuit
(12) electric energy is inputted into power supply module AVDD module；
Monitoring device (2) includes current sensing means (21), observation circuit (23) and warning device (22)；Current sensing means
(21) observation circuit (23) are connected, observation circuit (23) connects warning device (22)；Current sensing means (21) monitoring current becomes
Change.
2. a kind of transformer transmission line malfunction monitoring device according to claim 1, which is characterized in that connection circuit
(12) include zener diode VTS, one-way conduction diode VD1, one-way conduction diode VD2, one-way conduction diode VD3,
One-way conduction diode VD4, capacitor C1, resistance R1, capacitor C2, resistance R2, C3, C4, resistance R3, capacitor C5, R4, voltage regulator circuit
1 and 0ohm resistance；Zener diode VTS stablizes the voltage that energy taking device (11) induce, and the connection of the upper end zener diode VTS is single
To conducting diode VD1 cathode and one-way conduction diode VD2 anode, one-way conduction diode VD1 anode connects one-way conduction
Diode VD3 anode, one-way conduction diode VD2 cathode connect one-way conduction diode VD4 cathode；One-way conduction diode
VD4 anode connects the lower end zener diode VTS with one-way conduction diode VD3 cathode；One-way conduction diode VD2 cathode and list
To conducting diode VD4 cathode connection capacitor C1, resistance R1, capacitor C2 and the one end resistance R2；One-way conduction diode VD1 anode
It is grounded after connecting the other end of capacitor C1, resistance R1, capacitor C2 and resistance R2 with one-way conduction diode VD3 anode；
The resistance R2 other end connects capacitor C3,1 input side of resistance R3, capacitor C5 and voltage regulator circuit, and capacitor C3 and resistance R3 are in parallel
Series capacitance C4 and resistance R4 afterwards；It is grounded after capacitor C4 and resistance R4 are in parallel, capacitor C5 other end ground connection；Voltage regulator circuit 1 exports
Side connects AVDD module, and with AVDD module subsequent conditioning circuit AGND is connected 1 ground PGND of voltage regulator circuit by 0ohm resistance.
3. a kind of transformer transmission line malfunction monitoring device according to claim 2, which is characterized in that observation circuit
It (23) include zener diode VTS, one-way conduction diode VD11, one-way conduction diode VD21, one-way conduction diode
VD31, one-way conduction diode VD41, capacitor C11, resistance R11, capacitor C21, resistance R21, capacitor C31, resistance R31, capacitor
C41, capacitor C51, resistance R41, resistance R60, resistance R61, operational amplifier O1, resistance R62, triode F1, resistance R63, electricity
Hinder R64, resistance R65, resistance R66, resistance R67, resistance R68, operational amplifier O2 and triode F2；Zener diode VTS is used
In the voltage that stabling current sensing device (21) induces, it is negative that the upper end zener diode VTS connects one-way conduction diode VD11
Pole and one-way conduction diode VD21 anode, one-way conduction diode VD11 anode connect one-way conduction diode VD31 anode,
One-way conduction diode VD21 cathode connects one-way conduction diode VD41 cathode；One-way conduction diode VD41 anode and unidirectional
Conducting diode VD31 cathode connects the lower end zener diode VTS；Two pole of one-way conduction diode VD21 cathode and one-way conduction
Pipe VD41 cathode connects capacitor C11, resistance R11, capacitor C21 and the one end resistance R21；One-way conduction diode VD11 anode and list
It is grounded after connecting the other end of capacitor C11, resistance R11, capacitor C21 to conducting diode VD31 anode；
The resistance R21 other end connects capacitor C31, resistance R31, capacitor C51, resistance R60 and resistance R61；The capacitor C31 other end connects
It is grounded after meeting C41；It is grounded after resistance R31 other end connection R41；The other end is grounded after capacitor C51 and resistance R60 are in parallel；Resistance
R61 connection operational amplifier O1 noninverting input is grounded after resistance R61 connection capacitor C6；Operational amplifier O1 reverse input end
Resistance R62, the pole G of operational amplifier O1 output end connecting triode F1 are connected, the resistance R62 other end connects resistance R6 and resistance
R64, resistance R64 ground connection；AVDD module is connected after the pole the D connection resistance R68 of triode F1, the pole S of triode F1 connects resistance
R53 and resistance R65；It is grounded after resistance R65 connection resistance R66, resistance R65 connection operational amplifier O2 noninverting input, operation
The pole S of amplifier O2 reverse input end connecting triode F2 and resistance R67；Resistance R67 other end ground connection, operational amplifier O2 are defeated
The pole D of the pole G of outlet connecting triode F2, triode F2 connects warning device (22).
4. a kind of transformer transmission line malfunction monitoring device according to claim 3, which is characterized in that operational amplifier
O1, O2 are rail-to-rail operational amplifier, and AVDD module provides electric energy for operational amplifier O1, O2.
5. transformer transmission line malfunction monitoring device according to claim 2, which is characterized in that voltage regulator circuit 1 uses
LM2596 voltage-dropping type integrated circuit.
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| CN201821241022.7U CN208860913U (en) | 2018-08-02 | 2018-08-02 | A kind of transformer transmission line malfunction monitoring device |
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| CN201821241022.7U CN208860913U (en) | 2018-08-02 | 2018-08-02 | A kind of transformer transmission line malfunction monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601376A (en) * | 2019-09-11 | 2019-12-20 | 国网陕西省电力公司咸阳供电公司 | High-voltage isolating switch closing in-place monitoring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601376A (en) * | 2019-09-11 | 2019-12-20 | 国网陕西省电力公司咸阳供电公司 | High-voltage isolating switch closing in-place monitoring device and method |
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