CN208654256U - A kind of Reactor Fault on-Line Monitor Device - Google Patents
A kind of Reactor Fault on-Line Monitor Device Download PDFInfo
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- CN208654256U CN208654256U CN201821188350.5U CN201821188350U CN208654256U CN 208654256 U CN208654256 U CN 208654256U CN 201821188350 U CN201821188350 U CN 201821188350U CN 208654256 U CN208654256 U CN 208654256U
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Abstract
The utility model discloses a kind of Reactor Fault on-Line Monitor Devices, comprising: dynamic signal acquisition circuit, temperature signal collection circuit and data acquisition processing circuit.Reactor Fault on-Line Monitor Device provided by the embodiment of the utility model, the differential wave of reactor can be acquired by current transformer not only to judge whether reactor breaks down, the temperature signal of reactor can also be acquired by infrared temperature sensor to judge whether reactor breaks down, the state that reactor has been monitored from many aspects has ensured that reactor failure can be replaced in time.In addition, the electric current in reactor winding mutually balances counteracting when normal, differential current value is directly measured in failure, has very high noise to inhibit ratio.
Description
Technical field
The utility model relates to reactor monitoring technical field, in particular to a kind of Reactor Fault on-Line Monitor Device.
Background technique
Reactor is a kind of power system device, is mainly used for limiting short-circuit current, reactive compensation etc..General series reactance
Device is used in capacitor group, for the inrush phenomenon and switching overvoltage of suppression capacitor group.People are a large amount of energy at present
With in the protection of capacitor, and reactor is ignored, when reactor breaks down, whole group capacitor must cut off progress
Maintenance, and when Reactor Fault is serious, burning for package unit can be caused, suffered heavy losses, need to pay biggish manpower
Material resources affect power system device normal operation, these are not made by discovery in time since reactor is abnormal
At.Come effectively to monitor the reactor course of work therefore, it is necessary to a kind of Reactor Fault monitoring device.
Utility model content
In order to solve problems in the prior art, the utility model embodiment provides a kind of Reactor Fault on-line monitoring dress
It sets.The technical solution is as follows:
The utility model embodiment provides a kind of Reactor Fault on-Line Monitor Device, comprising: differential wave acquisition electricity
Road, temperature signal collection circuit and data acquisition processing circuit,
The differential wave Acquisition Circuit includes: current transformer and ratio enlargement unit；
The ratio enlargement unit includes: the first adjustable resistance, the second adjustable resistance, first resistor, second resistance, third
Adjustable resistance, the 4th adjustable resistance, 3rd resistor, the first operational amplifier；One end and second of first adjustable resistance can
Adjust one end connection of resistance, the other end ground connection of the second adjustable resistance, one end of the second resistance and the first adjustable resistance
One end connection, the other end of second resistance are connect with the reverse input end of the first operational amplifier；The third adjustable resistance
One end is connect with one end of the 4th adjustable resistance, the other end of the 4th adjustable resistance ground connection, one end of the 3rd resistor and the
One end of three adjustable resistances connects, and the other end of 3rd resistor is connect with the reverse input end of the first operational amplifier；Described
One end of one resistance is connect with the other end of first resistor and 3rd resistor respectively, and the other end of first resistor is put with the first operation
The output end connection of big device, the noninverting input ground connection of the first operational amplifier；
It is cased with a current transformer in every confluence Lv Pai branch on reactor, distinguishes in all current transformers
By the secondary outgoing line polarity that two current transformers are two current transformers in one group, every group on the contrary, each group Current Mutual Inductance
Device is connect with a ratio enlargement unit respectively；The signal output end of a current transformer in every group of current transformer with it is right
The other end of the first adjustable resistance in ratio enlargement unit answered connects, the signal output end of another current transformer with it is right
The other end for the third adjustable resistance in ratio enlargement unit answered connects；
The temperature signal collection circuit includes: infrared temperature sensor, D/A converter, second operational amplifier, infrared
Temperature sensor is connected by D/A converter and the reverse input end of second operational amplifier, the forward direction of second operational amplifier
Input terminal accesses threshold signal, and the threshold signal is used to indicate the threshold value that reactor temperature to be measured rises；
The data acquisition processing circuit includes: or gate logic circuit, A/D converter and processor, and the first operation is put
Big device and the output end of second operational amplifier are connect with the input terminal of or gate logic circuit, the output end of or gate logic circuit
It is connect by A/D converter with processor.
In Reactor Fault on-Line Monitor Device provided in this embodiment, further includes: failure report connected to the processor
Alert device.
In Reactor Fault on-Line Monitor Device provided in this embodiment, the fault alarm is piezo, loudspeaking
At least one of device, flashing lamp.
In Reactor Fault on-Line Monitor Device provided in this embodiment, further includes: at failure connected to the processor
Platform.
Technical solution provided by the embodiment of the utility model has the benefit that
Reactor Fault on-Line Monitor Device provided by the embodiment of the utility model, not only can by current transformer come
The differential wave of reactor is acquired to judge whether reactor breaks down, reactance can also be acquired by infrared temperature sensor
The temperature signal of device judges whether reactor breaks down, and the state of reactor has been monitored from many aspects, has ensured reactance
Device failure can be replaced in time.In addition, the electric current in reactor winding mutually balances counteracting when normal, in failure
Differential current value is directly measured, has very high noise to inhibit ratio.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of Reactor Fault on-Line Monitor Device structural schematic diagram provided by the embodiment of the utility model；
Fig. 2 is that a kind of current transformer provided by the embodiment of the utility model is mounted in the confluence Lv Pai branch of reactor
Structural schematic diagram.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Embodiment one
The utility model embodiment provides a kind of Reactor Fault on-Line Monitor Device, referring to Fig. 1, the Reactor Fault
On-Line Monitor Device may include: differential wave Acquisition Circuit, temperature signal collection circuit and data acquisition processing circuit.
Differential wave Acquisition Circuit includes: current transformer and ratio enlargement unit；
Wherein, ratio enlargement unit includes: the first adjustable resistance R1, the second adjustable resistance R2, first resistor R3, second
Resistance R4, third adjustable resistance R5, the 4th adjustable resistance R6,3rd resistor R7, the first operational amplifier 11；First adjustable resistance
One end of R1 is connect with one end of the second adjustable resistance R2, the other end ground connection of the second adjustable resistance R2, the second resistance R4
One end connect with one end of the first adjustable resistance R1, the other end of second resistance R4 is reversed defeated with the first operational amplifier 11
Enter end connection；One end of the third adjustable resistance R5 is connect with one end of the 4th adjustable resistance R6, the 4th adjustable resistance R6's
Other end ground connection, one end of the 3rd resistor R7 are connect with one end of third adjustable resistance R5, the other end of 3rd resistor R7
It is connect with the reverse input end of the first operational amplifier 11；One end of the first resistor R3 respectively with first resistor R3 and third
The other end of resistance R7 connects, and the other end of first resistor R3 is connect with the output end of the first operational amplifier 11, the first operation
The noninverting input of amplifier 11 is grounded；
It is cased with a current transformer in every confluence Lv Pai branch on reactor, distinguishes in all current transformers
By the secondary outgoing line polarity that two current transformers are two current transformers in one group, every group on the contrary, each group Current Mutual Inductance
Device is connect with a ratio enlargement unit respectively；The signal output end of a current transformer in every group of current transformer with it is right
The other end of the first adjustable resistance R1 in the ratio enlargement unit answered connects, the signal output end of another current transformer with
The other end of third adjustable resistance R5 in corresponding ratio enlargement unit connects；
Temperature signal collection circuit includes: infrared temperature sensor 21, D/A converter 22, second operational amplifier 12, red
Outer temperature sensor 21 is connect by D/A converter 22 with the reverse input end of second operational amplifier 12, the second operation amplifier
The positive input of device 12 accesses threshold signal V10, and threshold signal V10 is used to indicate the threshold value that reactor temperature to be measured rises；
Data acquisition processing circuit includes: or gate logic circuit 31, A/D converter 32 and processor 33 (i.e. in Fig. 1
CPU), the output end of the first operational amplifier 11 and second operational amplifier 12 with the input terminal of or gate logic circuit 31 connect
It connects, the output end of or gate logic circuit 31 is connect by A/D converter 32 with processor 33.
Optionally, Reactor Fault on-Line Monitor Device can also include: fault alarm connected to the processor, failure
Alarm is at least one of piezo, loudspeaker, flashing lamp.
Optionally, Reactor Fault on-Line Monitor Device can also include: troubleshooting platform connected to the processor, use
In the fault condition of Real time displaying reactor.
In the present embodiment, the confluence Lv Pai branch on power reactor is generally four or more even number,
The present embodiment (wherein, four current transformer output signals point for four confluence Lv Pai branches 7 are set on power reactor
It is two groups, current transformer 1 and current transformer 2 are one group, and current transformer 3 and current transformer 4 are another group, in each group
Secondary outgoing line polarity on the contrary, being separately input to two sets of ratio enlargement units for this two groups), as shown in Figure 2.Reactor lead 5
The middle part of power reactor is set, and the inner end of four confluence Lv Pai branches 7 is connect with reactor lead 5, passes through the reactance
Electric current is assigned in four confluence Lv Pai branches 7 by device lead 5.It can be battery powered, it certainly can also be in confluence Lv Pai branch
In addition current transformer is added, its output voltage is rectified, filters to obtain power supply.The end of each winding 6 of reactor
Be connected to confluence Lv Pai branch 7 on, be separately installed in four confluence Lv Pai branches 7 current transformer (i.e. current transformer 1,
Current transformer 2, current transformer 3 and current transformer 4), for measure four confluence Lv Pai branch 7 on electric currents, make with
6 electric current of reactor winding that confluence Lv Pai branch 7 connects all flows through corresponding current transformer.Debugging first is needed before detection
Adjustable resistance R1 and the second adjustable resistance R2 and third adjustable resistance R5 and the 4th adjustable resistance R6 makes c point and d point in figure
Electric current it is identical, second resistance R4 is identical with the resistance value of 3rd resistor R7.Ratio enlargement unit is by semifixed resistor and the first operation
It puts amplifier and generates differential wave jointly.Two current transformers output in the without failure situation of reactor, in every group
The opposite current signal of size identical polar causes the first operation to put amplifier 11 and exports low level signal；And when reactor goes out
In the case that existing winding broken string or turn-to-turn insulation are discharged, then electric current is redistributed in four confluence Lv Pai branches 7, in every group
The opposite current signal of two current transformer output size opposed polarities, cause the first operation to put amplifier 11 and export high electricity
Ordinary mail number.
Meanwhile when reactor is without failure, infrared temperature sensor 21 collects reactor normal temperature, causes
Two operational amplifiers 12 export low level signal；In the case that there is winding broken string in reactor or turn-to-turn insulation is discharged, electricity
Anti- device temperature increases, and the collected temperature signal of infrared temperature sensor 21 also increases, until being more than threshold signal V10, causes
Second operational amplifier 12 exports high level signal.
When the first operational amplifier 11 or second operational amplifier 12 export high level signal, processor 33 can be connect
Troubleshooting signal is received, and then operating trouble alarm carries out fault alarm or the Real time displaying reactance in troubleshooting platform
The fault condition of device.
In the present embodiment, infrared temperature sensor 21 can be installed at the top or face coil of reactor winding,
The installation site of the present embodiment and unlimited infrared temperature sensor 21, the only detectable reactance of infrared temperature sensor 21 to be mounted
The temperature of device.Since infrared temperature sensor 21 is low-voltage equipment, and reactor winding is high-tension apparatus, therefore is installed
When, to make to maintain a certain distance between infrared temperature sensor 21 and reactor winding.
Reactor Fault on-Line Monitor Device provided by the embodiment of the utility model, not only can by current transformer come
The differential wave of reactor is acquired to judge whether reactor breaks down, reactance can also be acquired by infrared temperature sensor
The temperature signal of device judges whether reactor breaks down, and the state of reactor has been monitored from many aspects, has ensured reactance
Device failure can be replaced in time.In addition, the electric current in reactor winding mutually balances counteracting when normal, in failure
Differential current value is directly measured, has very high noise to inhibit ratio.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (4)
1. a kind of Reactor Fault on-Line Monitor Device characterized by comprising differential wave Acquisition Circuit, temperature signal are adopted
Collector and data acquisition processing circuit,
The differential wave Acquisition Circuit includes: current transformer and ratio enlargement unit；
The ratio enlargement unit includes: the first adjustable resistance (R1), the second adjustable resistance (R2), first resistor (R3), second
Resistance (R4), third adjustable resistance (R5), the 4th adjustable resistance (R6), 3rd resistor (R7), the first operational amplifier (11)；Institute
The one end for stating the first adjustable resistance (R1) is connect with one end of the second adjustable resistance (R2), the other end of the second adjustable resistance (R2)
Ground connection, one end of the second resistance (R4) are connect with one end of the first adjustable resistance (R1), the other end of second resistance (R4)
It is connect with the reverse input end of the first operational amplifier (11)；One end of the third adjustable resistance (R5) and the 4th adjustable resistance
(R6) one end connection, the other end ground connection of the 4th adjustable resistance (R6), one end of the 3rd resistor (R7) and third are adjustable
One end of resistance (R5) connects, and the other end of 3rd resistor (R7) is connect with the reverse input end of the first operational amplifier (11)；
One end of the first resistor (R3) is connect with the other end of first resistor (R3) and 3rd resistor (R7) respectively, first resistor
(R3) the other end is connect with the output end of the first operational amplifier (11), and the noninverting input of the first operational amplifier (11) connects
Ground；
It is cased with a current transformer in every confluence Lv Pai branch on reactor, presses two respectively in all current transformers
A current transformer is the secondary outgoing line polarity of two current transformers in one group, every group on the contrary, each group current transformer point
It is not connect with a ratio enlargement unit；The signal output end of a current transformer in every group of current transformer with it is corresponding
The other end of the first adjustable resistance (R1) in ratio enlargement unit connects, the signal output end of another current transformer with it is right
The other end of third adjustable resistance (R5) in the ratio enlargement unit answered connects；
The temperature signal collection circuit includes: infrared temperature sensor (21), D/A converter (22), second operational amplifier
(12), infrared temperature sensor is connected by D/A converter and the reverse input end of second operational amplifier, the second operation amplifier
The positive input of device accesses threshold signal (V10), and the threshold signal (V10) is used to indicate what reactor temperature to be measured rose
Threshold value；
The data acquisition processing circuit includes: or gate logic circuit (31), A/D converter (32) and processor (33), and
One operational amplifier (11) and the output end of second operational amplifier (12) are connect with the input terminal of or gate logic circuit (31),
The output end of or gate logic circuit (31) is connect by A/D converter (32) with processor (33).
2. Reactor Fault on-Line Monitor Device according to claim 1, which is characterized in that further include: connect with processor
The fault alarm connect.
3. Reactor Fault on-Line Monitor Device according to claim 2, which is characterized in that the fault alarm is bee
Ring at least one of piece, loudspeaker, flashing lamp.
4. Reactor Fault on-Line Monitor Device according to claim 1, which is characterized in that further include: connect with processor
The troubleshooting platform connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821188350.5U CN208654256U (en) | 2018-07-25 | 2018-07-25 | A kind of Reactor Fault on-Line Monitor Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821188350.5U CN208654256U (en) | 2018-07-25 | 2018-07-25 | A kind of Reactor Fault on-Line Monitor Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208654256U true CN208654256U (en) | 2019-03-26 |
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ID=65786177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821188350.5U Active CN208654256U (en) | 2018-07-25 | 2018-07-25 | A kind of Reactor Fault on-Line Monitor Device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208654256U (en) |
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2018
- 2018-07-25 CN CN201821188350.5U patent/CN208654256U/en active Active
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