CN208297631U - A kind of transformer winding fault state vibration monitoring device - Google Patents
A kind of transformer winding fault state vibration monitoring device Download PDFInfo
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- CN208297631U CN208297631U CN201820907958.2U CN201820907958U CN208297631U CN 208297631 U CN208297631 U CN 208297631U CN 201820907958 U CN201820907958 U CN 201820907958U CN 208297631 U CN208297631 U CN 208297631U
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Abstract
The utility model provides a kind of transformer winding fault state vibration monitoring device, comprising: data acquisition device, wherein acceleration transducer is installed on transformer-cabinet two sides outer wall using magnetic mode；Current transformer, voltage transformer, acceleration transducer output end are all made of shielded cable and are connected to data in situ processing equipment；Data in situ processing equipment is installed on beside transformer, and input terminal connects data acquisition device, and output end is connected to server with optical fiber；Server is installed in the electrical cubicle of Substation control room, and input terminal is connect with data in situ processing equipment with optical fiber, and output end connects monitor with network interface；Monitor is mounted in the electrical cubicle of Substation control room, the output end of server is connected to by network interface.The utility model can effectively monitor the real-time operating conditions of transformer, and it is periodically long to solve offline inspection means, can not real-time monitoring the drawbacks of, manual inspection cost can be reduced and improve transformer station high-voltage side bus safety.
Description
Technical field
The utility model relates to power transformers, and in particular, to a kind of transformer winding fault state vibration monitoring dress
It sets.
Background technique
Power transformer carries the weight of voltage transformation, electric energy distribution and transmission as electric system upstream key equipment
Task is wanted, is power system security, reliable, high-quality, economical operation important guarantee.Although the quality of production of transformer constantly mentions
Height, but since transformer longtime running, failure and accident can not avoid completely.
The failure of transformer is broadly divided into internal fault and external fault.External fault is oil tank of transformer, insulating sleeve
And its cooling equipment damage, fuel tank poor sealing lead to oil leak outside the various failures occurred on lead-out wire, including transformer, cover
Pipe fracture etc..And power transformer interior fault then mainly includes loosening, the deformation of transformer core and winding, winding and iron core mistake
Heat, insulation ag(e)ing, shelf depreciation etc..In numerous fault types, internal fault occurrence probability is higher and safety to transformer
Influence on system operation is big.It is counted according to international bulk power grid working group, in large-scale power transformer failure, 26.6% failure belongs to winding event
Barrier.And 53% in winding failure belongs to mechanical breakdown, 31% belongs to electric fault.
Carrying out effectively monitoring to the real-time status of power equipment to assess its operating status, discovery and discriminating device failure is
To the important evidence that power equipment is rationally overhauled, and guarantee the precondition that power equipment works normally for a long time, because
This has and its important practical engineering value.
Utility model content
For the defects in the prior art, the purpose of the utility model is to provide a kind of vibrations of transformer winding fault state
Monitoring device can effectively monitor the real-time operating conditions of transformer.
Purpose according to the present utility model provides a kind of transformer winding fault state vibration monitoring device, comprising:
Data acquisition device, including current transformer, voltage transformer, acceleration transducer, in which: the acceleration passes
Sensor is used to acquire the vibration signal of transformer winding, is installed on transformer-cabinet two sides outer wall side using magnetic mode；It is described
Acceleration transducer is respectively arranged in the corresponding cabinet two sides of three-phase windings of each transformer, and every side of the cabinet is corresponding
An acceleration transducer is respectively installed in top, the lower part of each phase winding, amounts to 12 acceleration transducers, all acceleration sensings
Device signal passes through shield cabled data transmission；The voltage transformer, current sensor are installed on substation, for synchronizing
Acquire three-phase current, the three-phase voltage signal of transformer；The current transformer, voltage transformer, acceleration transducer output
End is connected to data in situ processing equipment by shielded cable, and the signal of acquisition is output to the data in situ processing and is set
It is standby；
Data in situ processing equipment is mounted on the spot beside transformer, and input terminal connects the data acquisition device, defeated
Outlet is connected to server with optical fiber；Three-phase current that the data in situ processing equipment acquires the data acquisition device,
Three-phase voltage signal and vibration signal are transferred to server after being converted to digital quantity signal on the spot, while utilizing output end
The Phototube Coupling ability that optical fiber transmission line has, realization are isolated with the reliable of server；
Server is installed in the electrical cubicle of Substation control room, input terminal and the data in situ processing equipment with
Optical fiber connection, output end are connected to monitor with network interface；The server is for storing the data in situ processing equipment
Incoming three-phase current, three-phase voltage signal and vibration signal, while monitor is transmitted to by network, it is more than in the signal
Vibration alarming signal is generated when setting range；
Monitor is installed in the electrical cubicle of Substation control room, the output of the server is connected to network interface
End, and data displaying, alarm are carried out to voltage, electric current, vibration signal and vibration alarming signal from the server.
Preferably, the acceleration transducer uses the AC102-2C type acceleration transducer of CTC company.
Preferably, the voltage transformer include two winding, that is, first windings, secondary windings, two windings be incorporated into or
Be wound on iron core, have insulating layer between two windings and between winding and iron core, make between two windings and winding with
There is electrical isolation between iron core.
Preferably, the data in situ processing equipment includes: electric distribution cabinet and is set to opening in the electric distribution cabinet
Powered-down source, dehumidifier, the first signal conditioner, in which: the Switching Power Supply is data in situ processing equipment power supply, described
Dehumidifier is set to the side inside the electric distribution cabinet, is supervised in real time by temperature built in the dehumidifier and humidity sensor
The temperature and humidity in the electric distribution cabinet is surveyed, automatic dehumidifying is completed, guarantees the running environment safety of the data in situ processing equipment；
The signal conditioner is set near the dehumidifier, three-phase current, three-phase for acquiring the data acquisition device
The analog signals of the vibration signal of voltage signal and 12 points are converted to digital signal, are then transmitted through the optical fiber to the clothes
Business device.
Preferably, the dehumidifier connects humidity sensor, and the humidity sensor connection is for showing current humidity shape
The display lamp of the different colours of state.
Preferably, the server includes: master controller and the second signal being set in same electrical cubicle conditioning
Device, the second signal conditioner are connected with optical fiber with the data in situ processing equipment, each second signal conditioner
It can be connect with multiple data in situ processing equipments, realize the monitoring of one master and multiple slaves；The master controller and described second
Signal conditioner is connected by optical fiber.
Preferably, the current transformer, voltage transformer, acceleration transducer are multiple, they are can be artificial
Adjust the sensor of setting and the reset of threshold value.
Compared with prior art, the utility model have it is following the utility model has the advantages that
The above-mentioned monitoring device of the utility model can effectively monitor the real-time operating conditions of transformer, solve offline
Detection means is periodically long, can not real-time monitoring the drawbacks of.
The monitoring data that the above-mentioned monitoring device of the utility model obtains can be used in effectively judging failure cause and failure
Breakdown judge is made to the transformer to break down in possibility position.
Transformer winding fault state vibration monitoring is carried out using the above-mentioned monitoring device of the utility model, can reduce people
Work routing inspection cost and raising transformer station high-voltage side bus safety.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon:
Fig. 1 is the structural block diagram of an embodiment of the present invention device；
Fig. 2 is the structural schematic diagram of an embodiment of the present invention device；
Fig. 3 is the electric distribution cabinet structural schematic diagram of data in situ processing equipment in one preferred embodiment of the utility model；
Fig. 4 is the Switching Power Supply wiring diagram of data in situ processing equipment in one preferred embodiment of the utility model；
Fig. 5 a, 5b are server electrical installation drawing in one preferred embodiment of the utility model；
Fig. 6 is data acquisition device and master controller connection figure in one preferred embodiment of the utility model；
In figure: data acquisition device 1, current transformer 101, voltage transformer 102, acceleration transducer 103, shielding electricity
Cable 104, data in situ processing equipment 2, electric distribution cabinet 201, Switching Power Supply 202, dehumidifier 203, the first signal conditioner 204,
Server 3, master controller 301, second signal conditioner 302, monitor 4.
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made.
These are all within the protection scope of the present invention.
Referring to Fig.1 described in -2, an implementation of transformer winding fault state vibration monitoring device provided by the utility model
Example structure chart, comprising:
Data acquisition device 1, including current transformer 101, voltage transformer 102, acceleration transducer 103, in which: institute
State acceleration transducer 103 and transformer-cabinet two sides outer wall be installed on using magnetic mode, cabinet just, back two sides, it is each to install
There are 6 acceleration transducers, each acceleration transducer is installed the top and lower part of the corresponding box location of three-phase windings respectively, adopted
The vibration signal of collection is carried out data transmission by shield cable；The current transformer 101, voltage transformer 102 are installed
In substation；The current transformer 101, voltage transformer 102 input terminal acquire the three-phase current of transformer, three-phase respectively
Voltage signal；The current transformer 101, voltage transformer 102, acceleration transducer 103 output end pass through shielding letter
Number cable connection is to data in situ processing equipment 2；
Data in situ processing equipment 2 is mounted on the spot beside transformer, and input terminal connects the data acquisition device,
Output end connects server 3, three-phase current, the three-phase that the data in situ processing equipment 2 acquires the data acquisition device
After voltage signal and vibration signal are converted to digital quantity signal on the spot, it is transmitted through the optical fiber to server 3；
Server 3 is installed in the electrical cubicle of Substation control room, input terminal and the data in situ processing equipment 2
It is connected with optical fiber, output end is connected to monitor 4 with network interface；The server is set for storing the data in situ processing
Standby incoming three-phase current, three-phase voltage signal and vibration signal, while monitor is transmitted to by network, it is super in the signal
Vibration alarming signal is generated when crossing setting range；
Monitor 4 is installed in the electrical cubicle of Substation control room, is connected to the defeated of the server 3 with network interface
Outlet carries out data displaying, alarm to voltage, electric current, vibration signal and vibration alarming signal from the server 3.
In the utility model section Example, the acceleration transducer 103 by mass block, damper, elastic element,
Sensing element composition.Acceleration transducer 103, by the measurement to inertia force suffered by mass block, utilizes ox in accelerator
The second law that pauses obtains acceleration value.When working normally and breaking down, vibration characteristics can change transformer, pass through
It installs acceleration transducer additional on transformer box wall, the tank wall acceleration information under transformer operating condition can be measured, come just with this
Step judges the working condition of transformer.In one embodiment, the acceleration transducer can be using CTC company
AC102-2C type acceleration transducer.Acceleration transducer 103 is placed on the outside of transformer box wall by magnetic mode, installation side
Just, and it is easy to disassemble and maintenance.
Current transformer is widely used in the monitoring of power equipment electric parameter, and current transformer is measured in electric system
The secondary devices such as instrument, relay protection obtain the sensor of electrical primary loop current information, and current transformer presses high current
Ratio is converted into low current, and current transformer is once flanked in primary system, secondary to flank measuring instrumentss, relay protection etc..Just
Often mutual inductor secondary side is near short circuit state when work, and output voltage is very low.In the present invention, pass through Current Mutual Inductance
Device 101 acquires current signal, intersect comparing with the collected acceleration signal of acceleration transducer 103, sentence as auxiliary
According to come judge transformer occur fault type.
Voltage transformer 102 is identical as current transformer 103 and electric system electric parameter on-line monitoring in it is very heavy
The electric device wanted.The basic structure and transformer of voltage transformer are much like, it also there are two winding, one cry once around
Group, one is secondary winding, and two windings are incorporated into or are wound on iron core, between two windings and between winding and iron core all
There is insulation, makes have electrical isolation between two windings and between winding and iron core.Voltage transformer 102 at runtime, one
Secondary winding parallel connects on the line, and secondary winding simultaneously couples instrument or relay.In the present invention, voltage transformer 102
Collected voltage signal is also as judging that the assistant criteria of transformer fault type intersects ratio with acceleration signal, current signal
To using.
Referring to shown in Fig. 3, the data in situ processing equipment 2 includes: electric distribution cabinet 201 and is set to the electric box
Switching Power Supply 202, dehumidifier 203, the first signal conditioner 204 in cabinet, in which: the Switching Power Supply 202 is the data
On-site processing equipment 2 is powered, and the dehumidifier 203 is set to the side inside the electric distribution cabinet 201, the first signal tune
Reason device 204 is set near the dehumidifier 203.Electric distribution cabinet 201 uses stainless steel cabinet.Data in situ processing equipment 2 is pacified
By control outdoor transformer, the design of stainless steel electrical cabinet meets anti-condensation, high temperature resistant, the protection working condition requirement such as ventilation.
Alternating current air switch Q1, current terminal X1, ground terminal PE are also shown in Fig. 3, referring to shown in Fig. 4, switch electricity
Source 202 is the circuit diagram of the connections such as U1, dehumidifier 203 i.e. CSQ.The dehumidifier connects humidity sensor, the humidity sensor
Humidity in device real-time monitoring electric distribution cabinet, and by the display lamp of connection, be converted to visual red, yellow, black three kinds of colors
Light, prompt humidity level, when 201 interior humidity of electric distribution cabinet is more than setting value, the dehumidifier is switched on work, guarantees
Electric box cabinet humidity meets electric components operating condition.
Switching Power Supply U1 shown in figure is the power supply of data in situ processing equipment using 220VAC/24VDC, takes electricity
220VAC is derived from the electrical cabinet of transformer in-situ side.Switching Power Supply is for the power supply to data treatment in situ unit.
First signal conditioner 204 can be realized using existing device, for example be made of embedded module and FPGA device
Deng main function is to receive the analog signal of each sensor on the spot, and is converted into digital signal, finally uploads it to clothes
Business device avoids the distortion and inaccuracy due to causing signal when long distance transmission so as to handle signal in time.
As shown in Fig. 5 a, 5b, the server 3 include: master controller 301 and be set in same electrical cubicle
Binary signal conditioner 302, the second signal conditioner 302 are connect with the data in situ processing equipment 2 by optical fiber, are received
Voltage, electric current, the vibration signal that the data in situ processing equipment 2 is sent, the master controller 301 and second signal tune
It manages device 302 to connect by optical fiber, and obtained whole voltages, electric current, vibration signal is stored etc., be more than setting in data
It (is abnormal) when range, the master controller can generate vibration alarming signal.
As shown in fig. 6, master controller 301 uses industrial computer, it is the core component of a whole set of transformer online monitoring,
In figure, second signal conditioner 302 receives the sensor letter uploaded in multiple data in situ processing equipments 2 by armored fiber optic
Number, and whole voltages, electric current, vibration signal are uploaded into master controller 301 by cabinet inner fiber.
Further, if the utility model is used as smart machine, can also be arranged by the master controller 301
The vibration received, voltage, current signal are analyzed and are compared by corresponding analytic function, by running algorithm, by vibrating
Signal tentatively judge transformer whether failure, be fitted current and voltage signals thereafter and judge the fault type of transformer, as auxiliary
Criterion judges transformer fault state, when reaching given threshold, triggers the paper record to all data, carries out that shelves is stayed to protect
It deposits.Certainly, it is not belonging to the emphasis of the utility model herein, the utility model focuses on providing the hardware of a monitoring device
Structure.
Monitor 4 can be apparent from real-time electric parameter number by visualization interface using components such as computers
The electric parameter type understood needed for value variation and independently switching, the transformer event of anomalous variation and the data analysis of electric parameter
Barrier can all be prompted, such as in the form of bright-colored, prompt etc..
The above-mentioned monitoring device of the utility model can effectively monitor the real-time operating conditions of transformer, solve offline
Detection means is periodically long, can not real-time monitoring the drawbacks of, can reduce manual inspection cost and improve transformer station high-voltage side bus safety
Property.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims,
This has no effect on the substantive content of the utility model.
Claims (7)
1. a kind of transformer winding fault state vibration monitoring device characterized by comprising
Data acquisition device, including current transformer, voltage transformer, acceleration transducer, in which: the acceleration transducer
For acquiring the vibration signal of transformer winding, transformer-cabinet two sides outer wall side is installed on using magnetic mode；The acceleration
Degree sensor is respectively arranged in the corresponding cabinet two sides of three-phase windings of each transformer, and every side of the cabinet corresponds to each phase
An acceleration transducer is respectively installed in top, the lower part of winding, amounts to 12 acceleration transducers, all acceleration transducer letters
Number pass through shield cabled data transmission；The voltage transformer, current sensor are installed on substation, are used for synchronous acquisition
Three-phase current, the three-phase voltage signal of transformer；The current transformer, voltage transformer, acceleration transducer output end are equal
It is connected to data in situ processing equipment by shielded cable, the signal of acquisition is output to the data in situ processing equipment；
Data in situ processing equipment is mounted on the spot beside transformer, and input terminal connects the data acquisition device, output end
Server is connected to optical fiber；Three-phase current, the three-phase that the data in situ processing equipment acquires the data acquisition device
Voltage signal and vibration signal are transferred to server after being converted to digital quantity signal on the spot, while utilizing the optical fiber of output end
The Phototube Coupling ability that transmission line has, realization are isolated with the reliable of server；
Server is installed in the electrical cubicle of Substation control room, and input terminal and the data in situ processing equipment are with optical fiber
Connection, output end are connected to monitor with network interface；The server is incoming for storing the data in situ processing equipment
Three-phase current, three-phase voltage signal and vibration signal, while monitor is transmitted to by network, is more than setting in the signal
Vibration alarming signal is generated when range；
Monitor is installed in the electrical cubicle of Substation control room, and the output end of the server is connected to network interface, and
Data displaying, alarm are carried out to voltage, electric current, vibration signal and vibration alarming signal from the server.
2. transformer winding fault state vibration monitoring device according to claim 1, which is characterized in that the acceleration
Sensor uses the AC102-2C type acceleration transducer of CTC company.
3. transformer winding fault state vibration monitoring device according to claim 1, which is characterized in that the voltage is mutual
Sensor includes two winding, that is, first windings, secondary windings, and two windings are incorporated into or are wound on iron core, between two windings with
And have insulating layer between winding and iron core, make have electrical isolation between two windings and between winding and iron core.
4. transformer winding fault state vibration monitoring device according to claim 1, which is characterized in that the data are just
Ground processing equipment includes: electric distribution cabinet and the Switching Power Supply being set in the electric distribution cabinet, dehumidifier, the first signal condition
Device, in which: the Switching Power Supply is data in situ processing equipment power supply, and the dehumidifier is set in the electric distribution cabinet
The side in portion, by the temperature and humidity in electric distribution cabinet described in the temperature and humidity sensor real-time monitoring built in the dehumidifier,
Complete automatic dehumidifying；The signal conditioner is set near the dehumidifier, for acquire the data acquisition device
The analog signals of the vibration signal of three-phase current, three-phase voltage signal and 12 points are converted to digital signal, then through light
Fibre is transferred to the server.
5. transformer winding fault state vibration monitoring device according to claim 4, which is characterized in that the dehumidifier
Humidity sensor is connected, the humidity sensor connects the display lamp for showing the different colours of current humidity state.
6. transformer winding fault state vibration monitoring device according to claim 1-5, which is characterized in that institute
Stating server includes: master controller and the second signal conditioner being set in same electrical cubicle, the second signal tune
Reason device is connected with optical fiber with the data in situ processing equipment, and each second signal conditioner can be with multiple data
On-site processing equipment connection, realizes the monitoring of one master and multiple slaves；The master controller and the second signal conditioner pass through optical fiber
Connection.
7. transformer winding fault state vibration monitoring device according to claim 1-5, which is characterized in that institute
State current transformer, voltage transformer, acceleration transducer be it is multiple, they are that can manually adjust the setting of threshold value and multiple
The sensor of position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820907958.2U CN208297631U (en) | 2018-06-12 | 2018-06-12 | A kind of transformer winding fault state vibration monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820907958.2U CN208297631U (en) | 2018-06-12 | 2018-06-12 | A kind of transformer winding fault state vibration monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN208297631U true CN208297631U (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820907958.2U Active CN208297631U (en) | 2018-06-12 | 2018-06-12 | A kind of transformer winding fault state vibration monitoring device |
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| CN (1) | CN208297631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325249A (en) * | 2021-04-17 | 2021-08-31 | 国网山东省电力公司淄博供电公司 | Box transformer state evaluation device |
-
2018
- 2018-06-12 CN CN201820907958.2U patent/CN208297631U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325249A (en) * | 2021-04-17 | 2021-08-31 | 国网山东省电力公司淄博供电公司 | Box transformer state evaluation device |
| CN113325249B (en) * | 2021-04-17 | 2023-09-29 | 国网山东省电力公司淄博供电公司 | State evaluation device for box transformer |
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