CN110164671A - Distribution transformer and its monitoring device - Google Patents
Distribution transformer and its monitoring device Download PDFInfo
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- CN110164671A CN110164671A CN201910565852.8A CN201910565852A CN110164671A CN 110164671 A CN110164671 A CN 110164671A CN 201910565852 A CN201910565852 A CN 201910565852A CN 110164671 A CN110164671 A CN 110164671A
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- fuel tank
- monitoring
- pressure
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 57
- 239000002828 fuel tank Substances 0.000 claims abstract description 68
- 238000004804 winding Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 36
- 238000012544 monitoring process Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention provides a kind of distribution transformer and its monitoring devices, are related to controller switching equipment technical field, and the body of distribution transformer is arranged in fuel tank, and multiple shunting taps are arranged in the high-pressure side winding of transformer；Electronic off circuit tap changer and the electric load switch that monitoring device includes monitoring device, is arranged in fuel tank, electronic off circuit tap changer and electric load switch are connect with monitoring device respectively；Electronic off circuit tap changer with multiple shunting taps of high-pressure side winding for connecting respectively；Electric load switch is used to control the on high-tension side circuit on-off of the transformer；Monitoring device is used to control the closing or opening of electric load switch；And it in the case where electric load switch disconnects, controls electronic off circuit tap changer and connects different shunting taps.The present invention can with On-line Control transformer point/close a floodgate and voltage adjust, improve the working efficiency of staff.
Description
Technical field
The present invention relates to controller switching equipment technical fields, more particularly, to a kind of distribution transformer and its monitoring device.
Background technique
Distribution transformer is the significant components of electric substation, and oil immersion-type distribution transformer is widely used.Oil immersion-type distribution
Transformer is mainly made of iron core, winding, fuel tank, conservator, insulating sleeve, tap switch and gas relay etc., transformer
Body (winding and iron core) is incorporated into the fuel tank full of transformer oil, and the fuel tank of medium and small transformer is usually by box shell and case
Lid composition, the body of transformer are placed in box shell.
Currently, be directed to non-excitation pressure adjustment oil immersion-type distribution transformer, when needing to adjust the voltage of low-pressure side, first into
Row power-off, operates manual tap switch then to change the number of turns of high-pressure side winding, the operation is more complicated, so that staff
Working efficiency it is lower.
Summary of the invention
The purpose of the present invention is to provide distribution transformer and its monitoring devices, are matched with alleviating the oil immersed type of non-excitation pressure adjustment
Piezoelectric transformer usually requires the number of turns for manually changing high-pressure side winding in the event of a power failure to adjust the voltage of low-pressure side, makes
Obtain the lower technical problem of the working efficiency of staff.
The body of a kind of distributing transformer monitoring equipment provided by the invention, the distribution transformer is arranged in fuel tank,
Multiple shunting taps are arranged in the high-pressure side winding of the distribution transformer；The monitoring device includes monitoring device, is arranged in institute
State electronic off circuit tap changer and the electric load switch in fuel tank, the electronic off circuit tap changer and described electronic negative
Lotus switch is connect with the monitoring device respectively；
The electronic off circuit tap changer, for being connect respectively with multiple shunting taps of the high-pressure side winding；
The electric load switch, for controlling the on high-tension side circuit on-off of the distribution transformer；
The monitoring device, for controlling the closing or opening of the electric load switch；And in the electronic load
In the case that switch disconnects, controls the electronic off circuit tap changer and connect the different shunting taps.
Further, transformer detection device and fuel tank detection device are additionally provided in the fuel tank；The transformer inspection
It surveys device and the fuel tank detection device is connect with the monitoring device respectively；
The transformer detection device is used to detect the electric parameter of the distribution transformer, and sends out to the monitoring device
Send the electric parameter；
The fuel tank detection device is used to detect the environmental information in the fuel tank, and to described in monitoring device transmission
Environmental information.
Further, the transformer detection device includes:
High voltage side current mutual inductor, for detecting high voltage side current；
Low-pressure side current transformer, for detecting low-pressure side electric current；
Low voltage acquires cable, for acquiring low-pressure side voltage.
Further, the fuel tank detection device includes:
Pressure sensor, for detecting the pressure in the fuel tank；
Temperature sensor, for detecting the temperature in the fuel tank；
Low oil level/pressure discharges comprehensive sensor, for detecting low oil level/pressure release signal.
Further, further includes:
Driving device is connect with the electronic off circuit tap changer and the monitoring device respectively, in the prison
Surveying under the control of device drives the electronic off circuit tap changer to connect the different shunting taps.
Further, the high-pressure side of the distribution transformer is provided with high pressure three-phase casing, the electric load switch
One end and the high pressure three-phase casing connection, the other end are connect with the high voltage side current mutual inductor.
Further, the monitoring device includes:
Access port is sensed, for connecting with the fuel tank detection device；
Voltage and current access port, for being connect with the transformer detection device；
Pressure regulation access port, for being connect with the electronic off circuit tap changer and the electric load switch.
Further, the monitoring device further include:
Communication interface is used to send monitoring data to external equipment, and when the monitoring data occur abnormal to institute
It states external equipment and sends alarm signal.
Further, the first threaded base, the second threaded base and third spiral shell are provided on the inside of the fuel tank cap of the fuel tank
Line pedestal；
The low oil level/pressure release comprehensive sensor is installed in first threaded base；
The pressure sensor is installed in second threaded base；
The temperature sensor is installed in the third threaded base.
A kind of distribution transformer provided by the invention, including distributing transformer monitoring equipment as described above.
The present invention provides a kind of distribution transformer and its monitoring device, the body of distribution transformer is arranged in fuel tank,
Multiple shunting taps are arranged in the high-pressure side winding of distribution transformer；The electricity that monitoring device includes monitoring device, is arranged in fuel tank
Dynamic off circuit tap changer and electric load switch, electronic off circuit tap changer and electric load switch respectively with monitoring device
Connection；Electronic off circuit tap changer with multiple shunting taps of high-pressure side winding for connecting respectively；Electric load switch is used
In the on high-tension side circuit on-off for controlling the transformer；Monitoring device is used to control the closing or opening of electric load switch；
And it in the case where electric load switch disconnects, controls electronic off circuit tap changer and connects different shunting taps.In height
In the case where pressing side power-off, by adjusting the shunting tap for the high-pressure side winding that high-pressure side is connected, change high-pressure side winding turns
Number, to realize that voltage is adjusted.Therefore, can with On-line Control transformer point/close a floodgate and voltage adjust, improve staff
Working efficiency.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of distributing transformer monitoring equipment provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of another distributing transformer monitoring equipment provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of distribution transformer provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of another distribution transformer provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of another distribution transformer provided in an embodiment of the present invention.
Icon: 1- fuel tank；2- body；The electronic off circuit tap changer of 3-；4- electric load switch；5- monitoring device；6-
Fuel tank detection device；61- temperature sensor；62- pressure sensor；63- low oil level/pressure discharges comprehensive sensor；7- transformation
Device detection device；71- high voltage side current mutual inductor；72- low-pressure side current transformer；73- low voltage acquires cable；8- fuel tank
Special-shaped protrusion；9- bushing.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Currently, be directed to non-excitation pressure adjustment oil immersion-type distribution transformer, when needing to adjust the voltage of low-pressure side, first into
Row power-off, operates manual tap switch then to change the number of turns of high-pressure side winding, the operation is more complicated, so that staff
Working efficiency it is lower.Based on this, a kind of distribution transformer provided in an embodiment of the present invention and its monitoring device can be in line traffic controls
Transformer processed point/close a floodgate and voltage adjust, improve the working efficiency of staff.
For convenient for understanding the present embodiment, below to a kind of distributing transformer monitoring disclosed in the embodiment of the present invention
Equipment describes in detail.The distributing transformer monitoring equipment can be widely applied to become platform, pre-mounted box type transformer substation, group on column
The scenes such as box-like box-type substation and power distribution room.
Shown in referring to Fig.1, the body 2 of the distribution transformer of the embodiment of the present invention is arranged in fuel tank 1, distribution transformer
High-pressure side winding is arranged multiple shunting taps, and distributing transformer monitoring equipment includes monitoring device 5, the electricity that is arranged in fuel tank 1
Dynamic off circuit tap changer 3 and electric load switch 4, electronic off circuit tap changer 3 and electric load switch 4 respectively with monitoring
Device 5 connects.
Electronic off circuit tap changer 3 can be applied to three-phase oil immersion distribution transformer, under the conditions of no excitation, by with
The different shunting tap connections of high-pressure side winding, thus it is possible to vary distribution transformer high-pressure side winding (i.e. primary coil) the number of turns,
To achieve the purpose that adjust low-pressure side voltage (i.e. secondary voltage).
The setting of electronic off circuit tap changer 3 of the present embodiment at high-pressure side (i.e. primary side), for respectively with high-pressure side
Multiple shunting taps of winding connect；Specifically, electronic off circuit tap changer 3 is mounted at fuel tank cap, as shown in Figure 3.Electricity
The switch contact of dynamic off circuit tap changer 3 can be connect with each shunting tap of high-pressure side winding.
It further include driving device in a kind of enforceable mode, which opens with electronic no excitation tap respectively
3 and the connection of monitoring device 5 are closed, for driving electronic off circuit tap changer 3 to connect different points under the control of monitoring device 5
Connect tap.Specifically, the driving device may be disposed in fuel tank 1, can also be placed in outside fuel tank 1；Motor-operating mechanism can be used,
Permanent magnet mechanism can be used.
Electric load switch 4, for controlling the on high-tension side circuit on-off of distribution transformer；Specifically, can be using electricity
Dynamic two station load switchs are mounted on the fuel tank abnormal shape protrusion for being exclusively used in installation on-load switch as shown in Figure 3 and Figure 4
8, it can be arranged up and down towards on high-tension side side wall, contact, be convenient for wiring.Specifically, the high-pressure side of distribution transformer is provided with
Bushing 9,4 one end of electric load switch can be connect with bushing 9, and the other end can be connect with body 2.
Monitoring device 5, for controlling the closing or opening of electric load switch 4；And disconnected in electric load switch 4
In the case of, it controls electronic off circuit tap changer 3 and connects different shunting taps.
In the present embodiment, for the environment in the electric parameter and fuel tank 1 of real-time monitoring distribution transformer, in fuel tank 1
It is additionally provided with transformer detection device 7 and fuel tank detection device 6；Transformer detection device 7 and fuel tank detection device 6 respectively with prison
Device 5 is surveyed to connect；
Transformer detection device 7 is used to detect the electric parameter of distribution transformer, and sends electrical ginseng to monitoring device 5
Number；Fuel tank detection device 6 is used to detect the environmental information in fuel tank 1, and sends environmental information to monitoring device 5.
Specifically, the electric parameter of distribution transformer generally includes high voltage side current, low-pressure side electric current and low-pressure side voltage
Deng as shown in Fig. 2, the transformer detection device 7 of the present embodiment may include:
High voltage side current mutual inductor 71, for detecting high voltage side current；It can be soaked using multiple circle structure, A class B insulation
Enter and is run in the oil in fuel tank 1；In practical applications, as shown in figure 5, high voltage side current mutual inductor 71 includes A phase CT
(Current transforme, current transformer), B phase CT and C phase CT, can be fixed in distribution transformer high-pressure side respectively
Folder on, their primary side inlet wire is connected with the lower end contact of electric load switch 4, the body of outlet and distribution transformer
First head is connected；Secondary side leads to the connecting terminal that fuel tank 1 covers using leader cable, and outgoing cable is connected to prison to connecting terminal again
Survey device 5.In addition, bushing 9 includes A phase bushing, B phase bushing and C phase bushing, electric load switch 4
Upper end contact connect respectively with A phase bushing, B phase bushing and C phase bushing.
Low-pressure side current transformer 72, for detecting low-pressure side electric current；A class B insulation punching structure can be specifically used,
It is arranged in fuel tank, such as is mounted on low pressure winding and lifts one's head place, is run in the oil that can be immersed in fuel tank 1, pass through secondary side lead
Cable connection is to monitoring device 5；It may be indoor epoxy resin punching structure, be arranged outside fuel tank, such as be installed on low
At the outlet copper bar for pressing the low-voltage comprehensive distribution box of side, monitoring device 5 is connected to by secondary side leader cable.
Low voltage acquisition cable 73 can be set in fuel tank, for acquiring low-pressure side voltage for example, out of fuel tank 1
Low-tension bushing at lead be connected to monitoring device 5；Also it can be set outside fuel tank, for example, from the low pressure of step down side
The outlet copper bar of comprehensive distribution box punches, and is connected to monitoring device 5 using the leader cable with wiring nose.Monitoring device 5 connects
The above-mentioned electric parameter that transformer detection device 7 is sent is received, to realize on-line monitoring.
Environmental information in fuel tank 1 can be temperature, pressure, low oil level state or stress-released condition etc., the present embodiment
Fuel tank detection device 6 may include: pressure sensor 62, for detecting the pressure in fuel tank 1, for example, using model
The pressure sensor of BP800 or BP801；Temperature sensor 61 can specifically use pt100 for detecting the temperature in fuel tank 1
Temperature sensor；Low oil level/pressure release comprehensive sensor 63 can specifically be adopted for detecting low oil level/pressure release signal
Low oil level signal is detected with oil float minor structure, and oil is worked as in practical applications using spring structure detection pressure release signal
It when pressure is excessive in case 1, needs to carry out pressure release, can detecte pressure release signal at this time, pressure is excessive in fuel tank 1 can
It can be shown that distribution transformer operation irregularity.
Monitoring device 5 receives the above-mentioned environmental information that fuel tank detection device 6 is sent, to monitor the temperature in fuel tank 1 on-line
Degree, pressure, low oil level state or stress-released condition etc., can also be when environmental information occurs abnormal and alarm, such as temperature
Degree is not within the scope of set temperature or pressure is not in setting pressure limit etc..In specific implementation, the fuel tank cap of fuel tank 1
Inside is provided with the first threaded base, the second threaded base and third threaded base；Low oil level/pressure is installed in the first threaded base
Power discharges comprehensive sensor 63；Pressure sensor 62 is installed in second threaded base；Temperature sensing is installed in third threaded base
Device 61.Also, gasket can be set in the first threaded base, the second threaded base and third threaded base, when corresponding
When sensor screws in, leakproofness can be improved.
In the present embodiment, monitoring device 5 includes: sensing access port, for connecting with fuel tank detection device 6；Voltage and current
Access port, for being connect with transformer detection device 7；Pressure regulation access port, for electronic off circuit tap changer 3 and electronic negative
Lotus switch 4 connects.
Sensing access port, voltage and current access port and voltage and current access port are connect with the processor of monitoring device 5, are located
The data that reason device can receive fuel tank detection device 6, transformer detection device 7 is sent, and control instruction is sent to electronic
Off circuit tap changer 3 or electric load switch 4, the processing implement body can use single-chip microcontroller.
In addition, monitoring device 5 further include: communication interface is connect with processor, for sending monitoring number to external equipment
According to, and when monitoring data occur abnormal to external equipment transmission alarm signal, which can specifically use RS-
485。
Specifically, the shell of monitoring device 5 can use the cuboid box structure without bottom cover, sensing is reserved at top cover and is connect
Entrance, voltage and current access port, voltage and current access port and communication interface, above-mentioned each access port and communication interface can use
Circular hole and Ge Lan cooperate, and realize IP65 degree of protection.Housing back wall uses Guide Rail Design, installs convenient for construction personnel's fast accurate
It replaces, remove pluggable processor.Terminal block is set at top cover lower end, after each access port accesses cable, according to cable marker
It is crimped with corresponding terminal.Terminal block bottom setting installation interface, installation interface have self-locking after installation, and when dismounting is automatic
The function of flicking, it is ensured that safe and stable operation, and it is easily installed replacement.Meanwhile telescopic rod also can be used in operation maintenance personnel, on ground
Face electrification dismounting, installation and replacement.
A kind of distribution transformer provided in an embodiment of the present invention, including distributing transformer monitoring equipment as above.
The embodiment of the invention provides a kind of distribution transformer and its monitoring device, transformer is arranged in fuel tank, transformation
The high-pressure side winding of device is arranged multiple shunting taps, and monitoring device includes monitoring device, the electronic no excitation that is arranged in fuel tank
Tap switch and electric load switch, electronic off circuit tap changer and electric load switch are connect with monitoring device respectively；Electricity
Dynamic off circuit tap changer with multiple shunting taps of high-pressure side winding for connecting respectively；Monitoring device is electronic negative for controlling
The closing or opening of lotus switch；And in the case where electric load switch disconnects, electronic off circuit tap changer connection is controlled
Different shunting taps.Can with On-line Control transformer point/close a floodgate and voltage adjust, improve staff work effect
Rate.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In several embodiments provided herein, it should be understood that disclosed device, it can be by others side
Formula is realized.The apparatus embodiments described above are merely exemplary, for example, the division of unit, only a kind of logic function
It can divide, there may be another division manner in actual implementation, in another example, multiple units or components can combine or can collect
At another system is arrived, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling
Conjunction or direct-coupling or communication connection can be the indirect coupling or communication connection by some communication interfaces, device or unit,
It can be electrical property, mechanical or other forms.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of distributing transformer monitoring equipment, which is characterized in that the body of the distribution transformer is arranged in fuel tank, described
Multiple shunting taps are arranged in the high-pressure side winding of distribution transformer；The monitoring device includes monitoring device, is arranged in the oil
Electronic off circuit tap changer and electric load switch in case, the electronic off circuit tap changer and the electronic load are opened
Pass is connect with the monitoring device respectively；
The electronic off circuit tap changer, for being connect respectively with multiple shunting taps of the high-pressure side winding；
The electric load switch, for controlling the on high-tension side circuit on-off of the distribution transformer；
The monitoring device, for controlling the closing or opening of the electric load switch；And in the electric load switch
In the case where disconnection, controls the electronic off circuit tap changer and connect the different shunting taps.
2. distributing transformer monitoring equipment according to claim 1, which is characterized in that be additionally provided with transformation in the fuel tank
Device detection device and fuel tank detection device；The transformer detection device and the fuel tank detection device are filled with the monitoring respectively
Set connection；
The transformer detection device is used to detect the electric parameter of the distribution transformer, and sends institute to the monitoring device
State electric parameter；
The fuel tank detection device is used to detect the environmental information in the fuel tank, and sends the environment to the monitoring device
Information.
3. distributing transformer monitoring equipment according to claim 2, which is characterized in that the transformer detection device packet
It includes:
High voltage side current mutual inductor, for detecting high voltage side current；
Low-pressure side current transformer, for detecting low-pressure side electric current；
Low voltage acquires cable, for acquiring low-pressure side voltage.
4. distributing transformer monitoring equipment according to claim 2, which is characterized in that the fuel tank detection device includes:
Pressure sensor, for detecting the pressure in the fuel tank；
Temperature sensor, for detecting the temperature in the fuel tank；
Low oil level/pressure discharges comprehensive sensor, for detecting low oil level/pressure release signal.
5. distributing transformer monitoring equipment according to claim 1, which is characterized in that further include:
Driving device is connect with the electronic off circuit tap changer and the monitoring device respectively, for filling in the monitoring
The electronic off circuit tap changer is driven to connect the different shunting taps under the control set.
6. distributing transformer monitoring equipment according to claim 3, which is characterized in that the high-pressure side of the distribution transformer
Be provided with high pressure three-phase casing, one end of the electric load switch and the high pressure three-phase casing connection, the other end with it is described
The connection of high voltage side current mutual inductor.
7. distributing transformer monitoring equipment according to claim 2, which is characterized in that the monitoring device includes:
Access port is sensed, for connecting with the fuel tank detection device；
Voltage and current access port, for being connect with the transformer detection device；
Pressure regulation access port, for being connect with the electronic off circuit tap changer and the electric load switch.
8. distributing transformer monitoring equipment according to claim 7, which is characterized in that the monitoring device further include:
Communication interface is used to send monitoring data to external equipment, and when the monitoring data occur abnormal to described outer
Portion's equipment sends alarm signal.
9. distributing transformer monitoring equipment according to claim 3, which is characterized in that set on the inside of the fuel tank cap of the fuel tank
It is equipped with the first threaded base, the second threaded base and third threaded base；
Low oil level/pressure is installed in first threaded base and discharges comprehensive sensor；
Pressure sensor is installed in second threaded base；
Mounting temperature sensor in the third threaded base.
10. a kind of distribution transformer, which is characterized in that including distributing transformer monitoring as described in any one of claim 1 to 9
Equipment.
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| CN111208374A (en) * | 2020-02-28 | 2020-05-29 | 中国电力科学研究院有限公司 | Device and method for injecting sinusoidal excitation signal into transformer winding |
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