CN207381813U - A kind of power transformer neutral ground rapid protecting device - Google Patents
A kind of power transformer neutral ground rapid protecting device Download PDFInfo
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- CN207381813U CN207381813U CN201721278002.2U CN201721278002U CN207381813U CN 207381813 U CN207381813 U CN 207381813U CN 201721278002 U CN201721278002 U CN 201721278002U CN 207381813 U CN207381813 U CN 207381813U
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- electric cabinet
- support column
- electric
- power transformer
- disconnecting switch
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- 230000007935 neutral effect Effects 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 239000002826 coolant Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a kind of power transformer neutral ground rapid protecting devices, including device body, the bottom of device body is respectively arranged with electric cabinet support column and pre-buried support column, the surface of electric cabinet support column is provided with electric cabinet, mounting platform is both provided at the top of electric cabinet support column and pre-buried support column, the one side of disconnecting switch is provided with arrester, the one side of arrester is provided with electric discharge mutual inductor, disconnecting switch is connected with arrester and electric discharge mutual inductor by electric wire with discharging gap, the one side of electric cabinet is provided with water cooling box, it is connected respectively by outlet pipe with return pipe between electric cabinet and water cooling box, outlet pipe is internally provided with water pump.Which solves existing power transformer neutral ground rapid protecting devices; since the work of electric cabinet workpiece sends substantial amounts of thermal energy, excessively high thermal energy can damage the work of electric cabinet internal workpiece, cause workpiece reaction slower; it even damages, the problem of causing quickly to be protected.
Description
Technical field
The utility model is related to field transformers, and in particular to dress is quickly protected in a kind of power transformer neutral ground
It puts.
Background technology
10kV, 220kV are the mains voltage grades of supply network, and since voltage is very high, neutral point is generally used and directly connect
Ground mode, since relay protection setting configures and prevents the requirement of communication interference etc., in order to limit single-phase short circuit current,
In have some transformers use isolated neutral mode.Under this method of operation, due to lightning stroke, single-phase grounding fault
Etc. can cause neutral point overvoltage, and transformer is graded insulation mostly, therefore overvoltage causes very the insulation of neutral point
It is big to threaten, it is necessary to protective device to be set to prevent accident it.In general, stick gap is severe non-uniform electric field, and electric discharge is electric
Unstable dispersiveness is pressed greatly so as to determine that its protective value is poor.Sphere gap is stablized for uniform electric field discharge voltage, and dispersiveness is small
Protective value is good.Sphere gap field adjustable is easier, and user can be according to oneself regional situation field adjustable；And stick gap pinnacle
Especially difficult alignment, so field adjustable difficulty is big.Sphere gap is using stainless steel ball electroplate, of high cost and fixation requirement
Height, so many producers use stick gap to reduce cost, but there is no consider using effect.But existing power transformer
Device neutral ground rapid protecting device, since the work of electric cabinet workpiece sends substantial amounts of thermal energy, excessively high thermal energy can damage electricity
The work of case internal workpiece is controlled, cause workpiece reaction slower or even is damaged, the problem of causing quickly to be protected.
Utility model content
The technical problems to be solved in the utility model is that the existing power transformer neutral ground overcome is quickly protected
Device, since the work of electric cabinet workpiece sends substantial amounts of thermal energy, excessively high thermal energy can damage the work of electric cabinet internal workpiece, lead
It causes workpiece reaction slower or even damages, the problem of causing quickly to be protected, a kind of power transformer neutral point is provided and is connect
Ground rapid protecting device.
In order to solve the above-mentioned technical problem, the utility model provides following technical solution：
The utility model provides a kind of power transformer neutral ground rapid protecting device, including device body, institute
The bottom for stating device body is respectively arranged with electric cabinet support column and pre-buried support column, the electric cabinet support column and described pre-buried
The bottom of support column is both provided with support pad, and the surface of the electric cabinet support column is provided with electric cabinet, the electric cabinet branch
Mounting platform is both provided at the top of dagger and the pre-buried support column, disconnecting switch is provided at the top of the mounting platform,
The one side of the disconnecting switch is provided with arrester, and the one side of the arrester is provided with electric discharge mutual inductor, the disconnecting switch
It is connected with the arrester and the electric discharge mutual inductor by electric wire with discharging gap, the one side of the electric cabinet is provided with
Water cooling box is connected between the electric cabinet and the water cooling box by outlet pipe with return pipe respectively, the inside of the outlet pipe
It is provided with water pump.
As a kind of optimal technical scheme of the utility model, the electric cabinet is internally provided with workpiece box, the work
Part case is internally provided with temperature sensor, and coolant flow channel, the surface of the coolant flow channel are provided on the outside of the workpiece box
It is respectively arranged with water inlet and water return outlet.
As a kind of optimal technical scheme of the utility model, the discharging gap uses sphere gap.
As a kind of optimal technical scheme of the utility model, the disconnecting switch, the electric cabinet and the electric cabinet
Support column is respectively positioned on same level straight line.
As a kind of optimal technical scheme of the utility model, the outlet pipe and the return pipe respectively with the water inlet
Mouth and the water return outlet communicate, and the water cooling box is communicated by the outlet pipe and the return pipe with the coolant flow channel.
As a kind of optimal technical scheme of the utility model, the disconnecting switch and the arrester and the electric discharge
Mutual inductor is electrically connected by the electric wire and the discharging gap, and the electric cabinet and the disconnecting switch are electrically connected,
The temperature sensor is internally provided with circuit board, and the temperature sensor and the circuit board are electrically connected, the circuit
Plate is PCB circuit board, and the circuit board is internally provided with amplifier, analog-digital converter and microcontroller, and the amplifier, described
Analog-digital converter and the microcontroller are electrically connected, and the circuit board is electrically connected with the water pump.
The advantageous effect that the utility model is reached is：The device is that a kind of power transformer neutral ground is quickly protected
Device sets water cooling box, and by firm sensor move, and is conducive to when electric cabinet internal operating temperature is higher, into
Row Water-cooling circulating, the moderate temperature inside safeguard work case are conducive to improve the reaction time of protection, are protected so as to fulfill quick
Shield, provides a kind of power transformer neutral ground rapid protecting device.The utility model is designed reasonably, simple in structure, peace
It is complete reliable, easy to use, easy to maintain, it has good value for applications.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
New embodiment for explaining the utility model, does not form the limitation to the utility model together.In the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the electric cabinet attachment structure schematic diagram of the utility model；
Fig. 3 is the electric cabinet internal structure schematic diagram of the utility model；
Fig. 4 is the working circuit diagram of the utility model.
In figure：1st, device body；2nd, electric cabinet support column；3rd, pre-buried support column；4th, support pad；5th, electric cabinet；6th, pacify
Assembling platform；7th, disconnecting switch；8th, arrester；9th, discharge mutual inductor；10th, discharging gap；11st, electric wire；12nd, water cooling box；13rd, fill
Mouthful；14th, outlet pipe；15th, return pipe；16th, water pump；17th, workpiece box；18th, temperature sensor；19th, coolant flow channel；20th, water inlet；
21st, water return outlet.
Specific embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent
Embodiment is selected to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment 1
As shown in Figs 1-4, the utility model provides a kind of power transformer neutral ground rapid protecting device, including dress
Put body 1, the bottom of device body 1 is respectively arranged with electric cabinet support column 2 and pre-buried support column 3, electric cabinet support column 2 and pre-
The bottom for burying support column 3 is both provided with support pad 4, and the surface of electric cabinet support column 2 is provided with electric cabinet 5, electric cabinet support
The top of column 2 and pre-buried support column 3 is both provided with mounting platform 6, and the top of mounting platform 6 is provided with disconnecting switch 7, keeps apart
The one side for closing 7 is provided with arrester 8, the one side of arrester 8 be provided with electric discharge mutual inductor 9, disconnecting switch 7 and arrester 8 and
Electric discharge mutual inductor 9 is connected by electric wire 11 and discharging gap 10, and the one side of electric cabinet 5 is provided with water cooling box 12,5 He of electric cabinet
It is connected respectively by outlet pipe 14 and return pipe 15 between water cooling box 12, outlet pipe 14 is internally provided with water pump 16.
Electric cabinet 5 is internally provided with workpiece box 17, and workpiece box 17 is internally provided with temperature sensor 18, workpiece box 17
Outside be provided with coolant flow channel 19, the surface of coolant flow channel 19 is respectively arranged with water inlet 20 and water return outlet 21.Be conducive to for
5 inside of electric cabinet carries out Water-cooling circulating.
Discharging gap 10 uses sphere gap.Sphere gap is stablized for uniform electric field discharge voltage, and the small protective value of dispersiveness is good,
Sphere gap field adjustable is easier.
Disconnecting switch 7, electric cabinet 5 and electric cabinet support column 2 are respectively positioned on same level straight line.When being conducive to protection reaction
Between it is rapid.
Outlet pipe 14 and return pipe 15 communicate respectively with water inlet 20 and water return outlet 21, and water cooling box 12 passes through 14 He of outlet pipe
Return pipe 15 is communicated with coolant flow channel 19.Be conducive to outlet pipe 14 and return pipe 15 is connected respectively with water inlet 20 and water return outlet 21
Closely, water cooling box 12 is completely embedded by outlet pipe 14 and return pipe 15 with coolant flow channel 19.
Disconnecting switch 7 and arrester 8 and electric discharge mutual inductor 9 are electrically connected by electric wire 11 and discharging gap 10, electricity
Control case 5 and disconnecting switch 7 are electrically connected, and temperature sensor 18 is internally provided with circuit board, temperature sensor 18 and circuit board
It is electrically connected, circuit board is PCB circuit board, and circuit board is internally provided with amplifier, analog-digital converter and microcontroller, and amplifies
Device, analog-digital converter and microcontroller are electrically connected, and circuit board is electrically connected with water pump 16.Be conducive to through disconnecting switch 7, keep away
Thunder device 8, electric discharge mutual inductor 9 and discharging gap 10 realize protection.
The device is a kind of power transformer neutral ground rapid protecting device, and discharging gap 10 uses sphere gap；Every
Pass 7, electric cabinet 5 and electric cabinet support column 2 is left to be respectively positioned on same level straight line；Outlet pipe 14 and return pipe 15 respectively with into
The mouth of a river 20 and water return outlet 21 communicate, and water cooling box 12 is communicated by outlet pipe 14 and return pipe 15 with coolant flow channel 19；Disconnecting switch 7
It is electrically connected with arrester 8 and electric discharge mutual inductor 9 by electric wire 11 and discharging gap 10,7 electricity of electric cabinet 5 and disconnecting switch
Property connection, temperature sensor 18 is internally provided with circuit board, and temperature sensor 18 and circuit board are electrically connected, and circuit board is
PCB circuit board, circuit board are internally provided with amplifier, analog-digital converter and microcontroller, and amplifier, analog-digital converter and monolithic
Machine is electrically connected, and circuit board is electrically connected with water pump 16；When needing with the device, in the case of usual, disconnecting switch 7 is in
Open position.When lightning surge and general operation overvoltage are invaded, arrester 8 works, and absorbs and discharges overvoltage energy,
Protect transformer neutral point insulation from its evil, discharging gap 10 does not work in such cases.And when system have occurred it is ferromagnetic humorous
Shake, high-frequency resonant is when transient overvoltages, gap acts 10 disruptive discharges, and overvoltage energy is released into ground, and transformer is neutral
Point transient earthing operation, prevents accident sustainable development, and electric cabinet 5 is cut off the power in time, and arrester 8 is protected to exempt thermal runaway
Accident is produced, and electric cabinet 5 at work, can generate substantial amounts of thermal energy, at this time temperature sensor 18 by temperature inversion into number
Word, is worked by circuit board control water pump 16, and extracting water source out from water cooling box 12 is flowed by outlet pipe 14 in coolant flow channel 19, and from
Return pipe 15 flows into water cooling box 12, is radiated by liquid flowing to workpiece box 17, has ensured 17 internal workpiece work of workpiece box
Work is stablized, and can realize quick protection.
The advantageous effect that the utility model is reached is：The device is that a kind of power transformer neutral ground is quickly protected
Device sets water cooling box, and by firm sensor move, and is conducive to when electric cabinet internal operating temperature is higher, into
Row Water-cooling circulating, the moderate temperature inside safeguard work case are conducive to improve the reaction time of protection, are protected so as to fulfill quick
Shield, provides a kind of power transformer neutral ground rapid protecting device.The utility model is designed reasonably, simple in structure, peace
It is complete reliable, easy to use, easy to maintain, it has good value for applications.
Finally it should be noted that：The above is only the preferred embodiment of the utility model only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical solution recorded in foregoing embodiments or to which part technical characteristic
Carry out equivalent substitution.Within the spirit and principle of the utility model, any modifications, equivalent replacements and improvements are made,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of power transformer neutral ground rapid protecting device, including device body（1）, which is characterized in that the dress
Put body（1）Bottom be respectively arranged with electric cabinet support column（2）With pre-buried support column（3）, the electric cabinet support column（2）With
The pre-buried support column（3）Bottom be both provided with support pad（4）, the electric cabinet support column（2）Surface be provided with electricity
Control case（5）, the electric cabinet support column（2）With the pre-buried support column（3）Top be both provided with mounting platform（6）, it is described
Mounting platform（6）Top be provided with disconnecting switch（7）, the disconnecting switch（7）One side be provided with arrester（8）, it is described
Arrester（8）One side be provided with electric discharge mutual inductor（9）, the disconnecting switch（7）With the arrester（8）And the electric discharge
Mutual inductor（9）Pass through electric wire（11）And discharging gap（10）Connection, the electric cabinet（5）One side be provided with water cooling box
（12）, the water cooling box（12）Top be provided with charging port（13）, the electric cabinet（5）With the water cooling box（12）Between point
Outlet pipe is not passed through（14）And return pipe（15）Connection, the outlet pipe（14）Be internally provided with water pump（16）.
2. a kind of power transformer neutral ground rapid protecting device according to claim 1, which is characterized in that described
Electric cabinet（5）Be internally provided with workpiece box（17）, the workpiece box（17）Be internally provided with temperature sensor（18）, it is described
Workpiece box（17）Outside be provided with coolant flow channel（19）, the coolant flow channel（19）Surface be respectively arranged with water inlet（20）
And water return outlet（21）.
3. a kind of power transformer neutral ground rapid protecting device according to claim 1, which is characterized in that described
Discharging gap（10）Using sphere gap.
4. a kind of power transformer neutral ground rapid protecting device according to claim 1, which is characterized in that described
Disconnecting switch（7）, the electric cabinet（5）With the electric cabinet support column（2）It is respectively positioned on same level straight line.
5. a kind of power transformer neutral ground rapid protecting device according to claim 2, which is characterized in that described
Outlet pipe（14）With the return pipe（15）Respectively with the water inlet（20）With the water return outlet（21）It communicates, the water cooling box
（12）Pass through the outlet pipe（14）With the return pipe（15）With the coolant flow channel（19）It communicates.
6. a kind of power transformer neutral ground rapid protecting device according to claim 2, which is characterized in that described
Disconnecting switch（7）With the arrester（8）And the electric discharge mutual inductor（9）Pass through the electric wire（11）Between the electric discharge
Gap（10）It is electrically connected, the electric cabinet（5）With the disconnecting switch（7）It is electrically connected, the temperature sensor（18）It is interior
Portion is provided with circuit board, the temperature sensor（18）It being electrically connected with the circuit board, the circuit board is PCB circuit board,
The circuit board is internally provided with amplifier, analog-digital converter and microcontroller, and the amplifier, the analog-digital converter and institute
It states microcontroller to be electrically connected, the circuit board and the water pump（16）It is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278002.2U CN207381813U (en) | 2017-09-30 | 2017-09-30 | A kind of power transformer neutral ground rapid protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278002.2U CN207381813U (en) | 2017-09-30 | 2017-09-30 | A kind of power transformer neutral ground rapid protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207381813U true CN207381813U (en) | 2018-05-18 |
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ID=62338483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721278002.2U Active CN207381813U (en) | 2017-09-30 | 2017-09-30 | A kind of power transformer neutral ground rapid protecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207381813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342386A (en) * | 2020-03-09 | 2020-06-26 | 浙江日新电气有限公司 | SF6 gas insulation totally-enclosed neutral point intelligent protection device |
-
2017
- 2017-09-30 CN CN201721278002.2U patent/CN207381813U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342386A (en) * | 2020-03-09 | 2020-06-26 | 浙江日新电气有限公司 | SF6 gas insulation totally-enclosed neutral point intelligent protection device |
| CN111342386B (en) * | 2020-03-09 | 2021-02-05 | 浙江日新电气有限公司 | SF6 gas insulation totally-enclosed neutral point intelligent protection device |
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