CN202121296U - Power transformer with self-protection function - Google Patents
Power transformer with self-protection function Download PDFInfo
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- CN202121296U CN202121296U CN2011202029275U CN201120202927U CN202121296U CN 202121296 U CN202121296 U CN 202121296U CN 2011202029275 U CN2011202029275 U CN 2011202029275U CN 201120202927 U CN201120202927 U CN 201120202927U CN 202121296 U CN202121296 U CN 202121296U
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Abstract
Provided is a power transformer with a self-protection function, comprising a switch, a high voltage coil connected with a high voltage power line via the switch, and a low voltage coil used for outputting low voltage. The power transformer further comprises a current control coil and a relay, wherein the current control coil is serially connected between the high voltage power line and the switch for linkage with the relay according to the over current of the low voltage portion of the transformer, the short circuit current, and the time, thus to turn off the switch and switch off the high voltage power. The power transformer of the utility model features simple structure and easy installation and maintenance, and is capable of effectively realizing self-protection in cases of over current, short circuit, and lightning stroke.
Description
Technical field
The utility model relates to a kind of power transformer with self-protection function, relates in particular to the power transformer with self-protection function below a kind of 630KVA.
Background technology
In China, the installation of the compact electrical transformers in the rural area below the 630kVA is sizable, but the rural line often lacks safety guard owing to its residing environment, often is struck by lightning, faults such as overload and short circuit.In the damage quantity of the annual power transformer of China; The damage quantity of the power transformer in rural area has just accounted for 85%; Wherein the damage quantity of the power transformer below the 160kVA accounts for whole rural power transformer and damages 85% of quantity; Thereby, in this field, be badly in need of providing a kind of more small-sized power transformer that has self-protection function.
In the power transformer in current rural area, often adopt comparatively original protective device, promptly adopt the high-voltage fuse protection, also there are a lot of defectives in fuse itself, for example can't set the overload and the short circuit rated value of electric current respectively.Even so owing to the weakness of awareness of safety and the scarcity relatively of rural resource, the electrical management personnel often adopt aluminium, copper cash to replace high-voltage fuse and power transformer directly is communicated with, and have so often further caused power transformer to damage easily.
Like the power transformer more than the 800KVA fairly simple protective device often is set for more large-scale.
In the prior art; China utility model patent CN2048246U (being patent documentation 1) discloses a kind of automatic protector of power transformer; It has DC circuit, carries out switch, door switch, delayer, trigger, current controller and current monitor; Automatically cut off the electricity supply when realizing overload, short circuit, thunderbolt through these devices, fault is got rid of back turn-on power automatically, but this protector is arranged in the low-pressure section of transformer; This protector is only protected the device that links to each other with transformer, and can't effectively protect transformer itself.This patent documentation 1 disclosed full content is through being incorporated herein by reference.
China utility model patent CN2420770Y (being patent documentation 2) also discloses a kind of multi-functional transformer; It realizes when overcurrent, overvoltage, overtemperature or abnormal conditions such as stolen appear in three-phase ac transformer, can informing to the relevant personnel through the telephone automatic alarm device through thermistor and current relay; Be that it only comprises warning function, and can not carry out self-protection according to abnormal conditions.These patent documentation 2 disclosed full contents are through being incorporated herein by reference.
China utility model patent CN2549636Y (being patent documentation 3) provides a kind of electromagnetic type power transformer/motor high-low pressure integrated protection circuit breaker; It has overload controller, short circuit controller, magneto-electric electric leakage watch-dog, switch tripping controller, phase failure signal monitor and high-low pressure phase failure controller; Zero phase line open circuit voltage overvoltage protection, zero phase line short-circuit voltage overvoltage protection and three phase mains superpressure, dark under voltage protection function have been realized; Its obvious structure is comparatively complicated; Manufacturing cost is higher, be not adapted at the vast rural area that lacks of capital relatively and use, and its installation, operation and maintenance is comparatively loaded down with trivial details.These patent documentation 3 disclosed full contents are through being incorporated herein by reference.
China utility model patent CN201726111U (being patent documentation 4) discloses a kind of 10-20kV transformer monitoring temperature intelligent apparatus; It is provided with the signals collecting data circuit, signal data calculates decision circuitry, switching manipulation circuit and optical transceiver circuit; It is realized for reporting to the police or directly tripping operation through data acquisition and control equally; But its complex structure is equally comparatively loaded down with trivial details for its installation, operation and maintenance.These patent documentation 4 disclosed full contents are through being incorporated herein by reference.
Summary of the invention
The purpose of the utility model provides comparatively simple, the power transformer of self-shield more efficiently of a kind of structure.
According to an aspect of the utility model, the utility model provides a kind of power transformer with self-protection function, and this power transformer comprises: switch; High-tension coil, this high-tension coil is connected with high-voltage power line through switch; And low-voltage coil, this low-voltage coil is in order to the output low voltage voltage; This power transformer also comprises Current Control coil and relay; This Current Control coil is connected between said high-voltage power line and the said switch; And, breaking off said switch, and then break off high-tension electricity according to the parameter of the transformer low voltage part said relay that links.
Preferably, this parameter is overcurrent, short circuit current and the scheduled time, thereby splitting to close according to these parameters carries out opening operation, when being implemented in overcurrent, short circuit and the scheduled time to the protection of power transformer; Said Current Control coil, said relay and said switch become one.
Preferably; This power transformer also comprises lightning proof, and this lightning proof comprises piezo-resistance and discharging gap, and an end of this piezo-resistance is connected between switch and the Current Control coil; The other end links to each other with a side of discharging gap, and the opposite side of discharging gap links to each other with ground.Therefore, when thunderbolt occurring, can the thunderbolt electric wave be avoided the damage to power transformer through gap discharge.
Preferably; This relay is connected with control box; Be provided with temperature control equipment, burglar alarm and/or remote control device in this control box, and this control box is arranged on the outside of said power transformer, thereby realizes early warning and remote control the power transformer fault.
Preferably; This relay is connected with control box; Be provided with temperature control equipment, burglar alarm and/or remote control device in this control box; And this control box is arranged on the inside of said power transformer, thereby realizes early warning and remote control to the power transformer fault, and these automatic control equipments and this power transformer are become one.
Preferably, said power transformer is the transformer below the 630kVA.
According to the utility model on the other hand; The utility model provides a kind of power transformer with self-protection function; This power transformer comprises high-tension coil, low-voltage coil and switch; This high-tension coil comprises first high-tension coil, second high-tension coil and the 3rd high-tension coil; This low-voltage coil comprises first low-voltage coil, second low-voltage coil and the 3rd low-voltage coil; This switch comprises first switch, second switch and the 3rd switch, and the A through first switch, second switch and the 3rd switch and high-voltage power line mutually respectively, B phase, C be connected for this first high-tension coil, second high-tension coil and the 3rd high-tension coil, and the low-pressure section of this power transformer is exported low voltage voltage through first low-voltage coil, second low-voltage coil and the 3rd low-voltage coil; This power transformer also comprises Current Control coil and relay; This Current Control coil comprises the first Current Control coil, the second Current Control coil and the 3rd Current Control coil; This relay comprises first relay, second relay and the 3rd relay; The A of this first switch and high-voltage power line mutually between, the B of this second switch and high-voltage power line mutually between and be in series with the first Current Control coil, this second Current Control coil and the 3rd Current Control coil respectively between the C phase of the 3rd switch and high-voltage power line; With respectively according to the parameter of transformer low voltage part; And first relay that links respectively, second relay and the 3rd relay correspondingly breaking off said first switch, said second switch and said the 3rd switch, and then break off high-tension electricity.
Preferably, this parameter is overcurrent, short circuit current and the scheduled time, thereby splitting to close according to these parameters carries out opening operation, when being implemented in overcurrent, short circuit and the scheduled time to the protection of power transformer; Said Current Control coil, said relay and said switch become one.
Preferably; This power transformer also comprises first lightning proof, second lightning proof and the 3rd lightning proof; This first lightning proof comprises first piezo-resistance and first discharging gap; One end of this first piezo-resistance is connected between first switch and the first Current Control coil, and the other end links to each other with a side of first discharging gap, and the opposite side of first discharging gap links to each other with ground; This second lightning proof comprises second piezo-resistance and second discharging gap; One end of this second piezo-resistance is connected between the second switch and the second Current Control coil; The other end links to each other with a side of second discharging gap, and the opposite side of second discharging gap links to each other with ground; The 3rd lightning proof comprises the 3rd piezo-resistance and the 3rd discharging gap; One end of the 3rd piezo-resistance is connected between the 3rd switch and the 3rd Current Control coil; The other end links to each other with a side of the 3rd discharging gap, and the opposite side of the 3rd discharging gap links to each other with ground.Therefore, in a certain thunderbolt of appearance mutually, can the thunderbolt electric wave be avoided the damage to power transformer through gap discharge.
Preferably; First relay, second relay and the 3rd relay are connected with first control box, second control box and the 3rd control box respectively; Said first control box, said second control box and said the 3rd control box are provided with temperature control equipment, burglar alarm and/or remote control device; In order to each is controlled mutually automatically; In said first control box, said second control box and said the 3rd control box one or all be arranged on the outside of this power transformer, thus realize early warning and remote control to the power transformer fault.
Preferably; First relay, second relay and the 3rd relay are connected with first control box, second control box and the 3rd control box respectively; Said first control box, said second control box and said the 3rd control box are provided with temperature control equipment, burglar alarm and/or remote control device; In order to each is controlled mutually automatically; In said first control box, said second control box and said the 3rd control box one or all be arranged on the inside of this power transformer, thus realize early warning and remote control to the power transformer fault, and these automatic control equipments and this power transformer are become one.
Preferably, said power transformer is the transformer below the 630kVA.
The power transformer of the utility model can well be realized under overcurrent, short circuit and the thunderbolt situation; For the protection of power transformer, and adopt the combination of Current Control coil and relay, and Current Control coil, relay and switch can become one and carry out inter-working; Thereby in the compact electrical transformers of packing into microminiaturizedly; And need not change original size of power transformer, thus simple and compact for structure, be easy to install and operation; Can be when thunderbolt occurring can not damage under the situation of transformer lightning wave through after the filtering of Current Control coil current limliting; Via the piezo-resistance pressure limiting, discharge over the ground through the gap at last again, prevent effectively because the damage of the power transformer that thunderbolt is caused.
Description of drawings
Fig. 1 shows a specific embodiment of the utility model.
Embodiment
The utility model discloses a kind of power transformer with self-protection function; This power transformer 8 comprises high-tension coil and low-voltage coil; This high-tension coil comprises the first high-tension coil X, the second high-tension coil Y and the 3rd high-tension coil Z; This low-voltage coil comprises the first low-voltage coil x, the second low-voltage coil y and the 3rd low-voltage coil z; The A through first K switch 1, second switch K2 and the 3rd K switch 3 and high-voltage power line mutually respectively, B phase, C be connected for this first high-tension coil, second high-tension coil and the 3rd high-tension coil, and the low-pressure section of this power transformer is exported low voltage voltage through the first low-voltage coil x, the second low-voltage coil y and the 3rd low-voltage coil c.
This low voltage voltage preferably includes low pressure terminal a, b, and c, the o phase is preferably 400/230V voltage.
The first high-tension coil X is connected at terminal A 1 place with first K switch 1, and the second high-tension coil Y is connected at terminal B 1 place with second switch K2, and the 3rd high-tension coil Z is connected at end points C1 place with the 3rd K switch 3.
This power transformer also comprises the Current Control coil; This Current Control coil comprises the first Current Control coil L1, the second Current Control coil L2 and the 3rd Current Control coil L3; The A of this first K switch 1 and high-voltage power line mutually between, the B of this second switch K2 and high-voltage power line mutually between and be connected through the first Current Control coil L1, this second Current Control coil L2 and the 3rd Current Control coil L3 respectively between the C phase of the 3rd K switch 3 and high-voltage power line; With when short circuit and overload operation appear in the circuit that terminal was connect of transformer low voltage part and load; Respectively according to transformer low voltage parameter partly; And link respectively first relay J 1, second relay J 2 and the 3rd relay J 3; Correspondingly breaking off said first K switch 1, said second switch K2 and said the 3rd K switch 3, and then break off high-tension electricity.
The parameter of transformer low voltage part is the size and the scheduled time of the overcurrent and the short circuit current of a phase, b phase, c phase, in view of the above, and the first Current Control coil L1, first relay J 1 that links, and it is closed first K switch 1, thus break off high voltage source; Therewith in like manner, the second Current Control coil L2, second relay J 2 that links, and it is closed second switch K2; Thereby disconnection high voltage source; The 3rd Current Control coil L3 the 3rd relay J 3 that links, and it is closed the 3rd K switch 3, thus break off high voltage source.
This power transformer also comprises first lightning proof, second lightning proof and the 3rd lightning proof; This first lightning proof comprises the first piezo-resistance R1 and the first discharging gap S1; The end of this first piezo-resistance R1 is connected between first K switch 1 and the first Current Control coil L1; The other end links to each other with the side of the first discharging gap S1, and the opposite side of the first discharging gap S1 links to each other with ground; This second lightning proof comprises the second piezo-resistance R2 and the second discharging gap S2; The end of this second piezo-resistance R2 is connected between the second switch K2 and the second Current Control coil L2; The other end links to each other with the side of the second discharging gap S2, and the opposite side of the second discharging gap S2 links to each other with ground; The 3rd lightning proof comprises the 3rd piezo-resistance R3 and the 3rd discharging gap S3; The end of the 3rd piezo-resistance R3 is connected between the 3rd K switch 3 and the 3rd Current Control coil L3; The other end links to each other with the side of the 3rd discharging gap S3, and the opposite side of the 3rd discharging gap S3 links to each other with ground.
The A of high-voltage power line phase, B phase, C in mutually one or more receive high pressure thunderbolt etc. in; Lightning wave can be distinguished correspondingly via after the first Current Control coil L1, the second Current Control coil L2 and the 3rd Current Control coil L3 current limliting filtering; Correspondingly pass to the first piezo-resistance R1, the second piezo-resistance R2 and the 3rd piezo-resistance R3; After its pressure limiting, correspondingly discharge over the ground, thereby well this power transformer is played anti-thunderbolt effect at the first discharging gap S1, the second discharging gap S2 and the 3rd discharging gap S3.
First relay J 1, second relay J 2 and the 3rd relay J 3 are connected with the first control box T1, the second control box T2 and the 3rd control box T3; First control box, second control box and the 3rd control box are provided with automatic control equipments such as temperature control equipment, burglar alarm and/or remote control device, in order to each is controlled mutually automatically.This first control box, second control box and the 3rd control box can all be arranged on the inside or the outside of this power transformer, also can one or more be arranged on the inside or the outside of transformer.
Claims (10)
1. power transformer with self-protection function, this power transformer comprises:
Switch;
High-tension coil, this high-tension coil is connected with high-voltage power line through said switch; And
Low-voltage coil, this low-voltage coil is in order to the output low voltage voltage;
It is characterized in that,
This power transformer also comprises Current Control coil and relay; Said Current Control coil is connected between said high-voltage power line and the said switch; And, breaking off said switch, and then break off high-tension electricity according to the parameter of the transformer low voltage part said relay that links.
2. power transformer as claimed in claim 1, wherein, said parameter is overcurrent, short circuit current and the scheduled time, said Current Control coil, said relay and said switch become one.
3. power transformer as claimed in claim 2; Wherein, This power transformer also comprises lightning proof, and said lightning proof comprises piezo-resistance and discharging gap, and an end of said piezo-resistance is connected between said switch and the said Current Control coil; The other end links to each other with a side of said discharging gap, and the opposite side of discharging gap links to each other with ground.
4. like arbitrary described power transformer among the claim 1-3; Wherein, Said relay is connected with control box; Be provided with temperature control equipment, burglar alarm and/or remote control device in the said control box, and said control box is arranged on the outside of said power transformer, said power transformer is the transformer below the 630kVA.
5. like arbitrary described power transformer among the claim 1-3; Wherein, Said relay is connected with control box; Be provided with temperature control equipment, burglar alarm and/or remote control device in the said control box, and said control box is arranged on the inside of said power transformer, said power transformer is the transformer below the 630kVA.
6. power transformer with self-protection function; This power transformer comprises high-tension coil, low-voltage coil and switch; This high-tension coil comprises first high-tension coil, second high-tension coil and the 3rd high-tension coil; This low-voltage coil comprises first low-voltage coil, second low-voltage coil and the 3rd low-voltage coil; Said switch comprises first switch, second switch and the 3rd switch; The A through said first switch, said second switch and said the 3rd switch and high-voltage power line mutually respectively, B phase, C be connected for said first high-tension coil, said second high-tension coil and said the 3rd high-tension coil, and the low-pressure section of this power transformer is exported low voltage voltage through said first low-voltage coil, said second low-voltage coil and said the 3rd low-voltage coil;
It is characterized in that,
This power transformer also comprises Current Control coil and relay; Said Current Control coil comprises the first Current Control coil, the second Current Control coil and the 3rd Current Control coil; Said relay comprises first relay, second relay and the 3rd relay; The A of said first switch and high-voltage power line mutually between, the B of said second switch and high-voltage power line mutually between and be in series with the said first Current Control coil, the said second Current Control coil and said the 3rd Current Control coil respectively between the C phase of said the 3rd switch and high-voltage power line; With respectively according to the parameter of transformer low voltage part; And said first relay that links respectively, said second relay and said the 3rd relay; Correspondingly breaking off said first switch, said second switch and said the 3rd switch, and then break off high-tension electricity.
7. power transformer as claimed in claim 6, wherein, said parameter is overcurrent, short circuit current and the scheduled time, said Current Control coil, said relay and said switch become one.
8. power transformer as claimed in claim 7; Wherein, This power transformer also comprises first lightning proof, second lightning proof and the 3rd lightning proof, and said first lightning proof comprises first piezo-resistance and first discharging gap, and an end of said first piezo-resistance is connected between said first switch and the said first Current Control coil; The other end links to each other with a side of said first discharging gap, and the opposite side of said first discharging gap links to each other with ground; Said second lightning proof comprises second piezo-resistance and second discharging gap; One end of said second piezo-resistance is connected between said second switch and the said second Current Control coil; The other end links to each other with a side of said second discharging gap, and the opposite side of said second discharging gap links to each other with ground; Said the 3rd lightning proof comprises the 3rd piezo-resistance and the 3rd discharging gap; One end of said the 3rd piezo-resistance is connected between said the 3rd switch and said the 3rd Current Control coil; The other end links to each other with a side of said the 3rd discharging gap, and the opposite side of said the 3rd discharging gap links to each other with ground.
9. like arbitrary described power transformer among the claim 6-8; Wherein, Said first relay, said second relay and said the 3rd relay are connected with first control box, second control box and the 3rd control box respectively; Said first control box, said second control box and said the 3rd control box are provided with temperature control equipment, burglar alarm and/or remote control device; In order to each is controlled mutually automatically, in said first control box, said second control box and said the 3rd control box one or all be arranged on the outside of this power transformer, said power transformer is the transformer below the 630kVA.
10. like arbitrary described power transformer among the claim 6-8; Wherein, Said first relay, said second relay and said the 3rd relay are connected with first control box, second control box and the 3rd control box respectively; Said first control box, said second control box and said the 3rd control box are provided with temperature control equipment, burglar alarm and/or remote control device; In order to each is controlled mutually automatically, in said first control box, said second control box and said the 3rd control box one or all be arranged on the inside of this power transformer, said power transformer is the transformer below the 630kVA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202029275U CN202121296U (en) | 2011-06-15 | 2011-06-15 | Power transformer with self-protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202029275U CN202121296U (en) | 2011-06-15 | 2011-06-15 | Power transformer with self-protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121296U true CN202121296U (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202029275U Expired - Fee Related CN202121296U (en) | 2011-06-15 | 2011-06-15 | Power transformer with self-protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832595A (en) * | 2011-06-15 | 2012-12-19 | 蒋通军 | Power transformer with self-protection function |
-
2011
- 2011-06-15 CN CN2011202029275U patent/CN202121296U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832595A (en) * | 2011-06-15 | 2012-12-19 | 蒋通军 | Power transformer with self-protection function |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160809 Address after: 554300 Daxing high tech Zone, Tongren, Guizhou Patentee after: Jiang Chao Patentee after: Yin Jun Address before: Tongren City, Guizhou province 564300 ring copper Jiang Cun Wu Xian Miao Group No. 63 North Office Patentee before: Jiang Tongjun |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20180615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |