CN1058804C - Transformer switch combination unit - Google Patents
Transformer switch combination unit Download PDFInfo
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- CN1058804C CN1058804C CN97118938A CN97118938A CN1058804C CN 1058804 C CN1058804 C CN 1058804C CN 97118938 A CN97118938 A CN 97118938A CN 97118938 A CN97118938 A CN 97118938A CN 1058804 C CN1058804 C CN 1058804C
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- transformer
- fuse
- expulsion
- delayed type
- fuses
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Abstract
The present invention discloses a transformer switch assembly device which belongs to the technical field of power transformation power distribution. An assembly transformer is composed of a load switch, a delaying type fuse, an impulse type fuse and a three-phase pentastyle transformer in line assembly. The load switch, the delaying type fuse and the impulse type fuse are arranged in a transformer box body. The combined transformer can prevent power supplying accidents which result from impulse current, the lack of phase power supply and the accident of the transformer and can protect user devices. The present invention has the advantages of safety and small volume, and is suitable for the power distribution transmission device of power network and the use terminal which is connected with the power network.
Description
The present invention relates to a kind of transformer switch combination unit, belong to electric power power transformation, distribution technique field.
In the power supply network of China, used distribution power transmitting device is made up of box three-phase three-limb transformer, fuse switch and on-load switch now, fuse switch and on-load switch are connected on the high pressure primary side of transformer, and the low-voltage output of transformer and user's power consumption equipment link.This distribution power transmitting device volume is big, efficient is low, when between the transformer genetic horizon, during fault such as turn-to-turn short circuit, distribution power transmitting device and power supply network can not be kept apart, easily cause accident of power supply, when power supply network breaks down, when causing the power supply of high-tension electricity phase shortage, this three-phase three-limb transformer will cause the serious variation of low-voltage power supply voltage, cause damage to subscriber equipment, therefore the power supply reliability of this distribution power transmitting device is low, can not satisfy in the current power supply requirement to the distribution power transmitting device.
The objective of the invention is to design a kind of transformer switch combination unit, volume is little, the efficient height, and the power supply reliability height can prevent that the subscriber equipment that causes because of phase shortage power supply and transformer fault from damaging.
The transformer switch combination unit of the present invention's design is made up of delayed type fuse, expulsion-fuse, on-load switch and box three-phase five-limb transformer, delayed type fuse, expulsion-fuse and on-load switch are installed in the casing of transformer, and on-load switch, delayed type fuse and expulsion-fuse are connected with the first siding ring of transformer.
Be oil-filled in the casing of transformer or fill sulphur hexafluoride.The oil that is filled in the casing can be oil such as transformer oil, silicone oil.
Delayed type fuse, expulsion-fuse and on-load switch are installed in the additional casing, be oil-filled in this additional casing, or fill sulphur hexafluoride, or vacuum, this additional casing is installed in outside the casing of transformer.The oil that is filled in the casing can be oil such as transformer oil, silicone oil.
The transformer switch combination unit of the present invention's design is made up of additional casing that delayed type fuse, expulsion-fuse and on-load switch are housed and dry type three-phase five-limb transformer, the additional casing that delayed type fuse, expulsion-fuse and on-load switch are housed is installed on the support of dry-type transformer, and on-load switch, delayed type fuse and expulsion-fuse are connected with the transformer first siding ring.
The first siding ring of three-phase five-limb transformer is a delta connection, and three groups of fuses are made up of a delayed type fuse and an expulsion-fuse for every group, are connected on the input of triangle contact respectively.
There is one group in three groups of fuses an expulsion-fuse can only be arranged.
The first siding ring of three-phase five-limb transformer is a delta connection, three delayed type fuses or three expulsion-fuses are connected on the input of triangle contact respectively, three expulsion-fuses or three fuses are connected on respectively in three coils, are connected on head end or end in the coil.
When three delayed type fuses are connected on the input of triangle contact or be connected in three coils, can also be only at the input of two triangle contacts or only in two coils, be in series with delay-action fuse.
The first siding ring of three-phase five-limb transformer is a delta connection, three groups of fuses, form by a delayed type fuse and an expulsion-fuse for every group, be connected on respectively in three coils, one group of fuse is connected on the head end of a coil, or be connected on the end of a coil, or delayed type fuse and expulsion-fuse are connected on the head end and the end of a coil respectively.
There is one group in three groups of fuses an expulsion-fuse can only be arranged.
The first siding ring of three-phase five-limb transformer is a Y connection, three groups of fuses, form by a delayed type fuse and an expulsion-fuse for every group, be connected on respectively in three coils, one group of fuse is connected on the head end of a coil, or be connected on the end of a coil, or delayed type fuse and expulsion-fuse are connected on the head end and the end of a coil respectively.
The first siding ring of three-phase five-limb transformer is Y
oThe shape connection.Three groups of fuses are made up of a delayed type fuse and an expulsion-fuse for every group, are connected on respectively in three coils, and the mode of series connection is identical when being Y connection with first siding ring.
The designed transformer switch combination unit of the present invention is formed by three-phase five-limb transformer, delayed type fuse, expulsion-fuse and on-load switch tandem compound, therefore has following advantage:
1. owing to adopted the expulsion-fuse of big electric current, short action time characteristic, when impulse current acted on transformer switch combination unit, impulse current was during greater than set point, and expulsion-fuse opens circuit, and can prevent to damage transformer.
2. owing to adopted the delayed type fuse that has certain electric current to add certain action time of characteristic; when transformer generation layer short circuit, when minor insulation damages, cause that electric current increases to certain value, and behind the effect certain hour; the delayed type fuse opens circuit, protection power supply network and subscriber equipment safety.
3. owing to adopt the three-phase five-limb transformer, when the power supply phase shortage,, other phase supply power voltage is seriously changed, protect subscriber equipment safety because transformer has the bypass magnetic flux to exist.
4. owing to adopt connect method in the first siding ring of three-phase five-limb transformer and delayed type fuse; after some coils cause that because of overcurrent or fault own the delayed type fuse opens circuit; because transformer has the bypass magnetic flux to exist; serious variation can not take place in other phase supply power voltage, has protected subscriber equipment safety.
Since delayed type fuse and expulsion-fuse, on-load switch can be immersed in oil or the silicone oil, or be installed in the casing that fills sulphur hexafluoride, also can directly be contained in the casing of transformer, thereby dwindled the volume of whole transformer switch combination unit, reduce circuit loss, improved efficient.
Fig. 1 is a kind of structural representation of transformer switch combination unit.
Fig. 2 is the structural representation of second kind of transformer switch combination unit.
Fig. 3 is the structural representation of the third transformer switch combination unit.
Fig. 4 is a kind of circuit theory diagrams of transformer switch combination unit.
Fig. 5 is the circuit theory diagrams of another kind of transformer switch combination unit.
Below in conjunction with drawings and Examples transformer switch combination unit being done one describes in detail.
Embodiment 1
Fig. 1 has represented a kind of structural representation of transformer switch combination unit, and wherein A figure is a front view, is the state that removes operation control room cabinet door, and B figure is the cutaway view of A figure.This transformer switch combination unit is mainly by delayed type fuse 1, expulsion-fuse 2, three-phase five-limb transformer body 3, on-load switch 16, transformer-cabinet 4 and operation control room casing 5 are formed, delayed type fuse 1, expulsion-fuse 2, three-phase five-limb transformer body 3 and on-load switch 16 are installed in the casing 4, be filled with transformer oil 6 in the transformer-cabinet 4, expulsion-fuse 2 is plug-in types, it inserts port and is installed on the front tank wall of transformer-cabinet 4, operation control room casing 5 is installed in the front of transformer-cabinet 4, on the front tank wall of transformer-cabinet 4, high pressure inlet wire cable socket 7 also is housed, high pressure inlet wire cable plug 8, high potential cable termination shelf 9, low-voltage cable socket 10, and divide pull-switch 11, oil pressure gauge 12, oil temperature gauge 13, oil level indicator 14 and pressure relieving valve 15.
Transformer switch combination unit when work, when power supply network is short-circuited, or fault such as single-phase, two-phase ground connection, when producing big electric current, expulsion-fuse in the transformer switch combination unit opens circuit, and prevents that big electric current from damaging transformer switch combination unit, thereby also prevents to damage subscriber equipment; When faults such as transformer generation layer short circuit, minor insulation damage, the delayed type fuse opens circuit, and cuts off the load of transformer switch combination unit, thereby has protected the safety of power supply network and subscriber equipment.
Embodiment 2
Fig. 2 has represented second kind of structural representation of transformer switch combination unit, this transformer switch combination unit is mainly by delayed type fuse 1, expulsion-fuse 2, three-phase five-limb transformer body 3, on-load switch 16, transformation casing 4 and casing 17 are formed, delayed type fuse 1, expulsion-fuse 2, on-load switch 16 is installed in the casing 17, be filled with sulfur hexafluoride gas in the casing 17, casing 17 is installed in the outside of the preceding tank wall of transformer-cabinet 4, three-phase and five-pole transformer body 3 is installed in the transformer-cabinet 4, be filled with transformer oil 6 in the transformation casing 4, what label 11 was represented is the branch pull-switch.
Embodiment 3
Fig. 3 has represented the third structural representation of transformer switch combination unit, this transformer switch combination unit is mainly by delayed type fuse 1, expulsion-fuse 2, dry type three-phase five-limb transformer body 22, on-load switch 16, casing 17 and support 18 are formed, delayed type fuse 1, expulsion-fuse 2 and on-load switch 16 are contained in the casing 17, be filled with silicone oil in the casing 17, casing 17 is installed on the support 18, and dry type three-phase five-limb transformer body 22 also is installed on the support 18.
Embodiment 4
Fig. 4 is a kind of circuit theory diagrams of transformer switch combination unit, number in the figure 1 expression delayed type fuse, label 2 expression expulsion-fuses, label 19 indication transformer first siding rings, label 20 indication transformer iron cores, label 21 indication transformer second siding rings, label 16 expression on-load switches.
A figure expression transformer first siding ring is a delta connection among the figure, and three groups of fuses are connected on the input of triangle contact respectively; B figure expression transformer first siding ring is a delta connection, and three expulsion-fuses are connected on the input of triangle contact respectively, and three delayed type fuses are connected in the coil respectively, and are connected on the head end position of coil; The content of C figure expression is close with B figure, and difference is that the delayed type fuse is connected on the terminal position of coil; D figure expression transformer first siding ring is a delta connection, and three groups of fuses are connected in the coil respectively, and are connected on the head end position of coil; The content of E figure expression is close with D figure, and difference is that three groups of fuses are connected on the terminal position of coil; The content of F figure expression is close with D figure, and difference is that delayed type fuse and expulsion-fuse are connected on respectively on the head end and terminal position of coil; Transformer first siding ring among G figure, H figure and the I figure is all Y connection, three groups of fuses of G figure expression are connected on the head end position of coil respectively, three groups of fuses of H figure expression are connected on respectively on the terminal position of coil, and I figure expression delayed type fuse and expulsion-fuse are connected on respectively on the head end and terminal position of coil; Content of representing among J figure, K figure and the L figure and G figure, H figure and I scheme close, and difference is that the transformer first siding ring is a Yo shape connection.
On-load switch 16 is connected on the input of each circuit.
Embodiment 5
Fig. 5 has represented the circuit theory diagrams of another kind of transformer switch combination unit, number in the figure 1 expression delayed type fuse, label 2 expression expulsion-fuses, label 16 expression on-load switches, label 19 indication transformer first siding rings, label 20 indication transformer iron cores, label 21 indication transformer second siding rings.
The first siding ring of transformer all is a delta connection among Fig. 5, and wherein A figure expression delayed type fuse 1 only is connected on the input of two triangle contacts; B figure, C figure, D figure, E figure and F figure have represented that delayed type fuse 1 only is connected in two coils, are the head ends that is connected on coil among B figure and the D figure, are the ends that is connected on coil among C figure, E figure and the F figure.
Claims (12)
1. transformer switch combination unit, it is characterized in that: form by delayed type fuse, expulsion-fuse, on-load switch and box three-phase five-limb transformer, delayed type fuse, expulsion-fuse and on-load switch are installed in the casing of transformer, and on-load switch, delayed type fuse and expulsion-fuse are connected with the first siding ring of transformer.
2. transformer switch combination unit according to claim 1 is characterized in that: be oil-filled in the casing of transformer or fill sulphur hexafluoride.
3. transformer switch combination unit according to claim 1, it is characterized in that: delayed type fuse, expulsion-fuse and on-load switch are installed in the additional casing, in this additional casing is oil-filled, or fill sulphur hexafluoride, or vacuum, this additional casing is installed in outside the casing of transformer.
4. transformer switch combination unit, it is characterized in that: form by additional casing that delayed type fuse, expulsion-fuse and on-load switch are housed and dry type three-phase five-limb transformer, the additional casing that delayed type fuse, expulsion-fuse and on-load switch are housed is installed on the support of dry-type transformer, and on-load switch, delayed type fuse and expulsion-fuse are connected with the transformer first siding ring.
5. according to claim 1 or 4 described transformer switch combination units, it is characterized in that: the first siding ring of three-phase five-limb transformer is a delta connection, three groups of fuses, form by a delayed type fuse and an expulsion-fuse for every group, be connected on the input of triangle contact respectively.
6. transformer switch combination unit according to claim 5 is characterized in that: have one group an expulsion-fuse can only be arranged in three groups of fuses.
7. according to claim 1 or 4 described transformer switch combination units, it is characterized in that: the first siding ring of three-phase five-limb transformer is a delta connection, three delayed type fuses or three expulsion-fuses are connected on the input of triangle contact respectively, three expulsion-fuses or three delayed type fuses are connected on respectively in three coils, are connected on head end or end in the coil.
8. transformer switch combination unit according to claim 7, it is characterized in that: when three delayed type fuses are connected on the input of triangle contact or be connected in three coils, can also be only at the input of two triangle contacts or only in two coils, be in series with delay-action fuse.
9. according to claim 1 or 4 described transformer switch combination units, it is characterized in that: the first siding ring of three-phase five-limb transformer is a delta connection, three groups of fuses, form by a delayed type fuse and an expulsion-fuse for every group, be connected on respectively in three coils, one group of fuse is connected on the head end of a coil, or is connected on the end of a coil, or delayed type fuse and expulsion-fuse are connected on the head end and the end of a coil respectively.
10. transformer switch combination unit according to claim 9 is characterized in that: have one group an expulsion-fuse can only be arranged in three groups of fuses.
11. according to claim 1 or 4 described transformer switch combination units, it is characterized in that: the first siding ring of three-phase five-limb transformer is a Y connection, three groups of fuses, form by a delayed type fuse and an expulsion-fuse for every group, be connected on respectively in three coils, one group of fuse is connected on the head end of a coil, or is connected on the end of a coil, or delayed type fuse and expulsion-fuse are connected on the head end and the end of a coil respectively.
12. transformer switch combination unit according to claim 11 is characterized in that: the first siding ring of three-phase five-limb transformer is Y
oThe shape connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118938A CN1058804C (en) | 1997-10-05 | 1997-10-05 | Transformer switch combination unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118938A CN1058804C (en) | 1997-10-05 | 1997-10-05 | Transformer switch combination unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1191375A CN1191375A (en) | 1998-08-26 |
| CN1058804C true CN1058804C (en) | 2000-11-22 |
Family
ID=5175077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97118938A Expired - Fee Related CN1058804C (en) | 1997-10-05 | 1997-10-05 | Transformer switch combination unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058804C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205267U (en) * | 1985-12-07 | 1986-08-13 | 北京煤炭工业学校矿用设备厂 | Integrated protector for lighting and signal in 127v for under coal mine |
| CN87207791U (en) * | 1987-05-06 | 1988-06-01 | 长春市节能电器设备厂 | 10 kv self-protected self-compensating combined single-phase transformer |
-
1997
- 1997-10-05 CN CN97118938A patent/CN1058804C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205267U (en) * | 1985-12-07 | 1986-08-13 | 北京煤炭工业学校矿用设备厂 | Integrated protector for lighting and signal in 127v for under coal mine |
| CN87207791U (en) * | 1987-05-06 | 1988-06-01 | 长春市节能电器设备厂 | 10 kv self-protected self-compensating combined single-phase transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1191375A (en) | 1998-08-26 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |