CN1058813C - Transformer switch combination unit - Google Patents
Transformer switch combination unit Download PDFInfo
- Publication number
- CN1058813C CN1058813C CN97118937A CN97118937A CN1058813C CN 1058813 C CN1058813 C CN 1058813C CN 97118937 A CN97118937 A CN 97118937A CN 97118937 A CN97118937 A CN 97118937A CN 1058813 C CN1058813 C CN 1058813C
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- transformer
- fuse
- combination unit
- expulsion
- switch combination
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Abstract
The present invention discloses a transformer switch assembly device which belongs to the technical field of power transformation and distribution of electric power. The transformer switch assembly device is composed of a load switch, a time delay type fuse, an impact type fuse, a low voltage circuit breaker, a bimetallic strip sensor and a transformer connected in series, wherein the load switch, the time delay type fuse, the impact type fuse and the low voltage circuit breaker are arranged in a box body of the transformer. The transformer switch assembly device can be used for preventing power supply failures generated by impact current, power supply with phase loss, and failures of the transformer. The present invention has the advantages of user equipment protection, safety, reliability, small volume and high efficiency. The present invention is suitable for being used as a terminal power distribution and transmission device connected with a user for a power supply network.
Description
The present invention relates to a kind of transformer switch combination unit, belong to electric power power transformation, distribution technique field.
At present, the distribution power transmitting device in China's power supply network mainly contains two kinds of mounting meanss, and a kind of mode is the independent respectively installation of high voltage switchgear, low voltage switchgear and three kinds of equipment of transformer, with lead they is linked up, and forms power transformation, distribution system; The second way is that above-mentioned three kinds of equipment are installed in the Big Iron, forms box-type substation, and these two kinds of mounting meanss all exist volume big, and it is many to take up room, cost height, the defective that maintenance is inconvenient.A kind of box-type substation of the U.S., be that high voltage switchgear, delayed type fuse, expulsion-fuse are contained in the transformer-cabinet, is furnished with low voltage switchgear in the transformer outside, this box-type substation is fit to the power supply network of the neutral ground of the U.S., but when using in Chinese power supply network, when phase-deficient operation, other phase voltage can change, influence power supply quality, can damage subscriber equipment when serious.
The objective of the invention is to design a kind of transformer switch combination unit, be adapted at the power supply network operation down of China, safe and reliable, volume is little, efficient is high.
The transformer switch combination unit of the present invention's design is made up of delayed type fuse, expulsion-fuse, low-voltage circuit breaker, bimetal leaf transducer and box type transformer, delayed type fuse, expulsion-fuse, low-voltage circuit breaker and bimetal leaf transducer are installed in the casing of transformer, delayed type fuse and expulsion-fuse are connected with the first siding ring of transformer, and low-voltage circuit breaker, bimetal leaf transducer are connected with the second siding ring of transformer.
In the casing of transformer or oil-filled or fill sulphur hexafluoride.The oil that is filled in the casing can be oil such as transformer oil, silicone oil.
Delayed type fuse and expulsion-fuse can also be installed in the additional casing in addition, and this additional casing is interior or oil-filled or that fill sulphur hexafluoride or vacuum, and this additional casing is installed in outside the casing of transformer.The oil that is filled in the additional casing can be oil such as transformer oil, silicone oil.
Low-voltage circuit breaker and bimetal leaf transducer have the containment vessel body, protection can be oil-filled in the housing or fill sulphur hexafluoride or vacuum, the low-voltage circuit breaker and the bimetal leaf transducer of band protection housing are installed in outside the casing of transformer.The oil that is filled in the protection housing can be oil such as transformer oil, silicone oil.
The transformer switch combination unit of the present invention design is made up of the low-voltage circuit breaker of the additional casing that delayed type fuse and expulsion-fuse are housed, band protection housing and bimetal leaf transducer and dry-type transformer, be equipped with delayed type fuse and expulsion-fuse additional casing, have low-voltage circuit breaker and the bimetal leaf transducer of protecting housing and be installed on the support of dry-type transformer; Additional casing can also be merged into a shared casing with the protection housing, and delayed type fuse, expulsion-fuse, low-voltage circuit breaker and bimetal leaf transducer are installed in the shared casing, and this shared casing is installed on the support of dry-type transformer; Delayed type fuse and expulsion-fuse are connected with the first siding ring of transformer, and low-voltage circuit breaker and bimetal leaf transducer are connected with the second siding ring of transformer.
Transformer or three-phase three-limb, or three-phase five-limb.
Input at transformer switch combination unit is in series with on-load switch, and on-load switch is installed in the casing of transformer, or is installed in outside the casing, or is installed on the support of dry-type transformer.
On-load switch is installed in the additional casing that delayed type fuse and expulsion-fuse are housed, or is installed in the shared casing.
The transformer switch combination unit of the present invention's design also has warning device.
Low tension gauge table, distribution switchgear and the output of multichannel low pressure are installed behind the low-voltage circuit breaker.
The first siding ring of 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 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.
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 the delayed type fuse.
The first siding ring of 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 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 transformer is Y
oThe shape connection, the series system of three groups of fuses in coil is identical when being Y connection with the first siding ring of transformer.
The present invention has adopted the working method of delayed type fuse, expulsion-fuse, low-voltage circuit breaker, bimetal leaf transducer and transformer series connection on circuit, bimetal leaf sensor monitors oil temperature, other is furnished with warning device and reminds operating personnel to note, structurally adopt electrical devices such as oil fuse, low-voltage circuit breaker and transformer, or adopt the electrical device that fills sulphur hexafluoride, thereby this transformer switch combination unit has following advantage:
1. on the first siding ring of transformer, be in series with expulsion-fuse; when power supply network generation phase fault; during faults such as single-phase, two-phase ground connection; expulsion-fuse opens circuit; transformer switch combination unit and power supply network fault are separated; the protection transformer switch combination unit, thus subscriber equipment protected.
2. when in three-phase five-limb transformer first siding ring, being in series with one or two delayed type fuse; when causing the power supply of single-phase or two-phase to transformer switch combination unit by the power supply network fault; serious variation can not take place in the voltage of the power supply phase in the transformer switch combination unit, thereby has protected subscriber equipment.
3. when overload or other fault take place in the secondary side of transformer; be connected on the low-voltage circuit breaker action of secondary side; the circuit that cut-out is broken down connects with transformer switch combination unit, prevents that external fault from damaging transformer switch combination unit, thereby has also protected other subscriber equipment.
4. when transformer generation turn-to-turn, interlayer fault, produce big electric current, make the low-voltage circuit breaker action, cut off load, make transformer switch combination unit be in Light Condition, protected subscriber equipment.
5. the bimetal leaf transducer is placed in the oil tank of transformer; and link with low-voltage circuit breaker; when making the transformer oil temperature rise because of transformer fault or other fault; bimetal leaf transducer and low-voltage circuit breaker teamwork; cut off load; protected transformer switch combination unit, the accident that prevents is damaged subscriber equipment.
6. have warning device in the transformer switch combination unit, when transformer switch combination unit broke down, warning device can send alarm signal, reminded operating personnel to note.
7. produce fault when transformer self, and above-mentioned expulsion-fuse or low-voltage circuit breaker are failure to actuate or when slow in one's movements, the delayed type fuse opens circuit, the connection of cutting off the electricity supply and loading, the protection subscriber equipment does not damage.Delayed type fuse and low-voltage circuit breaker form duplicate protection.
8. owing to adopted the devices such as delayed type fuse, expulsion-fuse, low-voltage circuit breaker of on-load switch, oil immersed type, and be installed in the casing of transformer, so the volume of transformer switch combination unit is little, occupy little space, because of having shortened the connection circuit, the efficient height of transformer switch combination unit.
9. transformer switch combination unit has multiple circuit to connect form and installation form, can adapt to different operational environment requirements.
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 the structural representation of the 4th kind of transformer switch combination unit.
Fig. 5 is the circuit theory diagrams of transformer switch combination unit.
Fig. 6 is the circuit theory diagrams of another kind of transformer switch combination unit.
Fig. 7 is the circuit theory diagrams of the third transformer switch combination unit.
Below in conjunction with drawings and Examples transformer switch combination unit is elaborated.
Fig. 1 is 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 a cutaway view.
Transformer switch combination unit is mainly by delayed type fuse 1, expulsion-fuse 2, low-voltage circuit breaker 3, bimetal leaf transducer 21 and transformer 4 are formed, delayed type fuse 1, expulsion-fuse 2, low-voltage circuit breaker 3, bimetal leaf transducer 21 and transformer 4 all are installed in the casing 5, be filled with transformer oil 6 in the casing 5, operation control room casing 7 is arranged before the casing 5, high pressure inlet wire cable socket 8 is housed on the antetheca of casing 5, high pressure inlet wire cable plug 9, with high potential cable termination shelf 10, oil temperature gauge 11 also is housed, oil pressure gauge 12, oil level indicator 13, pressure relieving valve 14, divide pull-switch 15 and low pressure accessory power outlet 16.
Transformer switch combination unit when work, do the time spent as impulse current, expulsion-fuse opens circuit, the be not hit damage of electric current of protection transformer switch combination unit; When transformer breaks down, or during overload, the delayed type fuse opens circuit, protection transformer switch combination unit and subscriber equipment safety.When overload or low-pressure side fault, transformer switch combination unit and load are cut off in the low-voltage circuit breaker action, protection subscriber equipment and transformer switch combination unit.The effect of bimetal leaf transducer 21 is monitoring oil temperature, and when transformer 4 breaks down, or during overload, oily temperature rise is during to design temperature, and bimetal leaf transducer 21 and low-voltage circuit breaker 3 actions cut off load, the protection subscriber equipment.
Fig. 2 is the structural representation of second kind of transformer switch combination unit.
Transformer switch combination unit mainly is made up of delayed type fuse 1, expulsion-fuse 2, low-voltage circuit breaker 3, bimetal leaf transducer 21 and dry-type transformer 27, delayed type fuse 1, expulsion-fuse 2, low-voltage circuit breaker 3 and bimetal leaf transducer 21 are installed in the casing 17, be filled with silicone oil 18 in the casing 17, dry-type transformer 27 and casing 17 are installed on the support 19, and on-load switch 20 also is installed in the casing 17.
Fig. 3 is the structural representation of the third 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 a cutaway view.
The structure of transformer switch combination unit is close among the transformer switch combination unit structure of present embodiment and the embodiment 1, difference is to have increased on-load switch 20, it also is installed in the casing 5, and the effect of on-load switch 20 is transformer switch combination unit is engaged with power supply network or to disconnect.
Also have warning device in the present embodiment, what label 25 was represented is alarm lamp.
Embodiment 4
Fig. 4 is the structural representation of the 4th kind 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.
The transformer switch combination unit structure of present embodiment is close with the transformer switch combination unit structure among the embodiment 3, difference is that the meritorious and varmeter scale 28 of low pressure also is installed after the low-voltage circuit breaker 3 of transformer switch combination unit, change over switch 29, low voltage voltage ammeter 30, low pressure output master switch 31 and 6 tunnel low pressure output switch 32, they can measure the low-voltage power supply of transformer switch combination unit, control, distribute, and make power supply meet user's request.
Embodiment 5
Fig. 5 is the circuit theory diagrams of transformer switch combination unit, number in the figure 1 expression delayed type fuse, label 2 expression expulsion-fuses, label 3 expression low-voltage circuit breakers, label 21 expression bimetal leaf transducers, label 22 indication transformer first siding rings, label 23 indication transformer iron cores, label 24 indication transformer second siding rings.
The input that A figure expression delayed type fuse among Fig. 5 and expulsion-fuse are connected on the triangle contact of transformer first siding ring; B figure and C figure expression expulsion-fuse are connected on the input of triangle contact, and the delayed type fuse is connected on the head end or the end of coil; D figure, E figure and F figure expression delayed type fuse and expulsion-fuse are connected in the transformer first siding ring, first siding ring is a delta connection, delayed type fuse and expulsion-fuse are connected on the head end or the end of coil, or are connected on the head end and the end of coil respectively; Figure G, figure H and figure I indication transformer first siding ring are Y connection, and delayed type fuse and expulsion-fuse are connected in the coil, and they are connected on the head end or the end of coil, or are connected on the head end and the end of coil respectively; Figure J, figure K and figure L indication transformer first siding ring are Y
oThe shape connection, it is identical that delayed type fuse and the series connection method of expulsion-fuse in first siding ring and figure G, figure H and figure I represent.
All be in series with low-voltage circuit breaker 3 and bimetal leaf transducer 21 behind the transformer secondary lateral coil among above-mentioned each figure.Bimetal leaf transducer 21 can be monitored temperature of oil in transformer, and when oily temperature reached set point, load was cut off in bimetal leaf transducer and low-voltage circuit breaker teamwork.
Embodiment 6
Fig. 6 is the another 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 3 expression low-voltage circuit breakers, label 20 expression on-load switches, label 21 expression bimetal leaf transducers, label 22 indication transformer first siding rings, label 23 indication transformer iron cores, label 24 indication transformer second siding rings, the alarm lamp in the label 25 expression warning circuits, the switch of label 26 expression warning circuits.
Circuit theory diagrams among circuit theory diagrams that present embodiment is represented and the embodiment 5 are close, and difference is to have on-load switch and warning circuit.The effect of on-load switch is that transformer switch combination unit can be engaged with power supply network or disconnect.
Embodiment 7
Fig. 7 has represented the circuit theory diagrams of the third transformer switch combination unit, number in the figure 1 expression delayed type fuse, label 2 expression expulsion-fuses, label 3 expression low-voltage circuit breakers, label 21 expression bimetal leaf transducers, label 22 indication transformer first siding rings, label 23 indication transformer iron cores, label 24 indication transformer second siding rings.
The first siding ring of transformer all is a delta connection among Fig. 7, and wherein A figure expression delayed type fuse only is connected on the input of two triangle contacts; B figure, C figure, D figure, E figure and F figure expression delayed type fuse only are 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 (18)
1. transformer switch combination unit, it is characterized in that: form by delayed type fuse, expulsion-fuse, low-voltage circuit breaker, bimetal leaf transducer and box type transformer, delayed type fuse, expulsion-fuse, low-voltage circuit breaker and bimetal leaf transducer are installed in the casing of transformer, delayed type fuse and expulsion-fuse are connected with the first siding ring of transformer, and low-voltage circuit breaker, bimetal leaf transducer are connected with the second siding ring of transformer.
2. transformer switch combination unit according to claim 1 is characterized in that: in the casing of transformer or oil-filled or fill sulphur hexafluoride.
3. transformer switch combination unit according to claim 1, it is characterized in that, delayed type fuse and expulsion-fuse 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.
4. transformer switch combination unit according to claim 1; it is characterized in that: low-voltage circuit breaker and bimetal leaf transducer have the containment vessel body; protection can be oil-filled in the housing or fill sulphur hexafluoride or vacuum, the low-voltage circuit breaker and the bimetal leaf transducer of band protection housing are installed in outside the casing of transformer.
5. transformer switch combination unit, it is characterized in that: form by the low-voltage circuit breaker of the additional casing that delayed type fuse and expulsion-fuse are housed, band protection housing and bimetal leaf transducer and dry-type transformer, be equipped with delayed type fuse and expulsion-fuse additional casing, have low-voltage circuit breaker and the bimetal leaf transducer of protecting housing and be installed on the support of dry-type transformer; Additional casing can also be merged into a shared casing with the protection housing, and delayed type fuse, expulsion-fuse, low-voltage circuit breaker and bimetal leaf transducer are installed in the shared casing, and this shared casing is installed on the support of dry-type transformer; Delayed type fuse and expulsion-fuse are connected with the first siding ring of transformer, and low-voltage circuit breaker and bimetal leaf transducer are connected with the second siding ring of transformer.
6. transformer switch combination unit according to claim 1 or 5 is characterized in that, transformer or three-phase three-limb, or three-phase five-limb.
7, transformer switch combination unit according to claim 1 or 5, it is characterized in that: the input at transformer switch combination unit is in series with on-load switch, and on-load switch is installed in the casing of transformer, or be installed in outside the casing, or be installed on the support of formula transformer.
8. transformer switch combination unit according to claim 3 is characterized in that: on-load switch is installed in the additional casing that delayed type fuse and expulsion-fuse are housed, or is installed in the shared casing.
9. transformer switch combination unit according to claim 1 or 5 is characterized in that: have warning device.
10. transformer switch combination unit according to claim 1 or 5 is characterized in that: low tension gauge table, distribution switchgear and the output of multichannel low pressure are installed behind the low-voltage circuit breaker.
11. transformer switch combination unit according to claim 1 or 5, it is characterized in that: the first siding ring of transformer is a delta connection, 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.
12. transformer switch combination unit according to claim 11 is characterized in that: have one group in three groups of fuses an expulsion-fuse can only be arranged.
13. transformer switch combination unit according to claim 1 or 5, it is characterized in that: the first siding ring of 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.
14. transformer switch combination unit according to claim 13, 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 the delayed type fuse.
15. transformer switch combination unit according to claim 1 or 5, it is characterized in that: the first siding ring of 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.
16. transformer switch combination unit according to claim 15 is characterized in that: have one group in three groups of fuses an expulsion-fuse can only be arranged.
17. transformer switch combination unit according to claim 1 or 5, it is characterized in that: the first siding ring of 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.
18. transformer switch combination unit according to claim 17 is characterized in that: the first siding ring of transformer is Y
oThe shape connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118937A CN1058813C (en) | 1997-10-05 | 1997-10-05 | Transformer switch combination unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118937A CN1058813C (en) | 1997-10-05 | 1997-10-05 | Transformer switch combination unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1191403A CN1191403A (en) | 1998-08-26 |
| CN1058813C true CN1058813C (en) | 2000-11-22 |
Family
ID=5175076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97118937A Expired - Fee Related CN1058813C (en) | 1997-10-05 | 1997-10-05 | Transformer switch combination unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058813C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571698B (en) * | 2019-10-15 | 2024-03-19 | 国网安徽省电力有限公司阜阳供电公司 | Ring main unit based on high-voltage measurement |
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 CN97118937A patent/CN1058813C/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 |
|---|---|
| CN1191403A (en) | 1998-08-26 |
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