CN202797707U - Prefabricated transformer station - Google Patents
Prefabricated transformer station Download PDFInfo
- Publication number
- CN202797707U CN202797707U CN201220465430.7U CN201220465430U CN202797707U CN 202797707 U CN202797707 U CN 202797707U CN 201220465430 U CN201220465430 U CN 201220465430U CN 202797707 U CN202797707 U CN 202797707U
- Authority
- CN
- China
- Prior art keywords
- transformer
- voltage
- transformer station
- room
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to a prefabricated transformer station with high voltage of 20 KV and low voltage of 0.4 KV. The prefabricated transformer station comprises a box body, wherein a 0.4 kV low-voltage distribution room and a 20 kV high-voltage switch room are arranged in the box body; a transformer room is arranged between the 0.4 kV low-voltage distribution room and the 20 kV high-voltage switch room; the 20 kV high-voltage switch room is arranged on one side of the transformer room; the 0.4 kV low-voltage distribution room is provided with a low-voltage reactive power compensation device; and the compensation capacity of the reactive power compensation device is 40% of that of a transformer. Compared with a 10 kV distribution system, a 20 kV distribution system increases the voltage grade, multiplies the transmission capacity of a power network and enlarges the transmission radius of the power network. Under the condition of transmitting the same capacity, the higher the voltage grade is, the less the required section of a lead is, so that line investment is greatly reduced.
Description
Technical field
The utility model relates to a kind of transformer station, particularly the preassembled transformer station of a kind of high pressure 20KV low pressure 0.4KV.
Background technology
External medium voltage network has generally adopted 20 kV electric pressures.Paris, FRA develops into phase late 1990s from 20 century 70s mid-term, and 20kV power distribution network proportion rises to 98.5% by 42%.The 225/20/0.4 kV voltage series that Paris electrical network adopts is the series that present in the world electric pressure is simplified most, and the advantage of its reliability, economy and operational flexibility aspect is very outstanding.In addition, the 20kV electric pressure has all obtained application in a lot of countries such as Japan, Singapore, Britain, Germany, Italy at present.20 kV electric pressures have been listed IEC (International Electrotechnical Commission) standard in as the normal voltage of medium voltage distribution network.
Existing 10 kV distribution patterns exist many problems:
(1) 10 kV radius of electricity supply is not enough.10 kV line powering radiuses are 10-12 km when load density is 20-30 kw/km2, at 40 kW/km
2The time less than 8 km.Rural area power load density is about 60～70kW/km on average
2, county's hundreds of sq-km during with 10 kV line powering, owing to be subjected to the restriction of radius of electricity supply, will be built more than 10 35 kV transformer stations, except cost great amount of investment and occupation of land, whenever be only the main transformer loss when just gigawatt being arranged more than.
(2) network loss is large, and the quality of power supply is poor.Rural area 10 kV matching net wire loss rates are mostly more than 10% at present.The long terminal voltage that makes of circuit is excessively low, and the long-term underrun of network distribution transformer is increasing along with what load, can't guarantee power supply quality.
(3) power supply of high load capacity density is difficult to satisfy.10kV distribution network capacity-load ratio is lower, has had a strong impact on power supply reliability, must increase new power supply point.But because the limitation of high density load present position makes choosing of website, line route and upper level power supply all very difficult.
Summary of the invention
The purpose of this utility model provides the preassembled transformer station of a kind of high pressure 20KV low pressure 0.4KV.
The technical solution that realizes the utility model purpose is: the preassembled transformer station of a kind of high pressure 20KV low pressure 0.4KV, comprise casing, be provided with 0.4kV low-voltage distribution chamber, 20kV high-voltage switch gear chamber and transformer room in the described casing, between 0.4kV low-voltage distribution chamber and 20kV high-voltage switch gear chamber, be provided with the transformer room, described 20kV high-voltage switch gear chamber is located at a side of transformer room, described 0.4kV low-voltage distribution chamber installing low-voltage reactive compensator capable, the compensation capacity of described reactive power compensator is 40% of transformer capacity.
The beneficial effects of the utility model are: 20 kV distribution systems are not only the raising of electric pressure with respect to 10 kV distribution systems, and more crucial is the at double lifting of electric network transportation ability and the expansion that electrical network is carried radius.When carrying same capability, the grade of voltage is higher, and the required sectional area of wire is less, thereby has reduced in a large number the investment of circuit.
Description of drawings
Fig. 1 is the structure diagram of the preassembled transformer station of a kind of high pressure 20KV of the utility model low pressure 0.4KV.
Fig. 2 is the internal structure schematic diagram of the preassembled transformer station of a kind of high pressure 20KV of the utility model low pressure 0.4KV.
Fig. 3 is the outlet of preassembled transformer station of a kind of high pressure 20KV of the utility model low pressure 0.4KV and the structural representation of metering cabinet.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Described preassembled transformer station of the present utility model is comprised of 20kV high-voltage switch gear chamber 1, transformer room 2,0.4kV low-voltage distribution chamber 3, three Room all adopt the cement glass fiber material to make, and the methods such as color tile or veneer picture of sticking outside the casing of cement board structure are carried out surface treatment; 20kV high-voltage switch gear chamber 1 is arranged on a side of transformer room 2, and is provided with three ring main units 5, is the order font and arranges, and with cyclization operation and the load cutting that realizes electrical network, guarantees the validity of power supply; Ring main unit 5 adopts with the full inflation of SF6 series, the ring main unit of all insulation, can be easier to realize that three working positions (connection, disconnection and ground connection) and little electric current (inductance, electric capacity) cut-off, and have the automatic brake separating function.Transformer room 2 and 0.4kV low-voltage distribution chamber 3 are cut off by dividing plate 4, transformer room 2 adopts natural draft and is provided with temperature measuring equipment, can survey room temperature and the oil temperature of transformer room 2, be provided with step-down transformer 6 in the transformer room 2, used step-down transformer 6 adopts oil immersion-type distribution or dry-type power transformer, simultaneously, step-down transformer 6 selects DYN11 to connect group to suppress high order harmonic component stream, the high-voltage tap scope increased ± and 2 * 2.5%, avoided unidirectional ground short circuit fault, and the centering electric current is unrestricted, not only can be used for looped network, but also can be used for terminal; 0.4kV low-voltage distribution chamber 3 is comprised of capacitor box 7 and outlet and metering cabinet 8, low-voltage reactive compensator capable 9(the utility model that three parallel connections are set in the capacitor box 7 adopts capacitor), condenser capacity is 40% of transformer, to realize compensating power, improve the quality of power supply, to reduce the wastage, provide simultaneously the distribution service data; Capacitor is operating passing zero; Outlet and metering cabinet 8 by metering system 10 with go out wire system 11 and form, it goes out wire system 11 and is provided with terminal use's instructions for use that subsidiary loop 12 is realized 110V, 220V, 380V, has increased the extensibility of this transformer station; Metering system 10 is arranged on before transformer 6 service entrance switchs, and metering system 10 is divided into two kinds of metering methods of dynamic measurement and illumination metering.
Claims (10)
1. preassembled transformer station, comprise casing, be provided with 0.4kV low-voltage distribution chamber (3), 20kV high-voltage switch gear chamber (1) and transformer room (2) in the described casing, between 0.4kV low-voltage distribution chamber (3) and 20kV high-voltage switch gear chamber (1), be provided with transformer room (2), described 20kV high-voltage switch gear chamber (1) is located at a side of transformer room (2), it is characterized in that described 0.4kV low-voltage distribution chamber (3) installing low-voltage reactive compensator capable, the compensation capacity of described reactive power compensator is 40% of transformer capacity.
2. the preassembled transformer station described in according to claim 1 is characterized in that described casing adopts the complex cement glass fiber material to make, and sticks color tile outside the housing of cement board structure, or veneer is drawn and carried out surface treatment.
3. the preassembled transformer station described in according to claim 1, it is characterized in that described 20kV high-voltage switch gear chamber (1) is provided with three ring main units (5), be the order font and arrange, described ring main unit (5) is the full inflation of SF6 series take SF6 gas as arc-extinguishing medium, the ring main unit of all insulation.
4. the preassembled transformer station described in according to claim 1, it is characterized in that in described transformer room (2), arranging step-down transformer (6), described transformer room (2) adopts natural draft and has temperature measuring equipment, surveys transformer room temperature, oil temperature.
5. according to claim 1 or the preassembled transformer station described in 4, it is characterized in that described step-down transformer (6) selects DYN11 to connect group to suppress high order harmonic component stream.
6. the preassembled transformer station described in according to claim 1 is characterized in that described 0.4KV low-voltage distribution chamber (3) is comprised of capacitor box (7) and outlet and metering cabinet (8).
7. the preassembled transformer station described in according to claim 1 is characterized in that described reactive power compensator (9) adopts capacitor, and capacitor is operating passing zero, has concurrently automatically and manual control dual mode.
8. according to claim 1 or the preassembled transformer station described in 6, it is characterized in that described outlet and metering cabinet (8) by metering system (10) and go out wire system (11) forming.
9. the preassembled transformer station described in according to claim 9 is characterized in that described metering system (10) is comprised of dynamic measurement and illumination metering two parts, and described metering system (10) is arranged on before step-down transformer (6) service entrance switch.
10. the preassembled transformer station described in according to claim 1 is characterized in that described step-down transformer (6) adopts oil immersion-type distribution transformer or dry-type power transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220465430.7U CN202797707U (en) | 2012-09-13 | 2012-09-13 | Prefabricated transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220465430.7U CN202797707U (en) | 2012-09-13 | 2012-09-13 | Prefabricated transformer station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202797707U true CN202797707U (en) | 2013-03-13 |
Family
ID=47824890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220465430.7U Expired - Lifetime CN202797707U (en) | 2012-09-13 | 2012-09-13 | Prefabricated transformer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202797707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842862A (en) * | 2012-09-13 | 2012-12-26 | 连云港市港圣开关制造有限公司 | Prefabricated transformer station |
-
2012
- 2012-09-13 CN CN201220465430.7U patent/CN202797707U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842862A (en) * | 2012-09-13 | 2012-12-26 | 连云港市港圣开关制造有限公司 | Prefabricated transformer station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202839279U (en) | Three-phase three-winding traction and power hybrid transformer | |
| CN108736360A (en) | A kind of integration loaded capacity regulating voltage regulating power distribution station | |
| CN202797707U (en) | Prefabricated transformer station | |
| CN100570973C (en) | Energy-saving single-phase inserted transformation device | |
| CN207637603U (en) | A kind of automatic capacity transfer type distribution transformer | |
| CN203491694U (en) | Wind field booster system main transformer | |
| CN203338934U (en) | 66kV grounding transformer with power distribution output for station | |
| CN102842862A (en) | Prefabricated transformer station | |
| CN102420043B (en) | Single-phase high-impedance auto-transformer | |
| CN202026016U (en) | Full-automatic control box type substation for energy-saving street lamps | |
| CN201699327U (en) | Transformer-substation main wiring system based on single busbar section | |
| CN204732270U (en) | A kind of buried six phase 12 pulse wave rectifier transformers | |
| CN209692629U (en) | A kind of arragement construction of extra-high voltage large capacity flexible direct current converter station starting-up later time | |
| CN204760838U (en) | It holds low intelligent combination formula transformer substation of decreasing to have to carry to transfer | |
| CN203444935U (en) | Direct distribution type distribution transformer | |
| CN202840928U (en) | Isolation type anti-interference power secondary system | |
| CN202332523U (en) | Combined type transformer for wind power generation on water | |
| CN203746639U (en) | Line-terminal on-load voltage regulating single-phase 220kV high-impedance transformer | |
| CN102436918A (en) | Traction transformer for Scott wiring | |
| CN206657711U (en) | A kind of band 380V assists winding photovoltaic generation dry-type transformers | |
| CN206789962U (en) | A kind of integrated loaded capacity regulating voltage regulating power distribution station | |
| CN204464852U (en) | The automatically controlled integrated device of a kind of field joint stations | |
| CN201601407U (en) | Single-phase box-type transformer substation | |
| CN204189598U (en) | Integration oil-filled transformer | |
| CN103310960A (en) | 66-kilovolt power distribution output grounding transformer for coil station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |