CN102842862A - Prefabricated transformer station - Google Patents
Prefabricated transformer station Download PDFInfo
- Publication number
- CN102842862A CN102842862A CN2012103377212A CN201210337721A CN102842862A CN 102842862 A CN102842862 A CN 102842862A CN 2012103377212 A CN2012103377212 A CN 2012103377212A CN 201210337721 A CN201210337721 A CN 201210337721A CN 102842862 A CN102842862 A CN 102842862A
- 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.)
- Pending
Links
Images
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention 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 percent 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 present invention relates to a kind of transformer station, the preassembled transformer station of particularly 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 from 20th century the mid-1970s develop into phase late 1990s, 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 electric pressure is in the world 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.The on average about 60～70kW/km of rural area power load density
2, county's hundreds of sq-km, during with 10 kV line powerings owing to receive the restriction of radius of electricity supply, will build 10 surplus 35 kV transformer stations, except that cost great amount of investment and occupation of land, when every year, only the main transformer loss just had gigawatt more than.
(2) net decreases greatly, 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 low excessively, and the long-term underrun of 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 appearance is carried 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 last level power supply all very difficult.
Summary of the invention
The preassembled transformer station that the purpose of this invention is to provide a kind of high pressure 20KV low pressure 0.4KV.
The technical solution that realizes the object of the invention 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, said 0.4kV low-voltage distribution chamber installing low-voltage reactive compensator capable, and the compensation capacity of said reactive power compensator is 40% of a transformer capacity.
The invention has the beneficial effects as follows: 20 kV distribution systems are not only the raising of electric pressure with respect to 10 kV distribution systems, and more crucial is the lifting at double of electric network transportation ability and the expansion that electrical network is carried radius.When carrying same capability, the grade of voltage is high more, and the required sectional area of lead is more little, thereby has reduced the investment of circuit in a large number.
Description of drawings
Fig. 1 is the structure diagram of the preassembled transformer station of a kind of high pressure 20KV of the present invention low pressure 0.4KV.
Fig. 2 is the internal structure sketch map of the preassembled transformer station of a kind of high pressure 20KV of the present invention low pressure 0.4KV.
Fig. 3 is outlet and the structural representation of metering cabinet of the preassembled transformer station of a kind of high pressure 20KV of the present invention low pressure 0.4KV.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present invention is further described.
Described preassembled transformer station of the present invention is made up 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 outside the casing of cement plate structure, sticking 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 box 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 is cut off by dividing plate 4 with 0.4kV low-voltage distribution chamber 3, and transformer room 2 adopts natural draft and is provided with temperature measuring equipment, can survey the room temperature and 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, and simultaneously, step-down transformer 6 selects for use 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 unrestricted, not only can be used for looped network, but also can be used for the terminal neutral current; 0.4kV low-voltage distribution chamber 3 is made up of capacitor box 7 and outlet and metering cabinet 8; The low-voltage reactive compensator capable 9 (the present invention adopts capacitor) of three parallel connections is set in the capacitor box 7; Condenser capacity is 40% of a transformer, to realize compensating power, improve the quality of power supply, to reduce the wastage, provide simultaneously the distribution service data; Capacitor is an operating passing zero; Outlet and metering cabinet 8 by metering system 10 with go out wire system 11 and form, it goes out terminal use's instructions for use that wire system 11 is provided with subsidiary loop 12 realization 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 said 0.4kV low-voltage distribution chamber (3) installing low-voltage reactive compensator capable, the compensation capacity of said reactive power compensator is 40% of a transformer capacity.
2. according to the preassembled transformer station described in the claim 1, it is characterized in that described casing adopts the complex cement glass fiber material to make, outside the housing of cement plate structure, stick color tile, or the veneer picture carries out surface treatment.
3. according to the preassembled transformer station described in the 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 to be the serial box ring main unit of inflation, all insulation entirely of SF6 of arc-extinguishing medium with SF6 gas.
4. according to the preassembled transformer station described in the claim 1, it is characterized in that in described transformer room (2), being provided with step-down transformer (6), described transformer room (2) are adopted natural draft and are had temperature measuring equipment, survey transformer room temperature, oil temperature.
5. according to the preassembled transformer station described in claim 1 or 4, it is characterized in that described step-down transformer (6) selects for use DYN11 to connect group to suppress high order harmonic component stream.
6. according to the preassembled transformer station described in the claim 1, it is characterized in that said 0.4KV low-voltage distribution chamber (3) is made up of capacitor box (7) and outlet and metering cabinet (8).
7. according to the preassembled transformer station described in the claim 1, it is characterized in that said reactive power compensator (9) adopts capacitor, capacitor is an operating passing zero, has automatically and manually control dual mode concurrently.
8. according to the preassembled transformer station described in claim 1 or 6, it is characterized in that said outlet and metering cabinet (8) are by metering system (10) and go out wire system (11) and form.
9. according to the preassembled transformer station described in the claim 9, it is characterized in that said metering system (10) measures two parts by dynamic measurement and illumination and forms, said metering system (10) is arranged on before step-down transformer (6) service entrance switch.
10. according to the preassembled transformer station described in the claim 1, it is characterized in that said 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 |
|---|---|---|---|
| CN2012103377212A CN102842862A (en) | 2012-09-13 | 2012-09-13 | Prefabricated transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103377212A CN102842862A (en) | 2012-09-13 | 2012-09-13 | Prefabricated transformer station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102842862A true CN102842862A (en) | 2012-12-26 |
Family
ID=47370006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103377212A Pending CN102842862A (en) | 2012-09-13 | 2012-09-13 | Prefabricated transformer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102842862A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401167A (en) * | 2013-07-26 | 2013-11-20 | 泰豪科技(深圳)电力技术有限公司 | Box type transformer substation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426308A (en) * | 1990-05-21 | 1992-01-29 | Nissin Electric Co Ltd | Small capacity distribution substation tower |
| CN201528142U (en) * | 2009-09-30 | 2010-07-14 | 吉林省金冠电气股份有限公司 | Combined box substation provided with transformer chassis truck |
| CN201758248U (en) * | 2010-08-24 | 2011-03-09 | 北京清畅电力技术股份有限公司 | 24kV box transformer substation |
| CN201813091U (en) * | 2010-08-02 | 2011-04-27 | 杭州电力设备制造有限公司 | Single-phase preassembled box type transformer substation |
| CN202797707U (en) * | 2012-09-13 | 2013-03-13 | 连云港市港圣开关制造有限公司 | Prefabricated transformer station |
-
2012
- 2012-09-13 CN CN2012103377212A patent/CN102842862A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426308A (en) * | 1990-05-21 | 1992-01-29 | Nissin Electric Co Ltd | Small capacity distribution substation tower |
| CN201528142U (en) * | 2009-09-30 | 2010-07-14 | 吉林省金冠电气股份有限公司 | Combined box substation provided with transformer chassis truck |
| CN201813091U (en) * | 2010-08-02 | 2011-04-27 | 杭州电力设备制造有限公司 | Single-phase preassembled box type transformer substation |
| CN201758248U (en) * | 2010-08-24 | 2011-03-09 | 北京清畅电力技术股份有限公司 | 24kV box transformer substation |
| CN202797707U (en) * | 2012-09-13 | 2013-03-13 | 连云港市港圣开关制造有限公司 | Prefabricated transformer station |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401167A (en) * | 2013-07-26 | 2013-11-20 | 泰豪科技(深圳)电力技术有限公司 | Box type transformer substation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101794973A (en) | Live working method for replacing distribution transformer | |
| CN108736360A (en) | A kind of integration loaded capacity regulating voltage regulating power distribution station | |
| CN202839279U (en) | Three-phase three-winding traction and power hybrid transformer | |
| CN202797707U (en) | Prefabricated transformer station | |
| CN207637603U (en) | A kind of automatic capacity transfer type distribution transformer | |
| CN203491694U (en) | Wind field booster system main transformer | |
| CN101013798A (en) | Energy-saving single-phase inserted transformation device | |
| CN102842862A (en) | Prefabricated transformer station | |
| CN203338934U (en) | 66kV grounding transformer with power distribution output for station | |
| CN102420043B (en) | Single-phase high-impedance auto-transformer | |
| CN106099916B (en) | A kind of method that 110kV substation load transfer scheme quickly determines | |
| CN202026016U (en) | Full-automatic control box type substation for energy-saving street lamps | |
| CN205943688U (en) | Rectifier transformer is pull to many windings dry -type | |
| CN201699327U (en) | Transformer-substation main wiring system based on single busbar section | |
| CN209692629U (en) | A kind of arragement construction of extra-high voltage large capacity flexible direct current converter station starting-up later time | |
| CN204732270U (en) | A kind of buried six phase 12 pulse wave rectifier transformers | |
| CN203746639U (en) | Line-terminal on-load voltage regulating single-phase 220kV high-impedance transformer | |
| CN204760838U (en) | It holds low intelligent combination formula transformer substation of decreasing to have to carry to transfer | |
| CN203180458U (en) | Self-powered ice-melting electric reactor | |
| CN203444935U (en) | Direct distribution type distribution transformer | |
| CN202332523U (en) | Combined type transformer for wind power generation on water | |
| CN202840928U (en) | Isolation type anti-interference power secondary system | |
| CN103490497B (en) | Duplicate supply two volume step-down secondary voltage regulating rectifier transformer group of different electric pressure | |
| CN203150372U (en) | Voltage transformer with serial-parallel output function | |
| CN204145339U (en) | A kind of compensation self coupling soft starter device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121226 |