CN101840772A - Gas insulating transformer - Google Patents
Gas insulating transformer Download PDFInfo
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- CN101840772A CN101840772A CN 201010123453 CN201010123453A CN101840772A CN 101840772 A CN101840772 A CN 101840772A CN 201010123453 CN201010123453 CN 201010123453 CN 201010123453 A CN201010123453 A CN 201010123453A CN 101840772 A CN101840772 A CN 101840772A
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- voltage winding
- pressure winding
- transformer
- gas
- high voltage
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Abstract
The invention discloses a gas insulating transformer, which is composed of a gas tank, an iron core, a low voltage winding, a high voltage winding and an insulating medium, wherein the iron core is arranged in the gas tank; the low voltage winding and the high voltage winding are both sheathed on the iron core, the high voltage winding is arranged on the outer side of the low voltage winding, and the low voltage winding and the high voltage winding are separated by insulating materials; the insulating medium is purely gaseous SF6; the high voltage winding adopts a tangled-continuous structure, and the surfaces of the conductors of the low voltage winding and the high voltage winding are insulated and made of PET materials. The invention has favorable safety performance and small floor space; compared with the traditional power transformer, the invention lowers no-load loss by 20%, lowers no-load current by 30%, and lowers load loss by 10%; and compared with the transformer with the same volume, the invention lowers yearly operation cost by about 15% averagely and saves cost for enterprises.
Description
Technical field
The present invention relates to the transformer field transformer, specifically, relate to a kind of gas-insulated transformer.Be mainly used in the high voltage substation of 110KV.
Background technology
Development along with urban construction, big and medium-sized cities population is all the more intensive, and skyscraper, underpass and building are more and more, and China's electric railway simultaneously and subway also are in high-speed development period, add that people are also more and more higher to the dependence and the degree of consumption of electric power, power consumption sharply rises.The power transformer of original 35KV and following electric pressure can not meet the demands, and the 110KV electric power system has become the priority scheme of the regional power supply in big and medium-sized cities.Meanwhile, people are more and more stricter to the requirement of fail safe, reliability, the quality of power supply and the city environmental protection of electric power system, especially to factor special concerns such as fire prevention, explosion-proof, anti-pollution and noise reduction sound.At present, the 110KV high voltage substation is directly built in down town and the skyscraper, common oil-immersed power transformer exists many potential safety hazards, as burning, blast, people's the security of the lives and property in serious threat, the seepage of oil also can serious environment pollution, and the noise height of oil-immersed type transformer, transformer station's area occupied is big, and dry-type power transformer can only accomplish at present that in the world voltage is that 35KV, capacity are 20000KVA and following, if, also have very big difficulty to more high voltage, the development of bigger capacity.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the gas-insulated transformer that a kind of security performance is good, floor space is little is provided.
The technical scheme that realizes above-mentioned purpose is: a kind of gas-insulated transformer, form by gas tank and the iron core, low pressure winding, high pressure winding and the dielectric that are positioned at gas tank, low pressure winding and high pressure winding all are sleeved on the iron core, and the high pressure winding is positioned at the low pressure winding outside, separate by insulating material between high pressure winding and the low pressure winding, described dielectric is the SF6 gas of pure gaseous state.
Further, the high pressure winding adopts and is entangled with-the continous way structure.
Further, the PET material is adopted in the insulation of the conductive surface of low pressure winding and high pressure winding.
After adopting technique scheme,, make the fire protecting performance of transformer good, avoid blast, the fail safe that has improved transformer owing to adopt the pure gaseous state SF6 gas of insulating properties, good flame resistance to fill in gas tank as dielectric.After transformer uses the SF6 gas-insulated, just do not need to install oil conservator, make the aspect ratio oil-immersed type transformer of transformer reduce by 20%, floor space has been dwindled, and fail safe has also improved, and this transformer is very favourable to being used for underground substation, and its noise is low, helps the environment harmony.
The PET material of high-fire resistance and high mechanical properties is adopted in the insulation of the conductive surface of high pressure winding and low pressure winding, makes the insulation of winding and heat resistance more reliable.
Description of drawings
Fig. 1 is an internal structure schematic diagram of the present invention;
Fig. 2 is the connection diagram of iron core and high pressure winding and iron core and low pressure winding.
Embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
As shown in Figure 1, 2, a kind of gas-insulated transformer, form by gas tank 1 and the iron core 2, low pressure winding 3, high pressure winding 4 and the dielectric that are positioned at gas tank 1, low pressure winding 3 and high pressure winding 4 all are sleeved on unshakable in one's determination 2, and high pressure winding 4 is positioned at low pressure winding 3 outsides, separate by insulating material between high pressure winding 4 and the low pressure winding 3, this insulating material is a hardboard, and described dielectric is the SF6 gas 5 of pure gaseous state.
Described high pressure winding 4 adopts is entangled with-the continous way structure.Surge voltage according to the wave process computer distributes, and airway size between the turn insulation thickness of adjustment winding and cake makes winding satisfy the insulating Design requirement from dielectric strength.And taked internal side diameter to add effective measures such as filler strip at the head end of winding, and reduce the local field strength on winding surface, improve the dielectric strength of winding.
The PET material of high-fire resistance and high mechanical properties is adopted in the insulation of the conductive surface of high pressure winding 4 and low pressure winding 3, makes the insulation of winding and heat resistance more reliable.
Hot spot temperature of winding optical fiber temperature-measurement device is housed on high pressure winding 4 and low pressure winding 3.Traditional temperature rise test can only be measured the average temperature rising of winding, can't measure hottest spot temperature, worldwide transformer production manufacturer and power department are consistent thinks that the hottest spot temperature that has only direct measuring transformer winding is only the unique reliable method of hottest spot temperature of determining.Use the hottest spot temperature that the optical fiber measurement system detects winding in the present invention, not only in temperature rise test, comparablely obtain accurate data, and can be used for the line monitoring, the hottest spot temperature that makes operation department can obtain winding has intuitively improved the operational reliability of transformer greatly, and adopt the starting and stopping of the exert oneself size and the cooling fan of outside two-loop intelligent type controller control SF6 air pump to move, make transformer operate in most economical safe state.
The industrial frequency withstand voltage level that common oil immersion becomes is 200KV, and gas-insulated transformer of the present invention reaches 230KV, has improved the main insulation level of gas-insulated transformer.
The full lightning impulse insulation level that common oil immersion becomes is 430KV, and gas-insulated transformer of the present invention reaches 550KV, has improved the longitudinal insulation level of gas-insulated transformer.
Claims (3)
1. gas-insulated transformer, form by gas tank (1) and the iron core (2), low pressure winding (3), high pressure winding (4) and the dielectric that are positioned at gas tank (1), low pressure winding (3) and high pressure winding (4) all are sleeved on the iron core (2), and high pressure winding (4) is positioned at low pressure winding (3) outside, separate by insulating material between high pressure winding (4) and the low pressure winding (3), it is characterized in that: described dielectric is the SF6 gas (5) of pure gaseous state.
2. gas-insulated transformer according to claim 1 is characterized in that: described high pressure winding (4) adopts and is entangled with-the continous way structure.
3. gas-insulated transformer according to claim 1 and 2 is characterized in that: the PET material is adopted in the insulation of the conductive surface of described low pressure winding (3) and high pressure winding (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010123453 CN101840772A (en) | 2010-03-15 | 2010-03-15 | Gas insulating transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010123453 CN101840772A (en) | 2010-03-15 | 2010-03-15 | Gas insulating transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101840772A true CN101840772A (en) | 2010-09-22 |
Family
ID=42744086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010123453 Pending CN101840772A (en) | 2010-03-15 | 2010-03-15 | Gas insulating transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101840772A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208349A (en) * | 2013-04-27 | 2013-07-17 | 华北电力大学（保定） | Winding water-cooling gas insulating transformer |
| CN104157434A (en) * | 2014-08-22 | 2014-11-19 | 深圳供电局有限公司 | 220 kV gas insulation transformer |
| CN107077955A (en) * | 2014-07-10 | 2017-08-18 | Abb瑞士股份有限公司 | Electric equipment comprising gas insulated apparatus, particularly gas-insulated transformer or reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295578A (en) * | 2008-04-30 | 2008-10-29 | 保定天威集团有限公司 | Sulfur hexafluoride gas insulating transformer |
| CN201166998Y (en) * | 2007-08-24 | 2008-12-17 | 上海杨行铜材有限公司 | Transposition conductor for PET polyester film |
-
2010
- 2010-03-15 CN CN 201010123453 patent/CN101840772A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201166998Y (en) * | 2007-08-24 | 2008-12-17 | 上海杨行铜材有限公司 | Transposition conductor for PET polyester film |
| CN101295578A (en) * | 2008-04-30 | 2008-10-29 | 保定天威集团有限公司 | Sulfur hexafluoride gas insulating transformer |
Non-Patent Citations (1)
| Title |
|---|
| 《变压器绕组制造工艺》 19980630 变压器制造技术丛书编审委员会 变压器绕组制造工艺 机械工业出版社 26，27，33 2 , 1 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208349A (en) * | 2013-04-27 | 2013-07-17 | 华北电力大学（保定） | Winding water-cooling gas insulating transformer |
| CN107077955A (en) * | 2014-07-10 | 2017-08-18 | Abb瑞士股份有限公司 | Electric equipment comprising gas insulated apparatus, particularly gas-insulated transformer or reactor |
| US10714256B2 (en) | 2014-07-10 | 2020-07-14 | Abb Power Grids Switzerland Ag | Electrical device comprising a gas-insulated apparatus, in particular a gas-insulated transformer or reactor |
| CN104157434A (en) * | 2014-08-22 | 2014-11-19 | 深圳供电局有限公司 | 220 kV gas insulation transformer |
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Legal Events
| Date | Code | Title | Description |
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| 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 |
Open date: 20100922 |