CN203503444U - Lightning protection transformer - Google Patents
Lightning protection transformer Download PDFInfo
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- CN203503444U CN203503444U CN201320109654.9U CN201320109654U CN203503444U CN 203503444 U CN203503444 U CN 203503444U CN 201320109654 U CN201320109654 U CN 201320109654U CN 203503444 U CN203503444 U CN 203503444U
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Abstract
The utility model discloses a lightning protection transformer, and relates to the technical field of transformers. The lightning protection transformer comprises a transformer enclosure, wherein a high-voltage end coil assembly and a low-voltage end coil assembly are mainly arranged in the transformer enclosure; a voltage line of each phase of the high-voltage end coil assembly comprises a high-voltage coil; a voltage line of each phase of the low-voltage end coil assembly comprises a low-voltage coil; an inductance coil is connected in series with the high-voltage coil on the voltage line of each phase of the high-voltage end coil assembly, and an inductance value of each inductance coil is selected according to the capacity and the voltage grade of the transformer. According to the lighting protection transformer, three transformer protection modes can be separately used or combined for use; due to the adoption of a triple combined lightning protection measure, extremely high lightning protection performance is ensured, the transformer can be prevented from being damaged by invading lightning waves, and the safe running of a power transformation and distribution network is ensured; therefore, the lightning protection transformer has huge economic and social benefits.
Description
Technical field
The utility model relates to transformer technology field, relates in particular to a kind of lightning arrestering transformer, and particularly a kind of have a lightning arrestering transformer that multiple anti lightning hits protective effect.
Background technology
At present, known transformer is comprised of high-tension coil, low-voltage coil, iron core, transformer oil and transformer case.Existing transformer major part does not arrange anti-thunder measure, even if be provided with anti-thunder measure on transformer, the performance of its anti-thunder device is generally all poor, can not play well the effect of resisting lightning wave.Because the anti-thunder device of transformer is weak, when lightning surge intrusion, the high-tension coil of transformer and low-voltage coil usually, because immediate current, voltage are excessive, often can be damaged, and even cause power outage, or because of thunder and lightning initiation fire accident.
Utility model content
The purpose of this utility model is to overcome the defects such as the not anti-thunder measure of existing transformer or anti-thunder weak effect; a kind of novel lightning arrestering transformer is provided; this transformer has better anti-thunder effect and multiple anti-thunder safeguard measure; can resist more effectively, more reliably thunder and lightning; guarantee that transformer operation is safer, the life-span is longer.
The purpose of this utility model is achieved through the following technical solutions:
A lightning arrestering transformer, comprises transformer casing, and transformer casing internal main will be comprised of high-pressure side coil groups and low-pressure end coil groups; On each phase voltage circuit of described high-pressure side coil groups, include high-tension coil, on each phase voltage circuit of described low-pressure end coil groups, include low-voltage coil, the high-tension coil on each phase voltage circuit of described high-pressure side coil groups is in series with inductance coil.The inductance value of this inductance coil is selected according to the capacity of transformer and electric pressure.The inductance coil that the utility model is connected in the high-pressure side coil groups of transformer can play the first effect of heavily protecting transformer.The high-tension current of thunderbolt is after inductance coil stops consumption; make the instant high-voltage of high-pressure side coil groups and low-pressure end coil groups, high current reduction to transformer safe range; reduce invasion thunder and lightning wave steepness and amplitude, effectively protected transformer Inside coil and other component.
In order to realize better the utility model, between described high-pressure side coil groups and low-pressure end coil groups, be provided with screening arrangement.This screening arrangement forms the second heavily protection of transformer, the overvoltage in transformer, electric current can be incorporated into the earth in time, has changed the electric capacity between coil simultaneously, can improve the impact strength of transformer anti lightning and reduce to transmit overvoltage.
In order to realize better the utility model, on each phase voltage circuit of described low-pressure end coil groups, all there are two corresponding low-voltage coils, and arranged crosswise between the low-voltage coil on each phase voltage circuit.Low-voltage coil arranged crosswise mode on each phase voltage circuit forms the triple protection of transformer, and no matter lightning wave enters from high-tension coil group or low-voltage coil group, can not produce forward and inverse conversion overvoltage, thereby effectively weaken lightning wave.
The utility model provides a kind of preferred screening arrangement technical scheme to be, described screening arrangement is metallic shield, and this metallic shield is by wire ground connection.
The further technical scheme of the utility model is, described transformer casing inside is filled with transformer oil, and this transformer oil is around parcel described high-pressure side coil groups, low-pressure end coil groups and screening arrangement.
The utility model is compared compared with prior art, has the following advantages and beneficial effect:
(1) three kinds of tranformer protection modes of the present utility model can be single or be used in combination; select three recombination anti-lightning safeguard measures; there is extremely strong anti-lightning performance, can guarantee that transformer can not break by invaded lightning wave, thereby guaranteed to become the safe operation of power distribution network.Therefore, the utlity model has great economic benefit and social benefit.
(2) inductance coil that the utility model is connected in the high-pressure side coil groups of transformer can play the effect of the first protection transformer; The high-tension current of thunderbolt is after inductance coil stops consumption; make the instant high-voltage of high-pressure side coil groups and low-pressure end coil groups, high current reduction to transformer safe range; reduce invasion thunder and lightning wave steepness and amplitude, effectively protected transformer Inside coil and other component.
(3) screening arrangement of the present utility model forms the second safeguard measure of transformer; overvoltage in transformer, electric current can be incorporated into the earth in time; changed the electric capacity between coil simultaneously, can improve the impact strength of transformer anti lightning and reduce to transmit overvoltage.
(4) the low-voltage coil arranged crosswise mode on the utility model low-voltage coil group phase voltage circuit forms the third safeguard measure of transformer; no matter lightning wave enters from high-tension coil group or low-voltage coil group; can not produce forward and inverse conversion overvoltage, thereby effectively weaken lightning wave.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment.
Wherein, the corresponding name of the Reference numeral in accompanying drawing is called:
1-transformer casing, 2-inductance coil, 3-high-tension coil, 4-screening arrangement, 5-iron core, 6-low-voltage coil, 7-transformer oil.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment
As shown in Figure 1, a kind of lightning arrestering transformer, comprises transformer casing 1, and transformer casing 1 internal main will be comprised of high-pressure side coil groups and low-pressure end coil groups.On each phase voltage circuit of high-pressure side coil groups, include high-tension coil 3, on each phase voltage circuit of low-pressure end coil groups, include low-voltage coil 6, high-tension coil 3 and low-voltage coil 6 are inner containing cored 5.High-tension coil 3 on each phase voltage circuit of high-pressure side coil groups is in series with inductance coil 2.The inductance value of this inductance coil 2 is selected according to the capacity of transformer and electric pressure.The present embodiment selects three-phase transformer to illustrate the utility model principle, and certain same structure principle of the present utility model is also suitable for the eurypalynous transformers such as single-phase transformer, two-phase transformer.Refer to Fig. 1, the high-pressure side coil groups of the present embodiment has A, B, C three-phase voltage circuit, original on the A phase of transformer, B phase and C phase voltage circuit just have respectively high-tension coil 3, the inductance coil 2 that the utility model is electrically connected with respectively on A phase, B phase and C phase voltage circuit with high-tension coil 3 is connected separately.When lightning surge intrusion, the inductance coil 2 that the utility model is connected in the high-pressure side coil groups of transformer can play the first effect of heavily protecting transformer.The high-tension current of thunderbolt stops after consumption through inductance coil 2, has reduced invasion thunder and lightning wave steepness and amplitude, has effectively protected transformer Inside coil and other component.
Refer to Fig. 1, between high-pressure side coil groups of the present utility model and low-pressure end coil groups, be provided with screening arrangement 4.Screening arrangement 4 is metallic shield, and this metallic shield is by wire ground connection.This screening arrangement 4 forms the second heavily protection of transformer, the overvoltage of Transformer Heavy, electric current can be incorporated into the earth in time, can improve the impact strength of transformer anti lightning and reduce to transmit overvoltage.
As shown in Figure 1, on each phase voltage circuit of low-pressure end coil groups, all there are two corresponding low-voltage coils 6, and arranged crosswise between the low-voltage coil 6 on each phase voltage circuit.Because the present embodiment is selected three-phase transformer and is illustrated the utility model principle, so the low-pressure end coil groups of the present embodiment equally also has and has a, b, c three-phase voltage circuit.Original on a phase of step-down side coil groups, b phase and c phase voltage circuit just have respectively low-voltage coil 6, and the utility model is connected respectively a low-voltage coil 6 for correspondence mutually on a phase, b phase and c phase voltage circuit.Therefore all have respectively two low-voltage coils 6 on a phase, b phase and c phase voltage circuit, and low-voltage coil 6 arranged crosswise on the low-voltage coil on one of them phase voltage circuit 6 and another one phase voltage circuit.Be illustrated in figure 1 a kind of arranged crosswise mode, make low-voltage coil on two different phase voltage circuits 6 mutually corresponding, like this, the magnetic flux of low-voltage coil 6 cancel out each other (as shown in Fig. 1 arrow) on two phase voltage circuits.Low-voltage coil 6 arranged crosswise modes on each phase voltage circuit form the triple protection of transformer, and no matter lightning wave enters from high-tension coil group or low-voltage coil group, can not produce forward and inverse conversion overvoltage, thereby effectively weaken lightning wave.
The present embodiment for example understands three-phase transformer, but all applicable to eurypalynous transformers such as single-phase transformer and two phase transformer.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (4)
1. a lightning arrestering transformer, comprises transformer casing (1), and transformer casing (1) internal main will be comprised of high-pressure side coil groups and low-pressure end coil groups; On each phase voltage circuit of described high-pressure side coil groups, include high-tension coil (3), on each phase voltage circuit of described low-pressure end coil groups, include low-voltage coil (6), it is characterized in that: the high-tension coil (3) on each phase voltage circuit of described high-pressure side coil groups is in series with inductance coil (2).
2. according to lightning arrestering transformer claimed in claim 1, it is characterized in that: between described high-pressure side coil groups and low-pressure end coil groups, be provided with screening arrangement (4).
3. according to the lightning arrestering transformer described in claim 1 or 2, it is characterized in that: on each phase voltage circuit of described low-pressure end coil groups, all there are two corresponding low-voltage coils (6), and arranged crosswise between the low-voltage coil (6) on each phase voltage circuit.
4. according to lightning arrestering transformer claimed in claim 2, it is characterized in that: described screening arrangement (4) is metallic shield, this metallic shield is by wire ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320109654.9U CN203503444U (en) | 2013-03-11 | 2013-03-11 | Lightning protection transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320109654.9U CN203503444U (en) | 2013-03-11 | 2013-03-11 | Lightning protection transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503444U true CN203503444U (en) | 2014-03-26 |
Family
ID=50334403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320109654.9U Expired - Fee Related CN203503444U (en) | 2013-03-11 | 2013-03-11 | Lightning protection transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203503444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355401A (en) * | 2015-11-23 | 2016-02-24 | 铜陵瑞博电子科技有限公司 | Lightening proof transformer |
-
2013
- 2013-03-11 CN CN201320109654.9U patent/CN203503444U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105355401A (en) * | 2015-11-23 | 2016-02-24 | 铜陵瑞博电子科技有限公司 | Lightening proof transformer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 |
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| CF01 | Termination of patent right due to non-payment of annual fee |