CN204130318U - A kind of lightning protection dry-type transformer - Google Patents

A kind of lightning protection dry-type transformer Download PDF

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Publication number
CN204130318U
CN204130318U CN201420520289.5U CN201420520289U CN204130318U CN 204130318 U CN204130318 U CN 204130318U CN 201420520289 U CN201420520289 U CN 201420520289U CN 204130318 U CN204130318 U CN 204130318U
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CN
China
Prior art keywords
coil
voltage
low
lightning
lightning protection
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Active
Application number
CN201420520289.5U
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Chinese (zh)
Inventor
周龙胜
何昌红
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FOSHAN FORUI ELECTRIC Co Ltd
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FOSHAN FORUI ELECTRIC Co Ltd
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Priority to CN201420520289.5U priority Critical patent/CN204130318U/en
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Publication of CN204130318U publication Critical patent/CN204130318U/en
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Abstract

The utility model discloses a kind of lightning protection dry-type transformer, comprise core assemblies, be clamped in the upper and lower folder of core assemblies top and the bottom, described upper clamping piece or lower clamping piece are provided with mount pad, be positioned at mount pad and be provided with multiple lightning arrester, described lightning arrester is connected by ground lead, ground lead end is connected with ground, described core assemblies comprises iron core, low-voltage coil group and high-tension coil group, high-tension coil on each phase voltage circuit of described high-tension coil group is in series with inductance coil, between high-tension coil group and low-voltage coil group, be also provided with screening arrangement; The utility model is rational in infrastructure, lightning protection effect good, is a kind of lightning protection dry-type transformer being widely used in power industry.

Description

A kind of lightning protection dry-type transformer
Technical field
The utility model relates to a kind of transformer, particularly a kind of lightning protection dry-type transformer.
Background technology
Transformer is a kind of static electrical equipment, utilizes electromagnetic induction principle between two or more coils, a kind of voltage and current of grade is converted to the voltage and current of the another kind of grade of same frequency and electric energy transmitting.Existing transformer major part does not arrange lightning protection measures; even if transformer is provided with lightning protection measures; the performance of its lightning protection device is general all poor; lightning protection device 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; even cause power outage, or because of thunder and lightning initiation fire accident.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of rational in infrastructure, lightning protection dry-type transformer that lightning protection effect is good.
The utility model solves the technical scheme that its technical problem adopts:
A kind of lightning protection dry-type transformer, comprise core assemblies, be clamped in the upper and lower folder of core assemblies top and the bottom, described upper clamping piece or lower clamping piece are provided with mount pad, be positioned at mount pad and be provided with multiple lightning arrester, described lightning arrester is connected by ground lead, ground lead end is connected with ground, described core assemblies comprises iron core, low-voltage coil group and high-tension coil group, high-tension coil on each phase voltage circuit of described high-tension coil group is in series with inductance coil, between high-tension coil group and low-voltage coil group, be also provided with screening arrangement.
Further, each phase voltage circuit of described low-voltage coil group all has two corresponding low-voltage coils, and arranged crosswise between low-voltage coil in each phase voltage.
Further, described screening arrangement is metallic shield, and this metallic shield passes through wired earth.
The beneficial effects of the utility model are: when line influence thunderstorm hour, lightning arrester can be introduced the earth lightning voltage as early as possible and run to guarantee that the safety of transformer is normal, because lightning arrester to be arranged on the upper clamping piece of transformer or lower clamping piece on set mount pad, time particularly on lower clamping piece, lightning arrester is overhead nearest, the D.C. resistance of the down conductor of lightning arrester is also minimum, thus lightning-arrest effect is also best; In addition, in conjunction with the high-tension coil on each phase voltage circuit of core assemblies inner high voltage coil groups being in series with inductance coil, arranging these structures of screening arrangement between high-tension coil group and low-voltage coil group simultaneously, transformer is made to have extremely strong anti-lightning performance, can guarantee that transformer can not be broken by invaded lightning wave, thus ensure that the safe operation becoming power distribution network.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of core assemblies in the utility model.
Embodiment
With reference to Fig. 1, Fig. 2, a kind of lightning protection dry-type transformer, comprise core assemblies 1, be clamped in the upper of core assemblies 1 top and the bottom, lower clamping piece 2, 3, described upper clamping piece 2 or lower clamping piece 3 are provided with mount pad 4, be positioned at mount pad 4 and be provided with multiple lightning arrester 5, described lightning arrester 5 is connected by ground lead 6, ground lead 6 end is connected with ground, described core assemblies 1 comprises iron core, low-voltage coil group and high-tension coil group, high-tension coil 11 on each phase voltage circuit of described high-tension coil group is in series with inductance coil 12, screening arrangement 13 is also provided with between high-tension coil group and low-voltage coil group.
When line influence thunderstorm hour, lightning arrester 5 can be introduced the earth lightning voltage as early as possible and run to guarantee that the safety of transformer is normal, because lightning arrester 5 to be arranged on the upper clamping piece 2 of transformer or lower clamping piece 3 on set mount pad 4, time particularly on lower clamping piece 3, lightning arrester 5 is overhead nearest, the D.C. resistance of the down conductor of lightning arrester 5 is also minimum, thus lightning-arrest effect is also best; The inductance coil 12 that the utility model is connected in the high-pressure side coil groups of core assemblies 1 can play the effect of protection transformer; The high-tension current of thunderbolt stops after consumption through inductance coil 12, make the instant high-voltage of high-pressure side coil groups and low-pressure end coil groups, high electric current is reduced within the scope of transformer safety, reduce invasion thunder and lightning wave steepness and amplitude, effectively protect inside transformer coil and other component; And high-pressure side coil groups and low-pressure end coil groups between be provided with screening arrangement 13, overvoltage transformation can thought highly of, electric current are incorporated into the earth in time, the impact strength of transformer anti lightning can be improved and reduce transferring over-voltage, thus ensure that the safe operation becoming power distribution network.
In the utility model, each phase voltage circuit of described low-voltage coil group all has two corresponding low-voltage coils 14, and arranged crosswise between low-voltage coil 14 in each phase voltage; Make the low-voltage coil 14 on two different phase voltage circuits mutually corresponding, like this, on two phase voltage circuits, the magnetic flux of low-voltage coil 14 is cancelled out each other (as shown by the arrows in figure 2).Low-voltage coil 14 arranged crosswise mode on each phase voltage circuit is rational in infrastructure, and no matter lightning wave enters from high-tension coil group or low-voltage coil group, all can not produce positive inverse transform overvoltage, thus effectively attenuates lightning wave.
In the utility model, described screening arrangement 13 is metallic shield, and this metallic shield passes through wired earth.
The utility model is rational in infrastructure, lightning protection effect good, is a kind of lightning protection dry-type transformer being widely used in power industry.

Claims (3)

1. a lightning protection dry-type transformer, comprise core assemblies (1), be clamped in the upper of core assemblies (1) top and the bottom, lower clamping piece (2, 3), it is characterized in that: described upper clamping piece (2) or lower clamping piece (3) are provided with mount pad (4), be positioned at mount pad (4) and be provided with multiple lightning arrester (5), described lightning arrester (5) is connected by ground lead (6), ground lead (6) end is connected with ground, described core assemblies (1) comprises iron core, low-voltage coil group and high-tension coil group, high-tension coil (11) on each phase voltage circuit of described high-tension coil group is in series with inductance coil (12), screening arrangement (13) is also provided with between high-tension coil group and low-voltage coil group.
2. a kind of lightning protection dry-type transformer according to claim 1, each phase voltage circuit that it is characterized in that described low-voltage coil group all has two corresponding low-voltage coils (14), and arranged crosswise between low-voltage coil (14) in each phase voltage.
3. a kind of lightning protection dry-type transformer according to claim 1, it is characterized in that described screening arrangement (13) is metallic shield, this metallic shield passes through wired earth.
CN201420520289.5U 2014-09-11 2014-09-11 A kind of lightning protection dry-type transformer Active CN204130318U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420520289.5U CN204130318U (en) 2014-09-11 2014-09-11 A kind of lightning protection dry-type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420520289.5U CN204130318U (en) 2014-09-11 2014-09-11 A kind of lightning protection dry-type transformer

Publications (1)

Publication Number Publication Date
CN204130318U true CN204130318U (en) 2015-01-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420520289.5U Active CN204130318U (en) 2014-09-11 2014-09-11 A kind of lightning protection dry-type transformer

Country Status (1)

Country Link
CN (1) CN204130318U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110931231A (en) * 2019-12-06 2020-03-27 山东电工电气集团智能电气有限公司 Lightning protection dry-type transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110931231A (en) * 2019-12-06 2020-03-27 山东电工电气集团智能电气有限公司 Lightning protection dry-type transformer
CN110931231B (en) * 2019-12-06 2021-05-04 山东电工电气集团智能电气有限公司 Lightning protection dry-type transformer

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