CN201732672U - Harmonic elimination type voltage transformer - Google Patents
Harmonic elimination type voltage transformer Download PDFInfo
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- CN201732672U CN201732672U CN2010201804197U CN201020180419U CN201732672U CN 201732672 U CN201732672 U CN 201732672U CN 2010201804197 U CN2010201804197 U CN 2010201804197U CN 201020180419 U CN201020180419 U CN 201020180419U CN 201732672 U CN201732672 U CN 201732672U
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- resonance
- voltage transformer
- eliminator
- type voltage
- resonance eliminator
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Abstract
The utility model discloses a harmonic elimination type voltage transformer, which comprises a high voltage winding with three inter-shorted ends, three groups of secondary winding voltage transformer, one or a plurality of primary harmonic eliminators, one or a plurality of conductive channels which are one-to-one corresponding to the primary harmonic eliminators, are electrically connected with one another, and are connected with the shorted ends of the high voltage winding, wherein one end of the primary harmonic eliminator is inserted in the corresponding conductive channel; the voltage transformer, one or a plurality of primary harmonic eliminators, and one or a plurality of conductive channels are injected into one whole body. The utility model has the beneficial effects that the harmonic elimination type voltage transformer integrates the harmonic eliminator and voltage transformer into one whole body, can replace the primary harmonic eliminator separately, and has small volume.
Description
Technical field
The utility model relates to a kind of voltage transformer, particularly a kind of resonance eliminating type voltage transformer.
Background technology
Therefore because China's power distribution network is isolated neutral system, recurrent ferro-resonance over-voltage and ground fault cause a large amount of voltage transformers to ftracture because of overload or explode, annual and caused a large amount of accidents, have reduced power supply reliability.Therefore, prior art has adopted resonance eliminator, to eliminate or damping PT non-linear exciter characteristic and the ferro-resonance over-voltage that causes.In addition, resonance eliminator also can play following effect: flow through the overcurrent of voltage transformer winding when 1, suppressing the intermittence arc grounding effectively, prevent burning of voltage transformer; What produce in winding loop of voltage transformer when 2, the restriction system single-phase earthing disappears shoves, and this shoving can be damaged voltage transformer or be made the voltage transformer fuse failure; 3, but long period protection voltage transformer is avoided damaging behind system's generation single-phase earthing.In a word, in China's power distribution network, it is very to be necessary ground that resonance eliminator is set.
The harmonic elimination mode of prior art is divided into harmonic elimination and secondary harmonic elimination, and the basic principle of a resonance eliminator is: one time resonance eliminator essence is a kind of high power capacity nonlinear resistor, plays damping and current limliting.Can play the effect of good deboost instrument transformer ferro resonance.After resonance eliminator is installed, power-to-ground capacitance will have a transient process that discharges and recharges by winding of PT.In this transient process, the power frequency half-wave that usually has the highest amplitude to reach several amperes shoves by PT, and high electric current might be with the PT high-voltage wire iron-melting fusing.And after resonance eliminator had been installed, this shoving will be effectively suppressed, and high voltage fuse no longer fuses because of this shoving.Theoretical and operation practice proves that all a harmonic elimination is effectively, can thoroughly eliminate resonance substantially.
Yet the made resonance eliminator volume of carborundum that prior art is made or ptc material is excessive, can't transform for a large amount of transformer stations that moved in electrical network.And in the prior art, because the terminal tolerating high voltage of voltage transformer high pressure winding, its magnitude of voltage is not less than system line voltage at least.Otherwise when system earth or generation resonance, the insulation of terminal outlet is with breakdown.Can't bear high pressure because existing voltage transformer end is many, and how less the casing volume at voltage transformer place is, its space is difficult to install independently resonance eliminator more.Therefore, when a resonance eliminator is installed, need change voltage transformer simultaneously, cause a large amount of consumption of resource easily.
Therefore, how to provide a kind of integrate resonance eliminator and voltage transformer, can change a resonance eliminating type voltage transformer resonance eliminator, that volume is less separately, become the content that those skilled in the art need solve.
The utility model content
Technical scheme to be solved of the present utility model provides a kind of resonance eliminating type voltage transformer, to solve the deficiencies in the prior art.
Be to solve technique scheme, the utility model provides a kind of resonance eliminating type voltage transformer, comprising: the high pressure winding of three mutual short circuits of end, and the voltage transformer of three groups of secondary winding; One or several resonance eliminator; With a described resonance eliminator one to one, mutual electrically connect and one or several conductive troughs that be connected with the end of described high pressure winding short circuit; Wherein, an end of a described resonance eliminator is plugged in the corresponding conductive trough, described voltage transformer, described one or several resonance eliminator, and described one or several conductive troughs poured into an integrated entity.
As one of preferred version of the present utility model, the head end of described three high pressure windings is three ends of corresponding outside three-phase electricity respectively.
As one of preferred version of the present utility model, a described resonance eliminator can be extracted from the conductive trough corresponding with it.
As one of preferred version of the present utility model, the other end ground connection of described disposable resonance eliminator.
As one of preferred version of the present utility model, the quantity of a described resonance eliminator is one, and the quantity of described conductive trough is one.
As one of preferred version of the present utility model, high pressure winding and one group of secondary winding constitute a unit of described voltage transformer, and a described resonance eliminator is arranged on arbitrarily between two adjacent cells.
As one of preferred version of the present utility model, the quantity of a described resonance eliminator is two, the quantity of described conductive trough is two, and high pressure winding and secondary winding constitute a unit of described voltage transformer, a described resonance eliminator and described unit interval setting
As one of preferred version of the present utility model, described unit all vertically is provided with, and a described resonance eliminator all is horizontally disposed with.
As one of preferred version of the present utility model, the described resonance eliminating type voltage transformer side of being body, described conductive trough is fixed on the sidewall of described side's body.
As one of preferred version of the present utility model, described conductive trough is the metal flange groove.
The beneficial effects of the utility model are: integrate resonance eliminator and voltage transformer, that can change a resonance eliminator separately, volume is less.
Description of drawings
The resonance eliminating type voltage transformer that Fig. 1 provides for the utility model face structural representation.
The resonance eliminating type voltage transformer equivalent electric schematic diagram that Fig. 2 provides for the utility model.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1 and Fig. 2, a kind of resonance eliminating type voltage transformer comprises:
The high pressure winding L 1 of three mutual short circuits of end, L2, L3, and the voltage transformer of three groups of secondary winding;
Two resonance eliminator RXQ;
Two with a described resonance eliminator one to one, mutual electrically connect and conductive trough that be connected with the end of described high pressure winding short circuit (figure does not show);
Wherein, the end of described two resonance eliminator RXQ is plugged in respectively in two corresponding conductive troughs, the equal ground connection of the other end.Described voltage transformer L1, L2, L3, described two resonance eliminator RXQ, and described two conductive troughs poured into an integrated entity, wherein, pouring into an integrated entity by the solids epoxy technology is preferred version.
Further, three ends of the corresponding outside three-phase electricity of the head end of described three high pressure winding L 1, L2, L3 difference.
Further, described two resonance eliminator RXQ can extract from the conductive trough of correspondence.
Further, high pressure winding and one group of secondary winding constitute a unit of described voltage transformer, so, constitute three unit U1, U2, U3, and described two resonance eliminator RXQ and described unit U1, U2, U3 are provided with at interval.
Further, described unit U1, U2, U3 all vertically are provided with, and a described resonance eliminator RXQ all is horizontally disposed with.
Further, the described resonance eliminating type voltage transformer side of being body.
Further, described conductive trough is fixed on the sidewall of described side's body.
Further, described conductive trough is the metal flange groove.
The two ends of secondary winding all are expressed as a, n, the head end of three high pressure winding L 1, L2, L3 links to each other with three-phase electricity A, B, C, after linking together, its end connects a resonance eliminator RXQ, because an end of two resonance eliminators is arranged in two conductive troughs, two conductive troughs are to electrically connect mutually, and the equal ground connection of the other end of two resonance eliminators, therefore, two resonance eliminator parallel connections can be a resonance eliminator RXQ by equivalence.
When making resonance eliminating type voltage transformer of the present utility model, at first the secondary winding of three single-phase potential transformers is wound on respectively on the iron core separately, and then reserve with the corresponding insulation distance of the class of insulation after, coiling goes out the three-phase high-voltage winding respectively.The head end of three high pressure windings is set to A, B, the outlet of C three-phase high-voltage respectively, and the end with three high pressure windings links together then, and links to each other with the conductive trough that plugs resonance eliminator.After finishing combinations thereof, by solid insulation epoxy casting technology, it is solidified into as a whole, promptly become a resonance eliminating type instrument transformer.
Embodiment two
The difference of present embodiment and embodiment one is, the quantity of a resonance eliminator is one, the quantity that is used to plug the conductive trough of a resonance eliminator also is one, conductive trough connects the end of high pressure winding short circuit, one time resonance eliminator one end is plugged in the conductive trough, other end ground connection, and can be arranged between any two adjacent cells in three unit of voltage transformer.
Then,, can save a resonance eliminator, save the space better in the less occasion of part electric flux.
It needs to be noted that electric flux is less instantly for some, but following electric flux may strengthen, need under the situation of headspace, can adopt the resonance eliminating type voltage transformer described in the embodiment one, and only plug a resonance eliminator, extract another resonance eliminator.Can satisfy the demand of electric flux instantly, have and leave the leeway that increases the resonance eliminator capacity.The structure that so has two resonance eliminators and two conductive troughs is open in embodiment one, so be not repeated.
Embodiment three
The difference of present embodiment and embodiment one is, the quantity of a resonance eliminator is more than two, the quantity that is used to plug the conductive trough of a resonance eliminator also is two, conductive trough all electrically connects and connects the end of high pressure winding short circuit mutually, once an end of resonance eliminator can be plugged in the different conductive troughs respectively, the equal ground connection of the other end, between two adjacent cells in three unit of voltage transformer an one or more resonance eliminator can be set, to satisfy the bigger occasion of electric flux.
Resonance eliminating type voltage transformer of the present utility model has the following advantages:
1, collection harmonic elimination mutual induction of voltage and one are easy for installation.
2, resonance eliminator can be extracted in conductive trough, is convenient for changing.
3, a resonance eliminator can be set to one or two or more than two, satisfy different demands.When a resonance eliminator is split into two, two resonance eliminators and unit interval setting, and adopt the unit vertically to be provided with, the horizontally disposed mode of resonance eliminator, greatly saved the space, make the cumulative volume of resonance eliminating type voltage transformer less than in the prior art, install resonance eliminator and voltage transformer volume required 2/3rds.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only.Any modification or partial replacement that does not break away from the utility model spirit and scope all should be encompassed in the middle of the claim scope of the present utility model.
Claims (9)
1. a resonance eliminating type voltage transformer is characterized in that, comprising:
The high pressure winding of three mutual short circuits of end, and the voltage transformer of three groups of secondary winding;
One or several resonance eliminator;
With a described resonance eliminator one to one, mutual electrically connect and one or several conductive troughs that be connected with the end of described high pressure winding short circuit;
Wherein, an end of a described resonance eliminator is plugged in the corresponding conductive trough, described voltage transformer, described one or several resonance eliminator, and described one or several conductive troughs poured into an integrated entity.
2. resonance eliminating type voltage transformer as claimed in claim 1 is characterized in that: the head end of described three high pressure windings is three ends of corresponding outside three-phase electricity respectively.
3. resonance eliminating type voltage transformer as claimed in claim 1 is characterized in that: a described resonance eliminator can be extracted from the conductive trough corresponding with it.
4. as claim 1 or 3 described resonance eliminating type voltage transformers, it is characterized in that: the other end ground connection of a described resonance eliminator.
5. as claim 1 or 3 described resonance eliminating type voltage transformers, it is characterized in that: high pressure winding and one group of secondary winding constitute a unit of described voltage transformer, and a described resonance eliminator is arranged on arbitrarily between two adjacent cells.
6. as claim 1 or 3 described resonance eliminating type voltage transformers, it is characterized in that: the quantity of a described resonance eliminator is two, the quantity of described conductive trough is two, high pressure winding and secondary winding constitute a unit of described voltage transformer, a described resonance eliminator and described unit interval setting.
7. resonance eliminating type voltage transformer as claimed in claim 6 is characterized in that: described unit all vertically is provided with, and a described resonance eliminator all is horizontally disposed with.
8. resonance eliminating type voltage transformer as claimed in claim 1 is characterized in that: the described resonance eliminating type voltage transformer side of being body, described conductive trough is fixed on the sidewall of described side's body.
9. as claim 1 or 8 described resonance eliminating type voltage transformers, it is characterized in that: described conductive trough is the metal flange groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201804197U CN201732672U (en) | 2010-04-28 | 2010-04-28 | Harmonic elimination type voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201804197U CN201732672U (en) | 2010-04-28 | 2010-04-28 | Harmonic elimination type voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732672U true CN201732672U (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201804197U Expired - Fee Related CN201732672U (en) | 2010-04-28 | 2010-04-28 | Harmonic elimination type voltage transformer |
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| CN (1) | CN201732672U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721891A (en) * | 2012-07-04 | 2012-10-10 | 宁夏电力公司电力科学研究院 | Test device for non-liner resistor type resonance eliminator |
| CN106601456A (en) * | 2017-01-05 | 2017-04-26 | 繁昌县易能科技有限责任公司 | Oil-immersed potential transformer |
| CN108767815A (en) * | 2018-07-17 | 2018-11-06 | 云南电网有限责任公司红河供电局 | Electromagnetic potential transformer auto by pass harmonic elimination apparatus |
-
2010
- 2010-04-28 CN CN2010201804197U patent/CN201732672U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721891A (en) * | 2012-07-04 | 2012-10-10 | 宁夏电力公司电力科学研究院 | Test device for non-liner resistor type resonance eliminator |
| CN102721891B (en) * | 2012-07-04 | 2015-01-14 | 宁夏电力公司电力科学研究院 | Test device for non-liner resistor type resonance eliminator |
| CN106601456A (en) * | 2017-01-05 | 2017-04-26 | 繁昌县易能科技有限责任公司 | Oil-immersed potential transformer |
| CN108767815A (en) * | 2018-07-17 | 2018-11-06 | 云南电网有限责任公司红河供电局 | Electromagnetic potential transformer auto by pass harmonic elimination apparatus |
| CN108767815B (en) * | 2018-07-17 | 2024-02-02 | 云南电网有限责任公司红河供电局 | Automatic bypass resonance elimination device of electromagnetic voltage transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Three-phase harmonic elimination type voltage transformer Effective date of registration: 20131112 Granted publication date: 20110202 Pledgee: Pudong Development Bank of Minhang Shanghai branch Pledgor: Shanghai GoodRun Electric Power Technology Co., Ltd. Registration number: 2013310000061 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20180428 |