CN204390831U - A kind of power transformer instrument transformer degaussing gear - Google Patents
A kind of power transformer instrument transformer degaussing gear Download PDFInfo
- Publication number
- CN204390831U CN204390831U CN201520115623.3U CN201520115623U CN204390831U CN 204390831 U CN204390831 U CN 204390831U CN 201520115623 U CN201520115623 U CN 201520115623U CN 204390831 U CN204390831 U CN 204390831U
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- demagnetization
- transformer
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- degaussing
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Abstract
The utility model relates to a kind of power transformer instrument transformer degaussing gear, comprises demagnetization source, demagnetization detecting unit, demagnetization control unit, demagnetization output unit, degaussing mode selector switch, demagnetization GSS Gear Select Switch; Wherein, demagnetization control unit connects demagnetization source, demagnetization detecting unit, demagnetization output unit respectively; Described demagnetization output unit connects by the transformer of demagnetization or instrument transformer sleeve pipe; The input in described demagnetization source connects degaussing mode selector switch, demagnetization GSS Gear Select Switch respectively; The output termination demagnetization detecting unit in described demagnetization source.The beneficial effects of the utility model are: cost is low, volume is little, demagnetization speed fast, easy to use and flexible.
Description
Technical field
The utility model belongs to electric power system inductive technologies field, is specifically related to a kind of power transformer instrument transformer degaussing gear.
Background technology
Power transformer instrument transformer demagnetization instrument is the equipment of remanent magnetism harm after the test of elimination power transformer instrument transformer D.C. resistance, impacts from magnetizing inrush current protection power transformer instrument transformer, and the extremely important effect that put into operation safely.Due to the hysteresis that ferromagnetic material is intrinsic, remanent magnetism can be remained in the core which after power transformer being carried out to the operation such as voltage ratio, direct current resistance m easurem ent.Due to the existence of remanent magnetism; when transformer puts into operation, iron core remanent magnetism makes transformer core half cycle saturated, produces a large amount of harmonic wave in exciting current, this not only adds the reactive power consumption of transformer; and relay protector misoperation may be caused, cause certain economic loss.So degaussing operation must be done before transformer puts into operation, guarantee that transformer safety is normally run.
Utility model content
In order to solve the problems referred to above that prior art exists, the utility model provides a kind of power transformer instrument transformer degaussing gear, and cost is low, volume is little, demagnetization speed fast, easy to use and flexible.
The technical scheme that the utility model adopts is: a kind of power transformer instrument transformer degaussing gear, comprises demagnetization source, demagnetization detecting unit, demagnetization control unit, demagnetization output unit, degaussing mode selector switch, demagnetization GSS Gear Select Switch; Wherein, demagnetization control unit connects demagnetization source, demagnetization detecting unit, demagnetization output unit respectively; Described demagnetization output unit connects by the transformer of demagnetization or instrument transformer sleeve pipe; The input in described demagnetization source connects degaussing mode selector switch, demagnetization GSS Gear Select Switch respectively; The output termination demagnetization detecting unit in described demagnetization source.
Further, described demagnetization control unit also comprises gain control unit and polarization converting unit, and the electric current offseting magnetic source access carries out demagnetization control.
The beneficial effects of the utility model are: cost is low, volume is little, demagnetization speed fast, easy to use and flexible.
Accompanying drawing explanation
Fig. 1 is the structural representation of the power transformer instrument transformer degaussing gear that the utility model embodiment 1 provides;
Fig. 2 is the structural representation of the power transformer instrument transformer degaussing gear that the utility model embodiment 2 provides;
Fig. 3 is the utility model using state wiring schematic diagram.
Embodiment
Embodiment 1:
As shown in Figure 1, the utility model provides a kind of power transformer instrument transformer degaussing gear 1, comprising: demagnetization source 11, for providing current source; Demagnetization detecting unit 12, for carrying out logic detection to degaussing process; Demagnetization control unit 13, for carrying out logic control to degaussing process; Demagnetization output unit 14, for for being carried out direct current output by the transformer of demagnetization or instrument transformer, realizes demagnetization object; Degaussing mode selector switch 15, for providing degaussing mode to select, comprising Non-follow control and automatically controlling two kinds of patterns; Demagnetization GSS Gear Select Switch 16, for providing erasing current gear to select, comprise 1A 2A 5A.Wherein, demagnetization control unit 13 connects demagnetization source 11, demagnetization detecting unit 12, demagnetization output unit 14 respectively; Described demagnetization output unit 14 connects by the transformer of demagnetization or instrument transformer sleeve pipe; The input in described demagnetization source 11 connects degaussing mode selector switch 15, demagnetization GSS Gear Select Switch 16 respectively; The output termination demagnetization detecting unit 12 in described demagnetization source 11.
It should be noted that, during use, be connected with external AC 220V power supply with reference power supply bundle of lines power transformer instrument transformer degaussing gear 1, with earth connection, earth terminal is connected with the earth, demagnetization output unit connects the two ends of transformer or instrument transformer 2 high-pressure side coil, as shown in Figure 3, demagnetization exports regardless of positive and negative.
Embodiment 2:
The present embodiment is a kind of preferred version of embodiment 1, and as different from Example 1, as shown in Figure 2, described demagnetization control unit 13 also comprises gain control unit 131 and polarization converting unit 132, and the electric current offseting magnetic source 11 access carries out demagnetization control.Wherein, gain control unit 131 offsets magnetic source and carries out voltage and current gain control, and exports to polarization converting unit 132 and realize demagnetization object, and conversion efficiency is higher, and demagnetization effectiveness is more obvious, can realize 4min/ time/phase.
The beneficial effects of the utility model are: cost is low, volume is little, demagnetization speed fast, easy to use and flexible.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection range of the present utility model.
Claims (2)
1. a power transformer instrument transformer degaussing gear, is characterized in that: comprise demagnetization source, demagnetization detecting unit, demagnetization control unit, demagnetization output unit, degaussing mode selector switch, demagnetization GSS Gear Select Switch; Wherein, demagnetization control unit connects demagnetization source, demagnetization detecting unit, demagnetization output unit respectively; Described demagnetization output unit connects by the transformer of demagnetization or instrument transformer sleeve pipe; The input in described demagnetization source connects degaussing mode selector switch, demagnetization GSS Gear Select Switch respectively; The output termination demagnetization detecting unit in described demagnetization source.
2. power transformer instrument transformer degaussing gear according to claim 1, is characterized in that: described demagnetization control unit also comprises gain control unit and polarization converting unit, and the electric current offseting magnetic source access carries out demagnetization control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520115623.3U CN204390831U (en) | 2015-02-25 | 2015-02-25 | A kind of power transformer instrument transformer degaussing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520115623.3U CN204390831U (en) | 2015-02-25 | 2015-02-25 | A kind of power transformer instrument transformer degaussing gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204390831U true CN204390831U (en) | 2015-06-10 |
Family
ID=53363529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520115623.3U Expired - Fee Related CN204390831U (en) | 2015-02-25 | 2015-02-25 | A kind of power transformer instrument transformer degaussing gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204390831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873461A (en) * | 2017-03-02 | 2017-06-20 | 国家电网公司 | A kind of control method of remanence of current transformer degaussing gear |
-
2015
- 2015-02-25 CN CN201520115623.3U patent/CN204390831U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873461A (en) * | 2017-03-02 | 2017-06-20 | 国家电网公司 | A kind of control method of remanence of current transformer degaussing gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20200225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |