CN205176251U - Components of a whole that can function independently tandem compound formula voltage transformer - Google Patents
Components of a whole that can function independently tandem compound formula voltage transformer Download PDFInfo
- Publication number
- CN205176251U CN205176251U CN201520953623.0U CN201520953623U CN205176251U CN 205176251 U CN205176251 U CN 205176251U CN 201520953623 U CN201520953623 U CN 201520953623U CN 205176251 U CN205176251 U CN 205176251U
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- CN
- China
- Prior art keywords
- voltage transformer
- transformer
- higher level
- subordinate
- standard potential
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Abstract
The utility model discloses a components of a whole that can function independently tandem compound formula voltage transformer, it adds the ratio juris to use the series mode voltage, establish ties the primary winding of non - standard voltage grade 420kV higher level standard voltage mutual -inductor with the primary winding of the standard voltage of 330kV subordinate mutual -inductor, the primary winding of constituteing combination formula voltage transformer, establish ties the primary winding of high voltage isolation mutual -inductor and 420kV higher level standard voltage transformer's secondary winding, secondary winding and the standard voltage transformer's of 330kV subordinate secondary winding establish ties, the secondary winding who constitutes combination formula voltage transformer, two -stage standard voltage transformer is free -standing for the components of a whole that can function independently from top to bottom, the electronic hydraulic system of accessible is with 420kV higher level standard voltage transformer jacking to safe altitude, be 750kV standard voltage transformer with the combination of the 330kV standard voltage transformer of subordinate, and the standard voltage transformer of 330kV subordinate independently works reliably.
Description
Technical field
The utility model relates to a kind of split serial combination type voltage transformer (VT), especially can take into account the combined type standard potential transformer being applied to the error measure of 330kV and 750kV mutual inductor on site.
Background technology
At present, it is the most common for utilizing electromagnetic type standard mutual inductor to carry out 750kV voltage transformer (VT) field calibration, the most traditional method, namely with high-precision 750kV standard potential transformer for benchmark, tested mutual inductor is once in parallel with it, get both differences by transformer error tester at secondary side and obtain.But along with standard potential transformer electric pressure brings up to 750kV, the insulation system process of monomer mutual inductor is very difficult, and manufacturing process is very difficult, and price is very expensive.750kV electromagnetic type standard potential transformer separate unit is about 1 ton of weight, height 4 ~ 5 meters, need in testing ground crane closely cooperate it lifting, movement and wiring, bring many potential safety hazards, work efficiency is not high, and in transportation, bulky, heavy standard mutual inductor very easily damage.
Moreover, existing separate unit 750kV standard potential transformer only can be applied to the site error experiment of 750kV voltage transformer (VT), and from nationwide integrated power grid structure, the quantity of 750kV transformer station is far smaller than the quantity of 330kV transformer station, how to allow 750kV standard potential transformer also can be applied to the error test of 330kV mutual inductor, thus to improve plant factor, reduce work complexity, increase economic efficiency be the problem being worth further investigation.
Utility model content
For the problems referred to above, the utility model provide a kind of rational in infrastructure, build is small and exquisite, cost low energy takes into account the split serial combination type voltage transformer (VT) being applied to the on-the-spot voltage transformer error test of 330kV and 750kV.
For achieving the above object, the utility model split serial combination type voltage transformer (VT), comprise: higher level's insulator, higher level's standard potential transformer, subordinate's insulator, coupling part, high_voltage isolation mutual inductor, subordinate's standard potential transformer and jacking gear, described jacking gear is provided with hoistable platform, and described higher level's insulator, higher level's standard potential transformer are arranged on described hoistable platform;
Hoistable platform is risen to safe altitude by jacking gear,
A winding of higher level's standard potential transformer and a windings in series of subordinate's standard potential transformer, a winding of composition split serial combination type voltage transformer (VT); The Secondary Winding of higher level's standard potential transformer and a windings in series of high_voltage isolation mutual inductor, the secondary windings in series of subordinate's standard potential transformer and high_voltage isolation mutual inductor, the Secondary Winding of composition split serial combination type voltage transformer (VT).
Further, the electric pressure of described higher level's standard potential transformer is 420kV, and the electric pressure of described subordinate standard potential transformer is 330kV.
Further, described jacking gear is hydraulic jacking device.
Beneficial effect
The utility model split serial combination type voltage transformer (VT) and method and prior art possess following beneficial effect:
The utility model split serial combination type voltage transformer (VT), a winding of higher level's standard potential transformer and a windings in series of subordinate's standard potential transformer, a winding of composition split serial combination type voltage transformer (VT); The Secondary Winding of higher level's standard potential transformer and a windings in series of high_voltage isolation mutual inductor, the secondary windings in series of subordinate's standard potential transformer and high_voltage isolation mutual inductor, the Secondary Winding of composition split serial combination type voltage transformer (VT).Tandem mode is adopted to ensure that 330kV subordinate standard potential transformer and combined type 750kV standard potential transformer can independently reliably work on the one hand, improve plant factor, reduce the insulating requirements of separate unit standard mutual inductor on the other hand, effective minimizing volume and weight of the present utility model, be convenient to transport, guarantee that experimental safe is reliable.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the utility model split serial combination type voltage transformer (VT);
Fig. 2 is the circuit theory diagrams of the utility model split serial combination type voltage transformer (VT).
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment
As shown in Figure 1, the present embodiment split serial combination type voltage transformer (VT), comprise: higher level's insulator, higher level's standard potential transformer, subordinate's insulator, coupling part, high_voltage isolation mutual inductor, subordinate's standard potential transformer and jacking gear, described jacking gear is provided with hoistable platform, and described higher level's insulator, higher level's standard potential transformer are arranged on described hoistable platform.
Upper and lower class B insulation and upper and lower grade standard voltage transformer (VT) relation: in high voltage standard voltage transformer (VT), its standard potential transformer part belongs to canonical measure equipment, this equipment cannot bear actual design high voltage, the insulator connected by its high-pressure side takes design high voltage, in order to avoid standard potential transformer part is burnt because of superpotential.
Hoistable platform is risen to safe altitude by jacking gear, and wherein said jacking gear is hydraulic jacking device.Jacking gear is by the safe altitude of hoistable platform by start bit rising 4m or more than 4m.
A winding of higher level's standard potential transformer and a windings in series of subordinate's standard potential transformer, a winding of composition split serial combination type voltage transformer (VT); The Secondary Winding of higher level's standard potential transformer and a windings in series of high_voltage isolation mutual inductor, the secondary windings in series of subordinate's standard potential transformer and high_voltage isolation mutual inductor, the Secondary Winding of composition split serial combination type voltage transformer (VT).
Off-standard voltage class 4 20kV higher level standard potential transformer 3 and 330kV subordinate standard potential transformer 7 superpose with cascaded structure and place.High_voltage isolation mutual inductor 6 is as the addition winding of the utility model secondary windings in series, and effect is that the secondary voltage of upper and lower two-stage standard potential transformer is added, and exports from subordinate's standard potential transformer 7.Upper lower uniform pressure ring 1 is positioned at higher level's insulator 2 two ends, plays and improves Electric Field Distribution, improves the effect of apparatus insulated level.Higher level's insulator 2 ensures that higher level's standard potential transformer 3 insulate reliably, subordinate's insulator 4 ensures to insulate reliably between higher level's standard potential transformer 3 and subordinate's insulator 4 and high_voltage isolation mutual inductor 6, coupling part 5 connects upper and lower standard potential transformer 3, subordinate's standard potential transformer 7 and high_voltage isolation mutual inductor 6, and ensure that three parts insulate reliably.
As shown in Figure 2, the circuit theory diagrams of the utility model split serial combination type voltage transformer (VT), by electro-hydraulic system by 420kV higher level's standard potential transformer 3 jacking to safe altitude, its winding A
1n
1(primary side voltage U
11=420kV) with a winding A of subordinate's standard potential transformer 7
2n
2(primary side voltage U
12=330kV) series connection, form a winding AN of the present utility model, the primary voltage U of cascade type instrument transformer
1=U
11+ U
12=750kV, the Secondary Winding a of higher level's standard potential transformer 3
1n
1by the Secondary Winding a of isolating transformer 6 with subordinate's standard potential transformer 7
2n
2series connection, form Secondary Winding an of the present utility model, secondary voltage is U
2.
The utility model be should be understood that; above-described embodiment; further detailed description has been carried out to the purpose of this utility model, technical scheme and beneficial effect; these are only embodiment of the present utility model; and be not used in restriction the utility model; every within spiritual principles of the present utility model; done any amendment, equivalent replacement, improvement etc.; all should be included within protection domain of the present utility model, the protection domain that protection domain of the present utility model should define with claim is as the criterion.
Claims (3)
1. a split serial combination type voltage transformer (VT), it is characterized in that, comprise: higher level's insulator, higher level's standard potential transformer, subordinate's insulator, coupling part, high_voltage isolation mutual inductor, subordinate's standard potential transformer and jacking gear, described jacking gear is provided with hoistable platform, and described higher level's insulator, higher level's standard potential transformer are arranged on described hoistable platform;
Jacking gear by the safe altitude of hoistable platform by start bit rising 4m or more than 4m,
A winding of higher level's standard potential transformer and a windings in series of subordinate's standard potential transformer, a winding of composition split serial combination type voltage transformer (VT); The Secondary Winding of higher level's standard potential transformer and a windings in series of high_voltage isolation mutual inductor, the secondary windings in series of subordinate's standard potential transformer and high_voltage isolation mutual inductor, the Secondary Winding of composition split serial combination type voltage transformer (VT).
2. split serial combination type voltage transformer (VT) according to claim 1, is characterized in that, the electric pressure of described higher level's standard potential transformer is 420kV, and the electric pressure of described subordinate standard potential transformer is 330kV.
3. split serial combination type voltage transformer (VT) according to claim 1, is characterized in that, described jacking gear is hydraulic jacking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520953623.0U CN205176251U (en) | 2015-11-27 | 2015-11-27 | Components of a whole that can function independently tandem compound formula voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520953623.0U CN205176251U (en) | 2015-11-27 | 2015-11-27 | Components of a whole that can function independently tandem compound formula voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205176251U true CN205176251U (en) | 2016-04-20 |
Family
ID=55740227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520953623.0U Expired - Fee Related CN205176251U (en) | 2015-11-27 | 2015-11-27 | Components of a whole that can function independently tandem compound formula voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205176251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301550A (en) * | 2015-11-27 | 2016-02-03 | 国网宁夏电力公司电力科学研究院 | Split series combined voltage transformer |
-
2015
- 2015-11-27 CN CN201520953623.0U patent/CN205176251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301550A (en) * | 2015-11-27 | 2016-02-03 | 国网宁夏电力公司电力科学研究院 | Split series combined voltage transformer |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20211127 |