CN201345293Y - Combined high-voltage current and voltage transformer - Google Patents
Combined high-voltage current and voltage transformer Download PDFInfo
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- CN201345293Y CN201345293Y CNU200820097783XU CN200820097783U CN201345293Y CN 201345293 Y CN201345293 Y CN 201345293Y CN U200820097783X U CNU200820097783X U CN U200820097783XU CN 200820097783 U CN200820097783 U CN 200820097783U CN 201345293 Y CN201345293 Y CN 201345293Y
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Abstract
The utility model discloses a combined high-voltage current and voltage transformer, which comprises a current main body and a voltage main body, wherein, the current main body and the voltage main body are arranged integrally. The current main body adopts a current transformer, and a primary current input terminal and a primary current output terminal are arranged on the current main body; the current transformer adopts a capacitance-type structure for major insulation; the voltage main body comprises an intermediate transformer; the primary voltage of the intermediate transformer is led from an intermediate capacitance tap of the current transformer so as to lead the voltage main body to form a capacitance-type voltage transformer; and the secondary current of the current transformer and the secondary voltage of the voltage transformer are led out respectively. The combined high-voltage current and voltage transformer achieves the purpose that two functions of the current transformer and the voltage transformer can be completed in one device; in addition, a condenser divider and a coupling capacitor of the capacitance-type voltage transformer are omitted, and the manufacturing cost is lowered; the combined high-voltage current and voltage transformer has the advantages of small occupied area, convenient installation and use, conservation for manufacturing cost, use cost and maintenance cost and obvious economic benefits and social benefits; and the combined high-voltage current and voltage transformer has obvious advantages when being used in a high-voltage system, and the production cost can be decreased to 50 percent.
Description
Technical field
The utility model relates to a kind of electric power system instrument transformer, particularly a kind of combined high-tension current potential transformer.
Background technology
The high-voltage mutual inductor that uses on the electrical network, particularly 110KV reaches the instrument transformer of going up electric pressure and is stand-alone configuration, be that current transformer and voltage transformer are independently individual, between every instrument transformer on the power station, install and require that all sufficient insulating space and distance are arranged, make accounting for of the power station area of turning up the soil increase manyfold.Simultaneously, independently current transformer and voltage transformer have also been wasted manufactured materials greatly, cause manufacturing cost to increase, thereby have increased the operation and maintenance cost.In the prior art, on the market with patent document some composite type electric current and voltage transformers are disclosed, but all be under system voltage is not very high situation, not use, and, all be independently current transformer and independently voltage transformer simply make up and piece together, can not be applicable to high pressure and superhigh pressure occasion.
Therefore, need a kind of combined high-tension current potential transformer, current transformer and voltage transformer are made one, can be applicable to high pressure and extra high voltage system, an equipment can be finished current transformer and two kinds of functions of voltage transformer, reduces floor space, saves manufacturing, operation and maintenance cost.
The utility model content
The purpose of this utility model is to provide a kind of combined high-tension current potential transformer, current transformer and voltage transformer are made organic one, and the insulation of the two is associated, be not simply to piece together and make up, can be applicable to high pressure and extra high voltage system, can realize that an equipment finishes the purpose of current transformer and two kinds of functions of voltage transformer, volume is little, reduce floor space, save manufacturing, operation and maintenance cost.
Combined high-tension current potential transformer of the present utility model, comprise the electric current main body and the voltage main body that are set to one, described electric current main body is a current transformer, be provided with primary current input and primary current output, it is characterized in that: the main insulation of described current transformer is the capacitor type structure, the voltage main body comprises intermediate transformer, and the primary voltage of described intermediate transformer draws the electric capacity tap from current transformer, makes the voltage main body constitute capacitance type potential transformer; The secondary current of described current transformer and the secondary voltage of voltage transformer are drawn respectively.
Further, described combined high-tension current potential transformer is an oil immersed type;
Further, described current transformer is an inverted type current transformer;
Further, described Current Transformer Secondary electric current output is provided with two above capacitance plates and wraps up high pressure crimped paper or polypropylene film, according to the size of the primary voltage of the intermediate transformer of voltage main body, lead-in wire being set as the intermediate capacitance tap from the main capacitance screen of correspondence;
Further, the once lead-in wire outside that described intermediate transformer and intermediate capacitance tap link uses polytetrafluoroethylmaterial material as insulation, and adopts the coaxial capacitance structure outside insulating barrier, and the lead-in wire two ends are provided with grading ring;
Further, described current transformer is arranged at combined high-tension current potential transformer top, the voltage main body is arranged at the combined high-tension current potential transformer bottom, connect by post insulator between current transformer and the voltage main body, intermediate capacitance tap passage is set in the described post insulator, and the intermediate capacitance tap causes intermediate transformer by intermediate capacitance tap passage;
Further, described current transformer is fixedly installed in the housing of profiling, between the primary current input of current transformer and the primary current output guide rod is set, guide rod guarantees to seal between the housing inside and outside by the flange place of housing, lower housing portion is provided with flange I, described voltage main body is fixedly installed in the fuel tank, fuel tank top is provided with flange II, described post insulator is high strength electroceramice or silicone rubber composite bushing, and two ends are provided with respectively the flange III of fixedlying connected and being sealed and matched with flange II with flange I up and down;
Further, described combination transformer top is provided with expander, the described boxlike of making for the expander stainless steel or corrugated; The secondary voltage leading-out terminal box of the secondary current leading-out terminal box of described current transformer and voltage transformer is located at the fuel tank both sides external respectively, described lead-in wire guarantees to seal between the fuel tank inside and outside by the oil tank wall place, described post insulator is provided with the secondary current lead channels of current transformer, the secondary current lead-in wire is drawn by the secondary current lead channels, and insulation is provided with between the secondary current lead channels of described current transformer and the intermediate capacitance tap passage; The inner chamber insulating oil of described combination transformer is transformer oil or detergent alkylate.
The beneficial effects of the utility model are: combined high-tension current potential transformer of the present utility model, employing is in the structure of the electric capacity place of current transformer main insulation lead-out wire as voltage transformer intermediate transformer primary voltage, utilize effective insulation measures, make current transformer and voltage transformer make one, use the Main Insulation Structure of Electric of current transformer, omit the capacitor voltage divider and the coupling capacitor of capacitance type potential transformer, the cost of product is reduced greatly, avoid in the past in the low-voltage system two kinds of instrument transformers simply to piece together and make up, and can be applicable to high pressure and extra high voltage system, can realize that an equipment finishes the purpose of current transformer and two kinds of functions of voltage transformer, and good manufacturability, easy to install, safeguard simple, save and make, the operation and maintenance cost, have remarkable economic efficiency and social benefit, and because the high-voltage mutual inductor cost is higher, so the utility model system voltage grade is high more, its advantage is obvious more, and product cost can reduce to 50%; Combined high-tension current potential transformer is an oil immersed type, is beneficial to environmental protection; Current transformer adopts inverted type current transformer, and the primary conductive bar is short, and outer naked layer, produces little, the rapid heat dissipation of heat, and the dynamic and thermal stability performance is good; Current transformer is provided with two above capacitance plates, and each main capacitance screen is provided for all pressing and the intermediate capacitance tap of the primary voltage of intermediate transformer, can be convenient to multiple mode and connect; Post insulator between current transformer and the voltage main body, novel structure is simply light, and volume is little, and good insulation preformance makes that its compact conformation, integrated cost are low, the simplicity of design in power station, floor space be littler; Insulating barrier is established in the intermediate transformer outside that once goes between, and adopts the coaxial capacitance structure outside insulating barrier, all presses insulation effect good; Current transformer casing adopts the profiling shell, reduces equipment volume in the time of economical with materials, makes structure compact more; Adopt flange to be connected between fuel tank and shell and the post insulator, be connected firmly good airproof performance.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is Fig. 1 fragmentary side cross-sectional view;
Fig. 3 is the utility model elementary diagram.
Embodiment
Fig. 1 is a structural representation of the present utility model, Fig. 2 is Fig. 1 fragmentary side cross-sectional view, as shown in the figure: the combined high-tension current potential transformer of present embodiment, comprise the electric current main body and the voltage main body that are set to one, the electric current main body is the capacitor type inverted type current transformer, be provided with primary current input 11 and primary current output, current transformer 1 secondary winding and lead-in wire thereof are outer to be provided with two capacitance plates and to wrap up polypropylene film; The voltage main body comprises intermediate transformer 21, the primary voltage of intermediate transformer 21 draws tap 13 in the main capacitance screen of the correspondence of current transformer 1, make the voltage main body constitute capacitance type potential transformer, intermediate transformer 21 uses polytetrafluoroethylmaterial materials as insulation with once lead-in wire 22 outsides that intermediate capacitance tap 13 links, the lead wire insulation layer adopts the coaxial capacitance structure outward simultaneously, and the lead-in wire two ends are provided with grading ring; The secondary voltage of the secondary current of current transformer 1 and voltage transformer 2 is drawn respectively; Combined high-tension current potential transformer is an oil immersed type;
Current transformer 1 is fixedly installed in the cast aluminum casings 4 of profiling and is arranged at combined high-tension current potential transformer top, between current transformer 1 primary current input 11 and the output 14 guide rod 15 is set, described guide rod 15 guarantees to seal between housing 4 inside and outsides by the flange place of housing 4, and lower housing portion is provided with flange I 41; The voltage main body is fixedly installed in the fuel tank 5 and is arranged at the combined high-tension current potential transformer bottom, fuel tank top is provided with flange II 51, post insulator 3 by high strength electroceramice or silicone rubber composite bushing material between current transformer 1 and the voltage main body connects, and post insulator is provided with respectively the cast aluminium flange III32 of fixedlying connected with flange II 51 and being sealed and matched with flange I 41 in two ends about in the of 3; The secondary current lead channels 33 of intermediate capacitance tap passage 31 summation current transformers 1 is set in the post insulator 3, intermediate capacitance tap 13 links by the primary voltage lead-in wire of intermediate capacitance tap passage 31 with intermediate transformer 21, the secondary current lead-in wire of current transformer 1 causes the secondary current leading-out terminal box 16 of current transformer 1 by secondary current lead channels 33, the secondary voltage leading-out terminal box 23 of secondary current leading-out terminal box 16 and voltage transformer 2 is located at fuel tank 5 both sides external respectively, and secondary current lead-in wire 12 and secondary voltage are drawn lead-in wire and guaranteed to seal between the fuel tank inside and outside by fuel tank 5 wall places; The inner chamber insulating oil 7 that combination transformer is set that insulate between intermediate capacitance tap passage 31 and the secondary current lead channels 33 is transformer oil, certainly, also can be detergent alkylate, can both realize goal of the invention.
The combination transformer top is provided with expander 6, the box structure that expander 6 is made for stainless steel.
Certainly, capacitance plate quantity is according to the difference of system voltage, and quantity also has difference; Current transformer is not limited to inverted, also can be just vertical; Combination transformer is not limited to oil immersed type, all can realize goal of the invention.
Fig. 2 is the utility model elementary diagram, and as shown in the figure: P1, C1 are the input of primary current; P2, C2 are the output of primary current; C1 is the electric current main body high-voltage capacitance of combination transformer; C2 is that piezoelectricity holds in the electric current main body of combination transformer; A, XT are the intermediate transformer high pressure of the voltage main body first and last end that once goes between; S1,1S2,2S1,2S2 ... nS1, nS2 are combination transformer electric current secondary leading-out terminal; K1, K2, K3 ... K7 and P1, P2, P3 ... P7 is the first and last end that intermediate transformer is regulated winding; 1a, 1n, 2a, 2n, da, dn are combination transformer voltage secondary leading-out terminal; Df1, df2, df3 are fast saturable reactor terminal; δ is a communication carrier wave terminal; Y1, Y2, Y3 ... K5 and L1, L2, L3 ... L5 is the first and last end that compensation reactor is regulated winding, and A1, X1 are the first and last end of compensation reactor winding main coil; MOA is a lightning arrester; N is the earth terminal of intermediate transformer.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1. combined high-tension current potential transformer, comprise the electric current main body and the voltage main body that are set to one, described electric current main body is a current transformer, be provided with primary current input (11) and primary current output (14), it is characterized in that: the main insulation of described current transformer (1) is the capacitor type structure, the voltage main body comprises intermediate transformer (21), the primary voltage of described intermediate transformer (21) draws the electric capacity tap (13) from current transformer (1), makes the voltage main body constitute capacitance type potential transformer; The secondary voltage of the secondary current of described current transformer (1) and voltage transformer (2) is drawn respectively.
2. combined high-tension current potential transformer according to claim 1 is characterized in that: described combined high-tension current potential transformer is an oil immersed type.
3. combined high-tension current potential transformer according to claim 1 and 2 is characterized in that: described current transformer (1) is an inverted type current transformer.
4. combined high-tension current potential transformer according to claim 3, it is characterized in that: the main insulation of described current transformer (1) is provided with two above main capacitance screens, and wrapping high pressure crimped paper or polypropylene film, according to the size of the primary voltage of the intermediate transformer of voltage main body, lead-in wire being set as intermediate capacitance tap (13) from the main capacitance screen of correspondence.
5. combined high-tension current potential transformer according to claim 3, it is characterized in that: described intermediate transformer (21) uses polytetrafluoroethylmaterial material as insulation with once lead-in wire (22) outside that intermediate capacitance tap (13) links, and outside the lead wire insulation layer, adopt the coaxial capacitance structure, once lead-in wire (22) lead-in wire two ends are provided with grading ring.
6. according to claim 1 or 2 or 4 or 5 described combined high-tension current potential transformers, it is characterized in that: described current transformer (1) is arranged at combined high-tension current potential transformer top, the voltage main body is arranged at the combined high-tension current potential transformer bottom, connect by post insulator (3) between current transformer (1) and the voltage main body, intermediate capacitance tap passage (31) is set in the described post insulator (3), and intermediate capacitance tap (13) causes intermediate transformer (21) by intermediate capacitance tap passage (31).
7. combined high-tension current potential transformer according to claim 3, it is characterized in that: described current transformer (1) is arranged at combined high-tension current potential transformer top, the voltage main body is arranged at the combined high-tension current potential transformer bottom, connect by post insulator (3) between current transformer (1) and the voltage main body, intermediate capacitance tap passage (31) is set in the described post insulator (3), and intermediate capacitance tap (13) causes intermediate transformer (21) by intermediate capacitance tap passage (31).
8. combined high-tension current potential transformer according to claim 6, it is characterized in that: described current transformer (1) is fixedly installed in the housing (4) of profiling, between the primary current input (11) of current transformer (1) and the primary current output (14) guide rod (15) is set, guide rod (15) is located to guarantee to seal between housing (4) inside and outside by housing (4), lower housing portion is provided with flange I (41), described voltage main body is fixedly installed in the fuel tank (5), fuel tank top is provided with flange II (51), described post insulator (3) is high strength electroceramice or silicone rubber composite bushing, and two ends are provided with respectively the flange III (32) of fixedlying connected and being sealed and matched with flange II (51) with flange I (41) up and down.
9. combined high-tension current potential transformer according to claim 7, it is characterized in that: described current transformer (1) is fixedly installed in the housing (4) of profiling, the primary current input (11) and the primary current output of current transformer (1) are provided with guide rod (15), guide rod (15) is located to guarantee to seal between housing (4) inside and outside by housing (4), lower housing portion is provided with flange I (41), described voltage main body is fixedly installed in the fuel tank (5), fuel tank top is provided with flange II (51), described post insulator (3) is high strength electroceramice or silicone rubber composite bushing, and two ends are provided with respectively the flange III (32) of fixedlying connected and being sealed and matched with flange II (51) with flange I (41) up and down.
10. according to Claim 8 or 9 described combined high-tension current potential transformers, it is characterized in that: described combination transformer top is provided with expander (6), and described is the boxlike made of expander (6) stainless steel or corrugated; The secondary current leading-out terminal box (16) of described current transformer (1) and the secondary voltage leading-out terminal box (23) of voltage transformer (2) are located at fuel tank (5) both sides external respectively, described lead-in wire guarantees to seal between the fuel tank inside and outside by fuel tank (5) wall place, described post insulator (3) is provided with the secondary current lead channels (33) of current transformer (1), secondary current lead-in wire (12) is drawn by secondary current lead channels (33), and insulation is provided with between the secondary current lead channels (33) of described current transformer (1) and the intermediate capacitance tap passage (31); The inner chamber insulating oil (7) of described combination transformer is transformer oil or detergent alkylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820097783XU CN201345293Y (en) | 2008-03-11 | 2008-03-11 | Combined high-voltage current and voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820097783XU CN201345293Y (en) | 2008-03-11 | 2008-03-11 | Combined high-voltage current and voltage transformer |
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| Publication Number | Publication Date |
|---|---|
| CN201345293Y true CN201345293Y (en) | 2009-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820097783XU Expired - Lifetime CN201345293Y (en) | 2008-03-11 | 2008-03-11 | Combined high-voltage current and voltage transformer |
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| CN (1) | CN201345293Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299387B (en) * | 2008-03-11 | 2010-09-29 | 徐文 | Combined high-tension current potential transformer |
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2008
- 2008-03-11 CN CNU200820097783XU patent/CN201345293Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299387B (en) * | 2008-03-11 | 2010-09-29 | 徐文 | Combined high-tension current potential transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Bosen Electric Group High-voltage Electrical Apparatus Co., Ltd. Assignor: Xu Wen Contract record no.: 2010500000057 Denomination of utility model: Combined high-tension current potential transformer Granted publication date: 20091111 License type: Exclusive License Record date: 20100913 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20091111 Effective date of abandoning: 20080311 |