CN108987049A - A kind of capacitor voltage transformer of power construction oil-leakage-prevention - Google Patents
A kind of capacitor voltage transformer of power construction oil-leakage-prevention Download PDFInfo
- Publication number
- CN108987049A CN108987049A CN201810969196.3A CN201810969196A CN108987049A CN 108987049 A CN108987049 A CN 108987049A CN 201810969196 A CN201810969196 A CN 201810969196A CN 108987049 A CN108987049 A CN 108987049A
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- CN
- China
- Prior art keywords
- insulator
- fuel tank
- oil
- leakage
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The present invention relates to capacitance type potential transformer technical fields, more particularly to a kind of capacitor voltage transformer of power construction oil-leakage-prevention, including insulator and fuel tank, insulator inner tip is provided with expander, once terminal board is arranged in insulator outer tip end, insulator is internally provided with capacitor cell, insulator bottom end is provided with fuel tank, the double-legged lead of capacitor cell passes through insulator and extends in oil-feed tank, observation window is respectively arranged on fuel tank right side wall, fuel feeding valve and fuel outlet valve, secondary terminal box is provided on the left side wall of fuel tank, fuel tank internal is provided with middle pressure transformer, middle pressure transformer one end is connect with the double-legged lead of capacitor cell respectively, the middle pressure transformer other end is connect with secondary terminal box, the configuration of the present invention is simple, has the function of oil-leakage-prevention, and oil-leakage-prevention performance is high, while can be avoided in the insulating oil leakage to fuel tank in insulator, The oil that can be avoided in fuel tank is leaked out from secondary terminal box, is had broad application prospects.
Description
Technical field
The present invention relates to capacitance type potential transformer technical fields, and in particular to a kind of capacitor of power construction oil-leakage-prevention
Voltage transformer.
Background technique
Capacitance type potential transformer be voltage is extracted by series capacitor, then through transformer transformation as meter, relay protect
Shield etc. voltage source voltage transformer, capacitance type potential transformer carrier frequency can also be coupled to power transmission line be used for it is long-distance
Communication, distant place measurement, HF protection for transmission line, remote control, the telex of selectivity etc..Therefore and conventional electromagnetic potential mutual inductance
Device is compared, capacitance type potential transformer device in addition to it can prevent from being saturated because of iron core of voltage transformer and cause ferromagnetic resonance, economical and
There are also many superior places in safety.
Capacitance type potential transformer is mainly made of capacitive divider and middle pressure transformer.Capacitive divider is by insulator and dress
Full of the insulating oil for keeping 0.1MPa positive pressure in several series capacitors composition wherein, insulator, and it is flat with steel corrugated pipe
For weighing apparatus varying environment to keep oil pressure, capacitance partial pressure can be used as coupling capacitor connection carrier equipment.Middle pressure transformer is by mounted in close
Transformer in oil sealing case, compensation reactor and damping unit composition, the space nitrogen charging of top of oil-tank.First winding be divided into it is main around
Group and fine tuning winding, a low-loss reactor of connecting between primary side and first winding.It is non-due to capacitance type potential transformer
Linear impedance and intrinsic capacitor cause ferromagnetic resonance in capacitance type potential transformer sometimes, thus are inhibited with damping unit
Resonance, damping unit are made of resistance and reactor, are connected across in secondary winding, and damping unit has very high resistance under normal circumstances
Anti-, when ferromagnetic resonance causes overvoltage, before middle pressure transformer is affected, reactor has been saturated only surplus ohmic load,
It is lowered oscillation energy quickly.
However existing capacitance type potential transformer occurs abnormal may be as caused by a variety of causes, one of which is exactly
Due to causing fuel tank member oil level excessively high in the insulating oil leakage oil-feed tank in insulator, so that secondary voltage increases extremely, make
At substation fault, therefore it is badly in need of designing a kind of capacitance type potential transformer of oil-leakage-prevention.
Summary of the invention
In view of the deficiencies of the prior art, the invention discloses a kind of capacitor voltage transformer of power construction oil-leakage-prevention,
For solving the oil leak situation of capacitance type potential transformer, so that secondary voltage increases extremely, substation fault is caused, to make
The problem of at economic loss.
Specific technical solution is as follows:
A kind of capacitor voltage transformer of power construction oil-leakage-prevention, including insulator and fuel tank, the insulator inner tip
It is provided with expander, once terminal board is arranged in the insulator outer tip end, and the insulator is internally provided with capacitor cell, described
Insulator bottom end is provided with fuel tank, and the double-legged lead of the capacitor cell passes through insulator and extends in oil-feed tank, the fuel tank right side wall
On be respectively arranged with observation window, fuel feeding valve and fuel outlet valve, secondary terminal box, the fuel tank are provided on the left side wall of the fuel tank
It is internally provided with middle pressure transformer, described middle pressure transformer one end is connect with the double-legged lead of capacitor cell respectively, described
The middle pressure transformer other end is connect with secondary terminal box, and gasket, the middle buckling pressure are provided on the fuel tank left side wall
Device lead passes through gasket and connect with secondary terminal box；
Preferably, the capacitor cell includes high voltage arm capacitor and low-voltage arm capacitor；
Preferably, the junction of insulator and fuel tank is provided with medium voltage end on the double-legged lead of the capacitor cell
Son；
Preferably, the outside of the intermediate voltage terminal is provided with communication terminal casing；
Preferably, the middle pressure transformer includes compensation reactor and damping unit；
Preferably, bottom end is provided with earth plate on the left of the fuel tank, and the middle pressure transformer passes through ground connection plate earthing；
Preferably, insulating oil is filled with inside the insulator.
The utility model has the advantages that
For the present invention by being provided with communication terminal casing in the junction of insulator and fuel tank, communication terminal casing will be intermediate electric
Pressure side attached bag wraps, so that insulator and fuel tank be sealed, has blocked the connection due to the double-legged lead of capacitor cell and has caused porcelain
The case where covering the leakage of interior insulation oil, to avoid the occurrence of the phenomenon that secondary voltage increases extremely；In addition, secondary terminal box is in
In being provided with gasket on the side wall of fuel tank between pressure transformer, so as to avoid the first oily from secondary terminal box of fuel tank internal
It leaks out, further reduced the failure that capacitance type potential transformer occurs due to oil leakage phenomenon.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1: the capacitor voltage transformer structural schematic diagram of power construction oil-leakage-prevention.
Appended drawing reference is as follows: 1, insulator, 2, expander, 3, terminal boards, 4, capacitor cell, 401, high voltage arm capacitor,
402, low-voltage arm capacitor, 5, communication terminal casing, 6, intermediate voltage terminal, 7, fuel tank, 8, observation window, 9, fuel feeding valve, 10, drain the oil
Valve, 11, earth plate, 12, secondary terminal box, 13, compensation reactor, 14, damping unit, 15, gasket.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Referring to Fig. 1: a kind of capacitor voltage transformer of power construction oil-leakage-prevention, including insulator 1 and fuel tank 7, in insulator 1
Portion top is provided with expander 2, and once terminal board 3, insulator 1 are internally provided with capacitor cell 4 to the setting of 1 outer tip end of insulator,
1 bottom end of insulator is provided with fuel tank 7, and the double-legged lead of capacitor cell 4 passes through insulator 1 and extends in oil-feed tank 7, on 7 right side wall of fuel tank
It is respectively arranged with observation window 8, fuel feeding valve 9 and fuel outlet valve 10, is provided with secondary terminal box 12 on the left side wall of fuel tank 7, in fuel tank 7
Portion is provided with middle pressure transformer, and middle pressure transformer one end is connect with the double-legged lead of capacitor cell 4 respectively, pressure transformer is another
One end is connect with secondary terminal box 12, is provided with gasket 15 on 7 left side wall of fuel tank, middle pressure transformer lead pass through gasket
15 connect with secondary terminal box 12.
Specifically, capacitor cell 4 includes high voltage arm capacitor 401 and low-voltage arm capacitor 402, the double-legged lead of capacitor cell 4
On the junction of insulator 1 and fuel tank 7 is provided with intermediate voltage terminal 6, the outside of intermediate voltage terminal 6 is provided with communication terminal
Casing 5, middle pressure transformer include compensation reactor 13 and damping unit 14, and 7 left side bottom end of fuel tank is provided with earth plate 11, in
Pressure transformer is grounded by earth plate 11, and insulating oil is filled with inside insulator 1.
In use, can inject first oil into fuel tank 7 by fuel feeding valve 9, staff can be observed the present apparatus by observation window 8
Oil level in fuel tank 7, wherein expander 2 is swollen when the volume of mutual inductor internal transformer oil changes because of temperature change
Corresponding variation occurs for swollen 2 main volume of device, plays the role of volume compensation, communication ends sub-set 5 plays sealing function, avoids
In insulating oil leakage to fuel tank 7 in insulator 1, thus the case where causing electric voltage exception, the middle pressure transformer inside fuel tank 7 passes through
Earth plate 11 is connect with ground, and wherein the gasket 15 on 7 left side wall of fuel tank effectively prevents first oil from secondary terminal box 12
Place leaks out, and staff can drain the oil to fuel tank 7 by fuel outlet valve 10.
The configuration of the present invention is simple has the function of oil-leakage-prevention, and oil-leakage-prevention performance is high, and the insulating oil that can be avoided in insulator seeps
While draining in fuel tank, the oil that also can be avoided in fuel tank is leaked out from secondary terminal box, is had broad application prospects.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. a kind of capacitor voltage transformer of power construction oil-leakage-prevention, including insulator (1) and fuel tank (7), it is characterised in that: institute
It states insulator (1) inner tip to be provided with expander (2), once terminal board (3) are arranged in insulator (1) outer tip end, described
Insulator (1) is internally provided with capacitor cell (4), and insulator (1) bottom end is provided with fuel tank (7), pair of the capacitor cell (4)
Foot lead passes through insulator (1) and extends in oil-feed tank (7), is respectively arranged with observation window (8), oiling on fuel tank (7) right side wall
Valve (9) and fuel outlet valve (10) are provided with secondary terminal box (12) on the left side wall of the fuel tank (7), are set inside the fuel tank (7)
It is equipped with middle pressure transformer, described middle pressure transformer one end is connect with the double-legged lead of capacitor cell (4) respectively, the middle pressure
The transformer other end is connect with secondary terminal box (12), is provided with gasket (15) on fuel tank (7) left side wall, it is described in
Pressure transformer lead passes through gasket (15) and connect with secondary terminal box (12).
2. the capacitor voltage transformer of power construction oil-leakage-prevention according to claim 1, it is characterised in that: the capacitor
Unit (4) includes high voltage arm capacitor (401) and low-voltage arm capacitor (402).
3. the capacitor voltage transformer of power construction oil-leakage-prevention according to claim 1, it is characterised in that: the capacitor
The junction of insulator (1) and fuel tank (7) is provided with intermediate voltage terminal (6) on the double-legged lead of unit (4).
4. the capacitor voltage transformer of power construction oil-leakage-prevention according to claim 3, it is characterised in that: the centre
The outside of voltage terminal (6) is provided with communication terminal casing (5).
5. the capacitor voltage transformer of power construction oil-leakage-prevention according to claim 1, it is characterised in that: in described
Pressure transformer includes compensation reactor (13) and damping unit (14).
6. the capacitor voltage transformer of power construction oil-leakage-prevention according to claim 1, it is characterised in that: the fuel tank
(7) left side bottom end is provided with earth plate (11), and the middle pressure transformer is grounded by earth plate (11).
7. the capacitor voltage transformer of power construction oil-leakage-prevention according to claim 1, it is characterised in that: the insulator
(1) internal to be filled with insulating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969196.3A CN108987049A (en) | 2018-08-23 | 2018-08-23 | A kind of capacitor voltage transformer of power construction oil-leakage-prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969196.3A CN108987049A (en) | 2018-08-23 | 2018-08-23 | A kind of capacitor voltage transformer of power construction oil-leakage-prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108987049A true CN108987049A (en) | 2018-12-11 |
Family
ID=64547164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810969196.3A Pending CN108987049A (en) | 2018-08-23 | 2018-08-23 | A kind of capacitor voltage transformer of power construction oil-leakage-prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108987049A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545513A (en) * | 2018-12-27 | 2019-03-29 | 象山宏强电气制造有限公司 | A kind of capacitance type potential transformer device of the anti-oil leakage protection of pressure-releasing type |
| CN110487351A (en) * | 2019-08-20 | 2019-11-22 | 国网天津市电力公司电力科学研究院 | A kind of oil level visual type capacitance type potential transformer |
| CN113310635A (en) * | 2021-05-26 | 2021-08-27 | 广西电网有限责任公司南宁供电局 | CVT oil tank defect detecting and processing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328015Y (en) * | 1998-05-08 | 1999-07-07 | 西安电力电容器厂 | Capacitor voltage mutual inductor with harmonic detection function |
| CN203277054U (en) * | 2013-05-24 | 2013-11-06 | 北变变压器（上海）有限公司 | Novel low-voltage leading-out terminal box for oil-immersed rectifier transformer for variable frequency speed regulation |
| CN207637621U (en) * | 2017-12-03 | 2018-07-20 | 江苏华江科技有限公司 | A kind of aluminium alloy casting capacitance type potential transformer fuel tank |
-
2018
- 2018-08-23 CN CN201810969196.3A patent/CN108987049A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328015Y (en) * | 1998-05-08 | 1999-07-07 | 西安电力电容器厂 | Capacitor voltage mutual inductor with harmonic detection function |
| CN203277054U (en) * | 2013-05-24 | 2013-11-06 | 北变变压器（上海）有限公司 | Novel low-voltage leading-out terminal box for oil-immersed rectifier transformer for variable frequency speed regulation |
| CN207637621U (en) * | 2017-12-03 | 2018-07-20 | 江苏华江科技有限公司 | A kind of aluminium alloy casting capacitance type potential transformer fuel tank |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545513A (en) * | 2018-12-27 | 2019-03-29 | 象山宏强电气制造有限公司 | A kind of capacitance type potential transformer device of the anti-oil leakage protection of pressure-releasing type |
| CN110487351A (en) * | 2019-08-20 | 2019-11-22 | 国网天津市电力公司电力科学研究院 | A kind of oil level visual type capacitance type potential transformer |
| CN113310635A (en) * | 2021-05-26 | 2021-08-27 | 广西电网有限责任公司南宁供电局 | CVT oil tank defect detecting and processing device |
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| PB01 | Publication | ||
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Application publication date: 20181211 |