CN205069384U - Anti highly compressed power capacitor component - Google Patents
Anti highly compressed power capacitor component Download PDFInfo
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- CN205069384U CN205069384U CN201520428995.1U CN201520428995U CN205069384U CN 205069384 U CN205069384 U CN 205069384U CN 201520428995 U CN201520428995 U CN 201520428995U CN 205069384 U CN205069384 U CN 205069384U
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Abstract
The utility model belongs to the technical field of power capacitor among the reactive compensation system of transformer substation, specifically relate to an anti highly compressed power capacitor component, plate electrode and aluminium foil bottom electrode board on the aluminium foil, and be provided with the insulating layer of a plurality of layers of parallel and level on the aluminium foil between plate electrode and the aluminium foil bottom electrode board, the plate electrode staggers with insulating film left and places on the aluminium foil to at the right -hand member hem that makes progress, aluminium foil bottom electrode board staggers with insulating film right and places to at the left end hem that makes progress, the utility model discloses a power capacitor can effectively reduce the incidence that reactive compensation system received the damage trouble, still has longer life simultaneously.
Description
Technical field
The utility model belongs to the power capacitor technical field in Substation Reactive-power Compensation system, specifically relates to a kind of power condenser element of anti-high pressure.
Background technology
The power capacitor of anti-high pressure is the important device in the reactive compensation system of 500kV transformer station; Because reactive power compensator each in bucking-out system is thrown, cut operation comparatively frequently, the parallel power condenser therefore in 500kV transformer station often bears switching overvoltage effect.Capacitor faults is caused to take place frequently, in the fault of all capacitors, bulge is that accounting example is maximum, general fuel tank varies with temperature and to expand and contraction is normal phenomenon, but when inner, partial discharge occurs, and insulating oil produces a large amount of gas, tank wall will be made to be out of shape, form obvious bulge phenomenon, the capacitor that bulge occurs can not be repaired, and can only pull down and more renew capacitor.
Capacitor is selected higher in work field intensity, and these low-quality products run under high electric field, very easily cause the fault of bulge and the action of component breakdown fuse.Actual motion shows, the position that capacity cell punctures is many in electrode edge, turning and lead-in wire and pole plate contact position, and pleat Tewo position appears in element.These local electric field strength and current density all higher, easily there is partial discharge or cross thermal burn insulation.In addition, the too high or switch of working voltage is restriked the switching overvoltage caused, and also will produce partial discharge.
Traditional not flanging hidden foil-type foil electrode, due to may loose contact between lead wire and foil electrode, and lead wire place and electrode edge electric field be concentrated, and easily partial discharge occur at lead wire place and electrode edge region; The capacitor that existing capacitor uses is when bearing overvoltage, and the electric-field intensity distribution that capacitor bears is uneven, easily partial discharge phenomenon occurs.Long-play will cause capacitor faults, directly affects effective operation of reactive compensation system.
Utility model content
The purpose of this utility model is the problems referred to above solving prior art, provide a kind of power condenser element of anti-high pressure, effectively can reduce the maximum field intensity that capacitor unit bears, make the Electric Field Distribution of capacitor even, can suppression capacitor partial discharge phenomenon significantly, reduce the occurrence probability that capacitor generating unit damages fault, thus improve the useful life of capacitor, to achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of power condenser element of anti-high pressure, it is characterized in that: comprise aluminium foil electric pole plate and aluminium foil lower electrode plate, and the concordant insulating barrier of some layers is provided with between described aluminium foil electric pole plate and aluminium foil lower electrode plate, described aluminium foil electric pole plate staggers with insulation film left and places, and it is upward folded at right-hand member, described aluminium foil lower electrode plate staggers with insulation film to the right and places, and upward folded at left end.
Preferably, described insulating barrier is three layers, is respectively the first insulating barrier, the second insulating barrier and the 3rd insulating barrier from top to bottom, and the thickness of described first insulating barrier and the 3rd insulating barrier is 12 μm, and the thickness of the second insulating barrier is 9 μm; Described first insulating barrier, the first insulating barrier and the first insulating barrier are polypropylene film.
Preferably, described aluminium foil electric pole plate and aluminium foil lower electrode plate are 5.3 ~ 5.5 μm.
Preferably, described aluminium foil electric pole plate is 15mm ~ 16mm in the length that right-hand member is upward folded, and the flanging width of foil electrode is 15mm ~ 16mm.
In sum, the utility model is owing to have employed above technical scheme, the utility model has following beneficial effect: when power capacitor unit is when bearing overvoltage, the electric-field intensity distribution of capacitor unit electrode and polypropylene film is even, effectively reduce the maximum field intensity acting on electrode and polypropylene film, to suppress or to reduce the generation of partial discharge of capacitor phenomenon, therefore power capacitor of the present utility model to be damaged effectively reducing reactive compensation system the incidence of fault, also has longer useful life simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model example or technical scheme of the prior art, introduce doing accompanying drawing required in embodiment or description of the prior art simply below, apparently, accompanying drawing in the following describes is only examples more of the present utility model, to those skilled in the art, do not paying under creationary prerequisite, other accompanying drawing can also obtained according to these accompanying drawings.
Fig. 1 is the structure chart of the power condenser element of a kind of anti-high pressure of the present utility model.
In figure: 1-aluminium foil electric pole plate, the 2-the first insulating barrier, the 3-the second insulating barrier, the 4-the three insulating barrier, 5-aluminium foil lower electrode plate, 6-foil electrode plate flanging place, 7-foil electrode panel edges overlapping position.
Embodiment
Below in conjunction with the accompanying drawing in the utility model example, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of power condenser element of anti-high pressure, comprise aluminium foil electric pole plate 1 and aluminium foil lower electrode plate 5, and the concordant insulating barrier of some layers is provided with between described aluminium foil electric pole plate 1 and aluminium foil lower electrode plate 5, described aluminium foil electric pole plate 1 staggers with insulation film left and places, and upward folded at right-hand member, described aluminium foil lower electrode plate 5 staggers with insulation film to the right and places, and upward folded at left end; Described aluminium foil electric pole plate and aluminium foil lower electrode plate are 5.3 ~ 5.5 μm; Described aluminium foil electric pole plate is 15mm ~ 16mm in the length that right-hand member is upward folded, and the flanging width of foil electrode is 15mm ~ 16mm.
In the utility model embodiment, described insulating barrier is three layers, be respectively the first insulating barrier 2, second insulating barrier 3 and the 3rd insulating barrier 4 from top to bottom, described aluminium foil electric pole plate 1, first insulating barrier 2, second insulating barrier 3 and the 3rd insulating barrier 4 and aluminium foil lower electrode plate 5 form the entirety of a close contact, described first insulating barrier 2, first insulating barrier 3 and the first insulating barrier 4 are polypropylene film, wherein, the thickness of the first insulating barrier 2 and the 3rd insulating barrier 4 is 12 μm, and the thickness of the second insulating barrier 3 is 9 μm;
Three-layer polypropylene film is set between aluminium foil electric pole plate 1 and aluminium foil lower electrode plate 5, along with the increase of foil electrode electrode thickness, upper foil electrode pole plate 1 and polypropylene film stagger projection, the stagger maximum field strength at projection and foil electrode plate flanging place of lower foil electrode pole plate 5 and polypropylene film reduces gradually, and the maximum field strength of foil electrode panel edges overlapping position 7 increases gradually, the increase of foil electrode plate thickness makes the curved surface at foil electrode pole plate edge 7 and foil electrode flanging place 6 be tending towards smooth, so the Electric Field Distribution at projection and flanging place is improved, capacitor working region is goed deep into along with the increase of foil electrode electrode thickness in the tip of foil electrode panel edges overlapping position 7, causes the increase of its surface electric field intensity, the thickness of aluminium foil is between 5.3 to 5.5 μm time, and the electric field strength of foil electrode plate projection, foil electrode flanging place 6 and foil electrode panel edges overlapping position 7 is minimum, and capacitor has best partial discharge performance.
Foil electrode pole plate flanging length can directly affect pole plate coincident place field strength distribution, foil electrode panel edges overlapping position 7 maximum field strength reduces along with the increase of flanging length, when the flanging length of foil electrode pole plate is in the scope of 15mm to 16mm, the maximum field intensity of foil electrode panel edges overlapping position 7 is minimum, also save most material simultaneously, thinner polypropylene screen can reduce film local, pole plate flanging place maximum field strength, suppress the distortion of pole plate fringe field, but field intensity on the film of capacitor element working region can be caused so larger.When first and third layer polypropylene film thickness is 15 μm and the second polypropylene film thickness is 9 μm, the field intensity on the film of capacitor working region just in time can be avoided to increase, both reduced even pole plate fringe field, reduce thin film work field intensity again.
The power condenser element manufacture method of anti-high pressure of the present utility model is as follows:
By upward folded for the left end 15mm place of aluminium foil lower electrode plate 5, successively polypropylene film is placed on foil electrode plate, and stagger left, the foil electrode of lower floor is made to reserve a right projection, again uppermost aluminium foil electric pole plate 1 is placed on polypropylene film, and stagger left, simultaneously upward folded at right-hand member, then whole capacitor unit winding is flattened, be made into capacitor element, make multiple such capacitor element, they are in parallel or be connected in series by Internal fuse, form an overall capacitor element, again with case shell, binding post, the assemblings such as sleeve pipe, just can be made into the power capacitor of an anti-high pressure.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; allly to use within novel spirit and principle at this, any amendment done, equivalent replacement, improvement etc., within the protection range that all should be included in utility model.
Claims (4)
1. the power condenser element of an anti-high pressure, it is characterized in that: comprise aluminium foil electric pole plate and aluminium foil lower electrode plate, and the concordant insulating barrier of some layers is provided with between described aluminium foil electric pole plate and aluminium foil lower electrode plate, described aluminium foil electric pole plate staggers with insulation film left and places, and it is upward folded at right-hand member, described aluminium foil lower electrode plate staggers with insulation film to the right and places, and upward folded at left end.
2. the power condenser element of a kind of anti-high pressure according to claim 1, it is characterized in that: described insulating barrier is three layers, be respectively the first insulating barrier, the second insulating barrier and the 3rd insulating barrier from top to bottom, the thickness of described first insulating barrier and the 3rd insulating barrier is 12 μm, and the thickness of the second insulating barrier is 9 μm.
3. the power condenser element of a kind of anti-high pressure according to claim 1, is characterized in that: described aluminium foil electric pole plate and aluminium foil lower electrode plate are 5.3 ~ 5.5 μm.
4. the power condenser element of a kind of anti-high pressure according to claim 1, is characterized in that: described aluminium foil electric pole plate is 15mm ~ 16mm in the length that right-hand member is upward folded, the flanging width of foil electrode is 15mm ~ 16mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520428995.1U CN205069384U (en) | 2015-06-19 | 2015-06-19 | Anti highly compressed power capacitor component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520428995.1U CN205069384U (en) | 2015-06-19 | 2015-06-19 | Anti highly compressed power capacitor component |
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| Publication Number | Publication Date |
|---|---|
| CN205069384U true CN205069384U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520428995.1U Active CN205069384U (en) | 2015-06-19 | 2015-06-19 | Anti highly compressed power capacitor component |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185589A (en) * | 2015-06-19 | 2015-12-23 | 广西电网有限责任公司电力科学研究院 | 35kV high-voltage power capacitor |
| CN108172843A (en) * | 2017-12-29 | 2018-06-15 | 上海神力科技有限公司 | A kind of bipolar panel assembly of fuel cell pile |
-
2015
- 2015-06-19 CN CN201520428995.1U patent/CN205069384U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185589A (en) * | 2015-06-19 | 2015-12-23 | 广西电网有限责任公司电力科学研究院 | 35kV high-voltage power capacitor |
| CN108172843A (en) * | 2017-12-29 | 2018-06-15 | 上海神力科技有限公司 | A kind of bipolar panel assembly of fuel cell pile |
| CN108172843B (en) * | 2017-12-29 | 2023-11-07 | 上海神力科技有限公司 | Bipolar plate device of fuel cell stack |
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