CN1967955A - Gas insulation switch device and oil immersed transformer connection structure - Google Patents
Gas insulation switch device and oil immersed transformer connection structure Download PDFInfo
- Publication number
- CN1967955A CN1967955A CNA2006101437054A CN200610143705A CN1967955A CN 1967955 A CN1967955 A CN 1967955A CN A2006101437054 A CNA2006101437054 A CN A2006101437054A CN 200610143705 A CN200610143705 A CN 200610143705A CN 1967955 A CN1967955 A CN 1967955A
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- oil
- gas
- conductor
- mentioned
- type transformer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/55—Oil reservoirs or tanks; Lowering means therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/021—Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/06—Non-enclosed substations; Substations with enclosed and non-enclosed equipment gas-insulated
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention provides a connecting structure of a gas insulated switchgear and an oil-immersed transformer in which miniaturization and weight reduction are attained by suppressing axial length. One cone shaped insulation spacer 3 dividing insulating gas and insulating oil is arranged between the connection container 1 on a gas insulated switchgear 16 side in which the insulating gas is enclosed and the connection container 2 on an oil-immersed transformer 17 side in which the insulating oil is enclosed. The cone shaped insulating spacer 3 has a cone shape or a cross section shape similar thereto, having one side with projected surface and the other side with recessed surface, and the projected surface side is arranged on the gas insulated switchgear 16 side while the recessed side on the oil-immersed transformer 17 side. A buried conductor 4 for connecting the main circuit conductor 8 on the gas insulated switchgear 16 side to the flexible conductor 6 as the main circuit conductor of the oil-immersed transformer 17 is provided at the center portion of the cone shaped insulating spacer 3.
Description
Technical field
The present invention relates to a kind of gas-insulated switchgear device of electric substation and joint construction of oil-immersed type transformer of being arranged on.
Background technology
The gas-insulated switchgear device that is arranged on electric substation is that the configuration main circuit conductor constitutes in the closed container of having enclosed insulating properties gas, on the other hand, oil-immersed type transformer is to constitute in the closed container of having enclosed insulating oil, as both joint constructions, for example use the high voltage of oil-immersed type transformer is exported oil-gas molded cannula that a side level is installed in the side of oil-immersed type transformer, and be connected with gas-insulated switchgear device.But if use this oil-gas molded cannula, then axial length becomes big, is an impediment to the miniaturization and with equipment of reducing of floor space.Therefore, joint construction as gas-insulated switchgear device and oil-immersed type transformer, known have a leakage that causes for the pressure differential that prevents insulating properties gas and insulating oil, (for example between gas-insulated switchgear device and oil-immersed type transformer, form the medial compartment that separates with 2 insulation partition, with reference to patent documentation 1---the spy opens clear 57-97306 communique, the spy opens clear 57-No. 97308 communiques with patent documentation 2---spy opens clear 57-97307 communique and patent documentation 3---), or separate insulating properties gas and insulating oil (for example, with reference to patent documentation 4---the spy opens flat 11-215630 communique) with the taper insulation partition.
But, the joint construction of existing gas-insulated switchgear device and oil-immersed type transformer,, between needs 2 insulation partition for forming medial compartment, increase owing to this medial compartment makes the axial length between gas-insulated switchgear device and the oil-immersed type transformer, be difficult to realize the miniaturization and with equipment of reducing of floor space.Relative therewith, in the joint construction of gas-insulated switchgear device that has used the taper insulation partition and oil-immersed type transformer, can dwindle axial length, but since insulating oil allow SF about electric field is than 0.5MPa
6Gas is also low, so must make at the diameter that separates employed taper insulation partition of insulating properties gas and insulating oil greatlyyer than the insulation partition of using in insulating properties gas usually, consequently on the miniaturization and of this part restriction has been arranged.
Summary of the invention
The object of the present invention is to provide and a kind ofly control axial length and realized the gas-insulated switchgear device of miniaturization and and the joint construction of oil-immersed type transformer.
To achieve these goals, the joint construction of gas-insulated switchgear device of the present invention and oil-immersed type transformer is at the connecting portion container of the gas-insulated switchgear device side of insulating properties gas being enclosed the closed container formation and insulating oil is enclosed between the connecting portion container of the oil-immersed type transformer side that constitutes in other the closed container, be provided with the insulation partition that separates insulating properties gas and insulating oil, it is characterized in that: above-mentioned insulation partition is to have convex surface in a side, the taper insulation partition that has concave surface at opposite side, this taper insulation partition only is provided with 1 between above-mentioned two connecting portion containers, convex side with above-mentioned taper insulation partition separates insulating properties gas, separates insulating oil with concave side.
The joint construction of gas-insulated switchgear device of the present invention and oil-immersed type transformer can reduce the maximum of electric field in concave side, and can make along the maximum of the electric field of face direction composition very lowly, can make the reduced of the connecting portion container that connects the joint construction between gas-insulated switchgear device and the oil-immersed type transformer thus.In addition, owing between the connecting portion container of the connecting portion container of gas-insulated switchgear device side and oil-immersed type transformer side, only have 1 taper insulation partition, so the axial length of this joint construction is dwindled significantly than the occasion of having used existing oil-gas bushing.
Description of drawings
Fig. 1 represents the significant points cutaway view according to the joint construction of gas-insulated switchgear device of an embodiment of the invention and oil-immersed type transformer.
Fig. 2 is the significant points cutaway view of an occupation mode of expression joint construction shown in Figure 1.
Fig. 3 is the Electric Field Distribution characteristic pattern of electric field analysis result of convex surface one side of expression taper insulation partition shown in Figure 2.
Fig. 4 is the Electric Field Distribution characteristic pattern of electric field analysis result of concave surface one side of expression taper insulation partition shown in Figure 2.
Fig. 5 is other the significant points cutaway view of occupation mode of expression joint construction shown in Figure 1.
Fig. 6 is the Electric Field Distribution characteristic pattern of electric field analysis result of convex surface one side of expression taper insulation partition shown in Figure 5.
Fig. 7 is the Electric Field Distribution characteristic pattern of electric field analysis result of concave surface one side of expression taper insulation partition shown in Figure 5.
Fig. 8 is the significant points cutaway view of the other occupation mode of expression joint construction shown in Figure 1.
Fig. 9 is the Electric Field Distribution characteristic pattern of electric field analysis result of convex surface one side of expression taper insulation partition shown in Figure 8.
Figure 10 is the Electric Field Distribution characteristic pattern of electric field analysis result of concave surface one side of expression taper insulation partition shown in Figure 8.
Figure 11 be expression according to of the present invention other the gas-insulated switchgear device of execution mode and the significant points cutaway view of the joint construction of oil-immersed type transformer.
Figure 12 is expression according to the significant points cutaway view of the joint construction of the gas-insulated switchgear device of other execution mode of the present invention and oil-immersed type transformer.
Figure 13 is expression according to the significant points cutaway view of the joint construction of the gas-insulated switchgear device of other execution mode of the present invention and oil-immersed type transformer.
Figure 14 is expression according to the significant points cutaway view of the joint construction of the gas-insulated switchgear device of other execution mode of the present invention and oil-immersed type transformer.
Figure 15 is expression according to the significant points cutaway view of the joint construction of the gas-insulated switchgear device of other execution mode of the present invention and oil-immersed type transformer.
Figure 16 is expression according to the significant points cutaway view of the joint construction of the gas-insulated switchgear device of other execution mode of the present invention and oil-immersed type transformer.
Figure 17 is the disintegration voltage characteristic pattern of the relation of the insulating oil gap length of expression joint construction shown in Figure 16 and disintegration voltage.
Figure 18 is the vertical view that expression has adopted the electric substation of joint construction shown in Figure 1 to constitute.
Figure 19 is the front view that electric substation shown in Figure 180 constitutes.
Figure 20 is the vertical view that expression has adopted the electric substation of existing joint construction to constitute.
Figure 21 is the front view that electric substation shown in Figure 20 constitutes.
Figure 22 is expression according to the significant points cutaway view of the joint construction of the gas-insulated switchgear device of other execution mode of the present invention and oil-immersed type transformer.
Figure 23 is the characteristic pattern of the foreign matter attachment phenomenon of expression joint construction shown in Figure 22.
Figure 24 is the characteristic pattern of the relation of the length of arm of expression joint construction shown in Figure 22 and diameter.Among the figure:
1,2-connecting portion container; 3-taper insulation partition; 4-imbeds conductor; The 5-middle conductor; 6-pliability conductor; The decay of 7-electric field is with shielding: the 13-closed container; The 14a-flange part; The 16-gas-insulated switchgear device; The 17-oil-immersed type transformer; The 20-recess; The 27-insulation barrier
Embodiment
Below based on description of drawings preferred forms of the present invention.
Figure 18 and Figure 19 are the vertical view and the front views of the joint construction of expression gas-insulated switchgear device of the present invention and oil-immersed type transformer.
In the closed container of having enclosed insulating properties gas, receive the gas-insulated switchgear device 16 of dress main circuit conductor, the formation that possesses unit, line side and transformer side unit etc., the unit, line side is that the end with breaker 22 is connected to dual main bus bar 21a between circuit breaker, on the 21b, and possesses the sleeve pipe 23 that is connected on the power transmission line between circuit breaker at the other end of breaker 22, the transformer side unit is that the end with transformer side breaker 24 is connected dual main bus bar 21a, on the 21b, and distolaterally possess as required the lightning arrester 25 that is provided with at another, the main circuit conductor that each one makes each equipment by insulation partition and other insulation stent etc. in the closed container of having enclosed insulating properties gas with the state lower support of closed container electric insulation.Be to use SF as the insulating properties gas of enclosing in the closed container
6Gas, air, nitrogen, fluorine type gas, N
2/ O
2Mist, comprise the mist of negativity gas etc.On the other hand, oil-immersed type transformer 17 is to enclose the vegetable oil of mineral oil, silicone oil, vegetable seed wet goods, synthetic ester oil, PFC, pure water, liquid nitrogen, liquid helium etc. to constitute in having disposed the closed container of coil etc.Another distolateral binding of above-mentioned transformer side breaker 24 has connecting portion container 1, and the connecting portion container 2 of the connecting portion container 1 of these gas-insulated switchgear device 16 sides and oil-immersed type transformer 17 sides is connected between taper insulation partition in detail as described later 3.Connecting portion container 1 and connecting portion container 2 roughly form same external diameter, separate the insulating properties gas of gas-insulated switchgear device 16 sides and the insulating oil of oil-immersed type transformer 17 sides by the pyramid type insulation partition 3 that disposes between the two.
Fig. 1 is the pith cutaway view of the joint construction of above-mentioned gas-insulated switchgear device and oil-immersed type transformer.
The taper insulation partition 3 that separates insulating properties gas and insulating oil is cone shape or cross sectional shape similar with it, and a side is a convex surface, and opposite side is a concave surface, and convex surface one side is to gas-insulated switchgear device 16 1 sides, and concave surface one side is to oil-immersed type transformer 17 1 sides.Be integrally formed with at the central part of this taper insulation partition 3 and imbed conductor 4, an end of imbedding conductor 4 is connected between the main circuit conductor 8 of contact 9 with gas-insulated switchgear device 16 sides, and its other end is connected with pliability conductor 6 as the main circuit conductor of oil-immersed type transformer 17.
After being installed in taper insulation partition 3 on the connecting portion container 2, the operator enters in the connecting portion container 2, with the pliability conductor 6 of oil-immersed type transformer 17 with imbed that conductor 4 is electrically connected and mechanicalness is connected, thereafter, imbedding outer Monday of which floor insulating paper of side spooling 10 of conductor 4 and pliability conductor 6.After this spooling operation is finished, the inside of connecting portion container 2 sides is inhaled for after the vacuum, insulating oil is enclosed in the closed container and connecting portion container 2 of oil-immersed type transformer 17, thus, can not produce bubble, insulating oil be soaked effectively be contained in the insulating paper 10, realize the raising of insulation endurance.Also can replace insulating paper 10, use dielectric film.
Represented among Fig. 3 and Fig. 4 in above-mentioned joint construction, as shown in Figure 2 will be as the SF of insulating properties gas
6Gas is enclosed in the connecting portion container and will have been enclosed convex surface one side of taper insulation partition 3 of the occasion in the connecting portion container 2 and the Electric Field Distribution of concave surface one side surface as the mineral oil of insulating oil.In two figure, the longitudinal axis is normalized by the maximum of the electric field of convex surface one side surface of taper insulation partition 3.
From the Electric Field Distribution shown in the solid line, the maximum of the Electric Field Distribution feature 14b of concave surface one side shown in Figure 4 is 0.85, than the maximum 1.00 of the Electric Field Distribution feature 14e of convex surface shown in Figure 3 one side approximately low 15%.On the other hand, from the Electric Field Distribution shown in the dotted line along face direction composition, the maximum along face direction composition Electric Field Distribution feature 15f of concave surface one side shown in Figure 4 is 0.81, than the maximum 0.56 high approximately 60% along face direction composition Electric Field Distribution feature 15e of convex surface shown in Figure 3 one side.
Therefore, on the surface of taper insulation partition 3 are occasions of cleaning, insulation endurance exists with ... electric field maximum, concave surface one side hangs down 15% approximately than convex surface one side, on the other hand, in the surface attachment of taper insulation partition 3 occasion of fine foreign matters, insulation endurance exists with ... along the electric field value of face direction composition, concave surface one side is higher approximately by 60% than convex surface one side, and its value is 0.81.But in the gas-insulated switchgear device and oil-immersed type transformer of reality, the foreign matter of removing fully in insulating properties gas and the insulating oil is very difficult, and the insulation endurance when adhering to by fine foreign matters in the reality decides the size and the insulating reliability of equipment.Therefore, as long as can reduce the electric field of taper insulation partition 3, just can realize the miniaturization of equipment along face direction composition.Here, for maximum, be 0.56 relative with convex surface one side along the electric field of face direction composition, concave surface one side is 0.81, and will enclose occasion that insulation medium in connecting portion container 1 and the connecting portion container 2 have carried out various changes relatively, describes.
At first, in above-mentioned joint construction, in Fig. 6 and Fig. 7, represented in connecting portion container 1 shown in Fig. 5 and connecting portion container 2, to have enclosed SF respectively as insulating properties gas
6Convex surface one side of the taper insulation partition 3 of the occasion of gas and the Electric Field Distribution of concave surface one side surface, in two figure, the longitudinal axis is by normalized with the maximum of the electric field of convex surface one side surface of the same taper insulation partition 3 in front.
Electric Field Distribution from the surface of taper insulation partition 3, same with the occasion of front, the maximum of the Electric Field Distribution feature 14f of concave surface one side shown in Figure 7 is 0.90, than the maximum 1.00 of the Electric Field Distribution feature 14e of convex surface shown in Figure 6 one side approximately low 10%.Different therewith, along the Electric Field Distribution of face direction composition shown in dotted line along face direction composition Electric Field Distribution feature 15f, near the depression of concave surface shown in Figure 7 one side curvature in minimum is maximum 0.83, than the maximum 0.59 high approximately 40% along face direction composition Electric Field Distribution feature 15e of convex surface shown in Figure 6 one side.But, with itself and Fig. 2～shown in Figure 4 along the maximum of face direction composition Electric Field Distribution feature 15e, 15f relatively, be 0.81 relative with concave surface one side shown in Figure 4, concave surface one side shown in Figure 7 is 0.83, produce about 5% poor.That is: can learn, in connecting portion container 1, enclose SF as shown in Figure 2 as insulating properties gas
6Gas has also been enclosed mineral oil as insulating oil in connecting portion container 2, the maximum step-down along the electric field of face direction composition of pyramid type insulation partition 3.
In addition, in Fig. 9 and Figure 10, represented in connecting portion container 1, to enclose as shown in Figure 8 as the mineral oil of insulating oil and in connecting portion container 2, enclosed SF as insulating properties gas
6Convex surface one side of the taper insulation partition 3 of the occasion of gas and the Electric Field Distribution of concave surface one side surface.
The Electric Field Distribution on the surface of taper insulation partition 3 and the occasion of front are same, shown in solid line, the maximum of the Electric Field Distribution feature 14d of concave surface one side shown in Figure 10 is 1.12, and 0.97 high approximately by 5% than convex surface shown in Figure 9 one side moved to imbedding near the of conductor 4.Relative therewith, along the Electric Field Distribution of face direction composition as dotted line among Figure 10 along shown in the face direction composition Electric Field Distribution feature 15d, near the maximum of concave surface one side is the depression of curvature in minimum is 1.00, than the maximum 0.81 high approximately 20% along face direction composition Electric Field Distribution feature 15c of convex surface shown in Figure 9 one side.With itself and Fig. 2～shown in Figure 4 along the maximum of the electric field of face direction composition relatively, and be 0.81 relative in concave surface shown in Figure 4 one side, be 1.00 in concave surface shown in Figure 10 one side, high approximately 20%.That is: can learn, in connecting portion container 1, enclose SF as shown in Figure 2 as insulating properties gas
6Gas has also been enclosed mineral oil as insulating oil in connecting portion container 2, taper insulation partition 3 is along the maximum step-down of the electric field of face direction composition.
Like this, in the joint construction of gas-insulated switchgear device 16 and oil-immersed type transformer 17, as shown in Figure 2, the occasion of using taper insulation partition 3 in connecting portion container 1, to enclose insulating properties gas and in connecting portion container 2, enclosed insulating oil, with convex surface one side is roughly relative with the electric field maximum of degree, the maximum of concave surface one side electric field reduces, and can make and fall quite lowly, can reduce to connect the diameter of the connecting portion container 1,2 of the joint construction between gas-insulated switchgear device 16 and the oil-immersed type transformer 17 thus along the maximum of the electric field of face direction composition.In contrast, as shown in Figure 8, the occasion of in connecting portion container 1, enclosing insulating oil and in connecting portion container 2, having enclosed insulating properties gas, in order to ensure insulating reliability equal when in two connecting portion containers 1,2, having enclosed insulating properties gas, result according to the electric field of concave surface one side is resolved must make the external diameter of taper insulation partition 3 increase about 20% at least.
In addition, as Figure 20 and shown in Figure 21, on the joint construction of gas-insulated switchgear device 16 and oil-immersed type transformer 17, used the occasion of oil-gas bushing 26, between gas-insulated switchgear device 16 and oil-immersed type transformer 17,, become the formation that the bigger electric substation of area is set owing to oil-gas bushing 26 needs very big distance.Relative therewith, as shown in Figure 1, if between connecting portion container 1,2, taper insulation partition 3 is installed to oil-immersed type transformer 17 1 sides in its concave surface one side, then as Figure 18 and shown in Figure 19, approaching configuration between gas-insulated switchgear device 16 and the oil-immersed type transformer 17 can be made, the area that is provided with of electric substation's formation can be dwindled significantly.And then following explanation is described, can shorten the axial length of the connecting portion container 1,2 that connects the joint construction between gas-insulated switchgear device 16 and the oil-immersed type transformer 17, realizes further miniaturization as a whole.
Figure 22 be expression above-mentioned gas-insulated switchgear device 16 with the joint construction of oil-immersed type transformer 17 in the significant points cutaway view of installation site of taper insulation partition 3.
In the closed container 13 of the transformer body that has disposed coil 12 grades, go out the connecting portion container 2 that approximate horizontal ground extends in its side branch, form flange 14a to size L with interior place at branching portion from this connecting portion container 2.Also form same flange 14b on the connecting portion container 1 of gas-insulated switchgear device side, taper insulation partition 3 releasably connects by having omitted illustrated bolt between flange 14a, 14b.Can learn, if make the joint construction miniaturization of gas-insulated switchgear device 16 and oil-immersed type transformer 17, not only to will separate between gas-insulated switchgear device 16 and the oil-immersed type transformer 17 with 1 taper insulation partition 3, and especially shorten when a lot of when the axial length with the connecting portion container 2 of oil-immersed type transformer 17, then can produce following problem.
That is: as shown in the drawing, insulating oil can the formation temperature gradient produces the convection current of arrow as shown owing to the heating of coil 12.Because taper insulation partition 3 is positioned near the utmost point of closed container 13 of oil-immersed type transformer 17, so newly produced small foreign matter in the insulating oil along with this convection current is dispersed to the possibility on the surface of imbedding conductor 4 taper insulation partition 3 nearby.This is to sneak into the new problem that produces outside the foreign matter in can not being avoided closed container 13.At this, if taper insulation partition 3 is that concave surface one side is disposed to transformer one side, as described in then illustrating as Fig. 8～Figure 10, have in concave surface one side along the electric field of face direction composition attached to the danger of high part, reduce insulation property significantly, the result can not shorten the axial length of the joint construction of gas-insulated switchgear device 16 and oil-immersed type transformer 17.But, because taper insulation partition 3, be that its concave surface one side is installed to oil-immersed type transformer 17 1 sides as shown in Figure 2, so the electric field along face direction composition is suppressed, and becoming foreign matter is difficult for attached to it along the shape on the face, so can suppress the low of insulation property, can shorten the axial length of the joint construction of gas-insulated switchgear device 16 and oil-immersed type transformer 17.
As mentioned above, since because of the convection current of the insulating oil of the heating formation temperature gradient of coil 12 make the problem along adhering to foreign matter on the face of taper insulation partition 3 be as the present invention shortening the problem of gas-insulated switchgear device 16 significantly with the new generation of occasion of the axial length of the joint construction of oil-immersed type transformer 17.On the closed container 13 of oil-immersed type transformer 17, be provided as the connecting portion container 2 of the branching portion that extends in the horizontal direction, be typically designed to the roughly equal diameter of connecting portion container 1 with gas-insulated switchgear device 17 1 sides.At this, connecting portion container 2 when the radius that is made into axial length at this connecting portion container 2 and is L, connecting portion container 2 is r, satisfies the relation of 0.2＜L/2r＜2.0 as shown in figure 22.As shown in figure 24, on the joint construction of gas-insulated switchgear device 16 and oil-immersed type transformer 17, separating 1 insulation partition 3 of insulating properties gas and insulating oil in use, when oil-immersed type transformer 17 1 sides dispose, is according to allowing that the size of foreign matter decides 0.2＜L/2r with its concave surface one side.In addition, be on the basis that makes axial length than the existing oil that uses-assembling that gas bushing shortens, consider the cooling effect that the convection current of the insulating oils enclosed in the closed container 13 of oil-immersed type transformer 17 brings, particularly consider to be positioned at pliability conductor 6 gas-insulated switchgear device 16 sides the free end side connecting portion cooling effect, carry restriction, stress that the weld part of the closed container 13 of connecting portion container 2 is applied etc. decides L/2r＜2.0.
Therefore, in the axial length of the connecting portion container 2 of oil-immersed type transformer 17 1 sides is that the radius of L, connecting portion container 2 is when being r, be 0.2＜L/2r＜2.0, as shown in Figure 1, by taper insulation partition 3 is installed to oil-immersed type transformer 17 1 sides in its concave surface one side, radially reaching axially of this joint construction dwindled.This axial length L, as above-mentioned, be the axial length of the connecting portion container 2 of oil-immersed type transformer 17 1 sides of the occasion of having used an existing oily gas bushing or following, become Figure 18 and joint construction shown in Figure 19, compare with Figure 20 and existing this joint construction shown in Figure 21, approaching configuration between gas-insulated switchgear device 16 and the oil-immersed type transformer 17 can be made, the area that is provided with of electric substation's formation can be dwindled significantly.
In addition, if the size of the foreign matter near pyramid type insulation partition 3 that disperses is 0.2＜L/2r＜2.0 as shown in figure 23, the size of the foreign matter that then can limiting disperses comes.Therefore, best axial length L as the connecting portion container 2 of oil-immersed type transformer 17, if in the scope of 0.2＜L/2r＜2.0, use, then can restriction disperse the joint construction that in the size of the foreign matter nearby of taper insulation partition 3, makes gas-insulated switchgear device 16 and oil-immersed type transformer 17 radially reaching axially on miniaturization.
Like this, according to the gas-insulated switchgear device 16 of present embodiment and the joint construction of oil-immersed type transformer 17, as described in illustrating as Figure 22, by before producing the problems referred to above, shortening this axial length significantly, for the new problem that produces because of convection current in the oil-immersed type transformer side, can be resolved by making its concave surface one side taper insulation partition 3 is installed as shown in Figure 1, simultaneously radially reaching axially of this joint construction dwindled to oil-immersed type transformer 17 sides.
In addition, owing to suppress to be formed on the length of the connecting portion container 2 on the closed container of transformer and separate insulating properties gas and insulating oil with 1 insulation partition 3, so can enough insulation partition 3 imbed the free end side that conductor 4 supports the pliability conductor 6 of oil-immersed type transformer 17 sides, can make the formation of this one succinct.In order to support the free end side of pliability conductor 6, might as well append other insulation supporting member, but in the occasion of having used an existing oily gas bushing, in the joint construction of shaft length than long gas-insulated switchgear device 16 and oil-immersed type transformer 17, can not be by the free end side that conductor 4 supports pliability conductor 6 of imbedding of the insulation partition 3 that separates insulating properties gas and insulating oil., the axial length by shortening connecting portion container 2 and use 1 insulation partition 3 that separates insulating properties gas and insulating oil, this just becomes possibility, can make the formation simplification of this joint construction.
Figure 11 is expression according to other the significant points cutaway view of gas-insulated switchgear device 16 and the joint construction of oil-immersed type transformer 17 of execution mode of the present invention, to being marked with prosign with the equal object of thing shown in Figure 1.
In the connecting portion container 1 of the convex side that has disposed taper insulation partition 3, enclose insulating properties gas, and in having disposed the connecting portion container 2 of concave side, enclose insulating oil.Will be roughly be electrically connected and machinery be connected oil-immersed type transformer 17 1 sides of imbedding conductor 4, make from transformer and coupling part pliability conductor 6 than the flange 14a of the connecting portion container 2 of concave surface one side that is positioned at taper insulation partition 3 more near transformer one side with the middle conductor 5 in footpath.In being connected after the operation of middle conductor 5 and pliability conductor 6, the electric field decay being installed making this connecting portion of covering, the electric field of this connecting portion of decaying with shielding 7.The decay of this electric field is with shielding 7 outer surface by realized the raising of proof voltage by insulant 18 casting molds of epoxylite or fluorine-type resin etc.In addition, in occasion as above-mentioned execution mode, as the insulant 18 of being located at the outer surface of imbedding conductor 4, middle conductor 5 and pliability conductor 6, can use insulating paper or the dielectric film of spooling at their peripheral part, perhaps also can make it Towards Higher Voltage by all metal surfaces that cover in the insulating oil with same insulant 18, and then, if then can improve insulating reliability for a long time with reaching the electric field decay between the shielding 7 with between shielding 7 and the pliability conductor 6 with bonding conductor 5 and electric field decay in the middle of force fit plate or the insulating paper obstruction.
Figure 12 be expression according to the gas-insulated switchgear device 16 of other execution mode of the present invention and the significant points cutaway view of the joint construction of oil-immersed type transformer 17, be marked with prosign for the object that is equal to thing shown in Figure 1.Connecting portion container 1 at the convex side that is positioned at taper insulation partition 3 is enclosed insulating properties gas, and encloses insulating oil at the connecting portion container 2 that is positioned at concave side.In the oil-immersed type transformer of imbedding conductor 4 17 sides of the central part that is embedded in taper insulation partition 3, connect middle bonding conductor 5 with contact 19, decay with shielding 7 with the periphery installation electric field that is connected of pliability conductor 6 at middle bonding conductor 5.
Like this, if on the connecting portion of oil-immersed type transformer 17 sides, use contact 19, then middle bonding conductor 5 and pliability conductor 6 be connected and the installation exercise of electric field decay with shielding 7 after, can in the distortion that utilizes pliability conductor 6, in connecting portion container 2, insert this connecting portion, can improve operability.In addition, if on the connecting portion of oil-immersed type transformer 17 sides, use contact 19, then can on the closed container 13 of oil-immersed type transformer shown in Figure 22 17, form no illustrated hand hole, connecting portion container 2 is installed taper insulation partition 3 when utilizing this hand hole to support middle conductor 5, can carry out middle conductor 5 and the operation of imbedding between the conductor 4 that is connected simply, can omit the operator and enter the operation of carrying out in the closed container 13.Thus, the length of the length direction of connecting portion container 2 can be further shortened, the erection space downsizing of joint construction can be made.And then middle conductor 5 only is the operation that middle conductor 5 is inserted in the contact 19 with imbedding being connected of conductor 4, is related to the reduction of artificial error.Also can be same with the occasion of Figure 13, at the insulant 18 of contact 19 and electric field decay with the outer surface of shielding 7 covered filling epoxy resin of charges and fluorine-type resin etc.
Figure 13 be expression according to the gas-insulated switchgear device 16 of other execution mode of the present invention and the significant points cutaway view of the joint construction of oil-immersed type transformer 17, the object that is equal to thing shown in Figure 1 is marked with prosign.Connecting portion container 1 in convex surface one side that is positioned at taper insulation partition 3 is enclosed insulating properties gas, and encloses insulating oil at the connecting portion container 2 that is positioned at concave side.In the oil-immersed type transformer of imbedding conductor 4 17 sides of the central part that is embedded in taper insulation partition 3, form the recess 20 do not run through connecting portion container 1 side, in above-mentioned middle conductor 5 or imbed the connection usefulness contact 11 of configuration multiple-contact in the recess 20 of conductor 4 etc.In recess 20, can insert the part of middle conductor 5, imbed being electrically connected between conductor 4 and the middle conductor 5 by connecting to finish under this insertion state with contact 11.
Like this, the oil-immersed type transformer of imbedding conductor 4 17 sides in being embedded in taper insulation partition 3, form the recess 20 in the connecting portion container 1 that does not run through gas-insulated switchgear device 16 sides, after in this recess 20, imbedding being electrically connected between conductor 4 and the middle conductor 5, can make the axial length of connecting portion container 2 shorten to the degree of the axial length that is equivalent to recess 20, can make the further downsizing of joint construction.At this moment, make metal covering or zinc-plated, then can realize the long-time stability of contact resistance if will connect with the surface of contact 11.Because the occasion of this formation also can be carried out the connection operation of carrying out from the hand hole that forms near at hand illustrated in fig. 12, so there is not the operator to enter the operation of carrying out in the connecting portion container 2.In addition, same with the occasion of the execution mode of front, can cover the outer surface of electric fields decay by insulant 18 with epoxy resin or fluorine-type resin etc. with shielding 7, make proof voltage improve and dwindle the axial length and the internal diameter of connecting portion container 2.
Figure 14 be expression according to the gas-insulated switchgear device 16 of other execution mode of the present invention and the significant points cutaway view of the joint construction of oil-immersed type transformer 17, the object that is equal to thing shown in Figure 1 is marked with prosign.Same with the execution mode of front, enclose insulating properties gas at the connecting portion container 1 of the convex side that is positioned at taper insulation partition 3, and enclose insulating oil at the connecting portion container 2 that is positioned at concave side.The conductor 4 of imbedding that is embedded in the central part of taper insulation partition 3 is characterised in that, the diameter of the part of exposing from the surface of taper insulation partition 3 in these gas-insulated switchgear device 16 sides of imbedding conductor 4 is different with the diameter of the part of exposing from the surface of taper insulation partition 3 in these oil-immersed type transformer 17 sides, and the diameter of oil-immersed type transformer 17 sides diminishes.
Like this, as imbedding conductor 4, by changing external diameter and dwindle the external diameter of oil-immersed type transformer 17 sides in gas-insulated switchgear device 16 sides and oil-immersed type transformer 17 sides, can make the taper insulation partition 3 that has been insulated by the insulating oils in the connecting portion container 2 of oil-immersed type transformer 17 sides along face insulation distance lengthening, the raising of the endurance that can realize insulating.Because the cooling performance of insulating oil is generally than insulating properties gas height, thus thinner even if be positioned at the external diameter of imbedding conductor 4 of insulating oil side than insulating properties gas one side, the also problem that can not generate heat.In addition, owing to dwindled the external diameter of imbedding conductor 4 that is positioned at oil-immersed type transformer 17 sides,, can make the reduced of connecting portion container 2 so the electric field decay of the peripheral part that is configured in connecting portion is also diminished with the diameter that shields 7.Normally by with the decay of this electric field with shielding the diameter that 7 insulation distance etc. decides connecting portion container 2, be mated the diameter of the connecting portion container 1 of decision gas-insulated switchgear device 16 sides, but, can make the joint construction miniaturization of gas-insulated switchgear device and oil-immersed type transformer by dwindling the diameter of electric field decay with shielding 7 and connecting portion container 2.As above illustrate describedly, particularly can cooperate the axial length L that limits connecting portion container 2, make further miniaturization and dwindled the joint construction of gas-insulated switchgear device 16 that area is set and oil-immersed type transformer 17.
Figure 15 be expression according to the gas-insulated switchgear device 16 of other execution mode of the present invention and the significant points cutaway view of the joint construction of oil-immersed type transformer 17, be marked with prosign for the object that is equal to thing shown in Figure 1.Taper insulation partition 3 is Threephase common-boxes, and the phase insulation distance stipulated at interval of heart portion side possesses three-phase and imbeds conductor 4a, 4b therein.Each is roughly same formation mutually, for example is to adopt the formation of Figure 13 explanation to make Threephase common-box, but also can adopts the formation of other execution mode explanation to make Threephase common-box.On each of each phase, same with single-phase usefulness, taper insulation partition 3 is a convex surface in a side, at opposite side is concave surface, in the connecting portion container 1 of this convex surface one side position, enclose insulating properties gas, and in the connecting portion container 2 of concave surface one side position, enclose insulating oil, can access the roughly same effect of occasion with the execution mode of front.In addition, imbed conductor 4a, the 4b of the three-phase of taper insulation partition 3 part are configured in leg-of-mutton each summit, or with the three-phase part and place formation on the horizontal plane.
Figure 16 be expression according to the gas-insulated switchgear device 16 of other execution mode of the present invention and the significant points cutaway view of the joint construction of oil-immersed type transformer 17, be marked with prosign for the object that is equal to thing shown in Figure 1.Taper insulation partition 3 is formations same with object shown in Figure 1, encloses insulating properties gas at the connecting portion container 1 of convex surface one side that is positioned at taper insulation partition 3, and encloses insulating oil at the connecting portion container 2 that is positioned at concave surface one side.In addition, be provided with and imbed roughly at least one insulation barrier 27 of tubular roughly of configuration with one heart of conductor 4 in oil-immersed type transformer 17 sides as concave surface one side of taper insulation partition 3.At this, the gap length that the insulating oil between pliability conductor 6 and the insulation barrier 27 is formed is as d1, with the gap length of the formation of the insulating oil between insulation barrier 27 and the connecting portion container 2 as d2.
In the short occasion of gap length d, the disintegration voltage of gap length d in the insulating oil is big, the change that is directly proportional with gap length d is big, but gap length d to certain value or above after, disintegration voltage V characteristic curve 28 as shown in figure 17, the expression tendency, even if strengthen gap length d, the rising of disintegration voltage V is also small.But, if cut apart insulating oil in the connecting portion container 2 by gap length d1 by insulation barrier 27, the then relation such as the characteristic curve 29 of disintegration voltage V and total oil-gap, disintegration voltage V is higher than the characteristic curve 28 of the occasion that insulation barrier 27 is not set.Therefore, by gap length d1 with the gap sectionalization of insulating oil total oil-gap length of occasion and the relation of disintegration voltage V shown in the characteristic curve 28 of single-point dotted line, sectionalization disintegration voltage V is high more more with insulating oil with a plurality of insulation barriers 27.In addition, as shown in figure 16, in the occasion of connecting portion container 2 cylindraceous roughly, owing to the current potential gradient along with closely becoming greatly, so d1＜d2 preferably to pliability conductor 6 side joints as main circuit conductor.
Like this, if dispose the insulation barrier 27 of a tubular at least in oil-immersed type transformer 17 sides as the concave side of taper insulation partition 3, the dielectric voltage withstand of the concave side of then taper insulation partition 3 uprises, and makes taper insulation partition 3 more small-sized or insulation allowance is strengthened than the occasion that does not have insulation barrier.
According to the joint construction of gas-insulated switchgear device according to the present invention 16 and oil-immersed type transformer 17 be not limited to the concave side of taper insulation partition 3 shown in Figure 1 and convex side along the face shape, can be applicable to the joint construction that uses the gas-insulated switchgear device 16 that adopted various taper insulation partition 3 along the face shape and oil-immersed type transformer 17.
Claims (6)
1. the joint construction of gas-insulated switchgear device and oil-immersed type transformer, between the connecting portion container of the oil-immersed type transformer side that the inclosure insulating oil constitutes in the connecting portion container of the gas-insulated switchgear device side that inclosure insulating properties gas constitutes in closed container and other the closed container, be provided with the insulation partition that separates insulating properties gas and insulating oil, it is characterized in that: above-mentioned insulation partition is to have convex surface in a side, the taper insulation partition that has concave surface at opposite side, this taper insulation partition only is provided with 1 between above-mentioned two connecting portion containers, convex side with above-mentioned taper insulation partition separates insulating properties gas, separates insulating oil with concave side.
2. the joint construction of gas-insulated switchgear device according to claim 1 and oil-immersed type transformer, it is characterized in that: above-mentioned taper insulation partition heart portion therein possesses the conductor of imbedding that is electrically connected between the main circuit conductor with the main circuit conductor of above-mentioned gas insulated switch side and above-mentioned oil-immersed type transformer side, and this imbeds conductor, and to be exposed to the diameter of part of above-mentioned concave side littler than the diameter of the part that is exposed to above-mentioned convex side.
3. the joint construction of gas-insulated switchgear device according to claim 1 and oil-immersed type transformer, it is characterized in that: above-mentioned taper insulation partition heart portion therein possesses the conductor of imbedding that is electrically connected between the main circuit conductor with the main circuit conductor of above-mentioned gas insulated switch side and above-mentioned oil-immersed type transformer side, form the recess that does not connect above-mentioned convex side in this above-mentioned concave side of imbedding conductor, in this recess, insert and disposed an axial at least part that connects the middle conductor between the above-mentioned main circuit conductor of imbedding conductor and above-mentioned oil-immersed type transformer side.
4. the joint construction of gas-insulated switchgear device according to claim 1 and oil-immersed type transformer is characterized in that: disposed in above-mentioned recess above-mentioned imbedding used joint being connected of being electrically connected between conductor and the above-mentioned middle conductor.
5. the joint construction of gas-insulated switchgear device according to claim 1 and oil-immersed type transformer is characterized in that: if the axial length of above-mentioned oil-immersed type transformer side connecting portion container is made as L and radius is made as r, then be 0.2＜L/2r＜2.0.
6. the joint construction of gas-insulated switchgear device according to claim 1 and oil-immersed type transformer, it is characterized in that: above-mentioned oil-immersed type transformer possesses the pliability conductor that is connected with the main circuit conductor of above-mentioned gas insulated switch side and constitutes, above-mentioned taper insulation partition heart portion therein possesses the conductor of imbedding that is electrically connected between the pliability conductor with the main circuit conductor of above-mentioned gas insulated switch side and above-mentioned oil-immersed type transformer side, the end of the above-mentioned gas insulated switch side of above-mentioned pliability conductor is connected electrically in above-mentionedly imbeds on the conductor and the support of mechanical twelve Earthly Branches.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005321109 | 2005-11-04 | ||
| JP2005-321109 | 2005-11-04 | ||
| JP2005321109A JP4764139B2 (en) | 2005-11-04 | 2005-11-04 | Connection structure of gas insulated switchgear and oil-filled transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1967955A true CN1967955A (en) | 2007-05-23 |
| CN1967955B CN1967955B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101437054A Active CN1967955B (en) | 2005-11-04 | 2006-11-02 | Gas insulation switch device and oil immersed transformer connection structure |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4764139B2 (en) |
| KR (1) | KR101254664B1 (en) |
| CN (1) | CN1967955B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337311A (en) * | 2013-05-29 | 2013-10-02 | 国家电网公司 | Oil and gas isolation insulator |
| CN107077955A (en) * | 2014-07-10 | 2017-08-18 | Abb瑞士股份有限公司 | Electric equipment comprising gas insulated apparatus, particularly gas-insulated transformer or reactor |
| CN112563071A (en) * | 2020-05-22 | 2021-03-26 | 中车青岛四方机车车辆股份有限公司 | Vacuum circuit breaker |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202221877U (en) * | 2011-01-28 | 2012-05-16 | Abb技术有限公司 | Device for coupling components in gas-insulated switchgear |
| CN102811577B (en) * | 2012-08-01 | 2015-04-22 | 中国西电电气股份有限公司 | Turnup inserting integrated structure of high-voltage electric shell |
| JP6415848B2 (en) * | 2014-05-14 | 2018-10-31 | 株式会社東芝 | Transformer for converter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019133Y1 (en) * | 1970-07-22 | 1975-06-11 | ||
| JPH099431A (en) | 1995-06-22 | 1997-01-10 | Mitsubishi Electric Corp | Gas insulated switchgear |
| JPH11215628A (en) * | 1998-01-29 | 1999-08-06 | Toshiba Corp | Gas-insulated switchgear |
| JP3835036B2 (en) * | 1999-01-29 | 2006-10-18 | 株式会社日立製作所 | Gas insulated switchgear |
| JP3774604B2 (en) * | 1999-12-27 | 2006-05-17 | 三菱電機株式会社 | Gas insulated switchgear |
-
2005
- 2005-11-04 JP JP2005321109A patent/JP4764139B2/en active Active
-
2006
- 2006-11-02 CN CN2006101437054A patent/CN1967955B/en active Active
- 2006-11-03 KR KR1020060108075A patent/KR101254664B1/en active IP Right Grant
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337311A (en) * | 2013-05-29 | 2013-10-02 | 国家电网公司 | Oil and gas isolation insulator |
| CN103337311B (en) * | 2013-05-29 | 2015-12-23 | 国家电网公司 | Oil gas isolated insulation |
| CN107077955A (en) * | 2014-07-10 | 2017-08-18 | Abb瑞士股份有限公司 | Electric equipment comprising gas insulated apparatus, particularly gas-insulated transformer or reactor |
| US10714256B2 (en) | 2014-07-10 | 2020-07-14 | Abb Power Grids Switzerland Ag | Electrical device comprising a gas-insulated apparatus, in particular a gas-insulated transformer or reactor |
| CN112563071A (en) * | 2020-05-22 | 2021-03-26 | 中车青岛四方机车车辆股份有限公司 | Vacuum circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101254664B1 (en) | 2013-04-23 |
| CN1967955B (en) | 2010-10-13 |
| JP4764139B2 (en) | 2011-08-31 |
| KR20070048618A (en) | 2007-05-09 |
| JP2007129851A (en) | 2007-05-24 |
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