WO2012131180A1 - Élément diélectrique pour isolateur haute tension à haute résistance mécanique en traction - Google Patents
Élément diélectrique pour isolateur haute tension à haute résistance mécanique en traction Download PDFInfo
- Publication number
- WO2012131180A1 WO2012131180A1 PCT/FR2011/052080 FR2011052080W WO2012131180A1 WO 2012131180 A1 WO2012131180 A1 WO 2012131180A1 FR 2011052080 W FR2011052080 W FR 2011052080W WO 2012131180 A1 WO2012131180 A1 WO 2012131180A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rib
- dielectric element
- skirt
- head
- tensile strength
- Prior art date
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 45
- 239000005341 toughened glass Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 239000000615 nonconductor Substances 0.000 claims description 6
- 238000010616 electrical installation Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- -1 calcium sulpho aluminate Chemical class 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
- H01B3/084—Glass or glass wool in binder
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/05—Suspension arrangements or devices for electric cables or lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
Definitions
- the invention relates to the field of high voltage electrical insulators intended to maintain in the air overhead power transmission lines. It relates more particularly to high voltage insulators type "bonnet and rod” which can be nested in series in each other to form an insulation insulators chain adapted to maintain the air in horizontal or vertical tension (suspension) high voltage electrical cables.
- the invention more particularly relates to the element or dielectric piece equipping this type of insulator.
- This element is generally a tempered glass body comprising a hollow head extended by a flared portion forming a skirt.
- a metal cap recessed at its top is sealed on the outer surface of the head and a metal rod, whose end is adapted to fit on the top of the hood of an adjacent insulator in an insulating chain, is sealed in the internal cavity of the head.
- the dielectric element is geometrically characterized by the external diameter of the skirt and by the pitch (inter-isolator spacing) which corresponds to the vertical distance between two identical points of two consecutive dielectric elements of a chain of insulators.
- the electrical insulation power of the dielectric element is characterized by measuring its creepage distance which is defined by the external profile of the dielectric element, that is to say equal to the shortest path traveled on the surface of the dielectric element between the cover and the metal rod.
- an insulator is mechanically characterized by its tensile strength.
- Both the actual dielectric element and the insulator up to the isolator insulator chain as a whole must meet electrical, mechanical and chemical requirements as well as dimensional requirements in order to comply with the requirements. standards in force, in particular the international standard IEC60815. It is therefore both appropriate profiling the dielectric of each insulator and use a sufficient number in the chain, but taking into account the spatial constraints. Indeed, once in place, the insulating chain is usually suspended vertically to a pylon to which it is attached, being found almost parallel to it, or anchored to the pylon in a semi-horizontal manner.
- Patent document FR 2 680 041 discloses an electrical insulator with a glass dielectric which can be used in insulating chains for high-voltage cables greater than 90 kV which comprises a dielectric element having a skirt of diameter between 320 and 350 mm for a step between 140 and 150 mm and forming a creepage distance of between 550 and 575 mm.
- the invention is directed to an electrical isolator of hood and rod type as defined above but adapted for very high or ultra high voltages.
- the cables In this range of voltages, the cables have diameters greater than standards and therefore a very important weight that must be supported by the chains of insulators.
- each insulator has a tensile strength of the order of 550 kN.
- each insulator has a tensile strength of the order of 300kN thus forming a set with a tensile strength of the order of 1200kN.
- Electrical dielectric insulators hardened glass therefore currently have a tensile strength limited to 550kN.
- the object of the invention is to propose a solution of dielectric insulator made of toughened glass capable of having a very high tensile strength greater than 700 kN and up to 900 kN and which is capable of meeting the requirements of very high or high applications.
- ultra high voltage while having a weight and a minimum step.
- the subject of the invention is a dielectric element for a high-voltage insulator with very high tensile strength, of the type of glass tempered with a revolution about a longitudinal axis, comprising a hollow head extended by a ribbed skirt, characterized in that it is shaped to define a creepage distance of between 550 and 800 mm for an external diameter of the skirt of between 380 and 450 mm and a pitch of between 260 and 290 mm and preferably between 270 and 280 mm, dielectric element further having a weight of between 10 and 13kg.
- the dielectric element according to the invention may have the following particularities:
- said skirt comprises four annular inner ribs which makes it possible to reach the highest creepage distances
- said annular inner ridges comprise two adjacent coplanar ribs in a plane perpendicular to said longitudinal axis.
- said head has a height between its top and the skirt of between 100 and 120 mm, an external diameter of between 105 and 120 mm and an internal cavity of internal diameter of between 55 and 65 mm;
- said head has a height taken between its top and the skirt of between 100 and 120 mm, an external diameter of between 105 and 120 mm and an internal cavity with an internal diameter of between 65 and 75 mm;
- said annular inner ribs comprise a first rib, a second rib shorter than the first rib along the longitudinal axis, a third rib coplanar with the second rib in a plane perpendicular to said longitudinal axis, and a fourth rib shorter than said second and third ribs along the longitudinal axis;
- said first rib has a height measured from the top of said head between 195 and 205 mm
- said second rib and third rib have a respective height measured from the top of the head between 175 and 180 mm
- said fourth rib has a height measured from the top of the head between 165 and 170 mm;
- said first rib has a diameter of between 310 and 340 mm
- said second rib has a diameter of between 250 and 270 mm
- said third rib has a diameter of between 190 and 220 mm
- said fourth rib has a diameter of between 140 and 160 mm;
- said skirt has a wall thickness of between 11 and 18 mm;
- said head comprises between seven and twelve grooves on the outside and seven to fourteen splines on the outside.
- the invention extends to a high voltage electrical insulator with a high mechanical tensile strength of the hood and rod type, characterized in that it comprises such a dielectric element on which are sealed a cover and a metal rod, the high voltage insulator with tensile strength greater than 700 kN.
- the invention also extends to a chain of high voltage electrical insulators with very high tensile strength, characterized in that it comprises a plurality of high voltage insulators as above nested in series in each other.
- the invention also extends to an electrical installation comprising an electric power transmission cable held in the air by a chain of high voltage electrical insulators with very high mechanical strength in traction as above.
- Figure 1 is a schematic view of a high-voltage insulator with very high tensile strength comprising a dielectric element according to the invention
- FIG. 2 is a sectional view of the dielectric element of FIG. 1;
- FIG. 3 is a very schematic view of an electrical installation according to the invention comprising a chain of high voltage insulators with a very high tensile strength according to the invention.
- the high-voltage insulator 1 comprises a dielectric element 2 on which are sealed with a cement or a mortar (of the "Portland” type or aluminous cement or calcium sulpho aluminate for example) a metal cap 3 hollowed at its top and a metal rod 4.
- the recess at the top of the metal cap 3 has a shape complementary to the free end of the metal rod 4 to allow their mutual insertion into one another in order to form a chain of insulators. mounted in series.
- this high-voltage insulator 1 is designed to have a very high tensile strength greater than 700 kN, its metal cap 3 having a weight of approximately 1 kg and the metal rod 4 being able to have a weight of about 2.5 kg, the fixing cement weight being of the order of 0.85 kg.
- the dielectric element 2 of this high-voltage insulator 1, detailed in FIG. 2, is a tempered glass body of revolution about the axis.
- longitudinal A comprising a hollow head 6 of axis A which is cylindrical and a ribbed skirt 7 extending the head 6 coaxially flaring.
- the head 6 has, for example, an outside diameter of between about 105 and 120 mm, in this case 17 mm, and an inside diameter (diameter of the internal cylindrical cavity) of between about 55 and 65 mm.
- the head 6 has an internal diameter between about 65 and 75 mm, here 67.5 mm to +/- 1 mm, to achieve optimum mechanical characteristics. With this particular range of values, the compromise between a sufficiently large creepage distance, a small space requirement and a good mechanical resistance is optimal.
- the thinnest wall thickness at the top of the head 6 is about 20 mm, here 19 mm.
- a sufficient number of grooves are provided both on the outer surface of the head 6 sealed to the metal cap 3 and on the inner surface of the cavity of the head 6 sealed to the metal rod 4.
- the example of Figure 2 there are seven to twelve grooves on the outside of the head and seven to fourteen on the inside of the head 6.
- the height h of the head 6, measured between its top and the the top of the skirt 7, is between about 100 and 120 mm, and preferably between about 105 and 1 15 mm, here 1 1 1 mm.
- the height H of the dielectric element 2, measured between the top of the head 6 and the lowest point of the skirt 7 is between about 190 mm and 210 mm, here 201 mm.
- the skirt 7 has an outer diameter DJ in the plane PJ of at least 350 mm, and preferably between 380 and 450 mm, here 400 mm.
- the skirt 7 of the dielectric element 2 comprises ribs N1, N2, N3, N4, inner annular coaxial with each other and with respect to the peripheral edge 7A of the skirt 7.
- the skirt 7 comprises four annular inner ribs N1, N2, N3, N4 whose two adjacent ribs are coplanar in a plane perpendicular to the axis A.
- the ribs N1-N4 have a slightly conical section in section.
- the diameter DN1 of the first rib N1 in the plane PN1 is between 310 and 340 mm, here 323 mm.
- the diameter DN2 of the second rib N2 in the plane PN2 is between 250 and 270 mm, here 263mm.
- the diameter DN3 of the third rib N3 in the plane PN3 is between 190 and 220 mm, here 203 mm.
- the diameter DN4 of the fourth rib N4 in the plane PN4 is between 140 and 160 mm, here 148.5 mm.
- the wall thickness of the skirt 7 is between 11 and 18 mm. At the peripheral edge 7A to the rib N1, the thickness of the skirt is 1 1 mm. Between the ribs N1 and N2, the thickness of the skirt is
- the thickness of the skirt is 15 mm. Between the rib N4 and the projection 8, the thickness of the skirt is 18 mm.
- the rib N2 is shorter than the rib N1 along the axis A
- the rib N3 is of the same length as the rib N2 and the rib N3 is shorter than the ribs N2 and N3.
- the rib N1 has a height measured from the top of the head 6 between 195 and 205 mm, here 201 mm.
- the ribs N2 and N3 respectively have a height measured from the top of the head 6 of between 175 and 180 mm, here 175.5 mm. Overall these two ribs may have different lengths but however included in this interval if the constraints of maximum creepage length, minimum pitch and maximum tensile strength are not sought simultaneously.
- the rib N4 has a height measured from the top of the head 6 between 165 and 170 mm, here 167 mm.
- the dielectric element 2 of the high voltage insulator 1 has a creepage distance of between 550 and 800 mm, preferably between 650 and 700 mm and here 680 mm.
- the pitch P of the insulator is between 260 and 290 mm and preferably between 270 and 280 mm.
- the weight of the dielectric element 2 of tempered glass in this configuration is between 10 and 13 kg, which makes it possible to mold and soak it with existing tools, which guarantees a maintenance of the physical performances and the quality of manufacture.
- the total weight of the high voltage insulator 1 can be between 24 and 30 kg, preferably between 25 and 28 kg.
- FIG. 3 shows an electrical installation 10 comprising an electric conductor cable 1 1 held on a pylon-type support 13 by a chain 12 of high-voltage insulators 1 nested in series successively one inside the other.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Insulators (AREA)
- Insulating Bodies (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012134776/07U RU127997U1 (ru) | 2011-03-31 | 2011-09-12 | Диэлектрический элемент для высоковольтного изолятора с высоким механическим сопротивлением растяжению |
JP2014600003U JP3192219U (ja) | 2011-03-31 | 2011-09-12 | 高い牽引力強度を有する高電圧絶縁体用の誘電体素子 |
CN2011900003353U CN202871419U (zh) | 2011-03-31 | 2011-09-12 | 用于具有大牵引强度的高压绝缘子的介电元件 |
US13/578,724 US20140196924A1 (en) | 2011-03-31 | 2011-09-12 | Dielectric element for a high-voltage insulator with great traction strength |
CA2784016A CA2784016A1 (fr) | 2011-03-31 | 2011-09-12 | Element dielectrique pour isolant a haute tension d'une grande resistance a la traction |
BR212012020367U BR212012020367Y8 (pt) | 2011-03-31 | 2011-09-12 | elemento dielétrico |
UAU201209669U UA90240U (uk) | 2011-03-31 | 2011-12-09 | Діелектричний елемент для високовольтного ізолятора з великою межею міцності при розтягуванні |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRPCT/FR2011/050724 | 2011-03-31 | ||
FR2011050724 | 2011-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012131180A1 true WO2012131180A1 (fr) | 2012-10-04 |
Family
ID=44883306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2011/052080 WO2012131180A1 (fr) | 2011-03-31 | 2011-09-12 | Élément diélectrique pour isolateur haute tension à haute résistance mécanique en traction |
Country Status (9)
Country | Link |
---|---|
US (1) | US20140196924A1 (fr) |
JP (1) | JP3192219U (fr) |
CN (1) | CN202871419U (fr) |
BR (1) | BR212012020367Y8 (fr) |
CA (1) | CA2784016A1 (fr) |
CL (1) | CL2012002242U1 (fr) |
RU (1) | RU127997U1 (fr) |
UA (1) | UA90240U (fr) |
WO (1) | WO2012131180A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2549171A1 (es) * | 2015-05-21 | 2015-10-23 | Universidad De La Rioja | Aislador compuesto con aletas con cámara espiral |
CN105825973A (zh) * | 2016-04-28 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | 一种方便组装拆卸的针式绝缘子 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3057697B1 (fr) * | 2016-10-18 | 2020-02-14 | Sediver Sa | Isolateur pour lignes electriques aeriennes avec un detecteur de courant de fuite protege |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0388133A2 (fr) * | 1989-03-17 | 1990-09-19 | Ngk Insulators, Ltd. | Isolateur de suspension |
FR2680041A1 (fr) | 1991-07-31 | 1993-02-05 | Saint Gobain Emballage | Piece dielectrique en verre pour isolateur electrique. |
CN201425864Y (zh) * | 2009-04-09 | 2010-03-17 | 南京电气(集团)有限责任公司 | 一种盘形悬式绝缘子 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1291217A (en) * | 1917-02-10 | 1919-01-14 | Sol S Sonneborn | Adjustable suspension-insulator. |
US3192312A (en) * | 1961-06-07 | 1965-06-29 | Westinghouse Electric Corp | Ceramic suspension insulator with an elastomeric boot |
FR1574892A (fr) * | 1968-05-22 | 1969-07-18 | ||
JPS5340896A (en) * | 1976-09-28 | 1978-04-13 | Ngk Insulators Ltd | Suspension insulator |
JPS53135493A (en) * | 1977-04-28 | 1978-11-27 | Ngk Insulators Ltd | Cylindrical insulator |
JPS63211525A (ja) * | 1987-02-25 | 1988-09-02 | 日本碍子株式会社 | 高電圧用磁器碍子 |
JP2002150862A (ja) * | 2000-08-28 | 2002-05-24 | Ngk Insulators Ltd | 懸垂がいし |
-
2011
- 2011-09-12 CN CN2011900003353U patent/CN202871419U/zh not_active Expired - Lifetime
- 2011-09-12 CA CA2784016A patent/CA2784016A1/fr not_active Abandoned
- 2011-09-12 US US13/578,724 patent/US20140196924A1/en not_active Abandoned
- 2011-09-12 WO PCT/FR2011/052080 patent/WO2012131180A1/fr active Application Filing
- 2011-09-12 RU RU2012134776/07U patent/RU127997U1/ru active
- 2011-09-12 BR BR212012020367U patent/BR212012020367Y8/pt not_active IP Right Cessation
- 2011-09-12 JP JP2014600003U patent/JP3192219U/ja not_active Expired - Lifetime
- 2011-12-09 UA UAU201209669U patent/UA90240U/uk unknown
-
2012
- 2012-08-13 CL CL2012002242U patent/CL2012002242U1/es unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0388133A2 (fr) * | 1989-03-17 | 1990-09-19 | Ngk Insulators, Ltd. | Isolateur de suspension |
FR2680041A1 (fr) | 1991-07-31 | 1993-02-05 | Saint Gobain Emballage | Piece dielectrique en verre pour isolateur electrique. |
CN201425864Y (zh) * | 2009-04-09 | 2010-03-17 | 南京电气(集团)有限责任公司 | 一种盘形悬式绝缘子 |
Non-Patent Citations (1)
Title |
---|
XINGLIANG JIANG ET AL: "Comparison of DC Pollution Flashover Performances of Various Types of Porcelain, Glass, and Composite Insulators", IEEE TRANSACTIONS ON POWER DELIVERY, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 23, no. 2, 1 April 2008 (2008-04-01), pages 1183 - 1190, XP011202267, ISSN: 0885-8977 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2549171A1 (es) * | 2015-05-21 | 2015-10-23 | Universidad De La Rioja | Aislador compuesto con aletas con cámara espiral |
CN105825973A (zh) * | 2016-04-28 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | 一种方便组装拆卸的针式绝缘子 |
Also Published As
Publication number | Publication date |
---|---|
CA2784016A1 (fr) | 2012-09-30 |
CL2012002242U1 (es) | 2012-12-21 |
JP3192219U (ja) | 2014-08-07 |
CN202871419U (zh) | 2013-04-10 |
BR212012020367Y1 (pt) | 2019-08-27 |
BR212012020367Y8 (pt) | 2019-09-10 |
RU127997U1 (ru) | 2013-05-10 |
UA90240U (uk) | 2014-05-26 |
BR212012020367U2 (pt) | 2015-11-17 |
US20140196924A1 (en) | 2014-07-17 |
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