WO2010057422A1 - Isolateur pouvant améliorer la résistance électrique d'une isolation externe - Google Patents

Isolateur pouvant améliorer la résistance électrique d'une isolation externe Download PDF

Info

Publication number
WO2010057422A1
WO2010057422A1 PCT/CN2009/074960 CN2009074960W WO2010057422A1 WO 2010057422 A1 WO2010057422 A1 WO 2010057422A1 CN 2009074960 W CN2009074960 W CN 2009074960W WO 2010057422 A1 WO2010057422 A1 WO 2010057422A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulator
barrier
electrode
improving
electrical strength
Prior art date
Application number
PCT/CN2009/074960
Other languages
English (en)
Chinese (zh)
Inventor
张德赛
Original Assignee
武汉市德赛电力设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉市德赛电力设备有限公司 filed Critical 武汉市德赛电力设备有限公司
Priority to EP09827171.1A priority Critical patent/EP2360703A4/fr
Publication of WO2010057422A1 publication Critical patent/WO2010057422A1/fr
Priority to US13/111,991 priority patent/US20110290533A1/en

Links

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
    • H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges

Definitions

  • the present invention relates to a line insulator, a post insulator, and a bushing insulator having high electrical strength.
  • the power system consists of three parts: the generation of electrical energy, the delivery of electrical energy, and the use of electrical energy.
  • the transmission of electrical energy requires a complete set of equipment, which consists mainly of transmission lines, towers, insulators and transformers, where the insulators are used to secure the transmission lines and maintain a certain insulation distance from the ground.
  • Insulators can be divided into three main forms depending on the application: line insulators, post insulators, and bushing insulators.
  • the line insulator is an insulating component for fixing the overhead transmission line
  • the pillar insulator is an insulating member for supporting the live part of the high-voltage electrical equipment
  • the sleeve insulator is an insulating member for passing the live conductor through the metal casing of the high-voltage electrical equipment or the busbar through the wall.
  • the structure of the line insulator changes as the transmission voltage increases and the insulation material progresses.
  • the pin insulator 13 of Fig. 1 can be used. Since the insulator is a "breakable" insulator, line pillar insulators are currently used in many regions, depending on the insulating material used.
  • the porcelain material line column insulator 14 in Fig. 2 the composite material column column insulator 15 in Fig. 3.
  • the line insulators are generally shown using the porcelain and glass disk suspension insulators 16 of Figure 4 and the insulator strings 17 of Figure 5 thereof. Due to the development of electric porcelain production processes and organic materials, porcelain and composite rod-shaped suspension insulators have also been promoted, such as the porcelain rod-shaped suspension insulators in Fig. 6, and the composite rod-shaped suspension insulators in the figure. . As the transmission voltage is further increased, the porcelain rod-shaped suspension insulator string 20 in Fig. 8 also begins to use.
  • the upper equalizing ring 10 of FIG. 9 is often used ( Also referred to as a protective fitting, the lower equalizing ring 11 in FIG.
  • the post insulators are the power station post insulators 23 in Fig. 11. When the voltage level is high, several post insulators are usually assembled into the insulator post 24 in Fig. 12. Since the voltage distribution along the surface of the insulator is not uniform, the general use of Fig. 12 is adopted. The upper equalizing ring 10 in the middle.
  • the bushing insulator is made of the porcelain bushing insulator 25 in Fig. 13.
  • the composite casing can be replaced by a composite material because of its lightness and stain resistance.
  • the insulating properties of air are widely used in the insulation of high-voltage electrical equipment.
  • the electrical strength of insulators is generally divided into destructive discharges inside the insulator and air discharge along the outer surface of the insulator.
  • the breakdown voltage of the insulating material In operation, in order to avoid breakdown inside the insulator, the breakdown voltage of the insulating material must be about 1.5 times higher than the surface discharge voltage, so the electrical strength of the insulator usually depends on the latter. Since the surface flashover of the insulator is the result of air discharge along its surface, and the insulation of the surface of the insulator exposed to the air is called external insulation, the electrical strength of the insulator is often referred to as the outer dielectric strength of the insulator. External insulation strength, we must study the theory of gas discharge.
  • the Thomson gas discharge theory is only suitable for low pressure conditions.
  • H. Rlether and JMMeek jointly proposed a gas discharge theory suitable for atmospheric conditions.
  • - Flow theory At this time, the voltage level of the insulator has been developed to 287 kV. Unfortunately, this new discharge theory is still excluded from the insulator field.
  • the above-mentioned Thomson gas discharge theory and flow injection theory presuppose that there is a uniform electric field between the electrodes, and in the insulation structure of high-voltage electrical equipment, most of the electric fields are extremely uneven electric fields.
  • the gas discharge in a very uneven electric field is significantly different from that of a uniform electric field.
  • the electrode gap often produces corona discharge near the electrode having a small radius of curvature before complete breakdown. Corona discharge originates from one electrode, but does not reach the other electrode, and constantly changes position. At this stage of the discharge, the presence of space charge is of particular importance.
  • the corona phenomenon in the extremely uneven electric field is not considered.
  • the insulation distance of the insulator will increase, so the radius of curvature of the electrode will also appear small, which will result in corona discharge that does not occur at low voltage.
  • the space charge generated by corona discharge changes between the electrodes.
  • the electric field distribution, the further development of the discharge will vary with the distribution of the electric field, and the electric field distribution at this time is determined not only by the shape of the electric field and the distance between the electrodes, but also by the space charge generated by the development of the gas free process. .
  • the flashover voltage of the insulator is basically determined by the distance between the two electrodes. According to this point of view, as long as the distance between the two electrodes is constant, the insulation strength between them is constant. This view is reflected in all domestic and international standards for insulation of electrical equipment, as well as in the external insulation structure of all electrical equipment. At low voltages, air is not ionized, so there is no moving charge between the two electrodes of the insulator, so the electrostatic field theory can be used to guide the external insulation design of the low-voltage insulator.
  • the creeping discharge of the insulator is a long gap discharge.
  • the breakdown process of the gap is related to corona discharge and flow column discharge.
  • the gap distance exceeds one meter, the creeping discharge of the insulator is a long gap discharge.
  • the breakdown process of the gap is related to corona discharge, flow column discharge and pilot discharge, and in the design of the conventional insulator, the above is not treated differently.
  • Two different types of discharge 5.
  • the insulator is not integrated with the tower and the transmission line, and then the flashover voltage of the insulator is considered on the basis of this whole.
  • the design idea of the grading ring is still based on the electrostatic field theory. Therefore, after the shape of the grading ring is determined, the flashover voltage of the insulator is from one ring to the other. Or the distance between the two rings is determined, which still falls into the box of traditional design ideas.
  • the insulators are basically the same in shape, the symmetrical electric field is applied after the voltage is applied. However, when the insulator hangs the power line and is connected to the tower, the insulator is in an asymmetric electric field. Because the tower and the transmission line are both conductors, the transmission line and the tower are the attractors of the power line. They can change the electric field around the insulator and also change the flashover path of the insulator. Therefore, the flashover voltage of the insulator is closely related to the tower and the transmission line. Related. The form of the power line near the insulator and the form of the tower near the insulator can have a large effect on the electrical performance of the insulator. Summary of the invention
  • An object of the present invention is to provide an insulator which is provided with a barrier on all voltage levels of the line insulator, the post insulator and the bushing insulator to improve the electrical insulation strength of the outer insulation.
  • the realization of the object of the present invention is an insulator capable of improving the electrical strength of the outer insulation, and an upper barrier is disposed outside the upper electrode of the insulator, and a lower barrier is disposed outside the lower electrode, and an intermediate barrier is disposed outside the series electrode of the insulator string.
  • the upper and lower pressure equalizing rings of the upper and lower equalizing ring insulators are provided with upper and lower ring barriers, and an iron tower barrier and a power line barrier are arranged near the iron tower and the power line adjacent to the insulator.
  • the electrostatic field theory fails at this time.
  • the flashover voltage of the insulator cannot be determined only by the electrostatic field, but should be caused by the electric field and the electric field.
  • the charge is determined together.
  • the form of motion of the charge causes a change in the flashover path, so the present invention will take into account the space charge factor based on the structural form of the existing insulator, that is, in the case where the electrode shape of the insulator and the electrode distance remain unchanged.
  • a barrier between the two electrodes of the insulator and a plurality of barriers that increase the strength of the outer insulation of the insulator, the conventional insulator The structure of the two elements is changed to a three-element structure, that is, composed of three parts: an electrode, an insulator, and a barrier.
  • the barrier prevents the movement of charge from one region to another, and the motion charge can be diffused in the region where it exists, reducing the electric field strength in the region, thereby redistributing the electric field distribution in each region.
  • the area where the electric field distribution is in a state of tension is alleviated.
  • the space charge on the barrier surface changes the path of the discharge, enhances the classification of the discharge, and prolongs the discharge time, so that the flashover voltage of the insulator can be significantly improved.
  • the barrier setting increases the initial corona voltage, thus reducing radio interference, reducing the power loss of the high voltage transmission line, and also reducing the deterioration of the insulator; the barrier itself increases the creepage distance, and the barrier is made of organic material. Therefore, the pollution flashover voltage of the insulator is increased; the barrier can also reduce the surface of the insulator to be wetted by rain, thereby increasing the wet flashover voltage; the barrier will also form a harmony between the traditional insulator and the tower and the transmission line. The overall strength of the insulator is improved on the basis of this whole.
  • the invention is also applicable to high voltage switchgear.
  • Fig. 1 is a front view showing the structure of the present invention in which a barrier is provided on a conventional porcelain pin insulator
  • Fig. 2 is a front view showing the structure of the present invention in which a barrier is provided on a conventional ceramic post insulator
  • Fig. 3 is a conventional composite wire post insulator. a front view of the structure of the present invention on which a barrier is placed
  • Figure 4 is a front elevational view of the structure of the present invention in which a barrier is placed on the top first insulator in a conventional porcelain or glass disk suspension insulator string,
  • Figure 5 is a front view showing the structure of the present invention in which a barrier is provided on an insulator of a middle portion of a series of insulators in a conventional porcelain or glass disk-shaped suspension insulator.
  • Figure 6 is a front view showing the structure of the present invention in which a barrier is provided on a conventional ceramic circuit rod-shaped suspension insulator
  • Figure 7 is a front view showing the structure of the present invention in which a barrier is provided on a conventional composite material line-shaped suspension insulator
  • Figure 8 is a front elevation view showing the structure of the present invention in which a barrier is provided on an insulator of a central tandem portion in a conventional porcelain-line rod-shaped suspension insulator string.
  • Figure 9 is a front view of the structure of the present invention in which a barrier is provided in the case where a line insulator is used with a pressure equalizing ring,
  • Figure 10 is a front view of the structure of the present invention in which a barrier is provided in the case of a voltage equalizing ring under the use of a line insulator,
  • Figure 11 is a front view of the structure of the present invention in which a barrier is provided on a power station post insulator
  • Figure 12 is a front view of the structure of the present invention in which a barrier is provided on an insulator post composed of several post insulators
  • Figure 13 is a front elevational view of the structure of the present invention with a barrier disposed on the bushing insulator,
  • Figure 14 is a front view showing the structure of the present invention in which a floating electrode and a barrier are provided on a long post insulator
  • Figure 15 is a front view showing the structure of the present invention in which a floating electrode and a barrier are provided on a long composite suspension insulator.
  • Figure 16 is a front elevational view of another embodiment of the present invention in which a suspension electrode and a barrier are disposed on a long composite suspension insulator,
  • Figure 17 is a front view showing the structure of the present invention in which a suspension electrode and a barrier are provided on a long sleeve insulator
  • Figure 18 is a front view showing the structure of the present invention in which a barrier is provided on an electrified railway wrist arm insulator
  • Figure 19 is a view showing a barrier provided near the iron tower.
  • the invention will be based on the structural form of the existing insulator, that is, in the case where the electrode shape of the insulator and the electrode distance are constant, considering the space charge factor, a weight and a plurality of electrodes can be provided between the two electrodes of the insulator to improve the insulator.
  • the barrier of dielectric strength changes the two-element structure of the conventional insulator to a three-element structure, that is, the electrode, the insulator and the barrier.
  • the barrier should be placed near the electrode, so that the insulator is blocked by the barrier during the corona phase. use.
  • the barrier arrangement increases the initial corona voltage, thus reducing radio interference, reducing the power loss of the high voltage transmission line, and also reducing the degradation of the insulator.
  • the distribution of the electric field can be represented by equipotential lines, which have different inclinations. These inclinations are used to design the shape of the barrier so that the shape is as parallel as possible to the equipotential surface, so that the flashover voltage is obtained. Larger increase, because the charged particles cannot absorb energy from the electric field when moving along the barrier surface parallel to the equipotential surface, so the discharge is not easy to develop.
  • the barrier itself can reduce the surface of the insulator that is wetted by rain, and it can increase the wet flashover voltage. At the same time, the barrier itself increases the creepage distance, and the barrier is made of organic materials, so it is improved. The dirty flashover voltage of the insulator.
  • the difference between the disk-shaped suspension insulator string and the rod-shaped suspension insulator should be considered, and the difference between the porcelain and the composite rod-shaped suspension insulator should also be considered.
  • the barrier of the post insulator consider the difference between single and multiple series.
  • the barrier of the casing insulator consider the difference between the short casing and the long casing.
  • the above insulator has a voltage equalizing ring, the corresponding barrier arrangement should also be considered. After considering the factors of the tower and the power line, the number, position and shape of the barriers will be increased to increase the outer insulation strength of the insulator.
  • FIG. 1 the pin insulator 13
  • the porcelain material line column insulator 14 the composite material column insulator 15, the porcelain rod suspension insulator 18,
  • the upper rod 8 of the composite rod-shaped suspension insulator 19 and the porcelain sleeve insulator 25 is provided with an upper barrier 1 and the lower electrode 9 is provided with a lower barrier 2.
  • An upper barrier 1 is disposed outside the upper electrode 8 of the first insulator 16 at the top of the ceramic disk-shaped suspension insulator string of Fig. 4.
  • the upper electrode 8 of the porcelain and glass disc suspension insulator string 17 of Fig. 5 is provided with an upper barrier 1 , and the intermediate barrier 3 is disposed outside the middle insulator portion and the last insulator of the bottom portion.
  • An intermediate barrier 3 is disposed outside the series of electrodes in the middle of the ceramic rod-shaped suspension insulator string 20 of FIG.
  • the upper ring barrier 4 is disposed outside the upper equalizing ring 10 of the rod-shaped suspension insulator 21 of FIG. Barrier 4 Also suitable for the upper equalizing ring of porcelain and glass insulator strings.
  • a lower ring barrier 5 is disposed outside the lower equalizing ring 11 of the insulator string 22 in FIG. Barrier 5 is also suitable for the lower equalizing ring of the composite insulator.
  • An upper barrier 1 is disposed outside the upper electrode 8 of the power station post insulator 23 of Fig. 11, and a lower barrier 2 is disposed outside the lower electrode 9.
  • the barrier 2 can also be fixed between the two sheds.
  • Figure 12 is an insulator post 24 composed of a plurality of post insulators.
  • An upper barrier 1 is disposed outside the upper electrode 8 of the insulator post 24, a lower barrier 2 is disposed outside the lower electrode 9, and an intermediate barrier 3 is disposed outside the middle serial electrode.
  • An upper ring barrier 4 is provided outside the ring 10. The barrier 3 can also be fixed between the two sheds.
  • the barrier 2 in Fig. 13 can also be fixed between the two sheds of the porcelain bushing insulator 25.
  • Barrier 2 is also suitable for composite casing insulators.
  • the floating electrode 7 is first disposed on the insulator of the long post insulator 26, the long composite suspension insulator 27, the other long composite suspension insulator 28, and the long sleeve insulator 30.
  • the distance between the suspension electrodes is made less than one meter, and then the intermediate barrier 3 is placed near the suspension electrode 7.
  • the intermediate barrier 3 can also be fixed between the two skirts.
  • an upper barrier 1 is disposed outside the upper electrode 8 of the electrified railway wrist arm insulator 29, and a lower barrier 2 is disposed outside the lower electrode 9.
  • an iron barrier 6 and a power line barrier are placed near the insulator.
  • the barrier 6 and the transmission line barrier form a harmonious whole with the traditional insulator and the iron tower and the transmission line, so that the outer insulation strength of the insulator is further improved on the basis of the whole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)

Abstract

L'invention concerne un isolateur pouvant améliorer la résistance électrique d'une isolation externe. Un élément protecteur supérieur (1) et un élément protecteur inférieur (2) sont disposées hors d'une électrode supérieure (8) et d'une électrode inférieure (9) de l'isolateur. Un élément protecteur intermédiaire (3) est disposé hors des électrodes en cascade d'une chaîne d'isolateurs. Un élément protecteur annulaire supérieur (4) et un élément protecteur annulaire inférieur (5) sont disposés hors d'un anneau d'égalisation supérieur (10) et d'un anneau d'égalisation inférieur (11) de l'isolateur qui comporte l'anneau d'égalisation supérieur (10) et l'anneau d'égalisation inférieur (11). Un élément protecteur pour pylône en fer (6) et un élément protecteur pour lignes de transmission sont disposés à proximité d'un pylône en fer (12) et des lignes de transmission proches de l'isolateur.
PCT/CN2009/074960 2008-11-20 2009-11-16 Isolateur pouvant améliorer la résistance électrique d'une isolation externe WO2010057422A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09827171.1A EP2360703A4 (fr) 2008-11-20 2009-11-16 Isolateur pouvant ameliorer la resistance electrique d'une isolation externe
US13/111,991 US20110290533A1 (en) 2008-11-20 2011-05-20 Insulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810197722.5 2008-11-20
CN2008101977225A CN101409120B (zh) 2008-11-20 2008-11-20 一种能提高外绝缘电气强度的绝缘子

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/111,991 Continuation US20110290533A1 (en) 2008-11-20 2011-05-20 Insulator

Publications (1)

Publication Number Publication Date
WO2010057422A1 true WO2010057422A1 (fr) 2010-05-27

Family

ID=40572083

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/074960 WO2010057422A1 (fr) 2008-11-20 2009-11-16 Isolateur pouvant améliorer la résistance électrique d'une isolation externe

Country Status (4)

Country Link
US (1) US20110290533A1 (fr)
EP (1) EP2360703A4 (fr)
CN (1) CN101409120B (fr)
WO (1) WO2010057422A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101409120B (zh) * 2008-11-20 2011-09-14 武汉市德赛电力设备有限公司 一种能提高外绝缘电气强度的绝缘子
CN102394159A (zh) * 2011-11-03 2012-03-28 湖北鑫德赛绝缘技术有限公司 一种能提高外绝缘强度，屏障安装位置灵活的绝缘子
CN102682934B (zh) * 2011-12-01 2014-01-22 湖北鑫德赛绝缘技术有限公司 一种带组合式屏障的绝缘子
CN102522164A (zh) * 2011-12-16 2012-06-27 湖北鑫德赛绝缘技术有限公司 一种金具上模压成型或注射成型有整体屏障的绝缘子
CN103245895B (zh) * 2013-04-22 2015-06-24 安徽省电力科学研究院 高压试验加压用防电晕放电连接装置
CN105845287B (zh) * 2016-05-26 2017-11-03 国网新疆电力公司乌鲁木齐供电公司 一种三元素结构的户外支柱绝缘子柱
CN105870857A (zh) * 2016-05-26 2016-08-17 国网新疆电力公司乌鲁木齐供电公司 一种三元素结构的高压穿墙套管
CN105845290B (zh) * 2016-05-26 2017-10-13 国网新疆电力公司乌鲁木齐供电公司 一种免更换的棒形悬式线路复合绝缘子
CN107507682A (zh) * 2017-08-26 2017-12-22 苏州灵亿易电子科技有限公司 一种能截断工频续流的防雷支柱绝缘子
CN111403128B (zh) * 2020-04-02 2021-10-08 国家电网有限公司 一种用于直流输电的支柱绝缘子及直流输电设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1075659C (zh) * 1996-03-14 2001-11-28 株式会社日立制作所 直流绝缘套管
CN101409120A (zh) * 2008-11-20 2009-04-15 武汉市德赛电力设备有限公司 一种能提高外绝缘电气强度的绝缘子
CN201331982Y (zh) * 2008-11-20 2009-10-21 武汉市德赛电力设备有限公司 一种能提高外绝缘电气强度的绝缘子

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1194957A (en) * 1916-08-15 Insulator
US1451968A (en) * 1923-04-17 Insulator
US729440A (en) * 1902-10-31 1903-05-26 Louis Steinberger Locking-hanger.
US826589A (en) * 1905-01-31 1906-07-24 Max Meirowsky Electrical insulator.
US861094A (en) * 1906-06-04 1907-07-23 Westinghouse Electric & Mfg Co Strain-insulator.
US1362388A (en) * 1915-07-17 1920-12-14 Gen Electric High-tension insulator
US1502829A (en) * 1918-03-13 1924-07-29 Westinghouse Electric & Mfg Co Insulated strain rod
US1458756A (en) * 1919-10-25 1923-06-12 Locke Insulator Corp Strain insulator
US1637374A (en) * 1922-06-29 1927-08-02 Westinghouse Electric & Mfg Co Insulator
US1664208A (en) * 1922-09-16 1928-03-27 Westinghouse Electric & Mfg Co Insulator
US1669529A (en) * 1922-09-19 1928-05-15 Westinghouse Electric & Mfg Co Insulator
US1543508A (en) * 1923-08-15 1925-06-23 George F Neal Electrical insulator
US1880259A (en) * 1925-06-02 1932-10-04 Knapp Woldemar Hugo Insulating device for high voltage lines
US1770130A (en) * 1926-05-27 1930-07-08 Russell P Dunmire Insulator
US1799580A (en) * 1927-02-07 1931-04-07 Brown Co Insulator
US1730232A (en) * 1927-04-28 1929-10-01 Westinghouse Electric & Mfg Co Insulator structure
US1717885A (en) * 1928-03-17 1929-06-18 Rubber Shock Insulator Corp Mounting for electric conductors
US2317799A (en) * 1941-04-14 1943-04-27 Mycalex Corp Of America Line insulator
US3014088A (en) * 1960-01-18 1961-12-19 A O Austin Inc Floating sleeve insulator
US3435397A (en) * 1966-02-14 1969-03-25 Mc Graw Edison Co Combination overvoltage protective device and conductor support
US3448343A (en) * 1967-05-09 1969-06-03 Mc Graw Edison Co Combined overvoltage protective device and conductor support
US3585277A (en) * 1969-11-17 1971-06-15 Chance Co Ab Midspan electrical conductor spacer
US3963858A (en) * 1975-04-21 1976-06-15 Massachusetts Institute Of Technology High-voltage electrical insulator adapted to prevent flashover
JPS5234389A (en) * 1975-09-10 1977-03-16 Sumitomo Electric Ind Ltd Arc resisting insulated rod
US4185161A (en) * 1977-08-22 1980-01-22 The United States Of America As Represented By The Secretary Of The Navy Modular guyline insulator
FR2412150A1 (fr) * 1977-12-14 1979-07-13 Ceraver Isolateur electrique de ligne en matiere organique
DE2904748A1 (de) * 1979-02-08 1980-08-14 Pfisterer Elektrotech Karl Schutzvorrichtung fuer eine einrichtung zum anhaengen von freileitungsseilen an einen geerdeten traeger
US4291193A (en) * 1980-05-09 1981-09-22 The United States Of America As Represented By The United States Department Of Energy Self-monitoring high voltage transmission line suspension insulator
JPS62178489U (fr) * 1986-04-30 1987-11-12
JPH0831292B2 (ja) * 1987-03-06 1996-03-27 東京電力株式会社 避雷碍子
JPH071653B2 (ja) * 1989-09-13 1995-01-11 日本碍子株式会社 耐雷ホーン碍子装置
FR2658614A1 (fr) * 1990-02-20 1991-08-23 Sediver Appareil electrique muni d'un dispositif de signalisation de defaut.
US5147984A (en) * 1990-12-04 1992-09-15 Raychem Corporation Cap and pin insulator
CN100412996C (zh) * 2006-01-17 2008-08-20 中国南方电网有限责任公司电网技术研究中心 ±800kV特高压直流合成绝缘子
CN201036090Y (zh) * 2007-04-03 2008-03-12 包启章 复合悬式盆形绝缘子

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1075659C (zh) * 1996-03-14 2001-11-28 株式会社日立制作所 直流绝缘套管
CN101409120A (zh) * 2008-11-20 2009-04-15 武汉市德赛电力设备有限公司 一种能提高外绝缘电气强度的绝缘子
CN201331982Y (zh) * 2008-11-20 2009-10-21 武汉市德赛电力设备有限公司 一种能提高外绝缘电气强度的绝缘子

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HOU, WENWEI.: "Analysis on Application of Barrier in Engineering.", JIANG SU ELECTRICAL EQUIPMENT., no. 4, 2001, pages 33, 34 AND 40, XP008169434 *

Also Published As

Publication number Publication date
CN101409120B (zh) 2011-09-14
US20110290533A1 (en) 2011-12-01
EP2360703A4 (fr) 2015-04-08
EP2360703A1 (fr) 2011-08-24
CN101409120A (zh) 2009-04-15

Similar Documents

Publication Publication Date Title
WO2010057422A1 (fr) Isolateur pouvant améliorer la résistance électrique d'une isolation externe
US8300379B2 (en) High-voltage insulator and a high-voltage electric power line using said insulator
Al-Gheilani et al. Stress control methods on a high voltage insulator: A review
WO2020215650A1 (fr) Parafoudre à éclateurs en série externes et système de protection contre la foudre
CN101697299B (zh) 架空线路绝缘导线用避雷绝缘子
CN101763922A (zh) 输电线路复合绝缘子的防雷保护方法和装置
CN105977789A (zh) 一种螺旋形多间隙避雷器
CN107293941A (zh) 一种多腔室串联间隙避雷器
Akkal et al. Improving electrical performance of ehv post station insulators under severe icing conditions using modified grading rings
CN105529617B (zh) 一种线路避雷器
RU108206U1 (ru) Изолятор-разрядник
CN201331982Y (zh) 一种能提高外绝缘电气强度的绝缘子
CN207910458U (zh) 高压直流架空输电线路上虚拟正极诱导式避雷线防雷装置
CN207116125U (zh) 能改善高压电极附近电场分布的绝缘子
CN105355342A (zh) 一种线路避雷器
CN102394159A (zh) 一种能提高外绝缘强度，屏障安装位置灵活的绝缘子
Podporkin et al. Lightning protection of overhead lines rated at 3–35 kV and above with the help of multi-chamber arresters and insulator-arresters
RU2378725C1 (ru) Высоковольтная линия электропередачи и высоковольтный изолятор для этой линии
CN109786046B (zh) 500kV线路防雷防冰闪复合绝缘子
CN108231300B (zh) 一种防雷绝缘子的并联间隙装置
CN106128659B (zh) 一种特高压电瓷外绝缘出线套管
CN206992479U (zh) 一种多腔室串联间隙避雷器
CN111524665A (zh) 一种架空输电线路用y型双间隙防雷装置
CN201514819U (zh) 架空线路绝缘导线用避雷绝缘子
Venkatesan et al. A case study on voltage uprating of overhead lines-air clearance requirements

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09827171

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2009827171

Country of ref document: EP