WO2016190823A1 - Boîte de connexions à capteur de décharge partielle intégré - Google Patents

Boîte de connexions à capteur de décharge partielle intégré Download PDF

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Publication number
WO2016190823A1
WO2016190823A1 PCT/TR2015/000213 TR2015000213W WO2016190823A1 WO 2016190823 A1 WO2016190823 A1 WO 2016190823A1 TR 2015000213 W TR2015000213 W TR 2015000213W WO 2016190823 A1 WO2016190823 A1 WO 2016190823A1
Authority
WO
WIPO (PCT)
Prior art keywords
partial discharge
box
link box
cable
link
Prior art date
Application number
PCT/TR2015/000213
Other languages
English (en)
Inventor
Sadettin ERDENİZ
Original Assignee
Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇
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 Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ filed Critical Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇
Priority to PCT/TR2015/000213 priority Critical patent/WO2016190823A1/fr
Priority to GB1702592.5A priority patent/GB2543467B/en
Publication of WO2016190823A1 publication Critical patent/WO2016190823A1/fr

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Classifications

    • 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
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/103—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress
    • H02G15/105—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress connected to the cable shield only
    • H02G15/1055—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress connected to the cable shield only with cross-bonding of cable shields

Definitions

  • the present invention relates to link boxes which is electrically and mechanically integral accessories of cable bonding system.
  • the invention especially relates to a link box with built-in partial discharge sensor for partial discharge measurement in high voltage cable joints and terminations.
  • High voltage cables are always designed with metallic sheath to controls the electric field stress in the cable insulation and also providing return path for fault current.
  • AC voltages may be induced on metallic sheath due to electromagnetic coupling between core and the metallic sheath.
  • special bonding and grounding methods such as single point bonding and cross bonding are used in high voltage cable systems.
  • Link boxes are the metallic enclosures in which bonding and grounding of sheathes of high voltage cable joints or terminations made through removable links. Link boxes also may contain sheath voltage limiters to limit lightning or switching overvoltages of cable system. Link boxes are installed close to high voltage cable joints or terminations and may be installed in places such as underground manholes, aboveground pedestals or tunnel walls and etc. Diagnostic testing of new or service-aged installed high voltage power cable systems which include cable, joints, and terminations, using partial discharge detection, measurement and locating, has a long history. After-laying partial discharge testing on newly installed cable system is an efficient method to find defects in accessories, e.g. improper positioning, cuts or scratches, contaminations etc. Partial discharge testing on service-aged cable systems is a useful indicator of insulation degradation.
  • Partial discharge testing may be carried out on-line (at normal service voltage) or off-line (by an external voltage source). Moreover, continuous on-line monitoring of cable systems has received more attention in recent years. Partial discharge measurement on long high voltage cable systems can be carried out by three different methods including 1 Partial discharge detection at cable end using coupling capacitor, 2 Partial discharge detection at cable accessories using embedded sensors inside the joints or terminations 3 Partial discharge detection at link boxes using inductive sensors (e.g. high frequency current transformers).
  • Test procedure includes installing temporary high frequency current transformers, protection circuit setup and connection of cables to portable partial discharge test device. These steps can be time- consuming procedure. Furthermore, there is a commonly encountered problem for online partial discharge measurement at link boxes. In such cases, split-core high frequency current transformers are needed. Also, mounting these sensors during online conditions requires live-working on energized link box which may be dangerous for test stuff. Also, this procedure is time & labor consuming in long HV cable systems with a great number of link boxes.
  • the Application No. CN 202443038 U relates to high-voltage cable intelligence earth box.
  • Another application which has been encountered as a result of the technical researches is the Patent No. CN 103308832 A which relates to a partial discharge test device for high-voltage cable insulation middle joint and use method.
  • neither of the applications have a novelty which aims to solve the aforementioned drawbacks.
  • the invention configured by being inspired by the current conditions, aims to solve the above mentioned drawbacks.
  • Present invention introduces an all-in-one solution for above mentioned problems of partial discharge measurement in link boxes.
  • the object of the present invention is to avoid unexpected high induced voltages by short circuits which may occur during offline commissioning tests or online tests using this type of link boxes and performing partial discharge testing easily, just by connecting portable partial discharge test device to its terminal box through spark gap protection box.
  • detected partial discharge signals can be sent out of the link box via signal cables through sealed glands. This alternative is very useful in online partial discharge monitoring systems that permanent installation of high frequency current transformers is required.
  • partial discharge sensors shall be installed inside a sealed box so they are not affected by environmental conditions or any other hazards.
  • the present invention is a link box which provides bonding and grounding of sheathes of voltage cable joints or terminations and comprises ⁇ an enclosure body which all other components are placed inside and protects the all components from environmental effects,
  • ⁇ disconnectable crossing bars which provide a cross connection of coaxial bonding cables inside the link box characterized in comprising;
  • a protection box located in additional housing intended for connecting partial discharge test device and also provides protection of test circuit using spark gaps inside.
  • said link box is comprising sensor cable glands which provide sending of detected partial discharge signals out of the link box and monitoring them.
  • FIG. 1 shows components of the present invention.
  • FIG. 2 shows top view present invention in detail.
  • Figure 3 shows schematic view of a high voltage cable system during offline and online partial discharge test.
  • Figure 4 shows arrangement of current invention when it used for online monitoring.
  • the invention relates to a link box (100) with built-in partial discharge sensor (10) for partial discharge measurement in high voltage cable joints and terminations (17, 6).
  • Fig.1 shows components of the present invention.
  • Link box (100) includes a stainless steel enclosure body (1) and stainless steel enclosure cover (2).
  • Enclosure body (1) can be seen as a base frame for mounting internal parts and protection of internal parts against environmental conditions.
  • Three coaxial bonding cables (4) are used to connect metallic sheath of high voltage cable joints (17) to link box (100).
  • Earthing cable (5) is connected to earthing busbar inside the link box (100) and then it's ready to be connected to earthing electrode outside of the link box (100). Sealed penetration of coaxial bonding cables (4) and earthing cable (5) into enclosure body (1) made by cable glands (3).
  • Partial discharge detection is made by three partial discharge sensors (10) (high frequency current transformers) placed around main conductor of coaxial bonding cables (4) or disconnectable crossing bars (18), which are used to provide a cross connection of coaxial bonding cables (4), located inside the link box (100) which act as primary winding for partial discharge sensor (10). Pulses of partial discharge signals are induced to secondary of partial discharge sensor (10) and then transmitted to additional housing (6) using signal cables (11).
  • Fig.2 shows top view of present invention in detail.
  • Detected partial discharge signals enters a sealed additional housing (6) located on the enclosure cover (2). Sealing of this additional housing (6) made by a gasket (8).
  • This additional housing (6) contains a protection box (9) with protective spark gaps inside.
  • there is a galvanic isolation between primary and secondary side of partial discharge sensors (10) but electromagnetic induction on signal cables (11) and BNC input sockets (14) may occur during transient conditions. So this protection circuit is necessary to prevent any danger to portable test device or test stuff during tests.

Landscapes

  • Testing Relating To Insulation (AREA)

Abstract

L'invention concerne une boîte de connexions (100) qui permet d'assembler et de mettre à la masse les gaines de jonctions ou terminaisons (17, 16) de câbles à haute tension comprenant des capteurs de décharge partielle (10) placés autour de câbles de liaison coaxiaux (4), situés à l'intérieur de la boîte de connexions (100), qui servent d'enroulement primaire pour un capteur de décharge partielle (10) et qui fournissent la détection d'une décharge partielle dans des gaines de jonctions de câbles à haute tension (17) et de terminaisons de câbles (16); un boîtier supplémentaire (6), situé sur un couvercle d'enveloppe (2), auquel des impulsions de signaux de décharge partielle sont transmises au moyen de câbles de signal (11) connectant les capteurs de décharge partielle (10) à une boîte de protection (9) et qui permet l'exécution d'une mesure de décharge partielle simplement par ouverture d'un couvercle de boîtier (7) sans ouvrir le couvercle d'enveloppe (2), et une boîte de protection (9), située dans le boîtier supplémentaire (6), destinée à la connexion d'un dispositif d'essai de décharge partielle et qui fournit également la protection du circuit à l'aide d'éclateurs à l'intérieur et également de presse-étoupes de câble de capteur (12) pour envoyer les signaux de décharge partielle à un système de surveillance de décharge partielle, et qui peut être recouverte par des capuchons filetés (13) quand cette option n'est pas utilisée.
PCT/TR2015/000213 2015-05-28 2015-05-28 Boîte de connexions à capteur de décharge partielle intégré WO2016190823A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/TR2015/000213 WO2016190823A1 (fr) 2015-05-28 2015-05-28 Boîte de connexions à capteur de décharge partielle intégré
GB1702592.5A GB2543467B (en) 2015-05-28 2015-05-28 Link box with built-in partial discharge sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2015/000213 WO2016190823A1 (fr) 2015-05-28 2015-05-28 Boîte de connexions à capteur de décharge partielle intégré

Publications (1)

Publication Number Publication Date
WO2016190823A1 true WO2016190823A1 (fr) 2016-12-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2015/000213 WO2016190823A1 (fr) 2015-05-28 2015-05-28 Boîte de connexions à capteur de décharge partielle intégré

Country Status (2)

Country Link
GB (1) GB2543467B (fr)
WO (1) WO2016190823A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019194754A1 (fr) * 2018-04-04 2019-10-10 Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ Boîte de connexions comprenant un diviseur de tension de type isolant intégré et un capteur de décharge partielle inductif
US10686308B1 (en) 2019-04-05 2020-06-16 hvGrid-tech Inc. Sheath-bonding link box
CN111830373A (zh) * 2020-06-15 2020-10-27 贵州电网有限责任公司 一种便于操作使用的电力设备局部放电检测装置
US11183828B1 (en) 2020-06-12 2021-11-23 hvGrid-tech Inc. Device with health monitoring
US20220166199A1 (en) * 2019-04-05 2022-05-26 hvGrid-tech Inc. Sheath-bonding link box
FR3134896A1 (fr) * 2022-04-26 2023-10-27 Nexans Dispositif de surveillance du fonctionnement de câbles électriques dans un réseau maillé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04183219A (ja) * 1990-11-16 1992-06-30 Showa Electric Wire & Cable Co Ltd 電力ケーブル線路およびその部分放電検出方法
EP2392934A1 (fr) * 2010-06-02 2011-12-07 Omicron electronics GmbH Procédé et appareil de surveillance d'un parafoudre d'un système de câble
CN202443038U (zh) 2012-02-22 2012-09-19 广东电网公司珠海供电局 高压电缆智能接地箱
CN103308832A (zh) 2013-05-31 2013-09-18 国家电网公司 一种高压电缆绝缘中间接头局部放电测试装置及使用方法
CN103427390A (zh) * 2013-08-24 2013-12-04 广州友智电气技术有限公司 智能型交叉互联箱装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04183219A (ja) * 1990-11-16 1992-06-30 Showa Electric Wire & Cable Co Ltd 電力ケーブル線路およびその部分放電検出方法
EP2392934A1 (fr) * 2010-06-02 2011-12-07 Omicron electronics GmbH Procédé et appareil de surveillance d'un parafoudre d'un système de câble
CN202443038U (zh) 2012-02-22 2012-09-19 广东电网公司珠海供电局 高压电缆智能接地箱
CN103308832A (zh) 2013-05-31 2013-09-18 国家电网公司 一种高压电缆绝缘中间接头局部放电测试装置及使用方法
CN103427390A (zh) * 2013-08-24 2013-12-04 广州友智电气技术有限公司 智能型交叉互联箱装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EMELEC ELEKTRIK: "EM Elektrik Malzemeleri Yüklenim San. Tic. Ltd. Sti.", 12 July 2012 (2012-07-12), XP055249707, Retrieved from the Internet <URL:http://web.archive.org/web/20120712194515/http://www.emelec.com.tr/LinkBoxTestDownload.aspx> [retrieved on 20160212] *
EMELEC ELEKTRIK: "TT 0710/01 TYPE TEST OF 3 Phase Cross Bonding Link Box, Type: LB.U.CB.3SA.3.1", 12 July 2012 (2012-07-12), pages 0 - 51, XP055249706, Retrieved from the Internet <URL:http://www.emelec.com.tr/download/testbox/TT0710-01 IPH-UCB.pdf> [retrieved on 20160212] *
W KOLTUNOWICZ ET AL: "PD MONITORING OF HV XLPE CABLE LINES", PROCEEDINGS OF THE 16TH INTERNATIONAL SYMPOSIUM ON HIGH VOLTAGE ENGINEERING CAPE TOWN, SOUTH AFRICA 24-28 AUGUST 2009, 24 August 2009 (2009-08-24), pages 1 - 6, XP055176447, ISBN: 978-0-62-044584-9, Retrieved from the Internet <URL:http://www.dii.unipd.it/~pesavento/download/ISH2009/Papers/Paper-D-50.pdf> [retrieved on 20150313] *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019194754A1 (fr) * 2018-04-04 2019-10-10 Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ Boîte de connexions comprenant un diviseur de tension de type isolant intégré et un capteur de décharge partielle inductif
US10686308B1 (en) 2019-04-05 2020-06-16 hvGrid-tech Inc. Sheath-bonding link box
WO2020198875A1 (fr) * 2019-04-05 2020-10-08 hvGrid-tech Inc. Boîte de connexions de liaison de gaine
US20220166199A1 (en) * 2019-04-05 2022-05-26 hvGrid-tech Inc. Sheath-bonding link box
EP3949045A4 (fr) * 2019-04-05 2023-03-22 Hvgrid-Tech Inc. Boîte de connexions de liaison de gaine
US11183828B1 (en) 2020-06-12 2021-11-23 hvGrid-tech Inc. Device with health monitoring
WO2021250465A1 (fr) * 2020-06-12 2021-12-16 hvGrid-tech Inc. Dispositif à surveillance de santé
CN111830373A (zh) * 2020-06-15 2020-10-27 贵州电网有限责任公司 一种便于操作使用的电力设备局部放电检测装置
FR3134896A1 (fr) * 2022-04-26 2023-10-27 Nexans Dispositif de surveillance du fonctionnement de câbles électriques dans un réseau maillé
EP4270023A1 (fr) * 2022-04-26 2023-11-01 Nexans Dispositif de surveillance du fonctionnement de câbles électriques dans un réseau maillé

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GB2543467B (en) 2021-03-03
GB2543467A (en) 2017-04-19
GB201702592D0 (en) 2017-04-05

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