WO2012024942A1 - Terminal d'entrée de signal d'essai pour la recherche du point de défaillance d'un câble à très haute tension sur un équipement gis de type universel - Google Patents

Terminal d'entrée de signal d'essai pour la recherche du point de défaillance d'un câble à très haute tension sur un équipement gis de type universel Download PDF

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Publication number
WO2012024942A1
WO2012024942A1 PCT/CN2011/073745 CN2011073745W WO2012024942A1 WO 2012024942 A1 WO2012024942 A1 WO 2012024942A1 CN 2011073745 W CN2011073745 W CN 2011073745W WO 2012024942 A1 WO2012024942 A1 WO 2012024942A1
Authority
WO
WIPO (PCT)
Prior art keywords
input terminal
sealing plate
hand hole
cable
conductor
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/073745
Other languages
English (en)
Chinese (zh)
Inventor
李骏
葛广勇
王大方
顾渊博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI MUNICIPLE ELECTRIC POWER Co
Original Assignee
SHANGHAI MUNICIPLE ELECTRIC POWER Co
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 SHANGHAI MUNICIPLE ELECTRIC POWER Co filed Critical SHANGHAI MUNICIPLE ELECTRIC POWER Co
Publication of WO2012024942A1 publication Critical patent/WO2012024942A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location

Definitions

  • the utility model belongs to the field of power supply/distribution of power systems, in particular to a fault finding device for GIS equipment.
  • GIS Gas Insulated Substation
  • GIS Gas Insulated Substation
  • It is usually a high-voltage device composed of circuit breakers, bus bars, isolating switches, voltage transformers, current transformers, lightning arresters, bushings, etc. Electrical device, and all enclosed in a grounded metal casing, in a metal case book
  • the sulphur hexafluoride (SF6) gas is filled with a certain pressure as an insulating and arc extinguishing medium.
  • GIS uses sulfur hexafluoride (SF6) gas with excellent insulation and arc extinguishing properties as insulation and arc extinguishing medium, and seals all high-voltage electrical components/components in grounded metal cylinders, therefore, with traditional open type Compared with the power distribution device, GIS has the advantages of small footprint, complete sealing of components without environmental interference, high operational reliability, convenient operation, long maintenance period, small maintenance workload, rapid installation, low operating cost, no electromagnetic interference, etc. . Therefore, GIS is particularly suitable for use in urban substations, enterprise substations, mountainous areas or heavily polluted areas (occupations).
  • SF6 sulfur hexafluoride
  • the ultra-high voltage power grid of the applicant's city runs a variety of GIS equipment of various types, numerous types and types. As a 220 kV, 110 kV main grid and main substation equipment in the city center, GIS equipment is connected to UHV cables in large quantities to deliver electrical energy.
  • a cable termination hand hole with a detachable cover plate is provided at the external cable termination of all GIS equipment.
  • the cable terminal hand hole at the external cable end of the GIS device (referred to as the GIS cable terminal hand hole in the industry) is used as the input hole for finding the signal cable.
  • the field staff needs to open the cover plate of the GIS cable terminal hand hole. At this time, the GIS internal sealing parts that are extremely sensitive to the environment are exposed. In the environment (ie, non-insulated gas pressure filling environment). Before and after the cable repair work, the on-site staff also needs to adopt a number of construction processes that are necessary for external environmental factors (such as environmental cleanliness, environmental temperature, humidity, etc.) to cope with related work. The scope of work for repair work is forced to expand. .
  • the technical problem to be solved by the technical solution is to provide a universal GIS equipment ultra-high voltage cable fault point search test signal input terminal, which combines the operation status of the ultra-high voltage power grid equipment, which is convenient for finding the fault point of the ultra-high voltage cable, and is beneficial to Protecting the internal components of GIS equipment, it can adapt to various specifications and types of GIS equipment, can meet various performance indicators related to electricity and mechanics, realize the unification of versatility and specificity, and solve the isolation seal of signal input terminal and The high-voltage insulation problem can fully meet the practical work requirements of the suitability and applicability of the signal input terminal.
  • the specific configuration of the technical solution is: providing a general-purpose GIS equipment ultra-high voltage cable fault point search test signal input terminal, comprising a cable terminal hand hole of the GIS device and an external cable conductor located in the GIS device casing, at the cable terminal A screw hole for fastening the detachable cover sealing plate is disposed around the hand hole; and the utility model is characterized in that: on the hand hole of the cable terminal, an input terminal hand hole sealing plate, an input terminal insulating sealing plate base are sequentially disposed, The input terminal insulation sealing plate and the input terminal conductor penetrating through the input terminal insulation sealing plate; the first end hole is disposed in a middle portion of the input terminal hand hole sealing plate, and the second through hole is disposed in a middle portion of the input terminal insulating sealing plate base Providing an elastic connecting electrical conductor between the end of the input terminal conductor extending through the second, first through hole into the cable terminal hand hole and the external cable conductor located in the GIS device housing; the input terminal a hand hole sealing plate is fixedly
  • the input terminal hand hole sealing plate matches the shape/size of the detachable cover sealing plate.
  • the second through hole of the input terminal insulating sealing plate base is matched with the shape/size of the first through hole of the input terminal hand hole sealing plate; the outer diameter or outer dimension of the input terminal insulating sealing plate base is larger than the input terminal hand The outer diameter or outer dimension of the first through hole of the hole sealing plate.
  • One end of the elastic connecting electrical conductor is fixed to the input terminal conductor, and the other end is connected to the external cable conductor via a fastener; at least one of the elastic connecting electrical conductors is a spiral/spring shape with an insulating layer Wire.
  • the input terminal conductor is fixedly disposed on the input terminal insulating cover body.
  • the first and second sealing structures are a sealing groove and a sealing strip structure.
  • the fastener is a bolt/screw.
  • the input terminal insulation sealing plate base and the input terminal insulating sealing plate are connected by a fastener.
  • Sealed board insulation sealing board base Insulation sealing board input terminal conductor sub-module structure form, on the one hand, as long as the size of the sealing board can be changed to adapt to various specifications / models of GIS equipment, on the other hand, can meet GIS equipment In the working environment under the condition of filling and insulating gas, it can not only find the fault point of the ultra-high voltage cable, but also protect the internal components of the GIS equipment, and can also adapt to the invention purpose of various specifications and types of GIS equipment;
  • Sub-module structure form which can meet various performance indexes related to electricity and mechanics, realize the unification of versatility and speciality, and solve the problem of isolation sealing and high-voltage insulation of signal input terminals;
  • FIG. 1 is a schematic structural view of a hand hole of a cable terminal of a conventional GIS device
  • Figure 2 is a schematic view of the structure of the present invention.
  • FIG. 3 is a schematic diagram of the refinement structure of the input terminal of the present invention.
  • 1 is the GIS equipment shell
  • 2 is the GIS main loop conductor
  • 3 is the external cable conductor
  • 4 is the GISA external cable terminal
  • 5 is the GIS cable terminal hand hole
  • 6 is the detachable cover sealing board
  • 7 is the input terminal hand Hole sealing plate
  • 8 is the input terminal insulation sealing plate base
  • 9 is the input terminal insulation sealing plate
  • 10 is the input terminal conductor
  • 11 is the elastic connecting conductor
  • 12 is the connecting bolt
  • 13 and 14 are the sealing rings
  • 15 and 16 are tight
  • the fixing bolts 17 are the first through holes
  • the 18 is the second through holes.
  • a cable end hand hole 5 with a detachable cover plate 6 is provided on the GIS device housing 1, the external cable conductor 3 of the GIS external cable terminal 4 At the junction with the GIS main return conductor 2, a cable end hand hole 5 with a detachable cover plate 6 is provided.
  • the cable terminal hand hole at the external cable terminal of the GIS device (referred to as GIS cable terminal hand hole in the industry) is used as the penetration hole of the search/experiment signal cable.
  • the field staff needs to open the cover plate of the GIS cable terminal hand hole.
  • the internal components of the GIS that are extremely sensitive to the environment are exposed to the external environment. Only when the cover plate of the cable terminal hand hole is opened and quickly covered in the shortest possible time, the leakage of the insulating gas inside the GIS can be reduced, and the GIS can be reduced. The time during which internal components are exposed to the outside of the normal atmospheric environment.
  • the on-site staff Before and after the cable repair work, the on-site staff also needs to adopt a number of construction processes that take the external environmental factors (such as environmental cleanliness, environmental temperature, humidity, etc.) as necessary conditions to cooperate with the relevant work.
  • external environmental factors such as environmental cleanliness, environmental temperature, humidity, etc.
  • the search/experimental signal cable needs to be connected to the external cable conductor located in the GIS device housing for a relatively long time, resulting in a relatively long time connection.
  • the internal components of the GIS will be exposed to the external normal atmospheric environment for a long time, and various construction techniques that are necessary for external environmental factors are imposed, which has led to an increase in the scope of work for repair work. Repairing the working hours/workloads reduces the effective working hours of the equipment and the online commissioning rate of the equipment.
  • the utility model comprises a cable terminal hand hole 5 of a GIS device and an external cable conductor 3 located inside the GIS device casing.
  • a detachable cover plate 6 is provided for fastening.
  • the screw hole; the specific technical solution is that, on the cable terminal hand hole, the input terminal hand hole sealing plate 7, the input terminal insulating sealing plate base 8, the input terminal insulating sealing plate 9 and the through input terminal insulating cover are sequentially disposed.
  • the input terminal conductor 10 of the board between one end of the input terminal conductor extending into the hand hole of the cable terminal and the external cable conductor 3 located inside the casing of the GIS device, an elastic connecting electrical conductor 11 is disposed; the hand terminal sealing plate of the input terminal is The fastener is fixedly connected to the cable terminal hand hole.
  • the entire test signal input terminal can be divided into two parts: a universal module and a dedicated module.
  • the versatility module separately from the specificity module; for issues involving versatility, such as high voltage Problems such as flanges, internal conductor connections, etc., are designed by means of a universal module; these components are: General purpose signal input conductors together with insulating sealing plates, universal internal connecting conductors.
  • specificity such as isolation seals, internal component protection, the method of making a dedicated module, and finally combining the universal module with the dedicated module, can solve the problem of applicability and applicability.
  • the material requirements of the signal input conductor and the insulating sealing board also need to meet the electrical and mechanical properties.
  • the sealing plate can adapt to various GIS devices of different specifications/models, on the other hand, it can meet the working environment requirements of GIS equipment under the condition of filling and insulating gas, and achieves the convenience of ultra high pressure.
  • the fault point finding of the cable is beneficial to protect the internal components of the GIS equipment, and can also be adapted to the invention purposes of various specifications and types of GIS equipment.
  • the utility model at least comprises an input terminal hand hole sealing plate 7, an input terminal insulating sealing plate base 8, an input terminal insulating sealing plate 9 and an input terminal conductor 10 penetrating the input terminal insulating sealing plate; a first through hole 17 is disposed in a middle portion of the plate, and a second through hole 18 is disposed in a middle portion of the input terminal insulating cover base; the input terminal conductor 10 extends through the second and first through holes into the cable terminal hand hole One end is connected with an external cable conductor 3 (shown in FIG. 2, the same below) located inside the GIS device housing, and an elastic connecting electrical conductor 12 is disposed; the input terminal hand hole sealing plate is fixed by the fastener 16 and the cable terminal hand hole.
  • the first and second sealing structures 13 and 14 are disposed between the cable terminal hand hole and the input terminal hand hole sealing plate and between the input terminal insulating sealing plate base and the input terminal insulating sealing plate.
  • the input terminal hand hole sealing plate 7 matches the shape/size of the detachable cover sealing plate 6 (shown in Fig. 1).
  • the second through hole of the input terminal insulating sealing plate base matches the shape/size of the first through hole of the input terminal hand hole sealing plate.
  • the outer diameter or outer dimension of the input terminal insulating sealing plate base is larger than the outer diameter or outer dimension of the first through hole of the input terminal hand hole sealing plate.
  • One end of the elastic connecting electrical conductor is fixed to the input terminal conductor, and the other end is connected to the external cable conductor via a fastener (screw or bolt).
  • At least one of the elastically connected electrical conductors is a helical/spring-like conductor with an insulating layer.
  • the input terminal conductor is fixedly disposed on the input terminal insulating cover body.
  • the first and second sealing structures are a sealing groove-seal structure. Further, the above fasteners are bolts/bolts.
  • the input terminal insulation sealing plate base and the input terminal insulating sealing plate are connected by fasteners.
  • the input terminal hand hole sealing plate 7 and the input terminal insulating sealing plate base 8 are fixedly connected.
  • the input terminal can withstand a DC withstand voltage of 30kV;
  • the input terminal can meet the test current of no more than 100A;
  • the input terminal is capable of withstanding an internal gas pressure of 0.72 MPa.
  • connection between the internal conductors of the GIS equipment is first completed (as shown in Figure 2, referring to the connection between the GIS main loop conductor 2 and the external cable conductor 3) And the operation process such as sulfur hexafluoride gas management, disconnecting the GIS conductor from the cable conductor.
  • the elastic connecting conductor 11 and the external cable conductor 3 the electrical connection between the input terminal connecting conductor 10 and the external cable conductor 3 is realized, and the hand terminal sealing plate of the input terminal is used to cover the GIS cable terminal hand hole.
  • the cable terminal gas chamber is then subjected to sulphur hexafluoride gas management to ensure that the internal components of the GIS are consistent with the normal operating environment.
  • the technical solution can be actually divided into two sealing surfaces: a sealing plate connected to the input terminal hand hole and an input terminal insulating sealing plate fixed to the input terminal conductor.
  • the device adopts two The double sealing structure of the sealing ring is made of a middle hand hole sealing plate for transition; the connecting wire of the input terminal is connected by a spring wire and a screw to meet the needs of different types of GIS equipment.
  • the utility model can be widely used in the field of testing/maintenance of various GIS equipment ultra-high voltage cables.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

L'invention concerne un terminal d'entrée de signal d'essai pour la recherche du point de défaillance d'un câble à très haute tension sur un équipement GIS de type universel, comprenant un trou d'accès de borne de câble (5) de l'équipement GIS et un conducteur de câble extérieur (3) à l'intérieur d'une coque d'équipement GIS (1). Le trou d'accès de borne de câble (5) possède une plaque de fermeture de trou d'accès (7), une base de plaque de scellement isolée (8), une plaque de scellement isolée (9) et un conducteur de borne d'entrée (10). Un premier trou traversant (17) est placé sur la plaque de fermeture de trou d'accès (7) et un second trou traversant (18) est placé sur la base de plaque de scellement isolée (8). Une section de conducteur électrique élastique (11) est disposée entre l'extrémité du trou d'accès de borne de câble (5) du côté du conducteur de câble extérieur (3), traverse le second et le premier trou traversant (18, 17) pour s'étendre dans le trou d'accès de borne de câble (5). Une première et une seconde structure de scellement (13, 14) sont disposées entre le trou d'accès de borne de câble (5) et la plaque de scellement de trou d'accès (7) et entre la base de plaque de scellement isolée (8) et la plaque de scellement isolée (9). Le terminal d'entrée résout le problème en termes de scellement isolé et d'isolation haute tension et peut être appliqué dans le domaine des essais et de la maintenance de différents câbles à très haute tension d'équipements GIS.
PCT/CN2011/073745 2010-08-23 2011-05-06 Terminal d'entrée de signal d'essai pour la recherche du point de défaillance d'un câble à très haute tension sur un équipement gis de type universel Ceased WO2012024942A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010205020615U CN201765253U (zh) 2010-08-23 2010-08-23 通用型gis设备超高压电缆故障点查找试验信号输入终端
CN201020502061.5 2010-08-23

Publications (1)

Publication Number Publication Date
WO2012024942A1 true WO2012024942A1 (fr) 2012-03-01

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Application Number Title Priority Date Filing Date
PCT/CN2011/073745 Ceased WO2012024942A1 (fr) 2010-08-23 2011-05-06 Terminal d'entrée de signal d'essai pour la recherche du point de défaillance d'un câble à très haute tension sur un équipement gis de type universel

Country Status (2)

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CN (1) CN201765253U (fr)
WO (1) WO2012024942A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201765253U (zh) * 2010-08-23 2011-03-16 上海市电力公司超高压输变电公司 通用型gis设备超高压电缆故障点查找试验信号输入终端

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001305179A (ja) * 2000-04-27 2001-10-31 Mitsubishi Electric Corp 閃絡点検出装置及びこの閃絡点検出装置を用いたガス絶縁電気装置の耐電圧試験方法
FR2926370A1 (fr) * 2008-04-25 2009-07-17 Areva T & D Sa Dispositif et procede de detection d'arc interne par mesure combinee de pression et de lumiere.
CN101726694A (zh) * 2008-10-13 2010-06-09 株式会社晓星 气体绝缘设备的部分放电检测装置
CN101782603A (zh) * 2010-03-08 2010-07-21 华北电力大学 一种平板型vfto测量传感器
CN201765253U (zh) * 2010-08-23 2011-03-16 上海市电力公司超高压输变电公司 通用型gis设备超高压电缆故障点查找试验信号输入终端

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001305179A (ja) * 2000-04-27 2001-10-31 Mitsubishi Electric Corp 閃絡点検出装置及びこの閃絡点検出装置を用いたガス絶縁電気装置の耐電圧試験方法
FR2926370A1 (fr) * 2008-04-25 2009-07-17 Areva T & D Sa Dispositif et procede de detection d'arc interne par mesure combinee de pression et de lumiere.
CN101726694A (zh) * 2008-10-13 2010-06-09 株式会社晓星 气体绝缘设备的部分放电检测装置
CN101782603A (zh) * 2010-03-08 2010-07-21 华北电力大学 一种平板型vfto测量传感器
CN201765253U (zh) * 2010-08-23 2011-03-16 上海市电力公司超高压输变电公司 通用型gis设备超高压电缆故障点查找试验信号输入终端

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