WO2009079919A1 - High voltage power cable terminal - Google Patents

High voltage power cable terminal Download PDF

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Publication number
WO2009079919A1
WO2009079919A1 PCT/CN2008/001951 CN2008001951W WO2009079919A1 WO 2009079919 A1 WO2009079919 A1 WO 2009079919A1 CN 2008001951 W CN2008001951 W CN 2008001951W WO 2009079919 A1 WO2009079919 A1 WO 2009079919A1
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WO
WIPO (PCT)
Prior art keywords
cable
conductor
terminal
high voltage
voltage power
Prior art date
Application number
PCT/CN2008/001951
Other languages
French (fr)
Chinese (zh)
Inventor
Feng Yang
Chengxian Zhang
Dongming Zhang
Hao ZHAO
Jin Cao
Zhongqiang Lin
Original Assignee
Shanghai Bandweaver Communication Technologies Co., Ltd.
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
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Application filed by Shanghai Bandweaver Communication Technologies Co., Ltd. filed Critical Shanghai Bandweaver Communication Technologies Co., Ltd.
Publication of WO2009079919A1 publication Critical patent/WO2009079919A1/en

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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
    • H02G15/02—Cable terminations
    • H02G15/06—Cable terminating boxes, frames or other structures

Definitions

  • the present invention relates to a high voltage/ultra high voltage power cable accessory, and more particularly to a high voltage power cable terminal having a conductor built-in cable.
  • the terminal comprises a conductor terminal, a high voltage end, a ground end and an insulation unit, the insulation unit is disposed between the high voltage end and the ground end, and the conductor terminal is disposed at the high voltage end.
  • the power department conducts online monitoring.
  • the main contents of online monitoring include load monitoring and fault monitoring.
  • the constraints on the load capacity of the cable are primarily due to the operating temperature limits allowed by the cable and cable accessory manufacturing materials.
  • the temperature of the cable conductor that is, the temperature of the XLPE adjacent to the conductor, is usually not specified to exceed 85 degrees.
  • the load capacity is designed primarily in accordance with the conductor temperature limits.
  • the load capacity of cable systems is usually designed in accordance with IEC60287 and IEC853 standards. These standards assume that the load current is constant or varies substantially according to a daily load curve pattern and assumes that ambient environmental conditions are determined.
  • the environmental conditions around the actual running cable system are complex, and the state may migrate, which is very uncertain. Therefore, the temperature of the entire cable is not detected.
  • the highest point of the entire cable temperature cannot be reliably determined.
  • the highest point of cable temperature is the actual load bottle point.
  • a more complicated situation is that the location of the load bottleneck point on the same cable changes, and multiple bottlenecks may occur on the same cable over a period of time.
  • DTS Distributed Optical Temperature Sensor
  • the optical cable containing the temperature measuring fiber is arranged on the surface of the cable;
  • the temperature measuring fiber or fiber optic cable is added to a layer or a layer outside the cable insulation layer, typically outside the semiconductor insulation shield and in the metal sleeve.
  • Korean Patent Publication No. 2003-45864 discloses a system for setting a temperature measuring fiber in a cable for calculating the temperature of a substation power cable conductor.
  • the cable in the cable tunnel and the direct buried cable in front of the earthfill the cable can be fixed to the cable surface by manual binding or bonding.
  • the cable laid by the pipe the cable is usually pulled into the pipe after the cable is piped. At this time, the cable is less likely to be in close contact with the cable surface as in the above case, some of the cable may be in contact with the surface of the cable, and some may not be in contact with the cable and suspended in the medium in the tube. This will introduce the model into uncertain factors, resulting in large computational errors.
  • Japanese Patent Publication Nos. 1990-144810, 1994-148001, 1994-181013, 1994-181014 and 1994-181015 disclose various optical fiber composite electric cables. They all arrange the cable between the cable insulation and the jacket, which is built-in.
  • the fiber optic cable is very consistently located in a layer outside the cable insulation, which solves the above-mentioned external type problem, but must deal with the fiber connection problem at the cable joint, which complicates the cable connector installation process. .
  • a jumper cable is used, and two splice points are respectively welded to the fiber taps of the two cables.
  • the number of splices on the thermocouple fiber is at least twice the number of cable splices.
  • the number of fiber splices may be too large.
  • the fiber fusion splice has a certain loss and unreliability, which has a negative impact on DTS temperature measurement.
  • Another significant disadvantage of the built-in type is that tension may be experienced during cable manufacturing, coiling, transport, installation and operation due to the location of the fiber.
  • the mechanical strength of the fiber is very low and cannot be repaired once it is damaged. Therefore, high requirements are placed on the design, manufacture and construction of optical fiber protection.
  • fault types include both overheating due to poor connections of the cable conductors or the poor connection of the terminals, as well as insulation faults caused by defects or defective points introduced by the cable intermediate joints and cable terminations during the design, manufacturing and installation phases.
  • the detecting fiber is located outside the cable insulation of the ground potential, and the geometrical dimension of the insulating portion is greater than the insulation of the cable body. In more cases, the optical fiber even has to be arranged with a larger geometric size.
  • the cable metal shield or cable connector is waterproof outside the sleeve.
  • the position at which the fiber is detected is less weak and lagging than the case of the cable body.
  • the mathematical model for calculating the conductor temperature established for the cable body is not applicable, and the temperature abnormality of the cable is not easily detected.
  • the partial discharge signal generated by its internal insulation fault is also attenuated by the thicker insulation and other sheaths, and is not easily detected by the probe fiber.
  • the optical fiber refers to a bare optical fiber mainly composed of quartz or a bare optical fiber having a coating layer which cannot be pulled and easily broken;
  • the optical cable includes an optical fiber and a protective structure of tensile and/or radial pressure buffering.
  • the cable has a plastic or metal sheath or sheath.
  • high voltage refers to an AC or DC voltage of 35 kV and above, including rolling, ultrahigh pressure, and extra high pressure.
  • FIG. 6 is a schematic diagram of the terminal structure of a conventional high voltage power cable.
  • This terminal is used in cable transformers or overhead lines.
  • This terminal mainly includes a conductor stud 20, an insulating unit 21, and a shield 22.
  • the terminal 20 is made of copper and is used to connect and secure the high voltage cable center conductor 19.
  • the insulation unit is used to prevent electric field from collecting and preventing external contamination from entering.
  • the shield is rounded to prevent the possibility of high voltage causing corona.
  • the optical fiber or the optical cable is placed outside the cable insulation layer.
  • the optical cable is first taken out from the cable, and then the electrical part and the optical part are respectively connected.
  • the present invention is to overcome the above deficiencies of the prior art, and the technical problem to be solved by the present invention is to provide a high voltage power cable terminal and a mounting method thereof.
  • the terminal can complete terminal processing and fiber extraction of the cable.
  • the extracted fiber can be brought to ground potential or continually connected to another fiber at high voltage potential.
  • the technical solution of the present invention is a high voltage power cable terminal comprising a conductor terminal, a high voltage end, a ground end and an insulation unit, the insulation unit being disposed between the high voltage end and the ground end, the conductor wiring A post is disposed at the high voltage end, and the conductor post has at least one cable channel starting from a top of a conductor cavity of the conductor post and terminating at an outer surface of the conductor post.
  • the cable channel is an opening from the top of the conductor cavity in the conductor post to the side of the conductor post.
  • the cable channel is a vertical hole from the top of the conductor cavity of the conductor post to the outer surface of the conductor post.
  • the ground end has a cable through hole communicating with the outside and the inside of the insulating unit.
  • the insulating unit is internally filled with insulating oil.
  • the insulating unit has at least one auxiliary cable channel extending from the high voltage end to the ground end.
  • the high voltage end has a cable connector box.
  • the high voltage power cable terminal of the present invention can simultaneously realize the terminal processing of the cable and solve the problem of the extraction and continuation of the optical fiber in the cable conductor.
  • the terminal of the present invention takes full advantage of the dielectric capabilities of optical fibers and the advantages of distributed sensing technology.
  • FIG. 1 is a schematic view of a first embodiment of a cable termination terminal of the present invention.
  • FIG. 2 is a schematic view of a second embodiment of a cable termination terminal of the present invention.
  • FIG. 3 is a schematic view showing a second embodiment of a cable terminal terminal of the present invention.
  • FIG. 4 is a schematic diagram of a first embodiment of a terminal according to the present invention.
  • FIG. 5 is a schematic diagram of a second embodiment of a terminal according to the present invention.
  • Figure 6 is a schematic illustration of a conventional terminal of the prior art of the present invention. detailed description
  • the cable terminal provided by the invention has the components of the conductor terminal, the insulation unit, the stress relief, the shield connection and the like necessary for the conventional high-voltage cable terminal, and particularly comprises at least one high-voltage end, at least one ground end, at least one insulating unit and at least one wiring. column.
  • the insulating unit is disposed between the high voltage end and the ground end.
  • the terminal is placed at the high voltage end for connecting cable conductors and overhead conductors, busbars, switches or other conductors. Under working conditions, the high voltage terminal is at a high voltage potential and the ground terminal is at ground potential. It is characterized in that the terminal has at least one cable channel. This channel is used for the threading of the probe cable within the cable conductor from the top of the terminal housing and the chamber holding the cable conductor to the outer surface of the terminal. .
  • the chamber of the cable conductor is located at a lower portion of the terminal, a hole starting from the top surface of the chamber of the conductor, extending vertically upward for a distance, and one opening at the side of the terminal post
  • the slots meet.
  • the communicating holes and slots form the cable channel described above.
  • the terminal is of a profiled configuration such that the cable channel is a straight hole that is easy to machine.
  • the cable channel provides a function of drawing a cable that would otherwise be hidden inside the conductor to the outside of the conductor and the terminal.
  • Another object of the present invention is to provide a method of mounting the above cable terminal.
  • the cable of the cable termination has a fiber optic cable inside the conductor. At the end of the cable, the cable ends can be made and a suitable length of cable can be taken.
  • the terminal of the cable terminal is sleeved at the end of the cable conductor, the outgoing cable is passed through the cable channel of the terminal and led out of the cable conductor and the terminal.
  • the light drawn from the cable conductor is connected to an insulating cable having a dielectric strength that satisfies the operating conditions, which can be bridged from a high voltage potential to a ground potential by means of a separate insulating unit, or directly utilized.
  • Insulation components of the cable termination such as high voltage insulation components with optical fibers, accomplish this.
  • a solution for accomplishing high voltage bridging using insulating components of an outdoor terminal is provided.
  • the insulating member has two passages from the high pressure end to the ground end. One of them is a cable channel that houses the finished cable end and the other is a cable channel for a dielectric strength that meets the operating conditions. Insulated cable routing.
  • the cable channel may be located on one side of the cable channel parallel to the cable ramp or in a spiral arrangement outside the cable channel.
  • the cable channel can be secured with sufficient dielectric strength by filling the media and/or extending the length of the cable channel. If the length of the cable channel is greater than the creepage distance of the insulation component design and the moisture and contaminants are not invaded, air can act as a medium in the cable channel.
  • the cable channel can be prefabricated in the manufacture of the insulating component.
  • the insulated cable is not prefabricated in the insulating member, it is penetrated during the installation phase of the cable termination. The advantage of this is that as long as the insulated cable meets the dielectric strength and size requirements, the cable termination can be fitted with different configurations of insulated cables and is serviceable.
  • an insulated optical cable and a cable end having a dielectric strength that meets the requirements of the operating conditions are used to pass through a cable passage within the insulating member, the cable passage having a dielectric fill therein.
  • the insulated optical cable is connected at the high voltage end of the cable termination to the above-mentioned optical cable leading from the cable conductor.
  • the insulated cable can be connected to other optical cables at the end of the ground potential, or connected to the optical path device, or access to the detecting device.
  • the terminal is a Gas insulated switchgear (GIS) or transformer terminal that is placed in a container filled with fluid medium.
  • GIS Gas insulated switchgear
  • the cable led out by the conductor stud of the terminal may be connected to an insulating optical cable immersed in the medium having a dielectric strength satisfying the working condition, the latter being led out to the outside of the container, or to another container
  • the other cable terminal conductor posts in the cable lead out the cable.
  • the insulated optical cable that reaches the ground potential can be connected to other optical cables, or to optical equipment, or to access testing equipment.
  • the cable termination is connected to an overhead conductor with a fiber optic cable.
  • the cable in the overhead conductor can be separated directly from the conductor and connected to the cable from the cable termination conductor post.
  • connection of the above-mentioned optical cable usually requires the protection of the cable connector and/or the disk by means of a cable connector box provided at the high voltage end of the cable terminal.
  • the terminal 1 is a schematic view of a first embodiment of a cable termination terminal of the present invention.
  • the terminal 1 can provide connection and fixing of the cable of the conductor built-in cable.
  • the terminal 1 has a cable channel 2.
  • the cable channel 2 is an opening from the conductor chamber 23 in the terminal to the side of the terminal.
  • the optical cable 3 is first taken out from the cable conductor 4 and passed through the cable channel 2 in the terminal 1, and then the cable conductor 4 is inserted into the conductor chamber 23 in the terminal 1 and fixed by crimping pliers.
  • the cable channel 2 is connected to the side of the conductor post conductor chamber 23 to the side of the conductor post 1, so that the in-conductor cable can be connected to an external insulated cable.
  • the bobbin 5 is of an unconventional form, and can provide connection and fixing of a cable with a built-in optical cable, and a cable passage 6 therein.
  • the cable passage 6 is a vertical hole from the cable conductor chamber to the outer surface of the conductor post 5, which The cable channel of the structure is relatively easy to process.
  • FIG 3 is a schematic view of a third embodiment of a cable termination terminal of the present invention.
  • the terminal 24 has a cable channel 25 therein.
  • the cable channel 25 is a vertical hole from the cable conductor chamber to the top surface of the conductor terminal.
  • the cable channel of this structure is relatively easy to process.
  • FIG. 4 is a schematic diagram of a first embodiment of a terminal according to the present invention.
  • the high-voltage power cable terminal in the embodiment includes a conductor terminal 7, a high-voltage terminal 13, a ground terminal 14, a shield cover 15, an insulation unit 16, and a cable joint box 11, and the insulation unit is disposed at the high-voltage end 13 Between the ground terminal 14, the conductor terminal 7 is disposed at the high voltage end 13, and the conductor terminal 7 has a cable channel starting from the conductor of the conductor terminal 7 for receiving and fixing the cable conductor.
  • the top of the body chamber terminates at the outer surface of the conductor stud 7.
  • the shield 15 is a smooth metal casing that acts to prevent high voltage corona.
  • the cable connector box 11 in the shield 15 functions as a cable connector protection and a disk. This cable termination is used to connect the high potential cable 9 in the cable conductor and the other insulated cable 10.
  • the high-potential optical cable 9 in the conductor is passed through the cable channel 8 in the terminal 7 to the shield cover 15, and the conductor is inserted into the inner chamber of the terminal block and is pressed by the crimping pliers.
  • the insulating unit has an auxiliary cable channel 12 inside, and the insulated optical cable is used. 10 penetrates the auxiliary cable channel 12 and is connected to the high-potential cable 9 through the cable splice closure 11 in the shield 15.
  • the fiber optic cable 10 can be connected to a probe cable control center or to other low potential fiber optic cables.
  • FIG. 5 is a schematic diagram of a second embodiment of a terminal according to the present invention. This embodiment differs from the embodiment described in Fig. 4 in that the interior of the terminal is an oil immersing terminal, and the optical cable 10 can pass directly through the internal insulating oil of the terminal and pass through the cable through hole 18 at the ground end.
  • the through hole 18 has a sealing means.
  • the method for installing the high-voltage power cable terminal of the conductor built-in optical cable of the present invention comprises the following steps: Step 1: Pull out the high-potential cable in the center conductor of the cable, and pass out the cable channel in the conductor post, and insert the conductor into the conductor a conductor chamber of the terminal and crimping the conductor post to the cable center conductor using a crimping tool;
  • step two the drawn optical cable and an insulating optical cable passing through the through hole of the optical cable are continued.
  • Another method for installing a high-voltage power cable terminal characterized in that the method comprises the following steps - step one, extracting a high-potential cable in a cable center conductor, and passing out a cable channel in the track conductor post, Inserting the conductor into the conductor cavity of the conductor post and pressing the conductor post to the cable center conductor with a crimping plier; In step two, the outgoing optical cable and an insulating optical cable passing through the auxiliary optical cable channel are continued.
  • Step 1 extracting a high-potential cable in a cable center conductor and passing out a cable channel in the track conductor post, Inserting the conductor into the conductor cavity of the conductor post and pressing the conductor post to the cable center conductor with a crimping plier;
  • step two the outgoing optical cable and the optical cable in the overhead line or other cable termination are continued.
  • the terminal of the invention can be used as an outdoor terminal, a GIS terminal or a transformer terminal. Terminal processing and fiber extraction of the cable can be done. The extracted fiber can be brought to ground potential or connected to another fiber at high voltage potential.

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  • Cable Accessories (AREA)

Abstract

A high voltage power cable terminal includes a conductor binding post (7), a high voltage end (13), a ground end (14), and an insulation unit (16). The insulation unit is provided between the high voltage end and the ground end. The conductor binding post is provided on the high voltage end. The conductor binding post has an optical fiber channel (8). The optical fiber channel begins at the top part of the conductor chamber of the conductor binding post and ends with the outside surface of the conductor binding post.

Description

高压电力电缆终端  High voltage power cable terminal
技术领域 Technical field
本发明涉及高压 /超高压电力电缆附件， 特别是一种导体内置光缆的高压电 力电缆终端。 该终端包括了导体接线柱、 高压端、 地端及绝缘单元， 绝缘单元被设 置在所述高压端和地端之间， 导体接线柱设置在高压端。 背景技术  The present invention relates to a high voltage/ultra high voltage power cable accessory, and more particularly to a high voltage power cable terminal having a conductor built-in cable. The terminal comprises a conductor terminal, a high voltage end, a ground end and an insulation unit, the insulation unit is disposed between the high voltage end and the ground end, and the conductor terminal is disposed at the high voltage end. Background technique
为保证高压地下电缆***的安全运行， 电力部门对其进行在线监测。 在线监测 的主要内容包括负荷监测和故障监测两个方面。  In order to ensure the safe operation of the high-voltage underground cable system, the power department conducts online monitoring. The main contents of online monitoring include load monitoring and fault monitoring.
电缆的负荷能力的约束条件主要来自电缆和电缆附件制造材料允许的工作温度 极限。 例如， 对于 XLPE电缆， 电缆导体的温度， 也就是临近导体的 XLPE的温度， 通常规定不可超过 85度。在电缆和电缆***设计时， 就是主要按照导体温度限制来 完成负荷能力设计的。电缆***的负荷能力通常按照 IEC60287和 IEC853标准设计。 这些标准假设负荷电流是恒定的或基本按照一个日负荷曲线样式变化， 并假设周围 环境条件是确定的。 为保证设计安全， 所假设的条件往往取极端情况， 导致电缆系 统实际运行负载低、 资产利用不足的可能。 事实上， 由于电缆的电气相互影响和传 热学问题的复杂性， 上述标准不可能为比较复杂的敷设环境中 （特别是多回路） 的 电缆提供可靠和精确的解。对电缆温度进行在线检测， 提供一个解决该问题的途径， 导体温度是非常重要的， 可直接作为负荷监测的关键指标。  The constraints on the load capacity of the cable are primarily due to the operating temperature limits allowed by the cable and cable accessory manufacturing materials. For example, for XLPE cables, the temperature of the cable conductor, that is, the temperature of the XLPE adjacent to the conductor, is usually not specified to exceed 85 degrees. In the design of cable and cable systems, the load capacity is designed primarily in accordance with the conductor temperature limits. The load capacity of cable systems is usually designed in accordance with IEC60287 and IEC853 standards. These standards assume that the load current is constant or varies substantially according to a daily load curve pattern and assumes that ambient environmental conditions are determined. In order to ensure the safety of the design, the assumed conditions are often extreme, which leads to the low actual operating load of the cable system and the possibility of underutilization of assets. In fact, due to the electrical interaction of the cables and the complexity of the thermal transfer problems, the above criteria cannot provide a reliable and accurate solution for cables in more complex installation environments, especially multi-circuit. On-line detection of cable temperature provides a way to solve this problem. Conductor temperature is very important and can be directly used as a key indicator of load monitoring.
实际运行电缆***的周围的环境条件是复杂的， 而且其状态有可能会发生迁移， 很不确定， 因此不检测电缆全长的温度 布无法可靠地判断出整个电缆温度的最高 点。 电缆温度最高点是事实上的负荷瓶 ^点。 更复杂的情况是， 在同一根电缆上的 负荷瓶颈点的位置是变化的， 而且在一个时间段内， 同一根电缆可能出现多个瓶颈 点。  The environmental conditions around the actual running cable system are complex, and the state may migrate, which is very uncertain. Therefore, the temperature of the entire cable is not detected. The highest point of the entire cable temperature cannot be reliably determined. The highest point of cable temperature is the actual load bottle point. A more complicated situation is that the location of the load bottleneck point on the same cable changes, and multiple bottlenecks may occur on the same cable over a period of time.
分布式光纤温度传感 （Distributed Temperature Sensor ， 以下简称 DTS) 技 术为电缆在线负荷监测提供了有保障的解决方案。 利用 DTS技术， 可以检测到一根 长达几千米到几十千米光纤的温度分布， 采样点距离可达到 1到 2米。 将该测温光 纤沿电缆轴向布置， 则可以获得电缆的轴向温度分布。 到目前为止， 通常认为， 由于高压电缆的导体处手高压电势， 由完整性不容破 坏的绝缘层包裹， 无法将光纤布置在导体上或内部并引出到处于地电势的外部。 所. 以利用 DTS技术直接测量导体温度是不可行的。 目前通常的做法有两种： Distributed Optical Temperature Sensor (DTS) technology provides a secure solution for cable online load monitoring. With DTS technology, a temperature distribution of several kilometers to several tens of kilometers of fiber can be detected, and the sampling point distance can reach 1 to 2 meters. By arranging the temperature measuring fiber along the axial direction of the cable, the axial temperature distribution of the cable can be obtained. Up to now, it has been generally considered that, due to the high voltage potential of the conductor of the high voltage cable, it is wrapped by an insulating layer that is incapable of being damaged, and it is impossible to arrange the optical fiber on or in the conductor and to be external to the ground potential. It is not feasible to directly measure the conductor temperature using DTS technology. There are currently two common practices:
1、 外置式： 将容纳测温光纤的光缆布置在电缆表面；  1. External type: The optical cable containing the temperature measuring fiber is arranged on the surface of the cable;
2、 内置式： 在电缆制造阶段， 将测温光纤或光缆加入到电缆绝缘层外的某层或 某两层之间， 典型地在半导体绝缘屏蔽外、 金属套内。  2. Built-in type: In the cable manufacturing stage, the temperature measuring fiber or fiber optic cable is added to a layer or a layer outside the cable insulation layer, typically outside the semiconductor insulation shield and in the metal sleeve.
这时， 测量的温度虽然不是电缆导体的温度， 但仍然具有重要的参考价值。 并且， 以测温光纤为外边界， 对电缆建立传热偏微分方程模型， 持续输入实时负荷电流和 实时光纤温度， 可计算出电缆导体温度。韩国专利公开号 2003-45864揭示了一种在 电缆中设置一温度测量光纤用于计算地下电力电缆导体温度的***。 At this time, although the measured temperature is not the temperature of the cable conductor, it still has important reference value. Moreover, with the temperature-measuring fiber as the outer boundary, a heat transfer partial differential equation model is established for the cable, and the real-time load current and the real-time fiber temperature are continuously input, and the cable conductor temperature can be calculated. Korean Patent Publication No. 2003-45864 discloses a system for setting a temperature measuring fiber in a cable for calculating the temperature of a substation power cable conductor.
关于外置式:， 对于电缆隧道中的电缆和在回填土方前的直埋电缆， 可以由人工 采用绑扎或粘合的方法将光缆固定在电缆表面。 但对于排管方式敷设的电缆， 光缆 通常在电缆穿管完毕后再牵引入排管中。 这时， 光缆不太可能像上述的情况中紧密 地接触电缆表面， 部分光缆可能接触了电 '缆表面， 部分则可能没有接触到电缆而悬 空在排管中的介质中。 这将使模型引入不确定的因素， 导致较大的计算误差。  Regarding the external type: For the cable in the cable tunnel and the direct buried cable in front of the earthfill, the cable can be fixed to the cable surface by manual binding or bonding. However, for the cable laid by the pipe, the cable is usually pulled into the pipe after the cable is piped. At this time, the cable is less likely to be in close contact with the cable surface as in the above case, some of the cable may be in contact with the surface of the cable, and some may not be in contact with the cable and suspended in the medium in the tube. This will introduce the model into uncertain factors, resulting in large computational errors.
关于内置式： 中国专利公开号 CN1624812A, 日本专利公开号 1990-144810、 1994-148001、 1994-181013、 1994-181014和 1994-181015揭示了多种光纤复合电 力电缆。 它们都将光缆布置在电缆绝缘层和护套之间， 属于内置式。 在内置式光纤 复合电力电缆中， 光缆非常一致地处于电缆绝缘外的某一层， 解决了上述外置式的 问题， 但必须处理电缆接头处光纤的连接问题， 这使电缆接头安装过程变得复杂。 通常要釆用一根跳线光缆， 两个熔接点， 分别和两根电缆的光纤抽头熔接。 也就是 说， 为了监测一根电缆的温度分布， 测温光纤上的熔接点的数量至少是电缆接头数 量的两倍。 对于较长的电缆， 光纤熔接点的数量可能太多。 光纤熔接点有一定的损 耗和不可靠性， 对 DTS测温造成负面影响。 内置式的另一个显著的缺点是， 由于光 纤所处的位置， 在电缆制造， 盘卷， 运输， 安装和运行阶段有可能受到张力。 而光 纤的机械强度很低， 一旦损坏又无法维修。 因此对光纤的保护设计、 制造和施工都 提出了较高的要求。  Regarding the built-in type: Chinese Patent Publication No. CN1624812A, Japanese Patent Publication Nos. 1990-144810, 1994-148001, 1994-181013, 1994-181014 and 1994-181015 disclose various optical fiber composite electric cables. They all arrange the cable between the cable insulation and the jacket, which is built-in. In the built-in fiber-optic composite power cable, the fiber optic cable is very consistently located in a layer outside the cable insulation, which solves the above-mentioned external type problem, but must deal with the fiber connection problem at the cable joint, which complicates the cable connector installation process. . Usually, a jumper cable is used, and two splice points are respectively welded to the fiber taps of the two cables. That is, to monitor the temperature distribution of a cable, the number of splices on the thermocouple fiber is at least twice the number of cable splices. For longer cables, the number of fiber splices may be too large. The fiber fusion splice has a certain loss and unreliability, which has a negative impact on DTS temperature measurement. Another significant disadvantage of the built-in type is that tension may be experienced during cable manufacturing, coiling, transport, installation and operation due to the location of the fiber. The mechanical strength of the fiber is very low and cannot be repaired once it is damaged. Therefore, high requirements are placed on the design, manufacture and construction of optical fiber protection.
除了受外力破坏外， 电缆及其附件的制造质量缺陷、 安装质量缺陷和绝缘老化 都会引发电缆故障。 这些故障在导致电缆最终破坏前， 通常有一个绝缘劣化而产生 周部放电的过程。 对局部放电的检测是故障监测的一个重要手段。 光纤传感技术可 以用于局部放电的检测。 如通过干涉的方法， 可以检测到电缆局部放电产生的超声 波和其他异常的机械振动。 这需要沿电缆长度方向上布置探测光缆， 同样存在上述 问题。 并且， 由于超声波的传播具有方向性并且迅速衰减， 发生在同一截面上的相 同强度的局部放电， 布置在偏心一侧的探测光纤可能因为局部放电位置所处的角度 不同而给出不同的检测量， 甚至可能检测不到。 In addition to damage from external forces, manufacturing defects in cables and their accessories, mounting quality defects, and insulation aging can cause cable failure. These faults usually have a process in which the insulation is degraded to cause a peripheral discharge before the cable is finally destroyed. The detection of partial discharge is an important means of fault monitoring. Optical fiber sensing technology For the detection of partial discharge. Ultrasonic waves and other abnormal mechanical vibrations generated by partial discharge of the cable can be detected by interference. This requires the placement of the probe cable along the length of the cable, as well as the above problems. Moreover, since the propagation of the ultrasonic waves is directional and rapidly decays, partial discharges of the same intensity occur on the same cross section, and the detection fibers disposed on the eccentric side may give different detection amounts due to different angles of the partial discharge positions. , may not even detect it.
另外， 统计表明， 电缆中间接头和电缆终端在电缆***投入运行的前几年， 其 故障率远远大于电缆本体的故障率。 故障类型既包括由于电缆导体的连接件或接线 柱的不良连接导致过热， 也包括电缆中间接头和电缆终端由于设计、 制造和安装阶 段引入的缺陷或不良点导致的绝缘故障。 而在上述的光缆布置方案中， 探测光纤位 于地电势的电缆绝缘外部， 而该部绝缘的几何尺寸都大于电缆本体的绝缘， 在更多 的情况， 光纤甚至不得不布置在具有更大几何尺寸的电缆金属屏蔽或电缆接头防水 套外。 这时， 探测光纤所在的位置对导 发热的温度响应和电缆本体的情况相比， 既弱又滞后。 为电缆本体而建立的计算导体温度的数学模型就不适用， 电缆的温度 异常也不容易被探测到。 同样地， 其内部绝缘故障所产生的局部放电信号因为要穿 透较厚的绝缘和其他护层， 也衰减得较为严重， 不易被探测光纤所检测到。  In addition, statistics show that the cable joints and cable terminations have a failure rate far greater than the failure rate of the cable body in the years before the cable system was put into operation. Fault types include both overheating due to poor connections of the cable conductors or the poor connection of the terminals, as well as insulation faults caused by defects or defective points introduced by the cable intermediate joints and cable terminations during the design, manufacturing and installation phases. In the above cable arrangement, the detecting fiber is located outside the cable insulation of the ground potential, and the geometrical dimension of the insulating portion is greater than the insulation of the cable body. In more cases, the optical fiber even has to be arranged with a larger geometric size. The cable metal shield or cable connector is waterproof outside the sleeve. At this time, the position at which the fiber is detected is less weak and lagging than the case of the cable body. The mathematical model for calculating the conductor temperature established for the cable body is not applicable, and the temperature abnormality of the cable is not easily detected. Similarly, the partial discharge signal generated by its internal insulation fault is also attenuated by the thicker insulation and other sheaths, and is not easily detected by the probe fiber.
在本发明中， 光纤指主要由石英构成的裸光纤或具有涂覆层的裸光纤， 其不能 承拉， 容易折断； 光缆包括光纤和承拉和 /或径向压力缓冲的保护结构。 典型地， 光 缆具有塑料或金属护套或护层。  In the present invention, the optical fiber refers to a bare optical fiber mainly composed of quartz or a bare optical fiber having a coating layer which cannot be pulled and easily broken; the optical cable includes an optical fiber and a protective structure of tensile and/or radial pressure buffering. Typically, the cable has a plastic or metal sheath or sheath.
在本发明中， 高压指 35kV和以上的交流或直流电压， 包括髙压、 超高压和特高 压。  In the present invention, high voltage refers to an AC or DC voltage of 35 kV and above, including rolling, ultrahigh pressure, and extra high pressure.
图 6为常规高压电力电缆的终端结构示意图。 此终端被用在电缆变压器或者架 空线连接。 此终端主要包括了导体接线柱 20、 绝缘单元 21和屏蔽罩 22。 接线柱 20 由铜制作， 用于连接和固定高压电缆中心导体 19。 绝缘单元用于防止电场聚集和防 止外部污染进入。 屏蔽罩为圆滑外形， 防止高压造成电暈的可能性。  Figure 6 is a schematic diagram of the terminal structure of a conventional high voltage power cable. This terminal is used in cable transformers or overhead lines. This terminal mainly includes a conductor stud 20, an insulating unit 21, and a shield 22. The terminal 20 is made of copper and is used to connect and secure the high voltage cable center conductor 19. The insulation unit is used to prevent electric field from collecting and preventing external contamination from entering. The shield is rounded to prevent the possibility of high voltage causing corona.
常规光纤复合电力电缆中光纤或者光缆都是放在电缆绝缘层的外部， 在电缆终 端制作时， 首先将光缆从电缆中引出， 然后分别对电气部分和光学部分进行连接。  In the conventional fiber-optic composite power cable, the optical fiber or the optical cable is placed outside the cable insulation layer. When the cable terminal is fabricated, the optical cable is first taken out from the cable, and then the electrical part and the optical part are respectively connected.
为了解决已有技术的不足， 需要一种电缆中心导体内部带有探测光纤的高压电 力电缆和与之配套的电缆附件， 从而光纤可以直接检测到电缆的导体温度， 并可以 有效地检测到电缆局放的超声波信号。 而目前的终端无法解决导体内光纤的引出的 问题。 发明内容 In order to solve the deficiencies of the prior art, a high-voltage power cable with a detecting fiber inside the cable center conductor and a cable accessory matched thereto are needed, so that the fiber can directly detect the conductor temperature of the cable, and can effectively detect the cable station. The ultrasonic signal is discharged. However, the current terminal cannot solve the problem of the extraction of the optical fiber in the conductor. Summary of the invention
本发明为克服上述已有技术的不足， 本发明要解决的技术问题是提供 一种高压电力电缆终端及其安装方法。 该终端可以完成该电缆的终端处理和光纤引 出。 引出的光纤可以引到地电势， 或和另一个处于高压电势的光纤续接。  The present invention is to overcome the above deficiencies of the prior art, and the technical problem to be solved by the present invention is to provide a high voltage power cable terminal and a mounting method thereof. The terminal can complete terminal processing and fiber extraction of the cable. The extracted fiber can be brought to ground potential or continually connected to another fiber at high voltage potential.
本发明的技术方案是- 一种高压电力电缆终端， 包括了导体接线柱、 高压端、 地端及绝缘单元， 所述 绝缘单元被设置在所述高压端和地端之间， 所述导体接线柱设置在所述高压端， 所 述的导体接线柱具有至少一个光缆通道， 该光缆通道起始于所述导体接线柱的导体 腔室的顶部， 终止于所述导体接线柱的外表面。  The technical solution of the present invention is a high voltage power cable terminal comprising a conductor terminal, a high voltage end, a ground end and an insulation unit, the insulation unit being disposed between the high voltage end and the ground end, the conductor wiring A post is disposed at the high voltage end, and the conductor post has at least one cable channel starting from a top of a conductor cavity of the conductor post and terminating at an outer surface of the conductor post.
所述的光缆通道为从所述的导体接线柱中的导体腔室顶部到该导体接线柱侧面 的开孔。  The cable channel is an opening from the top of the conductor cavity in the conductor post to the side of the conductor post.
所述的光缆通道为从所述的导体接线柱的导体腔室顶部到该导体接线柱外表面 的竖直孔。  The cable channel is a vertical hole from the top of the conductor cavity of the conductor post to the outer surface of the conductor post.
所述的地端具有一个连通外部和绝缘单元内部的光缆通孔。  The ground end has a cable through hole communicating with the outside and the inside of the insulating unit.
所述的绝缘单元内部填充有绝缘油。  The insulating unit is internally filled with insulating oil.
所述绝缘单元内具有至少一个从高压端延伸至地端的辅助光缆通道。  The insulating unit has at least one auxiliary cable channel extending from the high voltage end to the ground end.
所述的高压端具有光缆接头盒。  The high voltage end has a cable connector box.
与现有技术相比， 本发明的有益效果是：  Compared with the prior art, the beneficial effects of the present invention are:
本发明的高压电力电缆终端可以同时实现电缆的终端处理和解决电缆导体内光 纤的引出和续接的问题。 本发明的终端充分利用了光纤的介电能力和分布式传感技 术的优势。 附图说明  The high voltage power cable terminal of the present invention can simultaneously realize the terminal processing of the cable and solve the problem of the extraction and continuation of the optical fiber in the cable conductor. The terminal of the present invention takes full advantage of the dielectric capabilities of optical fibers and the advantages of distributed sensing technology. DRAWINGS
图 1为本发明的电缆终端接线柱的第一实施例示意图。  1 is a schematic view of a first embodiment of a cable termination terminal of the present invention.
图 2为本发明的电缆终端接线柱的第二实施例示意图。  2 is a schematic view of a second embodiment of a cable termination terminal of the present invention.
图 3为本发明的电缆终端接线柱的第 ^实施例示意图  3 is a schematic view showing a second embodiment of a cable terminal terminal of the present invention;
图 4为本发明终端第一实施例示意图。  FIG. 4 is a schematic diagram of a first embodiment of a terminal according to the present invention.
图 5为本发明终端第二实施例示意图。  FIG. 5 is a schematic diagram of a second embodiment of a terminal according to the present invention.
图 6是本发明已有技术常规终端的示意图。 具体实施方式 Figure 6 is a schematic illustration of a conventional terminal of the prior art of the present invention. detailed description
下面结合附图和实施例对本发明的具 ：实施方式做进一步详细的说明， 但不应 以此限制本发明的保护范围。  The embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments, but the scope of the present invention should not be limited thereto.
本发明提供的电缆终端， 具有常规高压电缆终端所必要的导体接线柱、 绝缘单 元、 应力消除、 屏蔽连接等部件， 特别包括至少一个高压端， 至少一个地端， 至少 一个绝缘单元和至少一个接线柱。 其中绝缘单元被设置在高压端和接地端之间。 该 接线柱被设置在高压端， 用于连接电缆导体和架空导线、 母线、 开关或其他导体。 在工作条件下， 高压端处于高压电势， 接地端处于地电势。 其特征为该接线柱具有 至少一个光缆通道。 该通道用于电缆导体内的探测光缆的穿线， 它从接线柱的容纳 和固定电缆导体的腔室的顶部出发， 到达接线柱的外表面。 .  The cable terminal provided by the invention has the components of the conductor terminal, the insulation unit, the stress relief, the shield connection and the like necessary for the conventional high-voltage cable terminal, and particularly comprises at least one high-voltage end, at least one ground end, at least one insulating unit and at least one wiring. column. The insulating unit is disposed between the high voltage end and the ground end. The terminal is placed at the high voltage end for connecting cable conductors and overhead conductors, busbars, switches or other conductors. Under working conditions, the high voltage terminal is at a high voltage potential and the ground terminal is at ground potential. It is characterized in that the terminal has at least one cable channel. This channel is used for the threading of the probe cable within the cable conductor from the top of the terminal housing and the chamber holding the cable conductor to the outer surface of the terminal. .
在本发明的一个优选的实施例中， 电缆导体的腔室位于接线柱的下部， 一个孔 从该导体的腔室的顶面出发， 竖直向上延伸一段距离后， 和一个在接线柱侧面开的 槽会合。 所述连通的孔和槽形成了上述光缆通道。 在本发明的另一个优选的实施例 中， 接线柱采用了异型结构， 令所述光缆通道为一个易于加工的直孔。 在这些实施 例中， 所述光缆通道提供了这样一种功能， 将本来藏在导体内部的光缆引出到导体 和接线柱的外部。  In a preferred embodiment of the invention, the chamber of the cable conductor is located at a lower portion of the terminal, a hole starting from the top surface of the chamber of the conductor, extending vertically upward for a distance, and one opening at the side of the terminal post The slots meet. The communicating holes and slots form the cable channel described above. In another preferred embodiment of the invention, the terminal is of a profiled configuration such that the cable channel is a straight hole that is easy to machine. In these embodiments, the cable channel provides a function of drawing a cable that would otherwise be hidden inside the conductor to the outside of the conductor and the terminal.
本发明的另一个目的是提供了上述电缆终端的安装方法。 该电缆终端的电缆的 导体内具有光缆。 可以在电缆端部， 制作电缆端头， 并引出一段合适长度的光缆。 将电缆终端的接线柱套接在电缆导体端头时，使引出的光缆穿过接线柱的光缆通道， 引出至电缆导体和接线柱外。  Another object of the present invention is to provide a method of mounting the above cable terminal. The cable of the cable termination has a fiber optic cable inside the conductor. At the end of the cable, the cable ends can be made and a suitable length of cable can be taken. When the terminal of the cable terminal is sleeved at the end of the cable conductor, the outgoing cable is passed through the cable channel of the terminal and led out of the cable conductor and the terminal.
引出到导体外部的光缆的去向通常有三种情况： （1 ) 和一个跨越该终端高压端 和地端的光纤续接， （2) 和在同一个充满介质的容器内另一个电缆终端引出的光缆 续接或引出至该容器处于地电势的外部， （3) 和电缆终端所连的具有光纤的架空导 线中的光纤续接。  There are usually three cases in which the cable leading out of the conductor goes: (1) Continuation with a fiber that crosses the high-voltage and ground ends of the terminal, (2) and a cable that is led out by another cable terminal in the same container filled with the medium. Connected or taken out to the outside of the container at ground potential, (3) Continuing with the fiber in the overhead conductor with the fiber connected to the cable termination.
在第一种情况， 电缆导体中引出的光 ί和一个具有满足工作条件的介电强度的 绝缘光缆连接，后者可以借助一个单独的绝缘单元完成从高压电势向地电势的桥接， 或直接利用该电缆终端的绝缘部件， 如具有光纤的高压绝缘部件， 来实现该目的。 在本发明的实施例中， 提供了利用户外终端的绝缘部件完成高压桥接的方案。 在其 中一个实施例中， 绝缘部件具有两个从高压端到地端的通道。其中一个为电缆通道， 容纳已处理好的电缆尾端， 另一个为光缆通道， 供一个满足工作条件的介电强度的 绝缘光缆走线。 该光缆通道可以位于电缆通道的一侧和电缆逋道平行， 或以螺旋形 设置在电缆通道外。可以通过填充介质和 /或延长光缆通道长度的方法保证光缆通道 具有足够的介电强度。 如果光缆通道的长度大于该绝缘部件设计的爬距， 并且能保 证水份和污染物不被侵入， 空气可以作为光缆通道内的介质。 光缆通道可以在制造 绝缘部件时， 预制在其中。 绝缘光缆不被预制在所述绝缘部件中， 它是在电缆终端 的安装阶段才被穿入。这样做的优点是： 只要绝缘光缆满足介电强度和尺寸的要求， 电缆终端可以适配不同结构的绝缘光缆并具有可维修性。 在另外一个实施例中， 使 用一个具有满足工作条件要求的介电强度的绝缘光缆和电缆的尾端共同穿过该绝缘 部件内的电缆通道， 该电缆通道内部有介质填充。 绝缘光缆在电缆终端的高压端和 上述从电缆导体引出的光缆连接。 该绝缘光缆在地电势的端头可和其他光缆续接， 或接入光路设备， 或接入检测设备。 In the first case, the light drawn from the cable conductor is connected to an insulating cable having a dielectric strength that satisfies the operating conditions, which can be bridged from a high voltage potential to a ground potential by means of a separate insulating unit, or directly utilized. Insulation components of the cable termination, such as high voltage insulation components with optical fibers, accomplish this. In an embodiment of the invention, a solution for accomplishing high voltage bridging using insulating components of an outdoor terminal is provided. In one of the embodiments, the insulating member has two passages from the high pressure end to the ground end. One of them is a cable channel that houses the finished cable end and the other is a cable channel for a dielectric strength that meets the operating conditions. Insulated cable routing. The cable channel may be located on one side of the cable channel parallel to the cable ramp or in a spiral arrangement outside the cable channel. The cable channel can be secured with sufficient dielectric strength by filling the media and/or extending the length of the cable channel. If the length of the cable channel is greater than the creepage distance of the insulation component design and the moisture and contaminants are not invaded, air can act as a medium in the cable channel. The cable channel can be prefabricated in the manufacture of the insulating component. The insulated cable is not prefabricated in the insulating member, it is penetrated during the installation phase of the cable termination. The advantage of this is that as long as the insulated cable meets the dielectric strength and size requirements, the cable termination can be fitted with different configurations of insulated cables and is serviceable. In another embodiment, an insulated optical cable and a cable end having a dielectric strength that meets the requirements of the operating conditions are used to pass through a cable passage within the insulating member, the cable passage having a dielectric fill therein. The insulated optical cable is connected at the high voltage end of the cable termination to the above-mentioned optical cable leading from the cable conductor. The insulated cable can be connected to other optical cables at the end of the ground potential, or connected to the optical path device, or access to the detecting device.
在第二种情况中， 该终端是一个气体绝缘开关终端终端 （Gas insulated switchgear, 简称 GIS) 或变压器终端， 被设置在一个充满流体介质的容器内。 该 终端的导体接线柱引出的光缆可以和一个浸泡在该介质中的具有满足工作条件的介 电强度的绝缘光缆连接， 后者可以引出到该容器处于地电势的外部， 或和另一个该 容器内的其他电缆终端导体接线柱引出^光缆续接。 到达地电势的绝缘光缆可和其 他光缆续接， 或接入光路设备， 或接入检测设备。  In the second case, the terminal is a Gas insulated switchgear (GIS) or transformer terminal that is placed in a container filled with fluid medium. The cable led out by the conductor stud of the terminal may be connected to an insulating optical cable immersed in the medium having a dielectric strength satisfying the working condition, the latter being led out to the outside of the container, or to another container The other cable terminal conductor posts in the cable lead out the cable. The insulated optical cable that reaches the ground potential can be connected to other optical cables, or to optical equipment, or to access testing equipment.
在第三种情况中， 电缆终端和一个具有光缆的架空导线连接。 架空导线中的光 缆可以直接从导线中分离出来， 和电缆终端导体接线柱引出的光缆连接。  In the third case, the cable termination is connected to an overhead conductor with a fiber optic cable. The cable in the overhead conductor can be separated directly from the conductor and connected to the cable from the cable termination conductor post.
上述光缆的 接通常需要借助一个设置在该电缆终端高压端的光缆接头盒来保 护光缆接头和 /或盘纤。  The connection of the above-mentioned optical cable usually requires the protection of the cable connector and/or the disk by means of a cable connector box provided at the high voltage end of the cable terminal.
下面结合附图详细说明。  The details will be described below with reference to the drawings.
图 1为本发明的电缆终端接线柱的第一实施例示意图。 接线柱 1可以提供导体 内置光缆的电缆的连接与固定。 接线柱 1具有光缆通道 2。 光缆通道 2为从接线柱 中导体腔室 23到接线柱侧面的开孔。在安装终端时， 首先将光缆 3从电缆导体 4中 引出一段并穿过接线柱 1中的光缆通道 2， 然后将电缆导体 4***接线柱 1中的导 体腔室 23并利用压接钳进行固定。此具体实施例中， 光缆通道 2为连接导体接线柱 导体腔室 23顶部到导体接线柱 1的侧面，从而导体内光缆可以与外部绝缘光缆进行 连接。 图 2为本发明的电缆终端接线柱的第二实施例示意图。 揆线柱 5为非常规形式， 可以提供导体内置光缆的电缆的连接与固定， 其内有光缆通道 6， 光缆通道 6为从 电缆导体腔室到导体接线柱 5外表面的竖直孔，这种结构的光缆通道比较容易加工。 1 is a schematic view of a first embodiment of a cable termination terminal of the present invention. The terminal 1 can provide connection and fixing of the cable of the conductor built-in cable. The terminal 1 has a cable channel 2. The cable channel 2 is an opening from the conductor chamber 23 in the terminal to the side of the terminal. When installing the terminal, the optical cable 3 is first taken out from the cable conductor 4 and passed through the cable channel 2 in the terminal 1, and then the cable conductor 4 is inserted into the conductor chamber 23 in the terminal 1 and fixed by crimping pliers. . In this embodiment, the cable channel 2 is connected to the side of the conductor post conductor chamber 23 to the side of the conductor post 1, so that the in-conductor cable can be connected to an external insulated cable. 2 is a schematic view of a second embodiment of a cable termination terminal of the present invention. The bobbin 5 is of an unconventional form, and can provide connection and fixing of a cable with a built-in optical cable, and a cable passage 6 therein. The cable passage 6 is a vertical hole from the cable conductor chamber to the outer surface of the conductor post 5, which The cable channel of the structure is relatively easy to process.
图 3为本发明的电缆终端接线柱的第三实施例示意图。 接线柱 24内有光缆通道 25， 光缆通道 25为从电缆导体腔室到导体接线柱顶面的竖直孔， 这种结构的光缆通 道比较容易加工。  3 is a schematic view of a third embodiment of a cable termination terminal of the present invention. The terminal 24 has a cable channel 25 therein. The cable channel 25 is a vertical hole from the cable conductor chamber to the top surface of the conductor terminal. The cable channel of this structure is relatively easy to process.
图 4 为本发明终端第一实施例示意图。 本实施例中地高压电力电缆终端， 包括 了导体接线柱 7、 高压端 13、 地端 14、 屏蔽罩 15、 绝缘单元 16及光缆接头盒 11， 所述绝缘单元被设置在所述高压端 13和地端 14之间， 所述导体接线柱 7设置在所 述高压端 13， 导体接线柱 7具有一个光缆通道， 该光缆通道起始于所述导体接线柱 7的容纳和固定电缆导体的导体腔室的顶部， 终止于所述导体接线柱 7的外表面。 屏蔽罩 15为光滑金属外壳， 起到防止高压电晕的作用。 屏蔽罩 15内的光缆接头盒 11起到光缆接头保护及盘纤的作用。 此电缆终端用来连接电缆导体内高电位光缆 9 及另一根绝缘的光缆 10。 首先将导体中高电位光缆 9穿过接线柱 7内光缆通道 8至 屏蔽罩 15内， 将导体***接线柱内腔室弃利用压接钳压紧， 绝缘单元内部有辅助光 缆通道 12， 将绝缘光缆 10穿入辅助光缆通道 12并与高电位光缆 9通过屏蔽罩 15 内的光缆接头盒 11进行连接。 光缆 10可以接入到探测光缆控制中心或者与其他低 电位的光缆进行连接。  FIG. 4 is a schematic diagram of a first embodiment of a terminal according to the present invention. The high-voltage power cable terminal in the embodiment includes a conductor terminal 7, a high-voltage terminal 13, a ground terminal 14, a shield cover 15, an insulation unit 16, and a cable joint box 11, and the insulation unit is disposed at the high-voltage end 13 Between the ground terminal 14, the conductor terminal 7 is disposed at the high voltage end 13, and the conductor terminal 7 has a cable channel starting from the conductor of the conductor terminal 7 for receiving and fixing the cable conductor. The top of the body chamber terminates at the outer surface of the conductor stud 7. The shield 15 is a smooth metal casing that acts to prevent high voltage corona. The cable connector box 11 in the shield 15 functions as a cable connector protection and a disk. This cable termination is used to connect the high potential cable 9 in the cable conductor and the other insulated cable 10. First, the high-potential optical cable 9 in the conductor is passed through the cable channel 8 in the terminal 7 to the shield cover 15, and the conductor is inserted into the inner chamber of the terminal block and is pressed by the crimping pliers. The insulating unit has an auxiliary cable channel 12 inside, and the insulated optical cable is used. 10 penetrates the auxiliary cable channel 12 and is connected to the high-potential cable 9 through the cable splice closure 11 in the shield 15. The fiber optic cable 10 can be connected to a probe cable control center or to other low potential fiber optic cables.
图 5为本发明终端第二实施例示意图。 此实施例与图 4中所述的实施例区别在 于此终端内部为一油浸终端，光缆 10可以直接从终端的内部绝缘油中穿过并通过位 于地端的光缆通孔 18穿出。 通孔 18有密封装置。  FIG. 5 is a schematic diagram of a second embodiment of a terminal according to the present invention. This embodiment differs from the embodiment described in Fig. 4 in that the interior of the terminal is an oil immersing terminal, and the optical cable 10 can pass directly through the internal insulating oil of the terminal and pass through the cable through hole 18 at the ground end. The through hole 18 has a sealing means.
本发明导体内置光缆的高压电力电缆终端的安装方法， 包括以下步骤： 步骤一， 将电缆中心导体中的高电位光缆引出， 并穿出所述道导体接线柱内的 光缆通道， 将导体***导体接线柱的导体腔室并利用压接钳将导体接线柱与电缆中 心导体压紧；  The method for installing the high-voltage power cable terminal of the conductor built-in optical cable of the present invention comprises the following steps: Step 1: Pull out the high-potential cable in the center conductor of the cable, and pass out the cable channel in the conductor post, and insert the conductor into the conductor a conductor chamber of the terminal and crimping the conductor post to the cable center conductor using a crimping tool;
步骤二， 将该引出的光缆和一根穿过所述的光缆通孔的绝缘光缆续接。  In step two, the drawn optical cable and an insulating optical cable passing through the through hole of the optical cable are continued.
另一种高压电力电缆终端的安装方法， 其特征在于， 该方法包括以下歩骤 - 步骤一， 将电缆中心导体中的高电位光缆引出， 并穿出所述道导体接线柱内的 光缆通道， 将导体***导体接线柱的导体腔室并利用压接钳将导体接线柱与电缆中 心导体压紧； 步骤二， 将该引出的光缆和一根穿过所述的辅助光缆通道的绝缘光缆续接。 另一种高压电力电缆终端的安装方法， 其特征在于， 该方法包括以下歩骤： 步骤一， 将电缆中心导体中的高电位光缆引出， 并穿出所述道导体接线柱内的 光缆通道， 将导体***导体接线柱的导体腔室并利用压接钳将导体接线柱与电缆中 心导体压紧； Another method for installing a high-voltage power cable terminal, characterized in that the method comprises the following steps - step one, extracting a high-potential cable in a cable center conductor, and passing out a cable channel in the track conductor post, Inserting the conductor into the conductor cavity of the conductor post and pressing the conductor post to the cable center conductor with a crimping plier; In step two, the outgoing optical cable and an insulating optical cable passing through the auxiliary optical cable channel are continued. Another method for installing a high-voltage power cable terminal, the method comprising the following steps: Step 1: extracting a high-potential cable in a cable center conductor and passing out a cable channel in the track conductor post, Inserting the conductor into the conductor cavity of the conductor post and pressing the conductor post to the cable center conductor with a crimping plier;
步骤二， 将该引出的光缆和架空线或其它电缆终端中的光缆进行续接。 本发明终端可以做为户外终端、 GIS终端或变压器终端。可以完成该电缆的终端 处理和光纤引出。 引出的光纤可以引到地电势， 或和另一个处于高压电势的光纤接 续。  In step two, the outgoing optical cable and the optical cable in the overhead line or other cable termination are continued. The terminal of the invention can be used as an outdoor terminal, a GIS terminal or a transformer terminal. Terminal processing and fiber extraction of the cable can be done. The extracted fiber can be brought to ground potential or connected to another fiber at high voltage potential.
以上所述仅为本发明的较佳实施例而已，并非用来限定本发明的实施范围。即凡依 本发明申请专利范围的内容所作的等效变化与修饰， 都应为本发明的技术范畴。  The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, the equivalent changes and modifications made by the content of the patent application scope of the present invention should be the technical scope of the present invention.
δ δ

Claims

权 利 要 求 Rights request
1、 一种高压电力电缆终端， 包括了导体接线柱、 高压端、 地 及绝缘单元， 所述绝 缘单元被设置在所述高压端和地端之间， f述导体接线柱设置在所述高压端， 其特征在于： A high-voltage power cable terminal comprising a conductor terminal, a high-voltage terminal, a ground, and an insulation unit, wherein the insulation unit is disposed between the high-voltage end and the ground end, and f is a conductor connection post disposed at the high voltage End, which is characterized by:
所述的导体接线柱具有光缆通道， 该光缆通道起始于所述导体接线柱的导体腔 室的顶部、 终止于所述导体接线柱的外表面。  The conductor stud has a cable channel that begins at the top of the conductor cavity of the conductor stud and terminates at an outer surface of the conductor stud.
2、根据权利要求 1所述的高压电力电缆终端，其特征在于所述的光缆通道为从所述 的导体接线柱中的导体腔室顶部到该导体接线柱侧面的开孔。  2. A high voltage power cable termination according to claim 1 wherein said cable channel is an opening from the top of the conductor cavity in said conductor terminal to the side of the conductor terminal.
3、根据权利要求 1所述的高压电力电缆终端，其特征在于所述的光缆通道为从所述 的导体接线柱的导体腔室顶部到该导体接线柱外表面的竖直孔。  3. A high voltage power cable termination according to claim 1 wherein said cable channel is a vertical aperture from the top of the conductor cavity of said conductor post to the outer surface of the conductor post.
4、根据权利要求 1所述的高压电力电缆终端， 其特征在于所述的地端具有一个连通 外部和绝缘单元内部的光缆通孔。  A high voltage power cable terminal according to claim 1, wherein said ground end has a fiber optic cable through hole communicating with the exterior and the inside of the insulating unit.
5、根据权利要求 4所述的高压电力电缆终端，其特征在于该绝缘单元内部填充有绝 缘油。  A high voltage power cable terminal according to claim 4, wherein the insulating unit is internally filled with an insulating oil.
6、根据权利要求 1所述的高压电力电缆终端，其特征在于所述绝缘单元内具有至少 一个从高压端延伸至地端的辅助光缆通道。  The high voltage power cable terminal according to claim 1, wherein said insulating unit has at least one auxiliary cable passage extending from the high voltage end to the ground end.
7、根据权利要求 1所述的高压电力电缆终端，其特征在于所述的高压端具有光缆接 7. The high voltage power cable terminal of claim 1 wherein said high voltage end has an optical cable connection
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