WO2016206349A1 - 一种电力单杆光缆预留装置的监测设备 - Google Patents

一种电力单杆光缆预留装置的监测设备 Download PDF

Info

Publication number
WO2016206349A1
WO2016206349A1 PCT/CN2016/000295 CN2016000295W WO2016206349A1 WO 2016206349 A1 WO2016206349 A1 WO 2016206349A1 CN 2016000295 W CN2016000295 W CN 2016000295W WO 2016206349 A1 WO2016206349 A1 WO 2016206349A1
Authority
WO
WIPO (PCT)
Prior art keywords
monitoring device
cable
frame
optical cable
grounding
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/CN2016/000295
Other languages
English (en)
French (fr)
Inventor
张悦
魏素芬
祝丹
朱见新
李芳亚
胡兵
赵沛
侯俊
张艳
汤珺
饶思传
张晓华
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.)
Xiaogan Power Supply Co of State Grid Hubei Electric Power Co Ltd
State Grid Corp of China SGCC
Original Assignee
Xiaogan Power Supply Co of State Grid Hubei Electric Power Co Ltd
State Grid Corp of China SGCC
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 Xiaogan Power Supply Co of State Grid Hubei Electric Power Co Ltd, State Grid Corp of China SGCC filed Critical Xiaogan Power Supply Co of State Grid Hubei Electric Power Co Ltd
Publication of WO2016206349A1 publication Critical patent/WO2016206349A1/zh
Priority to ZA2017/03761A priority Critical patent/ZA201703761B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof

Definitions

  • the utility model relates to the technical field of electricity, in particular to a monitoring device for a power single-bar cable reservation device, which is mainly used for monitoring power parameters of an OPGW terminal reservation device of a power system ultra-high voltage substation.
  • the OPGW terminal reservation device of the domestic high-voltage substation of power system often has induced voltage and electric eclipse in operation.
  • the occurrence of induced voltage is related to the transmission current of the transmission line, and the induced voltage will increase sharply when lightning strikes. High, directly there is the problem of OPGW coiled cable discharge and electric erosion.
  • the power parameters (including the induced voltage and the number of lightning strikes) cannot be recorded. It is even more incapable of providing the actual data of the OPGW caused by the on-site induced voltage.
  • the power supply network technical operation management department conducts an analysis of the equipment defect problem, which further leads the operation management department to fail to formulate corresponding technical precautions to ensure the safe operation of the optical cable.
  • the technical problem to be solved by the present invention is to provide a monitoring device for a power single-bar optical cable reserve device, which can monitor the power parameters of the OPGW terminal reservation device of the ultra-high voltage substation of the power system, and It is able to record these data power supply network technology operation management departments to analyze the equipment defect problems, so as to ensure the safe operation of the optical cable.
  • the technical scheme of the utility model is: the monitoring device of the power single-bar cable reservation device, the cross-support plate on the frame and the cross-support plate on the frame are fixed to the electric single pole and the two are connected by the frame.
  • the winding component with the reserved cable fork is fixed on the cross plate of the frame, the cross plate under the frame, and the electric
  • the force composite optical cable is wound from the cable connection box and wound around the winding component, and is fixed to the electric single pole through the hoop and the insulator.
  • the grounding knife is arranged between the cross plate and the cross plate under the frame, and the upper end of the grounding knife gate is connected.
  • the wire is connected to the power composite optical cable from the winding component through the wire clamp, and the guiding cable is wound from the cable connecting box and wound around the winding component to enter the guiding cable protection pipe.
  • the monitoring device is disposed under the frame, and the upper end of the monitoring device is connected. The grounding knife gate and the lower end are grounded.
  • the monitoring device includes a casing, an inductive current indicator, an inductive electric overvoltage counter, and a data remote port.
  • the inductive current indicator is sampled by a current transformer, and the inductive electric overvoltage counter passes another current.
  • the transformer drive counts to improve the reliability of anti-jamming and safe operation.
  • the power system can be monitored.
  • FIG. 1 is a front view of a monitoring device of a power single-bar cable reservation device according to the present invention
  • FIG. 2 is a rear elevational view of the monitoring device of the power single pole cable reserve device of Figure 1;
  • FIG 3 is a schematic view showing the connection of a power single-bar optical cable reserve device and a power composite optical cable according to the present invention.
  • the monitoring device of the power single-bar cable reservation device, the frame cross plate 6 and the lower frame plate 8 are fixed to the electric single pole 1 and pass through the frame support between the two.
  • the inch 7 connection, the winding component with the reserved cable reel 4 is fixed on the frame cross plate 6 and the lower frame cross plate 8 , and the electric composite optical cable 3 is wound from the cable connection box 5 and wound around the winding component through the hoop 2 and
  • the insulator 9 is fixed to the electric single pole, and a grounding knife gate 12 is disposed between the cross plate on the frame and the cross plate under the frame, and the upper end wire 11 of the grounding knife gate passes through the wire clamp 10 and the electric composite optical cable from the winding component.
  • the guiding optical cable 18 is wound from the optical cable connecting box 5 and wound around the winding component into the guiding cable protection tube 19.
  • the monitoring device 14 is disposed under the frame, and the upper end of the monitoring device is connected to the grounding knife gate and the lower end is grounded.
  • the device includes a housing 21, an inductive current indicator 22 (the inductive current indicator ranges from 0 to 60 A), an inductive electrical overvoltage counter 23 (inductive electrical overvoltage counter current greater than 120 A), a data remote transmission port 16, and an inductive current indicator.
  • a current transformer, the inductive electric overvoltage counter is driven to count by another current transformer (the monitoring device uses two current transformers for sensing current and overvoltage function sampling respectively) to improve the reliability of anti-interference and safe operation.
  • the power system can be monitored.
  • the upper end of the monitoring device 14 is provided with an upper end insulating sleeve 24 and an upper end connecting bolt 25, and the lower end of the monitoring device is provided with a lower end insulating sleeve 26 and a lower end connecting bolt 27.
  • the device can be insulated from the outside and other currents can be prevented from interfering with the monitoring.
  • the upper end of the monitoring device through the upper end insulating sleeve and the upper end connecting bolt 13 is connected to the lower end of the grounding knife gate, and the grounding grounding terminal 20 is provided on the lower side of the electric single pole, and the lower end insulating sleeve and the lower end connecting bolt are passed through the lower end.
  • the lower end of the monitoring device is connected to the grounding terminal of the grounding network. This ensures the safety of the monitoring device itself.
  • the data remote transmission cable 15 from the data remote transmission port 16 enters the guide cable sheath.
  • This structure allows the data remote transmission cable to be protected and has a neat appearance.
  • the outer casing is a stainless steel outer casing. This increases the service life of the monitoring equipment and prevents corrosion and rust in the harsh outdoor environment and interferes with the monitoring.
  • the outer casing is secured to the lower cross-frame of the frame by fastening bolts 28. This ensures that the monitoring equipment is installed securely.
  • the online monitoring device realizes real-time monitoring of the magnitude of the induced current and the counting of the induced electrical overvoltage
  • the function transmits the data monitored on site to the power grid monitoring and control center in time, eliminating the need for the substation inspection personnel to regularly inspect the operation of the OPGW cable, reducing the unnecessary professional inspection work and reducing the work of the substation inspection personnel.
  • the quantity reduces the cost of substation inspection.
  • the power grid regulation monitoring center returns the operational data according to the monitoring device of each OPGW optical cable, reasonably arranges the state maintenance work of the substation OPGW cable, and improves the system management of the operation state of the substation operation equipment.
  • the induction current indicator of the monitoring device can reflect the magnitude of the induced voltage of the OPGW cable by the transmission line.
  • the on-site maintenance personnel observes the current value of the indicator and judges whether the transmission line is energized. At this time, the maintenance personnel take corresponding safety measures according to the charging state of the primary equipment to prevent the maintenance personnel from being shocked.
  • the communication maintenance personnel can observe the magnitude of the induced current of the monitoring device, determine whether the transmission line is in the running state, and take necessary technical measures according to the operating state of the transmission line to prevent the optical fiber protection of the transmission line caused by the maintenance of the OPGW cable. Misoperation of the equipment caused a power outage accident.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

一种电力单杆光缆预留装置的监测设备，构架上横托板（6）、构架下横托板（8）均固定到电力单杆（1）上并且通过构架支寸（7）连接，具有预留缆盘叉（4）的缠绕部件固定在构架上横托板（6）、构架下横托板（8），电力复合光缆（3）从光缆接续盒（5）出来缠绕在缠绕部件后通过抱箍（2）和绝缘子（9）固定到电力单杆（1），在构架上横托板（6）、构架下横托板（8）之间设有接地刀闸（12），接地刀闸（12）的上端连线（11）通过线夹（10）与从缠绕部件出来的电力复合光缆（3）连通，引导光缆（18）从光缆接续盒（5）出来缠绕在缠绕部件后进入引导缆护管（19），该监测设备（14）设在构架下横托板（8），该监测设备（14）的上端连接接地刀闸（12）且下端接地，该监测设备（14）包括外壳（21）、感应电流指示计（22）、感应过电压计数器（23）、数据远传端口（16），感应电流指示计（22）是一个电流互感器，感应过电压计数器（23）通过另一个电流互感器驱动计数。

Description

一种电力单杆光缆预留装置的监测设备 技术领域
本实用新型涉及电学的技术领域，尤其涉及一种电力单杆光缆预留装置的监测设备，主要用于监测电力系统超高压变电站OPGW终端预留装置的电力参数。
背景技术
目前，国内电力系统超高压变电站的OPGW终端预留装置在运行中常出现感应电压、电蚀断股问题，感应电压的出现与输电线路传输电流大小有关，同时遇到雷击时感应电压就会陡增高，直接出现OPGW盘绕缆匝间放电而电蚀断股的问题。
当前超高压变电站运行中的OPGW终端预缆装置，其电力参数(包括感应电压和受到雷击的次数)不能记录。更不能提供现场感应电压造成危害OPGW的实质数据，以供电网技术运行管理部门进行设备缺陷问题分析，更进一步地会导致运行管理部门无法拟定对应的技术防范措施保证光缆安全运行。
发明内容
为克服现有技术的缺陷，本实用新型要解决的技术问题是提供了一种电力单杆光缆预留装置的监测设备，其能够监测电力系统超高压变电站OPGW终端预留装置的电力参数，并能够记录这些数据供电网技术运行管理部门进行设备缺陷问题分析，从而保证光缆安全运行。
本实用新型的技术方案是：这种电力单杆光缆预留装置的监测设备，构架上横托板、构架下横托板均固定到电力单杆上并且二者之间通过构架支寸连接，具有预留缆盘叉的缠绕部件固定在构架上横托板、构架下横托板，电 力复合光缆从光缆接续盒出来缠绕在缠绕部件后通过抱箍和绝缘子固定到电力单杆，在构架上横托板、构架下横托板之间设有接地刀闸，接地刀闸的上端连线通过线夹与从缠绕部件出来的电力复合光缆连通，引导光缆从光缆接续盒出来缠绕在缠绕部件后进入引导缆护管，该监测设备设在构架下横托板，该监测设备的上端连接接地刀闸且下端接地，该监测设备包括外壳、感应电流指示计、感应电过压计数器、数据远传端口，感应电流指示计是采用一个电流互感器取样，感应电过压计数器通过另一个电流互感器驱动计数，提高抗干扰安全运行的可靠性。
由于该监测设备的上端连接接地刀闸且下端接地，从而与电力复合光缆连通，由于该监测设备通过感应电流指示计测量电流，通过感应电过压计数器测量受到雷击的次数，所以能够监测电力系统超高压变电站OPGW终端预留装置的电力参数；由于该监测设备通过数据远传端口能够记录这些数据供电网技术运行管理部门进行设备缺陷问题分析，从而保证光缆安全运行。
附图说明
图1是根据本实用新型的电力单杆光缆预留装置的监测设备的主视图；
图2是图1的电力单杆光缆预留装置的监测设备的后视图；
图3是根据本实用新型的电力单杆光缆预留装置与电力复合光缆的连接示意图。
具体实施方式
如图1、3所示，这种电力单杆光缆预留装置的监测设备，构架上横托板6、构架下横托板8均固定到电力单杆1上并且二者之间通过构架支寸7连接，具有预留缆盘叉4的缠绕部件固定在构架上横托板6、构架下横托板8，电力复合光缆3从光缆接续盒5出来缠绕在缠绕部件后通过抱箍2和绝缘子9固定到电力单杆，在构架上横托板、构架下横托板之间设有接地刀闸12，接地刀闸的上端连线11通过线夹10与从缠绕部件出来的电力复合光缆连 通，引导光缆18从光缆接续盒5出来缠绕在缠绕部件后进入引导缆护管19，该监测设备14设在构架下横托板，该监测设备的上端连接接地刀闸且下端接地，该监测设备包括外壳21、感应电流指示计22(感应电流指示计范围在0～60A)、感应电过压计数器23(感应电过压计数器电流大于120A)、数据远传端口16，感应电流指示计是一个电流互感器，感应电过压计数器通过另一个电流互感器驱动计数(监测设备采用两只电流互感器，分别用于感应电流和过压功能采样)，提高抗干扰安全运行的可靠性。
由于该监测设备的上端连接接地刀闸且下端接地，从而与电力复合光缆连通，由于该监测设备通过感应电流指示计测量电流，通过感应电过压计数器测量受到雷击的次数，所以能够监测电力系统超高压变电站OPGW终端预留装置的电力参数；由于该监测设备通过数据远传端口能够记录这些数据供电网技术运行管理部门进行设备缺陷问题分析，从而保证光缆安全运行。
优选地，该监测设备14的上端设有上端绝缘套管24、上端接线螺栓25，该监测设备的下端设有下端绝缘套管26、下端接线螺栓27。采用这种结构，可以保证该设备对外绝缘，也避免其它电流对监测产生干扰。
优选地，经过上端绝缘套管、上端接线螺栓的监测设备上端连线13连接接地刀闸的下端，在电力单杆的下侧设有地网接地端子20，经过下端绝缘套管、下端接线螺栓的监测设备下端连线17连接地网接地端子。这样能够保证监测设备本身的安全。
优选地，从数据远传端口16出来的数据远传线缆15进入引导缆护管。这样的结构使得数据远传线缆受到保护，且外观整洁。
优选地，所述外壳是不锈钢外壳。这样增加监测设备的使用寿命，防止在室外恶劣环境下被腐蚀生锈而对监测产生干扰。
优选地，如图2所示，所述外壳通过紧固螺栓28固定到构架下横托板。这样保证监测设备安装牢靠。
本实用新型的有益效果如下：
(1)在线监测装置实现了实时监测感应电流大小和感应电过电压的计数 功能，把现场监测到的数据及时传到电网调控监视中心，免除了变电站巡检人员定期到现场巡检OPGW光缆运行情况，减少了不必要的专业巡检工作，减轻了变电站巡检人员的工作量，降低了变电站运检成本。
(2)电网调控监视中心依据每条OPGW光缆的监测装置传回到运行数据，合理安排变电站OPGW光缆状态检修工作，提高了对变电站运行设备的运行状态系统管理工作。
(3)监测装置的感应电流指示计可反映OPGW光缆受到输电线路感应电压大小。在变电站检修OGPW光缆或变电站的一次设备时，现场检修人员观察指示计的电流值，判断输电线路是否带电，此时检修人员根据一次设备的带电状态采取对应的安全措施，防止检修人员受到电击。
(4)在变电站检修OPGW光缆时，通信检修人员可观察监测装置指示感应电流大小，判断输电线路是否在运行状态，根据输电线路运行状态采取必要的技术措施，防止检修OPGW光缆引起输电线路光纤保护设备误动导致电网停电事故。
以上所述，仅是本实用新型的较佳实施例，并非对本实用新型作任何形式上的限制，凡是依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属本实用新型技术方案的保护范围。

Claims (6)

  1. 一种电力单杆光缆预留装置的监测设备，构架上横托板(6)、构架下横托板(8)均固定到电力单杆(1)上并且二者之间通过构架支寸(7)连接，具有预留缆盘叉(4)的缠绕部件固定在构架上横托板(6)、构架下横托板(8)，电力复合光缆(3)从光缆接续盒(5)出来缠绕在缠绕部件后通过抱箍(2)和绝缘子(9)固定到电力单杆，在构架上横托板、构架下横托板之间设有接地刀闸(12)，接地刀闸的上端连线(11)通过线夹(10)与从缠绕部件出来的电力复合光缆连通，引导光缆(18)从光缆接续盒(5)出来缠绕在缠绕部件后进入引导缆护管(19)，其特征在于：该监测设备(14)设在构架下横托板，该监测设备的上端连接接地刀闸且下端接地，该监测设备包括外壳(21)、感应电流指示计(22)、感应电过压计数器(23)、数据远传端口(16)，感应电流指示计是一个电流互感器，感应电过压计数器通过另一个电流互感器驱动计数。
  2. 根据权利要求1所述的电力单杆光缆预留装置的监测设备，其特征在于：该监测设备(14)的上端设有上端绝缘套管(24)、上端接线螺栓(25)，该监测设备的下端设有下端绝缘套管(26)、下端接线螺栓(27)。
  3. 根据权利要求2所述的电力单杆光缆预留装置的监测设备，其特征在于：经过上端绝缘套管、上端接线螺栓的监测设备上端连线(13)连接接地刀闸的下端，在电力单杆的下侧设有地网接地端子(20)，经过下端绝缘套管、下端接线螺栓的监测设备下端连线(17)连接地网接地端子。
  4. 根据权利要求1所述的电力单杆光缆预留装置的监测设备，其特征在于：从数据远传端口(16)出来的数据远传线缆(15)进入引导缆护管。
  5. 根据权利要求1所述的电力单杆光缆预留装置的监测设备，其特征在于：所述外壳是不锈钢外壳。
  6. 根据权利要求1所述的电力单杆光缆预留装置的监测设备，其特征在于：所述外壳通过紧固螺栓(28)固定到构架下横托板。
PCT/CN2016/000295 2015-06-26 2016-06-06 一种电力单杆光缆预留装置的监测设备 Ceased WO2016206349A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2017/03761A ZA201703761B (en) 2015-06-26 2017-06-01 Monitoring device for optical cable reserving apparatus of utility pole

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520449489.0 2015-06-26
CN201520449489.0U CN204731299U (zh) 2015-06-26 2015-06-26 一种电力单杆光缆预留装置的监测设备

Publications (1)

Publication Number Publication Date
WO2016206349A1 true WO2016206349A1 (zh) 2016-12-29

Family

ID=54389637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/000295 Ceased WO2016206349A1 (zh) 2015-06-26 2016-06-06 一种电力单杆光缆预留装置的监测设备

Country Status (3)

Country Link
CN (1) CN204731299U (zh)
WO (1) WO2016206349A1 (zh)
ZA (1) ZA201703761B (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112964300A (zh) * 2021-02-09 2021-06-15 国网河北省电力有限公司衡水供电分公司 输电线路分布式光传感监测处置系统及方法
CN113872103A (zh) * 2021-09-23 2021-12-31 国网河北省电力有限公司检修分公司 一种特高压运维工装
CN115575307A (zh) * 2022-11-24 2023-01-06 国网河南省电力公司洛阳供电公司 一种可挂网运行的光缆防冻性测试系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204731299U (zh) * 2015-06-26 2015-10-28 国家电网公司 一种电力单杆光缆预留装置的监测设备
CN107706870B (zh) * 2017-01-20 2020-06-02 国家电网公司 一种变电站单杆双缆opgw余缆安装金具及安装方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006351433A (ja) * 2005-06-17 2006-12-28 Chugoku Electric Power Co Inc:The 送電線路閃絡装置
CN203037747U (zh) * 2012-11-13 2013-07-03 贵州电网公司六盘水供电局 杆塔雷电监测系统
CN203275740U (zh) * 2013-05-20 2013-11-06 国家电网公司 电力单杆光缆预留架
CN103776492A (zh) * 2014-01-27 2014-05-07 国家电网公司 Opgw状态监测系统
CN204731299U (zh) * 2015-06-26 2015-10-28 国家电网公司 一种电力单杆光缆预留装置的监测设备
CN204789800U (zh) * 2015-06-26 2015-11-18 国家电网公司 一种电力钢管杆光缆预留装置的监测设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006351433A (ja) * 2005-06-17 2006-12-28 Chugoku Electric Power Co Inc:The 送電線路閃絡装置
CN203037747U (zh) * 2012-11-13 2013-07-03 贵州电网公司六盘水供电局 杆塔雷电监测系统
CN203275740U (zh) * 2013-05-20 2013-11-06 国家电网公司 电力单杆光缆预留架
CN103776492A (zh) * 2014-01-27 2014-05-07 国家电网公司 Opgw状态监测系统
CN204731299U (zh) * 2015-06-26 2015-10-28 国家电网公司 一种电力单杆光缆预留装置的监测设备
CN204789800U (zh) * 2015-06-26 2015-11-18 国家电网公司 一种电力钢管杆光缆预留装置的监测设备

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112964300A (zh) * 2021-02-09 2021-06-15 国网河北省电力有限公司衡水供电分公司 输电线路分布式光传感监测处置系统及方法
CN113872103A (zh) * 2021-09-23 2021-12-31 国网河北省电力有限公司检修分公司 一种特高压运维工装
CN115575307A (zh) * 2022-11-24 2023-01-06 国网河南省电力公司洛阳供电公司 一种可挂网运行的光缆防冻性测试系统

Also Published As

Publication number Publication date
ZA201703761B (en) 2018-08-29
CN204731299U (zh) 2015-10-28

Similar Documents

Publication Publication Date Title
CN101464488B (zh) 一种高压电缆在线监测系统
WO2016206349A1 (zh) 一种电力单杆光缆预留装置的监测设备
CN202126470U (zh) 电力电缆绝缘在线监测装置
CN104578429A (zh) 电缆分支箱在线运行监测系统
CN205038280U (zh) 直流换流站接地极在线监测系统
CN203299337U (zh) 一种高压xlpe电缆绝缘在线监测装置
CN120109758A (zh) 一种过电压平抑防护装置
CN201666933U (zh) 三相交流电弧炉的电极绝缘检测装置
CN208384002U (zh) 台区分支线运行数据监测装置
CN104316824A (zh) 铁心接地电流在线监测装置
CN204575735U (zh) 一种接地电流监测装置及户外电流监测系统
CN107706870A (zh) 一种变电站单杆双缆opgw余缆安装金具及安装方法
CN103051057A (zh) 变电设备状态检修智能管理监控系统
CN204789800U (zh) 一种电力钢管杆光缆预留装置的监测设备
CN205982444U (zh) 一种适用于配电线路的故障指示系统
CN105093067A (zh) 一种智能远程故障指示系统
CN205157649U (zh) 应用于封闭绝缘管型母线上的监测系统
CN104502793A (zh) 一种基于可移动式的电网防窃电监测装置及方法
CN204945268U (zh) 避雷器在线监测电路
CN202041559U (zh) 一种用于输电线路接地故障自动定位装置的信号源设备
CN204832317U (zh) 一种分体式漏电测量仪
CN102749486A (zh) 一种用于输电线路接地故障自动定位装置的信号源设备
CN209673141U (zh) 一种gis开关柜在线监测系统
CN202940644U (zh) 变电设备状态检修智能管理监控系统
CN113270942B (zh) 一种消弧线圈运行状态智能监测装置及方法

Legal Events

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

Ref document number: 16813465

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16813465

Country of ref document: EP

Kind code of ref document: A1