JP4980824B2 - High voltage power cable connection device and temperature monitoring method for high voltage power cable connection - Google Patents

High voltage power cable connection device and temperature monitoring method for high voltage power cable connection Download PDF

Info

Publication number
JP4980824B2
JP4980824B2 JP2007219855A JP2007219855A JP4980824B2 JP 4980824 B2 JP4980824 B2 JP 4980824B2 JP 2007219855 A JP2007219855 A JP 2007219855A JP 2007219855 A JP2007219855 A JP 2007219855A JP 4980824 B2 JP4980824 B2 JP 4980824B2
Authority
JP
Japan
Prior art keywords
power cable
conductor
voltage power
temperature
high
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.)
Active
Application number
JP2007219855A
Other languages
Japanese (ja)
Other versions
JP2009053025A (en
Inventor
泰伸 堀
Original Assignee
株式会社フジクラ
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 株式会社フジクラ filed Critical 株式会社フジクラ
Priority to JP2007219855A priority Critical patent/JP4980824B2/en
Publication of JP2009053025A publication Critical patent/JP2009053025A/en
Application granted granted Critical
Publication of JP4980824B2 publication Critical patent/JP4980824B2/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Description

  The present invention directly measures the conductor temperature of the connection portion of the high-voltage power cable and can monitor the temperature externally based on the measured value, and the temperature monitoring method of the connection portion of the high-voltage power cable About.

  2. Description of the Related Art Conventionally, electric power equipment has been temperature-monitored using a temperature indicating label or a non-contact temperature measuring device in order to detect an abnormality of a connection portion as a general maintenance method.

  For example, the temperature monitoring device of Patent Literature 1 is attached to a bare charging portion that is a target to be monitored by a reflector. In this reflector, the reflection state of the reflected light with respect to the incident light is changed by the phenomenon of discoloration or deformation due to the temperature change of the bare charged portion. In addition, a photoelectric switch having a contact that projects light on the reflector and opens and closes by a change in reception of the reflected light is provided. Thereby, when the reflection state of the reflector changes due to the temperature change of the bare charging portion, the contact of the photoelectric switch is opened and closed, and an alarm is issued, whereby temperature monitoring is performed.

  Moreover, the temperature management apparatus of patent document 2 has adhered the temperature change color member to the temperature management member, and monitors this temperature change color member with a color sensor. When the temperature of the temperature management member reaches a predetermined value, the color sensor detects a set color indicated by the temperature change color changing member and sends a predetermined electric signal. Further, the color sensor includes a color camera head that captures the temperature change color member, and a controller that detects a set color of the temperature change color member captured by the color camera head and sends a predetermined electrical signal. Yes.

  Moreover, the temperature display apparatus of patent document 3 is an apparatus which detects the temperature near charging parts, such as an electric wire, and displays it on a liquid crystal element. That is, in order to use the electric field energy, a current collecting unit composed of two or one current collecting plate is disposed near the charging unit. This current collector is connected to a temperature display circuit for displaying the temperature detected by the temperature sensor on the liquid crystal element. The current collecting unit is set so that the power induced in the current collecting unit by the electric field near the charging unit during the hot line satisfies the power necessary for driving the temperature display circuit.

  Moreover, the thermal label of patent document 4 performs temperature management by informing the overheated state etc. of a generator, a motor, a heater, etc. with an odor. That is, in the heat-sensitive label, an odorant layer is provided on an absorbent base material layer such as Japanese paper or fine paper, and the odorant layer is covered with a heat-meltable composition layer and a gas-permeable film layer. The hot-melt composition layer effectively suppresses the odorant from evaporating in the odorant layer and stores it in an encapsulated state for a long time.

  By sticking such a heat-sensitive label to the device, when an overheating abnormality occurs in the device, the hot-melt composition layer is melted and a part thereof is absorbed by the absorbent base material layer. The odorant in the odorant layer is volatilized by passing through the molten heat-meltable composition layer and the gas permeable film layer, and stimulates the olfaction of a nearby person.

In the disconnector with temperature monitoring device of Patent Document 5, a light shielding plate is attached via a shape memory alloy having one end fixed to a contact portion of the disconnector. An optical fiber support is attached to the contact portion, and the ends of the pair of optical fiber cables are opposed to each other by the optical fiber support. It arrange | positions so that the said light-shielding plate may be interposed in this opposing part. Further, a temperature sensor is attached to the contact portion, and converts the temperature rise into an optical signal. When heat is generated due to deterioration or poor contact of the contact portion and the temperature changes, the shape memory alloy is deformed, so that the light shielding plate moves forward and backward in the opposite portion of the optical fiber cable. Accordingly, the temperature sensor generates an optical signal, and this optical signal is transmitted to an appropriate detection device via the optical fiber cable, thereby notifying an abnormality.
JP-A-2-190724 Japanese Patent Laid-Open No. 10-115560 Japanese Patent No. 2754943 Japanese Patent No. 3176731 Japanese Utility Model Publication No. 4-29468

  By the way, as for the conventional patent documents 1-patent documents 4, although a temperature indication label is effective for the connection part which a charging part (conductor connection part) exposes, for example, about the connection part where a charging part is concealed by a grounding layer etc. Cannot measure the conductor directly.

Also, those that transmit optical signals of the temperature sensor in the optical fiber cable as in Patent Document 5, and the terminal end there is charged exposed part in voltage application state, the connecting portion or the like of the overhead conductors can direct the unit is measured However, in the case of having a laminated structure such as a charging part, an insulating part, and a grounding part from the inside like a connecting part of a high-voltage power cable, in order to ensure the insulating performance of the connecting part, the optical fiber can be pulled out to the outside. Can not.

  As described above, since the conductor temperature cannot be measured directly for a connection part that is completely covered with a grounding layer, such as the connection part of a high-voltage power cable, the temperature of the external grounding layer surface of the high-voltage power cable cannot be measured. There was no other way than to implement and estimate the internal conductor temperature by its temperature.

  An object of the present invention is to provide a connection device for a high-voltage power cable that can directly measure the conductor temperature of the connection portion of the high-voltage power cable and can monitor the temperature externally based on the measured value.

  In order to solve the above-mentioned problem, the connection device of the high-voltage power cable of the present invention is a conductor connection tube that is fitted to the outer periphery of the high-voltage power cable with the conductors butted against each other and connects the conductors, A wireless temperature sensor that is in contact with the surface of the conductor connection tube to measure the temperature of the conductor via the conductor connection tube, and a part of the wireless temperature sensor and the conductor connection tube that form an insulating cylinder It is characterized by being provided inside the inner semiconductive layer.

Further, the high voltage power cable connection device according to the present invention is the above high voltage power cable connection device, wherein the sleeve cover is made of a semiconductive rubber or a semiconductive resin between the internal semiconductive layer and the conductor connecting tube. Is preferably provided.

In the high voltage power cable connection device according to the present invention, the internal semiconductive layer is preferably a semiconductive rubber or a semiconductive resin.

According to the temperature monitoring method of the connecting portion of the high voltage power cable of the present invention, the conductor connection tube is fitted to the outer periphery of the conductors of the high voltage power cable in contact with each other, and the conductors are connected to each other. A wireless temperature sensor is brought into contact with the surface, and the wireless temperature sensor and the conductor connecting pipe are incorporated in an internal semiconductive layer constituting an insulating cylinder,
The wireless temperature sensor measures the temperature of the conductor through the conductor connection pipe, converts the measured temperature measurement value into transmission data, and transmits the transmission data to the outside of the insulating cylinder. The temperature of the conductor of the high-voltage cable is monitored based on a temperature measurement value received from the reception device and converted from the received transmission data.

  As will be understood from the means for solving the problems as described above, according to the high voltage power cable connection device of the present invention, the conductors of the high voltage power cable are fitted and connected to the outer periphery in a state where the conductors are in contact with each other. Since the wireless temperature sensor is brought into contact with the surface of the conductor connection tube, and this wireless temperature sensor is housed in the inner semiconductive layer constituting the insulating cylinder having the same potential as the conductor connection tube, The entire sensor circuit of the wireless temperature sensor can be kept at the same potential as that of the conductor connecting tube and the conductor, and a failure or malfunction of the sensor circuit due to the line voltage can be prevented. Therefore, it is possible to directly measure the temperature of the connection part of the high-voltage power cable concealed by the ground layer, which was impossible in the past, with a wireless temperature sensor, and to transmit this temperature measurement value to the outside. Can communicate with. Moreover, since it is a wireless system, the insulation performance of the connection part of a high voltage power cable is not deteriorated.

  Further, according to the temperature monitoring method for the connecting portion of the high-voltage power cable of the present invention, the wireless temperature sensor is attached to the surface of the conductor connecting tube that is fitted and connected to the outer periphery of the conductor of the high-voltage power cable in contact with each other. Since this wireless temperature sensor is housed inside some of the internal semiconductive layers constituting the insulating cylinder, the above-mentioned direct measurement with the wireless temperature sensor is possible without causing circuit failure or malfunction. The measured temperature value of the conductor measured through the conductor connection pipe can be transmitted to the outside as transmission data. This transmitted data is received by an external receiving device and converted into a temperature measurement value. Based on this temperature measurement value, the temperature of the connection portion of the high-voltage power cable, which has been difficult in the past, is directly measured. Therefore, temperature management can be easily performed, and more accurate maintenance can be performed.

  Embodiments of the present invention will be described below with reference to the drawings.

  Referring to FIG. 1, a connecting device 1 for a high-voltage power cable according to this embodiment has a butting portion 7 in a state in which the conductors 5 are butted against each other in order to connect the conductors 5 of the high-voltage power cable 3. The outer periphery of the so-called charging unit is fitted with a conductor connecting tube 9 (also referred to as “sleeve”), and the conductors 5 are connected and connected. A wireless temperature sensor 11 for measuring the temperature of the conductor 5 is disposed in contact with the surface of the conductor connection tube 9.

  In this embodiment, the wireless temperature sensor 11 is an active type RFID and uses a frequency band around 312 MHz. As another example of the wireless temperature sensor 11, a passive or semi-passive wireless temperature sensor 11 can be used.

  The conductor connecting tube 9 and the wireless temperature sensor 11 are configured such that the outer periphery thereof is covered with a sleeve cover 13 made of a conductive resin, and the wireless temperature sensor 11 is built in the sleeve cover 13. The sleeve cover 13 is a semiconductive rubber molded product, and is used to keep the inner semiconductive layer 17 of the insulating cylinder 15 described later at the same potential.

  Further, the outer periphery of the sleeve cover 13 is covered with an insulating cylinder 15, and the insulating cylinder 15 is integrally molded from the inside with a three-layer structure of an internal semiconductive layer 17, an insulating layer 19, and an external semiconductive layer 21. It is a rubber molded product. Further, spacers 23 for insulating and reinforcing the gap between the high voltage power cable 3 and the insulating cylinder 15 are mounted on the left and right sides of the sleeve cover 13 in FIG.

  The outer periphery of the insulating cylinder 15 and the outer periphery of the high-voltage power cable 3 on both the left and right sides of the abutting portion 7 are covered with a protective cover 25 made of, for example, three layers of rubber.

  As the conductive resin for the insulating cylinder 15 and the sleeve cover 13, a semiconductive rubber or a semiconductive resin can be used.

  A receiving device 27 is provided outside the high-voltage power cable 3 to receive communication of transmission data of temperature measurement values measured by the wireless temperature sensor 11 and to monitor the temperature.

  With the above configuration, since the wireless temperature sensor 11 is housed in the conductive resin of the sleeve cover 13 covered with the inner semiconductive layer 17 of the insulating cylinder 15, the entire sensor circuit of the wireless temperature sensor 11 is a conductor. 5 can be maintained at the same potential as that of the sensor circuit 5, and failure or malfunction of the sensor circuit due to the line voltage can be prevented. As a result, the temperature of the conductor connection tube 9 is directly measured by the wireless temperature sensor 11, so that the temperature of the conductor 5 is measured, and the measured temperature measurement value is converted into transmission data. Since the transmission data is transmitted to the outside of the high voltage power cable 3, the transmission data can be communicated with the external receiving device 27.

  Therefore, the temperature of the conductor 5 of the high-voltage power cable as the power equipment concealed by the ground layer, which has been impossible in the past, can be directly measured via the conductor connection tube 9, and can be easily monitored from the outside. In other words, it is possible to perform temperature management and perform more accurate maintenance. Moreover, since it is a wireless system, the insulation performance of the connection part 7 of a high voltage | pressure power cable is not reduced.

  The basic structure of the high-voltage power cable connection device 1 of this embodiment is that the wireless temperature sensor 11 is provided in the conductive resin layer of the insulating cylinder 15, that is, in the internal semiconductive layer 17 in this embodiment. By incorporating this sensor circuit, the entire sensor circuit is set to the same potential so that no abnormality such as a potential difference is given to the inside of the sensor circuit when the high-voltage power cable is charged.

  That is, in FIG. 1, the semiconductive sleeve cover 13 is described as an example of a member that incorporates the wireless temperature sensor 11, but basically the wireless temperature sensor 11 can be removed without the sleeve cover 13. It is sufficient that the temperature sensor 11 is disposed between the inner semiconductive layer 17 of the insulating cylinder 15 and the conductor connection tube 9 and the surface of the conductor connection tube 9 is in contact with the wireless temperature sensor 11. For example, the inner semiconductive layer 17 can be configured to have the shape of the sleeve cover 13 of FIG. 1 and directly incorporate the wireless temperature sensor 11 in contact with the surface of the conductor connection tube 9.

  In addition to the above-described embodiment, the high-voltage power cable connection device 1 is a connection portion at a connection location where the conductors of the high-voltage power cable such as a device direct connection portion and an indoor / outdoor termination connection portion are abutted and connected to each other. It can also be incorporated in rubber and plastic covers for use, and the application range can be expanded.

  The high-voltage power cable 3 used in this embodiment is used at a voltage of 33 kV or less, but can also be applied to the high-voltage power cable 3 that can be used at a voltage higher than that.

Incidentally, in a temperature monitoring method of the connection portion of the high voltage cables 3 above was subjected to a reception confirmation test of the temperature data in a voltage application state, 12.7kV (22 / √3kV) Division conductive during at ground, about 2m It was confirmed that communication was possible at a distance of (meters). That is, the wireless communication distance was about 2 m (meters).

It is a schematic explanatory drawing including the principal part cross section which shows the connection apparatus of the high voltage | pressure power cable of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 High voltage power cable connection apparatus 3 High voltage power cable 5 Conductor 7 Butting part 9 Conductor connection pipe 11 Wireless temperature sensor 13 Sleeve cover 15 Insulating cylinder 17 Internal semiconductive layer 19 Insulating layer 21 External semiconductive layer 23 Spacer 25 Protective cover 27 Receiver

Claims (4)

  1.   A conductor connection tube that is fitted to the outer periphery of the high-voltage power cable with the conductors abutted to each other and connects the conductors, and the surface of the conductor connection tube to measure the temperature of the conductor via the conductor connection tube A high-temperature power cable comprising: a wireless temperature sensor that is in contact with the wireless temperature sensor; and the wireless temperature sensor and the conductor connecting pipe provided inside a part of the internal semiconductive layer constituting the insulating cylinder. Connected device.
  2. The high voltage power cable connection device according to claim 1, wherein a sleeve cover made of semiconductive rubber or semiconductive resin is provided between the inner semiconductive layer and the conductor connecting pipe.
  3. The high voltage power cable connection device according to claim 1, wherein the internal semiconductive layer is a semiconductive rubber or a semiconductive resin.
  4. In a state where the conductors of the high-voltage power cable are abutted against each other, a conductor connecting tube is fitted to the outer periphery of the cable to connect the conductors, a wireless temperature sensor is brought into contact with the surface of the conductor connecting tube, and an insulating cylinder is provided. Built-in the wireless temperature sensor and the conductor connection tube in the internal semiconductive layer that comprises,
    The wireless temperature sensor measures the temperature of the conductor through the conductor connection pipe, converts the measured temperature measurement value into transmission data, and transmits the transmission data to the outside of the insulating cylinder. A temperature monitoring method for a connecting portion of a high-voltage power cable, characterized in that the temperature of the conductor of the high-voltage cable is monitored based on a temperature measurement value received from the reception device and converted from the received transmission data.
JP2007219855A 2007-08-27 2007-08-27 High voltage power cable connection device and temperature monitoring method for high voltage power cable connection Active JP4980824B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007219855A JP4980824B2 (en) 2007-08-27 2007-08-27 High voltage power cable connection device and temperature monitoring method for high voltage power cable connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007219855A JP4980824B2 (en) 2007-08-27 2007-08-27 High voltage power cable connection device and temperature monitoring method for high voltage power cable connection

Publications (2)

Publication Number Publication Date
JP2009053025A JP2009053025A (en) 2009-03-12
JP4980824B2 true JP4980824B2 (en) 2012-07-18

Family

ID=40504232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007219855A Active JP4980824B2 (en) 2007-08-27 2007-08-27 High voltage power cable connection device and temperature monitoring method for high voltage power cable connection

Country Status (1)

Country Link
JP (1) JP4980824B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016065574A1 (en) * 2014-10-30 2016-05-06 3M Innovative Properties Company Capacitive temperature sensing for electrical conductor
WO2017107000A1 (en) * 2015-12-21 2017-06-29 3M Innovative Properties Company Real-time temperature measurement for electrical conductors

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102466529A (en) * 2010-11-05 2012-05-23 陈津 Structure of high voltage temperature on-line monitoring radio transmission collar
WO2012062022A1 (en) * 2010-11-11 2012-05-18 浙江图维电力科技有限公司 On-line detection device for inner temperature of power cable joint based on radio frequency technology and method thereof
CN103376170A (en) * 2012-04-17 2013-10-30 陈津 Structure of built-in temperature sensor of high voltage GIS
CN103674291A (en) * 2012-11-01 2014-03-26 曾奕 Temperature monitoring system of all-insulated bus
KR101331870B1 (en) 2012-11-28 2013-11-21 조성전력 주식회사 Deterioration sensing method of power line connecting pant
AU2013388629A1 (en) * 2013-05-03 2015-11-19 3M Innovative Properties Company System for monitoring temperature of electrical conductor
JP2016534359A (en) * 2013-09-11 2016-11-04 スリーエム イノベイティブ プロパティズ カンパニー System and method for monitoring the temperature of an electrical conductor
CN104112349A (en) * 2014-06-06 2014-10-22 辽宁立德电力电子股份有限公司 High-voltage cable connector wireless temperature measuring apparatus
CN104157118A (en) * 2014-08-01 2014-11-19 国家电网公司 Wireless temperature measurement equipment for high-tension switch cabinet
CN105207166A (en) * 2015-09-22 2015-12-30 波瑞电气有限公司 Cable branch box based on wireless communication of IPV6 smart ad-hoc network
DE102016105949A1 (en) * 2016-03-31 2017-10-05 Abb Schweiz Ag Non-intrusive temperature measuring device
CN106207940A (en) * 2016-08-30 2016-12-07 廊坊芳远新合电气有限公司 A kind of cable connector with temp sensing function
CN106768443A (en) * 2016-12-28 2017-05-31 国网山东省电力公司济南供电公司 A kind of high-tension cable conductor temperature measurement apparatus
JP6234646B1 (en) * 2017-03-27 2017-11-22 三菱電機株式会社 Temperature measuring instrument, gas insulating device, and conductor temperature measuring method
JP2019208298A (en) * 2018-05-28 2019-12-05 スリーエム イノベイティブ プロパティズ カンパニー Power cable connection structure and temperature detection system thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4434602B2 (en) * 2003-02-28 2010-03-17 中国電力株式会社 Power cable conductor temperature estimation method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016065574A1 (en) * 2014-10-30 2016-05-06 3M Innovative Properties Company Capacitive temperature sensing for electrical conductor
US10458860B2 (en) 2014-10-30 2019-10-29 3M Innovative Properties Company Capacitive temperature sensing for electrical conductor
WO2017107000A1 (en) * 2015-12-21 2017-06-29 3M Innovative Properties Company Real-time temperature measurement for electrical conductors

Also Published As

Publication number Publication date
JP2009053025A (en) 2009-03-12

Similar Documents

Publication Publication Date Title
US8160825B1 (en) Process for remote grounding, transmission sensing, and temperature monitoring device
ES2421304T3 (en) Charging cable connector for connecting an electric vehicle to a charging station
US6559437B1 (en) Fiber optic damage sensor for wire and cable
CN102175341A (en) Accurate temperature measurement technology and device thereof for cable connector based on radio frequency technology
US20090153089A1 (en) Apparatus for monitoring of brushes, in particular slipring or commutator brushes, on electrical machines
US8002592B2 (en) Data collecting connection
US7135988B2 (en) Temperature recorder and temperature recording and controlling system for power supply equipment
CN101782437B (en) High-voltage switch contact temperature online monitoring device
US9276399B2 (en) Method and system for monitoring a cable system of an electric power transmission system
CN103259208A (en) Intelligent medium voltage switch cabinet
US20040052294A1 (en) Temperature monitor for electro-mechanical part
KR101194021B1 (en) Distributing board using many area temperature sensing
JP2002367457A (en) Composite electrical insulator having integrated optical fiber sensor
CN201837467U (en) Device for measuring temperature of power line contact by adopting RFID (radio frequency identification) technology
RU2532417C2 (en) Temperature control for distribution bus system
EP2751534B1 (en) System for monitoring electric supply lines
US20150059195A1 (en) Measurement tape for an elevator device
CN104681367B (en) The optical fiber infrared of power disconnecting switch hot stall controls trip free device and method
KR20070078195A (en) System and method for detecting a partial discharge of a powercable
CN102498655B (en) Apparatus and method for generating electric energy in an electric power transmission system
CN102788645B (en) Infrared monitoring system for temperature rise of electric connecting point of electrical equipment and monitoring method
US8358217B2 (en) Stationary induction apparatus and monitoring device thereof
CN201667558U (en) On-line monitoring device for outdoor high-voltage switch temperature
CN202141524U (en) Switch cabinet temperature monitoring system based on wireless network
US9725280B2 (en) Connecting device for measurement tapes in elevator devices

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100607

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120221

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120322

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120410

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120419

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150427

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250