WO1983002841A1 - Dispositif pour mesurer la temperature de lignes a haute tension - Google Patents

Dispositif pour mesurer la temperature de lignes a haute tension Download PDF

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Publication number
WO1983002841A1
WO1983002841A1 PCT/SE1983/000046 SE8300046W WO8302841A1 WO 1983002841 A1 WO1983002841 A1 WO 1983002841A1 SE 8300046 W SE8300046 W SE 8300046W WO 8302841 A1 WO8302841 A1 WO 8302841A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
probe
temperature
power line
current
Prior art date
Application number
PCT/SE1983/000046
Other languages
English (en)
Inventor
Intab
Original Assignee
Arnfjorden, Jan
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 Arnfjorden, Jan filed Critical Arnfjorden, Jan
Publication of WO1983002841A1 publication Critical patent/WO1983002841A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/26—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using modulation of waves other than light, e.g. radio or acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures

Definitions

  • the present invention refers to a meter device adapted for detecting of measurment test results at an object, preferably the temperature of the cables at a high-voltage power line whereby a probe, which is arranged at the object, transmits measurment test results to a receiving gauging station.
  • the limit value which could be accepted in the cable. Because of the uncertainty in the calculations and that one must secure large marginals to the limit value the power lines cannot be optimally used. If for example the cable temperature could be increased from 50 degrees C to 60 degrees C the load on the line could be increased with 25 percent. Hereby is realized the importance of being as near as possible to the limit value. It is therefore also important that one is teaching how well the calculating methods corresponds to the reality and find the parts on a line where the highest temperature, at a given load, appears. Today one cannot decide if this is in an open place in the forest, on an open meadow, at a jointing sleeve of the line or at another place.
  • a device which may measure the temperature of the cables of the power lines in the present environment under field service conditions is needed.
  • special problems are connected to measurment of the temperature at optional parts along a high-voltage power line, conventional technique cannot be used.
  • a temperature probe connected to a cable, cannot be galvanic connected to a gauging station located for example on the ground, as the risk for flash-overs from the cable, which may provide a voltage of up to 400 or 800 kilovolt, is impending.
  • To transmit measurment test results wireless in a conventional inductive way or by means of conventional radio transmitting technique involve insurmountable problems in the form of radio interferences which arise in the neighbourhood of power lines intended for high-voltage. The reason to such interferences is corona-effects, creeping currents in the insulators, heavy electromagnetic fields and so on.
  • the object with the present invention is to provide a meter device by which among other things the temperature of a cable of a power line and its instantaneous load may be detected whereby the achieved measurement test results may be transmitted wireless to a gauging station for transcription, storing and/or treatment. Further object is that the meter device should give accurate measurement information, be easy to apply on desired locations along a cable of a power line, be provided with voltage supply from the power line and to be in operation long periods without maintainance. This is achieved thereby that the probe is arranged to transmit measurement test results wireless during short transmitting periods which are located in connection with the zero passage of the current transmitted in the cable of the power line.
  • Fig. 1 shows the invention mounted in its normal operation environment.
  • Fig. 2 shows a view at an angle from below and from the side of one, on a cable of a power line mounted, probe.
  • Fig. 3 shows a cross-section through the probe according to
  • Fig. A shows an example of an transcript of transmitted measurement test results.
  • Fig. 5 shows a current diagram, wherein the measurement and transmitting periods are marked.
  • Fig. 6 shows a block-diagram of the electronic configuration of the probe.
  • Fig. 7 shows a block diagram of the electronic structure of the receiving gauching station.
  • FIG 1 a meter device according to the invention whereby a probe 1 is mounted on one of the cables 3 of the high-voltage power line 2.
  • Beneath the probe 1 is a receiving gauging station located and arranged e.g. to receive frequency modulated radio signals from one or more probes 1 during regularly recurrent time periods.
  • the gauging station 4 includes (see also fig. 7) a radio receiver 5 for frequency modulated signals, electronic units 6, 7, 8 for converting of data, a data storing unit and/or a printer 9 and a modem 10 for possible connection to a centrally located computer 11 by way of a telephone line 12 or the like.
  • the measurement test results which is transmitted from the probe 1 refer to, in this embodiment, the instantaneous current flow in the cable 3, the operation temperature of the cable 3 and its ambient temperature.
  • the information is received of the gauching station 4 and is stored, alternatively is written out, by an earlier decided frequency.
  • the result may e.g. be read off in the form of a written table, wherein the ambient temperature is written furthest to the left, the temperature of the cable 3 in the middle and the present load of the cable 3 in the form of current strength, furthest to the right (see fig. 4). Once an hour date and time is written.
  • the probe 1 is shown more in detail, whereby its soft rounded lines are disclosed, which are intended to decrease among other things the corona-effects against the neighbourhood.
  • the ambient air is easy ionized whereby small discharges, which beams mainly in right angle out from bodies with high-voltage, arise and cause radio frequent and broad band interferences the frequences of which may reach very high in the frequency spectrum. Interferences of this kind change in intensity at different meteorological situations and may together with the interferences from creeping currents be exceptional annoyin for the radio communication, when e.g. moist winds saturate with salt blow from the sea onto the cables and th insulators.
  • Figure 3 show a vertical cross section through the probe 1 in its axial direction.
  • the probe 1 includes a cylindrical casing 13 with thick walls of aluminium and the end parts 14, 15 of which are rounded and preferably designed spherical.
  • the casing 13 is mechanical and galvanical connected to the cable to which the probe is mounted by means of two attachments, 16, 17, each provided with one mainly circular mounting device or brace 18, 19 at the top.
  • a first current transformer 20 arranged in such a way that it at least partly surround the cable 3 and in the other attachment 17 and brace 19 is partly a monolithic temperature sensor 22 arranged in connection to the cable 3 and partly a second current transformer 21 which at least to a part, surround the cable 3.
  • the first current transformer 20 is arranged to detect the current which flows instantaneously through the cable 3 and the other current transformer 21 discharge, by way of the electromagnetic field which occur around the cable 3 in its loaded condition, electrical power which runs the electronic of the probe 1. In this way the need of batteries or other internal or external energy sources is eliminated.
  • the temperature sensor 22 detects the temperature of the cable 3 and emit a measurement test result to the electronics.
  • the ambient temperature of the cable 3 and the probe 1 is detected by means of a temperature sensor 23 located inside the casing 13 of the probe 1.
  • the probe 1 is located at some distance from the cable 3 and has the casing 13, the surface of which has a design which is similar to the surface of the cable 3 is a temperature value obtained which corresponds to the temperature of the cable 3 in its unloaded condition, i.e. a reference value is achieved which may be equal to the ambient temperature.
  • the electronic in the probe 1 consists mainly of integrated circuits manufactured in CMOS-technique, which means that the electronic is current saving and emits very little heat, which does not influence the measuring of the ambient temperature.
  • the attachments 16, 17 of the probe 1 are, as mentioned, at the top designed circular and each is provided with a centrally located hole 24 the diameter of which is adjusted to the diameter of the cable 3 to which the probe 1 is mounted.
  • the cable At the mounting it is nessesary to "squeeze" the cable to make shure that the probe 1 will stay in place and so that the temperature sensor 22 is put in contact to the cable 3.
  • a first current transformer 20 detects the power fields which surrounds the cable 3 and emits an electrical signal, corresponding to the intensity of the power field, to a first converter 26 and to a zero passage detector 27.
  • the output from the converter 26 is supplied to one of the inputs of a A/D-converter 28.
  • the zero passage detector 27 detects the signal from the current transformer 20 and emits a signal each time the current through the cable 3 is zero.
  • a timer 29 initiates an activity modul 30 regularly, e.g. every two minutes, whereby the measurement test results are detected and transmitted. Alternatively the measurement test results may be detected regularly but the transmitting is executed only when some change has occurred of the detected parameter values.
  • the activity module 30 influences, connects in its turn a current supply unit 31, which convert and store energy discharged from the cable 3, and a control logic unit 32.
  • the control logic unit 32 controls the A/D-converter 28 in such a way that the analogue signals from the current transformer 20 and the first and the second temperature sensor 22, 23 is consecutively is connected and converted to digital signals which are fed to a UART-unit.
  • the parallel input signals are converted to serial output signals, which are fed to the FM-transmitter 36.
  • the measurement test results are detected and transmitted, consecutively, during short measurement and transmittin periods, by way of one for the purpose arranged slot-antenna 37, with one on a carrier frequency superpost signal.
  • figure 5 is shown schematically a curve chart of the transmitted current through the cable 3.
  • the power field around the cable increases in proportion to this current as well as the interferences which influence on among other things the radio communication. In an area (shaded) just before and after the passage through the zero level the interferences are as low as possible.
  • the interferences are naturally also connected to the instantaneous voltage of the cable 3 which not always is in exact phase with the current.
  • the probe 1 is therefore arranged to detect zero passage of the current and by means of among other things a timer 38 calculate a measurement and transmitting period (t) the beginning of which lies approximately 60 degrees 6 before the zero passage and which ends approximately 60 degrees after the zero passage. During this period, which accordingly lies symetrically around zero, the electronics of the probe 1 is activated by among other things the zero passage detector 27 in such a way that the detecting of e.g. the parameters current flow, cable temperature and ambient temperature, and the transmitting of these measurement test results to the gauging station 4, is executed.
  • the transmitting velocity may e.g.
  • the electronics may provide measurement, treatment of the measurement test results and transmitting of the measurement test results during the short periods when the current in the cable 3 of the power line is low and consequently discharges, flash-overs and the like, which cause radio-frequent interferences, are at minimum.
  • the existing power lines be used optimally. This is important especially when high loads occur instantaneously and at extreme operation condition, such as for instans at local breakdowns when some line breaks because of for instance "line-rush", flasch-overs or the like. Further expansion of the power lines may, by means of this invention, be displaced in time which may delay costly investments.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

Un compteur décèle les résultats de tests de mesure d'un objet, par exemple, la température d'un câble (3) d'une ligne à haute tension, par l'intermédiaire d'une sonde (1) agencée sur l'objet et qui transmet les données à une station réceptrice de contrôle (4). Lorsque de tels dispositifs de mesure sont utilisés sur des lignes à haute tension (2) transmettant des courants de très haute tension, par exemple 400 ou 800 kV, des problèmes d'interférence résultent de champs de force, fuites, effets de couronne, etc. difficiles à maîtriser. Ces problèmes rendent la transmission conventionnelle de données, par radio ou par induction, impossible. L'invention permet d'obtenir une transmission sûre de données car la sonde (1) est conçue pour transmettre des données pendant des courtes périodes de transmission (t) établies en liaison avec le passage zéro du courant transmis par le câble (3) de la ligne à haute tension.
PCT/SE1983/000046 1982-02-12 1983-02-14 Dispositif pour mesurer la temperature de lignes a haute tension WO1983002841A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8200838-4820212 1982-02-12
SE8200838A SE8200838L (sv) 1982-02-12 1982-02-12 Anordning for temperaturmetning vid kraftledningslinor

Publications (1)

Publication Number Publication Date
WO1983002841A1 true WO1983002841A1 (fr) 1983-08-18

Family

ID=20345986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1983/000046 WO1983002841A1 (fr) 1982-02-12 1983-02-14 Dispositif pour mesurer la temperature de lignes a haute tension

Country Status (4)

Country Link
EP (1) EP0101483A1 (fr)
AU (1) AU1224583A (fr)
SE (1) SE8200838L (fr)
WO (1) WO1983002841A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014999A1 (fr) * 1991-02-25 1992-09-03 Asea Brown Boveri Ab Dispositif de mesure de temperature
WO2006040638A1 (fr) * 2004-10-12 2006-04-20 Eaton Corporation Capteur pour bus de puissance auto-alimente utilisant une communication sans fil
CN101762333B (zh) * 2010-01-11 2011-02-16 山西大学 高压电力线无线温度采集系统
WO2013119738A1 (fr) * 2012-02-09 2013-08-15 Electric Power Research Institute, Inc. Procédé de mesure de la température d'un conducteur électrique
ES2542043A1 (es) * 2014-12-10 2015-07-29 Universidad De Cantabria Método y sistema para la medición directa y sin contacto de la temperatura superficial en un cable
WO2016028274A1 (fr) * 2014-08-19 2016-02-25 Southern States, Llc Systeme de surveillance et de reponse de ligne de transport d'electricite pour l'evitement d'effet couronne
US9442138B2 (en) 2014-08-05 2016-09-13 Southern States, Llc High voltage sensor located within line insulator
US9581624B2 (en) 2014-08-19 2017-02-28 Southern States, Llc Corona avoidance electric power line monitoring, communication and response system
EP3227652A4 (fr) * 2014-12-02 2018-07-04 3M Innovative Properties Company Détection de température sur la base du magnétisme pour ligne de transport d'électricité

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109489840A (zh) * 2018-11-16 2019-03-19 国网上海市电力公司 一种基于云端数据库的电缆中间头在线测温系统及方法
CN110553756B (zh) * 2019-09-05 2021-01-08 上海洛霖能源互联网技术合伙企业(有限合伙) 一种电缆温度检测系统及用于该系统的无线温度传感器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260116A (en) * 1963-05-15 1966-07-12 Gen Electric Remote reading temperature indicating system
US3748655A (en) * 1966-09-20 1973-07-24 Anaconda Co Temperature monitored cable system with telemetry read-out
DE2208732A1 (de) * 1972-02-24 1973-08-30 Inst Elektro Anlagen Schaltungsanordnung zur gewaehrleistung der stoersicherheit bei systemen zur informationsuebertragung und informationsverarbeitung und bei systemen der mess-, steuerund regelungstechnik
SE392772B (sv) * 1976-05-19 1977-04-18 Manitoba Research Council Elektriskt metanordning for metning av strom i hogspenningsledningar
DE2712064B2 (de) * 1977-03-15 1979-12-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Strommeßeinrichtung
GB1592971A (en) * 1977-01-07 1981-07-15 Pico Electronics Ltd Electrical appliance control

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260116A (en) * 1963-05-15 1966-07-12 Gen Electric Remote reading temperature indicating system
US3748655A (en) * 1966-09-20 1973-07-24 Anaconda Co Temperature monitored cable system with telemetry read-out
DE2208732A1 (de) * 1972-02-24 1973-08-30 Inst Elektro Anlagen Schaltungsanordnung zur gewaehrleistung der stoersicherheit bei systemen zur informationsuebertragung und informationsverarbeitung und bei systemen der mess-, steuerund regelungstechnik
SE392772B (sv) * 1976-05-19 1977-04-18 Manitoba Research Council Elektriskt metanordning for metning av strom i hogspenningsledningar
GB1592971A (en) * 1977-01-07 1981-07-15 Pico Electronics Ltd Electrical appliance control
DE2712064B2 (de) * 1977-03-15 1979-12-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Strommeßeinrichtung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Elektrizitatswirtschaft Volume 59, 1960, No. 17, 5 September 1960, Frankfurt am Main, E. Alsleben, "Die neuere Entwicklung der Tragerfrequenztechnik auf Hochspannungsleitungen", pages 599 to 605, especially page 599, column 1. *
Siemens-Zeitschrift, Volume 52, 1978, No. 8, August 1978, Berlin, Hans-Geert Beckermann, "Datenubertragung in TFH-Netzen mit dem Einseitenbandsystem ESB 400", pages 478 to 482, especially page 481, column 1, lines 30 to 47. *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014999A1 (fr) * 1991-02-25 1992-09-03 Asea Brown Boveri Ab Dispositif de mesure de temperature
US5525976A (en) * 1991-02-25 1996-06-11 Asea Brown Boveri Ab Temperature measuring system
WO2006040638A1 (fr) * 2004-10-12 2006-04-20 Eaton Corporation Capteur pour bus de puissance auto-alimente utilisant une communication sans fil
KR101237611B1 (ko) 2004-10-12 2013-02-26 이턴 코포레이션 센서 장치
CN101762333B (zh) * 2010-01-11 2011-02-16 山西大学 高压电力线无线温度采集系统
US8657490B2 (en) 2012-02-09 2014-02-25 Electric Power Research Institute, Inc. Method for measuring electrical conductor temperature
WO2013119738A1 (fr) * 2012-02-09 2013-08-15 Electric Power Research Institute, Inc. Procédé de mesure de la température d'un conducteur électrique
US9442138B2 (en) 2014-08-05 2016-09-13 Southern States, Llc High voltage sensor located within line insulator
WO2016028274A1 (fr) * 2014-08-19 2016-02-25 Southern States, Llc Systeme de surveillance et de reponse de ligne de transport d'electricite pour l'evitement d'effet couronne
US9581624B2 (en) 2014-08-19 2017-02-28 Southern States, Llc Corona avoidance electric power line monitoring, communication and response system
EP3227652A4 (fr) * 2014-12-02 2018-07-04 3M Innovative Properties Company Détection de température sur la base du magnétisme pour ligne de transport d'électricité
US10422704B2 (en) 2014-12-02 2019-09-24 3M Innovative Properties Company Magnetic based temperature sensing for electrical transmission line
ES2542043A1 (es) * 2014-12-10 2015-07-29 Universidad De Cantabria Método y sistema para la medición directa y sin contacto de la temperatura superficial en un cable

Also Published As

Publication number Publication date
SE8200838L (sv) 1983-08-13
EP0101483A1 (fr) 1984-02-29
AU1224583A (en) 1983-08-25

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