WO1999042844A1 - Controleur de puissance - Google Patents

Controleur de puissance Download PDF

Info

Publication number
WO1999042844A1
WO1999042844A1 PCT/AU1999/000107 AU9900107W WO9942844A1 WO 1999042844 A1 WO1999042844 A1 WO 1999042844A1 AU 9900107 W AU9900107 W AU 9900107W WO 9942844 A1 WO9942844 A1 WO 9942844A1
Authority
WO
WIPO (PCT)
Prior art keywords
power monitoring
conductor
voltage
current
divider
Prior art date
Application number
PCT/AU1999/000107
Other languages
English (en)
Inventor
Anthony Joseph Higgins
Original Assignee
The University Of Sydney
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 The University Of Sydney filed Critical The University Of Sydney
Priority to AU27063/99A priority Critical patent/AU2706399A/en
Publication of WO1999042844A1 publication Critical patent/WO1999042844A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
    • 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
    • G01R15/04—Voltage dividers
    • G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer

Definitions

  • This invention concerns a power monitoring apparatus.
  • the apparatus is, in use, attached to a conductor to monitor electric power.
  • Auxiliary sensors may also be included in the apparatus to provide condition monitoring.
  • a typical application for units of the apparatus may involve three remote units linked to respective phases of a three phase supply. Each of the units is optically linked to local instrumentation to monitor the supply.
  • Non-conventional voltage sensors have been developed based on highly resistive voltage strings or electro-optic techniques such as the Pockels effect.
  • the invention is a power monitoring apparatus comprising, along with other optional components, a capacitative divider having an input voltage terminal at one end to connect to a conductor and a ground terminal at the other end to connect to ground potential, and a power monitoring module which is connected to the capacitative divider to be energised from voltages appearing across part of the divider.
  • the power monitoring module includes ports to receive signal from a current sensor measuring current in the conductor, and from a voltage sensor measuring voltage on the conductor.
  • the power monitoring module also includes an optical signal encoder to code the data for transmission over an optical fibre link, and a port for connection to a fibre optic cable. The signal may be split at the receiver which is not the case for conventional equipment.
  • module power is supplied from a voltage across the capacitative divider, rather than current from a powering current transformer, the monitoring module is always energised except when the conductor is 'de- energised', which includes when the current is zero for extended periods. Powering the monitoring module from the capacitive divider provides adequate power down to a small fraction of the apparatus rated voltage allowing voltage measurement well within the standards.
  • a battery back-up, or some other energy storage such as a storage capacitor, and coordinated shut-down could allow management for out-of service periods.
  • Some form of analog indicator such as an LED could be used to provide an additional indication of voltage on the conductor.
  • an additional optical fibre and analogue transmitter can be used to provide this indication. The transmitter may use the same fibre or an additional fibre.
  • Sensors may have very high performance, and may require only ultra low power supply. For instance, current may be measured by means of a conventional low insulation current transformer or even a "Rogowski” coil. When a "Rogowski” coil is used the voltage and current transducers may be integrated into a single transducer with the coil acting as a voltage screen. Furthermore there need be no interaction between current and voltage sensors via field effects - a factor that complicates the design of conventional high voltage combined instrument transformers and substation layout. The design of the capacitative divider may be simplified as a result of the low power consumption and high input impedance of the monitor module.
  • the capacitative divider may conveniently take the form of a capacitor type voltage transformer. These devices usually take the form of a capacitor bushing in which concentric and insulated cylinders/screens are placed around a conductor. A single voltage screen may be sufficient. Intermediate voltages can be tapped off the screens, and these can then be stepped down by a small voltage transformer, if desired. Space savings result from the combined arrangement of the optically isolated current, voltage and condition monitoring sensors being located within a single apparatus, and the weight is reduced.
  • the need for sampling synchronisation between electrical phases to maintain polyphase measurement accuracy may be avoided by using a high sampling rate.
  • a single fibre asynchronous apparatus transmission may be used with no up-link being required for phase synchronisation.
  • cabling costs and complexity are lowered.
  • Line powering from the conductor allows increased circuit consumption compared to optically powered apparatus. This offers new levels of performance giving potentially very high resolution and accuracy, relatively high sample rates, accurate signal conditioning and complex apparatus protection and self-monitoring.
  • the increased availability of transmitter power means large optical transmission distances are possible with no error, noise or interferences with insignificant delay.
  • Condition monitoring auxiliary sensors may be included in the power monitoring module for fault detection and to measure other parameters, such as leakage current, gas detection, temperature, and pressure. Protection equipment may also be included along with the monitoring. The data from all the sensors may be multiplexed before transmission to the ground station where a wide range of interfacing options are available.
  • the apparatus may integrate new electronic, material, and optical technology as it is improved.
  • the apparatus combines current and voltage monitoring in a single unit, and as a result the cost is expected to be a fraction of presently available optical and conventional apparatus.
  • Figure 1 is a schematic representation of a power monitoring apparatus when used to monitor a high voltage conductor.
  • Figure 2 is a schematic illustration of a bushing embedded example of the power monitoring apparatus.
  • the power monitoring apparatus comprises a capacitative divider.
  • the divider involves at least two capacitors connected in series to form a capacitor string 1 having a high voltage terminal 2 at one end connected to a high voltage conductor 3.
  • a low voltage terminal 4 at the other end is connected to ground potential.
  • a power monitoring module 5 is connected across the top capacitor 6 of the string 2 so that it is energised from voltages appearing across that capacitor 6.
  • a resistive or capacitive divider network may optionally be used to reduce the voltage being sensed.
  • the power monitoring module 5 includes a first port 8 receiving data from a current sensor 9 measuring current in the high voltage conductor 3, and a second port 10 receiving data from a voltage sensor 11 measuring voltage on the conductor 3.
  • the power monitoring module also includes an optical signal encoder 12 to code the data for transmission over an optical fibre link, a transmitter 13 and a port 14 for connection to a fibre optic cable 15.
  • the optical cable 15 carries the data to a ground station 16 where data analysis, system monitoring and management take place.
  • FIG. 2 is a pictorial view of a bushing embedded capacitative divider 20.
  • the high voltage conductor 21 enters a current transformer shield 22 at the top and passes through low insulation current transformers 23. Beneath this is a 'bypass' conductor and encoder shield 24 and the encoding module 25.
  • An optical fibre 26 is fitted between the encoder 25 to an optical connector box 27 mounted on the top of the equipment tank 28. The link may allow communication with monitoring equipment.
  • Equipotential cylinders 29 extend down inside the ceramic or composite insulation 30, separated from each other by screens or shields 31.
  • the encoder is powered by the voltage obtained from the equipotential cylinders 29. This also gives a voltage proportional to the conductor voltage as a capacitative divider voltage sensor.
  • bushing type capacitative dividers can be used to replace bushings on a large variety of equipment, such as power transformers, circuit breakers, and bulkheads during routine refurbishment and may be used in new equipment also.
  • condition monitoring auxiliary sensors such as a leakage current detector 17 may be incorporated into it.
  • the capacitative divider could be fitted to a high voltage circuit breaker the whole apparatus could provide combined protection, metering and circuit interruption in a single unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

L'invention concerne un contrôleur de puissance qui est fixé à un conducteur pour contrôler la puissance électrique. Le contrôleur utilise un diviseur capacitif présentant une borne de tension d'entrée (2) au niveau d'une extrémité pour se connecter à un conducteur (3) et une borne de mise à la terre (4) au niveau de l'autre extrémité pour se connecter à un potentiel à la terre et un module (5) de contrôle de puissance qui est connecté au diviseur capacitif qui est commandé par des tensions circulant dans une partie du diviseur. Le module (5) de contrôle de puissance comprend des ports (8, 10) servant à recevoir un signal en provenance d'un capteur de courant (9) mesurant le courant circulant dans le conducteur (3) et en provenance d'un capteur de tension (11) mesurant la tension sur le conducteur (3). Le module (5) de contrôle de puissance comprend aussi un codeur de signal optique (12) servant à coder les données à transmettre via une liaison à fibre optique et un port (14) à connecter à un câble à fibre optique (15). Des capteurs auxiliaires sont aussi compris dans le contrôleur pour assurer le contrôle de fonctionnement.
PCT/AU1999/000107 1998-02-23 1999-02-22 Controleur de puissance WO1999042844A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27063/99A AU2706399A (en) 1998-02-23 1999-02-22 Power monitoring apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPP1958 1998-02-23
AUPP1958A AUPP195898A0 (en) 1998-02-23 1998-02-23 High voltage power monitoring apparatus

Publications (1)

Publication Number Publication Date
WO1999042844A1 true WO1999042844A1 (fr) 1999-08-26

Family

ID=3806226

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1999/000107 WO1999042844A1 (fr) 1998-02-23 1999-02-22 Controleur de puissance

Country Status (2)

Country Link
AU (1) AUPP195898A0 (fr)
WO (1) WO1999042844A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1175623A1 (fr) * 1999-04-02 2002-01-30 Lindsey Manufacturing Company Capteur de courant a support isolant
WO2002059628A1 (fr) * 2001-01-22 2002-08-01 Solcon Industries Ltd. Systeme de transformateur electronique
DE10213845A1 (de) * 2002-03-27 2003-10-16 Siemens Ag Anordnung zur elektrischen Energieversorgung eines Verbrauchers mittels einer zweigeteilten Übertragungsstrecke
EP1624311A1 (fr) * 2004-08-06 2006-02-08 Passoni & Villa Fabbrica Isolatori e Condensatori S.p.A. Transformateur de mesures combiné en courant et tension pour condensateur de traverse
WO2006021030A1 (fr) * 2004-08-23 2006-03-02 Fault Detectors Pty Ltd Détection pour ligne d'énergie électrique et ensemble de capteurs
EP1816660A1 (fr) * 2004-11-01 2007-08-08 Ruzhang Wang Transformateur électronique sec isolé combiné organique de sortie de signaux optiques
CN100378462C (zh) * 2003-09-09 2008-04-02 武汉大学 同步采样的多相数字化光电式电流互感器及其测量方法
EP2116854A1 (fr) * 2008-05-08 2009-11-11 Areva T&D Messwandler GmbH Capteur de courant actif et dispositif de mesure du courant
WO2010119353A1 (fr) * 2009-03-24 2010-10-21 Ims Industria De Micro Sistemas Eletronicos Ltda. Capteur électronique pour capter des signaux de tension et des signaux de courant à partir d'un câble sous tension
WO2013058719A2 (fr) * 2011-10-20 2013-04-25 ISKRA SISTEMI, d.d. Circuit et procédé de mesure de la qualité de l'énergie électrique dans un réseau à haute tension
WO2014091233A1 (fr) * 2012-12-12 2014-06-19 The University Of Manchester Appareil et procédé pour surveiller une ligne électrique
WO2016033443A1 (fr) * 2014-08-29 2016-03-03 Tollgrade Communications, Inc. Extraction de puissance pour un capteur de moyenne tension à l'aide d'un diviseur de tension capacitif
US9297837B2 (en) 2012-05-03 2016-03-29 Institut National D'optique Optical sensor for non-contact voltage measurement
US9562925B2 (en) 2012-02-14 2017-02-07 Tollgrade Communications, Inc. Power line management system
US9647454B2 (en) 2011-08-31 2017-05-09 Aclara Technologies Llc Methods and apparatus for determining conditions of power lines
US9678115B2 (en) 2014-05-13 2017-06-13 General Electric Company Contactless voltage sensing devices
RU2624977C1 (ru) * 2016-05-04 2017-07-11 Общество с ограниченной ответственностью "Челэнергоприбор" Преобразователь тока и напряжения высоковольтной сети в цифровой код
US9972989B2 (en) 2014-03-31 2018-05-15 Aclara Technologies Llc Optical voltage sensing for underground medium voltage wires
EP3367111A1 (fr) * 2017-02-28 2018-08-29 Veris Industries, LLC Système de mesure d'énergie
US10649009B2 (en) 2018-03-27 2020-05-12 G & W Electric Company Ungrounded control of low energy analog (LEA) voltage measurements

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117665382B (zh) * 2024-01-31 2024-04-05 季华实验室 一种功率检测电路及功率检测pcb板

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4831327A (en) * 1987-05-01 1989-05-16 Hydro-Quebec Self-powered electrical measuring system isolated from electrical perturbances
EP0409589A2 (fr) * 1989-07-21 1991-01-23 Ngk Insulators, Ltd. Transformateur de courant optique
EP0587491A1 (fr) * 1992-09-10 1994-03-16 Gec Alsthom T Et D Sa Dispositif de mesure utilisant une bobine de Rogowski
WO1996035128A1 (fr) * 1995-05-02 1996-11-07 Abb Research Ltd. Surveillance des decharges partielles internes dans un transformateur de puissance
EP0750382A2 (fr) * 1995-06-23 1996-12-27 Siemens Aktiengesellschaft Dispositif de détection de courant pour le montage sur un conducteur parcouru par le courant
EP0825447A2 (fr) * 1996-08-23 1998-02-25 Asea Brown Boveri AG Appareil de mesure pour une installation blindée à haute tension à isolation de gaz

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4831327A (en) * 1987-05-01 1989-05-16 Hydro-Quebec Self-powered electrical measuring system isolated from electrical perturbances
EP0409589A2 (fr) * 1989-07-21 1991-01-23 Ngk Insulators, Ltd. Transformateur de courant optique
EP0587491A1 (fr) * 1992-09-10 1994-03-16 Gec Alsthom T Et D Sa Dispositif de mesure utilisant une bobine de Rogowski
WO1996035128A1 (fr) * 1995-05-02 1996-11-07 Abb Research Ltd. Surveillance des decharges partielles internes dans un transformateur de puissance
EP0750382A2 (fr) * 1995-06-23 1996-12-27 Siemens Aktiengesellschaft Dispositif de détection de courant pour le montage sur un conducteur parcouru par le courant
EP0825447A2 (fr) * 1996-08-23 1998-02-25 Asea Brown Boveri AG Appareil de mesure pour une installation blindée à haute tension à isolation de gaz

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1175623A4 (fr) * 1999-04-02 2003-01-15 Lindsey Mfg Company Capteur de courant a support isolant
US6555999B1 (en) 1999-04-02 2003-04-29 Lindsey Manufacturing Company Insulator support current sensor
EP1175623A1 (fr) * 1999-04-02 2002-01-30 Lindsey Manufacturing Company Capteur de courant a support isolant
WO2002059628A1 (fr) * 2001-01-22 2002-08-01 Solcon Industries Ltd. Systeme de transformateur electronique
DE10213845A1 (de) * 2002-03-27 2003-10-16 Siemens Ag Anordnung zur elektrischen Energieversorgung eines Verbrauchers mittels einer zweigeteilten Übertragungsstrecke
DE10213845B4 (de) * 2002-03-27 2005-10-20 Siemens Ag Anordnung zur elektrischen Energieversorgung eines Verbrauchers mittels einer zweigeteilten Übertragungsstrecke
US7026728B2 (en) 2002-03-27 2006-04-11 Siemens Aktiengesellschaft System for supplying electrical power to a load by a transmission path which has been split into two parts
CN100378462C (zh) * 2003-09-09 2008-04-02 武汉大学 同步采样的多相数字化光电式电流互感器及其测量方法
EP1624311A1 (fr) * 2004-08-06 2006-02-08 Passoni & Villa Fabbrica Isolatori e Condensatori S.p.A. Transformateur de mesures combiné en courant et tension pour condensateur de traverse
WO2006021030A1 (fr) * 2004-08-23 2006-03-02 Fault Detectors Pty Ltd Détection pour ligne d'énergie électrique et ensemble de capteurs
EP1816660A4 (fr) * 2004-11-01 2007-11-07 Ruzhang Wang Transformateur électronique sec isolé combiné organique de sortie de signaux optiques
EP1816660A1 (fr) * 2004-11-01 2007-08-08 Ruzhang Wang Transformateur électronique sec isolé combiné organique de sortie de signaux optiques
EP2116854A1 (fr) * 2008-05-08 2009-11-11 Areva T&D Messwandler GmbH Capteur de courant actif et dispositif de mesure du courant
WO2010119353A1 (fr) * 2009-03-24 2010-10-21 Ims Industria De Micro Sistemas Eletronicos Ltda. Capteur électronique pour capter des signaux de tension et des signaux de courant à partir d'un câble sous tension
US9647454B2 (en) 2011-08-31 2017-05-09 Aclara Technologies Llc Methods and apparatus for determining conditions of power lines
WO2013058719A2 (fr) * 2011-10-20 2013-04-25 ISKRA SISTEMI, d.d. Circuit et procédé de mesure de la qualité de l'énergie électrique dans un réseau à haute tension
WO2013058719A3 (fr) * 2011-10-20 2013-08-15 ISKRA SISTEMI, d.d. Circuit et procédé de mesure de la qualité de l'énergie électrique dans un réseau à haute tension
US9562925B2 (en) 2012-02-14 2017-02-07 Tollgrade Communications, Inc. Power line management system
US10041968B2 (en) 2012-02-14 2018-08-07 Aclara Technologies Llc Power line management system
US9297837B2 (en) 2012-05-03 2016-03-29 Institut National D'optique Optical sensor for non-contact voltage measurement
WO2014091233A1 (fr) * 2012-12-12 2014-06-19 The University Of Manchester Appareil et procédé pour surveiller une ligne électrique
US9964566B2 (en) 2012-12-12 2018-05-08 The University Of Manchester Power line monitoring apparatus and method
CN104981703A (zh) * 2012-12-12 2015-10-14 曼彻斯特大学 电力线的监视装置和方法
US9972989B2 (en) 2014-03-31 2018-05-15 Aclara Technologies Llc Optical voltage sensing for underground medium voltage wires
US9678115B2 (en) 2014-05-13 2017-06-13 General Electric Company Contactless voltage sensing devices
WO2016033443A1 (fr) * 2014-08-29 2016-03-03 Tollgrade Communications, Inc. Extraction de puissance pour un capteur de moyenne tension à l'aide d'un diviseur de tension capacitif
US10203355B2 (en) 2014-08-29 2019-02-12 Aclara Technologies Llc Power extraction for a medium voltage sensor using a capacitive voltage divider
RU2624977C1 (ru) * 2016-05-04 2017-07-11 Общество с ограниченной ответственностью "Челэнергоприбор" Преобразователь тока и напряжения высоковольтной сети в цифровой код
EP3367111A1 (fr) * 2017-02-28 2018-08-29 Veris Industries, LLC Système de mesure d'énergie
US11215650B2 (en) 2017-02-28 2022-01-04 Veris Industries, Llc Phase aligned branch energy meter
US10649009B2 (en) 2018-03-27 2020-05-12 G & W Electric Company Ungrounded control of low energy analog (LEA) voltage measurements
US10948521B2 (en) 2018-03-27 2021-03-16 G & W Electric Company Ungrounded control of low energy analog (LEA) voltage measurements

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Publication number Publication date
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