EP2480901A1 - Transformateur de mesure équipé d'un transformateur électrique et d'un capteur - Google Patents

Transformateur de mesure équipé d'un transformateur électrique et d'un capteur

Info

Publication number
EP2480901A1
EP2480901A1 EP10771350A EP10771350A EP2480901A1 EP 2480901 A1 EP2480901 A1 EP 2480901A1 EP 10771350 A EP10771350 A EP 10771350A EP 10771350 A EP10771350 A EP 10771350A EP 2480901 A1 EP2480901 A1 EP 2480901A1
Authority
EP
European Patent Office
Prior art keywords
transducer
voltage
sensor
electrical
current
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.)
Withdrawn
Application number
EP10771350A
Other languages
German (de)
English (en)
Inventor
Udo Prucker
Martin Schumacher
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2480901A1 publication Critical patent/EP2480901A1/fr
Withdrawn legal-status Critical Current

Links

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
    • G01R15/08—Circuits for altering the measuring range
    • 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
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase AC
    • H01F38/24—Voltage transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase AC
    • H01F38/28—Current transformers
    • 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
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core

Definitions

  • the invention relates to a measuring transducer with an electrical converter, wherein the electrical converter is connected to an electrical ground by means of a grounding line.
  • Instrument transformers have been implemented for decades in electrical energy supply networks, in particular high-voltage networks, for measuring current and voltage.
  • Function of the transducer is to transform the conversion of high currents and / or voltages within the high-voltage network in such a power relationship be ⁇ as voltage values which are suitable for measurement or monitoring of the high voltage network.
  • the use of corresponding inductors and / or capacitors for the design of a transducer may result in unwanted network feedbacks.
  • the non-linear inductance of the primary winding of a clamping ⁇ voltage converter with the capacity of a corresponding high-voltage network may form a nonlinear oscillating circuit under certain operating conditions or network configurations.
  • this resonant circuit can be excited to non-linear, also referred to as Ferroresonanz- or tilt oscillations, oscillations.
  • non-linear also referred to as Ferroresonanz- or tilt oscillations, oscillations.
  • one-phase ferro- resonance oscillations are possible as well as, in high-impedance earthed networks, three-phase ferroresonant vibrations.
  • Both processes lead to a failure of the transducer due to a thermal destruction of the insulation of the voltage transformer primary winding to a failure of the transducer with an appropriate duration.
  • Standard mains protection devices are designed for fault detection in the load and short-circuit current ranges. The small currents of the oscillations between mains and voltage transformers are far below the measuring threshold of these devices.
  • a further disadvantage is that a change in the network configuration, for example the replacement or the installation of further branches, and an associated change in the high-voltage network parameters can result in a change in the resonance conditions and, as a result, in turn, if necessary, ferroresonance oscillating circuits.
  • this problem was solved by evaluating the mostly used voltage transformers with regard to the secondary voltages or currents applied to the secondary winding, for example by means of a Fourier analysis of the secondary voltages or currents. In the presence of certain frequencies, the measuring voltage of the voltage converter can be closed to a voltage transformer hazard.
  • Wagging modes are also described in DE 15 16 136 and DE 1154570, but these involve possible relaxation oscillations within the device and not to a Wech ⁇ sel Titan to the high voltage network.
  • the strength and testing of these internal overturning oscillations is regulated in the standard for capacitive voltage transformers.
  • a disadvantage of all solutions in the prior art is that rapid detection and reporting of a ferroresonant oscillation during operation of the switchgear is not provided in order to give the operator an opportunity to leave the critical operating state or to avoid it in the future.
  • a sensor is arranged on the grounding line. This makes it possible that the corresponding current level in the transducer of the transducer, which may be connected to the grounding line, is evaluated directly. In the case of a resulting ferroresonant oscillation, the corresponding change in the current can thus be detected directly within the electrical transducer of the measuring wall ⁇ lers and thus evaluated.
  • a complex sto ⁇ reitung and evaluation of various indicators, such examples For example, the evaluation in the secondary winding of the transducer induced electrical currents can thus entfal ⁇ len.
  • this has the advantage that the sensor can be used to measure the current Mes through the converter without the grounding conditions of the converter are changed.
  • the grounding line is electrically insulated from the housing.
  • the housing is gas and / or oil and / or solids insulated.
  • the housing can either only surround the transducer, whereby the sensor can be arranged inside and / or outside the housing.
  • the housing may be a gas-insulated switchgear ⁇ or implementation in which the transducer is integrated.
  • the sensor as a current sensor is advantageously arranged annularly around the grounding line, wherein advantageously in particular the primary winding of a voltage converter is connected to the grounding line.
  • the converter is a voltage converter with a primary winding, a secondary winding and a winding core. This voltage converter is designed in particular one or three-phase.
  • the converter is a
  • An evaluation unit is in an advantageous embodiment of the transducer with the sensor, in particular current sensor, Connects and detects corresponding currents of the earth wire connected to the transducer.
  • the sensor in particular current sensor
  • the grounding line is advantageously connected to the primary winding.
  • the measured winding currents are logged and / or archived by the evaluation device. These logged winding currents can be linked to other network parameters and thus provide a human operator with valuable additional information about an operating state of the voltage network in the past.
  • Fig. 1 is a schematic circuit diagram with a transducer
  • FIG. 2 shows a schematic circuit diagram with a measuring transducer and one connected to the housing
  • Grounding line of the primary winding of the voltage converter as a connection via the wall of the housing to the electrical ground with an internal current sensor;
  • 3 shows a schematic circuit diagram with a measuring transducer and a sensor arranged outside a gas-insulated housing;
  • Fig. 4 is a schematic circuit diagram with a transducer and a connected to the housing
  • Fig. 1 shows a transducer 1 with a converter 2, which consists of a primary winding 3, a winding core 4 and a secondary winding 5.
  • the transducer 2 is arranged within a housing 13.
  • the embodiments of the housing 13 are executed isolated by bushings 9.
  • To a three-phase high-voltage network 10 by way of example kapaziti ⁇ ve couplings 14 are shown within the network 10 and to the electrical ground 8, which may lead to a ferro-resonant vibration at certain operating conditions and network configurations.
  • the grounding line 11 of the primary winding 3 of the voltage converter 2 is guided and connected directly to the electrical ground 8.
  • the current sensor 6 is connected directly to an evaluation device 7.
  • the evaluation device 7 can then enter appropriate action within the high voltage network 10 and in the wiring of Se ⁇ kundärwicklung 5 of the voltage converter 2 freely.
  • the evaluation device 7 makes a corresponding change in the disconnector configuration of the high-voltage network 10 or connects a Dämpfungseinrich ⁇ device.
  • Fig. 2 shows, in contrast to FIG. 1 a connected to the GeHou ⁇ se 13 ground line 11 of the primary winding 3 of the transformer 2 as the voltage converter, to which a corresponding current sensor 6 is disposed within the housing 13.
  • the current sensor 6 is connected to the evaluation device 7 via a feedthrough.
  • the grounding path 11 of the measuring circuit extends in the example shown in FIG.
  • FIG. 3 shows a transducer 1 with a voltage converter ⁇ ler than converter 2, which consists of the primary winding 3, the winding core 4 and the secondary winding 5.
  • the transducer 2 is disposed within a housing 13 for a gas-insulated switch ⁇ system.
  • the embodiments of the housing 13 of the gas-insulated switchgear are limited by gas-tight connections 9.
  • the primary winding 3 of the converter 2 is by means of the grounding line 11 directly to the electrical ground. 8 connected and in the grounding line 11, a current sensor 6 is arranged, which is connected to an evaluation device 7.
  • example ⁇ conceivable that the evaluation device 7 is a corresponding change in the operating conditions and / or the network configuration of the high-voltage network 10, such as the triggering of a defined electrical switching operation and / or the switching of a damping device and / or changing a disconnector configuration performs.
  • FIG. 4 shows, in contrast to FIG. 1 a connected to the GePFu ⁇ se 13 ground line 11 of a gas insulated
  • the grounding path 11 extends in the example shown in FIG. 4 undergraduate the direct connection of a secondary circuit resistor (shunt) as a converter 2 with the Genzousewan ⁇ dung and a corresponding connecting line as part of the grounding line 11 8 to electrical ground, the evaluation device 7 has setting functions on, which allow an unmit ⁇ direct influence on the high voltage network 10.
  • the evaluation device 7 controls a network component 12 in the form of a circuit breaker 12 within the gas-insulated housing 13. In the case of the detection of a ferroresonant oscillation, the evaluation device 7 can directly control the network component 12; here open or close the circuit breaker 12.

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)
  • Transformers For Measuring Instruments (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

L'invention concerne un transformateur de mesure équipé d'un transformateur électrique mis à la terre électrique par l'intermédiaire d'un conducteur de mise à la terre. La mise à la terre électrique d'un enroulement primaire d'un transformateur de tension par l'intermédiaire du conducteur de mise à la terre et l'utilisation d'un capteur sur ce dernier permettent de détecter de manière rapide et fiable des oscillations de ferro-résonance à l'intérieur du transformateur de mesure.
EP10771350A 2009-09-25 2010-08-23 Transformateur de mesure équipé d'un transformateur électrique et d'un capteur Withdrawn EP2480901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009043596A DE102009043596A1 (de) 2009-09-25 2009-09-25 Messwandler mit einem elektrischen Wandler
PCT/EP2010/062250 WO2011036007A1 (fr) 2009-09-25 2010-08-23 Transformateur de mesure équipé d'un transformateur électrique et d'un capteur

Publications (1)

Publication Number Publication Date
EP2480901A1 true EP2480901A1 (fr) 2012-08-01

Family

ID=43277475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10771350A Withdrawn EP2480901A1 (fr) 2009-09-25 2010-08-23 Transformateur de mesure équipé d'un transformateur électrique et d'un capteur

Country Status (5)

Country Link
EP (1) EP2480901A1 (fr)
KR (1) KR101325844B1 (fr)
CN (1) CN102576039A (fr)
DE (1) DE102009043596A1 (fr)
WO (1) WO2011036007A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680759A (zh) * 2012-05-30 2012-09-19 江苏科兴电器有限公司 基于链式电容器阻容分压的电子式互感器
CN102693840A (zh) * 2012-05-30 2012-09-26 江苏科兴电器有限公司 链式电容器
DE102017217783A1 (de) 2017-10-06 2019-04-11 Siemens Aktiengesellschaft Anordnung zum Anschluss an ein Hochspannungsnetz
EP3699606B1 (fr) 2019-02-22 2025-12-24 ABB Schweiz AG Circuit de protection pour transformateur de tension moyenne ou haute tension
DE102019211948A1 (de) 2019-08-08 2021-02-11 Siemens Energy Global GmbH & Co. KG Schutz eines Wechselstromgeräts

Citations (2)

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SU1704214A1 (ru) * 1989-12-04 1992-01-07 Завод Высоковольтной Аппаратуры Производственного Объединения "Запорожтрансформатор" Им.В.И.Ленина Устройство дл защиты электрооборудовани высокого напр жени от перенапр жений
EP0906846A1 (fr) * 1997-03-31 1999-04-07 Mitsubishi Denki Kabushiki Kaisha Appareil de commande de convertisseur a modulation d'impulsions en largeur

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DE1154570B (de) 1958-07-16 1963-09-19 Siemens Ag Kapazitiver Spannungswandler
NL135716C (fr) 1966-03-18
DE2115063A1 (de) * 1971-03-25 1972-10-05 Siemens Ag Spannungswandler
DE2124345C3 (de) * 1971-05-17 1978-10-19 Friedrich Dr.-Ing.E.H. 8600 Bamberg Raupach Transformator zur Erzeugung oder Messung hoher und höchster Spannungen oder zur Messung von Strömen auf Hochspannungspotential in Kaskadenschaltung
US4868729A (en) * 1982-02-16 1989-09-19 Canon Kabushiki Kaisha Power supply unit
US4466041A (en) * 1983-02-01 1984-08-14 Storage Technology Corporation Fault protection system for power supplies that use ferro-resonant transformers
DD224157A1 (de) * 1984-05-17 1985-06-26 Elektro App Werke Veb Schaltungsanordnung zur erdschlussrichtungserfassung
DE3445898A1 (de) * 1984-12-15 1986-06-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur kompensation von stoerkapazitaeten zwischen einem widerstand und einer elektrisch leitenden abschirmelektrode
KR920003586Y1 (ko) * 1990-04-14 1992-05-30 주식회사 금성사 마그네트론 구동 전원회로
JPH0959005A (ja) * 1995-08-25 1997-03-04 Meidensha Corp オゾン発生装置の放電管破壊監視装置
GB0010720D0 (en) * 2000-05-03 2000-06-28 Ghassemi Foroozan Power quality sensors for conventional capacitor coupled voltage transformers
DE10134014A1 (de) * 2001-07-12 2003-01-30 Driescher Eltech Werk Stromwandler
EP1906190B1 (fr) * 2005-06-13 2009-01-07 Ormazabal Protection & Automation, S.L. Dispositif de commande/de protection pour reseaux de distribution electrique
JP2007057471A (ja) * 2005-08-26 2007-03-08 Gs Yuasa Corporation:Kk 絶縁監視方法及び絶縁監視装置
DE102007005748A1 (de) * 2007-02-01 2008-08-07 Siemens Ag Vorrichtung zum Überwachen von Ableitvorgängen in einem Leiter eines Mittel- oder Hochspannungssystems
FR2915632B1 (fr) * 2007-04-24 2009-06-26 Transfix Toulon Sa Sa Soc Nouv Procede et dispositif de protection electrique des liaisons avales d'un transformateur, ainsi que poste de transformation equipe d'un tel dispositif

Patent Citations (2)

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SU1704214A1 (ru) * 1989-12-04 1992-01-07 Завод Высоковольтной Аппаратуры Производственного Объединения "Запорожтрансформатор" Им.В.И.Ленина Устройство дл защиты электрооборудовани высокого напр жени от перенапр жений
EP0906846A1 (fr) * 1997-03-31 1999-04-07 Mitsubishi Denki Kabushiki Kaisha Appareil de commande de convertisseur a modulation d'impulsions en largeur

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ADOLF I NAZAROV ET AL: "DEVICE TO PROTECT HIGH-VOLTAGE ELECTRICAL EQUIPMENT AGAINST OVERVOLTAGE", SU1704214, 7 January 1992 (1992-01-07), pages 1 - 3, XP055159163, Retrieved from the Internet <URL:http://patentdb.su/3-1704214-ustrojjstvo-dlya-zashhity-ehlektrooborudovaniya-vysokogo-napryazheniya-ot-perenapryazhenijj.html> [retrieved on 20141217] *
DATABASE WPI Week 199246, Derwent World Patents Index; AN 1992-380430 *
See also references of WO2011036007A1 *

Also Published As

Publication number Publication date
KR101325844B1 (ko) 2013-11-08
WO2011036007A1 (fr) 2011-03-31
DE102009043596A1 (de) 2011-03-31
CN102576039A (zh) 2012-07-11
KR20120048696A (ko) 2012-05-15

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