AU2001252402A1 - Capacitor coupled voltage transformers - Google Patents

Capacitor coupled voltage transformers

Info

Publication number
AU2001252402A1
AU2001252402A1 AU2001252402A AU5240201A AU2001252402A1 AU 2001252402 A1 AU2001252402 A1 AU 2001252402A1 AU 2001252402 A AU2001252402 A AU 2001252402A AU 5240201 A AU5240201 A AU 5240201A AU 2001252402 A1 AU2001252402 A1 AU 2001252402A1
Authority
AU
Australia
Prior art keywords
pqcs
capacitor coupled
voltage transformers
coupled voltage
capacitor
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.)
Abandoned
Application number
AU2001252402A
Inventor
Foroozan Ghassemi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU2001252402A1 publication Critical patent/AU2001252402A1/en
Abandoned 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
    • G01R15/04—Voltage dividers
    • G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
    • 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
    • G01R15/16—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Amplifiers (AREA)

Abstract

Accurate harmonic measurements on electrical power systems where the main instrument transformers are of the capacitor coupled voltage type (CVT type) is made possible by the provision of one or more current sensors (PQCS 1 , PQCS 2 ). CVTs typically have a high voltage capacitor bank (CH) and a low voltage capacitor bank (CL). One or more current sensors (PQCS 1 , PQCS 2 ) is/are positioned so as to measure capacitor current and from that the input voltage (Vin) of the CVT can be determined for each frequency.
AU2001252402A 2000-05-03 2001-05-03 Capacitor coupled voltage transformers Abandoned AU2001252402A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0010720 2000-05-03
GBGB0010720.1A GB0010720D0 (en) 2000-05-03 2000-05-03 Power quality sensors for conventional capacitor coupled voltage transformers
PCT/GB2001/001950 WO2001084164A1 (en) 2000-05-03 2001-05-03 Capacitor coupled voltage transformers

Publications (1)

Publication Number Publication Date
AU2001252402A1 true AU2001252402A1 (en) 2001-11-12

Family

ID=9890919

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001252402A Abandoned AU2001252402A1 (en) 2000-05-03 2001-05-03 Capacitor coupled voltage transformers

Country Status (9)

Country Link
US (1) US6919717B2 (en)
EP (1) EP1295133B1 (en)
AT (1) ATE272217T1 (en)
AU (1) AU2001252402A1 (en)
CA (1) CA2446275A1 (en)
DE (1) DE60104550T2 (en)
ES (1) ES2225523T3 (en)
GB (2) GB0010720D0 (en)
WO (1) WO2001084164A1 (en)

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US20080042637A1 (en) * 2006-08-18 2008-02-21 Honeywell International Inc. Magnetic toroid self resonant current sensor
US8213197B1 (en) * 2006-09-05 2012-07-03 Marvell International Ltd. Switching capacitor power supply
CN100446047C (en) * 2007-02-09 2008-12-24 河海大学常州校区 Circuit device and working method of grid harmonic wireless detector
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US8575941B2 (en) * 2009-09-08 2013-11-05 Schweitzer Engineering Laboratories Inc Apparatus and method for identifying a faulted phase in a shunt capacitor bank
DE102009043596A1 (en) * 2009-09-25 2011-03-31 Siemens Aktiengesellschaft Instrument transformer with an electrical transducer
CN101819868B (en) * 2010-05-04 2011-11-30 中国电力科学研究院 Extra-high-voltage equal potential shielded capacitor voltage transformer
US8878391B2 (en) 2012-01-10 2014-11-04 Schweitzer Engineering Laboratories, Inc System, apparatus, and method for reducing inrush current in a three-phase transformer
US9008982B2 (en) * 2012-03-09 2015-04-14 Schweitzer Engineering Laboratories, Inc. Systems and methods for determining residual flux in a power transformer
JP5935554B2 (en) * 2012-07-06 2016-06-15 三菱電機株式会社 Iron resonance prevention device and receiving / transforming equipment using the same
WO2014087469A1 (en) * 2012-12-03 2014-06-12 三菱電機株式会社 Voltage detection device
CN103344853A (en) * 2013-06-24 2013-10-09 国家电网公司 Method for judging faults of parallel capacitors by means of natural vibration frequency
CN103389403B (en) * 2013-07-26 2015-11-04 武汉大学 A Filter-Based Method for Harmonic Voltage Measurement of High-Voltage AC System
CN103364604B (en) * 2013-07-30 2016-06-29 武汉大学 Capacitance type potential transformer and measuring method suitable in high-voltage harmonic measurement
EP2853903B1 (en) * 2013-09-27 2016-09-14 Siemens Aktiengesellschaft A high voltage divider
CN107743589B (en) * 2015-03-20 2020-04-14 Abb瑞士股份有限公司 High voltage measurement unit with self-calibration
CN106291434B (en) * 2016-10-26 2023-04-18 广东电网有限责任公司揭阳供电局 Method and system for monitoring primary grounding state of capacitive voltage transformer
US10802054B2 (en) 2017-09-22 2020-10-13 Schweitzer Engineering Laboratories, Inc. High-fidelity voltage measurement using a capacitance-coupled voltage transformer
US11105832B2 (en) * 2017-09-22 2021-08-31 Schweitzer Engineering Laboratories, Inc. High-fidelity voltage measurement using a capacitance-coupled voltage transformer
US11038342B2 (en) 2017-09-22 2021-06-15 Schweitzer Engineering Laboratories, Inc. Traveling wave identification using distortions for electric power system protection
EP3685174A1 (en) 2017-09-22 2020-07-29 Schweitzer Engineering Laboratories, Inc. High-fidelity voltage measurement using resistive divider in a capacitance-coupled voltage transformer
CN109270481B (en) * 2018-09-14 2020-12-25 国网新疆电力有限公司电力科学研究院 Transformer substation capacitive voltage transformer model testing method containing reactive compensation branch
CN109406877B (en) * 2018-09-28 2021-07-06 国网江苏省电力有限公司常州供电分公司 Method and device for measuring harmonic transfer coefficient of capacitive voltage transformer
WO2020097933A1 (en) * 2018-11-16 2020-05-22 Abb Schweiz Ag Voltage sensor and apparatus
CN109521387B (en) * 2018-12-07 2021-11-02 国网江苏省电力有限公司常州供电分公司 Method and system for obtaining harmonic transfer characteristics of capacitive voltage transformer
EP3675345A1 (en) 2018-12-31 2020-07-01 Solaredge Technologies Ltd. Balanced capacitor power converter
CN109839531A (en) * 2019-02-19 2019-06-04 国网陕西省电力公司电力科学研究院 A kind of capacitance type potential transformer and its Transmission Characteristics system and operating method
CN109839536B (en) * 2019-02-21 2020-12-04 国网福建省电力有限公司龙岩供电公司 A device for measuring and judging CVT harmonics in substations
US11187727B2 (en) 2019-04-29 2021-11-30 Schweitzer Engineering Laboratories, Inc. Capacitance-coupled voltage transformer monitoring
US11650264B2 (en) * 2019-04-29 2023-05-16 Schweitzer Engineering Laboratories, Inc. Capacitance-coupled voltage transformer monitoring
CN110196356A (en) * 2019-05-17 2019-09-03 国网陕西省电力公司电力科学研究院 Passive type dielectric spectroscopy on-line measurement analysis system and method
CN110361686B (en) * 2019-08-28 2021-05-18 华北电力大学（保定） Multi-parameter-based fault detection method for capacitive voltage transformer
CN110907701B (en) * 2019-10-25 2023-12-12 中国电力科学研究院有限公司 Capacitive voltage transformer with harmonic measurement function
US11476655B2 (en) 2020-01-14 2022-10-18 Schweitzer Engineering Laboratories, Inc. Trapped charge estimation
US11575253B2 (en) 2020-05-12 2023-02-07 Schweitzer Engineering Laboratories, Inc. Controlled three-pole close for transmission lines
AU2021307068B2 (en) * 2020-07-13 2024-02-15 Omicron Electronics Gmbh Method and apparatus for determining a state of a capacitive voltage transformer
US11592498B2 (en) 2020-10-02 2023-02-28 Schweitzer Engineering Laboratories, Inc. Multi-phase fault identification in capacitor banks
US11233389B1 (en) 2020-10-30 2022-01-25 Schweitzer Engineering Laboratories, Inc. Controlled three-pole close for transformers
US11996688B2 (en) 2021-05-12 2024-05-28 Schweitzer Engineering Laboratories, Inc. Method of controlled switching for transformers using transformer residual flux
CN115112934A (en) * 2021-11-11 2022-09-27 重庆大学 Harmonic and transient voltage measurement method based on broadband model of capacitive voltage transformer
CN113917384B (en) * 2021-11-12 2024-08-16 国网河南省电力公司电力科学研究院 Estimation Method of Output Harmonic Parameters of Capacitor Voltage Transformer
CN115219975B (en) * 2022-07-07 2023-04-11 中广核新能源安徽有限公司 Device and method for measuring and correcting harmonic error of capacitor voltage transformer
US12316112B2 (en) 2022-07-12 2025-05-27 Schweitzer Engineering Laboratories, Inc. Breaker control units and related systems and methods
US12308635B2 (en) 2022-08-01 2025-05-20 Schweitzer Engineering Laboratories, Inc. Unbalance protection for shunt capacitor banks
CN115389805B (en) * 2022-09-02 2024-03-19 哈尔滨工业大学 Series-parallel CVT broadband measurement system based on optical voltage sensor

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US3870926A (en) * 1970-12-18 1975-03-11 English Electric Co Ltd Capacitor voltage transformer system
US3870927A (en) * 1971-06-08 1975-03-11 English Electric Co Ltd Capacitor voltage transformer system
CA1014615A (en) * 1972-11-09 1977-07-26 Howard R. Lucas Protective system for a capacitor voltage transformer
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CH660923A5 (en) * 1982-10-29 1987-05-29 Bbc Brown Boveri & Cie DEVICE FOR MEASURING THE VOLTAGE OF A HIGH VOLTAGE CONDUCTOR.
US4914382A (en) * 1987-10-14 1990-04-03 Hydro-Quebec High voltage measuring circuit coupled to the capacitive grounding tap bushing of an HV device
SE460804B (en) * 1988-03-25 1989-11-20 Asea Brown Boveri PROCEDURE AND DEVICE FOR MISCELLANEOUS FAULTY ON A POWER CORD
DE4121654A1 (en) * 1991-06-29 1993-01-07 Asea Brown Boveri COMBINED CURRENT AND VOLTAGE CONVERTER FOR A METAL-ENCLOSED GAS-INSULATED HIGH-VOLTAGE SYSTEM
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DE19713916B4 (en) * 1997-04-04 2014-08-28 Abb Schweiz Ag Capacitive voltage converter for a metal-enclosed, gas-insulated high-voltage system

Also Published As

Publication number Publication date
CA2446275A1 (en) 2001-11-08
WO2001084164A1 (en) 2001-11-08
ATE272217T1 (en) 2004-08-15
GB0228213D0 (en) 2003-01-08
EP1295133A1 (en) 2003-03-26
GB0010720D0 (en) 2000-06-28
DE60104550D1 (en) 2004-09-02
ES2225523T3 (en) 2005-03-16
EP1295133B1 (en) 2004-07-28
US20030164714A1 (en) 2003-09-04
US6919717B2 (en) 2005-07-19
DE60104550T2 (en) 2005-07-28

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