GB2350501A - Method and apparatus for monitoring ac circuits - Google Patents
Method and apparatus for monitoring ac circuitsInfo
- Publication number
- GB2350501A GB2350501A GB0022442A GB0022442A GB2350501A GB 2350501 A GB2350501 A GB 2350501A GB 0022442 A GB0022442 A GB 0022442A GB 0022442 A GB0022442 A GB 0022442A GB 2350501 A GB2350501 A GB 2350501A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- divider
- monitoring
- capacitor
- circuits
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
There is provided a method and apparatus for monitoring AC circuits, particularly for monitoring the condition of high voltage circuit breakers. High voltages are measured by connecting an external capacitor (17) between the secondary winding (13) of a current transformer (11) and ground (16), across the removable link (20). This connection, with the link (20) removed, produces a capacitor voltage divider (10) in which the high voltage element of the divider is the stray capacitance (14). The low voltage element of the divider is the external capacitor (17). The voltage on the load and supply side of a circuit breaker is measured using capacitor voltage dividers (10) and the voltage signals are fed to separate inputs on a multi-channel wave-form recording device.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPP1922A AUPP192298A0 (en) | 1998-02-19 | 1998-02-19 | Methods and apparatus for monitoring ac circuits |
PCT/AU1999/000096 WO1999042845A1 (en) | 1998-02-19 | 1999-02-19 | Method and apparatus for monitoring ac circuits |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0022442D0 GB0022442D0 (en) | 2000-11-01 |
GB2350501A true GB2350501A (en) | 2000-11-29 |
GB2350501B GB2350501B (en) | 2002-10-30 |
Family
ID=3806191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0022442A Expired - Fee Related GB2350501B (en) | 1998-02-19 | 1999-02-19 | Method and apparatus for monitoring ac circuits |
Country Status (3)
Country | Link |
---|---|
AU (1) | AUPP192298A0 (en) |
GB (1) | GB2350501B (en) |
WO (1) | WO1999042845A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1557683A2 (en) * | 2004-01-23 | 2005-07-27 | General Electric Company | Methods and apparatus for analyzing high voltage circuit breakers |
CN103424591A (en) * | 2012-05-15 | 2013-12-04 | 苏州工业园区新宏博通讯科技有限公司 | Current sampling circuit for automatic reclosing lock |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6529013B2 (en) | 2001-05-31 | 2003-03-04 | Mcgraw-Edison Company | Three-phase voltage sensor with active crosstalk cancellation |
US6717395B2 (en) * | 2001-05-31 | 2004-04-06 | Mcgraw-Edison Company | Current transformer based high voltage measurement apparatus |
US9455564B2 (en) | 2014-02-21 | 2016-09-27 | General Electric Company | Current and voltage module and methods of monitoring current and voltage in power distribution systems |
CA2976299C (en) | 2015-02-25 | 2023-09-26 | General Electric Technology Gmbh | Improvements in or relating to digital output circuits |
US11137421B1 (en) * | 2020-04-10 | 2021-10-05 | Schneider Electric USA, Inc. | Non-contact voltage sensing system |
CN112083303A (en) * | 2020-07-30 | 2020-12-15 | 中国电力科学研究院有限公司 | Device and method for measuring discharge current of capacitor element during breakdown |
EP4312032A1 (en) * | 2022-07-27 | 2024-01-31 | Hochschule für Angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen | Measuring device for alternating currents and high voltages of physical plasmas |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4689752A (en) * | 1983-04-13 | 1987-08-25 | Niagara Mohawk Power Corporation | System and apparatus for monitoring and control of a bulk electric power delivery system |
US4794327A (en) * | 1983-04-13 | 1988-12-27 | Fernandes Roosevelt A | Electrical parameter sensing module for mounting on and removal from an energized high voltage power conductor |
-
1998
- 1998-02-19 AU AUPP1922A patent/AUPP192298A0/en not_active Abandoned
-
1999
- 1999-02-19 GB GB0022442A patent/GB2350501B/en not_active Expired - Fee Related
- 1999-02-19 WO PCT/AU1999/000096 patent/WO1999042845A1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4689752A (en) * | 1983-04-13 | 1987-08-25 | Niagara Mohawk Power Corporation | System and apparatus for monitoring and control of a bulk electric power delivery system |
US4794327A (en) * | 1983-04-13 | 1988-12-27 | Fernandes Roosevelt A | Electrical parameter sensing module for mounting on and removal from an energized high voltage power conductor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1557683A2 (en) * | 2004-01-23 | 2005-07-27 | General Electric Company | Methods and apparatus for analyzing high voltage circuit breakers |
EP1557683A3 (en) * | 2004-01-23 | 2006-05-17 | General Electric Company | Methods and apparatus for analyzing high voltage circuit breakers |
CN103424591A (en) * | 2012-05-15 | 2013-12-04 | 苏州工业园区新宏博通讯科技有限公司 | Current sampling circuit for automatic reclosing lock |
Also Published As
Publication number | Publication date |
---|---|
GB2350501B (en) | 2002-10-30 |
GB0022442D0 (en) | 2000-11-01 |
AUPP192298A0 (en) | 1998-03-12 |
WO1999042845A1 (en) | 1999-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20050219 |