CN2498614Y - Automatic capacitor online monitor - Google Patents
Automatic capacitor online monitor Download PDFInfo
- Publication number
- CN2498614Y CN2498614Y CN 01245049 CN01245049U CN2498614Y CN 2498614 Y CN2498614 Y CN 2498614Y CN 01245049 CN01245049 CN 01245049 CN 01245049 U CN01245049 U CN 01245049U CN 2498614 Y CN2498614 Y CN 2498614Y
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- China
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- capacitor
- lead
- sensing transducer
- utility
- voltage
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an on-line automatic monitoring plant of a high-voltage parallel capacitor group, comprising a transducer group composed of a plurality of transducers; wherein each transducer is connected with a data collector by a lead; each signal collected by the data collector is sent to a computer device by a lead; and a judge if faults are existed is made by the computer device after processing and analyzing the data. The utility model can realize on-line monitoring the capacitor unit without power cut, saving time and labor, and serious accidents like shell expansion, explosion and inflammation, caused by local short circuit of the capacitor, can be avoided.
Description
The utility model relates to a kind of capacitor fault monitoring device.Specifically, be the online auto monitoring device of high-voltage parallel capacitor group.
Large-scale high-voltage parallel capacitor group in UHV (ultra-high voltage) (220KV and the 500KV) transformer station mostly is to be formed by up to a hundred or hundreds of shnt capacitor unit combination.In long operational process, because the built-in electrical insulation thin spot, medium is aging and exterior overvoltage, temperature variation, influence such as switching repeatedly, the individual capacitors unit can break down unavoidably.In case the individual capacitors unit breaks down, will cause the localized capacitance value to change, thereby cause the imbalance of the idle output of three-phase.When serious, also can expand owing to partial short-circuit causes capacitor case, in addition blast, major accident such as burning.
At present, the high-voltage parallel capacitor group generally adopts with fuse as prime, the relay protection passive protection mode as the back level.Adopt this protected mode,,, therefore, still can not stop the generation of major accident so have only fault progression just can move to comparatively serious degree when capacitor unit because the rated current of fuse is 1.5～2 times of the capacitor rated current.Avoid the generation of accident, just need regularly inspections that have a power failure of capacitor group, time-consuming, require great effort.
The purpose of this utility model is to provide a kind of capacitor online auto monitoring device.Use this capacitor online auto monitoring device, save time, laborsaving, can also stop the shell expansion that causes because of the capacitor partial short-circuit and the generation of major accidents such as blast, burning.
Above-mentioned purpose of the present utility model is realized by following technical solution:
Capacitor online auto monitoring device of the present utility model comprises the sensing transducer group that is made of some sensing transducers, and sensing transducer is made up of current sensor, voltage sensor, temperature sensor and transmitter thereof.During said some sensing transducers work, join with some capacitor units correspondingly, being used to detect corresponding physical quantity on the capacitor unit, and change this physical quantity into voltage analog by lead.Each sensing transducer all links to each other with data acquisition unit by lead, after being given computer installation and carry out data processing and analyze by lead again by each road signal of data acquisition unit collection, makes capacitor unit by computing machine again and whether has failure judgment.
Adopt such scheme, have the following advantages:
Because the some capacitor units in the high-voltage parallel capacitor group are connected with the sensing transducer of capacitor online auto monitoring device of the present utility model correspondingly, detect corresponding physical quantity on the capacitor unit by sensing transducer, and this physical quantity is transformed into voltage analog.This voltage analog is given computing machine and is carried out data processing and analysis after being gathered by data acquisition unit, by computing machine each capacitor unit is made whether there is failure judgment again.Need not have a power failure, can realize on-line monitoring, save time, laborsaving, and the shell expansion and the major accidents such as blast, burning that cause because of the capacitor partial short-circuit can not occur capacitor unit.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Accompanying drawing is a capacitor online auto monitoring principle of device synoptic diagram of the present utility model.
As shown in drawings, capacitor online auto monitoring device of the present utility model comprises sensing transducer group 4.This sensing transducer group is made up of some sensing transducers 3.Under the duty, some sensing transducers 3 are connected with some capacitor units 2 in the high-voltage parallel capacitor group 1 correspondingly by lead.Sensing transducer 3 wherein comprises current sensor, voltage sensor, temperature sensor and transmitter thereof, and its effect is to be used for detecting corresponding physical quantity on the capacitor unit 2, and these physical quantitys are become voltage analog.Current sensor wherein is used to detect the current value that flows through each capacitor unit 2; Voltage sensor is used for detecting the magnitude of voltage of high-voltage parallel capacitor group 4 each series block; Temperature sensor then is used to detect the temperature on some privileged site capacitor unit 2 shell.Each sensing transducer 3 all links to each other with data acquisition unit 5 by lead, by data acquisition unit 5 receptions each road signal from sensing transducer 3, under the control of computer installation 6, by the program of setting, to sampling successively, and give computer installation 6 with the signal conveys that sampling obtains from the signal of sensing transducer 3.
Said computer installation 6 is made up of hardware and software two parts.Hardware components wherein mainly is made of IO channel, man-machine interface and main frame.Input channel will convert digital quantity to from the voltage analog of data acquisition unit 5, flow to main frame.Output channel is used to export the control signal and the alerting signal of main frame.Adjunction one warning device 7 on the output channel of computing machine, being used for when the fault-signal, by this warning device send sound, light shows.Said warning device 7 is made of relay, sound and light display etc., and it can be reported to the police to the duty personnel, can also delay the trip signal that sends high-voltage parallel capacitor group 1 when certain, to avoid the further expansion of fault.Man-machine interface comprises equipment such as demonstration, operation, record and storage so that operating personnel install loading routine, preset parameter, deposit program data file with this, and in system's operational process, monitor, adjustment etc.Software is made up of system software and application software.Main frame can carry out data processing and analysis according to programmed instruction, makes whether each capacitor exists failure judgment in the capacitor group, and these information is sent into man-machine interface store and show.If fault surpasses predetermined threshold value, then send alerting signal to warning device 7 by output channel.Main frame can also send sampling control signal by output channel to data acquisition unit 5 according to programmed instruction.
During the utility model work, detect the physical quantitys such as electric current, voltage and temperature of all capacitor units 2 earlier by sensing transducer group 4, and they are become voltage signal.Again by data acquisition unit 5 follow procedures successively to sampling from the voltage signal of sensing transducer group 4, and by input channel, the sampled signal of data acquisition unit 5 carried out the A/D conversion after, flow to computer installation 6.After the data of input channel being sent here by the main frame in the computer installation 6 are calculated, with calculate gained each capacitor unit 2 parameter with put into operation before compare one by one via the initial parameter of the capacitor unit 2 of man-machine interface input, and contrast the predefined threshold value that allows to depart from, judge whether capacitor unit 2 exists fault.Each The results of data processing all can store, show.At last,, deliver to warning device 7, send acousto-optic by warning device 7 and show through output channel through the fault-signal that main frame is judged.If be necessary, can also behind a fixed response time, send the trip signal of high-voltage parallel capacitor group 1.Like this, by on-line monitoring, can monitor and analyze the service data of high-voltage parallel capacitor group at any time, whether diagnosis in good time wherein each capacitor unit 2 exists fault, can effectively avoid the generation of major accident.
Claims (2)
1. capacitor online auto monitoring device is characterized in that comprising the sensing transducer group (4) that is made of some sensing transducers (3), and sensing transducer (3) is made up of current sensor, voltage sensor, temperature sensor and transmitter thereof; Each sensing transducer (3) all links to each other with data acquisition unit (5) by lead, give computer installation (6) by lead again by each road signal that data acquisition unit (5) is gathered, after carrying out data processing and analyze by computer installation (6), make whether there is failure judgment.
2. capacitor online auto monitoring device according to claim 1 is characterized in that the output terminal of computer installation (6) is connected to warning device (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245049 CN2498614Y (en) | 2001-07-24 | 2001-07-24 | Automatic capacitor online monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245049 CN2498614Y (en) | 2001-07-24 | 2001-07-24 | Automatic capacitor online monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2498614Y true CN2498614Y (en) | 2002-07-03 |
Family
ID=33656361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01245049 Expired - Fee Related CN2498614Y (en) | 2001-07-24 | 2001-07-24 | Automatic capacitor online monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2498614Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035184A (en) * | 2011-01-17 | 2011-04-27 | 青岛市恒顺电气股份有限公司 | Capacitor intelligent device and monitoring method thereof |
| CN102707129A (en) * | 2012-04-20 | 2012-10-03 | 北京诺德威电力技术开发有限责任公司 | Current sensing device |
| CN103229065A (en) * | 2010-09-30 | 2013-07-31 | 施耐德电气美国股份有限公司 | Systems, methods, and devices for monitoring a capacitor bank |
| CN103529336A (en) * | 2013-10-30 | 2014-01-22 | 中冶华天工程技术有限公司 | Optical fiber sensor based power capacitor bank failure prediction system |
| CN104155900A (en) * | 2014-08-07 | 2014-11-19 | 安徽富煌电控设备有限公司 | Capacitor on-line monitoring control device for high pressure power distribution system |
| CN104535907A (en) * | 2014-12-19 | 2015-04-22 | 深圳市众能达自动化设备有限公司 | Detecting device for capacitor internal explosion |
| CN110618332A (en) * | 2019-09-27 | 2019-12-27 | 华中科技大学 | Capacitor temperature rise measuring method and system based on heat flow measurement |
-
2001
- 2001-07-24 CN CN 01245049 patent/CN2498614Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103229065A (en) * | 2010-09-30 | 2013-07-31 | 施耐德电气美国股份有限公司 | Systems, methods, and devices for monitoring a capacitor bank |
| US10330725B2 (en) | 2010-09-30 | 2019-06-25 | Schneider Electric USA, Inc. | Systems, methods, and devices for monitoring a capacitor bank |
| CN102035184A (en) * | 2011-01-17 | 2011-04-27 | 青岛市恒顺电气股份有限公司 | Capacitor intelligent device and monitoring method thereof |
| CN102707129A (en) * | 2012-04-20 | 2012-10-03 | 北京诺德威电力技术开发有限责任公司 | Current sensing device |
| CN103529336A (en) * | 2013-10-30 | 2014-01-22 | 中冶华天工程技术有限公司 | Optical fiber sensor based power capacitor bank failure prediction system |
| CN103529336B (en) * | 2013-10-30 | 2016-04-13 | 中冶华天工程技术有限公司 | Based on the power capacitor bank failure prediction system of Fibre Optical Sensor |
| CN104155900A (en) * | 2014-08-07 | 2014-11-19 | 安徽富煌电控设备有限公司 | Capacitor on-line monitoring control device for high pressure power distribution system |
| CN104535907A (en) * | 2014-12-19 | 2015-04-22 | 深圳市众能达自动化设备有限公司 | Detecting device for capacitor internal explosion |
| WO2016095829A1 (en) * | 2014-12-19 | 2016-06-23 | 深圳市众能达自动化设备有限公司 | Detection device for internal explosion of capacitor |
| CN104535907B (en) * | 2014-12-19 | 2017-11-07 | 深圳市众能达自动化设备有限公司 | Electric capacity internal explosion detection means |
| CN110618332A (en) * | 2019-09-27 | 2019-12-27 | 华中科技大学 | Capacitor temperature rise measuring method and system based on heat flow measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |