CN2519960Y - Computer device for capacitor on-line monitoring - Google Patents
Computer device for capacitor on-line monitoring Download PDFInfo
- Publication number
- CN2519960Y CN2519960Y CN 01245051 CN01245051U CN2519960Y CN 2519960 Y CN2519960 Y CN 2519960Y CN 01245051 CN01245051 CN 01245051 CN 01245051 U CN01245051 U CN 01245051U CN 2519960 Y CN2519960 Y CN 2519960Y
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Abstract
The utility model discloses a computer device for online monitoring for a capacitor, comprising an input channel, an output channel, a bus, a host computer and a human-machine connection device. The A/D converter arranged in the input channel is connected with a host computer through a relaying signal amplifier, an input interface and a bus in sequence. One interface of the output channel is connected with a data collector; the other interface is connected with an alarming device through a switching signal amplifier. The two interfaces are both connected with the bus. A display, a manipulator, a recording device and a memory, which are arranged in the human-machine connection device, are respectively connected with the bus through the interface. Therefore, the utility model has the advantages that the occurrence of major accident can be eliminated by that the signal, which is collected by the online automatic monitoring system for the capacitor, is processed and controlled by using the utility model.
Description
The utility model relates to a kind of computer data to be handled and presetting apparatus.Specifically, be high-voltage parallel capacitor group online auto monitoring computer installation.
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 built-in electrical insulation thin spot, medium are aging, 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 major accident, just must carry out on-line monitoring, carry out fault diagnosis at any time, so that in time eliminate accident potential to the operation conditions of high-voltage parallel capacitor group.Carry out the online auto monitoring of capacitor, just need design one cover capacitor online auto monitoring system.And want design capacitance device online auto monitoring system, a computer installation that is used for data processing and analysis must be arranged again.
The purpose of this utility model is to provide a kind of capacitor on-line monitoring computer installation.This device can carry out data processing and programmed control with the signal of capacitor online auto monitoring system collection, can stop the generation of major accident.
Above-mentioned purpose of the present utility model is realized by following technical solution:
Capacitor on-line monitoring computer installation of the present utility model, its design feature is to be made of input channel, output channel, bus, main frame and man-machine interface.Wherein:
Input channel comprises A/D converter, repeating signal amplifier and input interface, and A/D converter links to each other with main frame with bus by repeating signal amplifier, input interface successively.
Output channel comprises switching signal amplifier and two interfaces.One of them interface and data acquisition unit join, and another interface links to each other with warning device by the switching signal amplifier, and two interfaces all join with bus.
Man-machine interface is made of display, manipulater, pen recorder and storer, and this display, manipulater, pen recorder and storer join by Interface ﹠ Bus respectively.
Adopt such scheme, have the following advantages:
Because computer installation of the present utility model is in the capacitor on-line monitoring system, be used with sensing transducer, data acquisition unit and warning device, can carry out online auto monitoring to the capacitor group, the generation of major accident such as the capacitor case expansion of having avoided effectively causing, blast, burning because of partial short-circuit.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Accompanying drawing is a capacitor on-line monitoring computer installation block diagram of the present utility model.
As shown in drawings, capacitor on-line monitoring of the present utility model is made of input channel 5, output channel 1, man-machine interface 15 and main frame 8 with computer installation.Wherein, input channel 5 comprises A/D converter 4, repeating signal amplifier 6 and input interface 7, and A/D converter 4 links to each other with main frame 8 with bus 18 by repeating signal amplifier 6, input interface 7 successively.Output channel 1 comprises switching signal amplifier 21, two interfaces 20 and 19, and interface 20 wherein links to each other with data acquisition unit 3, and interface 19 joins by switching signal amplifier 21 and warning device 2.Interface 20 and 19 all joins with bus 18.
Man-machine interface 15 is made of display 11, manipulater 12, register 13 and storer 14, this display, manipulater, pen recorder and storer respectively by interface 9,10,16 and 17 and bus 18 join.
When capacitor on-line monitoring of the present utility model moves with computer installation, give input channel 5 by the data acquisition unit in the online auto monitoring system 3 with the simulating signal of the capacitor group of collection, to convert digital quantity to by the analog quantity of filtering by the A/D converter in the input channel 54 again, this digital quantity flows to main frame 8 by repeating signal amplifier 6, input interface 7 and bus 18 again.Said repeating signal amplifier 6 is used at a distance that (〉=200m) information conveyance cable circuit is to solve problem of signal attenuation.
In the man-machine interface 15, manipulater 12 is a keyboard, for operating personnel carry out system configuration, parameter setting, data typing, system start-up by man-machine conversation and stop, work such as adjustment in the operational process.Display 11 is used in real time operational factor, system running state and operating result being shown.Pen recorder 13 is a printer, is used for service data form, curve etc. are printed.Storer 14 is a magnetic disk memory.Also be furnished with CD-ROM drive and floppy drive, be used for loading routine, the various service data files of access.
(a) supervise the side case according to the operator by the system that man-machine interface 15 is provided with, send the controlling of sampling programmed instruction to data acquisition unit 3 by output channel 1.This sampling routine steering order comprises: the time interval between sample frequency, sampling time, mean value calculation, the double sampling and sampling period.
(b), calculate the real-time capacitance of each capacitor unit according to electric current, the voltage signal of input channel 5 inputs.
(c) from software, transfer the capacitance that sets in advance---the temperature relation formula, according to the real time temperature of the capacitor of input channel 5 input, the capacitance that (b) point is calculated is revised.
(d) from storer 14, transfer the initial parameter of the capacitor unit of typing in advance, compare with the data that (c) point is calculated, and remove systematic error automatically.When comparison error amount during, then judge the capacitor unit non-fault less than the small step level threshold value of the fault of capacitor unit.When comparison error amount during more than or equal to the small step level threshold value of the fault of capacitor unit, then this capacitor unit is diagnosed as existing fault.
(e) transfer program, voltage signal and capacitor unit inner structure calculation of parameter according to input have the real time execution voltage on the intact element in the existing fault capacitor unit, if real time execution voltage then sends alerting signal by output channel 1 to warning device 2 more than or equal to 1.1 times element rated voltage.
(f), through the delay of certain hour, send trip signal to warning device 2 after the beginning of reporting to the police by output channel 1 according to the program that presets.
(g) every batch of monitoring, the data of calculating and the situation of diagnosis are stored.
Claims (1)
1. capacitor on-line monitoring computer installation is characterized in that being made of input channel (5), output channel (1), bus (18), main frame (8) and man-machine interface (15); Wherein:
Input channel (5) comprises A/D converter (4), repeating signal amplifier (6) and input interface (7), and A/D converter (4) links to each other with main frame (8) with bus (18) by repeating signal amplifier (6), input interface (7) successively;
Output channel (1) comprises switching signal amplifier (21) and two interfaces (20 and 19), and one of them interface (20) joins with data acquisition unit (3), and another interface (19) links to each other with warning device (2) by switching signal amplifier (21); Two interfaces (20 and 19) all join with bus (18);
Man-machine interface (15) is made of display (11), manipulater (12), pen recorder (13) and storer (14), and this display, manipulater, pen recorder and storer join by interface (9,10,16 and 17) and bus (18) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245051 CN2519960Y (en) | 2001-07-24 | 2001-07-24 | Computer device for capacitor on-line monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245051 CN2519960Y (en) | 2001-07-24 | 2001-07-24 | Computer device for capacitor on-line monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2519960Y true CN2519960Y (en) | 2002-11-06 |
Family
ID=33656363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01245051 Expired - Fee Related CN2519960Y (en) | 2001-07-24 | 2001-07-24 | Computer device for capacitor on-line monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2519960Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520204A (en) * | 2011-12-05 | 2012-06-27 | 西安航天化学动力厂 | Speed measurement device for magnetic metal gear |
-
2001
- 2001-07-24 CN CN 01245051 patent/CN2519960Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520204A (en) * | 2011-12-05 | 2012-06-27 | 西安航天化学动力厂 | Speed measurement device for magnetic metal gear |
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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 |