CN102401862A - Monitoring system for power transformer - Google Patents
Monitoring system for power transformer Download PDFInfo
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- CN102401862A CN102401862A CN2011101431612A CN201110143161A CN102401862A CN 102401862 A CN102401862 A CN 102401862A CN 2011101431612 A CN2011101431612 A CN 2011101431612A CN 201110143161 A CN201110143161 A CN 201110143161A CN 102401862 A CN102401862 A CN 102401862A
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a monitoring system for a power transformer. The output of a data acquisition unit is connected with an input unit, the output of the input unit is connected with a processor, and the output of the processor is connected with a peripheral unit, a storage unit and an output unit respectively through different ports; the output of the output unit is connected with a warning device; the input unit is formed in a way that a filter circuit, an A/D (analog to digital) switching circuit and a first photoelectric isolation circuit are sequentially connected in series; the output unit is formed in a way that a second photoelectric isolation circuit, a D/A (digital to analog) switching circuit and a signal switching circuit are sequentially connected in series; comprehensive processing and analysis are carried out on the obtained information by the processor; and according to the numerical value and the variation trend of the obtained information, the reliability of the power transformer can be judged at any time, and the residual service life of the power transformer can be predicted, so that the hidden faults can be detected in the early period; besides, the monitoring system can give out early warning or provide regulated operation when necessary, has a simple structure and is reliable in monitoring.
Description
Technical field
The present invention relates to a kind of monitoring system, particularly the monitoring system of power transformer.
Background technology
The be in operation effect of various factorss such as receiving electricity, heat and external environment condition of power transformer, its performance is deterioration gradually, finally causes fault.Particularly the insulating medium in the power transformer is an organic material, like mineral oil, insulating paper, various organic synthesis materials etc. mostly; These organic materials take place aging easily under the extraneous factor effect; Cause the insulation fault of power transformer, and power transformer is a critical elements of forming electric system, in case fault is arranged; The power failure of part even wide geographic area be will cause, enormous economic loss and social influence caused.Development along with electronic technology, computer technology, photoelectric technology, signal processing technology and various sensing technologies; Can carry out on-line condition monitoring to the various important parameters of power transformer; In time obtain various information, or even faint information can be obtained also.At present, the monitoring device of power transformer also receives Effect of Environmental, and ubiquity is monitored insecure problem.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, monitoring system easy, the high-efficiency reliable power transformer of programming.
The technical scheme that the present invention adopts is: the output of data acquisition unit connects input block, the output connection processing device of input block, and the output of processor connects peripheral unit, storage unit and output unit respectively through different ports; The output of output unit connects warning device.
Further, data acquisition unit comprises acceleration transducer, ultrasonic sensor, temperature sensor, insulation sensor, discharge sensor and hydrogen gas sensor; Input block is composed in series by filtering circuit, A/D change-over circuit and first photoelectric isolating circuit successively; Output unit is composed in series by second photoelectric isolating circuit, D/A change-over circuit, signaling conversion circuit successively.
The present invention adopts processor that the information of obtaining is carried out overall treatment and analysis; According to the size and the variation tendency of its numerical value, the reliability of power transformer is made judgement at any time, also can make a prediction to the residual life of power transformer; Thereby the fault that the ability early detection is hidden; The operation of early warning or regulation can be provided in case of necessity, and simple in structure, monitoring is reliable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain;
Fig. 1 is that structure of the present invention connects synoptic diagram;
Fig. 2 is the composition connection layout of the input block 2 among Fig. 1;
Fig. 3 is the composition connection layout of the output unit 5 among Fig. 1;
Among the figure: 1. data acquisition unit; 2. input block; 3. processor; 4. peripheral unit; 5. output unit; 6. warning device; 7. storage unit; 8. filtering circuit; 9.A/D change-over circuit; 10. first photoelectric isolating circuit; 11. second photoelectric isolating circuit; 12.D/A change-over circuit; 13. signaling conversion circuit.
Embodiment
Like Fig. 1, the present invention includes data acquisition unit 1, warning device 6 and processor 3, processor 3 is cores of total system, adopts 16 monolithic type microprocessors.Data acquisition unit 1 comprises acceleration transducer, ultrasonic sensor, temperature sensor, insulation sensor, discharge sensor and hydrogen gas sensor, gathers the relevant analog data of power transformer respectively.The output of data acquisition unit 1 connects input block 2, the output connection processing device 3 of input block 2, and the output of processor 3 connects peripheral unit 4, storage unit 7 and output unit 5 respectively through different ports, and the output of output unit 5 connects warning device 6.The interface of peripheral unit 4 is used to connect hand-held programmable device, text display etc.Storage unit 7 is used for storage system program, user program and operational data.
As shown in Figure 2, input block 2 is composed in series by filtering circuit 8, A/D change-over circuit 9 and first photoelectric isolating circuit 19 successively.The analog data that data acquisition unit 1 collects at first is input to filtering circuit 8; After filtering, change through A/D change-over circuit 9 again; With analog signal conversion is to transport to first photoelectric isolating circuit 19 after the digital signal, transports to the home loop of processor 3 then and handles.
As shown in Figure 3, output unit 5 is composed in series by second photoelectric isolating circuit 11, D/A change-over circuit 12, signaling conversion circuit 13 successively.After delivering to second photoelectric isolating circuit 11 by the digital signal of processor 3 output by home loop; Convert digital signal into simulating signal by D/A change-over circuit 12 again; Through signaling conversion circuit 13 processing and amplifying; Output drives warning device 6 and reports to the police, and warning device 6 can adopt sound and light alarm device.
Claims (2)
1. the monitoring system of a power transformer; Comprise data acquisition unit (1), warning device (6) and processor (3); It is characterized in that: the output of data acquisition unit (1) connects input block (2); The output connection processing device (3) of input block (2), the output of processor (3) connects peripheral unit (4), storage unit (7) and output unit (5) respectively through different ports; The output of output unit (5) connects warning device (6).
2. the monitoring system of a kind of power transformer according to claim 1, it is characterized in that: data acquisition unit (1) comprises acceleration transducer, ultrasonic sensor, temperature sensor, insulation sensor, discharge sensor and hydrogen gas sensor; Input block (2) is composed in series by filtering circuit (8), A/D change-over circuit (9) and first photoelectric isolating circuit (19) successively; Output unit (5) is composed in series by second photoelectric isolating circuit (11), D/A change-over circuit (12), signaling conversion circuit (13) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101431612A CN102401862A (en) | 2011-05-31 | 2011-05-31 | Monitoring system for power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101431612A CN102401862A (en) | 2011-05-31 | 2011-05-31 | Monitoring system for power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102401862A true CN102401862A (en) | 2012-04-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101431612A Pending CN102401862A (en) | 2011-05-31 | 2011-05-31 | Monitoring system for power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102401862A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281684A (en) * | 1993-03-26 | 1994-10-07 | Hitachi Ltd | Apparatus monitoring system |
| US5534853A (en) * | 1991-11-22 | 1996-07-09 | Pioch S.A. | Electronic apparatus for measuring the parameters of an oil transformer |
| CN201548632U (en) * | 2009-11-16 | 2010-08-11 | 山东电力设备厂 | On-line monitoring device for capacitive equipment of intelligent transformer substation |
| CN201555933U (en) * | 2009-11-16 | 2010-08-18 | 山东电力设备厂 | On-line monitoring device of intelligent circuit breaker |
| CN201716398U (en) * | 2010-05-20 | 2011-01-19 | 常州市明及电气技术开发有限公司 | On-line monitoring device of vacuum circuit breaker |
| CN202119474U (en) * | 2011-05-31 | 2012-01-18 | 镇江泰丰电工设备制造有限公司 | Monitoring device for power transformer |
-
2011
- 2011-05-31 CN CN2011101431612A patent/CN102401862A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5534853A (en) * | 1991-11-22 | 1996-07-09 | Pioch S.A. | Electronic apparatus for measuring the parameters of an oil transformer |
| JPH06281684A (en) * | 1993-03-26 | 1994-10-07 | Hitachi Ltd | Apparatus monitoring system |
| CN201548632U (en) * | 2009-11-16 | 2010-08-11 | 山东电力设备厂 | On-line monitoring device for capacitive equipment of intelligent transformer substation |
| CN201555933U (en) * | 2009-11-16 | 2010-08-18 | 山东电力设备厂 | On-line monitoring device of intelligent circuit breaker |
| CN201716398U (en) * | 2010-05-20 | 2011-01-19 | 常州市明及电气技术开发有限公司 | On-line monitoring device of vacuum circuit breaker |
| CN202119474U (en) * | 2011-05-31 | 2012-01-18 | 镇江泰丰电工设备制造有限公司 | Monitoring device for power transformer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |