CN103867402A - Condition monitoring system of generator set - Google Patents
Condition monitoring system of generator set Download PDFInfo
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- CN103867402A CN103867402A CN201410079895.2A CN201410079895A CN103867402A CN 103867402 A CN103867402 A CN 103867402A CN 201410079895 A CN201410079895 A CN 201410079895A CN 103867402 A CN103867402 A CN 103867402A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a condition monitoring system of a generator set. The condition monitoring system comprises a rotating speed detection unit used for detecting the speed of a rotating shaft of a generator, a rotating speed correction unit used for correcting a rotating speed signal, a speed regulation unit used for regulating the speed of the rotating shaft of the generator, a signal acquisition unit used for collecting all kinds of detection signals of the generator, a signal processing unit used for preprocessing the detection signal, an input unit used for inputting a command, a control unit used for sending a control command and analyzing a signal processing result, a storage unit used for storing the signal processing result, and a display unit used for displaying the condition of the generator set. According to the condition monitoring system, the speed of the rotating shaft of the generator is corrected, and all kinds of collected detection signals are pre-processed to obtain the purer detection signal, so that the generator set is accurately and comprehensively monitored.
Description
Technical field
The present invention relates to electrical generator fields, relate in particular to a kind of generator set condition monitoring system.
Background technique
Along with wind generating technology is more and more ripe, wind power generating set electric motor power is increasing, certainly, for preventing the generation of major accident, for the needs of safety in production, the running state of generator set is carried out to monitoring comprehensively and accurately, seems particularly important.And general monitoring system only gathers, analyzes the various state signals of the generator in running, then just directly whether judge fault.Not only ignored the impact that alternator shaft rotational velocity causes various signal magnitude, and these signals are lacked to meticulous pretreatment, thereby made the validity of the result of obtaining inadequate, the accuracy of monitoring declines.
Summary of the invention
The object of the present invention is to provide a kind of generator set condition monitoring system, can revise the spindle speed of generator, and all kinds of testing signals that gather are carried out to pretreatment, and obtain more pure testing signal, thereby realize, generator set accurately and is all sidedly monitored.
The technological scheme that realizes above-mentioned purpose is:
A kind of generator set condition monitoring system, comprises rotation speed detection unit, rotating speed amending unit, speed adjustment unit, signal gathering unit, signal processing unit, input unit, control unit, display unit and storage unit, wherein:
Rotation speed detection unit, for detection of the spindle speed of generator, obtains tach signal;
Rotating speed amending unit by described tach signal and the rotational speed criteria comparison prestoring, is revised output speed regulating command in the time exceeding standard;
Speed adjustment unit, according to the described rotational speed regulation instruction receiving, the spindle speed of regulator generator;
Signal gathering unit, for gathering all kinds of testing signals of generator;
Signal processing unit, for described all kinds of testing signals are carried out to pretreatment, is transferred to described control unit by processing result;
Input unit, for inputting instruction;
Control unit, connects respectively described input unit, rotating speed amending unit, signal processing unit, display unit and storage unit, receives on the one hand the instruction of described input unit input, controls described rotating speed amending unit and sends rotational speed regulation instruction; Receive on the other hand the signal processing results of described signal processing unit output, and it deposits described storage unit in, the signal processing results receiving is analyzed simultaneously, judge generator set status, control described display unit show state.
In above-mentioned generator set condition monitoring system, described testing signal comprises oil temperature signal, voltage signal, power signal and the oscillating signal of generator.
In above-mentioned generator set condition monitoring system; described generator set condition monitoring system also comprises that the urgency that connects described control unit stops unit; in the time that described control unit judges that the signal processing results of described signal processing unit output exceeds default secure threshold; described in described control unit control, suddenly stopping unit sends halt instruction, makes generator out of service.
In above-mentioned generator set condition monitoring system, described signal processing unit comprises that the time domain connecting successively turns frequency domain unit, filter unit, signal taxon and frequency analysis unit, wherein:
Time domain turns frequency domain unit, for the testing signal that is received from described signal gathering unit is carried out to the conversion from time domain to frequency domain;
Filter unit, for carrying out filtering to the signal the conversion from time domain to frequency domain;
Signal taxon, for classifying filtered signal;
Frequency analysis unit, for sorted signal is analyzed by high frequency, intermediate frequency and low frequency, is transferred to described control unit by result.
The invention has the beneficial effects as follows: the present invention revises the spindle speed of generator by rotating speed amending unit, and make it in critical field, avoid because of the too fast of rotating speed or cross the collection that affects slowly testing signal, simultaneously, by all kinds of testing signals that gather are carried out to pretreatment effectively, obtain more pure testing signal, increased the degree of accuracy of final analysis result, thereby realize, generator set accurately and is all sidedly monitored.And the urgency of the present invention's configuration is stopped unit can, in the time of the pre-generation of security incident or generation, stop the operation of generator set at once, has further improved safety coefficient.
Accompanying drawing explanation
Fig. 1 is generator set condition monitoring system structural representation of the present invention.
Fig. 2 is the structural representation of signal processing unit in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 1 and Fig. 2, generator set condition monitoring system of the present invention, comprise rotation speed detection unit 1, rotating speed amending unit 2, speed adjustment unit 3, signal gathering unit 4, signal processing unit 5, input unit 6, control unit 7, display unit 8, storage unit 9 and suddenly stop unit 10, wherein:
Rotation speed detection unit 1, rotating speed amending unit 2 and speed adjustment unit 3 are connected successively; Rotation speed detection unit 1 detects the spindle speed of generator, obtain tach signal and pass to rotating speed amending unit 2, rotating speed amending unit 2 is by tach signal and the rotational speed criteria comparison prestoring, in the time exceeding standard, revise, output speed regulating command is to speed adjustment unit 3, certainly output signal not in the time not exceeding; Speed adjustment unit 3 is according to the rotational speed regulation instruction receiving, and the spindle speed of regulator generator is moved generator within the scope of default secure reference, for signals collecting provides standard, favourable collection environment.
Time domain turns frequency domain unit 51 all kinds of testing signals that receive is carried out to the conversion from time domain to frequency domain; Filter unit 52 carries out filtering to the signal changing from time domain to frequency domain; Signal taxon 53 is classified filtered signal; Frequency analysis unit 54 is analyzed sorted signal by high frequency, intermediate frequency and low frequency, result is transferred to control unit 7, thereby obtains more pure testing signal, has increased the degree of accuracy of final analysis result.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technological schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1. a generator set condition monitoring system, is characterized in that, comprises rotation speed detection unit, rotating speed amending unit, speed adjustment unit, signal gathering unit, signal processing unit, input unit, control unit, display unit and storage unit, wherein:
Rotation speed detection unit, for detection of the spindle speed of generator, obtains tach signal;
Rotating speed amending unit by described tach signal and the rotational speed criteria comparison prestoring, is revised output speed regulating command in the time exceeding standard;
Speed adjustment unit, according to the described rotational speed regulation instruction receiving, the spindle speed of regulator generator;
Signal gathering unit, for gathering all kinds of testing signals of generator;
Signal processing unit, for described all kinds of testing signals are carried out to pretreatment, is transferred to described control unit by processing result;
Input unit, for inputting instruction;
Control unit, connects respectively described input unit, rotating speed amending unit, signal processing unit, display unit and storage unit, receives on the one hand the instruction of described input unit input, controls described rotating speed amending unit and sends rotational speed regulation instruction; Receive on the other hand the signal processing results of described signal processing unit output, and it deposits described storage unit in, the signal processing results receiving is analyzed simultaneously, judge generator set status, control described display unit show state.
2. generator set condition monitoring system according to claim 1, is characterized in that, described testing signal comprises oil temperature signal, voltage signal, power signal and the oscillating signal of generator.
3. generator set condition monitoring system according to claim 2; it is characterized in that; described generator set condition monitoring system also comprises that the urgency that connects described control unit stops unit; in the time that described control unit judges that the signal processing results of described signal processing unit output exceeds default secure threshold; described in described control unit control, suddenly stopping unit sends halt instruction, makes generator out of service.
4. generator set condition monitoring system according to claim 1, is characterized in that,
Described signal processing unit comprises that the time domain connecting successively turns frequency domain unit, filter unit, signal taxon and frequency analysis unit, wherein:
Time domain turns frequency domain unit, for the testing signal that is received from described signal gathering unit is carried out to the conversion from time domain to frequency domain;
Filter unit, for carrying out filtering to the signal the conversion from time domain to frequency domain;
Signal taxon, for classifying filtered signal;
Frequency analysis unit, for sorted signal is analyzed by high frequency, intermediate frequency and low frequency, is transferred to described control unit by result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410079895.2A CN103867402A (en) | 2014-03-06 | 2014-03-06 | Condition monitoring system of generator set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410079895.2A CN103867402A (en) | 2014-03-06 | 2014-03-06 | Condition monitoring system of generator set |
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| CN103867402A true CN103867402A (en) | 2014-06-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533730A (en) * | 2015-01-13 | 2015-04-22 | 冀文举 | State monitoring system of wind generating set |
| CN104564542A (en) * | 2015-01-30 | 2015-04-29 | 上海电机学院 | Fault diagnosis system and fault diagnosis method based on massive data technology |
| CN105137350A (en) * | 2015-07-24 | 2015-12-09 | 南京华盾电力信息安全测评有限公司 | Wind turbine generator set performance monitoring method based on eight states |
| CN106401870A (en) * | 2015-07-29 | 2017-02-15 | 通用电气公司 | Wind turbine control using secondary controller to adjust wind speed and/or direction input values |
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| WO2011124696A2 (en) * | 2010-04-08 | 2011-10-13 | Repower Systems Ag | Dynamic inertia regulation |
| CN202645852U (en) * | 2011-12-07 | 2013-01-02 | 北京科诺伟业科技有限公司 | Control system for vertical shaft wind generating set |
| CN202645849U (en) * | 2012-07-10 | 2013-01-02 | 国电联合动力技术有限公司 | Wind turbine generator state monitoring and fault diagnosing system coupled with control system |
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| CN101550907A (en) * | 2008-04-02 | 2009-10-07 | 西门子公司 | Method of damping tower vibrations of a wind turbine and control system for wind turbines |
| WO2011124696A2 (en) * | 2010-04-08 | 2011-10-13 | Repower Systems Ag | Dynamic inertia regulation |
| CN202645852U (en) * | 2011-12-07 | 2013-01-02 | 北京科诺伟业科技有限公司 | Control system for vertical shaft wind generating set |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533730A (en) * | 2015-01-13 | 2015-04-22 | 冀文举 | State monitoring system of wind generating set |
| CN104564542A (en) * | 2015-01-30 | 2015-04-29 | 上海电机学院 | Fault diagnosis system and fault diagnosis method based on massive data technology |
| CN104564542B (en) * | 2015-01-30 | 2018-10-16 | 上海电机学院 | A kind of fault diagnosis system and its diagnostic method based on big data technology |
| CN105137350A (en) * | 2015-07-24 | 2015-12-09 | 南京华盾电力信息安全测评有限公司 | Wind turbine generator set performance monitoring method based on eight states |
| CN105137350B (en) * | 2015-07-24 | 2018-11-30 | 南京华盾电力信息安全测评有限公司 | A kind of wind power generating set performance monitoring method based on eight states |
| CN106401870A (en) * | 2015-07-29 | 2017-02-15 | 通用电气公司 | Wind turbine control using secondary controller to adjust wind speed and/or direction input values |
| CN106401870B (en) * | 2015-07-29 | 2021-02-12 | 通用电气公司 | Wind turbine control using secondary controller to adjust wind speed and/or wind direction input values |
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Application publication date: 20140618 |