CN112230117A - Fault on-line detection system and method for AP1000 rod power supply unit rotating diode - Google Patents
Fault on-line detection system and method for AP1000 rod power supply unit rotating diode Download PDFInfo
- Publication number
- CN112230117A CN112230117A CN202011095432.7A CN202011095432A CN112230117A CN 112230117 A CN112230117 A CN 112230117A CN 202011095432 A CN202011095432 A CN 202011095432A CN 112230117 A CN112230117 A CN 112230117A
- Authority
- CN
- China
- Prior art keywords
- fault
- power supply
- supply unit
- harmonic content
- diode
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005284 excitation Effects 0.000 claims abstract description 30
- 238000012795 verification Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
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
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2632—Circuits therefor for testing diodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
Abstract
The invention relates to the technical field of maintenance of AP1000 nuclear power station rod power supply units, in particular to a fault online detection system and method for a rotating diode of an AP1000 rod power supply unit. A fault on-line detection system for a rotating diode of an AP 1000-rod power supply unit comprises an excitation current acquisition device, a fault detection device and a fault detection module, wherein the excitation current acquisition device is used for acquiring the excitation current of the AP 1000-rod power supply unit; the excitation current analysis platform is used for acquiring the harmonic content of the acquired excitation current; and the harmonic content fault comparison module comprises a harmonic content fault comparison table for judging whether the rotating diode of the AP1000 rod power supply unit has faults or not and the specific fault type according to the obtained harmonic content. The system and the method can realize the fault on-line detection of the rotating diode of the rod power supply unit by measuring the exciting current of the rod power supply unit of the AP1000 nuclear power station and analyzing the harmonic content of the exciting current on the premise of not influencing the stable operation of the rod power supply unit and not changing the structure of the rod power supply unit, thereby ensuring the power supply reliability of the control rod of the AP1000 unit.
Description
Technical Field
The invention relates to the technical field of maintenance of AP1000 nuclear power station rod power supply units, in particular to a fault online detection system and method for a rotating diode of an AP1000 rod power supply unit.
Background
As a key sensitive device of a nuclear power station which runs for a long time, a rotating diode of an AP1000 rod power supply unit needs to bear mechanical working conditions such as large centrifugal force, large vibration, dust collection and the like besides electrical working conditions such as large current and frequent turn-off times, and certain fault possibility exists. But the rotating diode of the power unit of the AP1000 nuclear power station rod has no online detection technology.
At present, the fault detection means of the rotating diode of the AP1000 nuclear power station rod power supply unit is to disassemble an exciter end cover after shutdown and measure the on-off of the diode one by one. And the power unit of the AP1000 nuclear power station rod is stopped once every 18 months, and whether the rotating diode has a fault is checked every 54 months, and the current detection method obviously has no timeliness.
At present, a large brushless excitation generator set can monitor the state of a rotating diode by adopting a diode non-conduction detection system, but the generator of the AP1000 nuclear power station rod power supply unit is greatly different from the generator of the brushless excitation generator set in structure, and the fault of the rotating diode has different influences on excitation current and terminal voltage, so the fault of the rotating diode of the AP1000 rod power supply unit cannot be detected by the existing diode non-conduction detection system.
Disclosure of Invention
The invention provides a fault online detection system and method for an AP1000 stick power supply unit rotating diode, aiming at the problems in the prior art, and the fault online detection system and method can detect whether the diode has a fault online during the operation of the stick power supply unit, and effectively improve the fault detection efficiency and convenience of the rotating diode.
The technical scheme adopted by the invention for solving the technical problems is as follows: a trouble on-line measuring system for AP1000 excellent supply unit rotating diode includes
The excitation current acquisition equipment is used for acquiring the excitation current of the AP1000 bar power supply unit;
the excitation current analysis platform is used for acquiring the harmonic content of the acquired excitation current;
and the harmonic content fault comparison module comprises a harmonic content fault comparison table for judging whether the rotating diode of the AP1000 rod power supply unit has faults or not and the specific fault type according to the obtained harmonic content.
The system can detect whether the rotating diode has faults or not on line during the operation of the rod power supply unit, and effectively improves the fault detection efficiency and convenience of the rotating diode.
Preferably, the harmonic content fault comparison module further comprises
The modeling parameter acquisition unit is used for acquiring modeling parameters of the generator and the exciter of the AP1000 bar power supply unit;
the modeling platform is used for establishing a generator model and an exciter model of the AP1000 bar power unit according to the modeling parameters;
and the diode fault analysis platform is used for importing a generator model and an exciter model, simulating the normal operation and various fault states of the rotating diode of the AP1000 bar power supply unit, and acquiring the harmonic content of the corresponding exciting current of the rotating diode of the AP1000 bar power supply unit in the normal operation and various fault states to form a harmonic content fault comparison table.
Preferably, the harmonic content fault comparison module further comprises
And the model verification unit is used for verifying the correctness of the generator model and the exciter model.
Preferably, the modeling platform comprises a MAXWELL software platform.
Preferably, the diode fault analysis platform comprises a simple software platform.
A fault online detection method for a rotating diode of an AP1000 rod power supply unit comprises the following steps
S01, collecting the exciting current of the AP1000 bar power unit in an online state through exciting current collecting equipment;
s02, obtaining the harmonic content of the collected exciting current through an exciting current analysis platform;
and S03, judging whether the rotating diode of the AP1000 rod power supply unit has faults and the type of the faults according to the obtained harmonic content and by combining a harmonic content fault comparison table.
According to the method, the excitation current of the rod power unit of the AP1000 nuclear power station can be measured, and the harmonic content of the rod power unit can be analyzed, so that the purpose of online detection of faults of the rotating diode during the operation of the rod power unit is achieved.
Preferably, the harmonic content fault comparison table in S03 is obtained by the following steps,
s31, collecting modeling parameters of the generator and the exciter of the AP1000 bar power supply unit through a modeling parameter collecting unit;
s32, establishing a generator model and an exciter model of the AP1000 bar power supply unit on a modeling platform according to the modeling parameters;
s33, a generator model and an exciter model are led into a diode fault analysis platform, normal operation and various fault states of a rotating diode of the AP 1000-rod power supply unit are simulated through the diode fault analysis platform, and harmonic content of corresponding exciting current of the rotating diode of the AP 1000-rod power supply unit in the normal operation and various fault states is obtained to form a harmonic content fault comparison table.
Preferably, the step S32 further includes verifying correctness of the generator model and the exciter model by a model verification unit.
Preferably, the harmonic content fault comparison table specifically includes,
when the rotating diode normally operates, the content of 6 subharmonics in the first 6 subharmonics is far higher than that of other subharmonics;
when a single rotating diode is in an open circuit, the fundamental wave content is greater than 2 harmonic content in the first 6 harmonics, and the 2 harmonic content is far higher than other harmonic content;
when the two rotating diodes with the same phase are open-circuited, the content of 2-th harmonic in the first 6-th harmonic is far higher than that of other harmonics;
when the two rotating diodes in different phases are open-circuited, the fundamental content in the first 6 harmonics is far higher than the content of the other harmonics.
Preferably, the sampling frequency of the excitation current collecting device is greater than 1000 Hz.
Advantageous effects
According to the system and the method, on the premise that stable operation of the rod power unit is not influenced and the structure of the rod power unit is not changed, fault on-line detection of the rotating diode of the rod power unit is realized by measuring exciting current of the rod power unit of the AP1000 nuclear power station and analyzing harmonic content of the exciting current, so that the operation stability of the rod power unit is improved, and the power supply reliability of a control rod of the AP1000 unit is ensured.
Drawings
FIG. 1 is a schematic diagram of the distribution of harmonics in the excitation current during normal operation of the power supply of the present application;
FIG. 2 is a schematic diagram showing the distribution of harmonics in the excitation current after the single diode of the power supply of the present application is open-circuited;
FIG. 3 is a schematic diagram showing the distribution of harmonic in the exciting current after the in-phase two diodes of the power supply of the present application are opened;
FIG. 4 is a schematic diagram showing the distribution of harmonics in the excitation current after two diodes in different phases of the bar power supply are opened.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
A fault on-line detection system for an AP1000 bar power unit rotating diode comprises an exciting current acquisition device, an exciting current analysis platform and a harmonic content fault comparison module.
The exciting current collecting device is used for collecting exciting current of the AP1000 bar power unit, and the exciting current analyzing platform is used for obtaining harmonic content of the collected exciting current. The harmonic content fault comparison module comprises a harmonic content fault comparison table for judging whether the rotating diode of the AP1000 rod power supply unit has faults or not and judging the specific fault type according to the obtained harmonic content. The system can detect whether the rotating diode has faults or not on line during the operation of the rod power supply unit, and effectively improves the fault detection efficiency and convenience of the rotating diode.
The harmonic content fault comparison module further comprises a modeling parameter acquisition unit, a modeling platform and a diode fault analysis platform. The modeling parameter acquisition unit is used for acquiring modeling parameters of the generator and the exciter of the AP1000 bar power supply unit. The modeling platform is used for establishing a generator model and an exciter model of the AP1000 bar power unit according to the modeling parameters. The modeling platform comprises a MAXWELL software platform. The diode fault analysis platform is used for leading in a generator model and an exciter model, simulating normal operation and various fault states of the rotating diode of the AP1000 bar power supply unit, and acquiring the harmonic content of the corresponding exciting current of the rotating diode of the AP1000 bar power supply unit under the normal operation and various fault states to form a harmonic content fault comparison table. The diode fault analysis platform comprises a SIMPLORER software platform.
The method is characterized in that a technology for executing a rotating diode fault simulation test on an AP1000 nuclear power station rod power supply unit is not provided at present. Therefore, the application mainly relies on the joint simulation of MAXWELL software and SIMPLORER software. By measuring various parameters of a generator and an exciter of the power supply unit of the AP1000 nuclear power station rod on site, establishing an exciter and generator model corresponding to actual one-to-one in MAXWELL software, importing the model into SIMPLORER software, and simulating harmonic influence of diode faults on exciter exciting current.
The harmonic content fault comparison module further comprises a model verification unit for verifying correctness of the generator model and the exciter model. Simulating the exciting current of the bar power supply unit during normal operation in the SIMPLORER software, and obtaining: the excitation current during normal operation contains mainly 6 th harmonics. Gather excellent power unit actual running current and carry out the analysis, can obtain: the excitation current during normal operation contains mainly 6 th harmonics. The two analysis results are consistent, and the correctness of the AP1000 rod power unit model establishment can be proved.
According to the method, the unit is tripped after the short circuit of the rotating diode of the rod power unit of the AP1000 nuclear power station is obtained according to a simulation model, and the distribution condition of harmonic content in exciting current after 1 and 2 diodes are opened which are most probably generated by the rod power unit of the AP1000 nuclear power station is mainly analyzed so as to realize the fault on-line detection of the rotating diode of the rod power unit of the AP1000 nuclear power station.
As shown in fig. 1, during normal operation of the rotating diode: the first 6 harmonics are mainly contained, with the 6 harmonic content far exceeding the other subharmonic content. As shown in fig. 2, when a single diode of the rotating diode is open: mainly contains the first 6 harmonics, wherein the fundamental wave and the 2 harmonics far exceed the 6 harmonic content. As shown in fig. 3, when the two diodes of the rotating diode in phase are open: mainly comprises 2, 4 and 6 harmonics, wherein the content of the 2 harmonic exceeds the 4 harmonic and the 6 harmonic. As shown in fig. 4, two diodes of different phases of the rotating diode are open: mainly contains the first 6 harmonics, wherein the fundamental wave exceeds the 6 th harmonic content, and the 2 nd harmonic is equal to about 6 th harmonic.
The system can realize the fault on-line detection of the rotating diode of the rod power supply unit on the premise of not influencing the stable operation of the rod power supply unit and not changing the structure of the rod power supply unit, thereby improving the operation stability of the rod power supply unit and ensuring the power supply reliability of the control rod of the AP1000 unit.
A fault online detection method for an AP1000 rod power supply unit rotating diode comprises the following step S01 of collecting exciting current of the AP1000 rod power supply unit in an online state through exciting current collecting equipment, wherein the sampling frequency of the exciting current collecting equipment needs to be larger than 1000 Hz. And S02, obtaining the harmonic content of the collected excitation current through an excitation current analysis platform. The excitation current analysis platform can adopt an MATLAB software platform. And S03, judging whether the rotating diode of the AP1000 rod power supply unit has faults and the type of the faults according to the obtained harmonic content and by combining a harmonic content fault comparison table. According to the method, the excitation current of the rod power unit of the AP1000 nuclear power station can be measured, and the harmonic content of the rod power unit can be analyzed, so that the purpose of online detection of faults of the rotating diode during the operation of the rod power unit is achieved.
The harmonic content fault comparison table in the S03 is obtained through the following steps, and S31 acquires modeling parameters of the generator and the exciter of the AP1000 rod power unit through the modeling parameter acquisition unit. S32, establishing a generator model and an exciter model of the AP1000 bar power supply unit on the modeling platform according to the modeling parameters. S33, a generator model and an exciter model are led into a diode fault analysis platform, normal operation and various fault states of a rotating diode of the AP 1000-rod power supply unit are simulated through the diode fault analysis platform, and harmonic content of corresponding exciting current of the rotating diode of the AP 1000-rod power supply unit in the normal operation and various fault states is obtained to form a harmonic content fault comparison table.
As shown in fig. 1 to 4, the harmonic content fault comparison table specifically includes that, when the rotating diode normally operates, the content of the 6 th harmonic is far higher than that of the other harmonics in the first 6 th harmonic; when a single rotating diode is in an open circuit, the fundamental wave content is greater than 2 harmonic content in the first 6 harmonics, and the 2 harmonic content is far higher than other harmonic content; when the two rotating diodes with the same phase are open-circuited, the content of 2-th harmonic in the first 6-th harmonic is far higher than that of other harmonics; when the two rotating diodes in different phases are open-circuited, the fundamental content in the first 6 harmonics is far higher than the content of the other harmonics.
The S32 further includes verifying correctness of the generator model and the exciter model by the model verification unit. Specifically, the exciting current of the rod power supply unit during normal operation is simulated in the simple software, and the following results can be obtained: the excitation current during normal operation contains mainly 6 th harmonics. Gather excellent power unit actual running current and carry out the analysis, can obtain: the excitation current during normal operation contains mainly 6 th harmonics. The two analysis results are consistent, and the correctness of the AP1000 rod power unit model establishment can be proved.
According to the method, on the premise that stable operation of the rod power unit is not influenced and the structure of the rod power unit is not changed, fault on-line detection of the rotating diode of the rod power unit is realized by measuring the exciting current of the rod power unit of the AP1000 nuclear power station and analyzing the harmonic content of the exciting current, so that the operation stability of the rod power unit is improved, and the power supply reliability of a control rod of the AP1000 unit is ensured.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.
Claims (10)
1. A trouble on-line measuring system for AP1000 excellent supply unit rotating diode, its characterized in that: comprises that
The excitation current acquisition equipment is used for acquiring the excitation current of the AP1000 bar power supply unit;
the excitation current analysis platform is used for acquiring the harmonic content of the acquired excitation current;
and the harmonic content fault comparison module comprises a harmonic content fault comparison table for judging whether the rotating diode of the AP1000 rod power supply unit has faults or not and the specific fault type according to the obtained harmonic content.
2. The system of claim 1, wherein the system comprises: the harmonic content fault comparison module further comprises
The modeling parameter acquisition unit is used for acquiring modeling parameters of the generator and the exciter of the AP1000 bar power supply unit;
the modeling platform is used for establishing a generator model and an exciter model of the AP1000 bar power unit according to the modeling parameters;
and the diode fault analysis platform is used for importing a generator model and an exciter model, simulating the normal operation and various fault states of the rotating diode of the AP1000 bar power supply unit, and acquiring the harmonic content of the corresponding exciting current of the rotating diode of the AP1000 bar power supply unit in the normal operation and various fault states to form a harmonic content fault comparison table.
3. The system of claim 2, wherein the fault on-line detection system for the rotating diode of the AP1000 rod power supply unit is characterized in that: the harmonic content fault comparison module further comprises
And the model verification unit is used for verifying the correctness of the generator model and the exciter model.
4. The system of claim 2, wherein the fault on-line detection system for the rotating diode of the AP1000 rod power supply unit is characterized in that: the modeling platform comprises a MAXWELL software platform.
5. The system of claim 2, wherein the fault on-line detection system for the rotating diode of the AP1000 rod power supply unit is characterized in that: the diode fault analysis platform comprises a SIMPLORER software platform.
6. A fault on-line detection method for AP1000 stick power unit rotating diode, its characterized in that: comprises the following steps
S01, collecting the exciting current of the AP1000 bar power unit in an online state through exciting current collecting equipment;
s02, obtaining the harmonic content of the collected exciting current through an exciting current analysis platform;
and S03, judging whether the rotating diode of the AP1000 rod power supply unit has faults and the type of the faults according to the obtained harmonic content and by combining a harmonic content fault comparison table.
7. The method for on-line detection of the fault of the rotating diode of the AP1000 rod power supply unit according to claim 6, wherein the method comprises the following steps: the harmonic content fault comparison table in the S03 is obtained by the following steps,
s31, collecting modeling parameters of the generator and the exciter of the AP1000 bar power supply unit through a modeling parameter collecting unit;
s32, establishing a generator model and an exciter model of the AP1000 bar power supply unit on a modeling platform according to the modeling parameters;
s33, a generator model and an exciter model are led into a diode fault analysis platform, normal operation and various fault states of a rotating diode of the AP 1000-rod power supply unit are simulated through the diode fault analysis platform, and harmonic content of corresponding exciting current of the rotating diode of the AP 1000-rod power supply unit in the normal operation and various fault states is obtained to form a harmonic content fault comparison table.
8. The method for on-line detection of the fault of the rotating diode of the AP1000 rod power supply unit according to claim 7, wherein the method comprises the following steps: the S32 further includes verifying correctness of the generator model and the exciter model by the model verification unit.
9. The method for on-line detection of the fault of the rotating diode of the AP1000 rod power supply unit according to claim 6, wherein the method comprises the following steps: the harmonic content fault comparison table specifically includes,
when the rotating diode normally operates, the content of 6 subharmonics in the first 6 subharmonics is far higher than that of other subharmonics;
when a single rotating diode is in an open circuit, the fundamental wave content is greater than 2 harmonic content in the first 6 harmonics, and the 2 harmonic content is far higher than other harmonic content;
when the two rotating diodes with the same phase are open-circuited, the content of 2-th harmonic in the first 6-th harmonic is far higher than that of other harmonics;
when the two rotating diodes in different phases are open-circuited, the fundamental content in the first 6 harmonics is far higher than the content of the other harmonics.
10. The method for on-line detection of the fault of the rotating diode of the AP1000 rod power supply unit according to claim 6, wherein the method comprises the following steps: the sampling frequency of the excitation current acquisition equipment is more than 1000 Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011095432.7A CN112230117B (en) | 2020-10-14 | 2020-10-14 | Fault on-line detection system and method for rotating diode of AP1000 bar power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011095432.7A CN112230117B (en) | 2020-10-14 | 2020-10-14 | Fault on-line detection system and method for rotating diode of AP1000 bar power unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112230117A true CN112230117A (en) | 2021-01-15 |
| CN112230117B CN112230117B (en) | 2023-11-24 |
Family
ID=74112757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011095432.7A Active CN112230117B (en) | 2020-10-14 | 2020-10-14 | Fault on-line detection system and method for rotating diode of AP1000 bar power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112230117B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2004398A1 (en) * | 1988-12-02 | 1990-06-02 | Tetsuji Nakatani | Second-harmonic-wave choking filter |
| JP2008295252A (en) * | 2007-05-28 | 2008-12-04 | Mitsubishi Electric Corp | Rotary rectifier fault detector and protection device of brushless synchronous machine |
| CN101644739A (en) * | 2009-08-03 | 2010-02-10 | 南京南瑞继保电气有限公司 | Method for detecting fault of rotating diode |
| CN201886119U (en) * | 2010-11-25 | 2011-06-29 | 杭州三和电控设备有限公司 | Rotary diode fault detection system based on microcomputer excitation adjuster |
| CN202256496U (en) * | 2011-10-11 | 2012-05-30 | 深圳市亚特尔科技有限公司 | Power harmonic analysis apparatus based on FFT (fast Fourier transform) |
| JP2016158323A (en) * | 2015-02-23 | 2016-09-01 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Harmonic restraint device with active filter |
| US20170160330A1 (en) * | 2015-12-04 | 2017-06-08 | Rolls-Royce Plc | Electrical machine component failure detection apparatus and method |
| CN109557466A (en) * | 2018-11-08 | 2019-04-02 | 深圳中广核工程设计有限公司 | Rotary rectifier bridge on-line real time monitoring Design Method, device and storage medium |
| CN109596936A (en) * | 2018-12-21 | 2019-04-09 | 许昌学院 | Aviation three-phase AC excitation system dual rotary diode open-circuit fault detection method |
| CN109738780A (en) * | 2019-02-02 | 2019-05-10 | 广东核电合营有限公司 | One tube open circuit detection method of multiphase corner connection brushless exciter rotating diode and system |
-
2020
- 2020-10-14 CN CN202011095432.7A patent/CN112230117B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2004398A1 (en) * | 1988-12-02 | 1990-06-02 | Tetsuji Nakatani | Second-harmonic-wave choking filter |
| JP2008295252A (en) * | 2007-05-28 | 2008-12-04 | Mitsubishi Electric Corp | Rotary rectifier fault detector and protection device of brushless synchronous machine |
| CN101644739A (en) * | 2009-08-03 | 2010-02-10 | 南京南瑞继保电气有限公司 | Method for detecting fault of rotating diode |
| CN201886119U (en) * | 2010-11-25 | 2011-06-29 | 杭州三和电控设备有限公司 | Rotary diode fault detection system based on microcomputer excitation adjuster |
| CN202256496U (en) * | 2011-10-11 | 2012-05-30 | 深圳市亚特尔科技有限公司 | Power harmonic analysis apparatus based on FFT (fast Fourier transform) |
| JP2016158323A (en) * | 2015-02-23 | 2016-09-01 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Harmonic restraint device with active filter |
| US20170160330A1 (en) * | 2015-12-04 | 2017-06-08 | Rolls-Royce Plc | Electrical machine component failure detection apparatus and method |
| CN109557466A (en) * | 2018-11-08 | 2019-04-02 | 深圳中广核工程设计有限公司 | Rotary rectifier bridge on-line real time monitoring Design Method, device and storage medium |
| CN109596936A (en) * | 2018-12-21 | 2019-04-09 | 许昌学院 | Aviation three-phase AC excitation system dual rotary diode open-circuit fault detection method |
| CN109738780A (en) * | 2019-02-02 | 2019-05-10 | 广东核电合营有限公司 | One tube open circuit detection method of multiphase corner connection brushless exciter rotating diode and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112230117B (en) | 2023-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206975158U (en) | A kind of detection means of generator rotor interturn short-circuit situation | |
| Gaona et al. | A novel rotor ground-fault-detection technique for synchronous machines with static excitation | |
| KR101089606B1 (en) | Simulation system of wind power | |
| CN108252873A (en) | A kind of wind power generating set online data monitoring and its system of Performance Evaluation | |
| CN102200564B (en) | Power system oscillation identification method based on power angle calculation | |
| CN106526479B (en) | Power shovel electrical malfunction diagnostic method based on mains by harmonics feature | |
| CN102636768B (en) | A kind of lightning arrester on-line computing model on-line testing method | |
| CN102706560A (en) | State monitoring method and device of wind turbine generator set | |
| CN103558552A (en) | Mutual inductance type three-phase motor current noise fault detecting method and device for implementing method | |
| CN103983889A (en) | Diagnosis method for active power filter switching device open-circuit fault based on model reference analysis | |
| CN105070334B (en) | A method of judging that control rod drive mechanism acts based on curent change | |
| CN106383270A (en) | Wide-area measurement information based electric power system sub-synchronous oscillation monitoring method and system | |
| CN107797023B (en) | Three-phase voltage unbalance source positioning method, device and system | |
| CN112230117B (en) | Fault on-line detection system and method for rotating diode of AP1000 bar power unit | |
| CN105866592A (en) | System and method for acquiring dynamic reactive power compensation response waveforms | |
| CN105676013A (en) | System and method for testing unit running status monitoring function of wide-area measurement system | |
| CN105259483A (en) | Method for measuring insulating state of generator rotor winding to iron core and shaft system | |
| CN111475930A (en) | Fan switching test system and method | |
| CN202837421U (en) | DSP and CPLD-based wind-power electrical-network electric-energy parameter detection apparatus | |
| CN109406987A (en) | Fault detection method, device and the storage medium of nuclear power station rotary rectifier bridge | |
| CN205229339U (en) | Distributing type converter transformer dc magnetic biasing detecting system | |
| CN105676061A (en) | System and method for testing disturbance identification function of wide-area measurement system | |
| KR20120100268A (en) | System, apparatus and method for power quality analyzer in wind turbine | |
| CN207115183U (en) | A kind of Wind turbines column foot switch board inspects device | |
| CN111737875A (en) | Active power imbalance rate analysis and diagnosis method and system and computer equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |