CN207093267U - A kind of Hydroelectric Generating Set State Monitoring and fault diagnosis system - Google Patents
A kind of Hydroelectric Generating Set State Monitoring and fault diagnosis system Download PDFInfo
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- CN207093267U CN207093267U CN201720629268.0U CN201720629268U CN207093267U CN 207093267 U CN207093267 U CN 207093267U CN 201720629268 U CN201720629268 U CN 201720629268U CN 207093267 U CN207093267 U CN 207093267U
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Abstract
The utility model belongs to generating set condition monitoring and fault diagnosis technical field, disclose a kind of Hydroelectric Generating Set State Monitoring and fault diagnosis system, collection of the status-monitor system for hydroelectric generating to the various signals of turbine-generator units, storage and data processing, and monitor and analyze in real time, the early warning and alarm of failure, MIS operating offices carry out data transmission, the unit real-time status data that status data server storage and management are sent from status-monitor system for hydroelectric generating, historical state data and each characteristic, computer supervisory control system is analyzed and diagnosed to Hydroelectric Generating Set State Monitoring, engineer work station is used for field engineer and monitors and analyze turbine-generator units status information；The utility model can find hidden danger existing for unit and defect in time, targetedly to unit equipment maintaining, implement State Maintenance, improve the safety and economic operation level of power plant and power network, remarkable in economical benefits.
Description
Technical field
The utility model belongs to generating set condition monitoring and fault diagnosis technical field, more particularly to a kind of hydraulic generator
Set state monitoring and fault diagnosis system.
Background technology
Big-and-middle-sized hydroelectric power plant of current China just develops towards the management mode of " unattended (few man on duty) ", is this each water
Power plant all is making great efforts to improve the safety and economic operation managerial skills and automaticity of itself.And the state of unit operation and its steady
The qualitative safety and economic operation to power plant, power network is most important.
Generating set condition monitoring and fault diagnosis mode, can not find hidden danger existing for unit in time used at present
And defect, the specific aim that unit equipment carries out maintaining is poor, is unfavorable for improving power plant, the safety and economic operation water of power network
It is flat, power plant, the economic benefit of power network are have impact on to a certain extent.
The content of the invention
The problem of existing for prior art, the utility model provide a kind of Hydroelectric Generating Set State Monitoring and failure
Diagnostic system.
The utility model is achieved in that a kind of Hydroelectric Generating Set State Monitoring and fault diagnosis system, the water wheels
Generating set condition monitoring and failure diagnosis system includes：
For the collection, storage and data processing of the various signals of turbine-generator units, and monitor and analyze in real time, together
When characteristic parameter extraction is carried out to related data, obtain turbine-generator units status data, complete early warning and the report of unit failure
It is alert, and data are reached into status data server by network, the hydraulic generator analyzed and diagnosed for further status monitoring
Unit State Monitor System；
Communicate and connect with the status-monitor system for hydroelectric generating, for the MIS operating offices carried out data transmission；
For storing and managing the unit real-time status number sent from the status-monitor system for hydroelectric generating
According to, historical state data and each characteristic, user can the generation of picture and form and modification, online modification database ginseng online
Definition, demarcation and the additions and deletions of several, online measuring point, and all devices are carried out with the status data server of Clock management；
Communicate and connect with the status data server, based on Hydroelectric Generating Set State Monitoring is analyzed and diagnosed
Calculate machine monitoring system；
Communicate and connect with the status data server, turbine-generator units state is monitored and analyzed for field engineer
Information, and modification, database parameter modification, online survey of the authorized user to system configuration, parameter setting, online picture and form
The engineer work station of definition, demarcation and the additions and deletions of point.
Further, the status-monitor system for hydroelectric generating includes：
Gathered for real-time synchronization and handle the vibration of Hydropower Unit, throw, the process variable ginseng of pressure fluctuation and correlation
Number, real-time display, alarm early warning, data management, the set steady prison of data analysis are carried out to Hydropower Unit operation stability
Survey analyzing subsystem；
For by monitoring and analyzing the air gap variation between hydrogenerator rotor, to generator amature and stator
The turbine-generator air gap monitoring analyzing subsystem of Structure dynamic characteristics monitoring；
For monitoring hydrogenerator magnetic field intensity in real time, and find out the hydrogenerator magnetic field of generator electromagnetic unbalance
Intensity monitoring analyzing subsystem；
Hydrogenerator partial discharge monitoring analyzing subsystem；
Main transformer oil chromatography monitors analyzing subsystem；
By monitoring the energy and efficiency of unit in real time, reflect the hydraulic generator function of turbine-generator units state and performance
Flow characteristic monitors analyzing subsystem.
Further, the set steady monitoring analyzing subsystem is made up of sensor, STABILITY MONITORING data acquisition device,
The sensor is connected to vibration throw input terminal by shielded multiconductor cable, then is sent to by 9 special core cables
Vibration and throw acquisition module, pre-processed and gathered by vibration and throw acquisition module, be converted into data signal, then pass through
Bus is sent to system board；
The sensor includes：Throw sensor, frame vibration sensor, pressure pulsation sensor, the stability prison
The measurement module surveyed in data acquisition device includes：Frame vibration module, throw module, pressure fluctuation module and key phase module, institute
Stating frame vibration module, throw module, pressure fluctuation module includes：Signal Pretreatment unit, low pass track anti-mixing filter
And single-chip microcomputer；The key phase module is using the key signal process plate for being provided with threshold level automatic tracking circuit.
Further, the hydrogenerator energy response monitoring analyzing subsystem and set steady monitoring analysis
System shares STABILITY MONITORING data acquisition device, and the collection of the hydrogenerator energy response monitoring analyzing subsystem signal can
Pre-processed and gathered by the pressure fluctuation module affluence passage in the STABILITY MONITORING data acquisition device, passed by bus
It is sent to system board.
Further, liquid crystal display, probe power module are additionally provided with the STABILITY MONITORING data acquisition device, is handed over
DC inverter, keyboard and mouse, the network equipment composition, the STABILITY MONITORING data acquisition device respectively with the liquid crystal display
Device, probe power module, alternating current-direct current inverter, keyboard and mouse, network equipment communication connection.
Further, the turbine-generator air gap monitors analyzing subsystem by the air gap sensor, the air gap
Monitoring Data vasculum forms, and the signal of the air gap sensor collection is connected to the air gap by shielded multiconductor cable
Input terminal, then the air gap acquisition module is sent to by 9 special core cables, pre-processed by acquisition module and adopted
Collection, is converted into data signal, then be sent to system board by bus；
The air gap sensor is made up of flat capacitor sensor and signal conditioner.
Further, the hydrogenerator magnetic field intensity monitoring analyzing subsystem is supervised with the turbine-generator air gap
Survey analyzing subsystem to install and use simultaneously, between the shared air of turbine-generator air gap monitoring analyzing subsystem
Gap Monitoring Data vasculum, the air gap monitors to be needed to configure 1 piece of magnetic field intensity module in vasculum.
Further, be additionally provided with the air gap Monitoring Data vasculum liquid crystal display, probe power module,
Alternating current-direct current inverter, keyboard and mouse, the network equipment composition, the air gap Monitoring Data vasculum respectively with the liquid crystal
Display, probe power module, alternating current-direct current inverter, keyboard and mouse, network equipment communication connection.
Further, the main transformer oil chromatography monitors analyzing subsystem by MGA2000-6 gas collectors, data acquisition unit
And device for monitoring and analyzing composition, MGA2000-6 gas collectors upload the gas concentration voltage collected by RS485
To data acquisition unit, data acquisition unit carries out quantitative analysis according to the nominal data of instrument, calculates each component and total hydrocarbon
Content and respective growth rate, then by device for monitoring and analyzing to transformer carry out accident analysis.
The advantages of the utility model and good effect are：The Hydroelectric Generating Set State Monitoring is with fault diagnosis system by water
Turbine generator group condition monitoring system, MIS operating offices, status data server, computer supervisory control system and engineer work station
Composition, status-monitor system for hydroelectric generating are used for collection, storage and the data processing of the various signals of turbine-generator units, and
Monitor and analyze in real time, while characteristic parameter extraction is carried out to related data, obtain turbine-generator units status data, it is complete
Status data server is reached by network into the early warning and alarm of unit failure, and by data, for further status monitoring
Analysis and diagnosis, MIS operating offices connect with status-monitor system for hydroelectric generating communication, for carrying out data transmission, state
Data server be used for store and manage sent from status-monitor system for hydroelectric generating unit real-time status data,
Historical state data and each characteristic, user can online picture and form generation and modification, online modification database parameter,
Definition, demarcation and the additions and deletions of online measuring point, and all devices are carried out with Clock management, computer supervisory control system takes with status data
Business device communication connection, for analyzing Hydroelectric Generating Set State Monitoring and diagnosing, engineer work station and status data service
Device communication connection, for field engineer monitor and analyze turbine-generator units status information, and authorized user to system configuration,
Parameter setting, the modification of online picture and form, database parameter modification, the definition of online measuring point, demarcation and additions and deletions；This practicality
It is new to find hidden danger existing for unit and defect in time, maintaining targetedly is carried out to unit equipment, implements shape
State is repaired, and is favorably improved power plant, the safety and economic operation level of power network, significant economic benefit is brought to power plant, power network.
Brief description of the drawings
Fig. 1 is that the Hydroelectric Generating Set State Monitoring of the utility model embodiment offer and the structure of fault diagnosis system are shown
It is intended to.
In figure：1st, status-monitor system for hydroelectric generating；11st, set steady monitoring analyzing subsystem；12nd, water wheels are sent out
Motor the air gap monitors analyzing subsystem；13rd, hydrogenerator magnetic field intensity monitoring analyzing subsystem；14th, hydrogenerator
Partial discharge monitoring analyzing subsystem；15th, main transformer oil chromatography monitoring analyzing subsystem；16th, hydrogenerator energy response monitors
Analyzing subsystem；2nd, MIS operating offices；3rd, status data server；4th, computer supervisory control system；5th, engineer work station.
Embodiment
For invention, features and effects of the present utility model can be further appreciated that, following examples are hereby enumerated, and coordinate
Accompanying drawing describes in detail as follows.
Structure of the present utility model is explained in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the Hydroelectric Generating Set State Monitoring includes with fault diagnosis system：
For the collection, storage and data processing of the various signals of turbine-generator units, and monitor and analyze in real time, together
When characteristic parameter extraction is carried out to related data, obtain turbine-generator units status data, complete early warning and the report of unit failure
It is alert, and data are reached into status data server 3 by network, the hydraulic generator analyzed and diagnosed for further status monitoring
Unit State Monitor System 1；
Communicate and connect with status-monitor system for hydroelectric generating 1, for the MIS operating offices 2 carried out data transmission；
For store and manage the unit real-time status data sent from status-monitor system for hydroelectric generating 1,
Historical state data and each characteristic, user can online picture and form generation and modification, online modification database parameter,
Definition, demarcation and the additions and deletions of online measuring point, and all devices are carried out with the status data server 3 of Clock management；
Communicate and connect with status data server 3, for the calculating analyzed Hydroelectric Generating Set State Monitoring and diagnosed
Machine monitoring system 4；
Communicate and connect with status data server 3, turbine-generator units state letter is monitored and analyzed for field engineer
Breath, and modification of the authorized user to system configuration, parameter setting, online picture and form, database parameter modification, online measuring point
Definition, demarcation and additions and deletions engineer work station 5.
In the utility model embodiment, status-monitor system for hydroelectric generating 1 includes：
Gathered for real-time synchronization and handle the vibration of Hydropower Unit, throw, the process variable ginseng of pressure fluctuation and correlation
Number, real-time display, alarm early warning, data management, the set steady prison of data analysis are carried out to Hydropower Unit operation stability
Survey analyzing subsystem 11；
For by monitoring and analyzing the air gap variation between hydrogenerator rotor, to generator amature and stator
The turbine-generator air gap monitoring analyzing subsystem 12 of Structure dynamic characteristics monitoring；
For monitoring hydrogenerator magnetic field intensity in real time, and find out the hydrogenerator magnetic field of generator electromagnetic unbalance
Intensity monitoring analyzing subsystem 13；
Hydrogenerator partial discharge monitoring analyzing subsystem 14；
Main transformer oil chromatography monitors analyzing subsystem 15；
By monitoring the energy and efficiency of unit in real time, reflect the hydraulic generator function of turbine-generator units state and performance
Flow characteristic monitors analyzing subsystem 16.
In the utility model embodiment, set steady monitors analyzing subsystem 11 by sensor, STABILITY MONITORING number
Formed according to vasculum, sensor is connected to vibration throw input terminal by shielded multiconductor cable, then passes through special 9 cores electricity
Cable is sent to vibration and throw acquisition module, is pre-processed and is gathered by vibration and throw acquisition module, is converted into digital letter
Number, then system board is sent to by bus；
Sensor includes：Throw sensor, frame vibration sensor, pressure pulsation sensor, STABILITY MONITORING data are adopted
Measurement module in header includes：Frame vibration module, throw module, pressure fluctuation module and key phase module, frame vibration mould
Block, throw module, pressure fluctuation module include：Signal Pretreatment unit, low pass track anti-mixing filter and single-chip microcomputer；Key phase
Module is using the key signal process plate for being provided with threshold level automatic tracking circuit.
In the utility model embodiment, hydrogenerator energy response monitoring analyzing subsystem 16 is supervised with set steady
Survey analyzing subsystem 11 and share STABILITY MONITORING data acquisition device, the hydrogenerator energy response monitoring signal of analyzing subsystem 16
Collection can be pre-processed and be gathered by the pressure fluctuation module affluence passage in STABILITY MONITORING data acquisition device, by total
Line is sent to system board.
In the utility model embodiment, liquid crystal display, sensor are additionally provided with STABILITY MONITORING data acquisition device
Power module, alternating current-direct current inverter, keyboard and mouse, the network equipment composition, STABILITY MONITORING data acquisition device respectively with liquid crystal
Display, probe power module, alternating current-direct current inverter, keyboard and mouse, network equipment communication connection.
In the utility model embodiment, turbine-generator air gap monitoring analyzing subsystem 12 is sensed by the air gap
Device, the air gap Monitoring Data vasculum composition, the signal of the air gap sensor collection are connected to by shielded multiconductor cable
The air gap input terminal, then the air gap acquisition module is sent to by 9 special core cables, carried out by acquisition module pre-
Processing and collection, are converted into data signal, then be sent to system board by bus；
The air gap sensor is made up of flat capacitor sensor and signal conditioner.
In the utility model embodiment, hydrogenerator magnetic field intensity monitoring analyzing subsystem 13 and hydrogenerator are empty
Gas gap monitoring analyzing subsystem 12 is installed and used simultaneously, and one is shared with turbine-generator air gap monitoring analyzing subsystem 12
Individual the air gap Monitoring Data vasculum, the air gap monitors to be needed to configure 1 piece of magnetic field intensity module in vasculum.
In the utility model embodiment, liquid crystal display, sensing are additionally provided with the Monitoring Data vasculum of the air gap
Device power module, alternating current-direct current inverter, keyboard and mouse, the network equipment composition, the air gap Monitoring Data vasculum respectively with
Liquid crystal display, probe power module, alternating current-direct current inverter, keyboard and mouse, network equipment communication connection.
In the utility model embodiment, main transformer oil chromatography monitor analyzing subsystem 15 by MGA2000-6 gas collectors,
Data acquisition unit and device for monitoring and analyzing composition, the gas concentration voltage that MGA2000-6 gas collectors will collect
Data acquisition unit is uploaded to by RS485, data acquisition unit carries out quantitative analysis according to the nominal data of instrument, calculated
The content and respective growth rate of each component and total hydrocarbon, then accident analysis is carried out to transformer by device for monitoring and analyzing.
Operation principle of the present utility model：
Status-monitor system for hydroelectric generating 1 is mainly responsible for collection, storage and the data processing of various signals, and carries out
Monitoring in real time and analysis, while characteristic parameter extraction is carried out to related data, set state data are obtained, complete unit failure
Early warning and alarm, and data are reached into status data server 3 by network, analyze and diagnose for further status monitoring.
Multiple data acquisition devices are can configure in status-monitor system for hydroelectric generating 1, can be respectively intended to monitor unit
Stability status, energy response, generator air gap, magnetic field intensity, generator stator insulator and generator operation parameter prison
Survey.Power module, UPS uninterrupted power sources and the office of factory for also have related distribution terminal in rack, power supply being provided to sensor
The optic fiber converter and interchanger of domain Netcom news.Regular maintenance in order to facilitate field adjustable and from now on, data acquisition device are interior also
A liquid crystal display, keyboard, mouse and shared device, all devices need to be configured to be integrated in the standard cabinet of system configuration.
Status data server 3 is used to storing and managing the unit real-time status number sent from each data acquisition device
According to, historical state data and each characteristic, while it is empty to receive unit STABILITY MONITORING analyzing subsystem 11, hydrogenerator
Gas gap monitoring analyzing subsystem 12, hydrogenerator magnetic field intensity monitoring analyzing subsystem 13, hydrogenerator shelf depreciation
Monitor analyzing subsystem 14, main transformer oil chromatography monitoring analyzing subsystem 15, hydrogenerator energy response monitoring analyzing subsystem
16 data, there is good autgmentability and compatibility.In addition, the data of some off-line data collecting processing systems can also lead to
Cross special tool model and be sent to status data server 3, be managed by status data server 3.Taken in status data
Be engaged in device 3 on, user also can online picture and form generation and modification, online modification database parameter, online measuring point definition,
Demarcation and additions and deletions, and Clock management is carried out to all devices.
MIS operating offices 2 are responsible for the communication of status-monitor system for hydroelectric generating 1 and mis system, pass through MIS operating offices
2, status-monitor system for hydroelectric generating 1 can obtain data from mis system, while can send the data to mis system again,
And browsing data and inquiry can be carried out in mis system.MIS operating offices 2 are responsible for the issued state data server 3 in a manner of WEB
In various data and analyzing and diagnosing result, by MIS operating offices 2, MIS on the net all users can by IE browser with
WEBization mode is analyzed set state.
Engineer work station 5 monitors for field engineer and analyzes unit for information about.On engineer work station 5,
Authorized user can carry out the modification of system configuration, parameter setting, online picture and form to whole system, database parameter is repaiied
Change, the definition of online measuring point, demarcation and additions and deletions.
Status data server 3, MIS operating offices 2, engineer work station 5 and related accessory (fire wall, fiber optical transceiver,
Interchanger, UPS etc.) it is arranged in master control room, for ease of printed report and chart, system also needs to configure printer.
Data collection station is formed：Every machine assembles data collection station one, data acquisition station equipment be arranged on 800mm ×
In 600mm × 2260mm standard cabinets.Data acquisition device, liquid crystal display, probe power module, alternating current-direct current are placed in rack
Inverter, keyboard and mouse, the network equipment and related accessories composition, data collection station are placed in generator floor on the spot.
Data acquisition device is the nucleus equipment of data collection station, is mainly responsible at the collection, storage and data of various signals
Reason, and monitor and analyze in real time, while characteristic parameter extraction is carried out to related data, set state data are obtained, are completed
Data are simultaneously reached data server by the early warning of unit failure by network, are analyzed and are diagnosed for further status monitoring.
Intelligent data acquisition case uses modularization plug-in structure, is made up of framework, system board and various acquisition modules.Often
The type and quantity of data acquisition board needed for individual TN8000 intelligent data acquisitions case can be according to spot sensor quantity, signal
Type carries out flexible configuration.
Each module can work independently in data acquisition device, wherein the failure of a certain passage or a certain module does not interfere with it
His passage or other module normal works.User only needs voluntarily to be changed with spare module when a certain module breaks down.Number
According to guide rail is provided in vasculum in order to plug, it can be locked with trip bolt after module installation and be pulled out with preventing from mispluging.With installation,
Safeguard, change the characteristics of convenience, good reliability.
Data acquisition device can provide a variety of acquisition modules：Throw module is responsible for gathering guide bearing throw signal and lifts machine amount
Signal；Vibration module is responsible for gathering various vibration signals；Pressure fluctuation module is responsible for gathering various pressure fluctuation signals and 4~work
Condition parameter；Key phase module is responsible for gathering key phase/tach signal；The air gap module is responsible for gathering air gap signal and magnetic field is strong
Spend signal；Switching value module is responsible for gathering each switching signal；Analog output module is used to export 4~20mA analog signalses；
Relay output module is responsible for output alarm signal or protection signal；System board is responsible for coordinating each acquisition module work, and
Serial communication interface and ethernet network interface are provided, communicated with external equipment；Memory module is used for data storage vasculum
Relevant procedures and part of generating units status data.
Each acquisition module concrete property of data acquisition device is as follows：
1. throw module
Throw module is responsible for gathering throw signal.Throw signal can be directly accessed from sensor, including Signal Pretreatment list
Member, low pass track anti-mixing filter and SCM system, acquisition mode use it is integer-period sampled with starting point, under any rotating speed
The sample frequency of system is 256 frequencys multiplication of power frequency, ensure that property complete cycle of sampling.
Its performance indications is as follows：Sampling rate：200kHz；Port number：Every piece of 8 tunnels；Input signal：Current vortex sensor；
Acquisition mode：It is integer-period sampled with starting point；Measurement accuracy：Peak error≤1 μm, phase error≤3 °, gap error≤0.1V.
2. vibration module
Vibration module is responsible for gathering various vibration signals.Vibration signal can be directly accessed from sensor, including signal is located in advance
Manage unit, low pass tracks anti-mixing filter and SCM system, acquisition mode uses integer-period sampled with starting point, is arbitrarily turning
The sample frequency of the lower system of speed is 256 frequencys multiplication of power frequency, ensure that property complete cycle of sampling, every group of data continuous acquisition 32 weeks
Phase, the low frequency signal of 1/32 turn of frequency can be collected, meets water turbine set.
Its performance indications is as follows：Sampling rate：200kHz；Port number：Every piece of 8 tunnels；Input signal：Speed, acceleration pass
Sensor；Acquisition mode：It is integer-period sampled with starting point；Measurement accuracy：Peak error≤1 μm, phase error≤3 °, gap error≤
0.1V。
3. key phase module
Key phase module is one piece of intelligent key signal process plate, and it carries out intelligent control by single-chip microcomputer, have test the speed, complete cycle
Phase controlling of sampling, triggering low pass track the functions such as anti-mixing filter.Key phase-plate employs novel threshold level from motion tracking
Circuit, fundamentally overcome the trouble that must often adjust threshold level.Its performance indications is as follows：Port number：Every piece of 1 tunnel；
Input signal：Current vortex sensor, photosignal；Measurement range：1~1000 rev/min of measurement accuracy：Speed error≤0.1 turn/
Point.
Pressure 4. (pulsation) module
Pressure (pulsation) module is responsible for gathering pressure fluctuation signal.Pressure fluctuation signal is from pressure fluctuation transmitter output end
Access.Pressure (pulsation) module includes Signal Pretreatment unit, low pass tracks anti-mixing filter and SCM system, collection side
Formula use with starting point it is integer-period sampled, the sample frequency of system is 256 frequencys multiplication of power frequency under any rotating speed, ensure that sampling
Property complete cycle.Its performance indications is as follows：Sampling rate：200kHz；Port number：Every piece of 8 tunnels；Input signal：4~20mA believes
Number；Acquisition mode：With starting point is integer-period sampled, constant duration sampling；Measurement accuracy：Error≤0.1%.
5. the air gap module
The air gap module is responsible for gathering the air gap and magnetic field intensity signal, and acquisition mode is used and adopted complete cycle with starting point
Sample, sample frequency can be set according to number of magnetic poles.Its performance indications is as follows：Sampling rate：200kHz；Port number：Every piece 2
Road；Input signal：4~20mA or 0~5V signals；Acquisition mode：It is integer-period sampled with starting point；Measurement accuracy：Error≤
0.1%.
6. switching value module
Switching value module is used to gather on-off model, is controlled by special single-chip microcomputer, the resolution of its individual event
Rate is less than 1ms, and it can not only catch the action of interlocking switch, and can accurately obtain time and the order of switch motion.Performance
Index is as follows：Port number：The tunnels of Mei Kuai 32；Input signal:Active switch signal or passive contact signal；Resolution ratio：≤1ms.
7. analog output module
System acquisition to all analog signalses in addition to it can be shown on display on the spot or each work station,
4~20mA analog signalses are outwards exported by analog output module to use for other systems, the corresponding range of each passage and
Corresponding analog quantity channel can be by setting menu to be configured.Port number：The tunnels of Mei Kuai 24；Output signal：4~20mA；Output
Precision：Error≤0.1%.
8. relay output module
Output alarm signal or protection signal；Port number：Every piece of 8 tunnels；The way of output:Passive contact signal；Output
Contact rating：220VDC, 2A；Relay actuation time：≤1ms.
9. system board
System board is responsible for coordinating each acquisition module work, and sampled data is analyzed and processed in real time, extraction feature ginseng
Number, set state data are obtained, complete the early warning and alarm of unit failure, while compressed on the premise of fault message is not lost
Data capacity, data are finally reached into status data server 3 or other peripheral hardwares by the Ethernet interface in system board, supplied
Further status monitoring analysis and diagnosis.One 10/100M network interface of band and dual serial communication interface in system board.Even
Connect mode：232nd, 422 or 485, baud rate:2400th, 4800,9600 or 19200；Agreement：Modbus or other
10. serial communication module
By serial communication interface, system can obtain shelf depreciation and insulation monitoring data and generator gas-chromatography prison
Survey data.Connected mode：232nd, 422 or 485, baud rate:2400th, 4800,9600 or 19200；Agreement：Modbus or other.
Ethernet communication module：By 10/100 ethernet communication module, system can by TCP/IP modes with it is other
System communication.
Memory module：Memory module is used for data storage vasculum relevant procedures and part of generating units status data, capacity are
40G。
TN8000 data acquisition device performance indications：
Input power requirement：47~63Hz, 180VAC~264VAC；Quiescent current：Maximum 3A under any input voltage；It is whole
Machine power consumption：<200W；Size：423×266.5×162；Operating temperature：0 DEG C~50 DEG C.
Hydropower Unit STABILITY MONITORING analyzing subsystem 11 is specific to the STABILITY MONITORING of Hydropower Unit feature design
System, system operation that both can be independent as one can also be used as Hydropower Plant condition monitoring and failure diagnosis system
A sub- system operation.It can gather frame vibration, main shaft runout, pressure fluctuation and the correlation of Hydropower Unit with real-time synchronization
Working condition signal, and Digital Signal Analysis and Processing is carried out, and various professional analysis means are provided, for set state evaluation and state inspection
Repair and strong technology guarantee is provided.
Hydropower Unit STABILITY MONITORING analyzing subsystem 11 is made up of sensor, STABILITY MONITORING data acquisition device, can be led to
Cross ethernet network and power plant's condition monitoring and fault diagnosis system is realized and integrated.The signal that spot sensor comes passes through multicore screen
Cable connection is covered to the vibration throw input terminal of system, then is sent to vibration and throw collection by 9 special core cables
Module, pre-processed by acquisition module and gathered, be converted into data signal, then system board, Ran Houjin are sent to by bus
The substantial amounts of online signal transacting of row and processing, obtain the various features parameter and part initial data for reflecting operating states of the units.
On the one hand STABILITY MONITORING data acquisition device carries out fault pre-alarming and alarm according to state parameter, on the other hand can pass through data
Network sends mis system or status monitoring fault diagnosis system to, does monitoring analysis and diagnosis to set state for network client.
The main organic frame vibration module of the measurement module of water turbine set STABILITY MONITORING analyzing subsystem 11, throw module, pressure
Power pulsation module and key phase module.Frame vibration module, throw module and pressure fluctuation module include Signal Pretreatment unit, low
Logical to track anti-mixing filter and SCM system, acquisition mode uses with starting point integer-period sampled, the system under any rotating speed
Sample frequency be power frequency 256 frequencys multiplication, highest analyze frequency up to 128 times turn frequency.Continuous acquisition under steady running condition
16 cycles, frequency resolution are 1/16 times and turn frequency, it is ensured that the accurate collection of low frequency vortex rope frequency.Can be real in transient process
Now prolonged data continuous acquisition, realize mass data storage, maximum duration was up to 10 minutes, it can be ensured that transitional process and
The accurate collection and analysis of abnormal operating condition stability inferior signal.
Key phase module is one piece of intelligent key signal process plate, and it carries out intelligent control by single-chip microcomputer, have test the speed, complete cycle
Phase controlling of sampling, triggering low pass track the functions such as anti-mixing filter.Key phase-plate employs novel threshold level from motion tracking
Circuit, fundamentally overcome the trouble that must often adjust threshold level.
Water turbine set STABILITY MONITORING analyzing subsystem 11 can real-time and accurately be adopted by each acquisition module of system configuration
Collect the various stability signals of unit, and the information that Real time dynamic display is monitored in a manner of a variety of collection of illustrative plates.Deposited for system
The various historical datas of storage, system provide perfect analytic function.
Real-time display：Vibration of the STABILITY MONITORING data acquisition device to unit, throw, the process of pressure fluctuation and correlation
It is real-time, parallel, integer-period sampled to measure parameter progress, and carries out processing accordingly, calculating and feature extraction, in data collection station liquid
With structural representation, rod figure, data form, guide bearing state, machine on the relevant operational terminal that crystal display and network are joined
The data and state that the form Real time dynamic displays such as frame vibration, real-time tendency are monitored.Interface is abundant directly perceived, unit information and shape
State is very clear.
By the analog output module of system configuration, the vibration pendulum angle value of all monitorings can be changed into corresponding to 4~
20mA analog signalses supply stations LCU is used.
Alarm early warning：When vibration, throw or pressure fluctuation measured value exceed alarm setting value or occur abnormal, liquid crystal display
Significantly prompted with color on device.Alarm setting value and alarming logic can should easily carry out configuration setting by software.
By the relay output module of system configuration, when vibration throw is alarmed, exportable passive contact point signal is to power station LCU.
Data management function：Different databases can be formed according to the change of operating states of the units：Real-time data base, history
Database, startup-shutdown database, event database, experimental data base and backup database.
The current all data of real-time data base storage unit, are used for monitoring in real time.
Historical data base is used for storing the data of unit normal operation, for the shape of unit after customer analysis unit longtime running
State changes.Historical data base is stored in a manner of constant duration, and storage time interval and memory capacity can be by user's roots
Flexibly set according to needs.
Startup-shutdown database is used for storing unit startup-shutdown process data, for the state of customer analysis unit startup-shutdown process
Change.
The detailed number of 30 minutes before and after (parameter off-limit alarm) when event database record record monitoring parameters occur abnormal
According to memory gap is uninterrupted storage.Event database can be used for the parameter before and after accident is recollected and played back.
Experimental data base is used to record the various test datas of unit.
Backup database is used for storing the data of user ID.
Data analysis：On the function setup of analysis system, its starting point considered is:Its vibration position of the hydraulic turbine is wide
General, its main exciting source also transmits mutually respectively from mechanical exciting, electromagnetic exciting, waterpower exciting between unit between subsidiary engine
Exciting.Its signal type has：Periodic signal, random signal.It reflects unit caused by electromagnetism, rotor, current
The forced vibration of a variety of exciting sources, may also there is self-excited vibration.To realize the systematic Study to unit situation, to work on the spot
Technical staff provides the analysis tool of complete set, and system monitoring information is carried out deeply, comprehensively to analyze, it is potential to find out unit
Where questions and prospect essence, signal analysis module is divided into according to set structure part：Guide bearing state, flow passage components, knot
Structure vibration, thrust bearing part, provide existing Gneral analysis instrument to user is comprehensive respectively and have dedicated analysis instrument again
Several analysis method, reach and spirit is carried out to the operation conditions of system and each frequency-doubled signal using various methods, from various angles
The purpose of analysis living, but also new signal analysis method can be increased for different machine group parts according to the specific requirement of user.
Set steady monitoring analyzing subsystem 11 can be communicated with computer supervisory control system 4, obtain the work of correlation
Condition parameter, fault diagnosis system can also be monitored by ICP/IP protocol and MIS of power house system or TN8000 set states and carried out
Data exchange.
Turbine-generator air gap monitors analyzing subsystem 12 by the air gap sensor, the air gap data acquisition device
Formed with analysis software, the system can be realized integrated by ethernet network and power plant's condition monitoring and fault diagnosis system.It is existing
The signal that field sensor comes is connected to the air gap input terminal of system by shielded multiconductor cable, then by special
9 core cables are sent to the air gap acquisition module, are pre-processed by acquisition module and are gathered, and are converted into data signal, then lead to
Cross bus and be sent to system board, then carry out substantial amounts of online signal transacting and processing, obtain reflecting operation state of generator
Various data.On the one hand the air gap data acquisition device carries out fault pre-alarming and alarm according to state parameter, on the other hand can incite somebody to action
Data send mis system or status monitoring fault diagnosis system to by network, and Generator Status is monitored for network client
Analysis and diagnosis.
Acquisition module in the data acquisition device of the air gap uses the air gap measurement module (2 passages/block), acquisition module
Quantity can determine according to the measuring point arrangement situation of generator air gap.In order to monitor phase and corresponding position of magnetic pole, system
Also need to introduce key signal (synchronous probe) all the way, thus the air gap also needed according to vasculum 1 piece of key phase module of configuration (1 passage/
Block).The air gap also needs to configure 1 block system plate, 1 piece of memory plane, 1 piece of analog output module, 1 piece of relay simultaneously according to vasculum
Device output module
The air gap data acquisition device makees synchronous acquisition to all passages, is synchronized by key signal, is sampled per magnetic pole
200 points, unit every revolution, the collection several points of 200 × magnetic pole per passage.
Using the relay output module of system configuration, alarm can be outwards exported when generator air gap occurs abnormal
Relay signal；Using the analog output module of system configuration, can outwards export between minimum air that each sensor measures
Gap is worth corresponding 4~20mA signals.
Data management function：Different databases can be formed according to the change of operation state of generator：Real-time data base, go through
History database, event database, experimental data base and backup database.
The current all data of real-time data base storage unit, are used for monitoring in real time.
Historical data base is used for storing the data of unit normal operation, for the shape of unit after customer analysis unit longtime running
State changes.Historical data base is stored in a manner of constant duration, and storage time interval and memory capacity can be by user's roots
Flexibly set according to needs.
The detailed number of 30 minutes before and after (parameter off-limit alarm) when event database record record monitoring parameters occur abnormal
According to memory gap is uninterrupted storage.Event database can be used for the parameter before and after accident is recollected and played back.
Experimental data base is used to record the various test datas of unit.
Backup database is used for storing the data of user ID.
Communication and network function：Turbine-generator air gap monitoring analyzing subsystem 12 can be with computer supervisory control system
4 are communicated, and are obtained the duty parameter of correlation, can also be passed through ICP/IP protocol and MIS of power house system or TN8000 unit shapes
State monitoring fault diagnosis system carries out data exchange.
Hydrogenerator magnetic field intensity monitors analyzing subsystem 13：Hydrogenerator magnetic field intensity can be monitored in real time and is found out
Generator electromagnetic unbalance.Generator electromagnetic unbalance can cause unit vibration, rotor and stator structure and part overheat and
Stress is excessive.
In order to effectively be diagnosed, magnetic field intensity monitoring is monitored with the air gap and combines and considers in the lump, can be with
Judge that imbalance is as electric fault or as caused by uneven the air gap.
Hydrogenerator magnetic field intensity monitoring analyzing subsystem 13 generally monitors analysis with turbine-generator air gap
System 12 is installed and used simultaneously, and sharing a air gap Monitoring Data with turbine-generator air gap monitoring subsystem gathers
Case, need in the Monitoring Data vasculum of the air gap to configure 1 piece of magnetic field intensity module (2 passages/block).
The signal that magnetic field strength transducer comes becomes 4~20mA and ± 5V outputs after signal conditioner, and signal is direct
Enter data acquisition device, pre-processed and gathered by magnetic field intensity monitoring modular, system board, system board pair are sent to by bus
Above-mentioned parameter can obtain relevant magnetic field intensity parameter after carrying out calculating processing, store in memory module, while by result
And related data sends mis system or status monitoring fault diagnosis system to by network, for network client to Generator Status
Do monitoring analysis and diagnosis.
The front end of hydrogenerator partial discharge monitoring analyzing subsystem 14 uses the Hydrotrac systems of IRIS companies, whole
Individual system is made up of capacitance sensor, Hydrotrac preprocessors, TN8000 data acquisition units and monitoring analysis software.
Every unit must install a HydroTrac data acquisition unit, installed in generator-near.This element monitors
The signal that PDA capacity couplers come, noise is separated from PD, obtain the quantity, amplitude and phase of PD pulses.Data
Data can be transmitted host computer by collecting unit by serial communications network (485) network, be connected by the software display on host computer
The state of any data acquisition unit, the quantity of PD pulses, amplitude and the phase connect, and alarm output is provided.
Relevant data can be sent to data acquisition device by data acquisition unit by serial communication interface, by data acquisition device
Data are integrated.
The main transformer oil chromatography monitoring headend equipment of analyzing subsystem 15 recommends the MGA2000-6 type transformers of Ningbo science and engineering
Chromatogram monitoring device.Its monitoring principle is：Transformer oil enters gas collector under the effect of built-in integral type oil pump, passes through
Cross quenching for capillary to take, isolate the dissolved gas in transformer oil, the transformer oil after Oil-gas Separation flows back to transformer
Fuel tank, the gas taken out of quenching enter in the quantity tube of electromagnetism six-way valve in the presence of built-in micro air pump.In quantity tube
Gas enters chromatographic column under carrier gas effect, it is then detected that device goes out the order of chromatographic column respectively by six component gas by gas stream
(H2, CO, CH4, C2H4, C2H2, C2H6) is transformed into voltage signal (wherein C2H2 minimum monitoring concentration is up to 1PPM), data
The gas concentration voltage collected is uploaded to data processor by collector by RS485, realizes monitoring and analysis.
Main transformer oil chromatography monitor analyzing subsystem 15 by MGA2000-6 gas collectors, TN8000 data acquisition units with
And monitoring analysis software composition.
The gas concentration voltage collected is uploaded to data acquisition list by MGA2000-6 gas collectors by RS485
Member, data acquisition unit carry out quantitative analysis according to the nominal data of instrument, calculate the content of each component and total hydrocarbon and each
From growth rate, then by fault diagnosis expert system to transformer carry out accident analysis, so as to realize the online of transformer fault
Monitoring.
Hydrogenerator energy response monitors the monitoring parameters of analyzing subsystem 16：In order to monitor the energy of unit and effect
Rate is, it is necessary to monitor unit flow, net water head and unit active power.Can unit flow can be calculated by monitoring spiral case differential pressure
Obtain to or by ultrasonic flowmeter direct measurement.Net water head can be obtained by installing differential pressure transmitter measurement, and unit is active
Power can communicate to obtain by power transducer or from monitoring system.
Data acquisition process unit：Hydrogenerator energy response monitoring analyzing subsystem 16 can be arranged on STABILITY MONITORING
In data acquisition device, the collection for having OFF signal can be by pressure (pulsation) module affluence passage in STABILITY MONITORING data acquisition device
It is acquired, is not required to increase additional hardware.
Signal flow：The signal that spot sensor comes is pre-processed and gathered by each pressure (pulsation) module, is passed through
Bus is sent to system board, and the various ambient parameters that simultaneity factor needs are sent on system board by communicating or gathering, system
What plate carried out can obtain after calculating processing unit energy and efficiency to above-mentioned parameter has related parameter, stores in memory module, together
When result is shown and analyzed, and can transmit set state monitoring fault diagnosis system integrated.
The advantages of the utility model and good effect are：The Hydroelectric Generating Set State Monitoring is with fault diagnosis system by water
Turbine generator group condition monitoring system 1, MIS operating offices 2, status data server 3, computer supervisory control system 4 and engineer's work
Make the composition of station 5, status-monitor system for hydroelectric generating 1 is used for collection, storage and the data of the various signals of turbine-generator units
Processing, and monitor and analyze in real time, while characteristic parameter extraction is carried out to related data, obtain turbine-generator units state
Data, complete the early warning and alarm of unit failure, and data are reached into status data server 3 by network, for further
Status monitoring is analyzed and diagnosis, and MIS operating offices 2 connect with the communication of status-monitor system for hydroelectric generating 1, for carrying out data
Transmission, status data server 3 are used to storing and managing the unit reality sent from status-monitor system for hydroelectric generating 1
When status data, historical state data and each characteristic, user can the generation of picture and form and modification, online modification online
Database parameter, the definition of online measuring point, demarcation and additions and deletions, and Clock management, computer supervisory control system 4 are carried out to all devices
Communicate and connect with status data server 3, for analyzing Hydroelectric Generating Set State Monitoring and diagnosing, engineer work station 5
Communicate and connect with status data server 3, monitored for field engineer and analyze turbine-generator units status information, and authorized
Modification of the user to system configuration, parameter setting, online picture and form, database parameter modification, the definition of online measuring point, mark
Fixed and additions and deletions；The utility model can find hidden danger existing for unit and defect in time, and targetedly unit equipment is carried out
Maintaining, implement State Maintenance, be favorably improved power plant, the safety and economic operation level of power network, brought to power plant, power network
Significant economic benefit.
Described above is only to preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, it is every according to the technical essence of the utility model to any simple modification made for any of the above embodiments, equivalent variations with
Modification, is belonged in the range of technical solutions of the utility model.
Claims (7)
1. a kind of Hydroelectric Generating Set State Monitoring and fault diagnosis system, it is characterised in that the turbine-generator units state is supervised
Survey includes with fault diagnosis system：
For the collection, storage and data processing of the various signals of turbine-generator units, and monitor and analyze in real time, at the same it is right
Related data carries out characteristic parameter extraction, obtains turbine-generator units status data, completes the early warning and alarm of unit failure, and
Data are reached into status data server by network, the turbine-generator units shape analyzed and diagnosed for further status monitoring
State monitoring system；
Communicate and connect with the status-monitor system for hydroelectric generating, for the MIS operating offices carried out data transmission；
For storing and managing the unit real-time status data sent from the status-monitor system for hydroelectric generating, go through
History status data and each characteristic, user can online picture and form generation and modification, online modification database parameter,
Definition, demarcation and the additions and deletions of line measuring point, and all devices are carried out with the status data server of Clock management；
Communicate and connect with the status data server, for the computer analyzed Hydroelectric Generating Set State Monitoring and diagnosed
Monitoring system；
Communicate and connect with the status data server, turbine-generator units state letter is monitored and analyzed for field engineer
Breath, and modification of the authorized user to system configuration, parameter setting, online picture and form, database parameter modification, online measuring point
Definition, demarcation and additions and deletions engineer work station.
2. Hydroelectric Generating Set State Monitoring as claimed in claim 1 and fault diagnosis system, it is characterised in that the water wheels
Generating set condition monitoring system includes：
Gathered for real-time synchronization and handle the vibration of Hydropower Unit, throw, the process variable parameter of pressure fluctuation and correlation, it is right
Hydropower Unit operation stability carries out real-time display, alarm early warning, data management, the set steady monitoring analysis of data analysis
Subsystem；
For by monitoring and analyzing the air gap variation between hydrogenerator rotor, to generator amature and stator structure
The turbine-generator air gap monitoring analyzing subsystem of dynamic characteristic monitoring；
For monitoring hydrogenerator magnetic field intensity in real time, and find out the hydrogenerator magnetic field intensity of generator electromagnetic unbalance
Monitor analyzing subsystem；
Hydrogenerator partial discharge monitoring analyzing subsystem；
Main transformer oil chromatography monitors analyzing subsystem；
By monitoring the energy and efficiency of unit in real time, reflect that the hydrogenerator energy of turbine-generator units state and performance is special
Property monitoring analyzing subsystem.
3. Hydroelectric Generating Set State Monitoring as claimed in claim 2 and fault diagnosis system, it is characterised in that the unit
STABILITY MONITORING analyzing subsystem is made up of sensor, STABILITY MONITORING data acquisition device, and the sensor passes through multicore shielding
Cable connection is sent to vibration and throw acquisition module to vibration throw input terminal, then by 9 special core cables, by shaking
Dynamic and throw acquisition module is pre-processed and gathered, and is converted into data signal, then be sent to system board by bus；
The sensor includes：Throw sensor, frame vibration sensor, pressure pulsation sensor, the STABILITY MONITORING number
Include according to the measurement module in vasculum：Frame vibration module, throw module, pressure fluctuation module and key phase module, the machine
Frame vibration module, throw module, pressure fluctuation module include：Signal Pretreatment unit, low pass track anti-mixing filter and list
Piece machine；The key phase module is using the key signal process plate for being provided with threshold level automatic tracking circuit.
4. Hydroelectric Generating Set State Monitoring as claimed in claim 2 or claim 3 and fault diagnosis system, it is characterised in that described
Hydrogenerator energy response monitors analyzing subsystem and shares STABILITY MONITORING with set steady monitoring analyzing subsystem
Data acquisition device, the collection of the hydrogenerator energy response monitoring analyzing subsystem signal can be by the STABILITY MONITORING number
Pre-processed and gathered according to the pressure fluctuation module affluence passage in vasculum, system board is sent to by bus；
Liquid crystal display, probe power module, alternating current-direct current inversion electricity are additionally provided with the STABILITY MONITORING data acquisition device
Source, keyboard and mouse, the network equipment composition, the STABILITY MONITORING data acquisition device respectively with the liquid crystal display, sensor
Power module, alternating current-direct current inverter, keyboard and mouse, network equipment communication connection.
5. Hydroelectric Generating Set State Monitoring as claimed in claim 2 and fault diagnosis system, it is characterised in that the water wheels
Generator air gap monitoring analyzing subsystem is made up of the air gap sensor, the air gap Monitoring Data vasculum, described
The signal of the air gap sensor collection is connected to the air gap input terminal by shielded multiconductor cable, then by special
9 core cables are sent to the air gap acquisition module, are pre-processed by acquisition module and are gathered, and are converted into data signal, then lead to
Cross bus and be sent to system board；
The air gap sensor is made up of flat capacitor sensor and signal conditioner.
6. Hydroelectric Generating Set State Monitoring and fault diagnosis system as described in claim 2 or 5, it is characterised in that described
Hydrogenerator magnetic field intensity monitors analyzing subsystem and pacified simultaneously with turbine-generator air gap monitoring analyzing subsystem
Dress is used, and a air gap Monitoring Data vasculum is shared with turbine-generator air gap monitoring analyzing subsystem,
Need to configure 1 piece of magnetic field intensity module in the air gap monitoring vasculum；
Liquid crystal display, probe power module, alternating current-direct current inversion are additionally provided with the air gap Monitoring Data vasculum
Power supply, keyboard and mouse, the network equipment composition, the air gap Monitoring Data vasculum respectively with the liquid crystal display, biography
Sensor power module, alternating current-direct current inverter, keyboard and mouse, network equipment communication connection.
7. Hydroelectric Generating Set State Monitoring as claimed in claim 2 and fault diagnosis system, it is characterised in that the main transformer oil
Chromatogram monitoring analyzing subsystem is made up of MGA2000-6 gas collectors, data acquisition unit and device for monitoring and analyzing,
The gas concentration voltage collected is uploaded to data acquisition unit by MGA2000-6 gas collectors by RS485, and data are adopted
Collect unit and quantitative analysis is carried out according to the nominal data of instrument, calculate the content of each component and total hydrocarbon and respective growth
Rate, then accident analysis is carried out to transformer by device for monitoring and analyzing.
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