CN117607682A - Generator working state monitoring system and method for hydroelectric power generation - Google Patents
Generator working state monitoring system and method for hydroelectric power generation Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000010248 power generation Methods 0.000 title claims abstract description 25
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- 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
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/21—Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation
- G06F18/213—Feature extraction, e.g. by transforming the feature space; Summarisation; Mappings, e.g. subspace methods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/24—Classification techniques
- G06F18/241—Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches
- G06F18/2413—Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on distances to training or reference patterns
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Abstract
The invention relates to the technical field of hydroelectric generator monitoring, in particular to a system and a method for monitoring the working state of a hydroelectric generator, comprising the following steps: the state acquisition module is used for acquiring state data in the working process of the generator; the feature extraction module is used for analyzing the state data and extracting key feature parameters in the working process of the generator; the analysis module is used for comparing the key characteristic parameters with the operation parameters and analyzing to obtain the operation condition of the generator; the monitoring module is used for monitoring the operation condition obtained by analysis, and the system and the method for monitoring the operation condition of the generator can monitor and analyze the operation condition of the generator in real time, discover and process abnormal conditions in time, improve the working efficiency and stability of the generator and ensure the normal operation of the hydroelectric power generation system.
Description
Technical Field
The invention relates to the technical field of hydroelectric generator monitoring, in particular to a system and a method for monitoring the working state of a hydroelectric generator.
Background
With the development of economy and the progress of scientific technology, the demand of society for electric power is increasing. Due to great economic benefit and wide development prospect, hydroelectric power generation is becoming more and more interesting in China. The hydroelectric power generation can produce huge electric quantity to meet supply and demand, is different from the way of consuming natural energy to obtain electric quantity, and is widely used and accepted by people because the way of converting water energy generated by using the fall of water into electric energy is very in line with the modern environment-friendly concept.
However, during the operation and use of the hydroelectric power generator apparatus, the hydroelectric power generator apparatus often operates abnormally due to the influence of various internal and external factors. The normal working efficiency of the generator can be influenced by the factors such as engine abrasion, power station fire, abnormal braking system, overload of the generator and the like, and long-term and stable operation of the generator equipment can be ensured only by timely finding out problems and timely checking and maintaining.
In the prior art, when the hydraulic generator cannot normally work, related detection needs to be carried out on the hydraulic generator, a mode that special maintenance personnel need to arrive at the scene is adopted at present, which part of the hydraulic generator is judged to be faulty according to the working condition of the hydraulic generator at the moment, and then related maintenance is carried out on parts possibly with faults according to the judging condition.
Disclosure of Invention
The invention aims to provide a generator working state monitoring system and method for hydroelectric power generation, which are used for solving the problems that a special maintenance personnel is required to arrive at the site in the current mode, which part of a hydroelectric power generator is judged to have faults according to the working state of the hydroelectric power generator at the moment, and then related overhauling is carried out on parts possibly having faults according to the judging condition, and a great amount of time and labor cost are required to be spent in overhauling by adopting the mode.
The technical scheme of the invention is realized as follows:
the embodiment of the invention provides a generator working state monitoring system for hydroelectric power generation, which comprises the following components:
the state acquisition module is used for acquiring state data in the working process of the generator;
the feature extraction module is used for analyzing the state data and extracting key feature parameters in the working process of the generator;
the analysis module is used for comparing the key characteristic parameters in the working process of the generator with the operating parameters of the generator in normal working, and analyzing to obtain the operating condition of the generator at the moment;
and the monitoring module is used for monitoring the operation condition of the generator obtained by the analysis at the moment so as to determine whether the operation condition of the generator is healthy.
Optionally, the analysis module is specifically configured to:
acquiring the operation parameters of the generator in normal operation, and acquiring key characteristic parameters of the generator in normal operation based on the operation parameters of the generator in normal operation;
the preset data range is interval range data obtained according to key characteristic parameters of the generator during normal operation;
and acquiring the state data and/or key characteristic parameters in the working process of the generator, and comparing the state data and/or the key characteristic parameters in the working process of the generator with the corresponding preset data range to determine whether the running state of the generator set is healthy.
Optionally, the system further comprises a data storage module for storing preset data, wherein the preset data are obtained by analyzing key characteristic parameters of the generator during normal operation.
Optionally, the data storage module is further configured to store the status data and/or key characteristic parameters of the generator during normal operation.
Optionally, the key characteristic parameters in the working process of the generator include: the temperature of the generator, the speed of the water wheel and the rotational speed of the generator.
Optionally, the analysis module comprises an operation induction unit for detecting the operation condition of the generator and outputting an induction signal, a braking unit connected with the operation induction unit and controlled by the induction signal to brake and protect the generator, and an operation data transmission unit for transmitting abnormal operation data of the generator to the monitoring module;
the monitoring module comprises an alarm unit for monitoring the running condition of the generator in real time and pushing the running condition of the generator in real time, and the alarm unit comprises a reminding alarm and a serious alarm; the operation induction unit comprises a temperature sensor arranged on the generator and used for detecting the temperature of the generator, a rotating speed sensor arranged on a rotor of the generator and used for detecting the rotating speed of the generator, and a speed sensor arranged outside and used for detecting the external water flow speed of the water wheel;
the temperature preset range of the temperature sensor is A 1 -A 2 The method comprises the steps of carrying out a first treatment on the surface of the The preset range of the water wheel speed of the speed sensor is B 1 -B 2 The method comprises the steps of carrying out a first treatment on the surface of the The rotating speed preset range of the rotating speed sensor is C 1 -C 2 ；
The braking unit comprises a buffer mechanism controlled by the induction signal and used for reducing the rotating speed of the generator;
when the temperature of the generator is greater than the preset value A of the temperature sensor 2 And the external water flow speed is greater than the preset value B of the speed sensor 2 At the same time, the rotating speed of the generator is larger than the preset value C of the rotating speed sensor 2 The method comprises the steps of carrying out a first treatment on the surface of the The operation sensing unitThe brake unit is controlled by the induction signal to start the buffer mechanism to reduce the rotating speed of the generator rotor; the alarm unit carries out reminding alarm; the braking unit also comprises a braking mechanism for stopping the rotation of the generator rotor and a central processing mechanism for controlling the braking mechanism and the buffer mechanism; the buffer mechanism works for J period of time, the temperature of the generator is still greater than the preset value A2 of the temperature sensor, the central processing mechanism outputs central processing signals which are respectively transmitted to the buffer mechanism and the brake mechanism, the buffer mechanism is controlled by the central processing signals to stop running, and the brake mechanism is controlled by the central processing signals to start running; the alarm unit carries out serious alarm.
Optionally, the monitoring module further includes a statistics unit for retrieving data in the data storage module and for counting data, and the statistics unit includes a failure probability statistics subunit, where the failure probability statistics subunit retrieves data from the data storage module and directly reflects the number of times of the reminding alarm and the serious alarm, which respectively occur in the current year, in percentage of the total alarm number in a fan-shaped statistical graph.
Optionally, the statistics unit further includes a personnel scheduling statistics subunit, the personnel scheduling statistics subunit retrieves data from the data storage module and directly reflects the total alarm number of the alarm unit in each month in a columnar statistics chart form, and the fault probability statistics subunit and the personnel scheduling statistics subunit can be switched and checked at any time according to the needs of overhaulers.
Optionally, the monitoring module further comprises a recording unit, and the recording unit records and stores the sector statistical graph of each year and the columnar statistical graph of each month in each year, so that the maintenance personnel can conveniently call and check at any time.
On the other hand, the embodiment of the invention provides a method for monitoring the working state of a generator for hydroelectric power generation, which comprises the following steps:
acquiring operation data, wherein the operation data is generator data acquired in the starting process of a generator, the generator data is data acquired by a sensor, and based on the generator data, control parameters of the generator are acquired, and the control parameters are generator rotating speed values in the working operation of the generator;
an initial generator model is built, the initial generator model is used for simulating the running state of a generator during operation, historical data of the generator during operation are obtained, and the initial generator model is corrected according to the historical data to obtain a corrected initial generator model;
and determining an operation rotation speed threshold value of the generator according to the corrected initial generator model, and adjusting a control parameter of the generator according to the operation rotation speed threshold value to enable the control parameter value of the generator to be within the operation rotation speed threshold range of the generator, so that the monitoring of the working state of the generator is realized.
The beneficial effects of the invention are as follows:
according to the system and the method for monitoring the working state of the generator for hydroelectric power generation, the state data in the working process of the generator is obtained, the key characteristic parameters are analyzed and extracted, the key characteristic parameters in the working process of the generator are compared with the operating parameters of the generator in normal working so as to analyze the operating condition of the generator, and the analyzed operating condition of the generator is monitored so as to determine whether the operating state of the generator is healthy. The storage is preset data and state data, and is convenient for follow-up analysis and comparison, monitors and alarms when key characteristic parameters such as generator temperature, water wheel speed and generator rotating speed exceed a preset range, reminds the generator to run abnormally, carries out fault probability statistics and personnel scheduling statistics, is convenient for maintenance personnel to check and arrange, records and stores statistics diagrams of all the years, and is convenient for maintenance personnel to call at any time and check.
In summary, the system and the method for monitoring the working state of the generator can monitor and analyze the running state of the generator in real time, timely find and process abnormal conditions, do not need to judge which part of the hydroelectric generator is faulty according to the working state of the hydroelectric generator at the moment, and carry out relevant maintenance on parts possibly faulty according to the judged conditions, so that the working efficiency and stability of the generator are improved, and the normal operation of a hydroelectric power generation system is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow diagram of a generator operating condition monitoring system for hydroelectric power generation;
fig. 2 is a flow chart of a method for monitoring the working state of a generator for hydroelectric power generation.
Reference numerals:
1. a state acquisition module; 2. a feature extraction module; 3. an analysis module; 31. an operation sensing unit; 311. a temperature sensor; 312. a rotation speed sensor; 313. a speed sensor; 32. a braking unit; 321. a buffer mechanism; 322. a brake mechanism; 323. a central processing mechanism; 33. a data transmission unit; 4. a monitoring module; 41. an alarm unit; 411. reminding and alarming; 412. a serious alarm; 42. a statistics unit; 421. a fault probability statistics subunit; 422. a personnel scheduling statistics subunit; 43. a recording unit; 5. and a data storage module.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a generator operating state monitoring system for hydroelectric power generation, including:
the state acquisition module 1 is used for acquiring state data in the working process of the generator;
the feature extraction module 2 is used for analyzing the state data and extracting key feature parameters in the working process of the generator;
the analysis module 3 is used for comparing the key characteristic parameters in the working process of the generator with the operating parameters of the generator in normal working, and analyzing to obtain the operating condition of the generator at the moment;
and the monitoring module 4 is used for monitoring the operation condition of the generator obtained by the analysis at the moment so as to determine whether the operation condition of the generator is healthy.
In this embodiment, the analysis module 3 is specifically configured to:
acquiring the operation parameters of the generator in normal operation, and acquiring key characteristic parameters of the generator in normal operation based on the operation parameters of the generator in normal operation;
the preset data range is interval range data obtained according to key characteristic parameters of the generator during normal operation;
and acquiring the state data and/or key characteristic parameters in the working process of the generator, and comparing the state data and/or the key characteristic parameters in the working process of the generator with the corresponding preset data range to determine whether the running state of the generator set is healthy.
In this embodiment, the power generator further includes a data storage module 5, configured to store preset data, where the preset data is data obtained by analyzing key feature parameters of the power generator during normal operation.
In this embodiment, the data storage module 5 is further configured to store the status data and/or key feature parameters of the generator during normal operation.
In this embodiment, key characteristic parameters in the working process of the generator include: the temperature of the generator, the speed of the water wheel and the rotational speed of the generator.
The analysis module 3 further obtains operation parameters of the generator during normal operation and obtains key characteristic parameters, and the preset data range is used for comparing with the state data and the key characteristic parameters, so that whether the operation state of the generator set is healthy or not is determined. The data storage module 5 is used for storing preset data, state data and key characteristic parameters. Key characteristic parameters in the working process of the generator include the temperature of the generator, the speed of the water wheel and the rotating speed of the generator.
In this embodiment, the analysis module 3 includes an operation sensing unit 31 for detecting an operation condition of the generator and outputting a sensing signal, a braking unit 32 connected to the operation sensing unit 31 and controlled by the sensing signal to brake and protect the generator, and an operation data transmission unit 33 for transmitting abnormal operation data of the generator to the monitoring module 4;
the generator working state monitoring system for hydroelectric power generation further comprises a running sensing unit 31, a braking unit 32, a running data transmission unit 33, an alarm unit 41 and other modules. The operation sensing unit 31 is used for detecting the operation condition of the generator and outputting a sensing signal. The braking unit 32 is controlled by the sensing signal for braking protection based on abnormal operation data of the generator. The alarm unit 41 monitors the operation condition of the generator in real time and alarms.
The monitoring module 4 comprises an alarm unit 41 for monitoring the running condition of the generator in real time and pushing the running condition of the generator in real time, wherein the alarm unit 41 comprises a reminding alarm 411 and a serious alarm 412; the operation sensing unit 31 includes a temperature sensor 311 disposed on the generator for detecting the temperature of the generator, a rotation speed sensor 312 disposed on the rotor of the generator for detecting the rotation speed of the generator, and a speed sensor 313 disposed outside for detecting the external water flow speed to which the water wheel is subjected;
the temperature preset range of the temperature sensor 311 is a 1 -A 2 The method comprises the steps of carrying out a first treatment on the surface of the The preset range of the water wheel speed of the speed sensor 313 is B 1 -B 2 The method comprises the steps of carrying out a first treatment on the surface of the The preset rotation speed range of the rotation speed sensor 312 is C 1 -C 2 ；
The braking unit 32 comprises a buffer mechanism 321 controlled by the sensing signal for reducing the rotation speed of the generator;
when the temperature of the generator is greater than the preset value A of the temperature sensor 311 2 And the external water flow velocity is greater than the preset value B of the velocity sensor 313 2 While the rotational speed of the generator is greater than the preset value C of the rotational speed sensor 312 2 The method comprises the steps of carrying out a first treatment on the surface of the The operation sensing unit 31 outputs a sensing signal, and the braking unit 32 is controlled by the sensing signal to start the buffer mechanism 321 to reduce the rotation speed of the generator rotor; the alarm unit 41 carries out reminding alarm; the braking unit 32 further comprises a braking mechanism 322 for stopping the rotation of the generator rotor, and a central processing mechanism 323 for controlling the braking mechanism 322 and the buffering mechanism 321; the buffer mechanism 321 works for J period of time, and the temperature of the generator is still greater than the preset value A of the temperature sensor 311 2 The central processing mechanism 323 outputs a central processing signal and transmits the central processing signal to the buffer mechanism 321 and the brake mechanism 322 respectively, the buffer mechanism 321 is controlled by the central processing signal to stop running, and the brake mechanism 322 is controlled by the central processing signal to start running; the alarm unit 41 performs a serious alarm.
Wherein A in the present embodiment 1 At 0 degree centigrade, A 2 60 degrees celsius; normal speed sensor 313
The preset water flow speed value is B 1 -B 2 In the present embodiment B 1 3 m/s, B 2 25 m/s, and B 1 At the starting speed of the general generator, B 2 Is the speed when the machine is required to be stopped; the normal rotation speed preset value of the rotation speed sensor 312 is C 1 -C 2 The generator power frequency in this embodiment is 50HZ, C 1 750 revolutions per minute, C 2 1000 revolutions per minute.
The braking unit 32 comprises a buffering mechanism 321, a central processing mechanism 323 and a braking mechanism 322, wherein the buffering mechanism 321 is a special electromagnetic buffer for the generator equipment, and the electromagnetic buffer is arranged in the shell and fixedly connected with the shell. The brake mechanism 322 is a motor brake pad special for the generator equipment. The central processing mechanism 323 is used for controlling the buffer mechanism 321 and the brake mechanism 322, a controller and a detector are arranged in the central processing mechanism 323, the controller controls the execution time of the buffer mechanism 321, the detector detects the temperature of the generator and converts the temperature detection signal into a temperature detection signal to be transmitted to the controller, the controller receives the temperature detection signal and integrates the temperature detection signal, and then the central processing mechanism 321 and the brake mechanism 322 are respectively output and controlled with the central processing signal so as to control the buffer mechanism 321 and the brake mechanism 322, and further different braking measures are more reasonably taken for the generator.
In this embodiment, the monitoring module 4 further includes a statistics unit 42 for retrieving the data in the data storage module 5 and for counting the data, where the statistics unit includes a failure probability statistics subunit 421, and the failure probability statistics subunit 421 retrieves the data from the data storage module 5 and directly reflects the percentage of the number of times the alert 411 and the serious alert 412 occur in the current year, respectively, in the total number of times of the alert, as a fan-shaped statistical graph.
The monitoring module 4 may be a device such as a computer, a mobile phone, a PAD, etc., the monitoring module 4 includes an alarm unit 41, a data storage module 5, a statistics unit 42, and a recording unit 43, the alarm unit 41 includes a reminding alarm 411 and a serious alarm 412, the reminding alarm 411 is a light emitting diode D1 emitting green light, and the serious alarm 412 is a diode D2 emitting red light.
When the temperature of the generator 1 is greater than the preset value A of the temperature sensor 311 2 And the external water flow velocity is greater than the preset value B of the velocity sensor 313 2 While the rotational speed of the generator is greater than the preset value C of the rotational speed sensor 312 2 The operation sensing unit 31 can analyze and judge that the too high temperature of the generator is mainly caused by the too high rotating speed of the generator, and outputs a sensing signal; the brake unit 32 is controlled by the induction signal to start the electromagnetic valve, the rotating speed of the generator is reduced, and meanwhile the alarm unit 41 starts the reminding alarm, and the diode D1 is lightened.
If the electromagnetic valve works for J period (20 minutes is taken in J period), the temperature of the generatorThe degree is still greater than the preset value A of the temperature sensor 311 2 The brake mechanism 322, i.e. the special motor brake pad, is controlled to be turned on by the central processing signal, the electromagnetic valve is controlled to be turned off by the central processing signal, and the alarm unit 41 turns on the serious alarm 412, and the diode D2 is turned on.
In this embodiment, the statistics unit 42 further includes a personnel scheduling statistics subunit 422, the personnel scheduling statistics subunit 422 retrieves data from the data storage module 5 and directly reflects the total number of alarms of the alarm unit 41 in each month in the form of a histogram, and the fault probability statistics subunit 421 and the personnel scheduling statistics subunit 422 can switch and view at any time according to the needs of the maintainers.
The statistics unit 42 is configured to retrieve data in the data storage module 5 and perform statistics on the number of alarms, the probability of failure, the personnel scheduling, and the like. The statistics unit 42 can generate a fan-shaped statistics chart and a column statistics chart, which intuitively reflect the working state and personnel arrangement condition of the generator.
In this embodiment, the monitoring module 4 further includes a recording unit 43, where the recording unit 43 records and stores the fan-shaped statistical graph of each year and the columnar statistical graph of each month in each year, so that an maintainer can conveniently call and view at any time.
According to the power generator working state monitoring system for hydroelectric power generation, the state data in the working process of the power generator is obtained, the key characteristic parameters are analyzed and extracted, the key characteristic parameters in the working process of the power generator are compared with the operating parameters of the power generator in normal working so as to analyze the operating condition of the power generator, and the analyzed operating condition of the power generator is monitored so as to determine whether the operating state of the power generator is healthy. The storage is preset data and state data, and is convenient for follow-up analysis and comparison, monitors and alarms when key characteristic parameters such as generator temperature, water wheel speed and generator rotating speed exceed a preset range, reminds the generator to run abnormally, carries out fault probability statistics and personnel scheduling statistics, is convenient for maintenance personnel to check and arrange, records and stores statistics diagrams of all the years, and is convenient for maintenance personnel to call at any time and check.
In summary, the system and the method for monitoring the working state of the generator can monitor and analyze the running state of the generator in real time, timely find and process abnormal conditions, do not need to judge which part of the hydroelectric generator is faulty according to the working state of the hydroelectric generator at the moment, and carry out relevant maintenance on parts possibly faulty according to the judged conditions, so that the working efficiency and stability of the generator are improved, and the normal operation of a hydroelectric power generation system is ensured.
Example 2
As shown in fig. 2, the present embodiment provides a method for monitoring the working state of a generator for hydroelectric power generation, which includes step S100, step S200 and step S300.
Step S100, acquiring operation data, wherein the operation data is generator data acquired in the starting process of a generator, the generator data is data acquired by a sensor, and based on the generator data, control parameters of the generator are acquired, and the control parameters are generator rotating speed values in the working operation of the generator;
step 200, an initial generator model is constructed, wherein the initial generator model is used for simulating the running state of a generator during operation, acquiring historical data of the generator during operation, and correcting the initial generator model according to the historical data to obtain a corrected initial generator model;
step S300, determining an operation rotation speed threshold of the generator according to the corrected initial generator model, and adjusting a control parameter of the generator according to the operation rotation speed threshold to enable the control parameter value of the generator to be within the operation rotation speed threshold range of the generator, so that monitoring of the working state of the generator is achieved.
The method comprises the steps of correcting an initial generator model according to generator data collected in a history mode, adjusting control parameters of a generator according to the corrected generator model, and controlling the generator according to the adjusted control parameters. The generator is enabled to operate in a normal state, and the operation state of the generator is convenient to monitor and adjust in a relevant mode.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (10)
1. A generator operating condition monitoring system for hydroelectric power generation, comprising:
the state acquisition module is used for acquiring state data in the working process of the generator;
the feature extraction module is used for analyzing the state data and extracting key feature parameters in the working process of the generator;
the analysis module is used for comparing the key characteristic parameters in the working process of the generator with the operating parameters of the generator in normal working, and analyzing to obtain the operating condition of the generator at the moment;
and the monitoring module is used for monitoring the operation condition of the generator obtained by the analysis at the moment so as to determine whether the operation condition of the generator is healthy.
2. The generator operating condition monitoring system for hydroelectric power generation according to claim 1, wherein the analysis module is specifically configured to:
acquiring the operation parameters of the generator in normal operation, and acquiring key characteristic parameters of the generator in normal operation based on the operation parameters of the generator in normal operation;
the preset data range is interval range data obtained according to key characteristic parameters of the generator during normal operation;
and acquiring the state data and/or key characteristic parameters in the working process of the generator, and comparing the state data and/or the key characteristic parameters in the working process of the generator with the corresponding preset data range to determine whether the running state of the generator set is healthy.
3. The system for monitoring the working state of a generator for hydroelectric power generation according to claim 2, further comprising a data storage module for storing preset data, wherein the preset data is obtained by analyzing key characteristic parameters of the generator during normal operation.
4. A generator operating condition monitoring system for hydro-power generation according to claim 3 wherein the data storage module is further adapted to store the condition data and/or key characteristic parameters of the generator during normal operation.
5. The system for monitoring the operation state of a generator for hydroelectric power according to claim 4, wherein the key characteristic parameters in the operation process of the generator comprise: the temperature of the generator, the speed of the water wheel and the rotational speed of the generator.
6. The system for monitoring the working state of a generator for hydroelectric power generation according to claim 5, wherein the analysis module comprises an operation sensing unit for detecting the operation condition of the generator and outputting a sensing signal, a braking unit connected to the operation sensing unit and controlled by the sensing signal to brake and protect the generator, and an operation data transmission unit for transmitting abnormal operation data of the generator to the monitoring module;
the monitoring module comprises an alarm unit for monitoring the running condition of the generator in real time and pushing the running condition of the generator in real time, and the alarm unit comprises a reminding alarm and a serious alarm; the operation induction unit comprises a temperature sensor arranged on the generator and used for detecting the temperature of the generator, a rotating speed sensor arranged on a rotor of the generator and used for detecting the rotating speed of the generator, and a speed sensor arranged outside and used for detecting the external water flow speed of the water wheel;
the temperature preset range of the temperature sensor is A 1 -A 2 The method comprises the steps of carrying out a first treatment on the surface of the By a means ofThe preset range of the water wheel speed of the speed sensor is B 1 -B 2 The method comprises the steps of carrying out a first treatment on the surface of the The rotating speed preset range of the rotating speed sensor is C 1 -C 2 ；
The braking unit comprises a buffer mechanism controlled by the induction signal and used for reducing the rotating speed of the generator;
when the temperature of the generator is greater than the preset value A of the temperature sensor 2 And the external water flow speed is greater than the preset value B of the speed sensor 2 At the same time, the rotating speed of the generator is larger than the preset value C of the rotating speed sensor 2 The method comprises the steps of carrying out a first treatment on the surface of the The operation sensing unit outputs a sensing signal, and the braking unit is controlled by the sensing signal to start the buffer mechanism to reduce the rotating speed of the generator rotor; the alarm unit carries out reminding alarm; the braking unit also comprises a braking mechanism for stopping the rotation of the generator rotor and a central processing mechanism for controlling the braking mechanism and the buffer mechanism; the buffer mechanism works for J period of time, and the temperature of the generator is still greater than the preset value A of the temperature sensor 2 The central processing mechanism outputs a central processing signal and transmits the central processing signal to the buffer mechanism and the brake mechanism respectively, the buffer mechanism is controlled by the central processing signal to stop running, and the brake mechanism is controlled by the central processing signal to start running; the alarm unit carries out serious alarm.
7. The system of claim 6, wherein the monitoring module further comprises a statistics unit for retrieving data from the data storage module and for counting the data, the statistics unit comprises a failure probability statistics subunit, the failure probability statistics subunit retrieves data from the data storage module and directly reflects the percentage of the number of times the alert and the serious alert occur in the current year respectively as a percentage of the total number of times of the alert in a fan-shaped statistical graph.
8. The system for monitoring the working state of a generator for hydroelectric power generation according to claim 7, wherein the statistics unit further comprises a personnel scheduling statistics subunit, the personnel scheduling statistics subunit retrieves data from the data storage module and directly reflects the total number of alarms of the alarm unit in each month in the form of a histogram, and the fault probability statistics subunit and the personnel scheduling statistics subunit can be switched and checked at any time according to the needs of overhaulers.
9. The system for monitoring the working state of a generator for hydroelectric power generation according to claim 8, wherein the monitoring module further comprises a recording unit, and the recording unit records and stores the sector statistical diagrams of each year and the column statistical diagrams of each month in each year, so that maintenance personnel can conveniently call and check at any time.
10. A method for monitoring the working state of a generator for hydroelectric power generation, comprising the steps of:
acquiring operation data, wherein the operation data is generator data acquired in the starting process of a generator, the generator data is data acquired by a sensor, and based on the generator data, control parameters of the generator are acquired, and the control parameters are generator rotating speed values in the working operation of the generator;
an initial generator model is built, the initial generator model is used for simulating the running state of a generator during operation, historical data of the generator during operation are obtained, and the initial generator model is corrected according to the historical data to obtain a corrected initial generator model;
and determining an operation rotation speed threshold value of the generator according to the corrected initial generator model, and adjusting a control parameter of the generator according to the operation rotation speed threshold value to enable the control parameter value of the generator to be within the operation rotation speed threshold range of the generator, so that the monitoring of the working state of the generator is realized.
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| CN202311577647.6A CN117607682A (en) | 2023-11-24 | 2023-11-24 | Generator working state monitoring system and method for hydroelectric power generation |
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