CN114294152B - On-line state monitoring method and system for speed regulating system equipment of hydroelectric generating set - Google Patents
On-line state monitoring method and system for speed regulating system equipment of hydroelectric generating set Download PDFInfo
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Abstract
The application discloses a method for monitoring the on-line state of a speed regulation system device of a hydroelectric generating set, which comprises the following steps: collecting equipment measurement data of each terminal equipment of a hydro-generator set speed regulation system; obtaining the data deviation of the current working state of each terminal device according to preset device working condition data; performing state analysis on the data deviation by using an expert database to obtain the real-time state of each terminal device; and sending out equipment fault alarm or equipment maintenance prompt according to the real-time state of the equipment. The system comprises a data acquisition module, a data analysis module, a state analysis module and an early warning module. The method and the device can monitor and calculate the real-time data of the terminal equipment on line, judge the current working state of the terminal equipment, and realize real-time state evaluation of the machine set speed regulation system terminal.
Description
Technical Field
The application belongs to the technical field of hydroelectric generating set on-line monitoring, and particularly relates to a hydroelectric generating set speed regulation system equipment on-line state monitoring method and system.
Background
Along with the rapid development of hydropower construction and hydropower technology in China, a large number of advanced information communication technologies are widely applied to production monitoring and management of hydropower stations, so that the automation degree and the digitization level of the hydropower stations are higher and higher, the functions of production monitoring and management equipment are stronger, and the monitoring and management range is wider and wider. Along with new construction or technical upgrading of hydropower stations, hydropower stations gradually span intelligent power plants.
In the conventional hydropower station, according to the technical level requirement of production automation monitoring management, a part of work needs manual intervention, such as monitoring of equipment of a unit part, fault analysis, execution of a part of production management tasks and the like. Therefore, in the power production process, the on-line monitoring of the state of the generator set can meet the requirement of safe production; the microcomputer excitation system, microcomputer speed regulator system and other equipment can basically meet the requirement of the traditional hydropower station safety production under the monitoring of field staff because the control part of the microcomputer excitation system, microcomputer speed regulator system and other equipment has a certain running state monitoring function.
However, with the improvement of the automation, digitization, intellectualization and intelligent degree of the hydropower station, the working characteristics of the hydropower station are greatly changed, the condition of manual intervention on the working site of the hydropower station is less and less, and the traditional on-line monitoring technology and range of the state of hydropower station equipment cannot meet the requirements of the intelligent power plant and the intelligent power plant in the development direction. Therefore, the research and development of the hydropower station equipment state on-line monitoring technology and device suitable for the technology and the device have great practical effects and significance.
In addition, in the conventional equipment maintenance scheme of the hydropower station, production equipment is mainly maintained according to a regular schedule. However, the safe working service life of each part of the production equipment is not the same, so that the equipment cannot be used to the best and satisfactory effect due to regular scheduled maintenance, and sometimes the safe operation of the equipment is affected due to unexpected faults of the equipment in the normal service period, so that unnecessary serious loss is caused. The existing equipment maintenance is mainly equipment state maintenance, mainly by making maintenance plans and schemes according to the working state conditions of the equipment and implementing maintenance work according to the made plans and schemes. The future equipment overhaul work will develop to the intelligent management and control of the whole overhaul process. And no matter how the equipment overhaul work is carried out in the future, the data of the on-line monitoring diagnosis of the equipment state is the main basis for the establishment of an equipment overhaul scheme and the intelligent management and control of the overhaul work. It follows that on-line monitoring of the status of equipment plays an important role in the maintenance work of the equipment.
At present, a great deal of research and development work is carried out on the on-line monitoring technology of the equipment state of the hydropower station, and satisfactory results are obtained. However, these works and achievements are mainly focused on-line monitoring of the state of the hydro-generator set, so that the on-line monitoring technology of the state of the hydro-generator set is mature, and the country has issued relevant technical conditions and technical guidelines. However, the research on the technical aspect of on-line monitoring and diagnosis of the equipment state of a speed regulation system and an excitation system of the hydroelectric generating set is rarely related. Although the speed regulating system of the hydroelectric generating set and the control and regulation part of the excitation system have certain running state monitoring functions, the state of each component equipment of the system is not monitored on line, if the equipment fails, the whole system can work abnormally, and therefore the normal and safe running of the set is affected. Along with the development process of digitalization, intellectualization and intellectualization of the hydropower station, the on-line monitoring and diagnosis range of the hydropower station equipment state also covers the related equipment of the hydropower station, so that the on-line monitoring and diagnosis of the equipment states of a speed regulation system and an excitation system of the hydroelectric generating set are imperative, and the on-line monitoring and diagnosis of the equipment states of the hydroelectric generating set are imperative.
Disclosure of Invention
The method and the system for monitoring the online state of the speed regulating system equipment of the water turbine generator set are provided, an online state monitoring data acquisition point of the speed regulating system of the water turbine generator set is established, and a terminal equipment state/performance judging expert base is established, so that real-time data of the terminal equipment can be calculated online, and the working state can be judged.
To achieve the above object, the present application provides the following solutions:
an on-line state monitoring method for a speed regulating system device of a hydroelectric generating set comprises the following steps:
collecting equipment measurement data of each terminal equipment of a hydro-generator set speed regulation system;
according to preset equipment working condition data, carrying out data analysis on the equipment measurement data to obtain data deviation of the current working state of each terminal equipment;
performing state analysis on the data deviation by using an expert database to obtain real-time equipment states of the terminal equipment, wherein the real-time equipment states comprise a fault state, a state to be maintained and a normal state;
according to the real-time state of the equipment, an equipment fault alarm or an equipment maintenance prompt is sent out, and when the terminal equipment is in a fault state, the equipment fault alarm is sent out; and when the terminal equipment is in a state needing maintenance, sending out the equipment maintenance prompt.
Optionally, the device measurement data includes governor device status data, oil pressure device status data, and governor actuator status data;
the speed regulator device state data is used for reflecting the state of the speed regulator device;
the oil pressure device state data is used for reflecting the state of the oil pressure device;
the speed regulation executing mechanism state data are used for reflecting the state of the speed regulation executing mechanism.
Optionally, the method for analyzing data includes: and comparing the equipment measurement data of each terminal equipment with the preset equipment working condition data to obtain a difference value between the equipment measurement data and the equipment working condition data, namely the data deviation.
Optionally, if the device measurement data is consistent with the device working condition data, the data deviation is 0;
if the equipment measurement data is larger than the equipment working condition data, the data deviation is a difference value of positive values;
and if the equipment measurement data is smaller than the equipment working condition data, the data deviation is a difference value of a negative value.
Optionally, the method for creating the expert database includes:
and creating the expert database according to a fault diagnosis method, an equipment operation principle, various equipment parameters, equipment historical fault analysis cases and working experience of operation, overhaul and maintenance personnel provided by equipment manufacturers.
Optionally, the method for analyzing the state includes:
according to the expert database, when the data deviation of the terminal equipment exceeds the normal working condition threshold range of the terminal equipment, marking the terminal equipment as a fault state;
according to the expert database, when the data deviation of the terminal equipment does not exceed the normal working condition threshold range of the terminal equipment and the equipment measurement data of the terminal equipment are inconsistent with the equipment working condition data, marking the terminal equipment as a state to be maintained;
and marking the terminal equipment as normal state when the data deviation amount of the terminal equipment is 0 according to the expert database.
On the other hand, in order to achieve the above purpose, the present application also provides an online state monitoring system for a speed regulation system device of a hydro-generator set, which comprises a data acquisition module, a data analysis module, a state analysis module and an early warning module;
the data acquisition module is used for acquiring equipment measurement data of each terminal equipment of the hydro-generator set speed regulation system;
the data analysis module is used for carrying out data analysis on the equipment measurement data according to preset equipment working condition data to obtain the data deviation of the current working state of each terminal equipment;
the state analysis module is used for carrying out state analysis on the data deviation by using an expert database to obtain the real-time state of the equipment of each terminal equipment, wherein the real-time state of the equipment comprises a fault state, a state to be maintained and a normal state;
the early warning module is used for sending out equipment fault warning or equipment maintenance prompt according to the real-time state of the equipment, and sending out the equipment fault warning when the terminal equipment is in the fault state; and when the terminal equipment is in a state needing maintenance, sending out the equipment maintenance prompt.
Optionally, the data acquisition module comprises a speed regulator device state data acquisition unit, an oil pressure device state data acquisition unit and a speed regulation executing mechanism state data acquisition unit;
the equipment measurement data comprise speed regulator device state data, oil pressure device state data and speed regulation executing mechanism state data;
the speed regulator device state data acquisition unit is used for acquiring state data of the speed regulator device to obtain the speed regulator device state data;
the oil pressure device state data acquisition unit is used for acquiring state data of an oil pressure device to obtain the state data of the oil pressure device;
the speed regulation executing mechanism state data acquisition unit is used for acquiring state data of the speed regulation executing mechanism to obtain the speed regulation executing mechanism state data.
Optionally, the method for the data analysis module to perform the data analysis includes: and comparing the equipment measurement data of each terminal equipment with the preset equipment working condition data to obtain a difference value between the equipment measurement data and the equipment working condition data, namely the data deviation.
Optionally, the method for performing the state analysis by the state analysis module includes:
according to the expert database, when the data deviation of the terminal equipment exceeds the normal working condition threshold range of the terminal equipment, marking the terminal equipment as a fault state;
according to the expert database, when the data deviation of the terminal equipment does not exceed the normal working condition threshold range of the terminal equipment and the equipment measurement data of the terminal equipment are inconsistent with the equipment working condition data, marking the terminal equipment as a state to be maintained;
and marking the terminal equipment as normal state when the data deviation amount of the terminal equipment is 0 according to the expert database.
The beneficial effects of this application are:
the utility model discloses a hydroelectric set speed governing system equipment on-line state monitoring method and system, through establishing suitable state monitoring data acquisition point at hydroelectric set speed governing system terminal equipment to establish terminal equipment state/performance and distinguish expert's storehouse, not only can monitor on line, calculate terminal equipment's real-time data, can also judge terminal equipment's current operating condition, realize the real-time state aassessment to the unit speed governing system terminal, be convenient for technician's technique discovery equipment trouble, and in time carry out equipment maintenance.
Drawings
For a clearer description of the technical solutions of the present application, the drawings that are required to be used in the embodiments are briefly described below, it being evident that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a hydro-generator set adjusting system according to a first embodiment and a second embodiment of the present application;
fig. 2 is a flow chart of a method for monitoring on-line state of a speed regulation system device of a hydro-generator set according to an embodiment of the present application;
fig. 3 is a terminal device from which the status data of the governor device according to the first embodiment of the present application is specifically derived;
fig. 4 is a terminal device from which hydraulic device status data according to the first embodiment of the present application is specifically derived;
fig. 5 is a terminal device from which speed regulation actuator status data according to the first embodiment of the present application is derived;
FIG. 6 is a schematic diagram of an expert database creation method according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an online state monitoring system of a hydro-generator set speed regulation system device according to a second embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
First, the functions of the adjusting system of the hydroelectric generating set are described:
adjusting and maintaining the unit frequency near the rated frequency, and tracking the power grid frequency to enable the controlled unit to be synchronously integrated into the power grid for operation as soon as possible; the dynamic frequency rising or falling during abrupt load change is reduced as much as possible, and the speed of recovering abnormal frequency to constant frequency is accelerated.
When the controlled hydro-generator is integrated into the power grid for operation, the unit speed regulator regulates the active power of the water turbine according to a given power instruction. And the requirement of secondary frequency modulation of the power grid is met.
And the hydropower station monitoring system is coordinated to complete the working flows of starting up, stopping, increasing/decreasing load, load shedding control, phase modulation, emergency stopping and the like of the controlled unit.
The hydroelectric generating set adjusting system is a closed-loop control system consisting of an adjusting control part, a hydraulic servo system and an adjusting object. The governor control section and the hydraulic follow-up system are commonly referred to as a hydraulic governor.
The working principle of the adjusting system of the hydroelectric generating set is as follows: according to the collected data such as the frequency of a power grid, the rotating speed of the machine set, the running water head of the machine set, the active power of the machine set, the flow rate of the water turbine and the like, the signals such as the frequency setting, the power setting, the opening setting of the servomotor, the actual opening feedback of the servomotor and the like of the water turbine generator set are combined, and the output of the hydraulic servo system is used for controlling the hydraulic servo system to drive the guide vane mechanism and the vane mechanism of the water turbine of the machine set through the logic operation of the water turbine governor adjusting control unit so as to change the excessive flow rate of the water turbine, thereby controlling and adjusting the rotating speed or the active power of the water turbine generator set. The hydraulic turbine governor can complete various control and operation according to the operation control command. A typical block diagram of the hydro-generator set conditioning system is shown in fig. 1.
The first embodiment and the second embodiment of the present application are both described by the functions and principles of the adjustment system of the hydroelectric generating set.
Example 1
As shown in fig. 2, a flow chart of a method for monitoring the on-line state of a speed regulation system device of a hydro-generator set according to an embodiment of the present application is shown, and the main steps are as follows:
firstly, collecting equipment measurement data of each terminal equipment of a hydro-generator set speed regulation system.
In this embodiment, the equipment measurement data includes governor device status data, oil pressure device status data, and governor actuator status data. Wherein the governor device status data is used to reflect a status of the governor device; the oil pressure device state data is used for reflecting the state of the oil pressure device; the state data of the speed regulation executing mechanism are used for reflecting the state of the speed regulation executing mechanism, and the data sources mainly comprise various sensors, state switches and the like.
In this embodiment, the terminal equipment from which the state data of the governor device is specifically derived is shown in fig. 3, the terminal equipment from which the state data of the oil pressure device is specifically derived is shown in fig. 4, and the terminal equipment from which the state data of the governor actuator is specifically derived is shown in fig. 5.
Because of different terminal devices, the data formats of the measurement data may not be consistent, and in order to facilitate subsequent storage, analysis and data transmission, various collected data needs to be processed and converted into a unified digital format.
And then various data in a digital format are stored in a database, so that the subsequent data analysis is facilitated, various data and parameters are conveniently displayed in various display modes, and related technicians can obtain the current running data and state of the equipment in real time.
For the digitized device measurement data in the database, in this embodiment, data analysis is performed by comparing the digitized device measurement data with preset device working condition data (device parameters of the speed regulation system prepared in advance), so as to obtain a difference value between the device measurement data and the device working condition data, namely, a data deviation amount.
In this embodiment, the data deviation amount obtained by data analysis has the following three expression forms:
if the equipment measurement data is consistent with the equipment working condition data, the data deviation amount is 0;
if the equipment measurement data is larger than the equipment working condition data, the data deviation is the difference value of positive values;
if the equipment measurement data is smaller than the equipment working condition data, the data deviation is a difference value of negative values.
And then, carrying out state analysis on the data deviation by using an expert database to obtain the real-time state of the equipment of each terminal equipment, wherein in the embodiment, the real-time state of the equipment comprises a fault state, a state needing maintenance and a normal state.
In this embodiment, as shown in fig. 6, an expert library is created according to the fault diagnosis method, the equipment operation principle, the parameters of the equipment, the equipment history fault analysis case, and the working experience of the operation and maintenance personnel provided by the equipment manufacturer, and the expert library has the functions of equipment state judgment and performance judgment.
And carrying out equipment state analysis and diagnosis based on the expert database. In this embodiment, when the data deviation amount of the terminal device exceeds the normal working condition threshold range of the terminal device, the terminal device is marked as a fault state; when the data deviation of the terminal equipment does not exceed the normal working condition threshold range of the terminal equipment and the equipment measurement data of the terminal equipment are inconsistent with the equipment working condition data, marking the terminal equipment as a state to be maintained; when the data deviation amount of the terminal device is 0, the terminal device is marked as normal.
Furthermore, in this embodiment, the current operation condition of the unit speed regulation system device may be evaluated according to the device state analysis and diagnosis results, the speed regulation system device may be evaluated, the device defect pre-sensing prompt report may be given, and corresponding precautions may be made in advance.
Example two
Fig. 7 is a schematic structural diagram of an online state monitoring system of a speed regulation system device of a hydro-generator set according to a second embodiment of the present application, which mainly includes a data acquisition module, a data analysis module, a state analysis module and an early warning module.
In this embodiment, the data acquisition module is configured to acquire device measurement data of each terminal device of the speed regulation system of the hydro-generator set; the data analysis module is used for carrying out data analysis on the equipment measurement data according to preset equipment working condition data to obtain the data deviation of the current working state of each terminal equipment; the state analysis module is used for carrying out state analysis on the data deviation by using the expert database to obtain the real-time state of the equipment of each terminal equipment, wherein the real-time state of the equipment comprises a fault state, a state to be maintained and a normal state; the early warning module is used for sending out equipment fault warning or equipment maintenance prompt according to the real-time state of the equipment, and sending out equipment fault warning when the terminal equipment is in the fault state; and when the terminal equipment is in a state needing maintenance, sending out an equipment maintenance prompt.
The internal composition and function of the individual modules are described in detail below:
in this embodiment, the data acquisition module includes a speed governor device state data acquisition unit, an oil pressure device state data acquisition unit, and a speed governor actuator state data acquisition unit, and correspondingly, the equipment measurement data includes speed governor device state data, oil pressure device state data, and speed governor actuator state data.
The speed regulator device state data acquisition unit is used for acquiring the state data of the speed regulator device to obtain the speed regulator device state data, and the terminal equipment from which the speed regulator device state data is specifically derived can be seen in fig. 3. The oil pressure device state data acquisition unit is used for acquiring state data of the oil pressure device to obtain the state data of the oil pressure device, and terminal equipment from which the state data of the oil pressure device is specifically obtained can be seen in fig. 4. The speed regulation executing mechanism state data acquisition unit is used for acquiring the state data of the speed regulation executing mechanism to obtain the state data of the speed regulation executing mechanism, and the terminal equipment from which the state data of the speed regulation executing mechanism is specifically sourced can be seen in fig. 5.
Because the data formats of the measurement data may not be consistent among different terminal devices, in order to facilitate subsequent storage, analysis and data transmission, the data analysis module may process various collected data first, convert the data into a unified digital format, store the data in the data, and then analyze the data. The data are stored in a database, so that subsequent data analysis is facilitated, various data and parameters are conveniently displayed in various display modes, and related technicians can obtain current operation data and state of the equipment in real time. For example, a WEB server may be used to present in the form of WEB browsing.
The method for data analysis by the data analysis module comprises the following steps: and comparing the equipment measurement data of each terminal equipment with preset equipment working condition data (the equipment parameters of the speed regulating system prepared in advance) to obtain the difference value between the equipment measurement data and the equipment working condition data, namely the data deviation. The process of data analysis may be performed using a data server.
In this embodiment, the data deviation amount obtained by data analysis has the following three expression forms:
if the equipment measurement data is consistent with the equipment working condition data, the data deviation amount is 0;
if the equipment measurement data is larger than the equipment working condition data, the data deviation is the difference value of positive values;
if the equipment measurement data is smaller than the equipment working condition data, the data deviation is a difference value of negative values.
In this embodiment, an expert database is built in the state analysis module, referring to fig. 6, and the expert database is built according to the fault diagnosis method, the equipment operation principle and parameters of the equipment, the equipment history fault analysis case and the working experience of operation and maintenance personnel provided by the equipment manufacturer, and has the functions of equipment state judgment and performance judgment.
Based on the expert database, the method for carrying out the state analysis by the state analysis module comprises the following steps: when the data deviation of the terminal equipment exceeds the normal working condition threshold range of the terminal equipment, marking the terminal equipment as a fault state; when the data deviation of the terminal equipment does not exceed the normal working condition threshold range of the terminal equipment and the equipment measurement data of the terminal equipment are inconsistent with the equipment working condition data, marking the terminal equipment as a state to be maintained; when the data deviation amount of the terminal device is 0, the terminal device is marked as normal. This step may be accomplished by an engineer workstation.
Finally, an early warning module sends out equipment fault warning or equipment maintenance prompt according to the real-time state of the equipment, and when the terminal equipment is in the fault state, the equipment fault warning is sent out; and when the terminal equipment is in a state needing maintenance, sending out an equipment maintenance prompt.
Furthermore, in this embodiment, the current operation condition of the unit speed regulation system device may be evaluated according to the device state analysis and diagnosis results, the speed regulation system device may be evaluated, the device defect pre-sensing prompt report may be given, and corresponding precautions may be made in advance.
The foregoing embodiments are merely illustrative of the preferred embodiments of the present application and are not intended to limit the scope of the present application, and various modifications and improvements made by those skilled in the art to the technical solutions of the present application should fall within the protection scope defined by the claims of the present application.
Claims (2)
1. The on-line state monitoring method for the speed regulating system equipment of the hydroelectric generating set is characterized by comprising the following steps of:
collecting equipment measurement data of each terminal equipment of a hydro-generator set speed regulation system;
according to preset equipment working condition data, carrying out data analysis on the equipment measurement data to obtain data deviation of the current working state of each terminal equipment;
performing state analysis on the data deviation by using an expert database to obtain real-time equipment states of the terminal equipment, wherein the real-time equipment states comprise a fault state, a state to be maintained and a normal state;
according to the real-time state of the equipment, an equipment fault alarm or an equipment maintenance prompt is sent out, and when the terminal equipment is in a fault state, the equipment fault alarm is sent out; when the terminal equipment is in a state needing maintenance, sending out the equipment maintenance prompt;
the equipment measurement data comprise speed regulator device state data, oil pressure device state data and speed regulation executing mechanism state data;
the speed regulator device state data is used for reflecting the state of the speed regulator device;
the oil pressure device state data is used for reflecting the state of the oil pressure device;
the speed regulation executing mechanism state data are used for reflecting the state of the speed regulation executing mechanism;
the data analysis method comprises the following steps: comparing the equipment measurement data of each terminal equipment with the preset equipment working condition data to obtain a difference value between the equipment measurement data and the equipment working condition data, namely the data deviation;
if the equipment measurement data are consistent with the equipment working condition data, the data deviation is 0;
if the equipment measurement data is larger than the equipment working condition data, the data deviation is a difference value of positive values;
if the equipment measurement data is smaller than the equipment working condition data, the data deviation is a difference value of a negative value;
the expert database creation method comprises the following steps:
the expert database is established according to a fault diagnosis method, an equipment operation principle, various equipment parameters, equipment historical fault analysis cases and working experience of operation, maintenance and repair personnel provided by equipment manufacturers;
the method for analyzing the state comprises the following steps:
according to the expert database, when the data deviation of the terminal equipment exceeds the normal working condition threshold range of the terminal equipment, marking the terminal equipment as a fault state;
according to the expert database, when the data deviation of the terminal equipment does not exceed the normal working condition threshold range of the terminal equipment and the equipment measurement data of the terminal equipment are inconsistent with the equipment working condition data, marking the terminal equipment as a state to be maintained;
and marking the terminal equipment as normal state when the data deviation amount of the terminal equipment is 0 according to the expert database.
2. The on-line state monitoring system of the hydro-generator set speed regulation system equipment is characterized by comprising a data acquisition module, a data analysis module, a state analysis module and an early warning module;
the data acquisition module is used for acquiring equipment measurement data of each terminal equipment of the hydro-generator set speed regulation system;
the data analysis module is used for carrying out data analysis on the equipment measurement data according to preset equipment working condition data to obtain the data deviation of the current working state of each terminal equipment;
the state analysis module is used for carrying out state analysis on the data deviation by using an expert database to obtain the real-time state of the equipment of each terminal equipment, wherein the real-time state of the equipment comprises a fault state, a state to be maintained and a normal state;
the early warning module is used for sending out equipment fault warning or equipment maintenance prompt according to the real-time state of the equipment, and sending out the equipment fault warning when the terminal equipment is in the fault state; when the terminal equipment is in a state needing maintenance, sending out the equipment maintenance prompt;
the data acquisition module comprises a speed regulator device state data acquisition unit, an oil pressure device state data acquisition unit and a speed regulation executing mechanism state data acquisition unit;
the equipment measurement data comprise speed regulator device state data, oil pressure device state data and speed regulation executing mechanism state data;
the speed regulator device state data acquisition unit is used for acquiring state data of the speed regulator device to obtain the speed regulator device state data;
the oil pressure device state data acquisition unit is used for acquiring state data of an oil pressure device to obtain the state data of the oil pressure device;
the speed regulation executing mechanism state data acquisition unit is used for acquiring state data of the speed regulation executing mechanism to obtain the speed regulation executing mechanism state data;
the method for the data analysis module to perform the data analysis comprises the following steps: comparing the equipment measurement data of each terminal equipment with the preset equipment working condition data to obtain a difference value between the equipment measurement data and the equipment working condition data, namely the data deviation;
if the equipment measurement data are consistent with the equipment working condition data, the data deviation is 0;
if the equipment measurement data is larger than the equipment working condition data, the data deviation is a difference value of positive values;
if the equipment measurement data is smaller than the equipment working condition data, the data deviation is a difference value of a negative value;
the expert database creation method comprises the following steps:
the expert database is established according to a fault diagnosis method, an equipment operation principle, various equipment parameters, equipment historical fault analysis cases and working experience of operation, maintenance and repair personnel provided by equipment manufacturers;
the method for the state analysis module to perform the state analysis comprises the following steps:
according to the expert database, when the data deviation of the terminal equipment exceeds the normal working condition threshold range of the terminal equipment, marking the terminal equipment as a fault state;
according to the expert database, when the data deviation of the terminal equipment does not exceed the normal working condition threshold range of the terminal equipment and the equipment measurement data of the terminal equipment are inconsistent with the equipment working condition data, marking the terminal equipment as a state to be maintained;
and marking the terminal equipment as normal state when the data deviation amount of the terminal equipment is 0 according to the expert database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210064284.5A CN114294152B (en) | 2022-01-20 | 2022-01-20 | On-line state monitoring method and system for speed regulating system equipment of hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210064284.5A CN114294152B (en) | 2022-01-20 | 2022-01-20 | On-line state monitoring method and system for speed regulating system equipment of hydroelectric generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114294152A CN114294152A (en) | 2022-04-08 |
| CN114294152B true CN114294152B (en) | 2024-03-22 |
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| CN108035838A (en) * | 2017-12-07 | 2018-05-15 | 武汉四创自动控制技术有限责任公司 | Full factory's Turbine Governor System health state evaluation and optimization method |
| CN109358587A (en) * | 2018-11-05 | 2019-02-19 | 国电南京自动化股份有限公司 | A kind of Condition-based Maintenance of Hydroelectric Sets decision-making technique and system |
| CN110531656A (en) * | 2019-08-13 | 2019-12-03 | 大唐水电科学技术研究院有限公司 | A kind of monitoring system and method for Hydropower Unit performance |
| CN112196717A (en) * | 2020-08-18 | 2021-01-08 | 华电电力科学研究院有限公司 | State monitoring and fault diagnosis method for hydraulic system of hydraulic turbine governor |
| CN113187650A (en) * | 2021-04-07 | 2021-07-30 | 武汉四创自动控制技术有限责任公司 | Intelligent hydraulic power plant whole-plant hydraulic turbine speed regulation system and diagnosis method |
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| CN108035838A (en) * | 2017-12-07 | 2018-05-15 | 武汉四创自动控制技术有限责任公司 | Full factory's Turbine Governor System health state evaluation and optimization method |
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| CN112196717A (en) * | 2020-08-18 | 2021-01-08 | 华电电力科学研究院有限公司 | State monitoring and fault diagnosis method for hydraulic system of hydraulic turbine governor |
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