CN111190375B - Intelligent monitoring system and monitoring method for hydropower station equipment - Google Patents
Intelligent monitoring system and monitoring method for hydropower station equipment Download PDFInfo
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- CN111190375B CN111190375B CN202010072392.8A CN202010072392A CN111190375B CN 111190375 B CN111190375 B CN 111190375B CN 202010072392 A CN202010072392 A CN 202010072392A CN 111190375 B CN111190375 B CN 111190375B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/028—Means for indicating or recording specially adapted for thermometers arrangements for numerical indication
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
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Abstract
The embodiment of the invention provides an intelligent monitoring system and a monitoring method for hydropower station equipment. The system comprises: the system comprises a wireless temperature sensor, a data acquisition terminal and a software background; the wireless temperature sensor is used for measuring the temperature of the high-voltage electrical equipment in real time and converting a temperature signal into a digital signal; the data acquisition terminal is used for receiving, processing and forwarding digital signals sent by the plurality of wireless temperature sensors; the software background is used for monitoring and displaying the temperature of the high-voltage electrical equipment in real time, deeply excavating data and intelligently managing and controlling abnormal temperature rise. The embodiment of the invention can finish modeling of the equipment and diagnosis and early warning of abnormal temperature rise by separating from the physical structure of the equipment and collecting the temperature information of the equipment.
Description
Technical Field
The invention relates to the technical field of hydropower monitoring, in particular to an intelligent monitoring system and a monitoring method for hydropower station equipment.
Background
In the field of power supply and distribution, hydropower stations are various in equipment types, wide in arrangement space and complex in system composition, and high-voltage electrical equipment is used as an important component, so that the reliability and safety of the high-voltage electrical equipment are related to the safe and stable operation of the whole hydropower station. Important parts such as switch contact parts, conductive connection parts, cable heads and the like of high-voltage electrical equipment are inevitably subjected to contact heating and electric corrosion due to surface oxidation, corrosion, bolt loosening and the like in the long-term operation process, and serious faults such as short circuit and the like can be caused by burning and melting connection parts. In recent years, overheating accidents of multiple units, high-voltage switches, buses and the like occur in hydropower stations, fire disasters and non-accident shutdowns are caused, and the normal operation of the hydropower stations is influenced. The temperature is an important external characterization parameter of the running state of the equipment, and the health of the working state of the detection equipment can be effectively and accurately judged according to the temperature and the temperature rise of the equipment in the running process.
At present, the traditional temperature indicating wax sheet method and the regular measurement mode of an infrared thermometer are adopted for the temperature monitoring of electrical equipment, the accuracy of the traditional temperature indicating wax sheet method is low, and the influence of the infrared thermometer on the environment is large; meanwhile, the two modes belong to non-online temperature monitoring, depend on manual regular inspection, and cannot reflect the temperature change process and find equipment abnormality in time; the temperature measurement is carried out at a short distance, the safety factor is low, the monitoring precision is also influenced by personnel and external factors, in addition, places which cannot be reached, such as dead angles of some equipment, cannot be detected, and the data cannot be quantized.
Disclosure of Invention
The embodiment of the invention provides an intelligent monitoring system and a monitoring method for hydropower station equipment, which are used for solving the problems that the traditional temperature monitoring method adopted in the prior art causes low measurement precision, is easily influenced by the environment and cannot guarantee the personal safety of operators.
In a first aspect, an embodiment of the present invention provides an intelligent monitoring system for a hydropower station device, including:
the system comprises a wireless temperature sensor, a data acquisition terminal and a software background; wherein:
the wireless temperature sensor is connected with the data acquisition terminal and the data acquisition terminal is connected with the software background;
the wireless temperature sensor is used for measuring the temperature of the high-voltage electrical equipment in real time and converting a temperature signal into a digital signal;
the data acquisition terminal is used for receiving, processing and forwarding digital signals sent by the plurality of wireless temperature sensors;
the software background is used for monitoring and displaying the temperature of the high-voltage electrical equipment in real time, deeply excavating data and intelligently managing and controlling abnormal temperature rise.
Preferably, the wireless temperature sensor comprises a wireless module and a temperature sensing unit; wherein:
the wireless module and the temperature sensing unit are mutually connected;
the temperature sensing unit is used for installing a wireless temperature sensor of a preset type to realize real-time acquisition and electric signal conversion of the temperature of the high-voltage electrical equipment;
the wireless module comprises a power supply unit, a control unit and a data transmission unit, wherein the power supply unit is used for supplying power to the wireless module and the temperature sensing unit, the control unit is used for controlling the acquisition frequency of the temperature sensing unit, and the data transmission unit is used for transmitting a signal from the temperature sensing unit to the data acquisition terminal.
Preferably, the data acquisition terminal comprises a wireless transmitting and receiving module, a data storage module, a micro-processing module and a data forwarding module; wherein:
the wireless transmitting and receiving module is used for receiving monitoring data sent by a plurality of wireless temperature sensors in a preset area range;
the micro-processing module is used for preprocessing the monitoring data to obtain preprocessed monitoring data;
the data storage module is used for locally storing the preprocessing monitoring data;
and the data forwarding module is used for uploading the monitoring data to a server side for storage.
Preferably, the software background comprises a presentation layer, a service layer and a data layer; wherein:
the presentation layer is used for realizing at least one of a data and image display function, a statistical query function and an abnormal condition warning function and realizing man-machine interaction between a user and a website end;
the service layer is used for packaging the service rules and data access of the client in the traditional mode into a service object and deploying the service object on the application server;
and the data layer is used for providing connection with a background database and all read-write operations.
In a second aspect, an embodiment of the present invention provides a monitoring method for a hydropower station device, including:
setting an automatic acquisition task, and acquiring temperature information according to a preset sampling frequency;
acquiring a data packet sent by a data acquisition terminal, extracting temperature information in the data packet, drawing a temperature real-time curve, carrying out online monitoring on the real-time temperature of high-voltage electrical equipment to obtain real-time temperature monitoring data, and storing the real-time temperature monitoring data to a server;
when the temperature absolute value or the temperature change rate of the high-voltage electrical equipment exceeds a preset upper limit threshold value, generating over-temperature early warning information, sending the over-temperature early warning information to a monitoring terminal through a short message module, and storing the over-temperature early warning information to the server.
Preferably, the method further comprises:
and monitoring the working state of the data acquisition terminal.
Preferably, the storing the real-time temperature monitoring data to a server specifically includes:
the server manages the real-time temperature monitoring data and stores the real-time temperature monitoring data to a database at regular time;
and recording a plurality of data points corresponding to the real-time temperature monitoring data in the database according to a preset period to form a historical database, and displaying data according to a preset mode.
Preferably, the storing the over-temperature warning information to the server specifically includes:
and retrieving and inquiring the over-temperature early warning information according to a preset grade, providing a display mode according to a preset graphic mode, and providing data export of the over-temperature early warning information.
According to the intelligent monitoring system and the monitoring method for the hydropower station equipment, provided by the embodiment of the invention, the modeling of the equipment, the diagnosis and the early warning of abnormal temperature rise can be completed by separating from the physical structure of the equipment and collecting the temperature information of the equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a system according to an embodiment of the present invention;
fig. 2 is a system network topology diagram provided by the embodiment of the present invention;
FIG. 3 is a schematic diagram of a wireless temperature sensor according to an embodiment of the present invention;
FIG. 4 is a three-layer architecture diagram of a software background provided by an embodiment of the present invention;
fig. 5 is a flow chart of a monitoring method for a hydroelectric power plant according to an embodiment of the present invention;
FIG. 6 is a functional block diagram of a system according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a temperature management and control process of a device according to an embodiment of the present invention;
fig. 8 is a network topology diagram of a short message alarm module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems in the prior art, the embodiment of the invention provides an intelligent monitoring system and a monitoring method for hydropower station equipment, which can meet the intelligent control of abnormal temperature rise conditions of high-voltage electrical equipment (high-voltage cables, high-voltage switch cabinets, hydraulic generators, 10kV motors, transformers, capacitors, other key equipment and the like) and various environments (closed equipment interiors, indoor equipment, outdoor equipment and the like) of the hydropower station, and realize intelligent sensing, intelligent analysis and diagnosis and intelligent decision support of equipment temperature. The system realizes early warning of faults by continuously monitoring the temperature of the nodes of the electrical equipment, provides timely warning when faults occur, and provides detailed monitoring data of fault analysis so as to ensure safe and reliable operation of the electrical equipment.
Fig. 1 is a structural diagram of a system provided in an embodiment of the present invention, as shown in fig. 1, including:
the system comprises a wireless temperature sensor, a data acquisition terminal and a software background; wherein:
the wireless temperature sensor is connected with the data acquisition terminal and the data acquisition terminal is connected with the software background;
the wireless temperature sensor is used for measuring the temperature of the high-voltage electrical equipment in real time and converting a temperature signal into a digital signal;
the data acquisition terminal is used for receiving, processing and forwarding digital signals sent by the plurality of wireless temperature sensors;
the software background is used for monitoring and displaying the temperature of the high-voltage electrical equipment in real time, deeply excavating data and intelligently managing and controlling abnormal temperature rise.
Specifically, the system consists of a wireless temperature sensor, a data acquisition terminal and a software background. The wireless temperature sensor is used for measuring the temperature of the high-voltage electrical equipment in real time and converting a temperature signal into a digital signal. The data acquisition terminal is used for receiving, processing and forwarding the digital signals of the plurality of sensors. The software background is used for realizing real-time monitoring and displaying of the temperature of the equipment and deep mining of data and realizing intelligent control of abnormal temperature rise conditions.
The system adopts a ZigBee wireless network mode to acquire the temperature of the equipotential equipment of the wireless temperature sensor and convert the equipotential equipment into digital signals to be transmitted to the data acquisition terminal, and the ZigBee wireless network communication mode can reduce the power consumption of the equipment and is beneficial to improving the continuous working time of the wireless temperature sensor; and the data acquisition terminal transmits the processed temperature information to the software background in wired, 4G or WIFI or other communication modes. The overall network topology is shown in fig. 2.
The system provided by the embodiment of the invention monitors and acquires data of field equipment through hardware equipment, and excavates, statistically analyzes, diagnoses and displays the data through a software platform to form an intelligent management and control system for the equipment temperature of the hydraulic power plant.
Based on the above embodiment, the wireless temperature sensor includes a wireless module and a temperature sensing unit; wherein:
the wireless module and the temperature sensing unit are mutually connected;
the temperature sensing unit is used for installing a wireless temperature sensor of a preset type to realize real-time acquisition and electric signal conversion of the temperature of the high-voltage electrical equipment;
the wireless module comprises a power supply unit, a control unit and a data transmission unit, wherein the power supply unit is used for supplying power to the wireless module and the temperature sensing unit, the control unit is used for controlling the acquisition frequency of the temperature sensing unit, and the data transmission unit is used for transmitting a signal from the temperature sensing unit to the data acquisition terminal.
Specifically, a wireless temperature sensor is designed for the problems of equipment monitoring dead angles, newly laid cables, multi-point transmission and the like. The wireless temperature sensor is composed of a wireless module and a temperature sensing unit, the two modules are separately designed and connected in a plug-in mode, and maintenance and replacement are facilitated. The temperature sensing unit is used for installing various conventional temperature sensors (such as an infrared temperature sensor, a thermocouple sensor and the like) and realizing real-time acquisition of the temperature of the equipment and conversion of electric signals. The wireless module is provided with a power supply unit, a control unit and a data transmission unit, the power supply unit is designed to adopt two power supply modes of a storage battery and a 220V power supply, and can meet two power supply modes of a wired power supply mode and a wireless power supply mode and supply power to the wireless module and the temperature sensor; the control unit is used for controlling the acquisition frequency of the sensor; the data transmission unit is used for transmitting the signals from the temperature sensor to the intelligent acquisition terminal. The schematic diagram of the wireless temperature sensor is shown in fig. 3.
After the wireless temperature sensor measures the temperature, the temperature data is transmitted to the data acquisition terminal in a wireless mode and is mainly installed near or on the surface of a cable connection, a transformer and a switch which are easy to generate heat. Each wireless temperature sensor has a unique ID number, and the installation site of each sensor is recorded when the wireless temperature sensor is actually installed and used and is recorded into a temperature detection workstation computer database together with the number. The sensor automatically transmits the temperature data of the monitoring point once at regular intervals (which can be preset), and immediately alarms when the temperature is abnormal, and the sensor is not limited by a transmission period.
The embodiment of the invention solves the problems of real-time monitoring of dead angles of equipment and cable laying and system reconstruction of newly added measuring points, realizes centralized data acquisition of a multi-source temperature sensor, ensures synchronization of data clocks and realizes active interactive acquisition of temperature rise data.
Based on any one of the above embodiments, the data acquisition terminal comprises a wireless transmitting and receiving module, a data storage module, a micro-processing module and a data forwarding module; wherein:
the wireless transmitting and receiving module is used for receiving monitoring data sent by a plurality of wireless temperature sensors in a preset area range;
the micro-processing module is used for preprocessing the monitoring data to obtain preprocessed monitoring data;
the data storage module is used for locally storing the preprocessing monitoring data;
and the data forwarding module is used for uploading the monitoring data to a server side for storage.
Specifically, the data acquisition terminal is installed on site and is responsible for receiving, storing, processing and forwarding monitoring signals sent by each wireless temperature sensor in a certain area. The plurality of temperature sensors are distributed around the data acquisition terminal, and the temperature sensors can be added, deleted and moved in an effective communication range. The data acquisition terminal comprises a wireless transmitting and receiving module, a data storage module, a micro-processing module and a data forwarding module. The wireless transmitting and receiving module is used for receiving monitoring data sent by each wireless temperature sensor in a certain area, and the wireless transmitting and receiving module and the wireless module of each wireless sensor adopt a ZigBee transmission protocol for data communication. After the data are collected and the collected data are preprocessed through the micro-processing module, on one hand, the data are directly stored in place through the data storage module; on the other hand, the collected real-time signals can be uploaded to a server side for storage through the data forwarding module in a WIFI or 4G network or wired mode. In consideration of the universality and expandability of the data acquisition terminal, other types of sensor monitoring data can be conveniently accessed in the later period, and the data acquisition terminal only stores the original monitoring data and does not analyze the monitoring data, so that the data analysis is completed at the server side, and the requirement of expandability can be met no matter what types of sensors are accessed in the later period under the condition that the data acquisition terminal is not replaced and the functions of the data acquisition terminal are not required to be adjusted.
The solution of the Internet of things which is constructed by the embodiment of the invention and is suitable for the site practice of the hydropower station is constructed by effectively fusing the wired transmission technology and the wireless transmission technology, constructing an online real-time transmission network which meets the requirement of an abnormal temperature rise system of the hydropower station equipment and providing a test point for the intelligent development of the hydropower station.
Based on any embodiment, the software background comprises a presentation layer, a service layer and a data layer; wherein:
the presentation layer is used for realizing at least one of a data and image display function, a statistical query function and an abnormal condition warning function and realizing man-machine interaction between a user and a website end;
the service layer is used for packaging the service rules and data access of the client in the traditional mode into a service object and deploying the service object on the application server;
and the data layer is used for providing connection with a background database and all read-write operations.
Specifically, the intelligent monitoring and analyzing system software for abnormal temperature rise of the hydropower station equipment is deployed at a user computer end. The system adopts a B/S network architecture for users to use through an IE browser (version above IE 8). The system function has expandability, compatibility and inheritance, and supports other power stations which are gradually expanded to be put into operation in the future.
In order to improve the stability, the safety, the expansibility and the adaptability of the system, a software system adopts the design idea of a Three-layer structure (Three Ties), an information system function list and function layers are definite, functions are hashed in the layers, and one or more subsystems are formed according to the functions and the application characteristics. The ability to drill down and free up software designs and adaptability to complex systems. The three-layer architecture is shown in fig. 4 and is divided into a presentation layer, a service layer, and a data layer.
The presentation layer realizes the functions of data and image display, statistical query, abnormal condition alarm and the like, and realizes the man-machine interaction between the user and the website. The service layer encapsulates the service rules, data access and the like of the client side in the traditional mode into service objects to be deployed on the application server, the service objects are independently responsible for the calculation tasks of service logic, data analysis, processing, abnormal temperature rise diagnosis and the like are achieved, and the burden and the maintenance cost of the network station side and the database server side of the presentation layer are favorably reduced. The data layer provides connection with a background database and all read-write operations, including temperature measurement data, system resource parameters, equipment running states/parameters and the like.
According to the embodiment of the invention, most of operations can be directly completed on the software interface by showing the specific structure of the software background, and the method is simple to operate, good in man-machine interaction and small in workload.
Fig. 5 is a flowchart of a monitoring method for a hydroelectric power plant according to an embodiment of the present invention, as shown in fig. 5, including:
s1, setting an automatic acquisition task, and acquiring temperature information according to a preset sampling frequency;
s2, acquiring a data packet sent by a data acquisition terminal, extracting temperature information in the data packet, drawing a temperature real-time curve, carrying out online monitoring on the real-time temperature of the high-voltage electrical equipment to obtain real-time temperature monitoring data, and storing the real-time temperature monitoring data to a server;
and S3, when the absolute temperature value or the temperature change rate of the high-voltage electrical equipment exceeds a preset upper limit threshold, generating over-temperature early warning information, sending the over-temperature early warning information to a monitoring terminal through a short message module, and storing the over-temperature early warning information to the server.
Wherein, the method also comprises:
and monitoring the working state of the data acquisition terminal.
Specifically, the embodiment of the invention provides a monitoring method for hydropower station equipment, which aims at the defect problems of heating, overheating and the like of high-voltage electrical equipment of the hydropower station, develops functions of intelligent monitoring, early warning, auxiliary analysis and the like of abnormal temperature rise of the equipment, provides support for forming a complete solution of early prejudgment of abnormal temperature rise faults and intelligent operation and maintenance decision of the hydropower station equipment, and the functional architecture of the system is shown in fig. 6.
Step S1, the system sets an automatic acquisition task and acquires temperature information at regular time according to a set sampling frequency;
step S2, a background analyzes the data packet transmitted by the intelligent acquisition terminal, extracts the temperature information in the data packet, draws a temperature real-time curve, and carries out online monitoring on the power station equipment and the real-time temperature;
and step S3, presetting a temperature alarm threshold, when the absolute value of the temperature or the change rate of the temperature exceeds the upper limit and overtemperature early warning occurs, automatically sending complete early warning information to the mobile phone of a responsible person through a short message module by the system at the first time, finding and eliminating faults in time, improving corresponding emergency processing capacity, and monitoring the working state (electric quantity) of the data acquisition terminal. The temperature control flow is shown in fig. 7, the information sent by the short message module is sent to a specific mobile phone through the public communication base station, the core function of the function control and decision making is realized through the short message alarm module in the upper computer software, and the network topology of the short message alarm module is shown in fig. 8.
The intelligent monitoring and analyzing method for the abnormal temperature rise of the equipment, provided by the embodiment of the invention, can realize the formation of a hydropower station high-voltage equipment monitoring network, show the running state of a layout scene, solve the problems of untimely information extraction and difficult data acquisition in the traditional operation and detection mode, and effectively improve the operation and detection efficiency of the high-voltage equipment of the hydropower plant.
Based on any one of the above embodiments, the storing the real-time temperature monitoring data to a server specifically includes:
the server manages the real-time temperature monitoring data and stores the real-time temperature monitoring data to a database at regular time;
and recording a plurality of data points corresponding to the real-time temperature monitoring data in the database according to a preset period to form a historical database, and displaying data according to a preset mode.
Specifically, the system stores real-time temperature monitoring data to a database server, the computer manages the data, the data are stored in the database at regular time, corresponding points in the real-time database are recorded according to a period set by a user to form a historical database, curve display of minutes, hours and days, report printing, retrieval and historical data query of equipment and set time intervals (specific time periods/days/weeks/months/quarters) are supported, various display modes such as lists and curves are provided, and the user can conveniently check the data.
According to the embodiment of the invention, the temperature rise condition of the power plant equipment can be monitored in real time, so that a hydropower station high-voltage equipment monitoring network is formed, and the running state of a layout scene is displayed. The frequency of polling the equipment by field operation and maintenance personnel is reduced, the working strength of the staff is reduced, and the staff is prevented from being exposed in a strong electromagnetic field working environment for a long time.
Based on any one of the above embodiments, the storing the over-temperature warning information to the server specifically includes:
and retrieving and inquiring the over-temperature early warning information according to a preset grade, providing a display mode according to a preset graphic mode, and providing data export of the over-temperature early warning information.
Specifically, the system stores the early warning information in the server, supports retrieval and query statistics of areas, voltage levels, equipment, early warning grades, alarm types and set time intervals (specific time periods/days/weeks/months/quarters), provides multiple display modes such as bar charts and pie charts, is convenient for a user to check, and can lead the table to the EXCEL table.
Besides the above functions, the embodiment of the present invention further provides displaying of the operation state based on the layout scene of the hydropower station: the data that combines infrared to patrol and examine, to important power equipment such as generating set, transformer, carry out visual show to a plurality of equipment temperature information of appointed region (certain circuit, region) to show power station running state.
Advanced analysis functions: and generating a trend graph aiming at each temperature measuring point according to the temperature acquisition data, associating related equipment, temperature data and the like, and performing transverse comparative analysis and longitudinal comparative analysis. The method comprises multiple flexible modes such as multi-day curve comparison, temperature comparison between different phases of the same equipment, annual curve, monthly curve and the like.
Operation and maintenance decision support: based on an expert system, combined with known equipment characteristics, historical operation records, expert experience and the like, the method carries out prediction and preliminary judgment on the faults which may occur or have occurred in various high-voltage electrical equipment, roughly determines the nature, degree and position of the faults, points out the possible development trend and consequences of the faults, provides preliminary treatment measures and suggestions, and can provide decision support for the patrol inspection of the high-voltage equipment of the hydropower station and realize the intelligent decision of fault operation and maintenance.
Fault diagnosis knowledge base: based on information such as historical data, fault cases, expert theories, equipment types and the like, training an equipment type abnormal temperature rise defect model and an equipment defect diagnosis criterion, constructing an expert system for classifying and classifying abnormal temperature rise diagnosis defects, setting equipment categories and part characteristics, setting a temperature threshold and an alarm type, forming a fault diagnosis knowledge base and realizing abnormal diagnosis.
Basic information management is also provided: establishing perfect system parameter setting, establishing an electrical equipment temperature monitoring and management network, and managing various equipment files such as electrical equipment, a wireless temperature sensor, a data acquisition terminal and the like related to temperature monitoring; issuing remote parameters: the method comprises the steps of sensor temperature calibration, various early warning values, time, temperature acquisition frequency, sensor transmitting power, signal receiving threshold and the like. And the management of the early warning model and the management of the self-defined report and the workbench are realized. The system may process, display, print, store, alert, Web post, etc. the data.
The embodiment of the invention is based on an expert system, the nature, the degree and the position of a fault are roughly determined by comparing an abnormal temperature rise signal of equipment with historical data, the possible development trend and the possible consequences of the fault are pointed out, a primary processing measure and a primary suggestion are provided, a decision support can be provided for the routing inspection of high-voltage equipment of a hydropower station, the intelligent decision of fault operation and maintenance is realized, the system has the functions of a user-defined interface and a report form, a user can configure a working interface with corresponding authority according to the difference of roles and responsibilities, the user-defined derivation is carried out on the associated data, the use of the user is facilitated, the workload of personnel is effectively reduced, the overall operation and maintenance level of the hydropower station is improved, and the safe and stable operation of the hydropower station is ensured; the system also reserves an external data interface, has flexible interface and supports hardware interfaces such as a serial port, a network interface and the like; the system supports various communication protocols such as CDT, 101, 104, 61850 and the like, is convenient for system integration, is convenient for other systems (state detection, monitoring system, access control system and the like) of the hydropower station to utilize the data of the system, and provides data support for the development of intelligent hydropower.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An intelligent monitoring system for a hydropower device, comprising: the system comprises a wireless temperature sensor, a data acquisition terminal and a software background; wherein:
the wireless temperature sensor is connected with the data acquisition terminal and the data acquisition terminal is connected with the software background;
the wireless temperature sensor is used for measuring the temperature of the high-voltage electrical equipment in real time and converting a temperature signal into a digital signal;
the data acquisition terminal is used for receiving, processing and forwarding digital signals sent by the plurality of wireless temperature sensors;
the software background is used for monitoring and displaying the temperature of the high-voltage electrical equipment in real time, deeply excavating data and intelligently managing and controlling abnormal temperature rise;
the software background comprises a presentation layer, a service layer and a data layer, wherein:
the presentation layer is used for realizing at least one of a data and image display function, a statistical query function and an abnormal condition warning function and realizing man-machine interaction between a user and a website end;
the service layer is used for packaging the service rules and data access of the client in the traditional mode into a service object and deploying the service object on the application server;
the data layer is used for providing connection with a background database and all read-write operations;
providing an operation state display based on a hydropower station layout scene; based on an expert system and historical data, forecasting and primarily judging the fault, indicating possible development trend and consequence of the fault, providing primary processing measures and suggestions, and providing decision support; training an equipment type abnormal temperature rise defect model and an equipment defect diagnosis criterion based on historical data, fault cases, expert theories and equipment type information, constructing an abnormal temperature rise diagnosis defect grading and classifying expert system, setting equipment categories and part characteristics, and setting a temperature threshold and an alarm type to form a fault diagnosis knowledge base.
2. The intelligent monitoring system for hydroelectric power plant equipment of claim 1, wherein the wireless temperature sensor comprises a wireless module and a temperature sensing unit; wherein:
the wireless module and the temperature sensing unit are mutually connected;
the temperature sensing unit is used for installing a wireless temperature sensor of a preset type to realize real-time acquisition and electric signal conversion of the temperature of the high-voltage electrical equipment;
the wireless module comprises a power supply unit, a control unit and a data transmission unit, wherein the power supply unit is used for supplying power to the wireless module and the temperature sensing unit, the control unit is used for controlling the acquisition frequency of the temperature sensing unit, and the data transmission unit is used for transmitting a signal from the temperature sensing unit to the data acquisition terminal.
3. The intelligent monitoring system for hydropower station equipment according to claim 1, wherein the data acquisition terminal comprises a wireless transmitting and receiving module, a data storage module, a micro-processing module and a data forwarding module; wherein:
the wireless transmitting and receiving module is used for receiving monitoring data sent by a plurality of wireless temperature sensors in a preset area range;
the micro-processing module is used for preprocessing the monitoring data to obtain preprocessed monitoring data;
the data storage module is used for locally storing the preprocessing monitoring data;
and the data forwarding module is used for uploading the monitoring data to a server side for storage.
4. A monitoring method for a hydroelectric power plant, comprising:
setting an automatic acquisition task, and acquiring temperature information according to a preset sampling frequency;
acquiring a data packet sent by a data acquisition terminal, extracting temperature information in the data packet, drawing a temperature real-time curve, carrying out online monitoring on the real-time temperature of high-voltage electrical equipment to obtain real-time temperature monitoring data, and storing the real-time temperature monitoring data to a server;
when the temperature absolute value or the temperature change rate of the high-voltage electrical equipment exceeds a preset upper limit threshold, generating over-temperature early warning information, sending the over-temperature early warning information to a monitoring terminal through a short message module, and storing the over-temperature early warning information to the server;
providing an operation state display based on a hydropower station layout scene; based on an expert system and historical data, forecasting and primarily judging the fault, indicating possible development trend and consequence of the fault, providing primary processing measures and suggestions, and providing decision support; training an equipment type abnormal temperature rise defect model and an equipment defect diagnosis criterion based on historical data, fault cases, expert theories and equipment type information, constructing an abnormal temperature rise diagnosis defect grading and classifying expert system, setting equipment categories and part characteristics, and setting a temperature threshold and an alarm type to form a fault diagnosis knowledge base.
5. A monitoring method for a hydroelectric power plant installation according to claim 4 in which the method further comprises:
and monitoring the working state of the data acquisition terminal.
6. The monitoring method for a hydroelectric power plant apparatus of claim 4, wherein storing the real-time temperature monitoring data to a server specifically comprises:
the server manages the real-time temperature monitoring data and stores the real-time temperature monitoring data to a database at regular time;
and recording a plurality of data points corresponding to the real-time temperature monitoring data in the database according to a preset period to form a historical database, and displaying data according to a preset mode.
7. The monitoring method for the hydropower station equipment according to claim 4, wherein the storing the over-temperature warning information to the server specifically includes:
and retrieving and inquiring the over-temperature early warning information according to a preset grade, providing a display mode according to a preset graphic mode, and providing data export of the over-temperature early warning information.
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| CN112350442A (en) * | 2020-11-13 | 2021-02-09 | 国网江西省电力有限公司柘林水电厂 | Hydropower house electrical equipment insulation state monitoring system based on multiple sensing terminals |
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