CN112305982A - Switch cabinet based on-line monitoring technology - Google Patents
Switch cabinet based on-line monitoring technology Download PDFInfo
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- CN112305982A CN112305982A CN202011466478.5A CN202011466478A CN112305982A CN 112305982 A CN112305982 A CN 112305982A CN 202011466478 A CN202011466478 A CN 202011466478A CN 112305982 A CN112305982 A CN 112305982A
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- sensor
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- temperature
- partial discharge
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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
- G05B19/048—Monitoring; Safety
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Automation & Control Theory (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Human Computer Interaction (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention belongs to the field of switch cabinets, and particularly relates to a switch cabinet based on an online monitoring technology. The switch cabinet is internally provided with a passive wireless temperature measuring sensor, a partial discharge sensor, a temperature and humidity sensor and a current acquisition sensor, and also comprises a communication manager, a router, a monitoring host, a background system server and a telecontrol machine; the wireless temperature measuring sensor, the partial discharge sensor, the temperature and humidity sensor and the current acquisition sensor are connected with the communication management machine, the communication management machine is connected with the router, and the router is further connected with the monitoring host, the background system server and the telecontrol machine. According to the invention, the health condition of the switch cabinet is reflected in real time by continuously monitoring the switch cabinet in real time for 24 hours, and meanwhile, the real-time monitored temperature and partial discharge data are comprehensively analyzed, so that the insulation degradation degree of equipment is early warned, the hidden danger and the defect of the equipment are discovered in advance, and the occurrence of faults is avoided.
Description
Technical Field
The invention belongs to the field of switch cabinets, and particularly relates to a switch cabinet based on an online monitoring technology.
Background
Independent research is carried out on wireless temperature measurement and switch cabinet live-line detection by multiple scientific research units and enterprises at home and abroad, but no specific research and large-scale application are available for realizing comprehensive analysis of the operation state of the switch cabinet by combining wireless temperature measurement and partial discharge online monitoring.
The temperature measuring device commonly used by various domestic enterprises at present has the modes of active wireless temperature measurement, induction power taking, optical fiber temperature measurement and the like. The active wireless temperature measurement method adopts a battery for power supply, the size of the sensor is large, the service life is about 2-8 years, the measurement precision is low, certain potential safety hazards exist, and power failure maintenance is required to be carried out regularly; the induction power taking method obtains a power supply by performing electromagnetic induction on the current transformer, the sensor has a large size, the service life is about 10 years, the measurement precision is low, certain potential safety hazards exist, and power failure maintenance needs to be performed regularly; the optical fiber temperature measurement method adopts active power supply, the size of the sensor is large, the service life is 5-8 years, the data transmission needs to adopt wired transmission, the measurement precision is high, the power failure maintenance is still required to be carried out regularly, and the passive wireless temperature measurement device is adopted in the embodiment to carry out real-time temperature measurement and insulation analysis judgment on the movable contact and the static contact of the switch cabinet.
The local discharge live-line test of the domestic existing switch cabinet is mainly realized by offline manual inspection. A certain partial discharge signal of the switch cabinet is patrolled and examined through the handheld partial discharge tester and partial discharge signal receiving sensors of different types. The local discharge belt has low test efficiency, consumes a large amount of manpower and material resources, and simultaneously cannot accurately judge the development trend of the local discharge in the switch cabinet due to offline data acquisition at a certain moment.
Disclosure of Invention
The switch cabinet based on the online monitoring technology can effectively solve the problems in the prior art.
The invention provides a switch cabinet based on an online monitoring technology, wherein a passive wireless temperature measuring sensor, a partial discharge sensor, a temperature and humidity sensor and a current collecting sensor are arranged in the switch cabinet, and the switch cabinet also comprises a communication manager, a router, a monitoring host, a background system server and a telecontrol machine; the wireless temperature measuring sensor, the partial discharge sensor, the temperature and humidity sensor and the current acquisition sensor are connected with the communication management machine, the communication management machine is connected with the router, and the router is further connected with the monitoring host, the background system server and the telecontrol machine.
As a further optimization of the invention, the passive wireless temperature measurement sensor comprises a wireless temperature sensor, a temperature measurement communication terminal and a temperature monitoring alarm system.
As further optimization of the invention, the wireless temperature sensor uses ZigBee wireless transmission protocol, and communicates with the transmitting and receiving device by adopting 433MHZ wireless transmission frequency band to transmit the temperature data of the monitoring point to the temperature measurement communication terminal.
As a further optimization of the invention, the partial discharge sensor adopts TEV, AE and UHF three-in-one partial discharge sensing technology.
As a further optimization of the invention, the partial discharge sensor comprises a monitoring front end, a monitoring host and a background server, wherein the monitoring front end is connected with the monitoring host, and the monitoring host is connected with the background server.
The invention utilizes the online monitoring technology to perform online monitoring on the contact temperature of the switch cabinet, a transient earth voltage signal (TEV) generated by partial discharge, an ultrasonic signal (AE), an ultrahigh frequency signal (UHF) and the environment temperature and humidity, thereby realizing the real-time monitoring and recording of the operation parameters of the switch cabinet. Through 24-hour uninterrupted real-time monitoring of the switch cabinet, the health condition of the switch cabinet is reflected in real time, meanwhile, comprehensive analysis is carried out on the temperature and partial discharge data monitored in real time, early warning is carried out on the insulation degradation degree of equipment, hidden equipment hazards and defects are found in advance, and faults are avoided.
Drawings
FIG. 1 is a diagram of the frame construction of the present invention;
the intelligent terminal comprises an incoming line cabinet 1, a bus coupler cabinet 2, a PT cabinet 3, an outgoing line cabinet 4, a wireless temperature measuring sensor 5, an partial discharge sensor 6, a temperature and humidity sensor 7, a current collecting sensor 8, a communication manager 9, a router 10, a monitoring host 11, a background system server 12, a telecontrol machine 13, an application layer 14, a communication layer 15, a collecting layer 16 and an equipment layer 17.
Detailed Description
As shown in fig. 1, the present embodiment is applicable to any switch cabinet, for example, an incoming line cabinet 1, a bus coupler cabinet 2, a PT cabinet 3, an outgoing line cabinet 4, and the like, in the present embodiment, a passive wireless temperature measuring sensor 5, an partial discharge sensor 6, a temperature and humidity sensor 7, and a current collecting sensor 8 are arranged in the switch cabinet, and the present embodiment further includes a communication manager 9, a router 10, a monitoring host 11, a background system server 12, and a telemechanical 13; the wireless temperature measuring sensor 5, the partial discharge sensor 6, the temperature and humidity sensor 7 and the current acquisition sensor 8 are connected with the communication manager 9, the communication manager 9 is connected with the router 10, and the router 10 is further connected with the monitoring host 11, the background system server 12 and the telecontrol machine 13.
Starting with the basic principle of wireless temperature measurement, on-line monitoring of partial discharge of the switch cabinet and abnormal heating of the switch cabinet, the embodiment establishes a functional relation among data parameters by performing data acquisition on contact temperature and partial discharge, finds the optimal operation condition of the switch cabinet by fitting a curve, and summarizes the intelligent analysis method of the state of the switch cabinet. The correlation between on-line monitoring data such as the contact temperature, the partial discharge signal, the environment temperature and the environment humidity and the abnormal heating and insulation degradation of the switch cabinet is analyzed, and the feasibility, the reliability and the accuracy of the intelligent analysis method for the state of the switch cabinet are demonstrated.
In the embodiment, the wireless temperature sensor, the partial discharge front-end sensor, the monitoring host 11, the communication manager, the background server, the intranet terminal and the like are built to form software and hardware of the intelligent analysis method for the state of the switch cabinet. And finally, applying the intelligent analysis method to the Huanggang power grid for pilot test. A wireless temperature measuring device and a partial discharge front-end sensor are installed on contacts which are easy to rise in temperature, such as an incoming and outgoing line cabinet 4, a PT cabinet 3, a station transformer cabinet and a bus sectional cabinet of a transformer substation, so that data acquisition of contact temperature and partial discharge is carried out, and verification analysis is carried out on the intelligent state monitoring method.
Aiming at the abnormal state of the switch cabinet calculated by the intelligent analysis method, comprehensive maintenance and power failure are utilized to carry out metal technology supervision on a metal conductive loop in the switch cabinet, the accuracy of the intelligent analysis method is verified, metal technology supervision failure analysis is carried out on equipment with faults, the whole process supervision on the abnormal switch cabinet is realized, the related experience of heating and insulation degradation of the switch cabinet is accumulated, the daily work of metal technology supervision is guided, and the design, factory monitoring and manufacture, field acceptance and the like of the newly-built substation switch cabinet in the future are facilitated.
The method comprises the steps of adopting a novel passive wireless temperature sensing technology, adopting a TEV, AE and UHF three-in-one partial discharge sensing technology, and analyzing the implementation principle and implementation scheme of the TEV, AE and UHF partial discharge sensing technology.
Secondly, the overall design of the intelligent analysis method. Determining functions required to be realized by the intelligent analysis method for the state of the switch cabinet, and dividing the functions of the modules according to the equipment layer 17, the acquisition layer 16, the communication layer 15 and the application layer 14. Firstly, monitoring objects such as an incoming line cabinet 1, a bus coupler cabinet 2, a PT cabinet 3 and an outgoing line cabinet 4 are determined as an equipment layer 17. The wireless temperature measuring sensor 5, the partial discharge sensor 6, the temperature and humidity sensor 7 and other devices are used as the acquisition layer 16 for data acquisition. The communication manager 9, the router 10, the communication terminal, and the like perform data transmission as the communication layer 15. The application layer 14 includes databases, intelligent analysis methods, application software, graphical interfaces, and the like.
And thirdly, designing a passive wireless temperature measurement module. The wireless temperature measurement module consists of a wireless temperature sensor, a temperature measurement communication terminal and a temperature monitoring and alarming system. The wireless temperature sensor collects the contact temperature of the switch cabinet, a ZigBee wireless transmission protocol is used, a 433MHZ wireless transmission frequency band is adopted to communicate with the transmitting and receiving device, the temperature data of the monitoring point is transmitted to the temperature measurement communication terminal, and the temperature monitoring and alarming system realizes real-time monitoring and alarming on the contact temperature of the switch cabinet through real-time collection and calculation analysis of the data. And alarming when the actually measured parameter value exceeds an alarm value, and displaying a fault when the position of the temperature point of the tested device abnormally works. The database stores the temperature values of all the measuring points at all times, and can be inquired, and the data are displayed through a historical curve. By assigning the authority, the relevant alarm setting can be performed. All the operation data setting, modification and the like need to be operated by personnel with set authority. When the temperature rises to reach the alarm value, the alarm information can be transmitted to the dispatching desk through the intranet channel.
And fourthly, designing a partial discharge online monitoring module. The partial discharge online monitoring module consists of a monitoring front end, a monitoring host 11 and a background server, and achieves the purposes of big data analysis and multi-site management through multi-point cooperation. Each monitoring front end can display the results of partial discharge monitoring such as partial discharge amplitude and other information on site, and the results are combined into a whole station monitoring network through a wireless network to form a distributed monitoring system. The partial discharge monitoring front end transmits data to the monitoring host 11, and the monitoring host 11 can display the partial discharge monitoring condition of each partial discharge front end after processing the data, including: the size, the severity and the like of the partial discharge signals are recorded, the temperature and the humidity of the transformer substation are recorded, the influence of environmental factors on the partial discharge of the switch cabinet can be observed, and a simple and understandable partial discharge activity chart can be drawn to observe the development trend of the partial discharge.
And fifthly, analyzing key technologies influencing measurement accuracy and solving methods thereof. The nondestructive transmission of temperature data is realized through the wireless signal transmission of a specific frequency band, and the high-precision temperature monitoring is ensured to be realized in the environments of strong electric fields and strong magnetic fields.
And sixthly, comprehensively analyzing and comparing the switch cabinet contact temperature and partial discharge online detection data. The wireless temperature measurement data of the switch cabinet contact and the data collected by partial discharge monitoring are comprehensively analyzed and judged, the intelligent judgment is given to the operation state of the switch cabinet, and the functional relation between the switch cabinet temperature and the partial discharge data is analyzed.
Seventhly, the metal technology supervision work flow and the technology summary of the switch cabinet. And carrying out metal technology supervision by combining power failure, verifying the accuracy of the intelligent analysis method, and accumulating the related experiences of heating and insulation degradation of the switch cabinet to guide the daily work of metal technology supervision.
And eighthly, researching the operation management specifications of software and hardware of the intelligent analysis method. The operation management specifications of related devices for wireless temperature measurement and comprehensive partial discharge online monitoring are formulated through research, and a metal technology supervision implementation scheme of the switch cabinet is formulated.
Novel passive wireless temperature sensor. The sensor obtains electric energy through electromagnetic energy, and provides energy for infrared temperature measurement and wireless transmission. The sensor is communicated with a receiving device in a 433MHZ wireless transmission mode, adopts special soft magnetic materials and a magnetic saturation technology, and has an overload protection function; meanwhile, the device has strong electric field and strong magnetic field interference resistance, high measurement precision, capability of meeting the service life of more than 20 years at the working environment temperature of 80 ℃, maintenance-free property and no influence on the normal operation of electrical equipment.
TEV, AE and UHF three-in-one intelligent sensor. TEV, AE and UHF three-in-one intelligent sensor simultaneously acquires TEV, AE and UHF partial discharge signal data in the same time period. Various partial discharge type signals can be randomly combined, and various data types such as an amplitude map and the like are supported. The monitoring host 11 can also analyze and judge the real-time data and perform intelligent early warning. The sensor has strong electromagnetic interference resistance, high resolution and long service life.
The functions of the modules are divided according to the equipment layer 17, the acquisition layer 16, the communication layer 15 and the application layer 14. Firstly, monitoring objects such as an incoming line cabinet 1, a bus coupler cabinet 2, a PT cabinet 3 and an outgoing line cabinet 4 are determined as an equipment layer 17. The wireless temperature measuring sensor 5, the partial discharge sensor 6, the temperature and humidity sensor 7 and other devices are used as the acquisition layer 16 for data acquisition. The communication manager 9, the router 10, the communication terminal, and the like perform data transmission as the communication layer 15. The application layer 14 includes databases, intelligent analysis methods, application software, graphical interfaces, and the like. The purposes of big data analysis and multi-site management are achieved through data acquisition, wireless transmission and multi-point cooperation.
The whole system is constructed as shown in the above figure. Each monitoring front end can display the results of temperature and partial discharge monitoring on site, such as the temperature of a moving contact and a static contact, the partial discharge amplitude and other information, and the whole station monitoring network is combined through a wireless network to form a distributed monitoring system. The monitoring front end transmits data to the monitoring host 11, and the monitoring host 11 can display the temperature and partial discharge monitoring condition of each front end after processing the data, including: the contact temperature and the magnitude and the severity of partial discharge signals and the like are recorded, the environmental temperature and the humidity of the transformer substation are recorded, the influence of environmental factors on the heating and partial discharge of the switch cabinet can be observed, and a simple and understandable switch cabinet contact temperature and partial discharge activity chart can be drawn to observe the operation state change trend of the switch cabinet. The monitoring host 11 performs alarm and fault display on the operating states of the switch cabinet, such as temperature, partial discharge and the like according to the set alarm judgment criterion. The data collected by each monitoring front end can also be transmitted by the remote machine 13 to the intranet, and the intranet terminal can check each monitoring data remotely in real time and receive the alarm and fault short message generated by the system.
The partial discharge detection front end supports the collection of TEV, AE and UHF three types of partial discharge signals, various partial discharge type signals can be randomly combined, and a plurality of data types such as an amplitude map and the like are supported. The environmental front end can monitor T (temperature), Rh (humidity). The host computer and the front end are based on a Modbus protocol, and the communication medium 6 can be in a wired or wireless mode. The monitoring host has the functions of data management, query, alarm and the like. The monitoring host adopts QT to develop a human-computer interaction program based on an ARMCortex-A8 framework and an embedded linux operating system, and has the functions of data management, query, alarm and the like. The software mainly comprises three parts of content, namely data acquisition control, data query analysis display and data uploading.
The temperature monitoring front end is mainly a passive wireless sensor, monitoring data is accessed to the monitoring host 11 in a wireless mode,
background monitoring system software adopts a Browser/Server structure, the system is deployed in an intranet cloud Server (Server) (Zhuhai multi-cloud Server), and a client adopts a Browser (Browser) to run the software to check and analyze data measured by the system. In the B/S system structure system, a user sends a request to a Server on a network through a browser, the Server processes the request of the browser and returns information required by the user to the browser, and other requests, such as data query, analysis, result return, dynamic webpage generation, database access, application program execution and other work are all completed by a Web Server.
The specific functions are as follows:
the alarm function is as follows: the alarm is carried out when the actually measured parameter value exceeds the alarm value, different alarm values can be set according to the working environments of different devices, and the alarm mode can be acousto-optic alarm and the like.
And (3) fault display: and when the temperature of the tested equipment and the partial discharge data reach abnormal work, displaying the fault.
Database functions: the database stores the temperature and partial discharge data values of all the measuring points at all times, and can be inquired, and the data are displayed through a historical curve.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A switch cabinet based on an online monitoring technology is characterized in that a passive wireless temperature measuring sensor, a partial discharge sensor, a temperature and humidity sensor and a current collecting sensor are arranged in the switch cabinet, and the switch cabinet further comprises a communication manager, a router, a monitoring host, a background system server and a telecontrol machine; the wireless temperature measuring sensor, the partial discharge sensor, the temperature and humidity sensor and the current acquisition sensor are connected with the communication management machine, the communication management machine is connected with the router, and the router is further connected with the monitoring host, the background system server and the telecontrol machine.
2. The switch cabinet based on the online monitoring technology as claimed in claim 1, wherein the passive wireless temperature measurement sensor comprises a wireless temperature sensor, a temperature measurement communication terminal and a temperature monitoring alarm system.
3. The switch cabinet based on the online monitoring technology as claimed in claim 2, wherein the wireless temperature sensor uses ZigBee wireless transmission protocol, and communicates with the transmitting and receiving device by adopting 433MHZ wireless transmission frequency band to transmit the temperature data of the monitoring point to the temperature measurement communication terminal.
4. The switch cabinet based on the on-line monitoring technology as claimed in claim 1, wherein the partial discharge sensor adopts TEV, AE and UHF three-in-one partial discharge sensing technology.
5. The switch cabinet based on the online monitoring technology, according to claim 1, wherein the partial discharge sensor comprises a monitoring front end, a monitoring host and a background server, the monitoring front end is connected with the monitoring host, and the monitoring host is connected with the background server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466478.5A CN112305982A (en) | 2020-12-14 | 2020-12-14 | Switch cabinet based on-line monitoring technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466478.5A CN112305982A (en) | 2020-12-14 | 2020-12-14 | Switch cabinet based on-line monitoring technology |
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| CN112305982A true CN112305982A (en) | 2021-02-02 |
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| CN202011466478.5A Pending CN112305982A (en) | 2020-12-14 | 2020-12-14 | Switch cabinet based on-line monitoring technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986767A (en) * | 2021-03-10 | 2021-06-18 | 浙江徕米物联网科技有限公司 | On-line monitoring system is put in distribution room cubical switchboard equipment office |
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2020
- 2020-12-14 CN CN202011466478.5A patent/CN112305982A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986767A (en) * | 2021-03-10 | 2021-06-18 | 浙江徕米物联网科技有限公司 | On-line monitoring system is put in distribution room cubical switchboard equipment office |
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