CN210183092U - Power supply system with fluorescence formula optic fibre temperature measuring device - Google Patents
Power supply system with fluorescence formula optic fibre temperature measuring device Download PDFInfo
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- CN210183092U CN210183092U CN201920983545.7U CN201920983545U CN210183092U CN 210183092 U CN210183092 U CN 210183092U CN 201920983545 U CN201920983545 U CN 201920983545U CN 210183092 U CN210183092 U CN 210183092U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a power supply system with a fluorescent optical fiber temperature measuring device, which comprises a cable, a copper bar, a transformer, a switch cabinet, a rectifier and a monitoring room, wherein the cable is provided with a cable connecting point, the copper bar is also provided with a connecting point, a circuit breaker is arranged in the switch cabinet and is provided with a contact, and a plurality of groups of iron cores and diodes are arranged in the rectifier; the method is characterized in that: the fluorescent fiber probes are respectively preset or pre-installed on the cable, the cable connection point, the copper bar connection point, the circuit breaker contact, the iron core and the diode, all the fluorescent fiber probes are divided into a plurality of groups and then are respectively collected to a plurality of fiber combination units through loop fibers, the fiber combination units are further collected into a single multi-core optical cable and finally connected to a fluorescent fiber temperature measurement host computer arranged in a monitoring room, and the fiber temperature measurement host computer is connected to the switch SC1 through the Ethernet and then connected to the upper computer PC 1. The utility model discloses can diagnose the aassessment to power supply system's operation conditions.
Description
Technical Field
The utility model relates to a power supply system especially relates to a power supply system with fluorescence formula optic fibre temperature measuring device.
Background
The power supply system carries the transmission and energy conversion of electric energy, heating is everywhere in the whole system, the whole process and each link, and in a stable power supply system, much heating is not caused by violent short-circuit current but is caused by equipment and line aging, overlarge resistance of a loop connection point or long-time operation in an environment with poor heat dissipation. The hidden dangers are difficult to find by means of manual inspection, and then a temperature measuring means is needed to be applied to monitor key parts in the power supply system. The key parts comprise: the circuit breaker contact, copper bar and copper bar tie point, primary cable and cable connection head, transformer core, rectifier diode etc. and traditional thermal resistance and thermocouple's temperature measurement mode can cause very big insulating hidden danger to power supply system because it is conductor material. The infrared temperature measurement mode has higher cost and is easily influenced by dust falling. And the wireless transmitting temperature measuring sensor is powered by a packaged battery, and the service life of the wireless transmitting temperature measuring sensor is only several years. Therefore, the existing various temperature measuring modes have great limitations.
At present, optic fibre and photoelectron technical development are rapid, and fiber sensor temperature measurement technique is fit for power supply system's temperature measurement occasion very much and uses, has advantages such as high temperature resistant, interference killing feature are strong, the measurement is accurate, provides direct dynamic measurement for the user, has advantages such as direct, real-time, accuracy, is suitable for very much and carries out the direct measurement of temperature under high voltage, strong magnetic field environment, can guarantee the insulating properties of high voltage equipment again simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem, just provide a power supply system with fluorescence formula optic fibre temperature measuring device, arrange installation multichannel fluorescence formula fiber probe temperature measurement point through key position in power supply system, rethread conduction optical fiber transmission light signal, then get into optic fibre temperature measurement host computer and analyze out the temperature value that corresponds, backstage control host computer reads temperature data through special optic fibre temperature measurement analysis software, show and the real-time temperature value at each key position of analysis power supply system, and form historical temperature curve through the database, historical temperature data through power supply system carries out big data analysis to equipment and circuit, thereby the operation to power supply system diagnoses the aassessment.
Solve above-mentioned technical problem, the utility model discloses a technical scheme as follows:
a power supply system provided with a fluorescence type optical fiber temperature measuring device comprises a cable, a copper bar, a transformer, a switch cabinet, a rectifier and a monitoring room, wherein the cable is provided with a cable connecting point, the copper bar is also provided with a connecting point, a circuit breaker is arranged in the switch cabinet and provided with a contact, and a plurality of groups of iron cores and diodes are arranged in the rectifier; the method is characterized in that: the fluorescent fiber probes are respectively preset or pre-installed on the cable, the cable connection point, the copper bar connection point, the circuit breaker contact, the iron core and the diode, all the fluorescent fiber probes are divided into a plurality of groups and then are respectively collected to a plurality of fiber combination units through loop fibers, the fiber combination units are further collected into a single multi-core optical cable and finally connected to a fluorescent fiber temperature measurement host computer arranged in a monitoring room, and the fiber temperature measurement host computer is connected to the switch SC1 through the Ethernet and then connected to the upper computer PC 1.
The optical fiber temperature measurement host comprises: the photoelectric converter, the signal amplification circuit, the filter circuit, the embedded single chip microcomputer, the driving circuit, the excitation light source and the optical coupler are sequentially connected according to a signal transmission sequence, the embedded single chip microcomputer is further externally connected with a power circuit, a watchdog circuit, an Ethernet module, a storage and a key indicator lamp, the photoelectric converter receives fluorescence transmitted by the fluorescence type optical fiber probe through an optical fiber, the optical coupler sends excitation light to the fluorescence type optical fiber probe through the optical fiber, and the Ethernet module is connected to the switch SC 1.
Has the advantages that:
the utility model discloses can carry out the on-line monitoring analysis of temperature to power supply unit's key parts, to power supply unit's special high fever solid type part, adopt pre-buried mounting means to realize accurate temperature measurement, and temperature sensor has fine anti-interference effect through the transmission mode of light signal, and simultaneously, temperature sensor has higher precision, temperature measurement scope and higher reliability and stability. The fluorescence optical fiber temperature measurement mode has a good signal transmission topological structure, temperature data are transmitted to a fluorescence optical fiber temperature measurement host through a multi-core optical cable after all optical fiber temperature measurement loops are collected through an optical fiber merging unit, the temperature data are processed by the temperature measurement host and then uploaded to a background upper computer through a TCP Modbus protocol, temperature data are displayed and analyzed through optical fiber temperature measurement analysis software, a real-time alarm function is achieved, meanwhile, historical data are subjected to statistical analysis to form a historical curve, and whether the load running state of the power supply equipment is normal or not is evaluated through a large amount of historical data.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic diagram of the fluorescent optical fiber temperature measurement host according to the present invention.
Please note that the following reference numerals are attached to the drawings
Reference numerals in the figures refer to:
1-a direct current switch cabinet chamber, 101-1500V high-voltage cables, 102-a contact of a direct current breaker, 103-a connector of a high-voltage copper bar and a cable, and 104-a first optical fiber merging unit;
2-rectifying voltage chamber, 201-33V low-voltage cable, 202-iron core, 203-diode, 204-second optical fiber merging unit;
3-low voltage chamber, 301-400V medium voltage cable, 302-alternating current breaker contact, 303-connector of medium voltage cable and copper bar, 304-third optical fiber merging unit;
4-a monitoring room;
5-optical fiber temperature measurement host;
6-a switch;
7-an upper computer.
Detailed Description
Referring to fig. 1 and fig. 2, an embodiment of the power supply system with a fluorescence optical fiber temperature measuring device according to the present invention is shown.
The power supply system comprises a cable, a copper bar, a transformer, a switch cabinet, a rectifier and a monitoring room, wherein the cable is provided with a cable connecting point, the copper bar is also provided with a connecting point, a circuit breaker is arranged in the switch cabinet and provided with a contact, and a plurality of groups of iron cores and diodes are arranged in the rectifier; the method is characterized in that: the fluorescent fiber probes are respectively preset or pre-installed on the cable, the cable connection point, the copper bar connection point, the circuit breaker contact, the iron core and the diode, all the fluorescent fiber probes are divided into a plurality of groups and then are respectively collected to a plurality of fiber combination units through loop fibers, the fiber combination units are further collected into a single multi-core optical cable and finally connected to a fluorescent fiber temperature measurement host computer arranged in a monitoring room, and the fiber temperature measurement host computer is connected to the switch SC1 through the Ethernet and then connected to the upper computer PC 1.
More specifically described: the power supply system comprises a direct current switch cabinet chamber 1, a rectification transformation chamber 2, a low-voltage chamber 3 and a monitoring chamber 4, wherein a 1500V high-voltage cable 101, a copper bar and a direct current breaker are arranged in the direct current switch cabinet chamber 1, a 33V low-voltage cable 201 and a plurality of groups of iron cores and diodes are arranged in the rectification transformation chamber 2, and an alternating current breaker, a 400V medium-voltage cable 301 and a copper bar are arranged in the low-voltage chamber 3.
The 1500V high-voltage cable 101, the high-voltage copper bar and cable connector 103 and the direct current breaker contact 102 in the direct current switch cabinet chamber 1 are respectively pre-provided or pre-provided with a fluorescent optical fiber probe and finally collected to the first optical fiber merging unit 104 through a loop optical fiber.
The 33V low-voltage cable 201, each set of iron cores 202 and the diode 203 in the rectifying voltage chamber 2 are respectively pre-provided or pre-equipped with a fluorescent fiber probe, and finally collected to the second fiber merging unit 204 through a loop fiber.
The medium-voltage alternating-current circuit breaker contacts 302 and 400V medium-voltage cables 301 in the low-voltage chamber 3, and the medium-voltage cables and the connecting heads 303 of the copper bars are respectively preset or pre-equipped with fluorescent fiber probes, and finally collected to the third fiber merging unit 304 through loop fibers.
The optical fiber merging units are further converged into a single multi-core optical cable, each optical cable is connected to a fluorescence optical fiber temperature measurement host 5 arranged in the monitoring room 4, and the optical fiber temperature measurement host is connected to a switch 6 through the Ethernet and then connected to an upper computer 7.
The optical fiber temperature measurement host 5 includes: the photoelectric converter, the signal amplification circuit, the filter circuit, the embedded single chip microcomputer, the driving circuit, the excitation light source and the optical coupler are sequentially connected according to a signal transmission sequence, the embedded single chip microcomputer is further externally connected with a power circuit, a watchdog circuit, an Ethernet module, a storage and a key indicator lamp, the photoelectric converter receives fluorescence transmitted by the fluorescence type optical fiber probe through an optical fiber, the optical coupler sends excitation light to the fluorescence type optical fiber probe through the optical fiber, and the Ethernet module is connected to the switch SC 1.
According to the relation between the fluorescence attenuation life and the temperature, in order to realize temperature measurement, a set of fluorescence life type optical fiber temperature measurement host is designed. The optical fiber fluorescence temperature host machine is integrally designed to be composed of 5 parts, namely excitation, light transmission, a sensing head, an arithmetic circuit and signal analysis, the basic structure of the optical fiber fluorescence temperature host machine is shown in figure 2, a driving circuit drives an excitation light source to emit periodic pulse excitation light, and the periodic pulse excitation light is coupled into an optical fiber and then transmitted to the sensing head to excite a fluorescent material; the fluorescence emitted by the excited fluorescent material is transmitted back by the optical fiber, and is filtered by the optical filter, and the fluorescence signal with the required wavelength is taken out and enters the photoelectric detector for photoelectric conversion to become a current signal. After signal processing, the temperature is obtained according to the relation between the temperature and the fluorescence lifetime, and finally, the temperature is displayed and output. The whole system is excited, sampled, calculated and controlled by an embedded single chip microcomputer.
The fluorescence optical fiber temperature measurement host realizes the real-time monitoring function of the temperature of the key part of the power supply system, and the sampling period of the temperature is 100 ms. The core control component of the optical fiber temperature measurement host is an embedded single chip microcomputer which adopts an STM32F4 chip, and the clock period is 15 nS. The embedded single chip microcomputer STM32F4 chip realizes excitation control of a light source, receiving and conversion of a fluorescence signal, data processing and communication uploading. And the fluorescence temperature measurement data is uploaded to a background upper computer through an Ethernet port of the optical fiber temperature measurement host computer by a TCP Modbus protocol. The fluorescent optical fiber temperature measurement host is provided with an Ethernet communication port, and is connected to the background upper computer PC1 after being transmitted to the switch SC1 through a network cable line.
Fluorescence temperature measurement acquisition and analysis software is operated in the background upper computer PC1 to display and analyze fluorescence temperature measurement data, so that a real-time alarm function is realized, historical data can be subjected to statistical analysis, and a report and a historical curve are formed to judge whether a temperature measurement point and power supply equipment operate abnormally.
The working principle is as follows:
the fluorescence optical fiber temperature measurement technology is based on the principle of fluorescence afterglow, a temperature sensing probe is made of a rare earth material, the rare earth material generates fluorescence after being excited by light with specific wavelength, the fluorescence is an excited light phenomenon, the excited light is a phenomenon that electrons in a luminescent material are excited by external energy, then, the electrons are transited from a ground state to an excited state, then, the electrons are transited from the excited state back to the ground state, and redundant energy is radiated in the form of light. The fluorescent optical fiber temperature sensor based on the fluorescent afterglow principle has the advantages of large temperature measuring range, stable performance, simple topological structure and long service life. The fluorescent optical fiber temperature sensor probe is embedded in a key part of power supply equipment, and the optical fiber is used as a temperature sensing signal transmission medium, so that the problems of insulation and anti-electromagnetic interference are solved, and the online real-time accurate measurement of the temperature is realized in a high-voltage and high-magnetic-field environment.
A multichannel fluorescence type optical fiber probe temperature measuring point is arranged on a key component of a power supply system, and the key component is as follows: the cable head of the cable, the iron core of the transformer, the tie point of the copper bar, the tie point and contact of the breaker of the switch cabinet, diode of the rectifier, etc., adopt the installation method of pre-burying or pre-installing, the key position of the above-mentioned apparatus of the power supply system has multi-channel fluorescence type optical fiber probes, transmit the optical signal through conducting the optical fiber loop, reentrant the temperature measurement host computer of the optic fibre analyzes out the corresponding temperature value, the backstage monitors the host computer and reads the temperature data through the temperature measurement analysis software of the specialized optic fibre, reveal and analyze the real-time temperature value of each key position of the power supply system, and form the historical temperature curve through the database software, carry on the big data analysis to apparatus and power supply load through the historical temperature data of the power supply system.
Claims (2)
1. A power supply system provided with a fluorescence type optical fiber temperature measuring device comprises a cable, a copper bar, a transformer, a switch cabinet, a rectifier and a monitoring room, wherein the cable is provided with a cable connecting point, the copper bar is also provided with a connecting point, a circuit breaker is arranged in the switch cabinet and provided with a contact, and a plurality of groups of iron cores and diodes are arranged in the rectifier; the method is characterized in that: the fluorescent fiber probes are respectively preset or pre-installed on the cable, the cable connection point, the copper bar connection point, the circuit breaker contact, the iron core and the diode, all the fluorescent fiber probes are divided into a plurality of groups and then are respectively collected to a plurality of fiber combination units through loop fibers, the fiber combination units are further collected into a single multi-core optical cable and finally connected to a fluorescent fiber temperature measurement host computer arranged in a monitoring room, and the fiber temperature measurement host computer is connected to the switch SC1 through the Ethernet and then connected to the upper computer PC 1.
2. The power supply system with the fluorescence type optical fiber temperature measuring device according to claim 1, wherein: the fluorescence optical fiber temperature measurement host comprises: the photoelectric converter, the signal amplification circuit, the filter circuit, the embedded single chip microcomputer, the driving circuit, the excitation light source and the optical coupler are sequentially connected according to a signal transmission sequence, the embedded single chip microcomputer is further externally connected with a power circuit, a watchdog circuit, an Ethernet module, a storage and a key indicator lamp, the photoelectric converter receives fluorescence transmitted by the fluorescence type optical fiber probe through an optical fiber, the optical coupler sends excitation light to the fluorescence type optical fiber probe through the optical fiber, and the Ethernet module is connected to the switch SC 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983545.7U CN210183092U (en) | 2019-06-27 | 2019-06-27 | Power supply system with fluorescence formula optic fibre temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983545.7U CN210183092U (en) | 2019-06-27 | 2019-06-27 | Power supply system with fluorescence formula optic fibre temperature measuring device |
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| Publication Number | Publication Date |
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| CN210183092U true CN210183092U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920983545.7U Active CN210183092U (en) | 2019-06-27 | 2019-06-27 | Power supply system with fluorescence formula optic fibre temperature measuring device |
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| CN (1) | CN210183092U (en) |
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- 2019-06-27 CN CN201920983545.7U patent/CN210183092U/en active Active
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