CN202836822U - Temperature detection system for capacitor in transformer substation - Google Patents
Temperature detection system for capacitor in transformer substation Download PDFInfo
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- CN202836822U CN202836822U CN 201220369111 CN201220369111U CN202836822U CN 202836822 U CN202836822 U CN 202836822U CN 201220369111 CN201220369111 CN 201220369111 CN 201220369111 U CN201220369111 U CN 201220369111U CN 202836822 U CN202836822 U CN 202836822U
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Abstract
Provided by the utility model is a temperature detection system for a capacitor in a transformer substation. The system comprises: a passive wireless temperature measuring device, which is used for detecting the temperature of a capacitor in a transformer substation, receiving an excitation signal and converting the excitation signal into a resonance temperature response signal correlated with the temperature changing linearity; a temperature signal collection apparatus, which is used for sending the excitation signal to the passive wireless temperature measuring device, receiving the temperature response signal outputted by the passive wireless temperature measuring device, and collecting temperature information according to the change of the frequency of the temperature response signal and outputting the information; and the temperature monitoring apparatus, which is used for receiving the temperature information outputted by the temperature signal collection apparatus and carrying out monitoring processing on the information. According to the utility model, the defect of insufficient insulation can be overcome; there is no need for extra supplying of a power supply; the interferences from the environment and the surrounding electromagnetic field can be effectively avoided; and the long-term and reliable detection on the temperature of the capacitor on the high temperature condition can be realized. Moreover, there is no need to carry out maintenance; the maintenance cost can be reduced; and the work efficiency can be improved.
Description
Technical field
The utility model relates to a kind of temp measuring system, relates in particular to a kind of substation capacitors system for detecting temperature.
Background technology
Capacitor in the transformer station is to guarantee that electrical network normally moves, improves the important composition equipment of quality of voltage, but owing to be subject to working environment (such as temperature, dust etc.), current overload loss, exceed the quata to decide the factor affecting such as voltage power supply, the long-term capacitor group of using, the problems such as meeting be leaked, abnormal sound, cause the capacitor group to break down, directly have influence on the security of production.When peak of power consumption arrives, under the extreme weather conditions such as summer, the capacitor reactive compensation effect is more obvious, if do not have effective capacitor status monitoring means this moment, capacitor faults occurs easily, even over temperature and heat occurs easily, cause fault, cause blast, therefore, capacitor group on-line temperature monitoring is necessary.
In the prior art, the method that the capacitor group is detected has conventional thermometric mode, optical fiber temperature-measurement mode and infrared thermometry mode, conventional thermometric mode adopts the thermometrics such as conventional thermopair, thermal resistance, semiconductor temperature sensor, need the plain conductor signal transmission and power supply is provided, insulating property can not guarantee; The optical fiber temperature-measurement mode adopts fibre optic temperature sensor, fibre optic temperature sensor adopts the fiber optic transmission temperature signal, optical fiber has easy to break, the characteristics such as easily broken, non-refractory, and, thereby easily cause the optical fiber creeping discharge that insulativity is reduced behind the accumulation dust, in addition, the cost of optical fiber temperature-measurement is also relatively high; Infrared measurement of temperature is contactless temperature-measuring, requires measured point can there is no coverage in the visual field, and surface clean to be to guarantee accuracy, simultaneously, infrared measurement of temperature be subject to environment and around the interference of electromagnetic field.
Therefore, need a kind of new substation capacitors system for detecting temperature of design, can overcome the shortcoming of insulativity deficiency, need not additionally to provide power supply, effectively avoid being subjected to environment and peripheral electromagnetic field to disturb, can realize detection long-term, reliable and that under hot conditions, carry out the capacitor temperature, and need not to safeguard, reduce maintenance cost, increase work efficiency.
The utility model content
In view of this, a kind of substation capacitors system for detecting temperature that the utility model provides, can overcome the shortcoming of insulativity deficiency, need not additionally to provide power supply, effectively avoid being subjected to environment and peripheral electromagnetic field to disturb, can realize detection long-term, reliable and that under hot conditions, carry out the capacitor temperature, and need not to safeguard, reduce maintenance cost, increase work efficiency.
A kind of substation capacitors system for detecting temperature that the utility model provides comprises:
Passive wireless temperature measuring device is for detection of the temperature of substation capacitors, by receiving pumping signal and converting pumping signal to the resonance of temperature variation linear dependence temperature answer signal;
The temperature signal collection device is used for sending pumping signal to passive wireless temperature measuring device, and receives the temperature answer signal of passive wireless temperature measuring device output, according to variation collecting temperature information and the output of the frequency of temperature answer signal;
Device for monitoring temperature is used for receiving temperature signal collection device output temperature information and monitoring processing;
Further, described passive wireless temperature measuring device is the passive wireless temperature sensor based on surface acoustic wave;
Further, described passive wireless temperature sensor based on surface acoustic wave is mode of resonance passive wireless acoustic surface wave temperature sensor, described mode of resonance passive wireless acoustic surface wave temperature sensor export resonance temperature answer signal;
Further, described temperature signal collection device comprises:
The zigbee temperature collecting device is used for sending pumping signal to passive wireless temperature measuring device, and receives the temperature answer signal of passive wireless temperature measuring device output, according to variation collecting temperature information and the output of the frequency of temperature answer signal;
Zigbee temperature information receiving trap is for transmitting behind the temperature information that receives the output of zigbee temperature collecting device and to device for monitoring temperature;
Described zigbee temperature collecting device and zigbee temperature information receiving trap consist of the star wireless network architecture, node centered by the described zigbee temperature information receiving trap, and described zigbee temperature collecting device is the terminal device node;
Further, described device for monitoring temperature is microprocessor and counterpart external device, be used for the temperature information of zigbee temperature information receiving trap output is processed and exported, supervising device adopts WindowsCE6.0 operating system and SQLite3 database, and described device for monitoring temperature carries out data interaction by serial ports and zigbee temperature information receiving trap.
Further, the substation capacitors system for detecting temperature also comprises display device, is used for receiving the treated temperature data of device for monitoring temperature output and showing.
The beneficial effects of the utility model: the utility model mode of resonance passive wireless acoustic surface wave temperature sensor only needs to adopt narrow radio frequency pulse request signal in measurement, need not power supply, have Q value height, little, the long transmission distance of power consumption, realization can be carried out temperature detection to long-term, reliable, the non-maintaining monitoring of capacitor temperature under hot conditions; Adopt the zigbee device to consist of wireless-transmission network, can short distance, the reliable and stable transmission of low-power consumption, low data rate, low cost and low complex degree ground realization data, has very strong interference free performance, can satisfy the temperature survey of in substation, carrying out capacitor, and reduced the maintenance cost of electric power enterprise, improved work efficiency, and, the utility model adopts wireless network to carry out data transmission, overcome the shortcoming of wired load mode insulativity deficiency, simple in structure, it is convenient, with low cost to implement.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is principle schematic of the present utility model.
Embodiment
Fig. 1 is principle schematic of the present utility model, as shown in the figure, a kind of substation capacitors system for detecting temperature that the utility model provides, comprise: passive wireless temperature measuring device, for detection of the temperature of substation capacitors, by receiving pumping signal and converting pumping signal to the resonance of temperature variation linear dependence temperature answer signal; The temperature signal collection device is used for sending pumping signal to passive wireless temperature measuring device, and receives the temperature answer signal of passive wireless temperature measuring device output, according to variation collecting temperature information and the output of the frequency of temperature answer signal; Device for monitoring temperature is used for receiving temperature signal collection device output temperature information and monitoring processing; The utility model can overcome the shortcoming of insulativity deficiency, need not additionally to provide power supply, effectively avoid being subjected to environment and peripheral electromagnetic field to disturb, can realize detection long-term, reliable and that under hot conditions, carry out the capacitor temperature, and need not to safeguard, reduce maintenance cost, increase work efficiency.
In the present embodiment, described passive wireless temperature measuring device is the passive wireless temperature sensor based on surface acoustic wave so that install, maintenance cost reduces greatly, need not powered battery, reduced the maintenance cost that battery altering brings, can not impact ecologic environment simultaneously; Need not line on measured point or related support structure, between sensor and the receiving equipment without electrical link, thereby realized the high pressure isolation, the support equipment safe operation; The passive wireless temperature sensor volume is little, and is easy for installation flexible, is not subjected to on-the-spot structure and spacial influence; Sensor can the temperature in any operating temperature range be debugged, and not affected by seasonal factor; The environmental factors such as dust accretions can not exert an influence to the sensor thermometric.
In the present embodiment, described passive wireless temperature sensor based on surface acoustic wave is mode of resonance passive wireless acoustic surface wave temperature sensor, described mode of resonance passive wireless acoustic surface wave temperature sensor export resonance temperature answer signal; Mode of resonance passive wireless acoustic surface wave temperature sensor only needs to adopt narrow radio frequency pulse request signal in measurement, has Q value height, power consumption is little and the advantage of long transmission distance.
In the present embodiment, described temperature signal collection device comprises:
The zigbee temperature collecting device is used for sending pumping signal to passive wireless temperature measuring device, and receives the temperature answer signal of passive wireless temperature measuring device output, according to variation collecting temperature information and the output of the frequency of temperature answer signal;
Zigbee temperature information receiving trap is for transmitting behind the temperature information that receives the output of zigbee temperature collecting device and to device for monitoring temperature;
Described zigbee temperature collecting device and zigbee temperature information receiving trap consist of the star wireless network architecture, node centered by the described zigbee temperature information receiving trap, described zigbee temperature collecting device is the terminal device node, can short distance, low-power consumption, low data rate, the reliable and stable transmission of data is realized on low cost and low complex degree ground, has very strong interference free performance, can satisfy the temperature survey of in substation, carrying out capacitor, and reduced the maintenance cost of electric power enterprise, improved work efficiency, nothing electrical connection in data transfer procedure, had good buffer action, in the present embodiment, zigbee temperature collecting device and zigbee temperature information receiving trap buyable do not repeat them here.
In the present embodiment, described device for monitoring temperature is microprocessor and counterpart external device, be used for the temperature information of zigbee temperature information receiving trap output is processed and shown by display device the temperature parameter of capacitor, supervising device adopts WindowsCE6.0 operating system and SQLite3 database, described device for monitoring temperature carries out data interaction by serial ports and zigbee temperature information receiving trap, in the present embodiment, adopt S3C2440A microprocessor and its corresponding external unit, these external units comprise 64MNANDFLASH, 64MSDRAM, the 10M network interface, 2 asynchronous serial ports and user's expansion interface, these external units are prior art, do not repeat them here, the user expands the usable range that mouth can increase the user, user-friendly data line, chip select line, address wire and interrupt line transmit data, have good user and experience.
In the present embodiment, the substation capacitors system for detecting temperature also comprises display device, be used for to receive the treated temperature data of device for monitoring temperature output and show, be convenient to the staff and carry out that parameter reads and data analysis, described display device can be liquid crystal display or LED display.
The principle that the utility model is realized: send pumping signal to the resonator type surface acoustic wave temperature sensor by the zigbee temperature collecting device, the resonator type surface acoustic wave temperature sensor receives the acoustic signals that according to the temperature variation of capacitor pumping signal is converted to resonance after the pumping signal, the resonance frequency of this acoustic signals becomes very good linear relation with the change of temperature in certain temperature range, then the resonator type surface acoustic wave temperature sensor converts the acoustic signals of sound wave resonance to the temperature answer signal by inverse conversion, described zigbee temperature collecting device detected temperatures answer signal signal and according to the variation collecting temperature information of the resonance frequency of temperature answer signal, and to zigbee temperature information receiving trap transmission Current Temperatures information, then zigbee temperature information receiving trap transmits temperature information to device for monitoring temperature, Current Temperatures is carried out computing and show by display device by device for monitoring temperature, be convenient to the staff and carry out that parameter reads and data analysis, in the present embodiment, the internal procedure that is produced as the resonator type surface acoustic wave temperature sensor of temperature answer signal, belong to prior art, done simple elaboration at this.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (6)
1. substation capacitors system for detecting temperature is characterized in that: comprising:
Passive wireless temperature measuring device is for detection of the temperature of substation capacitors, by receiving pumping signal and converting pumping signal to the resonance of temperature variation linear dependence temperature answer signal;
The temperature signal collection device is used for sending pumping signal to passive wireless temperature measuring device, and receives the temperature answer signal of passive wireless temperature measuring device output, according to variation collecting temperature information and the output of the frequency of temperature answer signal;
Device for monitoring temperature is used for receiving temperature signal collection device output temperature information and monitoring processing.
2. described substation capacitors system for detecting temperature according to claim 1, it is characterized in that: described passive wireless temperature measuring device is the passive wireless temperature sensor based on surface acoustic wave.
3. described substation capacitors system for detecting temperature according to claim 2, it is characterized in that: described passive wireless temperature sensor based on surface acoustic wave is mode of resonance passive wireless acoustic surface wave temperature sensor, the temperature answer signal of described mode of resonance passive wireless acoustic surface wave temperature sensor export resonance.
4. described substation capacitors system for detecting temperature according to claim 3, it is characterized in that: described temperature signal collection device comprises:
The zigbee temperature collecting device is used for sending pumping signal to passive wireless temperature measuring device, and receives the temperature answer signal of passive wireless temperature measuring device output, according to variation collecting temperature information and the output of the frequency of temperature answer signal;
Zigbee temperature information receiving trap is for transmitting behind the temperature information that receives the output of zigbee temperature collecting device and to device for monitoring temperature;
Described zigbee temperature collecting device and zigbee temperature information receiving trap consist of the star wireless network architecture, node centered by the described zigbee temperature information receiving trap, and described zigbee temperature collecting device is the terminal device node.
5. described substation capacitors system for detecting temperature according to claim 4, it is characterized in that: described device for monitoring temperature is microprocessor and counterpart external device, be used for the temperature information of zigbee temperature information receiving trap output is processed and exported, described device for monitoring temperature carries out data interaction by serial ports and zigbee temperature information receiving trap.
6. described substation capacitors system for detecting temperature according to claim 5 is characterized in that: also comprise display device, be used for receiving the treated temperature data of device for monitoring temperature output and showing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369111 CN202836822U (en) | 2012-07-27 | 2012-07-27 | Temperature detection system for capacitor in transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220369111 CN202836822U (en) | 2012-07-27 | 2012-07-27 | Temperature detection system for capacitor in transformer substation |
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| Publication Number | Publication Date |
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| CN202836822U true CN202836822U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220369111 Expired - Fee Related CN202836822U (en) | 2012-07-27 | 2012-07-27 | Temperature detection system for capacitor in transformer substation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768081A (en) * | 2012-07-27 | 2012-11-07 | 重庆市电力公司永川供电局 | Passive wireless temperature measuring system for capacitors of transformer substation |
| CN104142191B (en) * | 2014-08-22 | 2016-08-17 | 广东电网有限责任公司电力科学研究院 | Vacuum isolation circuit breakers In-Line Temperature Measure System |
| CN107167254A (en) * | 2017-06-08 | 2017-09-15 | 安徽富吉电容有限责任公司 | A kind of capacitor temperature detection means based on Internet of Things |
-
2012
- 2012-07-27 CN CN 201220369111 patent/CN202836822U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768081A (en) * | 2012-07-27 | 2012-11-07 | 重庆市电力公司永川供电局 | Passive wireless temperature measuring system for capacitors of transformer substation |
| CN104142191B (en) * | 2014-08-22 | 2016-08-17 | 广东电网有限责任公司电力科学研究院 | Vacuum isolation circuit breakers In-Line Temperature Measure System |
| CN107167254A (en) * | 2017-06-08 | 2017-09-15 | 安徽富吉电容有限责任公司 | A kind of capacitor temperature detection means based on Internet of Things |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20180727 |