CN201666819U - High-voltage switch temperature monitoring and early-warning system - Google Patents
High-voltage switch temperature monitoring and early-warning system Download PDFInfo
- Publication number
- CN201666819U CN201666819U CN2009202797272U CN200920279727U CN201666819U CN 201666819 U CN201666819 U CN 201666819U CN 2009202797272 U CN2009202797272 U CN 2009202797272U CN 200920279727 U CN200920279727 U CN 200920279727U CN 201666819 U CN201666819 U CN 201666819U
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- power supply
- cabinet
- temperature
- voltage switch
- iron core
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Abstract
The utility model relates to a high-voltage switch temperature monitoring and early-warning system. The power supply voltage in temperature monitoring equipment of the existing high-voltage switch cabinet is unstable and the power supply time is short. Therefore, the high-voltage switch temperature monitoring and early-warning system comprises in-cabinet equipment and out-cabinet equipment, wherein the in-cabinet equipment comprises a plurality of wireless temperature sensors and an in-cabinet power supply; the in-cabinet power supply provides the power for the wireless temperature sensors; the out-cabinet equipment comprises a wireless transceiver, a temperature monitoring device and an out-cabinet power supply; the in-cabinet power supply is an induction power supply that comprises an iron core; the iron core surrounds the conductive part of a high-voltage switch and is wound by a coil; the coil and a voltage-stabilizing circuit are connected in series in a power supply circuit of the wireless temperature sensors; furthermore, under the magnetic saturation state of the iron core, the output voltage of the coil does not exceed 10% of the normal working voltage. The high-voltage switch temperature monitoring and early-warning system has the advantages of working stably and reliably, and can be widely applicable to monitoring various high-voltage switch cabinets.
Description
Technical field
The utility model relates to a kind of high-voltage switch gear temperature monitoring early warning system, belongs to high-tension electricity and uses the temperature measuring equipment field.
Background technology
Along with the development of electrical network and improving constantly of equipment level, high-tension switch cabinet uses in electrical network in a large number, and the inner heat phenomenon of switch cubicle also becomes the FAQs in the switch cubicle use.Because the leakproofness of switch cubicle, in the heavier position of some loads, there is the switch cubicle temperature rise problem that exceeds standard, directly have influence on the normal operation of equipment.And heating problem is a constantly process of development, if do not controlled, degree of superheat is aggravation constantly, and the performance and life-span of equipment exerted an influence.Because the environment of electric field is abominable, and electromagnetic interference (EMI) is very strong, and the voltage of power high voltage switch contact is very high, can not monitor the temperature of contact by conventional circuit connection simultaneously, this brings certain degree of difficulty also for the switch cubicle temperature detection.
September 27 2006 day for announcing, notification number is the Chinese patent " the online temperature-detecting device of handcart-type primary cut-out contact " of CN2821724Y, comprise power circuit, radio temperature sensor, signaling conversion circuit, wireless encoding transmitter, wireless decoding receiver, warning circuit, power circuit is made of the current transformer and the power-switching circuit that are installed on each phase contact arm.
October 17 2007 day for announcing, notification number is the utility model patent " switch cabinet contact temperature detection alarm system " of CN101055209A, is made up of a switch cubicle temperature sensing circuit, a plurality of switch cabinet contact temperature testing circuit, corresponding host computer and distant place control center.
The problem that above-mentioned prior art exists is:
1. power supply mode: the rechargeable battery or the disposable high-energy battery that adopt self-power supply device and paired running.Battery is at high temperature easily blasted, and has potential safety hazard.
2. voltage regulation way: adopt the voltage stabilizing chip that the wide region voltage stabilizing can not be provided, under switch cubicle is loaded uncertain situation, make relatively difficulty of corresponding iron core; Voltage instability under high-temperature condition very easily burns sensing and radio-circuit.
3. the single chip temperature of sampling is subjected to the highest 125 degrees centigrade influence of chip temperature range, can not be fit to the on-the-spot more multiple requirement of large-temperature range.
The utility model content
The technical problems to be solved in the utility model is the above-mentioned defective that how to overcome prior art, and a kind of high-voltage switch gear temperature monitoring early warning system is provided.
For solving the problems of the technologies described above, this high-voltage switch gear temperature monitoring early warning system, comprise equipment and cabinet external equipment in the cabinet, wherein equipment comprises power supply in a plurality of radio temperature sensors and the cabinet in the cabinet, power supply is the radio temperature sensor power supply in the cabinet, the cabinet external equipment comprises wireless transceiver, device for detecting temperature and cabinet external power, the cabinet external power is wireless transceiver and device for detecting temperature power supply, the temperature information that wireless transceiver sends radio temperature sensor is sent to temperature and surveys device, it is characterized in that: power supply is an induction power supply in the cabinet, this induction power supply comprises iron core, and this iron core is centered around on the electric parts of mistake of high-voltage switch gear, winding around on the iron core, a coil and a mu balanced circuit together seal in the feed circuit of radio temperature sensor, and under iron core magnetic saturation state, coil output voltage is no more than 10% of its normal working voltage.
So design, the utility model uses the self-powered mode of induction power supply, remedied the short deficiency of battery-powered time, improved the reliability of system's power supply, prolonged the time between overhauls(TBO) of system maintenance, reduced maintenance cost, simultaneously after the iron core magnetic saturation, the output voltage of induction power supply has reached the limit in theory, has played the effect of one-level pressure limiting, voltage stabilizing; And the mu balanced circuit of connecting has with it played the effect of secondary voltage stabilizing, makes that the interior device power supply (DPS) supply of whole cabinet is stable more, reliable.
As optimization, described radio temperature sensor comprises temperature sense parts and wireless transmitter module, and wherein the temperature sense parts are temperature acquisition chip 18B20 or RTC thermistor or thermopair radio temperature sensor.So design is convenient to the interior cabinet of cabinet outward by wireless signal, transmission information.
As optimization, described device for detecting temperature comprises the Centralized Monitoring screen, and all radio temperature sensors monitor temperature information and all deliver to Centralized Monitoring screen centralized displaying via wireless transceiver.So Centralized Monitoring is convenient in design.
As optimization, also be provided with wireless repeater between described Centralized Monitoring screen and the radio temperature sensor.So design, wireless transmission distance is far away.
As optimization, described device for detecting temperature also comprises the remote monitoring computing machine, this remote monitoring computing machine is incorporated LAN (Local Area Network) into the Centralized Monitoring screen, all radio temperature sensors monitor temperature information except that Centralized Monitoring screen centralized displaying, also be sent to the remote monitoring computing machine, realize the long-range control of facing by LAN (Local Area Network).So remote monitoring is convenient in design.
As optimization, described mu balanced circuit comprises current rectifying and wave filtering circuit, pulse transformer T1, pulse control circuit and feedback circuit, current rectifying and wave filtering circuit comprises wave filter L1, L2 and rectifier bridge, induction power supply coil two ends are respectively through wave filter L1, L2 connects the input end of rectifier bridge, cross-over connection filter capacitor C1 between the rectifier bridge both positive and negative polarity, after voltage stabilizing diode D1 and the diode D2 series connection, be connected across between the pulse transformer T1 primary coil two ends, rectifier bridge, primary coil and pulse control circuit that positive pole meets pulse transformer T1 are connected into the loop, be serially connected with electric capacity between the secondary coil both positive and negative polarity of pulse transformer T1, resistance, and positive pole is connected in series diode D3 in turn, connect output terminal after wave filter L3 and the direct current regulation circuit module; The signal input part of feedback circuit connects the input end of direct current regulation circuit, the signal input part of the output termination pulse control circuit of feedback circuit.So design is simple in structure, reliable and stable.
As optimization, described iron core is divided into left and right sides two parts, and during installation, two parts were fastened on the electric parts, and iron core and coil thereof be provided with insulation crust outward, and corresponding with iron core, insulation crust also is divided into two parts, and is connected by plastic screw.So design adopts plastic screw to connect on the one hand, and convenient the installation is convenient to adjust the saturation magnetic flux density of iron core by regulating gap between iron core two parts, and plastic screw can not generate heat because of producing eddy current loss on the other hand.
The utility model high-voltage switch gear temperature monitoring early warning system has working stability, safe and reliable advantage, is widely used in various high-tension switch cabinets monitoring.
Description of drawings
Below in conjunction with accompanying drawing this high-voltage switch gear temperature monitoring early warning system is described further:
Fig. 1 is the structural representation of this high-voltage switch gear temperature monitoring early warning system embodiment one;
Fig. 2 is the circuit diagram of mu balanced circuit in the utility model;
Fig. 3 is the structural representation of square induction power supply;
Fig. 4 is the structural representation of circular induction power supply;
Fig. 5 is the structural representation of this high-voltage switch gear temperature monitoring early warning system embodiment two;
Fig. 6 is the structural representation of this high-voltage switch gear temperature monitoring early warning system embodiment three.
Among the figure: 1 for radio temperature sensor, 2 for wireless transceiver, 3 for iron core, 4 be electric parts, 5 for coil, 6 for Centralized Monitoring screen, 7 for insulation crust, 8 for plastic screw, 9 for wireless repeater, 10 be that remote monitoring computing machine, T1 are that pulse transformer, L1, L2, L3 are that wave filter, C1, C2, C3, C4 are that filter capacitor, D1 are that voltage stabilizing diode, D2, D3 are that diode, R are resistance.
Specific embodiment
Embodiment one: shown in Fig. 1 to 4, this high-voltage switch gear temperature monitoring early warning system comprises equipment and cabinet external equipment in the cabinet, wherein equipment comprises power supply in a plurality of radio temperature sensors 1 and the cabinet in the cabinet, power supply is radio temperature sensor 1 power supply in the cabinet, the cabinet external equipment comprises wireless transceiver 2, device for detecting temperature and cabinet external power, the cabinet external power is wireless transceiver 2 and device for detecting temperature power supply, the temperature information that wireless transceiver 2 sends radio temperature sensor 1 is sent to temperature and surveys device, it is characterized in that: power supply is an induction power supply in the cabinet, this induction power supply comprises iron core 3, on the electric parts 4 of the mistake that this iron core 3 is centered around high-voltage switch gear, winding around 5 on the iron core 3, a coil 5 and a mu balanced circuit together seal in the feed circuit of radio temperature sensor 1, and under iron core 3 magnetic saturation states, coil 5 output voltages are no more than 10% of its normal working voltage.
Described device for detecting temperature comprises Centralized Monitoring screen 6, and all radio temperature sensors 1 monitor temperature information and all deliver to Centralized Monitoring via wireless transceiver 2 and shield 6 centralized displaying.
Shown in Fig. 3,4, described iron core 3 is divided into left and right sides two parts, and during installation, two parts were fastened on the electric parts 4, and is provided with insulation crust 7 outside iron core 3 and the coil 5 thereof, and corresponding with iron core 3, insulation crust 7 also is divided into two parts, and is connected by plastic screw 8.
Embodiment two: as shown in Figure 5, also be provided with wireless repeater 9 between described Centralized Monitoring screen 6 and the radio temperature sensor 1, all the other structures and parts are referring to embodiment one, slightly.
Embodiment three: as shown in Figure 6, described device for detecting temperature also comprises remote monitoring computing machine 10, this remote monitoring computing machine 10 is incorporated LAN (Local Area Network) into Centralized Monitoring screen 6, all radio temperature sensors 1 monitor temperature information except that shielding at Centralized Monitoring 6 centralized displaying, also be sent to remote monitoring computing machine 10, realize the long-range control of facing by LAN (Local Area Network).
In the foregoing description: described radio temperature sensor 1 comprises temperature sense parts and wireless transmitter module, and wherein the temperature sense parts are temperature acquisition chip 18B20 or RTC thermistor or thermopair radio temperature sensor.
Claims (7)
1. high-voltage switch gear temperature monitoring early warning system, comprise equipment and cabinet external equipment in the cabinet, wherein equipment comprises power supply in a plurality of radio temperature sensors and the cabinet in the cabinet, power supply is the radio temperature sensor power supply in the cabinet, the cabinet external equipment comprises wireless transceiver, device for detecting temperature and cabinet external power, it is characterized in that: power supply is an induction power supply in the cabinet, this induction power supply comprises iron core, this iron core is centered around on the electric parts of mistake of high-voltage switch gear, winding around on the iron core, a coil and a mu balanced circuit together seal in the feed circuit of radio temperature sensor, and under iron core magnetic saturation state, coil output voltage is no more than 10% of its normal working voltage.
2. high-voltage switch gear temperature monitoring early warning system as claimed in claim 1, it is characterized in that: described radio temperature sensor comprises temperature sense parts and wireless transmitter module, and wherein the temperature sense parts are temperature acquisition chip 18B20 or RTC thermistor or thermopair radio temperature sensor.
3. high-voltage switch gear temperature monitoring early warning system as claimed in claim 2 is characterized in that: described device for detecting temperature comprises the Centralized Monitoring screen, and all radio temperature sensors monitor temperature information and all deliver to Centralized Monitoring screen centralized displaying via wireless transceiver.
4. high-voltage switch gear temperature monitoring early warning system as claimed in claim 3 is characterized in that: also be provided with wireless repeater between described Centralized Monitoring screen and the radio temperature sensor.
5. high-voltage switch gear temperature monitoring early warning system as claimed in claim 4, it is characterized in that: described device for detecting temperature also comprises the remote monitoring computing machine, this remote monitoring computing machine is incorporated LAN (Local Area Network) into the Centralized Monitoring screen, all radio temperature sensors monitor temperature information except that Centralized Monitoring screen centralized displaying, also be sent to the remote monitoring computing machine, realize the long-range control of facing by LAN (Local Area Network).
6. as the arbitrary described high-voltage switch gear temperature monitoring early warning system of claim 1 to 5, it is characterized in that: described mu balanced circuit comprises current rectifying and wave filtering circuit, pulse transformer T1, pulse control circuit and feedback circuit, current rectifying and wave filtering circuit comprises wave filter L1, L2 and rectifier bridge, induction power supply coil two ends are respectively through wave filter L1, L2 connects the input end of rectifier bridge, cross-over connection filter capacitor C1 between the rectifier bridge both positive and negative polarity, after voltage stabilizing diode D1 and the diode D2 series connection, be connected across between the pulse transformer T1 primary coil two ends, rectifier bridge, primary coil and pulse control circuit that positive pole meets pulse transformer T1 are connected into the loop, be serially connected with electric capacity between the secondary coil both positive and negative polarity of pulse transformer T1, resistance, and positive pole is connected in series diode D3 in turn, connect output terminal after wave filter L3 and the direct current regulation circuit module; The signal input part of feedback circuit connects the input end of direct current regulation circuit, the signal input part of the output termination pulse control circuit of feedback circuit.
7. high-voltage switch gear temperature monitoring early warning system as claimed in claim 6, it is characterized in that: described iron core is divided into left and right sides two parts, during installation, two parts were fastened on the electric parts, and iron core and coil thereof are provided with insulation crust outward, corresponding with iron core, insulation crust also is divided into two parts, and is connected by plastic screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202797272U CN201666819U (en) | 2009-11-16 | 2009-11-16 | High-voltage switch temperature monitoring and early-warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202797272U CN201666819U (en) | 2009-11-16 | 2009-11-16 | High-voltage switch temperature monitoring and early-warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666819U true CN201666819U (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202797272U Expired - Lifetime CN201666819U (en) | 2009-11-16 | 2009-11-16 | High-voltage switch temperature monitoring and early-warning system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252766A (en) * | 2011-04-19 | 2011-11-23 | 北京航空航天大学 | Switch cabinet contact wireless temperature measurement device with suspension self power supply function |
| CN102062640B (en) * | 2009-11-16 | 2012-06-27 | 淄博正瑞电子有限公司 | High-voltage switch temperature monitoring and early warning system |
| CN102879117A (en) * | 2012-10-25 | 2013-01-16 | 宁夏电力公司银川供电局 | Electric field induction powered disconnector contact temperature online measurement and wireless transmission device |
| CN104390711A (en) * | 2014-11-18 | 2015-03-04 | 湖南工程学院 | Contact thermometer of high-voltage switch cabinet |
| CN107356290A (en) * | 2017-07-26 | 2017-11-17 | 重庆七彩虹数码科技有限公司 | A kind of on off state monitoring method |
-
2009
- 2009-11-16 CN CN2009202797272U patent/CN201666819U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062640B (en) * | 2009-11-16 | 2012-06-27 | 淄博正瑞电子有限公司 | High-voltage switch temperature monitoring and early warning system |
| CN102252766A (en) * | 2011-04-19 | 2011-11-23 | 北京航空航天大学 | Switch cabinet contact wireless temperature measurement device with suspension self power supply function |
| CN102252766B (en) * | 2011-04-19 | 2013-01-09 | 北京航空航天大学 | Switch cabinet contact wireless temperature measurement device with suspension self power supply function |
| CN102879117A (en) * | 2012-10-25 | 2013-01-16 | 宁夏电力公司银川供电局 | Electric field induction powered disconnector contact temperature online measurement and wireless transmission device |
| CN104390711A (en) * | 2014-11-18 | 2015-03-04 | 湖南工程学院 | Contact thermometer of high-voltage switch cabinet |
| CN107356290A (en) * | 2017-07-26 | 2017-11-17 | 重庆七彩虹数码科技有限公司 | A kind of on off state monitoring method |
| CN107356290B (en) * | 2017-07-26 | 2019-12-13 | 重庆七彩虹数码科技有限公司 | switch state monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101208 Effective date of abandoning: 20091116 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20101208 Effective date of abandoning: 20091116 |