CN102062640B - High-voltage switch temperature monitoring and early warning system - Google Patents
High-voltage switch temperature monitoring and early warning system Download PDFInfo
- Publication number
- CN102062640B CN102062640B CN200910225299XA CN200910225299A CN102062640B CN 102062640 B CN102062640 B CN 102062640B CN 200910225299X A CN200910225299X A CN 200910225299XA CN 200910225299 A CN200910225299 A CN 200910225299A CN 102062640 B CN102062640 B CN 102062640B
- Authority
- CN
- China
- Prior art keywords
- power supply
- cabinet
- temperature
- voltage switch
- iron core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a high-voltage switch temperature monitoring and early warning system. The power supply voltage in the conventional high-voltage switch cabinet temperature monitoring equipment is instable and the power supply time is short. The high-voltage switch temperature monitoring and early warning system comprises cabinet internal equipment and cabinet external equipment, wherein the cabinet internal equipment comprises a plurality of wireless temperature sensors and a cabinet internal power supply; the cabinet internal power supply supplies power to the wireless temperature sensors; and the cabinet external equipment comprises a wireless transceiver, a temperature monitoring device and a cabinet external power supply. The cabinet internal power supply is an induction power supply comprising an iron core; the iron core winds on a current flowing component of a high-voltage switch; a coil is wound on the iron core; the coil and a voltage-stabilizing circuit are together connected in series to a power supply circuit of the wireless temperature sensors; and when the iron core is positioned in a magnetic saturation state, the coil outputs voltage which does not exceed normal working voltage by 10 percent. The high-voltage switch temperature monitoring and early warning system has the advantages of stable and reliable work, and is widely applied to monitoring various high-voltage switch cabinets.
Description
Technical field
The present invention relates to a kind of high-voltage switch gear temperature monitoring early warning system, belong to high-tension electricity and use 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 control, 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 through 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 up 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 patent of invention " 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 at high temperature is prone to blast, 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 receives 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.
Summary of the invention
The technical matters that the present invention will solve 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 comprises 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, and power supply is the radio temperature sensor power supply in the cabinet, and 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, and 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 present invention uses the self-powered mode of induction power supply, has 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, said 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 through wireless signal, transmission information.
As optimization, said 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 spooler.So Centralized Monitoring is convenient in design.
As optimization, also be provided with wireless repeater between said Centralized Monitoring screen and the radio temperature sensor.So design, wireless transmission distance is far away.
As optimization; Said device for detecting temperature also comprises the remote monitoring computing machine; This remote monitoring computing machine is incorporated LAN into the Centralized Monitoring screen; All radio temperature sensors monitor temperature information except that Centralized Monitoring screen centralized displaying, also are sent to the remote monitoring computing machine through LAN, realize the long-range control of facing.So remote monitoring is convenient in design.
As optimization; Said 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 connect the input end of rectifier bridge respectively through wave filter L1, L2, cross-over connection filter capacitor C1 between the rectifier bridge both positive and negative polarity is after voltage stabilizing diode D1 and the diode D2 series connection; Be connected across between the pulse transformer T1 primary coil two ends; Primary coil and pulse control circuit that rectifier bridge, positive pole meet pulse transformer T1 are connected into the loop, are serially connected with electric capacity, resistance between the secondary coil both positive and negative polarity of pulse transformer T1, and positive pole connects output terminal after being connected in series diode D3, wave filter L3 and direct current regulation circuit module in order; 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, said 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 through regulating gap between iron core two parts, and plastic screw can not generate heat because of producing eddy current loss on the other hand.
High-voltage switch gear temperature monitoring early warning system of the present invention has working stability, safe and reliable advantage, adaptable across 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 among the present invention;
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, and wherein equipment comprises the interior power supply of a plurality of radio temperature sensors 1 and 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, and the cabinet external power is wireless transceiver 2 and device for detecting temperature power supply, and 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, and 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.
Said 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 spooler 2 and shield 6 centralized displaying.
Like Fig. 3, shown in 4, said 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 said Centralized Monitoring screen 6 and the radio temperature sensor 1, and all the other structures and parts are referring to embodiment one, slightly.
Embodiment three: as shown in Figure 6; Said device for detecting temperature also comprises remote monitoring computing machine 10; This remote monitoring computing machine 10 is incorporated LAN into Centralized Monitoring screen 6; All radio temperature sensors 1 monitor temperature information except that shielding at Centralized Monitoring 6 centralized displaying, also are sent to remote monitoring computing machine 10 through LAN, realize the long-range control of facing.
In the foregoing description: said 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. a high-voltage switch gear temperature monitoring early warning system comprises equipment and cabinet external equipment in the cabinet, and 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, and 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, 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.
2. high-voltage switch gear temperature monitoring early warning system as claimed in claim 1; It is characterized in that: said 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: said 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 said 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: said device for detecting temperature also comprises the remote monitoring computing machine; This remote monitoring computing machine is incorporated LAN into the Centralized Monitoring screen; All radio temperature sensors monitor temperature information except that Centralized Monitoring screen centralized displaying, also are sent to the remote monitoring computing machine through LAN, realize remote monitoring.
6. like the arbitrary described high-voltage switch gear temperature monitoring early warning system of claim 1 to 5; It is characterized in that: said 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 connect the input end of rectifier bridge respectively through wave filter L1, L2, cross-over connection filter capacitor C1 between the rectifier bridge both positive and negative polarity is after voltage stabilizing diode D1 and the diode D2 series connection; Be connected across between the pulse transformer T1 primary coil two ends; Primary coil and pulse control circuit that the positive pole of rectifier bridge meets pulse transformer T1 are connected into the loop, are serially connected with electric capacity, resistance between the secondary coil both positive and negative polarity of pulse transformer T1, and positive pole connects output terminal after being connected in series diode D3, wave filter L3 and direct current regulation circuit module in order; 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: said 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 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 |
|---|---|---|---|
| CN200910225299XA CN102062640B (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 |
|---|---|---|---|
| CN200910225299XA CN102062640B (en) | 2009-11-16 | 2009-11-16 | High-voltage switch temperature monitoring and early warning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102062640A CN102062640A (en) | 2011-05-18 |
| CN102062640B true CN102062640B (en) | 2012-06-27 |
Family
ID=43998014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910225299XA Expired - Fee Related CN102062640B (en) | 2009-11-16 | 2009-11-16 | High-voltage switch temperature monitoring and early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102062640B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076103A (en) * | 2011-10-25 | 2013-05-01 | 陈津 | Wireless launching solid-sealed polar pole structure used for on line monitoring high-voltage temperature |
| CN103728031A (en) * | 2013-11-15 | 2014-04-16 | 成都市宏山科技有限公司 | Passive switch cabinet bus temperature rising detecting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051018Y (en) * | 2007-05-31 | 2008-04-23 | 淄博惠工仪器有限公司 | Switch case contact temperature monitoring and alarming system |
| CN101576416A (en) * | 2009-06-23 | 2009-11-11 | 西安工程大学 | System for monitoring contact temperature of high-voltage switch cabinet on line |
| CN201666819U (en) * | 2009-11-16 | 2010-12-08 | 淄博正瑞电子有限公司 | High-voltage switch temperature monitoring and early-warning system |
-
2009
- 2009-11-16 CN CN200910225299XA patent/CN102062640B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201051018Y (en) * | 2007-05-31 | 2008-04-23 | 淄博惠工仪器有限公司 | Switch case contact temperature monitoring and alarming system |
| CN101576416A (en) * | 2009-06-23 | 2009-11-11 | 西安工程大学 | System for monitoring contact temperature of high-voltage switch cabinet on line |
| CN201666819U (en) * | 2009-11-16 | 2010-12-08 | 淄博正瑞电子有限公司 | High-voltage switch temperature monitoring and early-warning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102062640A (en) | 2011-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6204505B2 (en) | Current transformation system in which CT for sensor and CT for power generation are separately provided in parallel on the line, and integrated system for managing this by a wireless communication network | |
| CN102437646B (en) | Wireless temperature and humidity monitoring device for high-voltage switch cabinet | |
| CN106130194B (en) | Radio energy transmission system and wireless power transmission control method | |
| CN201666819U (en) | High-voltage switch temperature monitoring and early-warning system | |
| CN204927711U (en) | Intelligent socket | |
| CN104237604A (en) | Current monitoring warning device for overhead transmission line | |
| CN106229228A (en) | Intelligent leakage circuit breaker | |
| JP2016090581A (en) | Power measuring device and power measuring method, and electric leak detection device and electric leak detection method | |
| CN203537078U (en) | Lightning stroke monitoring device and high-voltage induction power taking system | |
| CN102062640B (en) | High-voltage switch temperature monitoring and early warning system | |
| CN103424209A (en) | Self-powered high-voltage electric power wireless temperature-measurement terminal | |
| CN105044506A (en) | Warehouse electricity utilization monitoring device | |
| CN110829372A (en) | Intelligent anti-harmonic-eliminating PT comprehensive protection device and protection method thereof | |
| CN106451577A (en) | Power source for monitoring device in high-tension switch cabinet | |
| CN104392590A (en) | Wireless power internet-of-things sensor without need of connecting with power supply | |
| CN203705089U (en) | Non-closed magnetic circuit current induction electricity drawing wireless temperature measurement system | |
| CN104483526A (en) | Grounding current induction monitor for power grid transformer | |
| CN204831613U (en) | Wireless temperature sensor | |
| CN201926695U (en) | Arrester action current amplitude monitor | |
| CN103808432A (en) | Current induction electricity-taking wireless temperature measurement system with unclosed magnetic circuit, and micro-power-consumption communication method | |
| CN103116063A (en) | Transformer iron core ground connection electric current monitor | |
| CN105181168A (en) | Wireless temperature sensor | |
| CN206250780U (en) | Monitoring device power supply in high-tension switch cabinet | |
| CN106525265B (en) | Wireless temperature monitoring and indicating device for capacitor | |
| CN203967841U (en) | A kind of wireless delivery of energy system of loose coupling with automatic identification and control function of power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20141116 |
|
| EXPY | Termination of patent right or utility model |