CN201130208Y - Apparatus for monitoring high-low-voltage distribution cabinet bus infrared current - Google Patents
Apparatus for monitoring high-low-voltage distribution cabinet bus infrared current Download PDFInfo
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- CN201130208Y CN201130208Y CNU2007201742930U CN200720174293U CN201130208Y CN 201130208 Y CN201130208 Y CN 201130208Y CN U2007201742930 U CNU2007201742930 U CN U2007201742930U CN 200720174293 U CN200720174293 U CN 200720174293U CN 201130208 Y CN201130208 Y CN 201130208Y
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- bus
- infrared
- current
- monitoring device
- current monitoring
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Abstract
The utility model relates to an infrared current monitoring device for the bus of high and low voltage distribution box, comprising a bus chamber (1), a connecting bus (2), a main bus (3), a static contact (8) and a moving contact (9). The infrared current monitoring device is characterized in that, a current measuring and matching power supply unit (6) is arranged on the main connecting bus (2) and is connected with a data processing and signal sending device (7); an infrared receiving device (4) is arranged at the corresponding position of the data processing and signal sending device (7) and is connected with a display (10) through a connecting cable (5). The infrared current monitoring device for the bus of high and low voltage distribution box has the advantages of high measuring accuracy and compact size; the insulation problems of prior control circuit and the high voltage component in primary circuit are solved; the insulation problem of the working power lead wire of the measuring device is also solved; magnetic saturation, ferromagnetic resonance and magnetic hysteresis effect are avoided, and assembly and operation are convenient.
Description
One, technical field
The utility model relates to electric equipment manufacturing technology field, relates in particular to the infrared current monitoring device of high-low voltage electric power distribution cabinet bus.
Two, background technology
Electric current in the high-tension switch cabinet is to utilize the mutual inductance principle of high-tension current inductor to measure at present, and high-tension current inductor is made up of iron core, winding, insulation crust etc.There is the problem of following several respects in high-tension current inductor in now using:
1, it is (to require output 5A or 1A such as current transformer by the requirement of electromechanical relay design; And voltage transformer (VT) requires output 100A), so this current transformer, voltage transformer (VT) need the input of big power, power attenuation is big, volume is also big;
2, heaviness and cost height.Along with the raising of transmission voltage grade, for guaranteeing the good insulation increased in size, so along with electric pressure improves, traditional electric current, voltage transformer (VT) volume and cost can be multiplied;
3, measure use occasion and require the signal transmission that enough precision are arranged, and require signal to have big dynamic range in the protection occasion.Electromagnetic current transducer is because of being subjected to the iron core limitation of magnetic saturation, usually in use, and with Verification of Measuring Current Transformer and protective current transformer, separate processes;
4, excessive when short-circuit current, cause current transformer core saturated and make current signal distortion, therefore need complicated and expensive protective device with the signal correction of distortion to its original shape;
5, traditional current transformer, voltage transformer (VT) improve insulation voltage in the mode of filled with oil, because the difficulty of sealing technology is leaked electricity through regular meeting.
Because above-mentioned shortcoming in modern power network, continues in the intelligent High-Voltage Electrical Appliances to use it not too suitable, promptly traditional electric current, voltage transformer (VT) should be to modern electric current, voltage transformer (VT) development.
At the defective of above-mentioned existence, developed a kind of novel current measuring device.
Three, summary of the invention
The purpose of this utility model provides the infrared current monitoring device of a kind of novel high-low voltage electric power distribution cabinet bus, this device is mainly by bus-bar room, connection bus, main bus-bar, infrared receiving device, and connection cable, current measurement device and power supply, data processing and transmission telltale, static contact, moving contact, display screen are formed.In bus-bar room, be provided with many and connect bus, on the connection bus, be provided with current measurement device and power supply source device, and be connected with data processing and transmission telltale, on its corresponding position, be provided with infrared receiving device, and it be connected with display by connection cable; Also the coil with this device current measurement device is enclosed within on the connection bus, measure its electric current, the data-signal of measuring transfers to infrared signal and spreading out of, infrared receiving device passes to display after receiving conversion of signals, display demonstrates the magnitude numerical value of the magnitude of current, and monitor and corresponding the processing according to corresponding setting, adopt the beneficial effect of this device:
1, directly measures.Guaranteed the precision of measuring.Also be convenient to the installation of measurement mechanism.
2, systematic survey has been cancelled the iron core and the insulation crust of original mutual inductor.Measurement mechanism volume in the system is dwindled significantly.
3, Infrared Transmission testing result.Cancel the connection of operation circuit and primary circuit mesohigh element, solved the Insulation Problems of operation circuit and primary circuit mesohigh element.
4, the working power of measurement mechanism is directly provided by the current measurement coil of measurement mechanism.Solved the Insulation Problems of external power supply lead-in wire.
5, the Infrared Transmission mode is adopted in the transmission of measuring-signal, has cancelled the optical fiber in the Optical Fiber Transmission in the general temperature survey, has reduced the manufacturing cost of device.
6, imitation-system measuring apparatus is because the cancellation iron core is avoided problems such as magnetic saturation and ferromagnetic resonance and hysteresis effect.
The infrared current monitoring device of high-low voltage electric power distribution cabinet, the power attenuation that has solved domestic existing high-tension current inductor is big, volume is big, heaviness and cost height, precision is low, measurement range is little, insulating requirements is high and install and use problem such as inconvenience.
Four, description of drawings
Fig. 1 is the structural representation of the infrared current monitoring device of high-low voltage electric power distribution cabinet bus;
Fig. 2 is the structure and the principle of work synoptic diagram of the infrared current monitoring device of high-low voltage electric power distribution cabinet bus.
Among the figure: 1-bus-bar room, 2-connect bus, 3-main bus-bar, 4-infrared receiving device, 5-connection cable, 6-current measurement device and power supply, 7-data processing and send telltale, 8-static contact, 9-moving contact, 10-display screen.
Five, embodiment
The infrared current monitoring device of high-low voltage electric power distribution cabinet bus of the present utility model, embodiment contrast accompanying drawing is further described: this device is by bus-bar room
1, connect bus 2, main bus-bar 3, infrared receiving device 4, connection cable 5, current measurement device and power supply 6, data processing and transmission telltale 7, static contact 8, moving contact 9, display screen 10 are formed.Many in bus-bar room 1 connect bus 2, on main connection bus 2, be provided with current measurement device and power supply 6, and with data processing and send telltale 7 and be connected, on the correspondence position of data processing and transmission telltale 7, be provided with infrared receiving device 4, and be connected with display 10 by connection cable 5; Connection bus 2 is also gone up set static contact 8 with this device and is connected with moving contact 9, realizes that setting requirement by it carries out Current Control.
Claims (2)
1, the infrared current monitoring device of a kind of high-low voltage electric power distribution cabinet bus, it comprises bus-bar room (1), connects bus (2), main bus-bar (3), static contact (8), moving contact (9), it is characterized in that: on connection bus (2), be provided with current measurement and supporting supply unit (6), and with data processing and send telltale (7) and be connected, on the correspondence position of data processing and transmission telltale (7), be provided with infrared receiving device (4), and be connected with display (10) by connection cable (5).
2, by the infrared current monitoring device of high-low voltage electric power distribution cabinet bus of claim 1, it is characterized in that: connection bus (2) is gone up set static contact (8) with this device and is connected with moving contact (9), realizes that setting requirement by it carries out Current Control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201742930U CN201130208Y (en) | 2007-12-20 | 2007-12-20 | Apparatus for monitoring high-low-voltage distribution cabinet bus infrared current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201742930U CN201130208Y (en) | 2007-12-20 | 2007-12-20 | Apparatus for monitoring high-low-voltage distribution cabinet bus infrared current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130208Y true CN201130208Y (en) | 2008-10-08 |
Family
ID=40018070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201742930U Expired - Fee Related CN201130208Y (en) | 2007-12-20 | 2007-12-20 | Apparatus for monitoring high-low-voltage distribution cabinet bus infrared current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130208Y (en) |
-
2007
- 2007-12-20 CN CNU2007201742930U patent/CN201130208Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20121220 |