CN202533570U - Electrification display device for electric power measuring box - Google Patents
Electrification display device for electric power measuring box Download PDFInfo
- Publication number
- CN202533570U CN202533570U CN2011205695460U CN201120569546U CN202533570U CN 202533570 U CN202533570 U CN 202533570U CN 2011205695460 U CN2011205695460 U CN 2011205695460U CN 201120569546 U CN201120569546 U CN 201120569546U CN 202533570 U CN202533570 U CN 202533570U
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- China
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- converting unit
- display device
- measuring box
- signal processing
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- Expired - Fee Related
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Abstract
The utility model discloses an electrification display device for an electric power measuring box, wherein a high voltage capacitor and a voltage-dividing capacitor that are in series connection are orderly connected between a high voltage bus bar and an earth wire of the measuring box; output signals of the voltage-dividing capacitor are connected to a signal processing unit; the output of the signal processing unit is orderly connected to an A/D converter and an E/O converting unit; the signal processing unit, the A/D converter and the E/O converting unit are respectively connected with the first power source; signals of the E/O converting unit are connected to an O/E converting unit through optical fibers; signals of the O/E converting unit are connected to a display unit and a control unit; and the O/E converting unit, the display unit and the control unit are respectively connected with the second power source. The electrification display device for the electric power measuring box monitors whether the input end of the high voltage measuring box is electrified in a real time way, gives explicit prompts to users, and prevents device mal-operation; and personal safety is ensured.
Description
Technical field
The utility model relates to a kind of charged display device of electric metering box.
Background technology
In order to guarantee the safe operation of electric system, require accurately to electric device or electric operation, prevent the generation of five kinds of pernicious work accidents, that promptly often says five prevents.Five anti-being meant of so-called electric system prevent that mistake from dividing, mistake is closed isolating switch, prevent on-load deciliter disconnector, prevent charged hanging ground-wire or splice grafting ground switch, prevent to be with ground wire or separate grounding switch and close disconnector, prevent mistakenly entering charged chamber.
Five anti-work are classified as one of power department emphasis transformation project for many years always, and prevent that the device of electric misoperation is a lot, such as: Mechanically programm's lock, electromagnetic lock, microcomputer locking or the like.
Electric metering box is as a part and parcel of electric system, and along with industrial expansion, what its application at the scene was suitable popularizes; And; For loss energy-conservation and the minimizing transmission of electric energy, the High-voltage measuring box of user side is more and more, and electric pressure also is increasingly high.
Yet electric metering box, particularly high-voltage power metering case owing to lack high voltage display device, have brought great hidden danger therefore certainly will for operating personnel's the safety and the reliable and stable operation of electric system.
The utility model content
Deficiency to prior art; The utility model provides a kind of charged display device of electric metering box; Whether charged can monitor the High-voltage measuring box input end in real time, and whether charged signal is delivered to luminous or PA-system with the High-voltage measuring box input end, and then make the control corresponding operation.
The technical scheme that the utility model adopts is following: is connected the high-voltage capacitance and the dividing potential drop electric capacity of connecting successively between the high voltage bus of batch meter and the ground wire; The output signal of dividing potential drop electric capacity is connected to signal processing unit; The output of signal processing unit is connected to A/D converter and E/O converting unit successively, and signal processing unit, A/D converter and E/0 converting unit are connected with first power supply respectively; The signal of E/O converting unit is connected to the O/E converting unit through optical fiber, and the signal of O/E converting unit is connected to display unit and control module, and O/E converting unit, display unit and control module are connected with second source respectively.
Further, described first power supply is a solar cell.
Further, described display unit is an acoustic-optic alarm
The utlity model has following good technique effect:
Adopt the charged display device of a kind of electric metering box of the utility model; Whether charged can monitor the High-voltage measuring box input end in real time; And with the High-voltage measuring box input end whether charged signal is delivered to luminous or PA-system; According to the setting of control device, can and then make the control corresponding operation.The utility model detection signal is stable, is not vulnerable to external interference.The utility model can play equipment maloperation and the effect that guarantees personal safety of preventing to the user with clear and definite prompting.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Accompanying drawing is the theory diagram of an embodiment of the utility model.
Among the figure: C1, high-voltage capacitance, C2, dividing potential drop electric capacity.
Embodiment
Referring to accompanying drawing, it is the theory diagram of an embodiment of the utility model.
Among the figure; The high-voltage capacitance C1 and the dividing potential drop capacitor C 2 that are connected series connection between the high voltage bus of batch meter and the ground wire successively; The high voltage bus of batch meter can be High-Voltage Insulation binding post of inlet wire side or the like; Present embodiment employing electric capacity directly connects the dividing potential drop sampling mode of high voltage bus, can guarantee accuracy, stability, the reliability of sampled signal.The output signal of dividing potential drop capacitor C 2 is connected to signal processing unit; Signal is effectively removed various higher hamonic wave signals through Filtering Processing, and the output of signal processing unit is connected to A/D converter and E/O converting unit successively; With the sampling analog signal conversion be digital signal after; Pass through the E/O converting unit again, promptly electricity/optical conversion element makes that finally the simulating signal of sampling becomes light signal.Signal processing unit, A/D converter and E/O converting unit are connected by first power supply respectively supplies power.The external AC220V of the preferential employing of first power supply, DC220V, 110V power supply, in proper working order to guarantee high voltage display device.
Do not have at the scene preferentially to adopt the solar cell for supplying power mode under the situation of external working power.Solar cell for supplying power should be under the continuous situation that did not have the sun in 15 days, can the assurance device operate as normal, also should accomplish non-maintainingly, and the continuous working life-span should reach more than 5 years.Try not to select for use battery (dry cell, rechargeable battery etc.) working power mode,, can't in time change or charge after electric weight exhausts, can influence device and normally use because present transformer station generally all is unattended.
Because sampling is in the high-voltage zone, therefore, in order to guarantee safety, first power supply preferentially adopts the solar cell for supplying power mode.
The signal of E/O converting unit is connected to the O/E converting unit of area of low pressure through optical fiber, i.e. photoelectric conversion unit, and it is remapped sampled signal and is electric signal by light signal.The letter of O/E converting unit
Number be connected to display unit and control module.Display unit should have light, the dual demonstration of sound, warning function, to strengthen the warning effect to the people, so that effectively prevent staff's mistakenly entering charged chamber.Light is preferably flashing mode, and it is red that light is preferably, and brightness should have under the situation of the sun by day, and three meters obviously visual outward.Sound should be not less than 65dB apart from people 30CM place.The output of control module should have blocking function; Normal opened contact, normally closed contact, voltage, electric current output should be set; So that cooperate with all kinds of error-proof devices; Such as: can cooperate with error-proof devices such as electromagnetic lock, Mechanically programm's lock, microcomputer lockings, implement forced blocking, really embody the effect of comprehensive forced blocking.
O/E converting unit, display unit and control module are connected with second source respectively.The external AC220V of the preferential employing of second source, DC220V, 110V power supply, in proper working order to guarantee high voltage display device.
Claims (3)
1. the charged display device of an electric metering box is characterized in that:
The high-voltage capacitance and the dividing potential drop electric capacity that are connected series connection between the high voltage bus of batch meter and the ground wire successively; The output signal of dividing potential drop electric capacity is connected to signal processing unit; The output of signal processing unit is connected to A/D converter and E/O converting unit successively, and signal processing unit, A/D converter and E/O converting unit are connected with first power supply respectively; The signal of E/O converting unit is connected to the O/E converting unit through optical fiber, and the signal of O/E converting unit is connected to display unit and control module, and O/E converting unit, display unit and control module are connected with second source respectively.
2. the charged display device of a kind of electric metering box according to claim 1, it is characterized in that: described first power supply is a solar cell.
3. the charged display device of a kind of electric metering box according to claim 1, it is characterized in that: described display unit is an acoustic-optic alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205695460U CN202533570U (en) | 2011-12-31 | 2011-12-31 | Electrification display device for electric power measuring box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205695460U CN202533570U (en) | 2011-12-31 | 2011-12-31 | Electrification display device for electric power measuring box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202533570U true CN202533570U (en) | 2012-11-14 |
Family
ID=47134746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205695460U Expired - Fee Related CN202533570U (en) | 2011-12-31 | 2011-12-31 | Electrification display device for electric power measuring box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202533570U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706016A (en) * | 2016-08-08 | 2018-02-16 | 上海宝钢工业技术服务有限公司 | Band electric switch storehouse automatic safe alarming device |
| CN112748277A (en) * | 2021-01-20 | 2021-05-04 | 广东电网有限责任公司 | Electrified detection device of ammeter case |
-
2011
- 2011-12-31 CN CN2011205695460U patent/CN202533570U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706016A (en) * | 2016-08-08 | 2018-02-16 | 上海宝钢工业技术服务有限公司 | Band electric switch storehouse automatic safe alarming device |
| CN107706016B (en) * | 2016-08-08 | 2020-07-24 | 上海宝钢工业技术服务有限公司 | Automatic safety warning device for electrified switch cabin |
| CN112748277A (en) * | 2021-01-20 | 2021-05-04 | 广东电网有限责任公司 | Electrified detection device of ammeter case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121114 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |