CN202372564U - Online monitoring device of switch cabinet - Google Patents
Online monitoring device of switch cabinet Download PDFInfo
- Publication number
- CN202372564U CN202372564U CN2011203914675U CN201120391467U CN202372564U CN 202372564 U CN202372564 U CN 202372564U CN 2011203914675 U CN2011203914675 U CN 2011203914675U CN 201120391467 U CN201120391467 U CN 201120391467U CN 202372564 U CN202372564 U CN 202372564U
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- voltage
- microprocessor
- converter
- collecting unit
- electric current
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- Expired - Fee Related
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses an online monitoring device of a switch cabinet, which comprises a display, a voltage-current acquisition unit, an A/D (Analog/Digital) converter and a microprocessor, wherein the voltage-current acquisition, the A/D converter and the microprocessor are integrated on the same circuit board, wherein the input end of the voltage-current acquisition unit is connected to an arrester and a capacitance-type support column sensor through lead wires; the arrester and the capacitance-type support column sensor are arranged in the switch cabinet; the output end of the voltage-current acquisition unit is connected with the input end of the A/D converter; the output end of the A/D converter is connected with the input end of the microprocessor; and the output end of the microprocessor is connected to a display through lead wires. The online monitoring device of the switch cabinet has the beneficial effects of being accurately measuring the voltage of circuit-side equipment and the leakage current and the resistive current of the arrester, providing guarantee for safety of operators, being capable of well judging the working conditions of the arrester by detailed data and avoiding accidents caused by damage of the arrester.
Description
Technical field
The utility model relates to a kind of switch cubicle on-Line Monitor Device.
Background technology
High-tension switch cabinet is transformer station's electrical equipment commonly used; The electroscopic device of existing switch cubicle outlet side generally can only have or not charged with diode displaying; But can't carry out in real time, show accurately the charged actual voltage value of equipment, can't comprehensive safety guarantee be provided for the staff.
At present the lightning arrester in the Test Switchboard cabinet is aging generally all is through annual lightning arrester prerun, but in the prerun qualified lightning arrester after in servicely still can be damaged and wear out in advance, cause the accident that is difficult to estimate.
The utility model content
The purpose of the utility model promptly is to overcome the deficiency of present technology; A kind of switch cubicle on-Line Monitor Device is provided; The accurately leakage current of measuring circuit side apparatus voltage and lightning arrester and current in resistance property; For staff's safety provides guarantee, and detailed data can help the staff better to judge the working condition of lightning arrester, avoids because of the aging in advance of lightning arrester or damage causing the accident that is difficult to estimate.
The utility model is realized through following technical scheme: the switch cubicle on-Line Monitor Device; Comprise display and be integrated in electric current and voltage collecting unit, A/D converter and the microprocessor on the same circuit board; The input end of described electric current and voltage collecting unit is connected to lightning arrester and condenser type pillar sensor in the switch cubicle through lead-in wire; The output terminal of electric current and voltage collecting unit connects the input end of A/D converter; The input of the output connecting microprocessor of A/D converter, the output of microprocessor is connected on the display through lead-in wire.
The described electric current and voltage collecting unit of the utility model is the three-phase electric energy acquisition chip; It comprises three voltage analog signal inputs and three current analog signal inputs; Condenser type pillar sensor is as the input block of voltage analog signal in the high-voltage board, and lightning arrester is as the input block of current analog signal.
Be provided with dividing potential drop capacitor C 1, C2 between described electric current and voltage collecting unit and the condenser type pillar sensor.
Be provided with stake resistance R1 between described electric current and voltage collecting unit and the lightning arrester.
The principle of work of the utility model is: after the electric current and voltage collecting unit collects three-phase current and three-phase voltage; Send to A/D converter; A/D converter carries out digital-to-analog conversion with voltage and current signal and re-sends to microprocessor; By microprocessor the three-phase current voltage signal is carried out fast processing, calculate three-phase total current, current in resistance property and voltage value, last microprocessor sends to these numerical value in the display and shows.
The beneficial effect of the utility model is: the accurately leakage current of measuring circuit side apparatus voltage and lightning arrester and current in resistance property; For staff's safety provides guarantee; And detailed data can better be judged the working condition of lightning arrester, the accident of avoiding the damage because of lightning arrester to cause.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further to specify:
As shown in Figure 1; The switch cubicle on-Line Monitor Device; Comprise display and be integrated in electric current and voltage collecting unit, A/D converter and the microprocessor on the same circuit board, the input end of described electric current and voltage collecting unit is connected to lightning arrester and condenser type pillar sensor in the switch cubicle through lead-in wire, and the output terminal of electric current and voltage collecting unit connects the input end of A/D converter; The input of the output connecting microprocessor of A/D converter, the output of microprocessor is connected on the display through lead-in wire.
The described electric current and voltage collecting unit of the utility model is the three-phase electric energy acquisition chip; It comprises three voltage analog signal inputs and three current analog signal inputs; Condenser type pillar sensor is as the input block of voltage analog signal in the high-voltage board, and lightning arrester is as the input block of current analog signal.
Be provided with dividing potential drop capacitor C 1, C2 between described electric current and voltage collecting unit and the condenser type pillar sensor.
Be provided with stake resistance R1 between described electric current and voltage collecting unit and the lightning arrester.
The principle of work of the utility model is: after the electric current and voltage collecting unit collects three-phase current and three-phase voltage; Send to A/D converter; A/D converter carries out digital-to-analog conversion with voltage and current signal and re-sends to microprocessor; By microprocessor the three-phase current voltage signal is carried out fast processing, calculate three-phase total current, current in resistance property and voltage value, last microprocessor sends to these numerical value in the display and shows.
Claims (4)
1. switch cubicle on-Line Monitor Device; It is characterized in that: comprise display and be integrated in electric current and voltage collecting unit, A/D converter and the microprocessor on the same circuit board; The input end of described electric current and voltage collecting unit is connected to lightning arrester and condenser type pillar sensor in the switch cubicle through lead-in wire; The output terminal of electric current and voltage collecting unit connects the input end of A/D converter; The input of the output connecting microprocessor of A/D converter, the output of microprocessor is connected on the display through lead-in wire.
2. switch cubicle on-Line Monitor Device according to claim 1 is characterized in that: described electric current and voltage collecting unit is the three-phase electric energy acquisition chip.
3. switch cubicle on-Line Monitor Device according to claim 1 is characterized in that: be provided with dividing potential drop capacitor C 1, C2 between described electric current and voltage collecting unit and the condenser type pillar sensor.
4. switch cubicle on-Line Monitor Device according to claim 1 is characterized in that: be provided with stake resistance R1 between described electric current and voltage collecting unit and the lightning arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203914675U CN202372564U (en) | 2012-04-06 | 2012-04-06 | Online monitoring device of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203914675U CN202372564U (en) | 2012-04-06 | 2012-04-06 | Online monitoring device of switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372564U true CN202372564U (en) | 2012-08-08 |
Family
ID=46596261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203914675U Expired - Fee Related CN202372564U (en) | 2012-04-06 | 2012-04-06 | Online monitoring device of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372564U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743978A (en) * | 2014-01-06 | 2014-04-23 | 广东省顺德开关厂有限公司 | Multifunction testing device for gas-filled switch cabinet |
| CN104502772A (en) * | 2014-12-29 | 2015-04-08 | 浙江群力电气有限公司 | Electrical parameter monitoring device and intelligent switch cabinet |
-
2012
- 2012-04-06 CN CN2011203914675U patent/CN202372564U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743978A (en) * | 2014-01-06 | 2014-04-23 | 广东省顺德开关厂有限公司 | Multifunction testing device for gas-filled switch cabinet |
| CN104502772A (en) * | 2014-12-29 | 2015-04-08 | 浙江群力电气有限公司 | Electrical parameter monitoring device and intelligent switch cabinet |
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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: 20120808 Termination date: 20130406 |