CN103872779A - Air switch state remote monitoring device - Google Patents
Air switch state remote monitoring device Download PDFInfo
- Publication number
- CN103872779A CN103872779A CN201410112895.8A CN201410112895A CN103872779A CN 103872779 A CN103872779 A CN 103872779A CN 201410112895 A CN201410112895 A CN 201410112895A CN 103872779 A CN103872779 A CN 103872779A
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- air switch
- optical coupler
- remote monitoring
- input
- optocoupler
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Abstract
The invention relates to an air switch state remote monitoring device which comprises a current-limiting resistance, an optical coupler, and a current board. The current-limiting resistance is connected to an input pin of the optical coupler in series, the output end of the optical coupler is provided with an output terminal and an output terminal, the input end of the optical coupler is provided with an input terminal and an input terminal, the input terminal is connected to an air switch through a lead, and the output terminal provides an electrical independent contact for automatic monitoring. According to the air switch state remote monitoring device, the input end of the optical coupler is used to collect current states of the air switch so as to judge the actual position of the air switch, the output end of the optical coupler is used to provide switching value for protective automatic equipment, and the switching value is transmitted to a remote workstation through the protective automatic equipment so that the remote workstation can conduct real time monitoring to the actual position of each air switch. Switch output function of the optical coupler is applied and simple circuit is used to judge the actual position of the air switch, and different wiring methods of the air switch state remote monitoring device are capable of offering accurate position information for state remote monitoring of a single pole air-switch, a single-phase air switch and a three-phase air-switch.
Description
Technical field
The present invention relates to power automation remote signalling fields of measurement, especially relate to a kind of air switch status remote monitoring device.
Background technology
At present, known air switch status remote monitoring device is that a docking point by being connected with air switch operation part is realized.Because shell and the intermediate isolating part of air switch all make made of plastic, in the time that air switch institute on-load is larger, can cause air switch overheated, cause parts of plastics to expand, because the contact of status remote monitoring moves by machine driving, in the time that air switch is overheated, often there is the phenomenon of misoperation in the contact of status remote monitoring, affected the accuracy of automation far-end monitoring.On-the-spot urgent need can highly reliable high accuracy air switch status remote monitoring device.
Summary of the invention
In order to overcome the deficiency of existing air switch status remote monitoring device, the invention provides the air switch status remote monitoring device that a kind of safe accuracy is high, it is made up of current-limiting resistance, optocoupler, binding post and circuit board, utilize optocoupler in the time that input side has electric current input, the feature that can provide switching value to change at outlet side, input is connected on the terminal of air switch, change along with cut-offfing of air switch is closed, the variation of the output switching value of optocoupler judges the actual change state of air switch.Reasonable in design, simple in structure, performance factor 100%, fast wiring, isolates by photoelectricity, can not impact to automation equipment long service life.
The technical solution adopted for the present invention to solve the technical problems is:
Air switch status remote monitoring device, include current-limiting resistance, optocoupler and circuit board, the input pin of optocoupler is received in current-limiting resistance series connection, optocoupler output is provided with two lead-out terminals, optocoupler input is provided with two input terminals, input terminal is received on air switch by lead-in wire, and lead-out terminal provides without source contact for automatically-monitored.
The beneficial effect that the present invention has is:
1, the current-limiting resistance of air switch status remote monitoring device of the present invention is connected in series with the input of optocoupler, receive on the terminal of air switch, gather the electric parameters of air switch, the output of optocoupler provides without source contact for automation remote signalling, the electric parameters of reflection air switch changes, this reasonable in design, simple in structure, performance factor 100%, fast wiring, isolate by photoelectricity, can not impact to automation equipment long service life.
2, the present invention is through the input of current-limiting resistance series connection optocoupler; receive on the binding post of air switch; input by optocoupler gather air switch current status; judge the physical location of air switch; provide switching value with the output of optocoupler for protection automation equipment; be transferred to remote workstation by protection automation equipment, so that the remote workstation physical location of the each air switch of monitoring in real time.Solve air switch state misoperation in the past, affected the problem of remote monitoring.
3, the present invention utilizes the switch output function of optocoupler, judges the physical location of air switch by ball bearing made using, different mode of connections of the present invention, can realize to one pole sky open, single-phase sky opens and opens status remote monitoring with three-phase sky accurate location information is provided.Use during to on-the-spot air switch status monitoring in transformer station (or power plant) relay automation, can effectively prevent mistake photos and sending messages, improve the accuracy rate of information.Meet the requirement of intelligent grid, not affected by extraneous clutter, there is no machine driving, long service life.Solve the problem of air switch state wrong report in the past.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is principle schematic of the present invention;
Fig. 2 is that the present invention is arranged on the schematic diagram that one pole sky is opened;
Fig. 3 is that the present invention is arranged on the schematic diagram that single-phase sky is opened;
Fig. 4 is that the present invention is arranged on the schematic diagram that three-phase sky is opened.
1. circuit boards in figure, 2. current-limiting resistance, 3. optocoupler, 4. lead-out terminal, 5. lead-out terminal, 6. input terminal, 7. input terminal.
Embodiment
In Fig. 1, each parts are installed on circuit board 1, the input pin of optocoupler 3 is received in current-limiting resistance 2 series connection, and optocoupler 3 outputs are provided with lead-out terminal 4 and lead-out terminal 5, and optocoupler 3 inputs are provided with input terminal 6 and input terminal 7. Input terminal 6,7 is received on air switch by lead-in wire, and lead-out terminal 4,5 provides without source contact for automatically-monitored, can orientate any lead- out terminal 4,5 one end as 801 common ports.In the time of transformer station or power plant protection automation remote monitoring air switch state, use, can effectively prevent the problem of remote signalling mistaking signal.
Shown in Fig. 2, be the present invention to be opened to the principle schematic using at one pole sky, one pole sky is opened in co-bit, between input terminal 6,7, there is no voltage, optocoupler input no current process, luminous tube is not worked, the output of optocoupler is opened, and in protection automation equipment, empty this one pole of this state called after switching is closed; One pole sky is opened in point position, between input terminal 6,7, does not have voltage, and optocoupler input has electric current process, luminous tube work, and the output closure of optocoupler is opened this one pole sky of this state called after separately in protection automation equipment.Solve the problem of known mistaking signal, guaranteed the correctness of signal, greatly improved monitor staff's judgment accuracy.
Figure 3 shows that the present invention opens the principle schematic using at single-phase sky, single-phase sky is opened in co-bit, between input terminal 6,7, there is voltage, optocoupler input has electric current process, luminous tube work, the output closure of optocoupler is closed empty this one pole of this state called after switching in protection automation equipment; Single-phase sky is opened in point position, between input terminal 6,7, does not have voltage, optocoupler input no current process, and luminous tube is not worked, and the output of optocoupler is opened, and in protection automation equipment, this one pole sky of this state called after is opened separately.
Figure 4 shows that the present invention opens the principle schematic using at three-phase sky, be connected on two cover apparatus of the present invention respectively on any two phase output terminals that three-phase sky opens the same Fig. 3 of principle.Three-phase sky is opened in co-bit, between input terminal 6,7, has voltage, and optocoupler input has electric current process, luminous tube work, and the output closure of optocoupler is closed empty this one pole of this state called after switching in protection automation equipment; Three-phase sky is opened in point position, between input terminal 6,7, does not have voltage, optocoupler input no current process, and luminous tube is not worked, and the output of optocoupler is opened, and in protection automation equipment, this one pole sky of this state called after is opened separately.
Claims (1)
1. air switch status remote monitoring device, it is characterized in that including current-limiting resistance, optocoupler and circuit board, the input pin of optocoupler is received in current-limiting resistance series connection, optocoupler output is provided with two lead-out terminals, optocoupler input is provided with two input terminals, input terminal is received on air switch by lead-in wire, and lead-out terminal provides without source contact for automatically-monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112895.8A CN103872779A (en) | 2014-03-25 | 2014-03-25 | Air switch state remote monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112895.8A CN103872779A (en) | 2014-03-25 | 2014-03-25 | Air switch state remote monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103872779A true CN103872779A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410112895.8A Pending CN103872779A (en) | 2014-03-25 | 2014-03-25 | Air switch state remote monitoring device |
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| CN (1) | CN103872779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325183A (en) * | 2021-12-20 | 2022-04-12 | 广西交控智维科技发展有限公司 | Cabinet state monitoring circuit and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055284A (en) * | 2007-03-12 | 2007-10-17 | 上海安科瑞电气有限公司 | Single-phase multiple-loop monitoring device and its implement method |
| CN102175943A (en) * | 2011-02-12 | 2011-09-07 | 中兴通讯股份有限公司 | Load overcurrent protector state detection device and method |
| CN202770951U (en) * | 2012-09-24 | 2013-03-06 | 辽宁省电力有限公司大连供电公司 | Remote signal acquisition circuit with direct current grounding automatic line selection function |
| CN203800704U (en) * | 2014-03-25 | 2014-08-27 | 国家电网公司 | Remote monitoring device for state of air switch |
-
2014
- 2014-03-25 CN CN201410112895.8A patent/CN103872779A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055284A (en) * | 2007-03-12 | 2007-10-17 | 上海安科瑞电气有限公司 | Single-phase multiple-loop monitoring device and its implement method |
| CN102175943A (en) * | 2011-02-12 | 2011-09-07 | 中兴通讯股份有限公司 | Load overcurrent protector state detection device and method |
| CN202770951U (en) * | 2012-09-24 | 2013-03-06 | 辽宁省电力有限公司大连供电公司 | Remote signal acquisition circuit with direct current grounding automatic line selection function |
| CN203800704U (en) * | 2014-03-25 | 2014-08-27 | 国家电网公司 | Remote monitoring device for state of air switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325183A (en) * | 2021-12-20 | 2022-04-12 | 广西交控智维科技发展有限公司 | Cabinet state monitoring circuit and method |
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Application publication date: 20140618 |