CN103281041A - Collected signal preprocessor of air conditioner control subsystem in transformer substation - Google Patents
Collected signal preprocessor of air conditioner control subsystem in transformer substation Download PDFInfo
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- CN103281041A CN103281041A CN2013102373238A CN201310237323A CN103281041A CN 103281041 A CN103281041 A CN 103281041A CN 2013102373238 A CN2013102373238 A CN 2013102373238A CN 201310237323 A CN201310237323 A CN 201310237323A CN 103281041 A CN103281041 A CN 103281041A
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Abstract
The invention discloses a collected signal preprocessor of an air conditioner control subsystem in a transformer substation. The signal preprocessor comprises a first operational amplifier (A1), a second operational amplifier (A2), a second capacitor (C2), a fourth resistor (R4) and a power supply (VCC). The non-inverting input end of the first operational amplifier (A1) is connected with a collected signal input wire (1), and the inverting input end of the first operational amplifier (A1) is connected with the output end of the first operational amplifier (A1). Two ends of the second capacitor (C2) are connected with the output end of the first operational amplifier (A1) and the non-inverting input end of the second operational amplifier (A2), and the output end of the second operational amplifier (A2) is connected with an amplifying signal output wire (2). By means of the structure, the preprocessor is simple in integral structure, convenient to achieve and low in cost. Fewer components are used. The preprocessor can amplify signals collected by a sensor and reduce loss in the collected signal transmission process.
Description
Technical field
The present invention relates to intelligent substation control technology field, specifically is the collection signal preprocessor of transformer station's hollow regulation and control subsystem processed.
Background technology
Along with industrial expansion, all trades and professions improve day by day to the power supply reliability of electric power system and the requirement of stability, transformer station is as the core link of electric power system, it is used for compiling power supply, lifting voltage and distributes electric energy, undertaking high-low pressure conversion and the power supply task of region, therefore, the safe operation of transformer station is most important to electric power system.
In order to guarantee the reliable and stable operation of transformer station, existing transformer station generally is equipped with the air-conditioning control subsystem.Wherein, the signal that the air-conditioning control subsystem of transformer station monitors according to transducer by its controller when using sends corresponding control, the weak output signal that the transducer of existing air-conditioning control subsystem monitors and when transmitting in the line loss bigger, the weak output signal that this can cause air-conditioning control subsystem middle controller to receive, and then influence control system and make corresponding control.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, providing a kind of can reduce the wastage, and can regulate and control the collection signal preprocessor of subsystem processed to transformer station's hollow that the collection signal amplifies.
Purpose of the present invention is achieved through the following technical solutions: the collection signal preprocessor of transformer station's hollow regulation and control subsystem processed, comprise first operational amplifier, second operational amplifier, second electric capacity, the 4th resistance and power supply, the described first operational amplifier in-phase input end is connected with the collection signal input line, the first operational amplifier inverting input is connected with its output, the described second electric capacity two ends are connected with the second operational amplifier in-phase input end with first operational amplifier output terminal respectively, described the 4th resistance two ends are connected with the second operational amplifier inverting input with power supply respectively, and the output of described second operational amplifier is connected with the amplifying signal output line.Gather the signal that the signal input line receiving sensor collects when the present invention uses, the amplifying signal output line is used for the signal after the present invention handles is exported.
The collection signal preprocessor of transformer station's hollow regulation and control subsystem processed also comprises first resistance, and described first resistance, one end is connected its other end ground connection with the collection signal input line.Wherein, first resistance constitutes the pull down resistor of first operational amplifier.
The collection signal preprocessor of transformer station hollow regulation and control subsystem processed also comprises second resistance, and described second resistance, one end is connected on the circuit between second electric capacity and the second operational amplifier in-phase input end, its other end ground connection.Wherein, first resistance constitutes the pull down resistor of second operational amplifier.
The collection signal preprocessor of transformer station hollow regulation and control subsystem processed also comprises first voltage-stabiliser tube, and the described first voltage-stabiliser tube negative pole is connected on the circuit between the 4th resistance and the second operational amplifier inverting input, the plus earth of first voltage-stabiliser tube.
The collection signal preprocessor of transformer station's hollow regulation and control subsystem processed, also comprise first electric capacity and three resistance in parallel with first electric capacity, described first electric capacity is connected with output with the second operational amplifier inverting input respectively with the parallel branch two ends of the 3rd resistance.Wherein, first electric capacity is used for high-frequency noise and the spike burr of filtered signal.
Compared with prior art, the present invention has following beneficial effect: the first operational amplifier inverting input is connected with its output among (1) the present invention, first operational amplifier constitutes voltage follower, second operational amplifier constitutes pre-amplification circuit, so, first operational amplifier has high input impedance, when cooperating the work of second operational amplifier, when amplify gathering signal, can reduce the wastage, and then can avoid the collection weak output signal of air-conditioning control subsystem middle controller input and influence Based Intelligent Control.
(2) the present invention is connected with second electric capacity between first operational amplifier and second operational amplifier, so, and can the isolated DC voltage signal by second electric capacity when the present invention uses.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The corresponding name of Reference numeral is called in the accompanying drawing: 1, gather signal input line, 2, amplifying signal output line, R1, first resistance, R2, second resistance, R3, the 3rd resistance, R4, the 4th resistance, C1, first electric capacity, C2, second electric capacity, A1, first operational amplifier, A2, second operational amplifier, DW1, first voltage-stabiliser tube, VCC, power supply.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the collection signal preprocessor of transformer station's hollow regulation and control subsystem processed, comprise first operational amplifier A 1, second operational amplifier A 2, second capacitor C 2, the 4th resistance R 4 and power supply VCC, wherein, first operational amplifier A, 1 in-phase input end is connected with collection signal input line 1, the first operational amplifier A 1 inverting input and is connected with its output.Second capacitor C, 2 two ends are connected with second operational amplifier A, 2 in-phase input ends with first operational amplifier A, 1 output respectively, the 4th resistance R 4 two ends are connected with second operational amplifier A, 2 inverting inputs with power supply VCC respectively, and the output of the second operational amplifier A2 is connected with amplifying signal output line 2.
Present embodiment also comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, the first voltage-stabiliser tube DW1 and first capacitor C 1, and wherein, first resistance R, 1 one ends are connected its other end ground connection with collection signal input line 1; Second resistance R, 2 one ends are connected on the circuit between second capacitor C 2 and second operational amplifier A, 2 in-phase input ends, its other end ground connection; The first voltage-stabiliser tube DW1 negative pole is connected on the circuit between the 4th resistance R 4 and second operational amplifier A, 2 inverting inputs, the plus earth of the first voltage-stabiliser tube DW1.First capacitor C 1 is connected with output with second operational amplifier A, 2 inverting inputs respectively with the parallel branch two ends of the 3rd resistance R 3 with the 3rd resistance R 3 formation parallel branches in parallel, first capacitor C 1.
When present embodiment is used, gather signal input line 1 and connect the other end of first operational amplifier A, 1 end relatively for connecting transducer, and amplifying signal output line 2 is used for connecting the controller of air-conditioning control subsystem, gathers signal and finishes signal after through first operational amplifier A 1 and second operational amplifier A 2 and amplify.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that the specific embodiment of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, not breaking away from other execution modes that draw under the technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (5)
1. transformer station's hollow is regulated and control the collection signal preprocessor of subsystem processed, it is characterized in that: comprise first operational amplifier (A1), second operational amplifier (A2), second electric capacity (C2), the 4th resistance (R4) and power supply (VCC), described first operational amplifier (A1) in-phase input end is connected with gathers signal input line (1), first operational amplifier (A1) inverting input is connected with its output, described second electric capacity (C2) two ends are connected with second operational amplifier (A2) in-phase input end with first operational amplifier (A1) output respectively, described the 4th resistance (R4) two ends are connected with second operational amplifier (A2) inverting input with power supply (VCC) respectively, and the output of described second operational amplifier (A2) is connected with amplifying signal output line (2).
2. the collection signal preprocessor of transformer station according to claim 1 hollow regulation and control subsystem processed, it is characterized in that: also comprise first resistance (R1), described first resistance (R1) end is connected its other end ground connection with collection signal input line (1).
3. the collection signal preprocessor of transformer station according to claim 1 hollow regulation and control subsystem processed, it is characterized in that: also comprise second resistance (R2), described second resistance (R2) end is connected on the circuit between second electric capacity (C2) and second operational amplifier (A2) in-phase input end, its other end ground connection.
4. the collection signal preprocessor of transformer station according to claim 1 hollow regulation and control subsystem processed, it is characterized in that: also comprise first voltage-stabiliser tube (DW1), described first voltage-stabiliser tube (DW1) negative pole is connected on the circuit between the 4th resistance (R4) and second operational amplifier (A2) inverting input, the plus earth of first voltage-stabiliser tube (DW1).
5. regulate and control the collection signal preprocessor of subsystem processed according to any described transformer station hollow in the claim 1～4, it is characterized in that: also comprise first electric capacity (C1) and three resistance (R3) in parallel with first electric capacity (C1), described first electric capacity (C1) is connected with output with second operational amplifier (A2) inverting input respectively with the parallel branch two ends of the 3rd resistance (R3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102373238A CN103281041A (en) | 2013-06-17 | 2013-06-17 | Collected signal preprocessor of air conditioner control subsystem in transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102373238A CN103281041A (en) | 2013-06-17 | 2013-06-17 | Collected signal preprocessor of air conditioner control subsystem in transformer substation |
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| CN103281041A true CN103281041A (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102373238A Pending CN103281041A (en) | 2013-06-17 | 2013-06-17 | Collected signal preprocessor of air conditioner control subsystem in transformer substation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038169A (en) * | 2014-06-19 | 2014-09-10 | 国网四川省电力公司成都市新都供电分公司 | Amplification module for detecting signals in gas concentration detecting system of transformer substation |
| CN108593180A (en) * | 2018-04-26 | 2018-09-28 | 国网江西省电力有限公司南昌供电分公司 | A kind of tension transmitter for pole wire tensile measurer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104408A (en) * | 1980-12-23 | 1982-06-29 | Diesel Kiki Co Ltd | Air conditioner for vehicle |
| CN102075150A (en) * | 2010-09-29 | 2011-05-25 | 深圳市蓝韵实业有限公司 | Photoelectric signal preconditioning amplifying circuit of auto iris for digital gastrointestinal machine |
| CN202421428U (en) * | 2011-12-22 | 2012-09-05 | 山西省电力公司吕梁供电分公司 | Hot-line detection equipment for partial discharge of transformer substation |
| CN102710243A (en) * | 2012-06-25 | 2012-10-03 | 深圳青铜剑电力电子科技有限公司 | Protection circuit and protection method of insulated gate device |
| CN203278758U (en) * | 2013-06-17 | 2013-11-06 | 成都荣耀科技有限公司 | Collected signal preceding stage processor of air conditioning control subsystem in transformer substation |
-
2013
- 2013-06-17 CN CN2013102373238A patent/CN103281041A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104408A (en) * | 1980-12-23 | 1982-06-29 | Diesel Kiki Co Ltd | Air conditioner for vehicle |
| CN102075150A (en) * | 2010-09-29 | 2011-05-25 | 深圳市蓝韵实业有限公司 | Photoelectric signal preconditioning amplifying circuit of auto iris for digital gastrointestinal machine |
| CN202421428U (en) * | 2011-12-22 | 2012-09-05 | 山西省电力公司吕梁供电分公司 | Hot-line detection equipment for partial discharge of transformer substation |
| CN102710243A (en) * | 2012-06-25 | 2012-10-03 | 深圳青铜剑电力电子科技有限公司 | Protection circuit and protection method of insulated gate device |
| CN203278758U (en) * | 2013-06-17 | 2013-11-06 | 成都荣耀科技有限公司 | Collected signal preceding stage processor of air conditioning control subsystem in transformer substation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104038169A (en) * | 2014-06-19 | 2014-09-10 | 国网四川省电力公司成都市新都供电分公司 | Amplification module for detecting signals in gas concentration detecting system of transformer substation |
| CN108593180A (en) * | 2018-04-26 | 2018-09-28 | 国网江西省电力有限公司南昌供电分公司 | A kind of tension transmitter for pole wire tensile measurer |
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Application publication date: 20130904 |