CN203278758U - Collected signal preceding stage processor of air conditioning control subsystem in transformer substation - Google Patents
Collected signal preceding stage processor of air conditioning control subsystem in transformer substation Download PDFInfo
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- CN203278758U CN203278758U CN 201320343235 CN201320343235U CN203278758U CN 203278758 U CN203278758 U CN 203278758U CN 201320343235 CN201320343235 CN 201320343235 CN 201320343235 U CN201320343235 U CN 201320343235U CN 203278758 U CN203278758 U CN 203278758U
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- operational amplifier
- resistance
- collection signal
- electric capacity
- output
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Abstract
The utility model discloses a collected signal preceding stage processor of an air conditioning control subsystem in a transformer substation. The collected signal preceding stage processor of the air conditioning control subsystem in the transformer substation comprises a first operational amplifier (A1), a second operational amplifier (A2), a second capacitor (C2), a fourth resistor (R4) and a power supply (VCC), wherein a non-inverting input terminal of the first operational amplifier (A1) is connected with a collected signal input wire (1); an inverting input terminal of the first operational amplifier (A1) is connected with an output terminal of the first operational amplifier (A1); two ends of the second capacitor (C2) are respectively connected with the output terminal of the first operational amplifier (A1) and the non-inverting input terminal of the second operational amplifier (A2); an output terminal of the second operational amplifier (A2) is connected with an amplified signal output wire (2). Due to the adoption of the structure, the collected signal preceding stage processor of the air conditioning control subsystem in the transformer substation provided by the utility model is simple in integral structure, is convenient to realize, uses few elements, is low in cost, can amplify signals collected by a sensor in application, and also can lower the loss of the collected signals in the transmission process.
Description
Technical field
The utility model relates to intelligent substation control technology field, specifically level processor before the collection signal of transformer station's hollow regulation and control system system.
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 collecting 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 air-conditioning control subsystem of transformer station when using by its controller according to Sensor monitoring to signal send corresponding control, the Sensor monitoring of existing air-conditioning control subsystem to weak output signal and when transmitting in the line loss larger, the weak output signal that this can cause air-conditioning control subsystem middle controller to receive, and then affect control system and make corresponding control.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and providing a kind of can reduce the wastage, and level processor before the collection signal of the hollow regulation and control system system of transformer station that can amplify collection signal.
the purpose of this utility model is achieved through the following technical solutions: level processor before the collection signal of hollow regulation and control system system of transformer station, comprise the first operational amplifier, the second operational amplifier, the second electric capacity, the 4th resistance and power supply, described the 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, described the second electric capacity two ends respectively with the first operational amplifier output terminal be connected the operational amplifier in-phase input end and be connected, described the 4th resistance two ends respectively with power supply be connected the operational amplifier inverting input and be connected, the output of described the second operational amplifier is connected with the amplifying signal output line.The signal that when the utility model is used, collection signal input line receiving sensor collects, amplifying signal output line are used for the signal after the utility model is processed is exported.
Level processor before the collection signal of hollow regulation and control system system of transformer station also comprises the first resistance, and described the first resistance one end is connected with the collection signal input line, its other end ground connection.Wherein, the first resistance consists of the pull down resistor of the first operational amplifier.
Level processor before the collection signal of transformer station hollow regulation and control system system also comprises the second resistance, and described the second resistance one end is connected on circuit between the second electric capacity and the second operational amplifier in-phase input end, its other end ground connection.Wherein, the first resistance consists of the pull down resistor of the second operational amplifier.
Level processor before the collection signal of transformer station hollow regulation and control system system also comprises the first voltage-stabiliser tube, and described the first voltage-stabiliser tube negative pole is connected on circuit between the 4th resistance and the second operational amplifier inverting input, the plus earth of the first voltage-stabiliser tube.
Level processor before the collection signal of hollow regulation and control system system of transformer station, also comprise the first electric capacity and with the 3rd resistance of the first Capacitance parallel connection, the parallel branch two ends of described the first electric capacity and the 3rd resistance are connected with output with the second operational amplifier inverting input respectively.Wherein, the first electric capacity is used for high-frequency noise and the spike burr of filtered signal.
Compared with prior art, the utlity model has following beneficial effect: in (1) the utility model, the first operational amplifier inverting input is connected with its output, the first operational amplifier consists of voltage follower, the second operational amplifier consists of pre-amplification circuit, so, the first operational amplifier has high input impedance, when coordinating the second operational amplifier work, can reduce the wastage when amplifying collection signal, and then can avoid the collection signal of air-conditioning control subsystem middle controller input faint and affect Based Intelligent Control.
(2) the utility model is connected with the second electric capacity between the first operational amplifier and the second operational amplifier, so, and can the isolated DC voltage signal by the second electric capacity when the utility model is used.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
In accompanying drawing, the corresponding name of Reference numeral is called: 1, collection signal input line, 2, amplifying signal output line, R1, the first resistance, R2, the second resistance, R3, the 3rd resistance, R4, the 4th resistance, C1, the first electric capacity, C2, the second electric capacity, A1, the first operational amplifier, A2, the second operational amplifier, DW1, the first voltage-stabiliser tube, VCC, power supply.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, level processor before the collection signal of hollow regulation and control system system of transformer station, comprise the first operational amplifier A 1, the second operational amplifier A 2, the second capacitor C 2, the 4th resistance R 4 and power supply VCC, wherein, the 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.The second capacitor C 2 two ends respectively with the first operational amplifier A 1 output be connected operational amplifier A 2 in-phase input ends and be connected, the 4th resistance R 4 two ends respectively with power supply VCC be connected operational amplifier A 2 inverting inputs and be connected, the output of the second operational amplifier A2 is connected with amplifying signal output line 2.
The present embodiment also comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first voltage-stabiliser tube DW1 and the first capacitor C 1, and wherein, the first resistance R 1 one ends are connected with collection signal input line 1, its other end ground connection; The second resistance R 2 one ends are connected on circuit between the second capacitor C 2 and the 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 circuit between the 4th resistance R 4 and the second operational amplifier A 2 inverting inputs, the plus earth of the first voltage-stabiliser tube DW1.The first capacitor C 1 and the 3rd resistance R 3 formation in parallel parallel branch, the parallel branch two ends of the first capacitor C 1 and the 3rd resistance R 3 are connected with output with the second operational amplifier A 2 inverting inputs respectively.
When the present embodiment is used, the other end that collection signal input line 1 connects the first operational amplifier A 1 end relatively is used for connecting sensor, and amplifying signal output line 2 is used for connecting the controller of air-conditioning control subsystem, collection signal through the first operational amplifier A 1 and the second operational amplifier A 2 after settling signal amplify.
Above content is the further description of the utility model being done in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not breaking away from other execution modes that draw under the technical solution of the utility model, all should be included in protection range of the present utility model.
Claims (5)
1. transformer station's hollow regulates and controls the front level processor of collection signal of system system, it is characterized in that: comprise the first operational amplifier (A1), the second operational amplifier (A2), the second electric capacity (C2), the 4th resistance (R4) and power supply (VCC), described the first operational amplifier (A1) in-phase input end is connected with collection signal input line (1), the first operational amplifier (A1) inverting input is connected with its output, described the second electric capacity (C2) two ends respectively with the first operational amplifier (A1) output be connected operational amplifier (A2) in-phase input end and be connected, described the 4th resistance (R4) two ends respectively with power supply (VCC) be connected operational amplifier (A2) inverting input and be connected, the output of described the second operational amplifier (A2) is connected with amplifying signal output line (2).
2. level processor before the collection signal of transformer station according to claim 1 hollow regulation and control system system, it is characterized in that: also comprise the first resistance (R1), described the first resistance (R1) end is connected with collection signal input line (1), its other end ground connection.
3. level processor before the collection signal of transformer station according to claim 1 hollow regulation and control system system, it is characterized in that: also comprise the second resistance (R2), described the second resistance (R2) end is connected on circuit between the second electric capacity (C2) and the second operational amplifier (A2) in-phase input end, its other end ground connection.
4. level processor before the collection signal of transformer station according to claim 1 hollow regulation and control system system, it is characterized in that: also comprise the first voltage-stabiliser tube (DW1), described the first voltage-stabiliser tube (DW1) negative pole is connected on circuit between the 4th resistance (R4) and the second operational amplifier (A2) inverting input, the plus earth of the first voltage-stabiliser tube (DW1).
5. level processor before the collection signal of hollow regulation and control system system of any one described transformer station according to claim 1～4, it is characterized in that: also comprise the first electric capacity (C1) and three resistance (R3) in parallel with the first electric capacity (C1), the parallel branch two ends of described the first electric capacity (C1) and the 3rd resistance (R3) are connected with output with the second operational amplifier (A2) inverting input respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320343235 CN203278758U (en) | 2013-06-17 | 2013-06-17 | Collected signal preceding stage processor of air conditioning control subsystem in transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320343235 CN203278758U (en) | 2013-06-17 | 2013-06-17 | Collected signal preceding stage processor of air conditioning control subsystem in transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203278758U true CN203278758U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320343235 Expired - Fee Related CN203278758U (en) | 2013-06-17 | 2013-06-17 | Collected signal preceding stage processor of air conditioning control subsystem in transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203278758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281041A (en) * | 2013-06-17 | 2013-09-04 | 成都荣耀科技有限公司 | Collected signal preprocessor of air conditioner control subsystem in transformer substation |
-
2013
- 2013-06-17 CN CN 201320343235 patent/CN203278758U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281041A (en) * | 2013-06-17 | 2013-09-04 | 成都荣耀科技有限公司 | Collected signal preprocessor of air conditioner control subsystem in transformer substation |
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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: 20131106 Termination date: 20140617 |
|
| EXPY | Termination of patent right or utility model |