CN206292304U - Transformer station's electricity self-operated measuring unit - Google Patents
Transformer station's electricity self-operated measuring unit Download PDFInfo
- Publication number
- CN206292304U CN206292304U CN201621307184.7U CN201621307184U CN206292304U CN 206292304 U CN206292304 U CN 206292304U CN 201621307184 U CN201621307184 U CN 201621307184U CN 206292304 U CN206292304 U CN 206292304U
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- CN
- China
- Prior art keywords
- resistance
- transport
- placing device
- current
- series
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of transformer station's electricity self-operated measuring unit, current transformer, current-to-voltage converting circuit, voltage amplifier circuit, single-chip microcomputer and display circuit, the current signal of the current transformer collection is transmitted to voltage amplifier circuit after being changed through current-to-voltage converting circuit, the current signal is transmitted to single-chip microcomputer after amplifying through voltage amplifier circuit, and single-chip microcomputer is connected with display circuit.Realize the safely and reliably advantage of current signal collection.
Description
Technical field
The utility model is related to electrical measurement field, more particularly to a kind of transformer station's electricity self-operated measuring unit.
Background technology
In power transmission, transformer station is indispensable critical component, and measuring equipment determines in development substation operation
During inspection, personnel need to enter hyperbaric chamber, and test connection easily causes the accident such as touch by mistake.So as to be deposited when transformer station's electric quantity signal is gathered
In the dangerous and collection insecure problem of signal.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of transformer station's electricity automatic measurement
Device, realizes the safely and reliably advantage of current signal collection.
The purpose of this utility model is realized using following technical scheme：
A kind of transformer station's electricity self-operated measuring unit, current transformer, current-voltage conversion circuit, voltage amplifier circuit,
Single-chip microcomputer and display circuit, the current signal of current transformer collection transmitted after being changed through current-voltage conversion circuit to
Voltage amplifier circuit, the current signal is transmitted to single-chip microcomputer after amplifying through voltage amplifier circuit, and single-chip microcomputer is connected with display circuit；
The voltage amplifier circuit, including, transport and placing device A1, transport and placing device A2 and transport and placing device A3, the same phase of the transport and placing device A1
Series resistance R1 and electric capacity C2, resistance between the in-phase input end and output end of input series capacitance C1, the transport and placing device A1
Gone here and there between the inverting input and output end of series resistance R2 between the node and ground between R1 and electric capacity C2, the transport and placing device A1
Connection resistance R3, series resistance R4 between the output end of transport and placing device A1 and the inverting input of transport and placing device A2, transport and placing device A2's is anti-phase
The in-phase input end of series resistance R5 between input and output end, transport and placing device A2 is connected with 2.5V power supplys, and transport and placing device A2's is defeated
Go out series resistance R7 between end and the in-phase input end of transport and placing device A3, connected between the inverting input and output end of transport and placing device A3
Resistance R8, electric capacity C3 is in parallel with resistance R8, series resistance R6 between the inverting input and ground of transport and placing device A3.
Preferably, the resistance value of the resistance R1 is that the resistance value of 100K Ω, the resistance R2 is 100K Ω, the resistance
The resistance value of R3 is 10K Ω, the electricity for the resistance value that the resistance value of 200K Ω, the resistance R4 is 10K Ω, the resistance R5
The resistance value of R6 is hindered for the resistance value that the resistance value of 1K Ω, the resistance R7 is 1K Ω, the resistance R8 is 40K Ω.
Preferably, the capacitance of the electric capacity C1 is that the capacitance of 4.7 μ F, the electric capacity C2 is 3 μ F, the electric capacity C3's
Capacitance is 0.047 μ F.
Compared to existing technology, the beneficial effects of the utility model are：
The technical program, low current is changed into by current transformer by the electric current of transformer station, and low current signal is carried out
" current-voltage " is changed, and is converted into voltage signal and treatment is amplified to voltage signal, so as to reach current signal collection
Safely and reliably purpose.
Brief description of the drawings
Fig. 1 is the theory diagram of the transformer station's electricity self-operated measuring unit described in the utility model embodiment；
Fig. 2 is the electronic circuitry of the voltage amplifier circuit described in the utility model embodiment.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the utility model is described further：
As shown in figure 1, a kind of transformer station's electricity self-operated measuring unit, current transformer, current-voltage conversion circuit, electricity
Pressure amplifying circuit, single-chip microcomputer and display circuit, after the current signal of current transformer collection is changed through current-voltage conversion circuit
Transmit to voltage amplifier circuit, the current signal is transmitted to single-chip microcomputer, single-chip microcomputer and display electricity after amplifying through voltage amplifier circuit
Road connects；
Voltage amplifier circuit is as shown in Fig. 2 including transport and placing device A1, transport and placing device A2 and transport and placing device A3, the same phase of transport and placing device A1
Series resistance R1 and electric capacity C2 between the in-phase input end and output end of input series capacitance C1, transport and placing device A1, resistance R1 and
Series resistance between the inverting input and output end of series resistance R2 between the node and ground between electric capacity C2, transport and placing device A1
Series resistance R4 between the output end of R3, transport and placing device A1 and the inverting input of transport and placing device A2, the inverting input of transport and placing device A2
The in-phase input end of the series resistance R5 between output end, transport and placing device A2 is connected with 2.5V power supplys, the output end of transport and placing device A2 with
Series resistance between the inverting input and output end of series resistance R7 between the in-phase input end of transport and placing device A3, transport and placing device A3
R8, electric capacity C3 is in parallel with resistance R8, series resistance R6 between the inverting input and ground of transport and placing device A3.
Wherein, the resistance value of resistance R1 is 100K Ω, and the resistance value of resistance R2 is 100K Ω, and the resistance value of resistance R3 is
The resistance value of 200K Ω, resistance R4 is 10K Ω, and the resistance value of resistance R5 is 10K Ω, and the resistance value of resistance R6 is 1K Ω, resistance
The resistance value of R7 is 1K Ω, and the resistance value of resistance R8 is 40K Ω.
The capacitance of electric capacity C1 is 4.7 μ F, and the capacitance of electric capacity C2 is 3 μ F, and the capacitance of electric capacity C3 is 0.047 μ F.
The secondary terminals connection overvoltage crowbar of current transformer.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (3)
1. a kind of transformer station's electricity self-operated measuring unit, it is characterised in that current transformer, current-voltage conversion circuit, voltage
Amplifying circuit, single-chip microcomputer and display circuit, the current signal of the current transformer collection are changed through current-voltage conversion circuit
After transmit to voltage amplifier circuit, the current signal is transmitted to single-chip microcomputer after amplifying through voltage amplifier circuit, single-chip microcomputer and display
Circuit is connected；
The voltage amplifier circuit, including, transport and placing device A1, transport and placing device A2 and transport and placing device A3, the homophase input of the transport and placing device A1
Series resistance R1 and electric capacity C2 between the in-phase input end and output end of end series capacitance C1, the transport and placing device A1, resistance R1 and
Series electrical between the inverting input and output end of series resistance R2 between the node and ground between electric capacity C2, the transport and placing device A1
Resistance R3, series resistance R4 between the output end of transport and placing device A1 and the inverting input of transport and placing device A2, the anti-phase input of transport and placing device A2
Series resistance R5 between end and output end, the in-phase input end of transport and placing device A2 is connected with 2.5V power supplys, the output end of transport and placing device A2
Series resistance between the inverting input and output end of the series resistance R7 and the in-phase input end of transport and placing device A3 between, transport and placing device A3
R8, electric capacity C3 is in parallel with resistance R8, series resistance R6 between the inverting input and ground of transport and placing device A3.
2. transformer station's electricity self-operated measuring unit according to claim 1, it is characterised in that the resistance value of the resistance R1
It is 100K Ω, the resistance value of the resistance R2 is 200K Ω, the electricity of the resistance R4 for the resistance value of 100K Ω, the resistance R3
Resistance is 1K Ω, the electricity of the resistance R7 for the resistance value that the resistance value of 10K Ω, the resistance R5 is 10K Ω, the resistance R6
Resistance is 40K Ω for the resistance value of 1K Ω, the resistance R8.
3. transformer station's electricity self-operated measuring unit according to claim 1, it is characterised in that the capacitance of the electric capacity C1
For the capacitance that the capacitance of 4.7 μ F, the electric capacity C2 is 3 μ F, the electric capacity C3 is 0.047 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307184.7U CN206292304U (en) | 2016-11-30 | 2016-11-30 | Transformer station's electricity self-operated measuring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307184.7U CN206292304U (en) | 2016-11-30 | 2016-11-30 | Transformer station's electricity self-operated measuring unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206292304U true CN206292304U (en) | 2017-06-30 |
Family
ID=59096604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621307184.7U Expired - Fee Related CN206292304U (en) | 2016-11-30 | 2016-11-30 | Transformer station's electricity self-operated measuring unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206292304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462841A (en) * | 2017-08-09 | 2017-12-12 | 南京国电南自电网自动化有限公司 | A kind of device for fast detecting for protective relaying device power supply |
| CN108594140A (en) * | 2018-03-14 | 2018-09-28 | 昆山龙腾光电有限公司 | Electronic circuit measurement of power loss device |
-
2016
- 2016-11-30 CN CN201621307184.7U patent/CN206292304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462841A (en) * | 2017-08-09 | 2017-12-12 | 南京国电南自电网自动化有限公司 | A kind of device for fast detecting for protective relaying device power supply |
| CN108594140A (en) * | 2018-03-14 | 2018-09-28 | 昆山龙腾光电有限公司 | Electronic circuit measurement of power loss device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170630 Termination date: 20171130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |