CN108918981A - One kind being based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields - Google Patents
One kind being based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields Download PDFInfo
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- CN108918981A CN108918981A CN201811029597.7A CN201811029597A CN108918981A CN 108918981 A CN108918981 A CN 108918981A CN 201811029597 A CN201811029597 A CN 201811029597A CN 108918981 A CN108918981 A CN 108918981A
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- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000007651 thermal printing Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 6
- 230000006978 adaptation Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
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- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses one kind to be based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, including processor, DC voltage sampling, DC current sampling, AD converter, 12C memory, USB flash disk processing, touch liquid crystal, thermal printer and R type transformer, the DC voltage sampling, DC current sampling, AD converter, I2C memory, USB flash disk processing, touch liquid crystal and thermal printer are all connected to processor, R type transformer is connected with RCL test power supply and alternating current source gear, RCL test power supply and alternating current source gear are connected to processor, RCL test power supply is also connected with constant-current source and gear and four-end method measurement terminal.Based on the micro- inductance comprehensive tester clever structure of ± 500kV converter station DC fields, capacitor, inductance and direct resistance metering are integrated together, a tractor serves several purposes is reached, more preferable more convenient adaptation on-the-spot test needs；And primary connection completes the test for inductance+directly hinder, and improves the working efficiency of field personnel.
Description
Technical field
The present invention relates to skill converter station surveying fields, specially a kind of to be based on the micro- inductance of ± 500kV converter station DC fields
Comprehensive tester.
Background technique
There are many capacitor, inductance, circuit resistance tester in the market.Wherein field portable electric inductance measuring-testing instrument measurement range
It is small, precision is low, can only measure milihenry grade (mH) inductance, microhenry (μ H) grade inductance is unable to measure, on the market without portable microhenry
Grade electric inductance measuring-testing instrument, therefore, the micro- inductance original part of converter station DC fields can not carry out test job in recent years；It can only be to converter station
In capacitor and loop resistance measure.Therefore, it is badly in need of being not only capable of measuring converter station capacitor, loop resistance, but also is capable of measuring direct current
The integrative test instrument of micro- inductance original part in.
Summary of the invention
The purpose of the present invention is to provide one kind to be based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, will be electric
Hold, inductance and direct resistance metering are integrated together, and reach a tractor serves several purposes, more preferable more convenient adaptation on-the-spot test needs；And it is primary
The test for inductance+directly hinder is completed in wiring, improves the working efficiency of field personnel, solves the problems of the prior art.
To achieve the above object, the present invention provides the following technical solutions：One kind being based on the micro- electricity of ± 500kV converter station DC fields
Sense comprehensive tester, including the sampling of processor, DC voltage, DC current sampling, AD converter, 12C memory, USB flash disk processing,
Touch liquid crystal, thermal printer and R type transformer, the DC voltage sampling, DC current sampling, AD converter, I2C storage
Device, USB flash disk processing, touch liquid crystal and thermal printer are all connected to processor, and R type transformer is connected with RCL test power supply and friendship
Stream source gear, RCL test power supply and alternating current source gear are connected to processor, and RCL test power supply is also connected with constant-current source and gear
With four-end method measurement terminal, constant-current source and gear are connected to processor；
DC voltage sampling includes relay J1, switching diode D32 and socket P-Uin, the pin 1 of the relay J1
Connect 12V power supply, 1 circuit interface of pin of a relay termination J1 of switching diode D32, the pin of another relay termination J1
10 circuit interfaces, the 1 connecting resistance Rm1 of pin of socket P-Uin, the pin 8 of resistance Rm1 contact relay J1；
DC current sampling includes operational amplifier Um14, Um2, and the pin 4 of the operational amplifier Um14 connects voltage negative
Pole V-, pin 7 meet positive polarity V+, and the pin 3 of operational amplifier Um2 meets voltage cathode V-, pin 8 meets positive polarity V+, fortune
The pin 6 for calculating amplifier Um14 connects the pin 10 of operational amplifier Um2；
12C memory includes control chip U3, storage chip U8 and temperature acquisition sensing chip U7, the control chip U3
Pin 5,6 connect the pin 5,6 of storage chip U8, the pin 8 of control chip U3 connects 3.3V power supply, the pin 8 of storage chip U8
Circuit interface connects 3.3V power supply, and the pin 1,2 of temperature acquisition sensing chip U7 connects the pin 5,6 of control chip U3, temperature acquisition
The pin 8 of sensing chip U7 connects 3.3V power supply；
USB flash disk processing includes file management control chip U15 and protection chip U13, and the pin 6 of the protection chip U13 connects
File management controls 10 circuit interface of pin of chip U15, and the pin 3 of protection chip U13 connects file management control chip U15's
5 circuit interface of pin of 11 circuit interface of pin, protection chip U13 connects 3.3V power supply.
Preferably, the AD converter is 16 a kind of, 6 Channel Synchronous sampling modulus data acquisition system AD7606.
Preferably, the model dsPIC33FJ256MC710 of the processor.
Preferably, the touch liquid crystal is a kind of 800 × 600 graphic dot matrix K600+ kernel 65K color DGUS screen of 8.0 English.
Preferably, the thermal printer uses serial ports Transistor-Transistor Logic level.
Preferably, the model TF2-12V of the relay J1, the model OP07 of operational amplifier Um14, operation are put
The model AD8253 of big device Um2, model 24LC64SC, the model 24C512 of storage chip U8, temperature for controlling chip U3
The model MCP9801SN of degree acquisition sensing chip U7, the model CH376 of file management control chip U15, protection chip
The model CH412A of U13.
Compared with prior art, beneficial effects of the present invention are as follows：
Based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, clever structure, by capacitor, inductance and straight resistance
Test is integrated together, and reaches a tractor serves several purposes, and more preferable more convenient adaptation on-the-spot test needs；And primary connection completion inductance+
The test directly hindered improves the working efficiency of field personnel, avoids repeatedly climbing wiring.It is real in converter station detection test
Existing precision reaches the measurement operation of microhenry rank, reinforces precision, reduces measurement error and dispersibility, guarantee test data it is accurate
Property while improve working efficiency, promote the smooth development of converter station annual overhaul work, the safe operation for improving power grid is reliable
Property, it has a extensive future.
Detailed description of the invention
Fig. 1 is system module figure of the invention；
Fig. 2 is DC voltage sample circuit figure of the invention；
Fig. 3 is DC current sample circuit figure of the invention；
Fig. 4 is 12C memory circuit figure of the invention；
Fig. 5 is USB flash disk processing circuit figure of the invention；
Fig. 6 is micro- inductance precise measurement schematic diagram of the invention.
In figure：1, processor；2, DC voltage samples；3, DC current samples；4, AD converter；5,12C memory；6,
USB flash disk processing；7, touch liquid crystal；8, thermal printer；9, R type transformer；10, RCL tests power supply；11, alternating current source gear；12,
Constant-current source and gear；13, four-end method measurement terminal.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please referring to Fig. 1-6, one kind is based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, including processor 1,
DC voltage sampling 2, DC current sample 3, AD converter 4,12C memory 5, and USB flash disk handles 6, touch liquid crystal 7, thermal printing
Machine 8 and R type transformer 9, DC voltage sampling 2, DC current sample 3, AD converter 4, I2C memory 5, USB flash disk processing 6, touching
Draining crystalline substance 7 and thermal printer 8 are all connected to processor 1, and R type transformer 9 is connected with RCL test power supply 10 and alternating current source gear
11, RCL test power supplys 10 and alternating current source gear 11 are connected to processor 1, and RCL test power supply 10 is also connected with constant-current source and gear
12 and four-end method measurement terminal 13, constant-current source and gear 12 be connected to processor 1；Wherein, touch liquid crystal 7 is 8.0 inches a kind of
800 × 600 graphic dot matrix K600+ kernel 65K color DGUS screens, thermal printer 8 use serial ports Transistor-Transistor Logic level；Due to AD converter 4
Modulus data acquisition system AD7606 is sampled for 16 a kind of, 6 Channel Synchronous, therefore when sampling rate is 200ksps, it has
There is the anti-aliasing rejection characteristic of 40dB；And 16 position digital signal controller of dsPIC33FJ256MC710 high-performance is used, make processor
1 operating rate with 40MIPS；
DC voltage sampling 2 includes relay J1, switching diode D32 and the socket P-Uin of model TF2-12V, after
The pin 1 of electric appliance J1 connects 12V power supply, 1 circuit interface of pin of a relay termination J1 of switching diode D32, another termination
10 circuit interface of pin of relay J1, the 1 connecting resistance Rm1 of pin of socket P-Uin, the pin 8 of resistance Rm1 contact relay J1；
The Um2 of DC current sampling 3 operational amplifier Um14 and model AD8253 including model OP07, operation are put
The pin 4 of big device Um14 meets voltage cathode V-, pin 7 meets positive polarity V+, and the pin 3 of operational amplifier Um2 connects voltage cathode
V-, pin 8 meet positive polarity V+, and the pin 6 of operational amplifier Um14 connects the pin 10 of operational amplifier Um2；
12C memory 5 includes the storage chip U8 and type of the control chip U3 of model 24LC64SC, model 24C512
Number temperature acquisition sensing chip U7 for being MCP9801SN, the pin 5,6 of control chip U3 connect the pin 5,6 of storage chip U8, control
The pin 8 of coremaking piece U3 connects 3.3V power supply, and 8 circuit interface of pin of storage chip U8 connects 3.3V power supply, and temperature acquisition senses core
The pin 1,2 of piece U7 connects the pin 5,6 of control chip U3, and the pin 8 of temperature acquisition sensing chip U7 connects 3.3V power supply；
The protection chip of file management control chip U15 and model C H412A of the USB flash disk processing 6 including model CH376
U13, the pin 6 of protection chip U13 connect 10 circuit interface of pin of file management control chip U15, protect the pin of chip U13
3 connect 11 circuit interface of pin of file management control chip U15, and 5 circuit interface of pin of protection chip U13 connects 3.3V power supply.
Micro- inductance precise measurement principle：Transformer exports 20V or 2.0V test voltage, is connected to reactor by p-wire
On busbar connector.Bus bar voltage, and be introduced on the voltage detecting circuit of instrument internal by p-wire；By signal condition electricity
Road, which is sent to AD converter 4, becomes digital signal, then signal is sent to processor 1 and is handled；The electric current I of inductance Lx to be measured, warp
After crossing clamp CT sampling and programming amplifying processing, digital signal is become by AD converter 4, is sent to the processing of processor 1；Processor
1 handles the voltage and current digital signal received, and obtains the phase of voltage U and inductive current Ic and voltage and electric current
Then angle is pressed：
Z=U/I；
R=Z*cos (φ)；
X=2 π fL
Inductance：L=(√ (Z*Z-R*R))/(2 π f)；
Explanation：F is frequency；R resistive component；Impedance Z, φ voltage and current phase angle.
In summary：Based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, clever structure, by capacitor, electricity
Sense and direct resistance metering are integrated together, and reach a tractor serves several purposes, and more preferable more convenient adaptation on-the-spot test needs；And primary connection is complete
At the test for inductance+directly hinder, the working efficiency of field personnel is improved, avoids repeatedly climbing wiring.On-the-spot test carries just
It is convenient and practical；In converter station detection test, realizes that precision reaches the measurement operation of microhenry rank, reinforce precision, reduce measurement
Error and dispersibility, the accuracy of guarantee test data while, improve working efficiency, promote converter station annual overhaul work
Smoothly carry out, improves the safe operation reliability of power grid, have a extensive future.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. one kind is based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, including processor (1), DC voltage sample
(2), DC current samples (3), AD converter (4), 12C memory (5), and USB flash disk handles (6), touch liquid crystal (7), thermal printing
Machine (8) and R type transformer (9), it is characterised in that：The DC voltage sampling (2), DC current sample (3), AD converter
(4), I2C memory (5), USB flash disk processing (6), touch liquid crystal (7) and thermal printer (8) are all connected to processor (1), and R type becomes
Depressor (9) is connected with RCL test power supply (10) and alternating current source gear (11), and RCL tests power supply (10) and alternating current source gear (11)
It being connected to processor (1), RCL test power supply (10) is also connected with constant-current source and gear (12) and four-end method measurement terminal (13),
Constant-current source and gear (12) are connected to processor (1)；
It includes relay J1, switching diode D32 and socket P-Uin, the pin 1 of the relay J1 that DC voltage, which samples (2),
Connect 12V power supply, 1 circuit interface of pin of a relay termination J1 of switching diode D32, the pin of another relay termination J1
10 circuit interfaces, the 1 connecting resistance Rm1 of pin of socket P-Uin, the pin 8 of resistance Rm1 contact relay J1；
It includes operational amplifier Um14, Um2 that DC current, which samples (3), and the pin 4 of the operational amplifier Um14 connects voltage cathode
V-, pin 7 meet positive polarity V+, and the pin 3 of operational amplifier Um2 meets voltage cathode V-, pin 8 connects positive polarity V+, operation
The pin 6 of amplifier Um14 connects the pin 10 of operational amplifier Um2；
12C memory (5) includes control chip U3, storage chip U8 and temperature acquisition sensing chip U7, the control chip U3
Pin 5,6 connect the pin 5,6 of storage chip U8, the pin 8 of control chip U3 connects 3.3V power supply, the pin 8 of storage chip U8
Circuit interface connects 3.3V power supply, and the pin 1,2 of temperature acquisition sensing chip U7 connects the pin 5,6 of control chip U3, temperature acquisition
The pin 8 of sensing chip U7 connects 3.3V power supply；
USB flash disk processing (6) includes file management control chip U15 and protection chip U13, and the pin 6 of the protection chip U13 connects text
Part management controls 10 circuit interface of pin of chip U15, and the pin 3 of protection chip U13 connects drawing for file management control chip U15
5 circuit interface of pin of 11 circuit interface of foot, protection chip U13 connects 3.3V power supply.
2. according to claim 1 a kind of based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, feature exists
In：The AD converter (4) is 16 a kind of, 6 Channel Synchronous sampling modulus data acquisition system AD7606.
3. according to claim 1 a kind of based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, feature exists
In：The model dsPIC33FJ256MC710 of the processor (1).
4. according to claim 1 a kind of based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, feature exists
In：The touch liquid crystal (7) is a kind of 8.0 inch of 800 × 600 graphic dot matrix K600+ kernel 65K color DGUS screen.
5. according to claim 1 a kind of based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, feature exists
In：The thermal printer (8) uses serial ports Transistor-Transistor Logic level.
6. according to claim 1 a kind of based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields, feature exists
In：The model of the model TF2-12V of the relay J1, the model OP07 of operational amplifier Um14, operational amplifier Um2
For AD8253, control the model 24LC64SC of chip U3, the model 24C512 of storage chip U8, temperature acquisition sensing chip
The model of the model MCP9801SN of U7, the model CH376 of file management control chip U15, protection chip U13
CH412A。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029597.7A CN108918981A (en) | 2018-09-05 | 2018-09-05 | One kind being based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029597.7A CN108918981A (en) | 2018-09-05 | 2018-09-05 | One kind being based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918981A true CN108918981A (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811029597.7A Pending CN108918981A (en) | 2018-09-05 | 2018-09-05 | One kind being based on the micro- inductance comprehensive tester of ± 500kV converter station DC fields |
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| Country | Link |
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| CN (1) | CN108918981A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2479888A1 (en) * | 2011-01-21 | 2012-07-25 | Huawei Device Co., Ltd. | Power supply circuit of power amplifier, and terminal |
| CN203894325U (en) * | 2014-04-01 | 2014-10-22 | 淮安科达电气有限公司 | Direct current resistance tester |
| CN203894334U (en) * | 2014-03-29 | 2014-10-22 | 淮安科达电气有限公司 | Automatic capacitance and inductance tester |
-
2018
- 2018-09-05 CN CN201811029597.7A patent/CN108918981A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2479888A1 (en) * | 2011-01-21 | 2012-07-25 | Huawei Device Co., Ltd. | Power supply circuit of power amplifier, and terminal |
| CN203894334U (en) * | 2014-03-29 | 2014-10-22 | 淮安科达电气有限公司 | Automatic capacitance and inductance tester |
| CN203894325U (en) * | 2014-04-01 | 2014-10-22 | 淮安科达电气有限公司 | Direct current resistance tester |
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Application publication date: 20181130 |
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