CN206892259U - A kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms - Google Patents
A kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms Download PDFInfo
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- CN206892259U CN206892259U CN201720763746.7U CN201720763746U CN206892259U CN 206892259 U CN206892259 U CN 206892259U CN 201720763746 U CN201720763746 U CN 201720763746U CN 206892259 U CN206892259 U CN 206892259U
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- partial discharge
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Abstract
The utility model overcomes the deficiency of existing instrument for measuring partial discharge, there is provided a kind of new instrument for measuring partial discharge's apparatus for correcting based on PC platforms.The utility model includes control terminal, microcomputer development plate and transmission circuit.The utility model is simple in construction, simple and efficient to handle, is applicable to a variety of environment, has good booster action to local discharge test to electrical equipment.
Description
Technical field
Electrical equipment testing equipment field is the utility model is related to, is detected more particularly, to a kind of electrical equipment equipment
Apparatus for correcting.
Background technology
The new high voltage electric equipment for designing and manufacturing, the weak ring in insulation can be found in time by measurement of partial discharge
Section, prevent design and the mistake in manufacturing process and the improper use of material.Shelf depreciation test is to differentiate product insulation or set
A kind of important method of standby operational reliability.It can find the equipment deficiency that pressure test can not be found.Shelf depreciation is tested
One of big event of current power equipment preventive trial.
In shelf depreciation test, the shelf depreciation collected is high-frequency signal.Shelf depreciation is tested typically with voltage
Or the form of electricity represents.Which kind of but no matter represented with unit, the front end acquisition module of instrument for measuring partial discharge is all
Voltage has been converted the signal into, the signal transacting of tester could be facilitated.But because shelf depreciation waveform itself is irregular,
And decay in transmitting procedure be present.The also factor such as the system interference and error of signal after instrument for measuring partial discharge is entered
The partial discharge quantity that instrument for measuring partial discharge finally shows and the partial discharge quantity that cable actually occurs is caused to have larger difference.
Therefore instrument for measuring partial discharge correct significant.
Utility model content
The utility model overcomes the technical deficiency of above-mentioned existing instrument for measuring partial discharge, there is provided it is a kind of it is new based on
Instrument for measuring partial discharge's apparatus for correcting of PC platforms, correction can be made to instrument for measuring partial discharge.The utility model is simple in construction,
It is simple and efficient to handle, it is applicable to a variety of environment.
In order to solve the above technical problems, the technical solution of the utility model is as follows：
A kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms, including control terminal, microcomputer development plate and biography
Transmission of electricity road, its annexation are as follows：
The output end of control terminal is connected with the input of microcomputer development plate；
The output end of microcomputer development plate also electrically connects with transmission circuit.
Utility model works process is as follows：
The parameter of terminal control microcomputer development plate is controlled, when adjusting output voltage values and the discharge and recharge of microcomputer development plate
Between.The output voltage of microcomputer development plate is boosted by transmission circuit, turns into known correcting signal.Correcting signal is passed
Instrument for measuring partial discharge is defeated by, by the way that correcting signal and instrument for measuring partial discharge are carried out pair to the measured value of correcting signal
Than obtaining proportionality coefficient.So as to complete the one-shot measurement correction to instrument for measuring partial discharge.
In a kind of preferable scheme, entered between described PC computers and microcomputer development plate by way of WIFI transmission
Row connection.In correcting process, due to consideration that the transmission attenuation of shelf depreciation, it is thus possible to exist apparatus for correcting position and
The situation of the position standoff distance of instrument for measuring partial discharge farther out.
In a kind of preferable scheme, entered between described PC computers and microcomputer development plate by way of network cable transmission
Row connection.This transmission means is adapted to the position of apparatus for correcting and the nearer feelings of position standoff distance of instrument for measuring partial discharge
Condition.
In a kind of preferable scheme, described microcomputer development plate includes cable interface, WIFI transmitting devices, UART and connect
Mouth and single-chip microcomputer, its annexation are as follows：
Input of the input of WIFI transmitting devices as microcomputer development plate, the output end of WIFI transmitting devices with
The input electrical connection of UART interface；
The output end of UART interface and monolithic mechatronics；
Input of the input of cable interface as microcomputer development plate, output end and the single-chip microcomputer of cable interface are electrically connected
Connect.
In a kind of preferable scheme, described single-chip microcomputer includes D/A module, and D/A module is defeated as microcomputer development plate
Go out end, the output end of D/A module electrically connects with the input of transmission circuit.
In a kind of preferable scheme, instrument for measuring partial discharge's apparatus for correcting according to claim 1, its feature exists
In, described transmission circuit includes DC-DC devices, first resistor, second resistance, the first relay, the second relay and electric capacity,
Its annexation is as follows：
DC-DC devices have input, cathode output end and cathode output end, and first resistor has first end and the second end, the
Two resistance have first end and the second end, and the first relay includes first end, the second end and control terminal, and the second relay has first
End, the second end and control terminal, electric capacity have first end and the second end；
Input of the input of DC-DC devices as transmission circuit, the input of DC-DC devices is as transmission circuit
Input electrically connects with the output end of D/A module；
The cathode output end of DC-DC devices electrically connects with the first end of first resistor；
Second end of first resistor electrically connects with the first end of the first relay；
Second end of the first relay electrically connects with the first end of electric capacity；
The control terminal of first relay electrically connects with microcomputer development plate；
First end of the first end of electric capacity also with the second relay electrically connects；
Second end of the second relay electrically connects with the first end of second resistance；
The control terminal of second relay electrically connects with microcomputer development plate；
Second end of second resistance electrically connects with the second end of electric capacity；
Second end of electric capacity also electrically connects with DC-DC device cathode output ends.
In a kind of preferable scheme, the first described relay adjusts the shape of closure/disconnection by microcomputer development plate
State.
In a kind of preferable scheme, the second described relay adjusts the shape of cut-off/close by microcomputer development plate
State.
The utility model principle is as follows：
Input impedance of the second resistance as instrument for measuring partial discharge, electric capacity are used for storing electricity, and DC-DC devices provide electricity
U is pressed, the first relay is as normal closing relay, and the second relay is as normal off open relay.Therefore electric capacity can be calculated
The electricity stored is Q=U*C (C is the capacity of electric capacity).Electric capacity will be discharged by second resistance after the first relay closes.
Therefore electric capacity works as repid discharge, could approx be used as local discharge signal.And when electric capacity discharges, the first relay is normally closed will
Disconnect, stop charging.
The interval of discharge and recharge is determined by single-chip microcomputer by the relay of Control first and the second relay.And charge
The size of magnitude of voltage is also determined by the D/A module of single-chip microcomputer.Single-chip microcomputer sends 0~3V d. c. voltage signal by D/A module,
Then boosted by DC-DC devices, form 0~100V DC voltage.There is proportionality coefficient in DC-DC devices, this is compared
In example coefficient deposit single-chip microcomputer, can passing ratio relation adjust the output of the D/A module of single-chip microcomputer.And 0~100V voltage
The then signal source as apparatus for correcting, realize the adjustable function of signal amplitude.
Compared with prior art, the beneficial effect of technical solutions of the utility model is：The utility model provides a kind of new
Instrument for measuring partial discharge's apparatus for correcting based on PC platforms, correction can be made to instrument for measuring partial discharge.The utility model knot
Structure is simple, simple and efficient to handle, is applicable to a variety of environment.There is auxiliary work well to local discharge test to electrical equipment
With.
Brief description of the drawings
Fig. 1 is the utility model structural circuit figure.
Label declaration：1. first resistor, 2. first relays, 3. electric capacity, 4. second relays, 5. second resistances.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
In order to more preferably illustrate the present embodiment, some parts of accompanying drawing have omission, zoomed in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be appreciated that some known features and its explanation, which may be omitted, in accompanying drawing
's.
The technical solution of the utility model is described further with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms, including PC computers, single-chip microcomputer are opened
Plate and transmission circuit are sent out, is connected between PC computers and microcomputer development plate by way of WIFI transmission or network cable transmission
Connect.
Microcomputer development plate includes cable interface, WIFI transmitting devices, UART interface and single-chip microcomputer, and its annexation is such as
Under：
The output end of WIFI transmitting devices electrically connects with the input of UART interface；
The output end of UART interface and monolithic mechatronics；
The output end of cable interface and monolithic mechatronics.
Single-chip microcomputer includes D/A module, and transmission circuit includes DC-DC devices, first resistor 1, second resistance 5, the first relay
2nd, the second relay 4 and electric capacity 3, its annexation are as follows：
DC-DC devices have input, cathode output end and cathode output end, and first resistor 1 has first end and the second end, the
Two resistance 5 have first end and the second end, and the first relay includes first end, the second end and control terminal, and the second relay has first
End, the second end and control terminal, electric capacity 3 have first end and the second end；
Input of the input of DC-DC devices as transmission circuit, the input of DC-DC devices and the output of D/A module
End electrical connection
The cathode output end of DC-DC devices electrically connects with the first end of first resistor 1；
Second end of first resistor 1 electrically connects with the first end of the first relay 2；
Second end of the first relay 2 electrically connects with the first end of electric capacity 3；
The control terminal of first relay 2 electrically connects with microcomputer development plate；
First end of the first end of electric capacity 3 also with the second relay 4 electrically connects；
Second end of the second relay 4 electrically connects with the first end of second resistance 5；
The control terminal of second relay 4 electrically connects with microcomputer development plate；
Second end of second resistance 5 electrically connects with the second end of electric capacity 3；
Second end of electric capacity 3 also electrically connects with DC-DC device cathode output ends.
First relay adjusts the state of cut-off/close by single-chip microcomputer.
Second relay adjusts the state of cut-off/close by single-chip microcomputer.
The present embodiment course of work is as follows：
PC transmits discharge and recharge time and D/A module output voltage values defeated to microcomputer development plate, the adjustment of microcomputer development plate
Go out magnitude of voltage and discharge and recharge time.The output voltage of microcomputer development plate is boosted by transmission circuit, is turned into known and is rectified
Positive signal.Correcting signal is transferred to instrument for measuring partial discharge, by the way that correcting signal and instrument for measuring partial discharge are believed correction
Number measured value contrasted, obtain proportionality coefficient.So as to complete the one-shot measurement correction to instrument for measuring partial discharge.
Term the being given for example only property explanation of position relationship described in accompanying drawing, it is impossible to be interpreted as the limitation to this patent；
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.All made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in
Within the protection domain of the utility model claims.
Claims (9)
1. a kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms, it is characterised in that opened including control terminal, single-chip microcomputer
Send out plate and transmission circuit, its annexation are as follows：
The output end of control terminal is connected with the input of microcomputer development plate；
The output end of microcomputer development plate also electrically connects with transmission circuit.
2. instrument for measuring partial discharge's apparatus for correcting according to claim 1, it is characterised in that described control terminal is PC
Computer.
3. instrument for measuring partial discharge's apparatus for correcting according to claim 2, it is characterised in that described PC computers and monolithic
It is attached between machine development board by way of WIFI transmission.
4. instrument for measuring partial discharge's apparatus for correcting according to claim 2, it is characterised in that described PC computers and monolithic
It is attached between machine development board by way of network cable transmission.
5. instrument for measuring partial discharge's apparatus for correcting according to any claim in Claims 1-4, it is characterised in that
Described microcomputer development plate includes cable interface, WIFI transmitting devices, UART interface and single-chip microcomputer, and its annexation is as follows：
Input of the input of WIFI transmitting devices as microcomputer development plate, output end and the UART of WIFI transmitting devices connect
The input electrical connection of mouth；
The output end of UART interface and monolithic mechatronics；
Input of the input of cable interface as microcomputer development plate, output end and the monolithic mechatronics of cable interface.
6. instrument for measuring partial discharge's apparatus for correcting according to claim 5, it is characterised in that described single-chip microcomputer includes DA
Module, the output end of the output end of D/A module as microcomputer development plate, the output end of D/A module and the input of transmission circuit
Electrical connection.
7. instrument for measuring partial discharge's apparatus for correcting according to claim 1, it is characterised in that described transmission circuit includes
DC-DC devices, first resistor, second resistance, the first relay, the second relay and electric capacity, its annexation are as follows：
DC-DC devices have input, cathode output end and cathode output end, and first resistor has first end and the second end, the second electricity
Resistance has a first end and the second end, and the first relay includes first end, the second end and control terminal, and the second relay has first end, the
Two ends and control terminal, electric capacity have first end and the second end；
Input of the input of DC-DC devices as transmission circuit, the input of the inputs of DC-DC devices as transmission circuit
End electrically connects with the output end of D/A module；
The cathode output end of DC-DC devices electrically connects with the first end of first resistor；
Second end of first resistor electrically connects with the first end of the first relay；
Second end of the first relay electrically connects with the first end of electric capacity；
The control terminal of first relay electrically connects with microcomputer development plate；
First end of the first end of electric capacity also with the second relay electrically connects；
Second end of the second relay electrically connects with the first end of second resistance；
The control terminal of second relay electrically connects with microcomputer development plate；
Second end of second resistance electrically connects with the second end of electric capacity；
Second end of electric capacity also electrically connects with DC-DC device cathode output ends.
8. instrument for measuring partial discharge's apparatus for correcting according to claim 7, it is characterised in that the first described relay leads to
Cross the state of microcomputer development plate adjustment closure/disconnection.
9. instrument for measuring partial discharge's apparatus for correcting according to claim 7, it is characterised in that the second described relay leads to
Cross the state of microcomputer development plate adjustment cut-off/close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763746.7U CN206892259U (en) | 2017-06-27 | 2017-06-27 | A kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763746.7U CN206892259U (en) | 2017-06-27 | 2017-06-27 | A kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206892259U true CN206892259U (en) | 2018-01-16 |
Family
ID=61298422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720763746.7U Active CN206892259U (en) | 2017-06-27 | 2017-06-27 | A kind of instrument for measuring partial discharge's apparatus for correcting based on PC platforms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206892259U (en) |
-
2017
- 2017-06-27 CN CN201720763746.7U patent/CN206892259U/en active Active
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