CN206248818U - A kind of DC voltage transformer frequency response detection means - Google Patents
A kind of DC voltage transformer frequency response detection means Download PDFInfo
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- CN206248818U CN206248818U CN201621373266.1U CN201621373266U CN206248818U CN 206248818 U CN206248818 U CN 206248818U CN 201621373266 U CN201621373266 U CN 201621373266U CN 206248818 U CN206248818 U CN 206248818U
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Abstract
The utility model provides a kind of DC voltage transformer frequency response detection means, the device includes normal voltage Acquisition Circuit, by school voltage collection circuit, waveform generating circuit, Waveform Matching circuit, frequency response detects circuit and clock synchronization circuit, normal voltage Acquisition Circuit gathers the output voltage of standard mainstream low voltage divider, the output voltage of stream voltage transformer is aligned by the collection of school voltage collection circuit simultaneously, waveform generating circuit and frequency response detection circuit receive the time signal of clock synchronization circuit transmission, for make collection by school voltage and with this by school voltage simultaneously gather normal voltage it is corresponding, then respectively obtain by the error of the frequency response of school voltage, and by the waveform of the matching of school voltage and normal voltage.Staff can fully understand the frequency response characteristic for being aligned stream voltage transformer by waveform and frequency response error.
Description
Technical field
The utility model is related to the technical field that transformer is detected, more particularly to a kind of DC voltage transformer frequency response
Detection means.
Background technology
Compared with alternating current, the high-power super-pressure long distance power transmission of direct current transportation, cable power transmission and non-synchronous networking
Etc. aspect there are more advantages, DC voltage transformer as line voltage measurement apparatus, being must in direct current transportation
Few equipment.DC voltage transformer is generally divided into electronic direct-current voltage transformer and all -fiber based on electric resistance partial pressure principle
Formula DC voltage transformer.
DC voltage transformer is typically mounted at HVDC polar curve in current conversion station, neutral bus and ground electrode circuit
Place, it controls the secondary access signal with protection as straight-flow system.After DC voltage transformer is installed at the scene, general pin
Its DC voltage measurement degree of accuracy is tested, but, the detection research to DC voltage transformer frequency response is not still deep
Enter.
Utility model content
The utility model purpose is to provide a kind of DC voltage transformer frequency response detection means, to detect direct current
Press the frequency response of transformer.
A kind of DC voltage transformer frequency response detection means includes：Normal voltage Acquisition Circuit, by school voltage acquisition
Circuit, waveform generating circuit, Waveform Matching circuit, frequency response detection circuit and clock synchronization circuit；
The input of the waveform generating circuit is respectively with the output end of the normal voltage Acquisition Circuit and by school voltage
The output end connection of Acquisition Circuit；
The input of the frequency response detection circuit is respectively with the output end of the normal voltage Acquisition Circuit and by school
The output end connection of voltage collection circuit；
The output end of the waveform generating circuit is electrically connected with the input of the Waveform Matching circuit；
The clock synchronization circuit respectively with the normal voltage Acquisition Circuit, by school voltage collection circuit, frequency response
Detection circuit and waveform generating circuit connection.
Further, the frequency response detection circuit includes that voltage magnitude detects circuit and voltage-phase detection circuit；
The voltage magnitude detection circuit is connected with the normal voltage Acquisition Circuit and by school voltage collection circuit respectively；
The voltage-phase detection circuit is connected with the normal voltage Acquisition Circuit and by school voltage collection circuit respectively.
Further, the normal voltage Acquisition Circuit includes that voltage sensor and the A/D being connected with voltage sensor turn
Parallel operation.
Further, the DC voltage frequency response detection means also include display, the display respectively with waveform
Match circuit and frequency response detection circuit connection.
Further, described is digital signal acquiring circuit by school voltage collection circuit.
Further, the voltage sensor is wideband voltage sensor.
From above technical scheme, the utility model provides a kind of DC voltage transformer frequency response detection means,
The device includes normal voltage Acquisition Circuit, is rung by school voltage collection circuit, waveform generating circuit, Waveform Matching circuit, frequency
Circuit and clock synchronization circuit should be detected, normal voltage Acquisition Circuit is connected with standard DC voltage divider, to gather standard
The normal voltage of the output of DC voltage divider, is connected, with stream voltage transformer is aligned by school voltage collection circuit to adopt
Collection be aligned stream voltage transformer output by school voltage, normal voltage Acquisition Circuit and by school voltage collection circuit receive clock
The time signal that synchronous circuit sends.Normal voltage Acquisition Circuit gathers normal voltage, while being gathered by school voltage collection circuit
By school voltage, waveform generating circuit and frequency response detection circuit receive the time signal that clock synchronization circuit sends, and are used for
Make being matched by the normal voltage that school voltage is gathered simultaneously by school voltage and with this for collection, respectively obtain by the frequency of school voltage
The error of response, and by the waveform of the matching of school voltage and normal voltage.Staff passes through waveform and frequency response error
The frequency response characteristic for being aligned stream voltage transformer can be fully understanded.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
A kind of circuit of DC voltage transformer frequency response detection means that Fig. 1 is provided for the utility model embodiment is former
Reason figure；
Fig. 2 detects the circuit theory diagrams of circuit for the frequency response of Fig. 1；
Fig. 3 is the circuit theory diagrams of the normal voltage Acquisition Circuit of Fig. 1.
Wherein, 101- normal voltages Acquisition Circuit, 102- is by school voltage collection circuit, 103- clock synchronization circuits, 104-
Frequency response detects circuit, 105- waveform generating circuits, 106- Waveform Matching circuits, 107- displays, the inspection of 201- voltage magnitudes
Slowdown monitoring circuit, 202- voltage-phases detection circuit, 301- voltage sensors, 302-A/D transformers.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clear, complete description, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
The utility model provides a kind of DC voltage transformer frequency response detection means to be included：Normal voltage Acquisition Circuit
101st, by school voltage collection circuit 102, waveform generating circuit 105, Waveform Matching circuit 106, frequency response detection circuit 104 and
Clock synchronization circuit 103；
The input of the waveform generating circuit 105 respectively with the output end and quilt of the normal voltage Acquisition Circuit 101
The output end connection of school voltage collection circuit 102；
The input of frequency response detection circuit 104 respectively with the output end of the normal voltage Acquisition Circuit 101
Connected with by the output end of school voltage collection circuit 102；
The output end of the waveform generating circuit 105 is electrically connected with the input of the Waveform Matching circuit 106；
The clock synchronization circuit 103 respectively with the normal voltage Acquisition Circuit 101, by school voltage collection circuit 102,
Frequency response detects that circuit 104 and waveform generating circuit 105 are connected.
Waveform generating circuit can use matched filter using bandpass filter, resolution filter, Waveform Matching circuit
Constituted with processor, bandpass filter can be filtered by normal voltage and by school voltage, then be decomposed through resolution filter,
Then sending into processor by the signal after matched filter treatment carries out data processing.
From above technical scheme, the utility model provides a kind of DC voltage transformer frequency response detection means,
The device is including normal voltage Acquisition Circuit 101, by school voltage collection circuit 102, waveform generating circuit 105, Waveform Matching electricity
Detect circuit 104 and clock synchronization circuit 103, normal voltage Acquisition Circuit 101 and standard DC voltage in road 106, frequency response
Divider is connected, to gather the normal voltage of the output of standard DC voltage divider, by school voltage collection circuit 102 and by school
DC voltage transformer connect, with gather be aligned stream voltage transformer export by school voltage, normal voltage Acquisition Circuit 101
The time signal that clock synchronization circuit 103 sends is received with by school voltage collection circuit 102.Normal voltage Acquisition Circuit 101 is adopted
Collection normal voltage, while being gathered by school voltage by school voltage collection circuit 102, waveform generating circuit 105 and frequency response are detected
Circuit receives the time signal of the transmission of clock synchronization circuit 103, for making the by school voltage and same by school voltage with this of collection
When the normal voltage that gathers it is corresponding, then respectively obtain by the error of the frequency response of school voltage, and by school voltage and mark
The waveform of the matching of quasi- voltage.Staff can fully understand and be aligned stream voltage transformer by waveform and frequency response error
Frequency response characteristic.
Further, the frequency response detection circuit 104 includes that voltage magnitude detects circuit 201 and voltage-phase detection electricity
Road 202；
The voltage magnitude detection circuit 201 is respectively with the normal voltage Acquisition Circuit 101 and by school voltage acquisition electricity
Road 102 connects；
The voltage-phase detection circuit 202 is respectively with the normal voltage Acquisition Circuit 101 and by school voltage acquisition electricity
Road 102 connects.
The detection of DC voltage transformer frequency response includes the detection of voltage magnitude and the detection of voltage-phase, voltage amplitude
Amplitude and the amplitude by school voltage that the detection of value passes through examination criteria voltage, obtain by the amplitude error of school voltage；Voltage phase
Phase and the phase by school voltage that position detection circuit 202 passes through examination criteria voltage, obtain by the phase error of school voltage.Work
Make amplitude error and phase error by school voltage that personnel pass through to obtain, understanding is aligned the frequency response of stream voltage transformer
Characteristic.
Further, the normal voltage Acquisition Circuit 101 includes voltage sensor 301 and is connected with voltage sensor 301
The A/D converter 302 for connecing.
Because the output voltage signal of standard divider is usually analog voltage signal, in order to output voltage signal
Detection and analysis, so the output voltage signal of standard divider need to be converted to data signal by A/D converter 302.
Further, analog voltage signal can be converted to small voltage signal by voltage sensor 3017, it is ensured that normal voltage partial pressure
The accuracy of the voltage signal of device.
Further, the DC voltage frequency response detection means also includes display 107, and the display 107 is distinguished
It is connected with Waveform Matching circuit 106 and frequency response detection circuit 104.
Display 107 can show normal voltage and by the waveform after the matching of school voltage, and by the frequency of school voltage
The error amount of response, makes staff get more information about the frequency response characteristic for being aligned stream voltage transformer.
Further, described is digital signal acquiring circuit by school voltage collection circuit 102.
The output voltage signal of DC voltage transformer is usually data signal, therefore is by school voltage collection circuit 102
Digital signal acquiring circuit.
Further, the voltage sensor 301 is wideband voltage sensor.
Because the output voltage of standard DC voltage divider has frequency range wider, therefore use wideband voltage sensor
Device 301 can gather the complete frequency range of standard DC voltage divider, make testing result more accurate.
From above technical scheme, the utility model provides a kind of DC voltage transformer frequency response detection means,
The device includes normal voltage Acquisition Circuit 101, is examined by school voltage collection circuit 102, waveform generating circuit 105, frequency response
Slowdown monitoring circuit 104 and clock synchronization circuit 103, normal voltage Acquisition Circuit 101 are connected with standard DC voltage divider, to gather
The normal voltage of the output of standard DC voltage divider, is connected by school voltage collection circuit 102 with stream voltage transformer is aligned
Connect, the by school voltage, normal voltage Acquisition Circuit 101 and electric by school voltage acquisition of stream voltage transformer output is aligned to gather
Road 102 receives the time signal that clock synchronization circuit 103 sends.Normal voltage Acquisition Circuit 101 gathers normal voltage, while quilt
School voltage collection circuit 102 is gathered by school voltage, and waveform generating circuit 105 and frequency response detection circuit receive clock synchronization
Circuit 103 send time signal, for make collection by school voltage and with this by school voltage simultaneously gather normal voltage phase
Correspondence, then respectively obtains by the error of the frequency response of school voltage, and by the waveform of the matching of school voltage and normal voltage.
Staff can fully understand the frequency response characteristic for being aligned stream voltage transformer by waveform and frequency response error.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice utility model disclosed herein
Other new embodiments.The application is intended to any modification of the present utility model, purposes or adaptations, these
Modification, purposes or adaptations follow general principle of the present utility model and including undocumented skill of the utility model
Common knowledge or conventional techniques in art field.Description and embodiments be considered only as it is exemplary, it is of the present utility model
True scope and spirit are pointed out by following claim.
It should be appreciated that the utility model is not limited to the accurate knot for being described above and being shown in the drawings
Structure, and can without departing from the scope carry out various modifications and changes.Scope of the present utility model only will by appended right
Ask to limit.
Claims (6)
1. a kind of DC voltage transformer frequency response detection means, it is characterised in that the DC voltage transformer frequency is rung
Answering detection means includes：Normal voltage Acquisition Circuit (101), by school voltage collection circuit (102), waveform generating circuit (105),
Waveform Matching circuit (106), frequency response detect circuit (104) and clock synchronization circuit (103)；
The input of the waveform generating circuit (105) respectively with the output end and quilt of the normal voltage Acquisition Circuit (101)
The output end connection of school voltage collection circuit (102)；
The input of frequency response detection circuit (104) respectively with the output end of the normal voltage Acquisition Circuit (101)
Connected with by the output end of school voltage collection circuit (102)；
The output end of the waveform generating circuit (105) is electrically connected with the input of the Waveform Matching circuit (106)；
The clock synchronization circuit (103) respectively with the normal voltage Acquisition Circuit (101), by school voltage collection circuit
(102), frequency response detects circuit (104) and waveform generating circuit (105) connection.
2. DC voltage transformer frequency response detection means according to claim 1, it is characterised in that the frequency is rung
Should detect that circuit (104) detects that circuit (201) and voltage-phase detect circuit (202) including voltage magnitude；
The voltage magnitude detects circuit (201) respectively with the normal voltage Acquisition Circuit (101) and by school voltage acquisition electricity
Road (102) connects；
The voltage-phase detects circuit (202) respectively with the normal voltage Acquisition Circuit (101) and by school voltage acquisition electricity
Road (102) connects.
3. DC voltage transformer frequency response detection means according to claim 1, it is characterised in that the standard electric
The A/D converter (302) that pressure Acquisition Circuit (101) is connected including voltage sensor (301) and with voltage sensor (301).
4. DC voltage transformer frequency response detection means according to claim 3, it is characterised in that the direct current
Voltage-frequency rate response detection device also include display (107), the display (107) respectively with Waveform Matching circuit (105) and
Frequency response detects circuit (104) connection.
5. DC voltage transformer frequency response detection means according to claim 4, it is characterised in that described by school electricity
Pressure Acquisition Circuit (102) is digital signal acquiring circuit.
6. DC voltage transformer frequency response detection means according to claim 5, it is characterised in that the voltage is passed
Sensor (301) is wideband voltage sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373266.1U CN206248818U (en) | 2016-12-14 | 2016-12-14 | A kind of DC voltage transformer frequency response detection means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621373266.1U CN206248818U (en) | 2016-12-14 | 2016-12-14 | A kind of DC voltage transformer frequency response detection means |
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| CN206248818U true CN206248818U (en) | 2017-06-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813951A (en) * | 2018-12-26 | 2019-05-28 | 中国科学院上海应用物理研究所 | A kind of current sensor frequency response bandwidth measuring apparatus and method |
-
2016
- 2016-12-14 CN CN201621373266.1U patent/CN206248818U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813951A (en) * | 2018-12-26 | 2019-05-28 | 中国科学院上海应用物理研究所 | A kind of current sensor frequency response bandwidth measuring apparatus and method |
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