CN206248719U - A kind of high-pressure side DC voltage sampling module of electric power electric transformer - Google Patents
A kind of high-pressure side DC voltage sampling module of electric power electric transformer Download PDFInfo
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- CN206248719U CN206248719U CN201621191568.7U CN201621191568U CN206248719U CN 206248719 U CN206248719 U CN 206248719U CN 201621191568 U CN201621191568 U CN 201621191568U CN 206248719 U CN206248719 U CN 206248719U
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- voltage
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Abstract
The utility model discloses a kind of high-pressure side DC voltage sampling module of electric power electric transformer, belong to and be transported to electrical domain, mainly it is made up of high-pressure side potential measurement unit, multimode fibre, low pressure current potential signal processing unit, data/address bus etc., can be by the high-voltage dc voltage of input by by Fiber isolation and being sent to after low pressure current potential signal processing unit carries out signals revivification and analog/digital conversion feeding data/address bus and being used in order to control system after step-down, voltage/frequency conversion and electrical/optical conversion.
Description
Technical field
The utility model belongs to is transported to electrical domain, is related to a kind of power monitoring equipment, and more particularly to a kind of power electronics becomes
The high-pressure side DC voltage sampling module of depressor.
Background technology
Electric power electric transformer is progressively grow up recently as the development of high-power electric and electronic technology new
Type power transformer, it may be used also on the basis of the basic functions such as traditional power transformer transformation, isolation and transmission energy are realized
To realize Fault Isolation, utility power quality control, distributed DC power access etc..In order to more preferably realize power electronics transformation
The control of device, the parameters in collection electric power electric transformer become the essential link in control, it is therefore necessary to
Design the high-pressure side DC voltage of good a kind of high precision, isolation effect, fast response time, the electric power electric transformer of safety and stability
Sample circuit.
Utility model content
To solve the above problems, the utility model provides a kind of high-pressure side DC voltage sampling of electric power electric transformer
Circuit.
The utility model solves its technical problem and takes following technical scheme to realize：
A kind of high-pressure side DC voltage sampling module of electric power electric transformer, including it is high-pressure side potential measurement unit, low
Piezoelectric position signal processing unit, it is characterised in that：
The high-pressure side potential measurement unit is connected by multimode fibre with the low pressure current potential signal processing unit, institute
Low pressure current potential signal processing unit is stated to be connected with control system by data/address bus；
The high-pressure side potential measurement unit is main to be changed by voltage dividing resistance circuit, voltage/frequency change-over circuit, electrical/optical
Circuit is constituted, and for the high-voltage dc voltage being input into be depressured through the voltage dividing resistance circuit, then is changed through the voltage/frequency
Circuit conversion is into the frequency electric impulse signal proportional to high-voltage dc voltage average value, then is converted into by electrical/optical change-over circuit
Light pulse signal, the low pressure current potential signal processing unit is sent to finally by the multimode fibre；
The low pressure current potential signal processing unit is main by optical electrical change-over circuit, frequency/voltage change-over circuit, simulation/number
Word change-over circuit is constituted, for the light pulse signal that multimode fibre transmission comes to be converted into through the optical electrical change-over circuit
Electric signal, then voltage signal is reduced into through the frequency/voltage change-over circuit, then entered by the A/D conversion circuit
The data/address bus is sent into after row conversion；
The voltage/frequency change-over circuit is mainly made up of LM331.
The utility model employs the circuits such as voltage/frequency change-over circuit, A/D conversion circuit, multimode fibre, greatly
Big precision, reliability and the security that improve system.
Brief description of the drawings
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Generally described in accompanying drawing herein and
The detailed description of the embodiment of the present utility model for showing is not intended to limit claimed scope of the present utility model, but
It is merely representative of selected embodiment of the present utility model.Based on the embodiment in the utility model, those of ordinary skill in the art exist
The every other embodiment obtained under the premise of creative work is not made, the scope of the utility model protection is belonged to.
Fig. 1 is the utility model structural framing schematic diagram.
Specific embodiment
The utility model is implemented below in conjunction with accompanying drawing be further described, following examples are descriptive, are not
Limited, it is impossible to protection domain of the present utility model is limited with this.
As shown in figure 1, a kind of high-pressure side DC voltage sampling module of electric power electric transformer, including high-pressure side current potential is surveyed
Amount unit, multimode fibre, low pressure current potential signal processing unit, data/address bus, high-pressure side potential measurement unit are main by partial pressure electricity
Resistance circuit, voltage/frequency change-over circuit, electrical/optical change-over circuit composition；Low pressure current potential signal processing unit is main to be turned by optical electrical
Change circuit, frequency/voltage change-over circuit, A/D conversion circuit composition.
Operation principle
The voltage U of the output of high-pressure side concatenation unit 1dciBy the voltage dividing resistance circuit 20 of high-pressure side potential measurement unit 2
After being depressured, then frequency and DC voltage average value U are converted into through voltage/frequency change-over circuit 21dciProportional electricity
Pulse signal, and after being converted into light pulse signal by electrical/optical change-over circuit 22, low pressure current potential is sent to by multimode fibre 3 and is believed
The optical electrical change-over circuit 40 of number processing unit 4 is converted into electric impulse signal, then is reduced into electricity through frequency/voltage change-over circuit 41
Pressure signal, the voltage signal sends electric power electricity to after carrying out analog-to-digital conversion by A/D conversion circuit 42 by data/address bus 5
Sub- transformer control system 6, for realizing corresponding calculating and control.Voltage frequency conversioning circuit is using LM331 as core
Element.
The utility model employs the circuits such as voltage/frequency change-over circuit, A/D conversion circuit, multimode fibre, greatly
Big precision, reliability and the security that improve system.
Claims (1)
1. the high-pressure side DC voltage sampling module of a kind of electric power electric transformer, including high-pressure side potential measurement unit, low pressure
Electric potential signal processing unit, it is characterised in that：
The high-pressure side potential measurement unit is connected by multimode fibre with the low pressure current potential signal processing unit, described low
Piezoelectric position signal processing unit is connected by data/address bus with control system；
The high-pressure side potential measurement unit is main by voltage dividing resistance circuit, voltage/frequency change-over circuit, electrical/optical change-over circuit
Composition, for the high-voltage dc voltage being input into be depressured through the voltage dividing resistance circuit, then through the voltage/frequency change-over circuit
The frequency electric impulse signal proportional to high-voltage dc voltage average value is converted into, then light arteries and veins is converted into by electrical/optical change-over circuit
Signal is rushed, the low pressure current potential signal processing unit is sent to finally by the multimode fibre；
The low pressure current potential signal processing unit is main to be turned by optical electrical change-over circuit, frequency/voltage change-over circuit, analog/digital
Circuit composition is changed, for the light pulse signal that multimode fibre transmission comes to be converted into telecommunications through the optical electrical change-over circuit
Number, then voltage signal is reduced into through the frequency/voltage change-over circuit, then turned by the A/D conversion circuit
The data/address bus is sent into after changing；
The voltage/frequency change-over circuit is mainly made up of LM331.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621191568.7U CN206248719U (en) | 2016-10-31 | 2016-10-31 | A kind of high-pressure side DC voltage sampling module of electric power electric transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621191568.7U CN206248719U (en) | 2016-10-31 | 2016-10-31 | A kind of high-pressure side DC voltage sampling module of electric power electric transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206248719U true CN206248719U (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621191568.7U Active CN206248719U (en) | 2016-10-31 | 2016-10-31 | A kind of high-pressure side DC voltage sampling module of electric power electric transformer |
Country Status (1)
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| CN (1) | CN206248719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353582A (en) * | 2016-10-31 | 2017-01-25 | 广西电网有限责任公司电力科学研究院 | High-voltage side direct current voltage sampling module for power electronic transformer of power distribution network |
-
2016
- 2016-10-31 CN CN201621191568.7U patent/CN206248719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353582A (en) * | 2016-10-31 | 2017-01-25 | 广西电网有限责任公司电力科学研究院 | High-voltage side direct current voltage sampling module for power electronic transformer of power distribution network |
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