CN105846543B - A kind of magnetic control transformer voltage control parameter acquisition and analysis device - Google Patents
A kind of magnetic control transformer voltage control parameter acquisition and analysis device Download PDFInfo
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Abstract
The invention discloses a kind of magnetic control transformer voltage control parameter acquisition and analysis device, including Hall sensor, data conditioning conversion module, master control acquisition module and data message timing module, the Hall sensor is connected with the magnetic control winding of magnetic control transformer；The data conditioning conversion module is connected with voltage transformer, current transformer and Hall sensor respectively；The input terminal of the master control acquisition module is connected with the data conditioning conversion module and data message timing module respectively, and the output end of the master control acquisition module is connected with the communication interface modules；The master control acquisition module is also associated with first buffering area and second buffering area.The magnetic control transformer voltage control parameter acquisition and analysis device of the present invention, can decision-making foundation be provided for the control device of magnetic control transformer in time, realize that the continuous voltage of high speed is adjusted, it can also be data message setting time mark by the timing module of data message, decision-making foundation is provided for macroscopical voltage control of power grid.
Description
Technical field
The present invention relates to a kind of magnetic control transformer voltage control parameter acquisition and analysis devices, belong to power engineering field, can
Manufacturing industry suitable for transformer, it can also be used to operation of power networks industry.
Background technology
In recent years, load type is more and more diversified in electric system, such as distributed solar energy power generation, wind power generation are newly
Type renewable power supply is added, and increases the unstability of electric system.Power grid is improved using transformer flux control technology
Voltage controlled level becomes a kind of new pressure regulation means, and digital technology is used to carry out the acquisition of magnetic control transformer electrical parameter and divide
Analysis becomes the prerequisite for accurately and fast carrying out voltage adjusting；In addition to this, the digital collection data of high speed can be power grid
Frequency analysis provide foundation.
Presently, there are defect be：
(1) all kinds of voltage-operated devices for transformer are mainly and are realized by changing the tap of transformer, and
The tap of transformer only has a small number of several grades, can not achieve and continuously adjusts；
(2) some existing reactive-load compensation equipments, such as capacitor group, pressure regulation means fix, and do not perceive and feed back
Function also cannot achieve and continuously adjust；
(3) and other equipment with continuous voltage regulating power be not be transformer necessary component.
Invention content
The purpose of the present invention is overcoming the deficiencies of existing technologies, a kind of magnetic control transformer voltage control parameter acquisition point is provided
Analysis apparatus is built in magnetic control transformer, can provide decision-making foundation in time for the control device of magnetic control transformer, realizes that high speed connects
Continuous voltage is adjusted, and can also is data message setting time mark by the timing module of data message, then be passed through communication
Interface module is uploaded to operation of power networks department, and decision-making foundation is provided for macroscopical voltage control of power grid.
Realizing the technical solution of above-mentioned purpose is：A kind of magnetic control transformer voltage control parameter acquisition and analysis device, it is external
Magnetic control winding, voltage transformer, current transformer and the communication interface modules of magnetic control transformer, the voltage transformer and electric current
Mutual inductor is separately positioned in the on high-tension side alternating current circuit of magnetic control transformer, and the acquisition and analysis device includes hall sensing
Device, data conditioning conversion module, master control acquisition module and data message timing module, wherein：
The Hall sensor is connected with the magnetic control winding of the magnetic control transformer；
The data conditioning conversion module is connected with voltage transformer, current transformer and Hall sensor respectively；
The input terminal of the master control acquisition module respectively with the data conditioning conversion module and data message timing module
It is connected, the output end of the master control acquisition module is connected with the communication interface modules；
The master control acquisition module is also associated with first buffering area and second buffering area；
The voltage transformer and current transformer detect the on high-tension side alternating voltage of magnetic control transformer correspondingly
Signal and ac current signal, and voltage signal and current signal are sent to the data conditioning correspondingly and become mold changing
Block；
The DC current signal of the magnetic control winding of the Hall sensor acquisition magnetic control transformer, and DC current signal
It is sent to the data conditioning conversion module；
The data conditioning conversion module receives ac voltage signal, ac current signal and DC current signal, will hand over
Stream voltage signal, ac current signal and DC current signal carry out the voltage signal for being converted into 0-3.3V respectively, and 0-
The voltage signal of 3.3V is sent to the master control acquisition module；
The voltage signal of 0-3.3V of the master control acquisition module acquisition from data conditioning conversion module, and by 0-3.3V
Voltage signal be stored in the first buffering area；
The voltage signal of the 0-3.3V of acquisition is carried out data filtering and data analysis, institute by the master control acquisition module successively
Master control acquisition module is stated by the result of calculation after completing data analysis there are in the second buffering area, and integrates clock mark shape
At data message, a plurality of data message is stored in the second buffering area, is called when to upload；
The data message timing module is used for the result of calculation after the completion data analysis to the master control acquisition module
In addition clock mark.
A kind of above-mentioned magnetic control transformer voltage control parameter acquisition and analysis device, the data conditioning conversion module include
Current and voltage signals converting unit, voltage magnitude converting unit, direct current amplitude converting unit, level shifting circuit and impedance transformation
Circuit, wherein：
The ac current signal is converted into the alternating voltage of one group of 3.3V by the current and voltage signals converting unit
Signal, the ac voltage signal are converted into the ac voltage signal of another group of 3.3V by the voltage magnitude converting unit,
The ac voltage signal of this two groups of 3.3V is converted into the voltage signal of 0-3.3V, the 0- by the level shifting circuit respectively
The voltage signal of 3.3V is transferred to the master control acquisition module by the impedance inverter circuit；
The DC current signal is converted into the voltage signal of 0-3.3V, the 0-3.3V by the stream amplitude converting unit
Voltage signal be transferred to the master control acquisition module by the impedance inverter circuit.
A kind of above-mentioned magnetic control transformer voltage control parameter acquisition and analysis device, wherein the master control acquisition module packet
Include A/D sample circuits, data register circuit, DSP governor circuits and data storage circuitry, the A/D sample circuits, data register
Circuit, DSP governor circuits and data storage circuitry are sequentially connected, and the A/D sample circuits are connected with the DSP governor circuits,
The A/D sample circuits receive the voltage signal of the 0-3.3V from the data conditioning conversion module.
Above-mentioned a kind of magnetic control transformer voltage control parameter acquisition and analysis device, wherein the master control acquisition module is adopted
With the dsp chip of model TMS320F2812.
A kind of above-mentioned magnetic control transformer voltage control parameter acquisition and analysis device, wherein the work master of the dsp chip
Frequency is 150MHz, and the sampling period is less than every 1 μ s, and sampling precision is 12.
A kind of above-mentioned magnetic control transformer voltage control parameter acquisition and analysis device, wherein the data message timing mould
Block uses the GPS clock chip of model ZYM-GA85-3 V2.1, the GPS clock chip and the DSP governor circuits phase
Even.
The magnetic control transformer voltage control parameter acquisition and analysis device of the present invention, compared with prior art, advantageous effect body
Now：
(1) needs that voltage is adjusted are directed to, a kind of method and solution that can be continuously adjusted is provided；
(2) collect electrical network parameter it is more comprehensive, have two sets of data of alternating current-direct current, for software Processing Algorithm provide effectively according to
According to；
(3) sampling period is less than every 1 μ S, and sampling precision is 12, and the data for preferably meeting magnetic control transformer are adopted
The requirement of collection and analysis；
(4) requirement of voltage adjusting, the foundation also provided for the frequency analysis of power grid can be not only provided；
(5) by clock mark, it can be analyzed for the synchronized phasor of power grid and data support is provided, provided for big data platform
Basic data.
Description of the drawings
Fig. 1 is the structure diagram of the magnetic control transformer voltage control parameter acquisition and analysis device of the present invention；
Fig. 2 is the block diagram of data conditioning conversion module；
Fig. 3 is the block diagram of master control acquisition module；
Fig. 4 is the block diagram of data message timing module.
Specific implementation mode
It is right below in conjunction with the accompanying drawings in order to make those skilled in the art be better understood when technical scheme of the present invention
Its specific implementation mode is described in detail：
It please refers to Fig.1 to Fig.4, highly preferred embodiment of the present invention, a kind of magnetic control transformer voltage control parameter collection analysis
Device, magnetic control winding 10, voltage transformer pt, Current Transmit and the communication interface modules 20 of external magnetic control transformer, electricity
Pressure mutual inductor PT and Current Transmit are separately positioned in the on high-tension side alternating current circuit of magnetic control transformer.
The magnetic control transformer voltage control parameter acquisition and analysis device of the present invention includes Hall sensor 4, data conditioning change
Change the mold block 1, master control acquisition module 2 and data message timing module 3.The magnetic control winding 10 of Hall sensor 4 and magnetic control transformer
It is connected；Data conditioning conversion module 1 is connected with voltage transformer pt, Current Transmit and Hall sensor 4 respectively；Master control is adopted
The input terminal of collection module 2 is connected with data conditioning conversion module 1 and data message timing module 3 respectively, master control acquisition module 2
Output end is connected with communication interface modules 20；Master control acquisition module 2 is also associated with first buffering area A and second buffering area B.
Voltage transformer pt and Current Transmit detect the on high-tension side alternating voltage of magnetic control transformer correspondingly
Signal and ac current signal, and voltage signal and current signal are sent to data conditioning conversion module 1 correspondingly；Suddenly
Your sensor 4 acquires the DC current signal of the magnetic control winding 10 of magnetic control transformer, and DC current signal is sent to data
Improve conversion module 1；Data conditioning conversion module 1 receives ac voltage signal, ac current signal and DC current signal, will
Ac voltage signal, ac current signal and DC current signal carry out the voltage signal for being converted into 0-3.3V respectively, and 0-
The voltage signal of 3.3V is sent to master control acquisition module 2；Master control acquisition module 2 acquires the 0- from data conditioning conversion module 1
The voltage signal of 3.3V, and the voltage signal of 0-3.3V is stored in first buffering area A；Master control acquisition module 2 is by acquisition
The voltage signal of 0-3.3V carries out data filtering and data analysis successively, and master control acquisition module 2 is by the meter after completing data analysis
Result is calculated there are in the second buffering area B, and integrates clock mark and forms data message, storage is more in the second buffering area
Data message, is called when to upload；Data message timing module 3 is for the completion data analysis to master control acquisition module 2
Result of calculation afterwards adds clock mark.
Again referring to Fig. 2, data conditioning conversion module 1 includes current and voltage signals converting unit 11, voltage magnitude conversion
Unit 12, direct current amplitude converting unit 13, level shifting circuit 14 and impedance inverter circuit 15, wherein：Ac current signal passes through
Overcurrent voltage signal converting unit 11 is converted into the ac voltage signal of one group of 3.3V, and ac voltage signal is through Overvoltage Amplitude
Converting unit 12 is converted into the ac voltage signal of another group of 3.3V, the ac voltage signal of this two groups of 3.3V is respectively through over level
Conversion circuit 14 is converted into the voltage signal of 0-3.3V, and the voltage signal of the 0-3.3V is transferred to by impedance inverter circuit 15
Master control acquisition module 2；DC current signal is converted into the voltage signal of 0-3.3V, the 0-3.3V through overcurrent amplitude converting unit 13
Voltage signal be transferred to master control acquisition module 2 by impedance inverter circuit 15.
Master control acquisition module 2 uses the dsp chip of model TMS320F2812.The work dominant frequency of dsp chip is
150MHz, sampling period are less than every 1 μ s, and sampling precision is 12.Again referring to Fig. 3, master control acquisition module 2 is adopted including A/D
Sample circuit 21, data register circuit 22, DSP governor circuits 23 and data storage circuitry 24, A/D sample circuits 21, data register
Circuit 22, DSP governor circuits 23 and data storage circuitry 24 are sequentially connected, 23 phase of A/D sample circuits 21 and DSP governor circuits
Even, A/D sample circuits 21 receive the voltage signal of the 0-3.3V from data conditioning conversion module 1.
Again referring to Fig. 4, data message timing module 3 uses the GPS clock chip of model ZYM-GA85-3 V2.1,
GPS clock chip is connected with DSP governor circuits 23.
The magnetic control transformer voltage control parameter acquisition and analysis device of the present invention needs to detect magnetic control transformer primary side i.e.
On high-tension side ac voltage signal and each three tunnel of ac current signal and two tunnel of DC current signal for controlling winding, one shares 8
Road signal, since dsp chip has the function of the input of 16 tunnels, in addition 8 paths can be used as spare.
Ac voltage signal and ac current signal pass through voltage transformer pt and Current Transmit correspondingly
Transformation is that exchange 100V passes through Hall sensor 4 i.e. element with 1A, DC current signal is exchanged respectively in the signal of secondary side
The conversion of HX-15P is DC voltage 5V in the signal of secondary side, it is therefore desirable to which they are respectively converted into the direct current of 3.3V
Pressure signal can just be input to data sampling module, and the effect of data conditioning conversion module 1 is exactly that point 8 paths divide above-mentioned signal
The signal of appropriate level is not converted to, and is needed with certain driving capability.
A/D sample circuits 21 acquire above-mentioned signal respectively, and 100-200 is generally acquired per cycle (20ms) to AC signal
Point, so that the calculating and frequency analysis that carry out power factor (PF) calculate, direct current signal can adopt several points, the data acquired with every cycle
It to be first stored in first buffering area A, to carry out data filtering, data analysis can be carried out after digital filtering.It completes
Result of calculation after data analysis integrates clock mark and forms data message, second buffering area B there are in second buffering area B
In can store a plurality of message, called when to upload.
Referring to Fig. 2, in 8 road signals, three tunnels are ac voltage signals, and voltage magnitude converting unit 12 respectively will
The AC signal of 100V is changed into the ac voltage signal that peak-to-peak value is 3.3V, and three road ac current signals are then needed by electricity
Galvanic electricity presses signal conversion unit 11, current signal is first converted into voltage signal, then be changed into the alternating current that peak-to-peak value is 3.3V
Signal, the ac voltage signal of this two groups of 3.3V is pressed to pass through level shifting circuit 14 respectively, becoming the voltage signal of 0-3.3V.
Two tunnel of DC current signal of magnetic control winding, by the conversion of Hall element HX-15P, by the high current of primary side
It is converted into the direct voltage output of 5V, signal is converted into 0- by corresponding two channels respectively in direct current amplitude converting unit 13
The voltage signal of 3.3V.
Above-mentioned 8 road signal is since driving capability is weaker, and it is improper to be directly inputted to data acquisition module, therefore in data tune
The link i.e. impedance inverter circuit 15 that a power amplification is increased in reason conversion module 1, increases input impedance, reduces defeated
Go out impedance, solves the problems, such as this.
Referring to Fig. 3, TMS320F2812 of the master control acquisition module 2 using TI companies, the dsp chip which is 32,
12 A/D are carried in piece.Contain the converter with assembly line there are one 12 in the ADC module of TMS320F2812, chip
Analog-to-digital conversion module has 2 independent 8 channels, both may be respectively used for the conversion of EVA and EVB, and can also be cascaded into one 16
The conversion module in channel, highest sample frequency 12.5MHz, sampling configuration can well complete data and adopt there are many form
The function of sample and data processing.
Acquisition for AC signal, it is general that 100-200 points are acquired per cycle in order to facilitate subsequent processing, it can pass through
Software set such as acquires at 196 points per road per cycle, then sets sample frequency as 9.8K, and 6 tunnels are total to acquire per cycle at 1176 points,
As acquired per cycle per road at 156 points, then sample frequency is kept to 7.8K, and 6 tunnels are total to acquire per cycle at 936 points.
The sample frequency of direct current signal can be lower, general some per cycle per road, and is determined by software.
In order to which the calculating and frequency analysis that carry out power factor (PF) calculate, the data acquired will first be stored in first buffering area
In A, to carry out data filtering, data analysis can be carried out after digital filtering.
TMS320F2812 have 128K × 16 in-chip FLASH, this segment space can be used as the program space or
It is data space, content is also protected by CSM.But in actual use, since system needs to acquire very more parameters,
It also needs to store it in chip simultaneously, internal SLASH is not enough to deal with the demand of caching, at this moment just needs to expand using external
Open up FLASH.The sram chip that this system is selected is I S61LV51216.I S61LV51216 are 512K*16 high speed storings
Chip.
TMS320F2812 passes through 19 address wires, 16 data lines, the choosing of 3 silvers and read/write control line and I
S61LV51216 is connected.I S61LV51216 are manufactured using the high-performance CMOS process of I SSI companies, and performance is high, low in energy consumption, adopts
It is powered with 3.3V.
Referring to Fig. 4, the data message timing module 3 of the present apparatus uses GPS clock chip, GPS clock chip to use
ZYM-GA85-3 V2.1 chips, the module is using NMEA0183 output protocols.The agreement is National Marine Electronics association
It can be the reference format that sea electronic equipment is formulated, define the required transport protocol of electronic signal, transmission time and the association
View is text formatting, including message header, message body, verification and and message ending.
Format shaped like：$GPsss,df 1,df 2,…[CR][LF].
It is GPS signal that wherein GP, which identifies the signal, and sss is information content identification code, and df 1, df 2 ... is the information content
Value, [CR], [LF] indicate new line respectively.
ZYM-GA85-3 V2.1 chip definitions one pins exports pps pulse per second signal, and dsp chip is according to two second arteries and veins
Rush the count value between signal, clock signal can be divided, period precision reaches millisecond, to meet regulating and controlling voltage and
The requirement of wide area synchronized phasor analysis.
By understanding the received text exported by serial ports, date and Hour Minute Second can be obtained, to be regulating and controlling voltage number
Accurate clock mark is added according to message.
In conclusion the magnetic control transformer voltage control parameter acquisition and analysis device of the present invention, can accurately and fast detect
Each three tunnel of alternating voltage and current signal of transformer primary side, the DC current signal two-way of magnetic control winding；It is built in magnetic control
Transformer can provide decision-making foundation for the control device of magnetic control transformer in time, realize that the continuous voltage of high speed is adjusted, also may be used
Using the timing module by data message as data message setting time mark, power grid is then uploaded to by communication interface modules
Operation department provides decision-making foundation for macroscopical voltage control of power grid.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (4)
1. a kind of magnetic control transformer voltage control parameter acquisition and analysis device, magnetic control winding, the voltage of external magnetic control transformer are mutual
Sensor, current transformer and communication interface modules, the voltage transformer and current transformer are separately positioned on magnetic control transformer
On high-tension side alternating current circuit on, which is characterized in that the acquisition and analysis device include Hall sensor, data conditioning become mold changing
Block, master control acquisition module and data message timing module, wherein：
The Hall sensor is connected with the magnetic control winding of the magnetic control transformer；
The data conditioning conversion module is connected with voltage transformer, current transformer and Hall sensor respectively；
The input terminal of the master control acquisition module is connected with the data conditioning conversion module and data message timing module respectively,
The output end of the master control acquisition module is connected with the communication interface modules；
The master control acquisition module is also associated with first buffering area and second buffering area；
The voltage transformer and current transformer detect the on high-tension side ac voltage signal of magnetic control transformer correspondingly
And ac current signal, and voltage signal and current signal are sent to the data conditioning conversion module correspondingly；
The DC current signal of the magnetic control winding of the Hall sensor acquisition magnetic control transformer, and DC current signal is sent
To the data conditioning conversion module；
The data conditioning conversion module receives ac voltage signal, ac current signal and DC current signal, by alternating current
Pressure signal, ac current signal and DC current signal carry out the voltage signal for being converted into 0-3.3V respectively, and 0-3.3V's
Voltage signal is sent to the master control acquisition module；
The voltage signal of 0-3.3V of the master control acquisition module acquisition from data conditioning conversion module, and by the electricity of 0-3.3V
Pressure signal is stored in the first buffering area；
The voltage signal of the 0-3.3V of acquisition is carried out data filtering and data analysis, the master by the master control acquisition module successively
Acquisition module is controlled by the result of calculation after completing data analysis there are in the second buffering area, and integrates clock mark and forms number
According to message, a plurality of data message is stored in the second buffering area, is called when to upload；
The data message timing module is for adding the result of calculation after the completion data analysis of the master control acquisition module
Clock mark,
The data conditioning conversion module includes current and voltage signals converting unit, voltage magnitude converting unit, direct current amplitude turn
Unit, level shifting circuit and impedance inverter circuit are changed, wherein：
The ac current signal is converted into the ac voltage signal of one group of 3.3V by the current and voltage signals converting unit,
The ac voltage signal is converted into the ac voltage signal of another group of 3.3V by the voltage magnitude converting unit, this two groups
The ac voltage signal of 3.3V is converted into the voltage signal of 0-3.3V by the level shifting circuit respectively, the 0-3.3V's
Voltage signal is transferred to the master control acquisition module by the impedance inverter circuit；
The DC current signal is converted into the voltage signal of 0-3.3V by the direct current amplitude converting unit, the 0-3.3V's
Voltage signal is transferred to the master control acquisition module by the impedance inverter circuit,
The master control acquisition module includes A/D sample circuits, data register circuit, DSP governor circuits and data storage circuitry, institute
It states A/D sample circuits, data register circuit, DSP governor circuits and data storage circuitry to be sequentially connected, the A/D sample circuits
It is connected with the DSP governor circuits, the A/D sample circuits receive the electricity of the 0-3.3V from the data conditioning conversion module
Press signal.
2. a kind of magnetic control transformer voltage control parameter acquisition and analysis device according to claim 1, which is characterized in that institute
State the dsp chip that master control acquisition module uses model TMS320F2812.
3. a kind of magnetic control transformer voltage control parameter acquisition and analysis device according to claim 2, which is characterized in that institute
The work dominant frequency for stating dsp chip is 150MHz, and the sampling period is less than every 1 μ s, and sampling precision is 12.
4. a kind of magnetic control transformer voltage control parameter acquisition and analysis device according to claim 3, which is characterized in that institute
State data message timing module use model ZYM-GA85-3V2.1 GPS clock chip, the GPS clock chip with it is described
DSP governor circuits are connected.
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