CN209086322U - Multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications - Google Patents
Multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications Download PDFInfo
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- CN209086322U CN209086322U CN201821711480.2U CN201821711480U CN209086322U CN 209086322 U CN209086322 U CN 209086322U CN 201821711480 U CN201821711480 U CN 201821711480U CN 209086322 U CN209086322 U CN 209086322U
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Abstract
Multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications, including a host A, at least a slave, the host A includes the first exchange conversion module, the first multiplexing module, the first analog to digital conversion module, the first wireless communication module, the first CPU processing module, DSP module, the first LCD MODULE, memory module.The slave includes the second exchange conversion module, the second multiplexing module, the second analog to digital conversion module, the second wireless communication module, the 2nd CPU processing module, the second LCD MODULE.The slave include slave 1., slave 2..The device controls multiterminal voltage by wireless synchronization signal, electric current synchronizes sampling, and intuitively shown the amplitudes of more side comparative quantities, phase and between difference, it solves the comparison that conventional method needs a large amount of manpowers to discharge the voltage that temporary cable carries out, has captured the comparison verification problem of the magnitude of current apart from each other.
Description
Technical field
The utility model relates to a kind of volt-ampere phase meter, specifically a kind of multiterminal voltage, electric current based on wireless telecommunications are same
Walk sampling apparatus.
Background technique
With speeding up the construction for smart grid, the quantity of intelligent substation increases sharply, compared with traditional substation, skill
Art has biggish variation, is mainly reflected in decentralized and layered distribution type the structure of relay protection function, thus brings
The a series of variation such as maintenance and debugging method.Such as substation be newly spaced put into operation and bus equipment maintenance after restore power transmission
When, it needs by carrying out phase and amplitude inspection to the transformed electrical quantity of corresponding voltage transformer, current transformer, so as to
Wiring error or loop fault are found in time in technical staff, are corrected to take appropriate measures.In traditional substation
These electrical quantity are all concentrated and are introduced into control room or protective chamber, and testing and checking the amplitude of this tittle and phase only needs one piece ten thousand
It can be completed with table or pincerlike phase meter.Nowadays in intelligent substation, the group of " routine transformer+combining unit " is mostly used greatly
Syntype, since these electrical quantity are being converted into digital quantity on the spot, if to carry out these secondary voltage amplitude, phase and poles
Property checking work, a cable need to be drawn from reference side bus PT, reference quantity is drawn, is then compared one by one at by nuclear phase
It is right, as shown in Fig. 1 of Figure of description, in which: reference side a, to core side b, temporary cable L0, digital multimeter G.
Since general substation is larger, minimum tens meters of temporary cable L0 are led, elder temporarily connects up to rice up to a hundred
Also need more people to cooperate when entering related electric amount, so with the conventional method nuclear phase, it appears it is complicated and time-consuming, laborious, in order to
Effective length can be effectively shortened when discharging temporary cable, it is unavoidable using high-tension apparatus area is passed in straight line through, as shown in Fig. 2, passing
System scheme works personnel need to draw cable penetration high-voltage operation area, and there are security risks.After new transformer puts into operation on-load, carry out
Each side current amplitude and polarity check, if by connect prevention temporary cable carry out, it is possible that current open situation and cause thing
Therefore so traditional cable access verification polarity method is not suitable for the inspection of current loop.
Summary of the invention
In order to solve the above technical problems, the utility model provides a kind of multiterminal voltage, current synchronization based on wireless telecommunications
Sampling apparatus, voltage, electric current to core side (slave 1. or slave 2.) synchronize sampling under reference side (host) control, so
After be transmitted to compared with host computer side and reference quantity carry out phase, amplitude verification property, by calculation processing real-time display go out each amount it
Between amplitude, phase and angular difference.
Multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications, including a host A, an at least slave, institute
Stating host A includes the first exchange conversion module, the first multiplexing module, the first analog to digital conversion module, the first wireless telecommunications mould
Block, the first CPU processing module, DSP module, the first LCD MODULE, memory module.
The first exchange conversion module connects the first multiplexing module, and the first multiplexing module connects the first modulus
Conversion module, the first analog to digital conversion module connect the first CPU processing module, and it is wireless that the first CPU processing module is separately connected first
Communication module, DSP module, the first wireless communication module connect DSP module, DSP module be separately connected the first LCD MODULE,
Memory module.
The slave includes the second exchange conversion module, the second multiplexing module, the second analog to digital conversion module, the second nothing
Line communication module, the 2nd CPU processing module, the second LCD MODULE.
Second exchange conversion module connects the second multiplexing module, and the second multiplexing module connects the second analog to digital conversion
Module, the second analog to digital conversion module connect the 2nd CPU processing module, and the 2nd CPU processing module connects the second LCD MODULE,
2nd CPU processing module connects the second wireless communication module.
The slave include slave 1., slave 2..
A kind of multiterminal voltage based on wireless telecommunications of the utility model, current synchronization sampling apparatus, technical effect are as follows:
1,1. or after 2. handling the sampled data of this side slave is shown on this side LCD MODULE, facilitates work
Make the validity that personnel verify the access of local terminal electricity.
2, the DSP module that more side sampled datas enter host is calculated, calculate arrange much the amplitude of side test amount,
Phase and between difference, show on LCD MODULE, measurement data can be saved by button operation respectively
Processing, automatically generates test report, is stored in SD card and facilitates export.
3, multimachine (direct-view 80-120 meter) reliable communicating in a certain range, with distance increase or between have hard block
When object, communication effect can decline, and pluggable external antenna is at this time to increase communication distance.
4, host and slave processors configuration large capacity rechargeable lithium battery power supply, stand-by time is long, meets multitask and tests for a long time
It needs.
5, using large-screen lc display module, p-wire is distinguished with color, and overall construction is beautiful, convenient, facilitates test
The corresponding access of electricity.
6, multiterminal voltage is controlled by wireless synchronization signal, electric current synchronizes sampling, and intuitively shown more sides
The amplitude of comparative quantity, phase and between difference, solve conventional method and a large amount of manpowers needed to discharge what temporary cables carried out
The comparison verification problem of the magnitude of current apart from each other has been captured in the comparison of voltage.
Detailed description of the invention
Fig. 1 is that secondary voltage amplitude described in background technique, phase and polarity check schematic diagram.
Fig. 2 is conventional method nuclear phase operation chart described in background technique.
Fig. 3 is utility model device test schematic diagram.
Fig. 4 is utility model device test sequence figure.
Fig. 5 is the main machine structure schematic diagram of utility model device.
Fig. 6 is the slave structural schematic diagram of utility model device.
Specific embodiment
As shown in Fig. 3,5,6, multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications, including a host A,
An at least slave, the host A include the first exchange conversion module 1, the first multiplexing module 2, the first analog to digital conversion mould
Block 3, the first wireless communication module 4, the first CPU processing module 5, DSP module 6, the first LCD MODULE 7, memory module 8.
The first exchange conversion module 1 connects the first multiplexing module 2, the first multiplexing module 2 connection first
Analog to digital conversion module 3, the first analog to digital conversion module 3 connect the first CPU processing module 5, and the first CPU processing module 5 is separately connected
First wireless communication module 4, DSP module 6, the first wireless communication module 4 connect DSP module 6, and DSP module 6 is separately connected first
LCD MODULE 7, memory module 8.The memory module 8 uses SD card.
The slave include the second exchange conversion module 9, the second multiplexing module 10, the second analog to digital conversion module 11,
Second wireless communication module 12, the 2nd CPU processing module 13, the second LCD MODULE 14.
Second exchange conversion module 9 connects the second multiplexing module 10, and the second multiplexing module 10 connects the second mould
Transformation of variables module 11, the second analog to digital conversion module 11 connect the 2nd CPU processing module 13, the 2nd CPU processing module 13 connection the
Two LCD MODULEs 14, the 2nd CPU processing module 13 connect the second wireless communication module 12.
The exchange conversion module, voltage, the magnitude of current for input carry out transformation of scale.
First and second exchange conversion module uses DB-4824E exchange conversion module.
The multiplexing module is switched to small signal for voltage, magnitude of current signal.
First and second multiplexing module uses AD7606BSTZ module.
The wireless communication module, for issuing/receiving synchronized sampling instruction.
First and second wireless communication module uses NRF24L01 radio receiving transmitting module.
The display module, for showing the sampled data of this side, display module uses large-screen lc display module.
First and second display module uses SDW6448-056-TN20W escope.
The DSP module 6, for calculating more side sampled datas, the amplitudes of more side test amounts, phase and between difference
Value, shows respectively on the first LCD MODULE 7.
DSP module 6 uses TMS320F2833DSP processor.
First and second CPU processing module uses STM32F103 single-chip microcontroller.
First wireless communication module 4, the equal grafting external antenna of the second wireless communication module 12.
The host A, slave include large capacity rechargeable lithium battery.
The slave include slave 1., slave 2..
Wireless test is as shown in figure 3, the of ac of input includes: three groups of voltages (0-500V/ phase), three groups of electric current (0.01-
1A or 0.1-10A/ phase, with the clamp of different accuracy), these electrical quantity can cover bis- electricity of monospace unit and bus PT
Demand.Host A and slave appearance are essentially identical, and slave has lacked calculation processing and memory module with respect to host A, and slave is only shown
This side electricity is without showing his side electricity.After multimachine booting, opposite end mark code signal is found by wireless communication module and is established
It shakes hands connection, slave optional any or two as needed, after guaranteeing that more side synchronized samplings, multi computer communication connection are established,
1. or 2. host A can issue a frame synchronization sample command, and including sampling sequence number, slave is in the order for receiving host A and sending
After return to a frame data, which includes the information such as slave slave sampling sequence number 1. or 2. and the sampling corresponding time,
After host A receives the corresponding data message of slave 1. or 2., can calculating communications delay, 1. or 2. side is adopted with slave slave
Sample time difference Δ t.n(n is 1 or 2), and host A determines adjustment number, by the sampling time according to the deviation of this sampling instant
The fine tuning of number, until Δ t.n=0, the sampling of side each in this way will be fully synchronized, and timing such as Fig. 4 shows.It will by calculation processing
As a result the first LCD MODULE 7 is sent to be shown, each end voltage, electric current herein be the voltage being separated by a certain distance,
The magnitude of current.Voltage, the electric current of these different locations, which are not required to connect them to same place with conducting wire, carries out concentration measurement, and only needs
Amplitude and phase bit comparison can be carried out to them by synchronizing sampling to them in synchronization.
The course of work:
First by the host A of Fig. 5, Fig. 6 slave according to actual measurement demand, related electric amount is accessed into each tester
On, voltage using three-phase be total to the neutral conductor star input, electric current using principle of induction three an outpost of the tax offices clamp (precision have 0.01-1A,
0.1-10A is optional) it measures, which can not contact circuit and measure, and operate safe and convenient.The voltage of input,
The magnitude of current carries out transformation of scale in exchange conversion module, enters back into multipath conversion and switches over, and the small signal after switching enters
Then analog to digital conversion module is passed in the first CPU processing module 5, by man machine operation interface on host A, click " multimachine without
Line volt-ampere test " key, meter receive instruction and feed back to the first CPU processing module 5, the first CPU processing module 5 control the
One wireless communication module 4 issues synchronized sampling instruction, this instructs the agreement arranged between host and slave processors.
Slave 1., synchronized sampling order is 2. received by communication module after, start to sample.Since host command passes through wirelessly
Delay can be generated after communication module transmission, the sampling between master-slave equipment will be asynchronous.Calculating sampling sequence number, which synchronizes, to be adjusted,
With the adjustment of multiple repairing weld time and number, it is finally reached more side synchronized samplings.
Claims (9)
1. multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications, including a host (A), an at least slave,
Be characterized in that: the host (A) includes the first exchange conversion module (1), the first multiplexing module (2), the first analog to digital conversion
Module (3), the first wireless communication module (4), the first CPU processing module (5), DSP module (6), the first LCD MODULE
(7), memory module (8)；
The first exchange conversion module (1) connects the first multiplexing module (2), the first multiplexing module (2) connection the
One analog to digital conversion module (3), the first analog to digital conversion module (3) connect the first CPU processing module (5), the first CPU processing module
(5) it is separately connected the first wireless communication module (4), DSP module (6), the first wireless communication module (4) connects DSP module (6),
DSP module (6) is separately connected the first LCD MODULE (7), memory module (8)；
The slave includes the second exchange conversion module (9), the second multiplexing module (10), the second analog to digital conversion module
(11), the second wireless communication module (12), the 2nd CPU processing module (13), the second LCD MODULE (14)；
Second exchange conversion module (9) connects the second multiplexing module (10), the second multiplexing module (10) connection second
Analog to digital conversion module (11), the second analog to digital conversion module (11) connect the 2nd CPU processing module (13), the 2nd CPU processing module
(13) the second LCD MODULE (14) are connected, the 2nd CPU processing module (13) connects the second wireless communication module (12).
2. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
Exchange conversion module is stated, voltage, the magnitude of current for input carry out transformation of scale.
3. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
Multiplexing module is stated, is switched to small signal for voltage, magnitude of current signal.
4. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
Wireless communication module is stated, for issuing/receiving synchronized sampling instruction.
5. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
Display module is stated, for showing the sampled data of this side.
6. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
State DSP module (6), for calculating more side sampled datas, the amplitudes of more side test amounts, phase and between difference, first
LCD MODULE is shown respectively on (7).
7. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
State the first wireless communication module (4), the second wireless communication module (12) grafting external antenna.
8. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
State host (A), slave includes large capacity rechargeable lithium battery.
9. the multiterminal voltage based on wireless telecommunications, current synchronization sampling apparatus according to claim 1, it is characterised in that: institute
State slave include slave 1., slave 2..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821711480.2U CN209086322U (en) | 2018-10-22 | 2018-10-22 | Multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821711480.2U CN209086322U (en) | 2018-10-22 | 2018-10-22 | Multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications |
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| Publication Number | Publication Date |
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| CN209086322U true CN209086322U (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821711480.2U Expired - Fee Related CN209086322U (en) | 2018-10-22 | 2018-10-22 | Multiterminal voltage, current synchronization sampling apparatus based on wireless telecommunications |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117395098A (en) * | 2023-12-07 | 2024-01-12 | 青岛艾诺仪器有限公司 | Digital real-time parallel operation method and system |
-
2018
- 2018-10-22 CN CN201821711480.2U patent/CN209086322U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117395098A (en) * | 2023-12-07 | 2024-01-12 | 青岛艾诺仪器有限公司 | Digital real-time parallel operation method and system |
| CN117395098B (en) * | 2023-12-07 | 2024-03-05 | 青岛艾诺仪器有限公司 | Digital real-time parallel operation method and system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20211022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |