CN104062496B - Portable mobile electric testing recorder and optimization method therefor - Google Patents
Portable mobile electric testing recorder and optimization method therefor Download PDFInfo
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- CN104062496B CN104062496B CN201410314640.XA CN201410314640A CN104062496B CN 104062496 B CN104062496 B CN 104062496B CN 201410314640 A CN201410314640 A CN 201410314640A CN 104062496 B CN104062496 B CN 104062496B
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005457 optimization Methods 0.000 title claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 27
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims description 30
- 230000005611 electricity Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 240000007643 Phytolacca americana Species 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000004364 calculation method Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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Abstract
The invention discloses a portable mobile electric testing recorder and an optimization method therefor, and relates to electric measurement. The recorder and the optimization method are used for power generation management of a power system, and achieve measurement. More specifically, the invention discloses the recorder which is convenient and portable, and has functions of storage and calculation. The recorder comprises a current clamp, a voltage clamp, a housing, and a control circuit board. The current clamp and the voltage clamp are movably inserted in the housing. The control circuit board is provided with a collection and analysis module, a memory database, a central processor, a storage module, and a display module. The other end of the current clamp and the other end of the voltage clamp are connected with a power distribution network, and a basic signal of the power distribution network is collected. The input end of the collection and analysis module is connected with the output end of the current clamp and the output end of the voltage clamp. The memory database is connected with the output end of the collection and analysis module and the central processor. The output end of the central processor is connected with the display module and the storage module.
Description
Technical field
A kind of Portable electric quantity test monitor of the present invention and its optimization method are related to electrical measurement, are to be applied to electricity
Force system plays the device and optimization method of measurement effect in power production management, more specifically, being a kind of Portable, band
Storage and the electric quantity test monitor of computing function.
Background technology
Power system theoretical line loss caluclation is required：All basic electric quantity datas are all synchronizations, and one per hour
Value.Its purpose is to reach fine-grained management, lower loss, energy saving.See have according to current power system applicable cases
Employing walkie ammeter, per manually going to scene to make a copy of once every other hour, artificial copy data is not precisely, error is big, work
Amount is big, human cost is high.What is had is direct in platform area installation ammeter, when needing data, manually arrives at scene and often makes a copy of every other hour
Once, the method also add the input of Utilities Electric Co. in addition to drawbacks described above.
The content of the invention
The purpose of the present invention is to provide a kind of Portable electric quantity test monitor and its excellent for above-mentioned weak point
Change method, using modularized design, at utmost simplifies the degree of coupling between module, to realize the interval to platform area charge circuit
Property real time measurement of electric values, statistics and storage.
A kind of Portable electric quantity test monitor and its optimization method take technical scheme below to realize：
A kind of Portable electric quantity test monitor includes pincerlike current clamp, voltage clamp, housing and control board, electricity
Stream pincers and voltage clamp activity are plugged in housing, are provided with collection analysises module, memory database, centre in control board
The other end of reason device, memory module and display module, pincerlike current clamp and voltage clamp is connected with power distribution network, gathers the base of power distribution network
This signal；The baseband signal includes A phase voltages, B phase voltages, C phase voltages, A phase currents, B phase currents and C phase currents；Collection
The input of analysis module is connected with the outfan of current clamp and voltage clamp, and memory database is defeated with collection analysises module respectively
Go out end and central processing unit is connected, the outfan of central processing unit is connected with display module and memory module.
The big voltage signal of input is converted into small voltage signal from voltage clamp by collection analysises module, and current clamp is by A phases
The high current signal of electric current, B phase currents and C phase currents changes into small current signal in proportion, then by a high-precision sampling
Resistance changes into voltage signal；Digital signal is changed into by the analog-digital converter in collection analysises module, three are analyzed
Phase voltage and three-phase current numerical value are simultaneously stored in memory database；The three-phase electricity that central processing unit will be read from memory database
Pressure and three-phase current numerical value and time integral, calculate electric quantity data；By the numerical value and curve transmission of electric quantity data to display mould
Block shown, and statistical result is transferred to memory module is stored.
The big voltage signal is 57.7V voltages, and small voltage signal is 5V voltages.
The high current signal is 5A, and small current signal is 5mA.
The central processing unit adopts commercially available TMS320F2812PGFA processors.
Described electric quantity data includes the total of positive active electrical degree, peak, flat, paddy, sharp value, the total of reverse active electrical degree, peak,
Flat, paddy, sharp value, positive the total of idle electric degree, peak, flat, paddy, point value, reverse the total of idle electric degree, peak, flat, paddy, point value, time
The power consumption of section.
The computing formula of the power consumption is：Power consumption=active electrical degree difference × flow ratio × pressure ratio, wherein flow ratio
It is the ratio (such as 300/5=60) of electric current primary side and secondary side；Pressure ratio be the ratio of voltage primary side and secondary side (such as
100000/100=1000)。
The storage module by bus is connected with central processing unit, and long-time storing electricity data.
The display module is connected with central processing unit by bus, receives and show the numerical value and curve of electric quantity data.
The bus adopts 485 buses.
The housing, pincerlike current clamp and voltage clamp adopt PVC material, it is ensured that safe, light.Using pincerlike current clamp
Obtaining current safety, human body do not contact energized conductor, operate it is very safe, without disconnecting circuit, process is very easy.Using voltage
Cramp joint line is convenient and swift.
A kind of data optimization methods of Portable electric quantity test monitor, comprise the steps：
1）The current clamp that is connected with power distribution network, voltage clamp gather the baseband signal of power distribution network net, and by the baseband signal
Send collection analysises module to；The baseband signal includes A phase voltages, B phase voltages, C phase voltages, A phase currents, B phase currents and C
Phase current；
2）Collection analysises module is by step（1）In the baseband signal that collects be analyzed, and analysis result is transmitted to
Memory database；And stored using optimization method, optimization formula is：（1+ molecule factor ÷ denominator factors）× basic numerical value, its
Middle molecule factor 2 byte representations, 4 byte representations of denominator factor, 8 byte representations of basic numerical value；
3）Central processing unit reads three-phase voltage and three-phase current numerical value in memory database, then each by calculating
Electric quantity data is planted, and is transmitted to memory module and display module；
4）Central processing unit reads the electric energy data in memory database in real time；
5）The data that memory module is transmitted according to central processing unit, and these data are preserved for a long time；
6）The information that display module is transmitted according to central processing unit, real-time update show these data.
The present invention reduces the error of electric quantity data with facilitating line loss calculation, being easy to carry and in-site installation；Improve
The accuracy of electric quantity data；Save human cost, reduce labor intensity；Solve band metering, statistics electricity and temporally
The testing recorder of storage.
Description of the drawings
Below with reference to accompanying drawing, the invention will be further described：
Fig. 1 is the schematic flow sheet of a kind of Portable electric quantity test monitor of the invention and its optimization method.
Specific embodiment
Referring to the drawings 1, a kind of Portable electric quantity test monitor includes pincerlike current clamp, voltage clamp, housing and control
Circuit board processed, current clamp and voltage clamp activity are plugged in housing, are provided with collection analysises module, interior poke in control board
It is connected with power distribution network according to the other end of storehouse, central processing unit, memory module and display module, pincerlike current clamp and voltage clamp, adopts
The baseband signal of collection power distribution network；The baseband signal includes A phase voltages, B phase voltages, C phase voltages, A phase currents, B phase currents and C
Phase current；The input of collection analysises module is connected with the outfan of current clamp and voltage clamp, memory database respectively with collection
The outfan and central processing unit of analysis module is connected, outfan and display module and the memory module phase of central processing unit
Even.
The big voltage signal of input is converted into small voltage signal from voltage clamp by collection analysises module, and current clamp is by A phases
The high current signal of electric current, B phase currents and C phase currents changes into small current signal in proportion, then by a high-precision sampling
Resistance changes into voltage signal；Digital signal is changed into by the analog-digital converter in collection analysises module, three are analyzed
Phase voltage and three-phase current numerical value are simultaneously stored in memory database；The three-phase electricity that central processing unit will be read from memory database
Pressure and three-phase current numerical value and time integral, calculate electric quantity data；By the numerical value and curve transmission of electric quantity data to display mould
Block shown, and statistical result is transferred to memory module is stored.
The big voltage signal is 57.7V voltages, and small voltage signal is 5V voltages.
The high current signal is 5A, and small current signal is 5mA.
The central processing unit adopts commercially available TMS320F2812PGFA processors.
Described electric quantity data includes the total of positive active electrical degree, peak, flat, paddy, sharp value, the total of reverse active electrical degree, peak,
Flat, paddy, sharp value, positive the total of idle electric degree, peak, flat, paddy, point value, reverse the total of idle electric degree, peak, flat, paddy, point value, time
The power consumption of section.
The computing formula of the power consumption is：Power consumption=active electrical degree difference × flow ratio × pressure ratio, wherein flow ratio
It is the ratio (such as 300/5=60) of electric current primary side and secondary side；Pressure ratio be the ratio of voltage primary side and secondary side (such as
100000/100=1000)。
The storage module by bus is connected with central processing unit, and long-time storing electricity data.
The display module is connected with central processing unit by bus, receives and show the numerical value and curve of electric quantity data.
The bus adopts 485 buses.
The housing, pincerlike current clamp and voltage clamp adopt PVC material, it is ensured that safe, light.Using pincerlike current clamp
Obtaining current safety, human body do not contact energized conductor, operate it is very safe, without disconnecting circuit, process is very easy.Using voltage
Cramp joint line is convenient and swift.
A kind of data optimization methods of Portable electric quantity test monitor, comprise the steps：
1）The current clamp that is connected with power distribution network, voltage clamp gather the baseband signal of power distribution network net, and by the baseband signal
Send collection analysises module to；The baseband signal includes A phase voltages, B phase voltages, C phase voltages, A phase currents, B phase currents and C
Phase current；
2）Collection analysises module is by step（1）In the baseband signal that collects be analyzed, and analysis result is transmitted to
Memory database；And stored using optimization method, optimization formula is：（1+ molecule factor ÷ denominator factors）× basic numerical value, its
Middle molecule factor 2 byte representations, 4 byte representations of denominator factor, 8 byte representations of basic numerical value；One monitoring
Point once needs the data for storing to have 20, needs within one day storage 288 times, and according to conventional storage, each data is with 8 bytes
Floating number represents that then memory space is：20 × 288 × 8=46080 bytes.And adopt optimization method to store, then memory space
For：20×（2 × 288+4+8）=11760 bytes.Actual to save 34320 bytes, saving percentage ratio is：（46080-
11760）46080 × 100%=74.48% of ÷；
3）Central processing unit reads three-phase voltage and three-phase current numerical value in memory database, then each by calculating
Electric quantity data is planted, and is transmitted to memory module and display module；
4）Central processing unit reads the electric energy data in memory database in real time；
5）The data that memory module is transmitted according to central processing unit, and these data are preserved for a long time；
6）The information that display module is transmitted according to central processing unit, real-time update show these data messages.
Claims (6)
1. a kind of Portable electric quantity test monitor, it is characterised in that：Including pincerlike current clamp, voltage clamp, housing and control
Circuit board processed, current clamp and voltage clamp activity are plugged in housing, are provided with collection analysises module, interior poke in control board
It is connected with power distribution network according to the other end of storehouse, central processing unit, memory module and display module, current clamp and voltage clamp, collection is matched somebody with somebody
The baseband signal of electrical network；The baseband signal includes that A phase voltages, B phase voltages, C phase voltages, A phase currents, B phase currents are electric with C phases
Stream；The input of collection analysises module is connected with the outfan of current clamp and voltage clamp, memory database respectively with collection analysises
The outfan and central processing unit of module is connected, and the outfan of central processing unit is connected with display module and memory module；
The big voltage signal of input is converted into small voltage signal from voltage clamp by collection analysises module, current clamp by A phase currents,
The high current signal of B phase currents and C phase currents changes into small current signal in proportion, then is turned by a high-precision sampling resistor
Into voltage signal；Digital signal is changed into by the analog-digital converter in collection analysises module, three-phase voltage is analyzed
With three-phase current numerical value and it is stored in memory database；Central processing unit is by the three-phase voltage and three read from memory database
Phase current numerical value and time integral, calculate electric quantity data；The numerical value and curve transmission of electric quantity data are carried out to display module
Show, and statistical result is transferred to into memory module and stored；
The data optimization methods of Portable electric quantity test monitor, comprise the steps：
1）The current clamp that is connected with power distribution network, voltage clamp gather the baseband signal of power distribution network net, and the baseband signal is transmitted
Give collection analysises module；The baseband signal includes A phase voltages, and B phase voltages, C phase voltages, A phase currents, B phase currents are electric with C phases
Stream；
2）Collection analysises module is by step 1）In the baseband signal that collects be analyzed, and analysis result is transmitted to into interior poke
According to storehouse；And stored using optimization method, optimization formula is：（1+ molecule factor ÷ denominator factors）× basic numerical value, wherein molecule
Factor 2 byte representations, 4 byte representations of denominator factor, 8 byte representations of basic numerical value；
3）Central processing unit reads three-phase voltage and three-phase current numerical value in memory database, then various by calculating
Electric quantity data, and it is transmitted to memory module and display module；
4）Central processing unit reads the electric energy data in memory database in real time；
5）The data that memory module is transmitted according to central processing unit, preserve these data for a long time；
6）The information that display module is transmitted according to central processing unit, real-time update show these data messages.
2. Portable electric quantity test monitor according to claim 1, it is characterised in that：The big voltage signal is
57.7V voltages, small voltage signal are 5V voltages.
3. Portable electric quantity test monitor according to claim 1, it is characterised in that：The high current signal is
5A, small current signal are 5mA.
4. Portable electric quantity test monitor according to claim 1, it is characterised in that：The central processing unit is adopted
Use TMS320F2812PGFA processors.
5. Portable electric quantity test monitor according to claim 1, it is characterised in that：Described electric quantity data bag
Include the total of positive active electrical degree, peak, flat, paddy and sharp value, the total of reverse active electrical degree, peak, flat, paddy and point value, positive idle electricity
The total of degree, peak, flat, paddy and point value, reverse the total of idle electric degree, peak, flat, paddy and point value, the power consumption of time period.
6. Portable electric quantity test monitor according to claim 5, it is characterised in that：The calculating of the power consumption
Formula is：Power consumption=active electrical degree difference × flow ratio × pressure ratio, wherein flow ratio are the ratios of electric current primary side and secondary side
Value；Pressure ratio is the ratio of voltage primary side and secondary side.
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| CN201410314640.XA CN104062496B (en) | 2014-07-03 | 2014-07-03 | Portable mobile electric testing recorder and optimization method therefor |
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| CN201410314640.XA CN104062496B (en) | 2014-07-03 | 2014-07-03 | Portable mobile electric testing recorder and optimization method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107632222A (en) * | 2017-11-17 | 2018-01-26 | 广东电网有限责任公司清远供电局 | A kind of portable load Analysis warning system and method |
| CN108918995A (en) * | 2018-06-12 | 2018-11-30 | 六盘水金星机电设备有限公司 | A kind of portable three-phase power load monitor |
| CN110346748A (en) * | 2019-07-05 | 2019-10-18 | 国网福建省电力有限公司电力科学研究院 | A kind of electric power metering system fault testing optimization method |
| CN113075449A (en) * | 2021-03-26 | 2021-07-06 | 国网江苏省电力有限公司镇江供电分公司 | Portable electric quantity measuring instrument |
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Inventor after: Dai Shaoyong Inventor after: Wang Hongyin Inventor after: Zhang Yue Inventor after: Qian Guangming Inventor after: Xu Xinghai Inventor after: Zhang Lei Inventor after: Zhang Shaoyun Inventor before: Dai Shaoyong Inventor before: Zhang Lei Inventor before: Zhang Shaoyun |
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Effective date of registration: 20161215 Address after: No. 58 Suqian City, Jiangsu province 223800 Avenue development Sucheng District Applicant after: Jiangsu Suqian Power Supply Company Applicant after: Suqian Electric Power Design Institute Co., Ltd. Applicant after: Jiangsu Electric Power Company Applicant after: State Power Networks Co Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Power Networks Co Applicant before: Jiangsu Electric Power Company Applicant before: Jiangsu Suqian Power Supply Company |
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