CN110161448A - A kind of 10kV portable high-pressure wideband electric energy on-site calibrating method and device - Google Patents
A kind of 10kV portable high-pressure wideband electric energy on-site calibrating method and device Download PDFInfo
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- CN110161448A CN110161448A CN201910342440.8A CN201910342440A CN110161448A CN 110161448 A CN110161448 A CN 110161448A CN 201910342440 A CN201910342440 A CN 201910342440A CN 110161448 A CN110161448 A CN 110161448A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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Abstract
The application discloses a kind of 10kV portable high-pressure wideband electric energy on-site calibrating method and device, and method includes carrying out real load check to high pressure gauge to be verified using high pressure wideband standard scale；Virtual load verification is carried out to high pressure gauge to be verified using calibration power source；Device includes high pressure wideband standard scale, calibration power source and error meter；The present processes stability is high, function is easily achieved, and applicability with higher, anti-interference ability is weak when solving field-checking in the prior art, the not high problem of portability.
Description
Technical field
This application involves electric system electric energy detection technical field more particularly to a kind of 10kV portable high-pressure wideband electric energy
On-site calibrating method and device.
Background technique
With the development of national economy, power system power supply load increasingly complex, power load is to power system power supply
Requirement it is also higher and higher.The type load includes electric locomotive traction, smelting iron and steel, wind-power electricity generation, photovoltaic power generation, automobile charging
It stands, mostly the supporting industry of national development.As new energy development utilizes, electric car also starts to go on the arena of history, according to
The national new energy vehicle production and marketing situations in 2015 that China Association for Automobile Manufacturers announces, annual production altogether 34.04 ten thousand in 2015 are new
Energy vehicle increases by 3.3 times on a year-on-year basis；33.1 ten thousand are sold, increases by 3.4 times on a year-on-year basis.Wherein, pure electric automobile production and marketing respectively reaches
25.4 ten thousand, 24.7 ten thousand, growth surpass 4 times.From the point of view of the whole nation, the estimated new energy in the whole nation 2016N of China Association for Automobile Manufacturers
Source vehicle sales volume will double, and reach 700,000.If according in July, 2014 to the end of the year 2015, the sales volume of national new-energy automobile
Data establish statistical models, analyze the results show that the new-energy automobile sales volume of the first half of the year in 2016 is up to 540,000, it is contemplated that
Whole year will be more than 1,000,000, so the construction and metering of electric automobile charging station also just become urgent problem to be solved.
The power load of the above-mentioned type not only has an impact power quality, is easy to cause power grid to contain harmonic wave, and right
Electrical energy measurement also has an impact.Therefore, the electric parameter on-line metering technology under typical complex electricity consumption operating condition is studied, anti-interference energy is researched and developed
The on-line metering method and device that power is strong, is easily installed accurately is measured and is traced to the source for solving power distribution network electricity under complex working condition
Problem is of great significance.
Summary of the invention
The application provides a kind of 10kV portable high-pressure wideband electric energy on-site calibrating method and device, to solve the prior art
The problem of middle anti-interference ability is weak, equipment not readily portable installation.Also, method and device provided by the embodiments of the present application is stablized
Property high, function be easily achieved, applicability with higher.
This application provides a kind of 10kV portable high-pressure wideband electric energy on-site calibrating methods, comprising:
Real load check is carried out to high pressure gauge to be verified using high pressure wideband standard scale；
Virtual load verification is carried out to high pressure gauge to be verified using calibration power source.
Optionally, described to include: to the real load check of high pressure gauge to be verified progress using high pressure wideband standard scale
Connect respectively by high pressure wideband standard scale access high-tension line in parallel with high pressure gauge to be verified, and using same error meter
It is connected to high pressure wideband standard scale and high pressure gauge to be verified；
Error meter obtain respectively the detection of high pressure wideband standard scale the first energy value WN and high pressure gauge to be verified detection the
Two energy value WX；The first energy value WN and the second energy value WX includes voltage, electric current, frequency, phase, harmonic wave, active
One of power, reactive power, apparent energy, power factor, active energy, reactive energy；
Calculate high pressure gauge relative error γ to be verified.
Optionally, described to include: to high pressure gauge to be verified progress virtual load verification using calibration power source
Calibration power source is connected with high pressure gauge to be verified and accesses high-tension line, and is respectively connected to using same error meter
Calibration power source and high pressure gauge to be verified；
Calibration power source exports preset power parameter, obtains theoretical energy value WM according to the power parameter of output；
Error meter obtains the third energy value WY of high pressure gauge detection to be verified；The theory energy value WM and third energy value
WY includes voltage, electric current, frequency, phase, harmonic wave, active power, reactive power, apparent energy, power factor, active electricity
One of energy, reactive energy；
Calculate high pressure gauge relative error γ to be verified.
Present invention also provides a kind of 10kV portable high-pressure wideband electric energy on-site calibration devices, comprising: high pressure wideband mark
Quasi- table, calibration power source and error meter；Wherein, the high pressure wideband standard scale is used to carry out high pressure gauge to be verified in real load school
It tests；The calibration power source is used to carry out virtual load verification to high pressure gauge to be verified；
The high pressure wideband standard scale includes high pressure V/V AC/DC changeover switch, high pressure I/V AC/DC changeover switch and three-phase mark
Quasi- table；High-tension line is accessed in one end of the high pressure V/V AC/DC changeover switch, is converted into high voltage signal using resistive-capacitive voltage divider
Low voltage signal；The other end of the high pressure V/V AC/DC changeover switch is connect with three-phase standard scale；The high pressure I/V alternating current-direct current
Converter is set on high-tension line, and is connect with three-phase standard scale, for high current signal to be converted into small voltage signal；
The calibration power source is a voltage circuit in parallel with high-tension line, voltage circuit by three-phase current source group with
One three-phase high-voltage is source-series to be formed；
The error meter is used to obtain the electrical energy parameter of high pressure gauge to be verified and calculates high pressure to be verified according to electrical energy parameter
Table relative error γ；The electrical energy parameter includes that voltage, electric current, frequency, phase, harmonic wave, active power, reactive power, view exist
Power, power factor, one kind of active energy, reactive energy.
Optionally, three-phase current source group includes three three-phase current sources being connected in parallel.
Optionally, the three-phase standard scale includes three-phase divider, high-precision A/D collector, FPGA synchronizing device and micro-
Processor；
The three-phase divider is used to receive high pressure V/V AC/DC changeover switch and high pressure I/V AC/DC changeover switch measures
Signal；
The high-precision A/D collector for acquiring signal in real time；
The FPGA synchronizing device is used to synchronize the A/D acquisition signal of multichannel；
The microprocessor is used to transfer synchronization signal and display operation.
Optionally, the microprocessor includes high definition touch screen, keyboard and communication interface.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of 10kV portable high-pressure wideband electric energy on-site calibrating method of the application；
Fig. 2 is that a kind of 10kV portable high-pressure wideband electric energy on-site calibration device of the application carries out real load check process
Device connection figure；
Fig. 3 is that a kind of 10kV portable high-pressure wideband electric energy on-site calibration device of the application carries out virtual load checking procedure
Device connection figure；
Fig. 4 is carried out for a kind of 10kV portable high-pressure wideband electric energy on-site calibration device of the application during real load check
Circuit interconnect pattern.
Specific embodiment
It is a kind of flow chart of 10kV portable high-pressure wideband electric energy on-site calibrating method of the application referring to Fig. 1；
As shown in Figure 1, the embodiment of the present application provides a kind of 10kV portable high-pressure wideband electric energy on-site calibrating method, institute
The method of stating includes:
S10: real load check is carried out to high pressure gauge to be verified using high pressure wideband standard scale；
S20: virtual load verification is carried out to high pressure gauge to be verified using calibration power source.
In the embodiment of the present application, field-checking is carried out to high pressure gauge to be verified, main includes that real load check and void are negative
Lotus verifies two aspects, for two checking procedures, it is believed that is individualism, i.e., individually a certain checking procedure is also reachable
To the purpose of on-line metering, can also complete to verify by the way of two checking procedure cooperations, therefore, in practical application
When, need to consider that the concrete condition at scene selects verification step to be taken, the application device used by verifying and step
On rapid with no restriction.
Firstly, to step S10: carrying out real load check to high pressure gauge to be verified using high pressure wideband standard scale and say
Bright: the verification step of the process is needed using high pressure wideband standard scale, for the concrete specification model of standard scale, in the present embodiment
In with no restriction；
In checking procedure, step S10 is specifically included:
Connect respectively by high pressure wideband standard scale access high-tension line in parallel with high pressure gauge to be verified, and using same error meter
It is connected to high pressure wideband standard scale and high pressure gauge to be verified；At this moment, the inspection that above-mentioned two table detects can be obtained by error meter
Measured data is simultaneously analyzed；
Error meter obtains the first energy value W of high pressure wideband standard scale detection respectivelyNWith the of high pressure gauge to be verified detection
Two energy value WX；The first energy value WNWith the second energy value WXIt include voltage, electric current, frequency, phase, harmonic wave, wattful power
One of rate, reactive power, apparent energy, power factor, active energy, reactive energy；
Calculate high pressure gauge relative error γ to be verified；Specifically, being calculated using following equation:
Since high pressure wideband standard scale has the power and electric energy measurement function of fundamental wave Yu 2-64 subharmonic and DC component,
Therefore it can be verified by every detection parameters of the high pressure wideband standard scale to high pressure gauge to be verified, verification with higher
Precision.
Secondly, to step S20: virtual load verification is carried out to high pressure gauge to be verified using calibration power source and is illustrated:
The verification step of the process is needed using calibration power source, and in the present embodiment, calibration power source can select one
The form of the composition in platform three-phase high-voltage source and three three-phase current sources is reconfigured related wherein using being connected in parallel between current source
Control program and software program, can get separate unit maximum current 350A, can three parallel runnings, maximum current 1kA and other effects；
In checking procedure, step S20 is specifically included:
Calibration power source is connected with high pressure gauge to be verified and accesses high-tension line, and is respectively connected to using same error meter
Calibration power source and high pressure gauge to be verified；At this moment, the testing number that high pressure gauge to be verified detects can be obtained by error meter
Accordingly and the output data in calibration power source, it and is analyzed；
Calibration power source exports preset power parameter, obtains theoretical energy value W according to the power parameter of outputM；
Error meter obtains the third energy value W of high pressure gauge detection to be verifiedY；The theory energy value WMWith third energy value
WYIt include voltage, electric current, frequency, phase, harmonic wave, active power, reactive power, apparent energy, power factor, active electricity
One of energy, reactive energy；
Calculate high pressure gauge relative error γ to be verified.Specifically, being calculated using following equation:
The embodiment of the present application provides a kind of 10kV portable high-pressure wideband electric energy on-site calibrating method, including uses high pressure
Wideband standard scale carries out real load check to high pressure gauge to be verified；Virtual load is carried out to high pressure gauge to be verified using calibration power source
Verification；The present processes stability is high, function is easily achieved, applicability with higher, solves live in the prior art
Anti-interference ability is weak when verification, the not high problem of portability.
Present invention also provides a kind of calibration equipment applied to the above method, including high pressure wideband standard scale 1, standard function
Rate source 2 and error meter 3；Wherein, the high pressure wideband standard scale 1 is filled for carrying out real load check to high pressure gauge 10 to be verified
It is as shown in Figure 2 to set connection；The calibration power source 2 is used to carry out high pressure gauge 10 to be verified virtual load verification, and device connects such as
Shown in Fig. 3；
Referring to fig. 4, real load check is carried out for a kind of 10kV portable high-pressure wideband electric energy on-site calibration device of the application
Circuit interconnect pattern in the process.
As shown in Figure 4, the high pressure wideband standard scale includes high pressure V/V AC/DC changeover switch 11, and high pressure I/V alternating current-direct current turns
Parallel operation 12 and three-phase standard scale 13；High-tension line is accessed in one end of the high pressure V/V AC/DC changeover switch 11, using resistive-capacitive voltage divider
High voltage signal is converted into low voltage signal；The other end and three-phase standard scale 13 of the high pressure V/V AC/DC changeover switch 11
Connection；The high pressure I/V AC/DC changeover switch 12 is set on high-tension line, and is connect with three-phase standard scale 13, and being used for will big electricity
Stream signal is converted into small voltage signal；High pressure V/V AC/DC changeover switch proposed adoption resistive-capacitive voltage divider, high-pressure section have carried out good exhausted
Edge, can direct hanging net operation, voltage divider output voltage nominal value be 5Vrms (10kV)；And high pressure I/V AC/DC changeover switch according to
High-voltage applications scene carries out Specialty Design, and 3 wideband current comparators of proposed adoption have simultaneously carried out good insulation to high-pressure section, can
It is placed directly on high voltage bus and uses.Converter output current nominal value is 0.5Arms, and output is all made of with direct current supply part
High-tension cable.Measurement range: 10A~1000A；Measurement bandwidth: (fundamental wave band: 45Hz~1kHz；Harmonic band: 45Hz~5kHz).
Further, the three-phase standard scale used in the present embodiment includes three-phase divider 131, high-precision A/D collector
132, FPGA synchronizing devices 133 and microprocessor 134；
The three-phase divider 131 is for receiving high pressure V/V AC/DC changeover switch 11 and high pressure I/V AC/DC changeover switch
12 signals measured；Place A/B/C three-phase divider 131 respectively in 1 cabinet.Measurement range: 1k V~10kV；Measure band
It is wide: (fundamental wave band: 45Hz~1kHz；Harmonic band: 45Hz~5kHz).
The high-precision A/D collector 132 for acquiring signal in real time；
The FPGA synchronizing device 133 is used to synchronize the A/D acquisition signal of multichannel, it is ensured that the synchronism of signal；
The microprocessor 134 is used to transfer synchronization signal and display operation.
Further, in order to more optimize operation, the microprocessor includes high definition touch screen 1341,1342 He of keyboard
Communication interface 1343；Wherein high definition touch screen provides hand touch operation, and keyboard provides keyboard-type input, and communication interface is for external
Other electronic equipments, such as external memory, mobile phone connecting line or the other mobile terminals of connection etc..
The calibration power source is a voltage circuit in parallel with high-tension line, voltage circuit by three-phase current source group with
One three-phase high-voltage is source-series to be formed；Further, three-phase current source group includes three three-phase current sources being connected in parallel,
The electric current of three exportable 3A-1000A of parallel connection；
The error meter 3 is used to obtain the electrical energy parameter of high pressure gauge to be verified and calculates high pressure to be verified according to electrical energy parameter
Table relative error γ；The electrical energy parameter includes that voltage, electric current, frequency, phase, harmonic wave, active power, reactive power, view exist
Power, power factor, one kind of active energy, reactive energy.
According to the above technical scheme it is found that being connected on three-phase and four-line high-voltage line by current loop I/V AC/DC changeover switch
Lu Zhong, voltage circuit are connected in parallel in high-tension line by high pressure V/V AC/DC changeover switch, be thus capable of measuring voltage, electric current and
The information such as frequency and power factor (PF), power and electric energy.And voltage, electric current are acquired in real time, power can be calculated in turn
Then factor calculates the other information such as power and electric energy, is finally completed the verification purpose to electric energy meter.
This application provides a kind of 10kV portable high-pressure wideband electric energy on-site calibration devices, including high pressure wideband standard
Table, calibration power source and error meter；The high pressure wideband standard scale includes high pressure V/V AC/DC changeover switch, high pressure I/V alternating current-direct current
Converter and three-phase standard scale；The calibration power source is a voltage circuit in parallel with high-tension line, and voltage circuit is by three
Phase current source group with a three-phase high-voltage is source-series forms；The present processes stability is high, function is easily achieved, and has higher
Applicability, anti-interference ability is weak when solving field-checking in the prior art, the not high problem of portability.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (7)
1. a kind of 10kV portable high-pressure wideband electric energy on-site calibrating method, which is characterized in that the described method includes:
Real load check is carried out to high pressure gauge to be verified using high pressure wideband standard scale；
Virtual load verification is carried out to high pressure gauge to be verified using calibration power source.
2. a kind of 10kV portable high-pressure wideband electric energy on-site calibrating method according to claim 1, which is characterized in that institute
It states and includes: to the real load check of high pressure gauge to be verified progress using high pressure wideband standard scale
It is respectively connected to by high pressure wideband standard scale access high-tension line in parallel with high pressure gauge to be verified, and using same error meter
High pressure wideband standard scale and high pressure gauge to be verified；
Error meter obtains the first energy value W of high pressure wideband standard scale detection respectivelyNWith the second electric energy of high pressure gauge to be verified detection
Value WX；The first energy value WNWith the second energy value WXIt include voltage, electric current, frequency, phase, harmonic wave, active power, nothing
One of function power, apparent energy, power factor, active energy, reactive energy；
Calculate high pressure gauge relative error γ to be verified.
3. a kind of 10kV portable high-pressure wideband electric energy on-site calibrating method according to claim 1, which is characterized in that institute
It states and includes: to high pressure gauge to be verified progress virtual load verification using calibration power source
Calibration power source is connected with high pressure gauge to be verified and accesses high-tension line, and standard is respectively connected to using same error meter
Power source and high pressure gauge to be verified；
Calibration power source exports preset power parameter, obtains theoretical energy value W according to the power parameter of outputM；
Error meter obtains the third energy value W of high pressure gauge detection to be verifiedY；The theory energy value WMWith third energy value WY?
Including voltage, electric current, frequency, phase, harmonic wave, active power, reactive power, apparent energy, power factor, active energy, nothing
One of function electric energy；
Calculate high pressure gauge relative error γ to be verified.
4. a kind of 10kV portable high-pressure wideband electric energy on-site calibration device, which is characterized in that described device includes high pressure wideband
Standard scale, calibration power source and error meter；Wherein, the high pressure wideband standard scale is used to carry out high pressure gauge to be verified real load
Verification；The calibration power source is used to carry out virtual load verification to high pressure gauge to be verified；
The high pressure wideband standard scale includes high pressure V/V AC/DC changeover switch, high pressure I/V AC/DC changeover switch and three-phase standard
Table；High-tension line is accessed in one end of the high pressure V/V AC/DC changeover switch, is converted into high voltage signal using resistive-capacitive voltage divider low
Voltage signal；The other end of the high pressure V/V AC/DC changeover switch is connect with three-phase standard scale；The high pressure I/V alternating current-direct current turns
Parallel operation is set on high-tension line, and is connect with three-phase standard scale, for high current signal to be converted into small voltage signal；
The calibration power source is a voltage circuit in parallel with high-tension line, and voltage circuit is by three-phase current source group and one
Three-phase high-voltage is source-series to be formed；
The error meter is used to obtain the electrical energy parameter of high pressure gauge to be verified and calculates high pressure gauge phase to be verified according to electrical energy parameter
To error γ；The electrical energy parameter include voltage, electric current, frequency, phase, harmonic wave, active power, reactive power, apparent energy,
One kind of power factor, active energy, reactive energy.
5. a kind of 10kV portable high-pressure wideband electric energy on-site calibration device according to claim 4, which is characterized in that institute
Stating three-phase current source group includes three three-phase current sources being connected in parallel.
6. a kind of 10kV portable high-pressure wideband electric energy on-site calibration device according to claim 4, which is characterized in that institute
Stating three-phase standard scale includes three-phase divider, high-precision A/D collector, FPGA synchronizing device and microprocessor；
The three-phase divider is for receiving the letter that high pressure V/V AC/DC changeover switch and high pressure I/V AC/DC changeover switch measure
Number；
The high-precision A/D collector for acquiring signal in real time；
The FPGA synchronizing device is used to synchronize the A/D acquisition signal of multichannel；
The microprocessor is used to transfer synchronization signal and display operation.
7. a kind of 10kV portable high-pressure wideband electric energy on-site calibration device according to claim 6, which is characterized in that institute
Stating microprocessor includes high definition touch screen, keyboard and communication interface.
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| CN201910342440.8A CN110161448A (en) | 2019-04-26 | 2019-04-26 | A kind of 10kV portable high-pressure wideband electric energy on-site calibrating method and device |
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| CN114545068A (en) * | 2021-12-22 | 2022-05-27 | 云南电网有限责任公司电力科学研究院 | Portable 10kV three-phase broadband power standard equipment |
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