CN104597424B - A kind of optical transformer electrical energy measurement verification platform and verification method - Google Patents
A kind of optical transformer electrical energy measurement verification platform and verification method Download PDFInfo
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- CN104597424B CN104597424B CN201510006666.2A CN201510006666A CN104597424B CN 104597424 B CN104597424 B CN 104597424B CN 201510006666 A CN201510006666 A CN 201510006666A CN 104597424 B CN104597424 B CN 104597424B
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Abstract
The present invention relates to optical transformer electrical energy measurement verification platform and methods,The platform includes standard potential transformer,Standard current transformer,Optical transformer to be measured,Simulate electric energy metering device,A/d conversion device,First combining unit,First digitalized electric energy metering device,Second combining unit,Second digitalized electric energy metering device and host computer,The output terminal of standard potential transformer and standard current transformer is all connected with simulation electric energy metering device and the input terminal of a/d conversion device,The input terminal of first combining unit is connected with the output terminal of a/d conversion device,The output terminal of first combining unit connects the first digitalized electric energy metering device,Optical transformer and a/d conversion device are all connected with the second combining unit,Second combining unit connects the second digitalized electric energy metering device,Simulate electric energy metering device,First and second digitalized electric energy metering devices are connected with host computer.The platform validation precision is high, and guarantee is provided in practicing for electrical energy measurement for optical transformer.
Description
Technical field
The present invention relates to a kind of Electric Energy Metering Technology field, particularly a kind of optical transformer electrical energy measurement verification platform and
Verification method.
Background technology
In the structure of traditional electric energy metered system, the mutual inductor used is that the simulation based on electromagnetic induction principle passes
Sensor, i.e., using electromagnetic transformer, structure as shown in Figure 1 uses electromagnetic current transducer and electromagnetic potential mutual inductance
Device induces the low current proportional to primary current and voltage, small voltage from line facility to be measured, into simulation electrical energy measurement
Device carries out computing, calculates energy value.The drawback is that：With the raising of voltage class, hold during electrical energy measurement use
Easily occur second open circuit it is dangerous, easily by electromagnetic interference influence, the magnetic saturation safety problems such as bring large error, dynamic range small.
Optical transformer can solve problem above, optical transformer primary side generally use non-active operation mode, and secondary
Side forms and is optically isolated, therefore the problem of effectively prevent electromagnetic interference existing for Current Transformer Using Active Compensation；And security is good, thoroughly keeps away
The danger such as second open circuit, oil gas explosion existing for traditional mutual inductor are exempted from；Mutual inductor or optical transformer are no matter simulated, is being become
Error is required in the metrology applications of power station no more than 0.2%, optical current mutual inductor and optics electricity in current engineer application
Pressure mutual inductor has all reached 0.2% required precision, fully meets requirement of the electrical energy measurement to mutual inductor in theory, but
There is presently no verify in actual operation.
The content of the invention
The present invention for traditional electromagnetic transformer be susceptible to during electrical energy measurement use second open circuit danger,
Easily by electromagnetic interference influence, optical transformer lacks the problem of verification in electrical energy measurement use, provides a kind of optical transformer
Electrical energy measurement verification platform, is able to verify that whether optical transformer can be applied to electrical energy measurement, and verifies that precision is high, is optics
Mutual inductor provides guarantee in practicing for electrical energy measurement.The invention further relates to a kind of optical transformer electrical energy measurement authentications
Method.
Technical scheme is as follows：
A kind of optical transformer electrical energy measurement verification platform, which is characterized in that include the voltage letter of acquisition power source output
The standard potential transformer of breath, the standard current transformer of the current information of acquisition power source output and acquisition power source output
The optical transformer to be measured of information further includes simulation electric energy metering device, a/d conversion device, the first combining unit, the first number
Word electric energy metering device, the second combining unit, the second digitalized electric energy metering device and host computer, the normal voltage mutual inductance
The output terminal of device and standard current transformer be all connected with simulation electric energy metering device and a/d conversion device input terminal, described first
The input terminal of combining unit is connected with the output terminal of a/d conversion device, the first number of output terminal connection of first combining unit
The output terminal of electric energy metering device, the optical transformer and a/d conversion device is all connected with the input of the second combining unit
End, the output terminal of second combining unit connect the second digitalized electric energy metering device, the simulation electric energy metering device, the
One digitalized electric energy metering device and the second digitalized electric energy metering device are connected with host computer.
The optical current mutual inductor for the current information that the optical transformer exports for acquisition power source, the AD conversion dress
It puts including the first a/d conversion device and the second a/d conversion device, the output terminal of the standard current transformer connects the first AD conversion
The input terminal of device, the output terminal of standard potential transformer connect the input terminal of the second a/d conversion device, first AD conversion
Device and the output terminal of the second a/d conversion device are all connected with the input terminal of the first combining unit, second a/d conversion device it is defeated
Outlet is also connected with the input terminal of the second combining unit.
The optical voltage transformer for the information of voltage that the optical transformer exports for acquisition power source, the AD conversion dress
It puts including the first a/d conversion device and the second a/d conversion device, the output terminal of the standard current transformer connects the first AD conversion
The input terminal of device, the output terminal of standard potential transformer connect the input terminal of the second a/d conversion device, first AD conversion
Device and the output terminal of the second a/d conversion device are all connected with the input terminal of the first combining unit, first a/d conversion device it is defeated
Outlet is also connected with the input terminal of the second combining unit.
Further include acquisition power source output information of voltage optical voltage transformer to be measured and successively with optics electricity
Press the 3rd combining unit and the 3rd digitalized electric energy metering device of mutual inductor connection, the output terminal of the optical current mutual inductor
The input terminal of the 3rd combining unit is also connected with, the 3rd digitalized electric energy metering device is connected with host computer.
Further include acquisition power source output current information optical current mutual inductor to be measured and successively with optics electricity
The 4th combining unit and the 4th digitalized electric energy metering device of current transformer connection, the output terminal of the optical voltage transformer
The input terminal of the 4th combining unit is also connected with, the 4th digitalized electric energy metering device is connected with host computer.
GPS clock module is further included, first combining unit and the second combining unit are all connected with GPS clock module to connect
Receive pps pulse per second signal or the B code signals that GPS clock module is sent.
GPS clock module is further included, first combining unit, the second combining unit and the 3rd combining unit are all connected with
GPS clock module is to receive the pps pulse per second signal or B code signals that GPS clock module is sent.
GPS clock module is further included, first combining unit, the second combining unit and the 4th combining unit are all connected with
GPS clock module is to receive the pps pulse per second signal or B code signals that GPS clock module is sent.
A kind of optical transformer electrical energy measurement verification method, which is characterized in that pass through standard potential transformer and standard electric
Small voltage signal and simulation low current letter are simulated in output respectively after the information of voltage and current information of current transformer acquisition power source
Number, will simulation small voltage signal and simulation low current signal output to simulating electric energy metering device；Simulate small voltage signal simultaneously
It is AD converted to be respectively converted into digital voltage value and digital current by a/d conversion device with simulation low current signal
Digital voltage value and digital current values are carried out framing by the first combining unit and are sent to the first number according to standard agreement by value
Electric energy metering device；Digital value will be exported after the corresponding information of optical transformer acquisition power source to be measured, merged by second
The digital voltage value to match with the digital value of optical transformer output that unit exports the digital value and a/d conversion device or
Digital current values carry out framing, and are sent to the second digitalized electric energy metering device according to standard agreement；Then by host computer point
Three electricity of electric energy metering device, the first digitalized electric energy metering device and the second digitalized electric energy metering device Jie Shou not simulated
It can be worth, and be compared in real time, judge the continuous data of optical transformer output to be measured based on electric energy by error calculation
Whether amount is feasible.
When optical transformer to be measured is optical current mutual inductor, the electricity of optical current mutual inductor acquisition power source output
The digital voltage value of output digital current values and a/d conversion device output after stream information is into the second combining unit, by the
Digital current values and digital voltage value are carried out framing by two combining units, and are sent to the second digitalized electric energy according to standard agreement
Metering device, host computer judge whether the continuous data that the optical current mutual inductor exports is used for electrical energy measurement by error calculation
It is feasible；
When optical transformer to be measured is optical voltage transformer, the electricity of optical voltage transformer acquisition power source output
The digital voltage value that exports and the digital current values of a/d conversion device output are into the second combining unit after pressure information, by the
Digital voltage value and digital current values are carried out framing by two combining units, and are sent to the second digitalized electric energy according to standard agreement
Metering device, host computer judge whether the continuous data that the optical voltage transformer exports is used for electrical energy measurement by error calculation
It is feasible；
First combining unit and the second combining unit receive the pps pulse per second signal that GPS clock sends or B code signals cause
Standard current transformer is synchronous with the data of standard potential transformer and optical transformer to be measured.
The technique effect of the present invention is as follows：
Optical transformer electrical energy measurement verification platform provided by the invention sets standard potential transformer, normalized current mutual
Sensor and optical transformer to be measured also set up simulation electric energy metering device, a/d conversion device, the first combining unit, first
Digitalized electric energy metering device, the second combining unit, the second digitalized electric energy metering device and host computer, standard potential transformer
Gathered respectively with standard current transformer power source output voltage signal and current signal and export simulation small voltage signal and
Simulation low current signal shows energy value to electric energy metering device, simulation electric energy metering device is simulated；Small voltage letter is simulated simultaneously
Number and low current signal be AD converted to be respectively converted into digital voltage value and digital current values by a/d conversion device
Into the first combining unit, digital voltage value and digital current values are carried out framing and are sent out according to standard agreement by the first combining unit
The first digitalized electric energy metering device is sent to, the first digitalized electric energy metering device shows energy value；Optical transformer to be measured
The output information for gathering power source simultaneously exports digital value and is sent into the second combining unit, and the second combining unit is by the digital value and AD
The digital voltage value to match with the digital value of optical transformer output or digital current values of conversion equipment output carry out framing, and
The second digitalized electric energy metering device is sent to according to standard agreement, the second digitalized electric energy metering device shows energy value, most
Whole host computer receives simulation electric energy metering device, the first digitalized electric energy metering device and the second digitalized electric energy metering dress respectively
Three energy values put, are compared in real time by host computer, and the meter of optical transformer output to be measured is judged by error calculation
It is whether feasible for electrical energy measurement to measure data.The platform make use of the recognized standard voltage transformer and standard current transformer
Simulation output result and digital output results and coordinate optical transformer to be measured digitized electrical energy measurement export result into
Row compares, and each value of comparison includes current value and voltage value, if the electrical energy measurement output result and mark of optical transformer
Error between quasi- mutual inductor Electric energy measurement is less than the error of simulation electrical energy measurement at present, then can verify that optical transformer is complete
Electrical energy measurement is can be applied to entirely, by setting the verification platform of the present invention, whether verification optical transformer can be applied to electric energy
Metering avoids traditional electromagnetic transformer and second open circuit danger, Yi Shou electricity is susceptible to during electrical energy measurement use
The safety problem that magnetic disturbance influences also solves the problem of current optical transformer lacks verification in electrical energy measurement use, and
And it is simple in structure, using flexible, verification precision is high, and guarantee is provided in practicing for electrical energy measurement for optical transformer.
A/d conversion device can also be one comprising to simulation small voltage signal and simulation low current signal progress modulus turn
The device changed can also be substituted using the first a/d conversion device and the second a/d conversion device, and the first a/d conversion device carries out mould
Intend the analog-to-digital conversion of low current signal so as to obtain digital current values, the second a/d conversion device carries out the mould of simulation small voltage signal
Number is converted to obtain digital voltage value.When optical transformer to be measured is optical current mutual inductor, optical current mutual inductor
Digital current values are exported into the second combining unit after gathering the current information of power source output, while the second a/d conversion device obtains
For the digital voltage value arrived also into the second combining unit, digital current values and digital voltage value are carried out group by the second combining unit
Frame, and the second digitalized electric energy metering device is sent to according to standard agreement, host computer judges optics electricity by error calculation
Whether the continuous data of current transformer output is feasible for electrical energy measurement.
By the verification platform of the present invention after optical current mutual inductor electrical energy measurement verification, can further it carry out
The electrical energy measurement verification of optical voltage transformer, optical current mutual inductor can be as the base of optical voltage transformer electrical energy measurement
Plinth.The 3rd combining unit being connected with optical voltage transformer and the 3rd digitalized electric energy metering device, optics to be measured are set
Digital voltage value, which is exported, after the information of voltage of voltage transformer acquisition power source output enters the 3rd combining unit, it has been verified that after
The digital current values of optical current mutual inductor output can input to the 3rd combining unit, the 3rd combining unit is by digital voltage
Value and digital current values carry out framing, and are sent to the 3rd digitalized electric energy metering device according to standard agreement, and host computer receives
Simulate four energy values of electric energy metering device and first, second, and third digitalized electric energy metering device, by host computer into
Row relatively, judges whether the continuous data that optical voltage transformer to be measured exports is used for electrical energy measurement by error calculation in real time
It is feasible.
Similarly, optical transformer electrical energy measurement verification platform of the invention can also complete optical transformer to be measured as light
Accurate electrical energy measurement verification during voltage transformer is learned, and after optical voltage transformer is verified, further in the base of the structure
On plinth, increase optical current mutual inductor to be measured and the 4th combining unit and the 4th digitalized electric energy metering device, so it is complete
Electrical energy measurement into optical current mutual inductor is verified.
Optical transformer electrical energy measurement verification method of the present invention is verified with above-mentioned optical transformer electrical energy measurement
Platform is corresponding, can finally judge whether the continuous data of optical transformer output to be measured is feasible for electrical energy measurement,
The accurate validation of optical transformer electrical energy measurement is completed, current optical transformer is solved and lacks verification in electrical energy measurement use
The problem of.
Description of the drawings
Fig. 1 is the structure diagram of traditional electric energy metered system.
Fig. 2 is the first preferred structure schematic diagram of optical transformer electrical energy measurement verification platform of the present invention.
Fig. 3 is second of preferred structure schematic diagram of optical transformer electrical energy measurement verification platform of the present invention.
Fig. 4 is the third preferred structure schematic diagram of optical transformer electrical energy measurement verification platform of the present invention.
Fig. 5 is the 4th kind of preferred structure schematic diagram of optical transformer electrical energy measurement verification platform of the present invention.
Specific embodiment
The present invention will be described below in conjunction with the accompanying drawings.
The present invention relates to a kind of optical transformer electrical energy measurement verification platforms, and it is mutual can to carry out optical transformer such as optical current
The electrical energy measurement of sensor and optical voltage transformer is verified.Fig. 2 is the first preferred structure schematic diagram of verification platform of the present invention,
It can be appreciated that it is the preferred structure schematic diagram of optical current mutual inductor electrical energy measurement verification platform.The verification platform includes adopting
Collect the normalized current mutual inductance of the standard potential transformer of the information of voltage of power source output, the current information that acquisition power source exports
Device and acquisition power source output current information optical current mutual inductor to be measured, further include simulation electric energy metering device,
A/d conversion device, the first combining unit, the first digitalized electric energy metering device, the second combining unit, the second digitalized electric energy meter
Device and host computer are measured, a/d conversion device includes the first a/d conversion device and the second a/d conversion device, standard current transformer
The input terminal of output terminal connection simulation electric energy metering device and the first a/d conversion device, the output terminal connection of standard potential transformer
Simulate electric energy metering device and the input terminal of the second a/d conversion device, the output of the first a/d conversion device and the second a/d conversion device
End is all connected with the input terminal of the first combining unit, and the output terminal of the first combining unit connects the first digitalized electric energy metering device,
Optical current mutual inductor and the output terminal of the second a/d conversion device are all connected with the input terminal of the second combining unit, and second merges list
The output terminal of member connects the second digitalized electric energy metering device, simulation electric energy metering device, the first digitalized electric energy metering device
It is connected with the second digitalized electric energy metering device with host computer.
In embodiment illustrated in fig. 2, power source output current and voltage signal, it is defeated that standard current transformer gathers current information
Go out to simulate low current signal Ia and simulation electric energy metering device is accessed by cable；Standard potential transformer collection voltages information exports
It simulates small voltage signal U and simulation electric energy metering device is accessed by cable, simulation electric energy metering device shows energy value Ea.Standard
Due to being calibration equipment, required precision is than the transformer precision higher grade of practical application for current transformer and voltage transformer,
Therefore be High-precision standard mutual inductor, precision was better than for 0.1% (or perhaps measurement error is less than or equal to 0.1%).
Standard current transformer acquisition current information output simulation low current signal Ia accesses the first AD conversion by cable
Device, the first a/d conversion device are converted into digital current values Ib by low current signal Ia is simulated, and being sent into first by optical cable merges
Unit；Standard potential transformer collection voltages information output simulation small voltage signal U accesses the second a/d conversion device by cable,
Analog voltage signal U is converted into digital voltage value Ud1 by the second a/d conversion device, and the first combining unit is sent by optical cable；The
Digital voltage value Ud1 and digital current values Ib is carried out framing by one combining unit, and the first digitlization is sent to according to standard agreement
Electric energy metering device, the first digitalized electric energy metering device show energy value Eb.It is preferred that the first a/d conversion device used and
The precision of two a/d conversion devices is better than 0.05%, and the analog-to-digital conversion delivery outlet of the second a/d conversion device is no less than two；The two
A/d conversion device can also be replaced with an a/d conversion device comprising analog voltage and analog current analog-to-digital conversion, then its modulus
Conversion delivery outlet is no less than three.Each combining unit can be used the hardware module based on FPGA technology and realize, combining unit is main
Including：Data sampling module, sampled-data processing module, data outputting module additionally can include Synchronous Sampling Pulse series
Generation module.Combining unit is the hardware product of existing maturation.
Optical current mutual inductor acquisition current information output digital current values Ic is sent into second by transmission cable and merges list
Member；Standard potential transformer collection voltages information output simulation small voltage signal U accesses the second a/d conversion device by cable, the
Two a/d conversion devices are converted into digital voltage value Ud2 by small voltage signal U is simulated, and being sent into second by communications optical cable merges list
Member；Digital voltage value Ud2 and digital current values Ic is carried out framing by the second combining unit, and the second number is sent to according to standard agreement
Word electric energy metering device, the second digitalized electric energy metering device output energy value Ec.Each digitalized electric energy metering device communication
Agreement preferably receives IEC61850-9-2 agreements.
In order to ensure data sampling synchronization, i.e. standard current transformer, standard potential transformer and optical current mutual inductor
Measurement data be synchronization, which also sets up GPS clock module, the first combining unit and the second combining unit
GPS clock module is all connected with to receive the PPS pps pulse per second signals or B code signals that GPS clock module is sent.
The electrical energy measurement unit interval is T (usual T>10 minutes).In three electric energy meters of t1 moment (simulation electrical energy measurement dress
Put, the first digitalized electric energy metering device and the second digitalized electric energy metering device) output valve be Ea (t1), Eb (t1), Ec
(t1)；Continuous power output is more than to write down three electric energy meter output valve Ea (t2) of t2 moment after T time for the t2 moment, Eb (t2),
Ec(t2)；Then the energy value output between t1~t2 is Ea=Ea (t2)-Ea (t1), Eb=Eb (t2)-Eb (t1), Ec=Ec
(t2)-Eb(t1).The output result of three electric energy meters attaches markers or counter information, and host computer is downloaded to by data cable,
Compared in real time on host computer, so as to ensure to do the data that the energy value compared is the same period.As shown in Fig. 2, Ea
Only has the error that analog-to-digital conversion is brought between Eb.When | Ec-Ea |<0.7%Ea or | Ec-Eb |<During 0.7%Eb, show optics
The continuous data of current transformer output is feasible for electrical energy measurement.
Technical scheme make use of the output result of simulation electrical energy measurement more generally acknowledged at present and digitlization electricity
The output result that can be measured is compared.If optical transformer electrical energy measurement exports result and standard mutual inductor electrical energy measurement knot
Difference between fruit be less than 0.7% (error of simulation electrical energy measurement is 0.7% at present, comprising analog current mutual inductor 0.2%,
0.3%) analog voltage mutual inductor 0.2%, cable transmission are lost, then can verify that optical transformer is fully applicable to electric energy meter
Amount.
Fig. 3 is second of preferred structure schematic diagram of verification platform of the present invention, it is understood that be optical voltage mutual inductance
The preferred structure schematic diagram of device electrical energy measurement verification platform.The verification platform includes the mark of the information of voltage of acquisition power source output
Quasi- voltage transformer, the standard current transformer of current information of acquisition power source output and the voltage of acquisition power source output
The optical voltage transformer to be measured of information further includes simulation electric energy metering device, a/d conversion device, the first combining unit, the
One digitalized electric energy metering device, the second combining unit, the second digitalized electric energy metering device and host computer, a/d conversion device bag
Include the first a/d conversion device and the second a/d conversion device, the output terminal connection simulation electric energy metering device of standard current transformer and
The input terminal of first a/d conversion device, the output terminal connection simulation electric energy metering device of standard potential transformer and the second AD conversion
The output terminal of the input terminal of device, the first a/d conversion device and the second a/d conversion device is all connected with the input of the first combining unit
End, the output terminal of the first combining unit connect the first digitalized electric energy metering device, and optical current mutual inductor and the first AD turn
The output terminal of changing device is all connected with the input terminal of the second combining unit, output terminal connection the second digitlization electricity of the second combining unit
Energy metering device, simulation electric energy metering device, the first digitalized electric energy metering device and the second digitalized electric energy metering device are equal
It is connected with host computer.
Embodiment illustrated in fig. 3 carries out the electrical energy measurement verification of optical voltage transformer, on the basis of embodiment illustrated in fig. 2
Optical current mutual inductor is replaced with into optical voltage transformer, and the output of the second a/d conversion device shown in Fig. 2 is sent into the
Two combining units, which replace with, send the output of the first a/d conversion device into the second combining unit.Optical voltage transformer collection voltages
Information exports digital voltage value Ud and is sent into the second combining unit by transmission cable；Standard current transformer acquisition current information is defeated
Go out to simulate low current signal Ia, digital current values Ib is converted by the first a/d conversion device, is sent into the second combining unit；Second
Digital voltage value Ud and digital current values Ib is carried out framing by combining unit, and the second digitalized electric energy is sent to according to standard agreement
Metering device, the second digitalized electric energy metering device show energy value Ec.When | Ec-Ea |<0.7%Ea or | Ec-Eb |<0.7%
During Eb, it is feasible to show that the continuous data of optical voltage transformer output is used for electrical energy measurement.So as to can verify that electrical energy measurement
Full optics solve method feasibility.
The electrical energy measurement that optical voltage transformer is carried out by the optical transformer electrical energy measurement verification platform of the present invention is tested
During card, it can also verify that optical voltage transformer is applied to the feasible of electrical energy measurement by the third preferred structure shown in Fig. 4
Property.The embodiment is the optics to be measured for the information of voltage that acquisition power source output is added on the basis of structure shown in Fig. 2
Voltage transformer and the 3rd combining unit being connected successively with optical voltage transformer and the 3rd digitalized electric energy metering dress
Put, the output terminal of optical current mutual inductor is also connected with the input terminal of the 3rd combining unit, the 3rd digitalized electric energy metering device with
Host computer is connected.The program can be understood as after optical current mutual inductor is had verified that using the optical current mutual inductor as base
Plinth further verifies optical voltage transformer.Optical voltage transformer collection voltages information output digital voltage value Ud3 passes through light
Cable is sent into the 3rd combining unit；Optical current mutual inductor acquisition current information output digital current values Ic is sent by transmission cable
3rd combining unit；Digital voltage value Ud3 and digital current values Ic is carried out framing by the 3rd combining unit, is sent out according to standard agreement
The 3rd digitalized electric energy metering device is sent to, the 3rd digitalized electric energy metering device shows energy value Ed.In order to ensure that data are adopted
Sample is synchronous, and the first combining unit, the second combining unit and the 3rd combining unit are all connected with GPS clock module to receive GPS clock
The PPS pps pulse per second signals or B code signals that module is sent.Four electric energy meters (simulation electric energy metering device, the first digitalized electric energy meters
Amount device, the second digitalized electric energy metering device and the 3rd digitalized electric energy metering device) output result attach markers or meter
Number device information, downloads to host computer by data cable, is compared in real time on host computer.When | Ed-Ea |<0.7%Ea or |
Ed-Eb|<During 0.7%Eb, show optical current, voltage transformer output continuous data for electrical energy measurement be feasible.From
And it can verify that the full optics of electrical energy measurement and solve the feasibility of method.
Similarly, the 4th kind of preferred structure can be understood as after optical voltage transformer is had verified that with this shown in Fig. 5
Optical current mutual inductor is further verified based on optical voltage transformer.The embodiment is on the basis of structure shown in Fig. 3
Add acquisition power source output current information optical current mutual inductor to be measured and successively with optical current mutual inductor
The 4th combining unit and the 4th digitalized electric energy metering device of connection, the output terminal of optical voltage transformer are also connected with the 4th conjunction
And the input terminal of unit, the 4th digitalized electric energy metering device are connected with host computer.Optical current mutual inductor gathers current information
It exports digital current values Ic and the 4th combining unit is sent by optical cable；Optical voltage transformer collection voltages information output number electricity
Pressure value Ud is sent into the 4th combining unit by transmission cable；4th combining unit by digital current values Ic and digital voltage value Ud into
Row framing is sent to the 4th digitalized electric energy metering device, the 4th digitalized electric energy metering device display electricity according to standard agreement
It can value Ed.In order to ensure data sampling synchronization, the first combining unit, the second combining unit and the 4th combining unit are all connected with GPS
Clock module is to receive the PPS pps pulse per second signals or B code signals that GPS clock module is sent.Four electric energy meter (simulation electrical energy measurements
Device, the first digitalized electric energy metering device, the second digitalized electric energy metering device and the 4th digitalized electric energy metering device)
Output result attaches markers or counter information, downloads to host computer by data cable, is compared in real time on host computer.When
|Ed-Ea|<0.7%Ea or | Ed-Eb |<During 0.7%Eb, show that optical voltage, the continuous data of current transformer output are used for
Electrical energy measurement is feasible.So as to can verify that the full optics of electrical energy measurement solves the feasibility of method.
The invention further relates to a kind of optical transformer electrical energy measurement verification method, this method and above-mentioned optical transformer electricity
It is corresponding verification platform to be measured, it is understood that be the implementation method of optical transformer electrical energy measurement verification platform.The party
Method exports respectively after gathering the information of voltage and current information of power source by standard potential transformer and standard current transformer
Simulate small voltage signal and simulation low current signal, will simulation small voltage signal and simulation low current signal output to simulating electric energy
Metering device；Small voltage signal is simulated simultaneously and simulation low current signal is AD converted by a/d conversion device so as to respectively
Digital voltage value and digital current values are converted to, digital voltage value and digital current values are subjected to framing simultaneously by the first combining unit
The first digitalized electric energy metering device is sent to according to standard agreement；By the corresponding letter of optical transformer acquisition power source to be measured
Digital value is exported after breath, the digital value and a/d conversion device are exported by the second combining unit with optical transformer output
The digital voltage value or digital current values that digital value matches carry out framing, and are sent to the second digitalized electric energy according to standard agreement
Metering device；Then simulation electric energy metering device, the first digitalized electric energy metering device and the second number are received respectively by host computer
Three energy values of word electric energy metering device, and compared in real time, optical transformer to be measured is judged by error calculation
Whether the continuous data of output is feasible for electrical energy measurement.The concrete scheme of optical transformer electrical energy measurement verification method of the present invention
It can refer to shown in Fig. 2-Fig. 5.
As shown in Fig. 2, when optical transformer to be measured is optical current mutual inductor, optical current mutual inductor acquisition power
The digital current values and the digital voltage value of a/d conversion device output exported after the current information of source output are closed into second
And unit, digital current values and digital voltage value are subjected to framing by the second combining unit, and the is sent to according to standard agreement
Two digitalized electric energy metering devices, host computer judge that the continuous data that the optical current mutual inductor exports is used for by error calculation
Whether electrical energy measurement is feasible.As shown in figure 3, when optical transformer to be measured is optical voltage transformer, optical voltage mutual inductance
The digital voltage value and the digital current values of a/d conversion device output exported after the information of voltage of device acquisition power source output is equal
Into the second combining unit, digital voltage value and digital current values are subjected to framing by the second combining unit, and assisted according to standard
View is sent to the second digitalized electric energy metering device, and host computer judges the meter of optical voltage transformer output by error calculation
It is whether feasible for electrical energy measurement to measure data.Preferably, when can set the first combining unit and the second combining unit to receive GPS
The pps pulse per second signal or B code signals that clock is sent cause standard current transformer and standard potential transformer and optics to be measured electricity
The data of current transformer or optical voltage transformer are synchronous.It can also be with optics electricity after optical current mutual inductor is had verified that
Optical voltage transformer, scheme as shown in Figure 4 are further verified based on current transformer.Similarly, optical voltage is being had verified that
Optical current mutual inductor, scheme as shown in Figure 5 can also be further verified after mutual inductor based on the optical voltage transformer.
Optical transformer electrical energy measurement verification method of the present invention make use of the recognized standard voltage transformer and normalized current
The simulation output result and digital output results of mutual inductor simultaneously coordinate the digitized electrical energy measurement of optical transformer to be measured defeated
Go out result to be compared, if between the electrical energy measurement output result and standard mutual inductor Electric energy measurement of optical transformer
Error is less than 0.7% (error of simulation electrical energy measurement at present), then can verify that optical transformer is fully applicable to electrical energy measurement.
The accurate validation of optical transformer electrical energy measurement can be completed by the verification method of the present invention, solves current optical transformer
The problem of lacking verification in electrical energy measurement use.
It should be pointed out that specific embodiment described above can make those skilled in the art that the present invention be more fully understood
It creates, but do not limit the invention in any way is created.Therefore, although this specification referring to the drawings creates the present invention with embodiment
It makes and has been carried out being described in detail, it will be understood by those skilled in the art, however, that still can modify to the invention
Or equivalent substitution, in short, the technical solution of all spirit and scope for not departing from the invention and its improvement, should all contain
It covers among the protection domain of the invention patent.
Claims (5)
1. a kind of optical transformer electrical energy measurement verification platform, which is characterized in that include the information of voltage of acquisition power source output
Standard potential transformer, acquisition power source output current information standard current transformer and acquisition power source output letter
The optical transformer to be measured of breath further includes simulation electric energy metering device, a/d conversion device, the first combining unit, the first number
Electric energy metering device, the second combining unit, the second digitalized electric energy metering device and host computer, the standard potential transformer
Simulation electric energy metering device and the input terminal of a/d conversion device are all connected with the output terminal of standard current transformer, described first closes
And the input terminal of unit is connected with the output terminal of a/d conversion device, the first digitlization of output terminal connection of first combining unit
The output terminal of electric energy metering device, the optical transformer and a/d conversion device is all connected with the input terminal of the second combining unit,
The output terminal of second combining unit connects the second digitalized electric energy metering device, the simulation electric energy metering device, first
Digitalized electric energy metering device and the second digitalized electric energy metering device are connected with host computer；The verification platform utilizes standard
The simulation output result or digital output results of voltage transformer and standard current transformer simultaneously coordinate optical transformer to be measured
Digitized electrical energy measurement output result be compared to be applied to electrical energy measurement to the optical transformer to be measured to realize
Feasibility is verified；
When optical current mutual inductor of the optical transformer for the current information of acquisition power source output, acquisition work(is further included
The optical voltage transformer to be measured of the information of voltage of rate source output and the 3rd conjunction being connected successively with optical voltage transformer
And unit and the 3rd digitalized electric energy metering device, the output terminal of the optical current mutual inductor are also connected with the 3rd combining unit
Input terminal, the 3rd digitalized electric energy metering device are connected with host computer；Or, when the optical transformer is acquisition power source
During the optical voltage transformer of the information of voltage of output, the optics electricity to be measured of the current information of acquisition power source output is further included
Current transformer and the 4th combining unit being connected successively with optical current mutual inductor and the 4th digitalized electric energy metering device,
The output terminal of the optical voltage transformer is also connected with the input terminal of the 4th combining unit, the 4th digitalized electric energy metering dress
It puts and is connected with host computer.
2. optical transformer electrical energy measurement verification platform according to claim 1, which is characterized in that the a/d conversion device
Including the first a/d conversion device and the second a/d conversion device, the output terminal of the standard current transformer connects the first AD conversion dress
The input terminal put, the output terminal of standard potential transformer connect the input terminal of the second a/d conversion device, the first AD conversion dress
The input terminal that the first combining unit is all connected with the output terminal of the second a/d conversion device is put,
When optical current mutual inductor of the optical transformer for the current information of acquisition power source output, the 2nd AD turns
The output terminal of changing device is also connected with the input terminal of the second combining unit；When the optical transformer is the electricity of acquisition power source output
When pressing the optical voltage transformer of information, the output terminal of first a/d conversion device is also connected with the input of the second combining unit
End.
3. optical transformer electrical energy measurement verification platform according to claim 2, which is characterized in that further include GPS clock
Module, when optical current mutual inductor of the optical transformer for the current information of acquisition power source output, described first closes
And unit, the second combining unit and the 3rd combining unit are all connected with GPS clock module to receive the second arteries and veins that GPS clock module is sent
Rush signal or B code signals；When optical voltage transformer of the optical transformer for the information of voltage of acquisition power source output,
First combining unit, the second combining unit and the 4th combining unit are all connected with GPS clock module to receive GPS clock module
The pps pulse per second signal or B code signals sent.
4. a kind of optical transformer electrical energy measurement verification method, which is characterized in that pass through standard potential transformer and normalized current
Small voltage signal and simulation low current signal are simulated in output respectively after the information of voltage and current information of mutual inductor acquisition power source,
Will simulation small voltage signal and simulation low current signal output to simulating electric energy metering device；Simulate small voltage signal and mould simultaneously
Intend low current signal to be AD converted so as to be respectively converted into digital voltage value and digital current values by a/d conversion device, by
Digital voltage value and digital current values are carried out framing and are sent to the first digitlization electricity according to standard agreement by the first combining unit
It can metering device；Digital value will be exported after the corresponding information of optical transformer acquisition power source to be measured, by the second combining unit
The digital voltage value to match with the digital value of optical transformer output or number that the digital value and a/d conversion device are exported
Current value carries out framing, and is sent to the second digitalized electric energy metering device according to standard agreement；Then connect respectively by host computer
Receive three electric energy of simulation electric energy metering device, the first digitalized electric energy metering device and the second digitalized electric energy metering device
Value, and using the simulation output result or digital output results of standard potential transformer and standard current transformer and coordinate to be measured
Optical transformer digitized electrical energy measurement output result compared in real time, optics to be measured is judged by error calculation
Whether the continuous data of mutual inductor output is feasible for electrical energy measurement；
When optical current mutual inductor of the optical transformer for the current information of acquisition power source output, acquisition work(is further included
The optical voltage transformer to be measured of the information of voltage of rate source output and the 3rd conjunction being connected successively with optical voltage transformer
And unit and the 3rd digitalized electric energy metering device, the output terminal of the optical current mutual inductor are also connected with the 3rd combining unit
Input terminal, the 3rd digitalized electric energy metering device are connected with host computer, after optical current mutual inductor is had verified that also with
Optical voltage transformer is further verified based on the optical current mutual inductor；Or, when the optical transformer is acquisition power
During the optical voltage transformer of the information of voltage of source output, the optics to be measured of the current information of acquisition power source output is further included
Current transformer and the 4th combining unit being connected successively with optical current mutual inductor and the 4th digitalized electric energy metering dress
It puts, the output terminal of the optical voltage transformer is also connected with the input terminal of the 4th combining unit, the 4th digitalized electric energy meter
Amount device is connected with host computer, after optical voltage transformer is had verified that also based on the optical voltage transformer further
Verify optical current mutual inductor.
5. optical transformer electrical energy measurement verification method according to claim 4, which is characterized in that mutual in optics to be measured
When sensor is optical current mutual inductor, the output digital current after the current information of optical current mutual inductor acquisition power source output
Value and the digital voltage value of a/d conversion device output are into the second combining unit, by the second combining unit by digital current values
Framing is carried out with digital voltage value, and the second digitalized electric energy metering device is sent to according to standard agreement, host computer passes through mistake
Difference, which calculates, judges whether the continuous data of optical current mutual inductor output is feasible for electrical energy measurement；
When optical transformer to be measured is optical voltage transformer, the voltage letter of optical voltage transformer acquisition power source output
The digital current values of digital voltage value and the a/d conversion device output exported after breath are closed into the second combining unit by second
And digital voltage value and digital current values are carried out framing by unit, and it is sent to the metering of the second digitalized electric energy according to standard agreement
Device, host computer judge that the continuous data that the optical voltage transformer exports whether may be used for electrical energy measurement by error calculation
Row；
First combining unit and the second combining unit receive the pps pulse per second signal that GPS clock sends or B code signals cause standard
Current transformer is synchronous with the data of standard potential transformer and optical transformer to be measured.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104280607B (en) * | 2014-05-14 | 2017-07-28 | 贵州电力试验研究院 | A kind of data syn-chronization framing device of digital transformer substation independent measure system |
| CN105510859A (en) * | 2016-01-28 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | System and method for evaluating electronic transformer |
| CN106526520B (en) * | 2016-11-10 | 2019-12-06 | 广东电网有限责任公司电力科学研究院 | optical current transformer light source fluctuation interference test system |
| CN109375139B (en) * | 2018-11-06 | 2020-11-27 | 国网内蒙古东部电力有限公司电力科学研究院 | Device and method for automatically testing optical fiber current transformer |
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