CN107329104A - A kind of electronic mutual inductor magnitude tracing method and system of meter and composition error - Google Patents
A kind of electronic mutual inductor magnitude tracing method and system of meter and composition error Download PDFInfo
- Publication number
- CN107329104A CN107329104A CN201710557381.7A CN201710557381A CN107329104A CN 107329104 A CN107329104 A CN 107329104A CN 201710557381 A CN201710557381 A CN 201710557381A CN 107329104 A CN107329104 A CN 107329104A
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- electric energy
- energy meter
- standard
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- mutual inductor
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- G—PHYSICS
- 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
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Abstract
The invention provides a kind of meter and the electronic mutual inductor magnitude tracing method and system of composition error, described system includes standard device, tested device and comparative analysis computing device, standard device includes standard potential transformer, standard current transformer, standard electric energy meter, and tested device includes electronic type voltage transformer, electronic current mutual inductor, combining unit, digital electric energy meter.Methods described by gathering standard mutual inductor and the secondary output valve of electronic mutual inductor in real time, it is separately input to standard electric energy meter and subject electric energy meter, the output valve of standard electric energy meter and subject electric energy meter is input to comparative analysis computing device, it is analyzed by comparative analysis computing device, automatically composition error is calculated, judges whether the degree of accuracy of tested device meets regulatory requirements.Method and system proposed by the present invention provides a kind of brand-new thinking to carry out electronic mutual inductor magnitude tracing.
Description
Technical field
The present invention relates to the electronic mutual inductor magnitude tracing side in transformer field, more particularly to a kind of meter and composition error
Method and system.
Background technology
Digital transformer substation employs the digitizers such as electronic mutual inductor and hierarchical network transmission architecture, compared to
Traditional transformer station has obvious advantage in terms of reliability, security, however, due to existing electricity settlement and measuring system
It is built upon on the basis of simulation electric energy value, creates the uninterrupted chain of tracing to the source of digitalized electric energy value and simulation electric energy value
And develop related detection device, it has also become urgent problem to be solved in digital transformer substation or even intelligent grid development.
At present, country and power industry not yet distributing electronic formula ct calibrating code or calibrating standard, electronic type mutual inductance
Device magnitude tracing is still without concrete norm, if can provide, one kind is easily achieved and standard loop device can reliably trace to the source, can be accurate
Realize the system and method for work of electronic mutual inductor magnitude tracing, then, the electronic mutual inductor amount to setting up State-level
Value traceability system has important reference significance.
The content of the invention
In view of this, in order to solve the above technical problems, the present invention provides a kind of meter and the electronic mutual inductor of composition error
Magnitude tracing method and system.
The electronic mutual inductor magnitude tracing method of a kind of meter provided by the present invention and composition error, using following technology
Scheme is realized：
A kind of electronic mutual inductor magnitude tracing method of meter and composition error, including standard mutual inductor, standard electric energy meter, subject
Transformer, subject electric energy meter and comparative analysis computing device.
The secondary output valve of collection standard mutual inductor, is input to standard electric energy meter in real time, while collection subject mutual inductance in real time
The secondary output valve of device, is input to subject electric energy meter, and the output valve of standard electric energy meter and subject electric energy meter is input to score
Computing device is analysed, the output valve of two-way electric energy meter is analyzed by comparative analysis computing device, comprehensive mistake is calculated automatically
Difference, judges whether the tested device degree of accuracy meets regulatory requirements.
When standard mutual inductor is standard potential transformer, subject transformer is subject electronic type voltage transformer, subject
Electric energy meter is digital electric energy meter, and the current input value of standard electric energy meter and subject electric energy meter is given by reference signal generator.
When standard mutual inductor is standard current transformer, tested device is subject electronic current mutual inductor, subject electricity
Energy table is digital electric energy meter, and the voltage input levels of standard electric energy meter and subject electric energy meter are given by reference signal generator.
It is preferred that, calculated by comparative analysis computing device through standard electric energy meter electricity after a while and subject electric energy
Table electricity, and composition error is calculated as follows.
Composition error=(q-Q)/Q × 100%
Wherein：Q is standard electric energy meter electricity, and q is subject electric energy meter electricity.
The present invention further provides a kind of meter and the electronic mutual inductor magnitude tracing system of composition error, using following skill
Art scheme：
It is a kind of count and composition error electronic mutual inductor magnitude tracing system, including standard device, tested device and to score
Analyse computing device.
Its standard equipment includes standard mutual inductor, standard electric energy meter, and tested device includes subject transformer, subject electric energy
Table；Standard mutual inductor is once connected with subject transformer, and the secondary output of standard mutual inductor is connected to standard electric energy meter, is tested mutual inductance
The secondary output of device is connected to subject electric energy meter, and the output of standard electric energy meter and subject electric energy meter is connected to comparative analysis calculating and set
Standby, comparative analysis computing device is used to the output valve of two-way electric energy meter is analyzed, and can export tested device includes
Whether the degree of accuracy, composition error meet the parameter and information of requirement.
Standard mutual inductor includes standard potential transformer/or standard current transformer, and subject transformer includes subject electronics
Formula voltage transformer and/or subject electronic current mutual inductor, subject electric energy meter is digital electric energy meter；Also include standard signal
Generator, reference signal generator is respectively connected with standard electric energy meter, subject electric energy meter, for electric to standard electric energy meter and subject
Can table outputting standard current signal or standard voltage signal.
It is preferred that, in addition to combining unit, the reference signal generator, subject transformer by the combining unit with
It is tested electric energy meter to be connected, the combining unit is also connected with comparative analysis computing device.
It is preferred that, the TCP that the combining unit with subject electric energy meter can include IEC61850-9-2 agreements is communicated.
It is preferred that standard electric energy meters output through support include 485 interfaces and comparative analysis meter of 97,07 electric energy meter stipulations
Equipment is calculated to be connected.
It is preferred that, comparative analysis computing device includes comprehensive error computation unit, the standard for calculating a period of time
Electric energy meter electricity and subject electric energy meter electricity, and composition error is calculated as follows.
Composition error=(q-Q)/Q × 100%
Wherein：Q is standard electric energy meter electricity, and q is subject electric energy meter electricity.
Beneficial effects of the present invention：It is easily achieved and standard loop device can reliably traces to the source, can accurately realizes that electronic type is mutual
Sensor magnitude tracing, has important reference significance to the electronic mutual inductor magnitude tracing system for setting up State-level.
Brief description of the drawings
Fig. 1, the structural representation of method and system proposed by the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description：
As shown in figure 1, the implementation of the electronic mutual inductor magnitude tracing method of a kind of meter provided by the present invention and composition error
Example：
A kind of electronic mutual inductor magnitude tracing method of meter and composition error, including standard mutual inductor, standard electric energy meter, subject
Transformer, subject electric energy meter and comparative analysis computing device.
The secondary output valve of collection standard mutual inductor, is input to standard electric energy meter in real time, while collection subject mutual inductance in real time
The secondary output valve of device, is input to subject electric energy meter, the output valve input comparative analysis of standard electric energy meter and subject electric energy meter
Computing device, is analyzed to the output valve of two-way electric energy meter by comparative analysis computing device, composition error is calculated automatically,
Judge whether the degree of accuracy of tested device meets regulatory requirements.
When carrying out electronic type voltage transformer magnitude tracing, standard mutual inductor is standard potential transformer, is tested mutual inductance
Device is subject electronic type voltage transformer, and subject electric energy meter is digital electric energy meter, standard potential transformer and subject electronic type
Voltage transformer is once connected, and boosted equipment rises to primary voltage value, the electric current input of standard electric energy meter and subject electric energy meter
Value is given by reference signal generator.
When carrying out electronic current mutual inductor magnitude tracing, when standard mutual inductor is standard current transformer, subject is set
Standby is subject electronic current mutual inductor, and subject electric energy meter is digital electric energy meter, standard current transformer and subject electronic type
Current transformer is once connected, and the control source of primary current value, standard electric energy meter and subject electric energy meter is risen to through flowing up equipment
Value is given by reference signal generator.
Introduce composition error concept, the i.e. the composition error not electric energy metrical such as transformer or electric energy meter loop single equipment
Error, but include whole electric energy metering secondary coop composition error.Standard device loop composition error includes voltage transformer
Error, reference signal generator error, current transformer error, standard electric energy meter error and secondary circuit voltage drop error；Subject
Equipment loop composition error includes electronic type voltage transformer error, reference signal generator error, electronic current mutual inductor
Error, combining unit error and subject digital electric power Watch Error.
When carrying out electronic mutual inductor magnitude tracing, it is considered to composition error influence amount, by two hours or multiple small
When a period of time after, comparative analysis computing device takes standard electric energy meter electricity Q and digital electric energy meter electricity q, then the electronics
Formula voltage transformer composition error is (q-Q)/Q × 100%, for 0.2 step voltage transformer, it is desirable to composition error is not more than ±
0.2%。
Comprehensive error computation formula：Composition error=(q-Q)/Q × 100%, wherein：Q is standard electric energy meter electricity, and q is quilt
Try electric energy meter electricity.
As shown in figure 1, the electronic mutual inductor magnitude tracing system of a kind of meter provided by the present invention and composition error
Embodiment：
The electronic mutual inductor magnitude tracing system of a kind of meter and composition error, including standard device, tested device, comparative analysis
Computing device, combining unit, reference signal generator, its standard equipment include standard mutual inductor, standard electric energy meter, and subject is set
Standby to include subject transformer, subject electric energy meter, subject electric energy meter is digital electric energy meter, and it is mutual that standard mutual inductor includes normal voltage
Sensor and standard current transformer, comparative analysis computing device include comprehensive error computation unit.
Standard mutual inductor is once connected with subject transformer；The secondary output of standard mutual inductor is connected to standard electric energy meter, mark
485 interfaces of the output of quasi- electric energy meter through supporting to include 97,07 electric energy meter stipulations are connected with comparative analysis computing device；Subject is mutual
The secondary output of sensor is connected to subject electric energy meter by combining unit, and the output of subject electric energy meter is connected to comparative analysis calculating and set
It is standby；Reference signal generator is connected by combining unit with subject electric energy meter；Described combining unit is also calculated with comparative analysis
Equipment is connected.
The TCP that described combining unit with subject electric energy meter can include IEC61850-9-2 agreements is communicated.
When carrying out electronic type voltage transformer magnitude tracing, standard potential transformer and subject electronic type voltage transformer
Once connect, boosted equipment rises to primary voltage value, the secondary output of standard potential transformer is connected to standard electric by wiring
Energy table voltage input end, the secondary output for being tested electronic type voltage transformer passes through biography after combining unit progress conversion signal synchronization
The current input value of the defeated voltage input end to subject electric energy meter, standard electric energy meter and subject electric energy meter is by reference signal generator
It is given.Wherein, the standard current signal that the current terminal input reference signal generator of standard electric energy meter is sent, while standard is believed
Standard digital amount enters combining unit to number generator hair instead of digital current transducer sampled value all the way, and is born by combining unit
The subject electronic type voltage transformer secondary voltage collection capacity of duty and front end is synchronous, is then transmit to subject digital electric energy meter.
The output valve of two-way electric energy meter is input to comparative analysis computing device in real time, by comparative analysis computing device to two-way electric energy meter
Output valve is analyzed, and export subject electronic type voltage transformer include the degree of accuracy, composition error, grade, whether
Meet the parameters such as regulatory requirements and information.
When carrying out electronic current mutual inductor magnitude tracing, standard current transformer and subject electronic current mutual inductor
Once connect, rise to primary current value through flowing up equipment, the secondary output of standard current transformer is connected to standard electric by wiring
Energy table current input terminal, the secondary output of subject electronic current pressure transformer passes through combining unit and transmitted after signal synchronization
To the current input terminal of subject electric energy meter, the voltage input levels of standard electric energy meter and subject electric energy meter are given by reference signal generator
It is fixed.Wherein, the standard voltage signal that the voltage terminal input reference signal generator of standard electric energy meter is sent, while standard signal
Standard digital amount enters combining unit to generator hair instead of digital voltage mutual inductor sample value all the way, and is responsible for by combining unit
It is synchronous with the subject electronic current mutual inductor secondary current collection capacity of front end, it is then transmit to subject digital electric energy meter.Two
The output valve of road electric energy meter is input to comparative analysis computing device in real time, by comparative analysis computing device to the defeated of two-way electric energy meter
Go out value to be analyzed, and export subject electronic current mutual inductor include the degree of accuracy, it is composition error, grade, whether full
The parameters such as sufficient regulatory requirements and information.
That reference signal generator gives and the voltage from subject transformer secondary acquisition or current sampling data entrance
After combining unit, carry out sampled data and the correlation combiner in sampling time in combining unit, and by agreement communication protocol with
Data frame（Including FT3 or 61850-9-1/2）Form continuously transmit to digital electric energy meter.It is another to go back, the effect of combining unit
The voltage and current amount time synchronized of input can be ensured, while comparative analysis equipment also has time synchronized function.
The standard electric energy meter electricity of a period of time can be calculated than the comprehensive error computation unit in analysis computing device
With subject electric energy meter electricity, and composition error is calculated as follows.
Composition error=(q-Q)/Q × 100%, wherein：Q is standard electric energy meter electricity, and q is subject electric energy meter electricity.
The present invention is easily achieved and standard loop device can reliably trace to the source, and can accurately realize that electronic mutual inductor value traces back
Source, has important reference significance to the electronic mutual inductor magnitude tracing system for setting up State-level.
The statement carried out by preferred embodiment to the main principle of the present invention and spirit is these are only, is not limited to
The present invention, for those skilled in the art, the present invention can have a various modifications and variations, all spirit in the present invention and
Any modification, equivalent substitution and improvements made within principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of electronic mutual inductor magnitude tracing method of meter and composition error, including standard mutual inductor, standard electric energy meter, quilt
Transformer, subject electric energy meter and comparative analysis computing device are tried, it is characterized in that：
The secondary output valve of collection standard mutual inductor, is input to standard electric energy meter in real time, while collection is tested transformer in real time
Secondary output valve, is input to subject electric energy meter, and the output valve of standard electric energy meter and subject electric energy meter is input to comparative analysis meter
Equipment is calculated, the output valve of two-way electric energy meter is analyzed by comparative analysis computing device, composition error is calculated automatically, is sentenced
Whether the disconnected tested device degree of accuracy meets regulatory requirements.
2. the electronic mutual inductor magnitude tracing method of a kind of meter as claimed in claim 1 and composition error, it is characterized in that,
Described standard mutual inductor is standard potential transformer, and described subject transformer is subject electronic type voltage transformer, described
Subject electric energy meter be digital electric energy meter, the current input value of described standard electric energy meter and subject electric energy meter is by standard signal
Generator gives.
3. the electronic mutual inductor magnitude tracing method of a kind of meter as claimed in claim 1 and composition error, it is characterized in that,
Described standard mutual inductor is standard current transformer, and described tested device is subject electronic current mutual inductor, described
Subject electric energy meter is digital electric energy meter, and described standard electric energy meter and the voltage input levels of subject electric energy meter are sent out by standard signal
Raw device gives.
4. a kind of electronic mutual inductor magnitude tracing method of the meter and composition error as described in one of claim 1-3, it is special
Levying is, is calculated by comparative analysis computing device through standard electric energy meter electricity after a while and subject electric energy meter electricity, and
Composition error is calculated as follows：
Composition error=(q-Q)/Q × 100%, wherein：Q is standard electric energy meter electricity, and q is subject electric energy meter electricity.
5. the electronic mutual inductor magnitude tracing system of a kind of meter and composition error, including standard device, tested device and contrast
Computing device is analyzed, it is characterized in that：The standard device includes standard mutual inductor, standard electric energy meter, and the tested device includes
It is tested transformer, subject electric energy meter；The standard mutual inductor is once connected with subject transformer, the secondary output of standard mutual inductor
Standard electric energy meter is connected to, the secondary output of subject transformer is connected to subject electric energy meter, the standard electric energy meter and subject electric energy meter
Output be connected to comparative analysis computing device, the comparative analysis computing device is used to carry out the output valve of two-way electric energy meter
Comparative analysis, can export parameter and information that whether tested device meets requirement including the degree of accuracy, composition error.
6. the electronic mutual inductor magnitude tracing system of a kind of meter as claimed in claim 5 and composition error, it is characterized in that,
Described standard mutual inductor includes standard potential transformer and/or standard current transformer, and described subject transformer includes quilt
Electronic type voltage transformer and/or subject electronic current mutual inductor are tried, described subject electric energy meter is digital electric energy meter；Also
Including reference signal generator, the reference signal generator and standard electric energy meter, subject electric energy meter are connected, for standard electric
Can table and subject electric energy meter outputting standard current signal or standard voltage signal.
7. the electronic mutual inductor magnitude tracing system of a kind of meter as claimed in claim 6 and composition error, it is characterized in that,
Also include combining unit, the reference signal generator, subject transformer are connected by the combining unit with subject electric energy meter,
The combining unit is also connected with comparative analysis computing device, and the combining unit can be included with subject electric energy meter
The TCP communications of IEC61850-9-2 agreements.
8. the electronic mutual inductor magnitude tracing system of a kind of meter and composition error as described in one of claim 5-7, it is special
Levying is, the output of standard electric energy meter is connected through 485 interfaces with comparative analysis computing device.
9. the electronic mutual inductor magnitude tracing system of a kind of meter and composition error as described in one of claim 5-7, it is special
Levying is, the comparative analysis computing device includes comprehensive error computation unit, the standard electric energy meter for calculating a period of time
Electricity and subject electric energy meter electricity, and composition error is calculated as follows：
Composition error=(q-Q)/Q × 100%, wherein：Q is standard electric energy meter electricity, and q is subject electric energy meter electricity.
10. the electronic mutual inductor magnitude tracing system of a kind of meter as claimed in claim 8 and composition error, it is characterized in that,
The comparative analysis computing device include comprehensive error computation unit, for calculate a period of time standard electric energy meter electricity and
Electric energy meter electricity is tested, and calculates composition error as follows：
Composition error=(q-Q)/Q × 100%, wherein：Q is standard electric energy meter electricity, and q is subject electric energy meter electricity.
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| CN201710557381.7A CN107329104A (en) | 2017-07-10 | 2017-07-10 | A kind of electronic mutual inductor magnitude tracing method and system of meter and composition error |
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| CN201710557381.7A CN107329104A (en) | 2017-07-10 | 2017-07-10 | A kind of electronic mutual inductor magnitude tracing method and system of meter and composition error |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109270482A (en) * | 2018-11-15 | 2019-01-25 | 国网河北省电力有限公司电力科学研究院 | Voltage transformer accuracy of measuring on-line evaluation method and terminal device |
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2017
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| CN203930043U (en) * | 2014-06-27 | 2014-11-05 | 国家电网公司 | A kind of digitalized electric energy measuring apparatus correcting device |
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