CN106199496A - A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter - Google Patents
A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter Download PDFInfo
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- CN106199496A CN106199496A CN201610677477.2A CN201610677477A CN106199496A CN 106199496 A CN106199496 A CN 106199496A CN 201610677477 A CN201610677477 A CN 201610677477A CN 106199496 A CN106199496 A CN 106199496A
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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
- G01R35/04—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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The electrical fast transient (eft) influence amount experimental provision of a kind of intelligent electric energy meter, including EFT signal generator, program control three-phase voltage source, program control three-phase current source, EFT coupling/isolator, coupling/decoupling network, tested electric energy meter, test of kilo watthour meter platform and electrical energy pulse line filter.The outfan of program control three-phase voltage source accesses tested electric energy meter through EFT coupling/isolator；Another outfan of program control three-phase voltage source accesses test of kilo watthour meter platform；The outfan in program control three-phase current source is coupled/and decoupling network is connected with tested electric energy meter, and another outfan in program control three-phase current source accesses test of kilo watthour meter platform；The impulse line of test of kilo watthour meter platform is connected with tested electric energy meter by electrical energy pulse line filter；EFT signal generator accesses EFT coupling/isolator.Apparatus of the present invention, efficiently solve that voltage source and current source output in experiment is unstable and tested electric energy meter calibration error easily produces the problems such as deviation；Ensure the reliability service of experimental provision of the present invention.
Description
Technical field
The present invention relates to the electrical fast transient (eft) influence amount experimental provision of a kind of intelligent electric energy meter, belong to intelligent electric energy meter
Technical field.
Background technology
The major function of intelligent electric meter is to provide the user the interface of registering one's residence of an electrical network, is responsible for entering the power consumption of user
Row metering.The metering accuracy of intelligent electric energy meter is closely related with the work on the spot environment at its place, and electrical fast transient burst is
A kind of interference signal common in electrical network, results from transient state harassing and wrecking when cutting off the action such as inductive load, relay contact spring,
Affect the accuracy of measuring of electric energy meter, operational reliability or service life.Therefore, it is necessary to the electricity carrying out intelligent electric energy meter is fast
Speed transient pulse train influence amount experiment, improves the capacity of resisting disturbance of electric energy meter.
At present, not for the Special electric Clusters experimental facilities of intelligent electric energy meter, it is all to use electrically electricity
Experiment carried out by the common apparatus of subset Electromagnetic Compatibility, and this experimental facilities and method exist following limitation: 1, real
Test complex operation, inefficiency；2, experimental result is manually determined with deviation, it is impossible to realize real-time judge when interference signal applies
The error knots modification of test specimen；3, there is impact to power source and the standard scale of experimental facilities in interference signal, and experiment accuracy is not
High；4, requirement that electrical fast transient (eft) tested by standard GB/T/T 17215.211-2006 cannot be met " in test
In, function or performance have of short duration reducing or lose to allow, but the limit that the accuracy of an instrument should specify in respective standard
In ".
The standard GB/T of electric energy meter/T 17215.321-2008 specifies: the electrical fast transient (eft) impact of electric energy meter
Amount requirement of experiment, when current value is fundamental current Ib or rated current In, power factor are 1, the error in dipping of 1 grade of electric energy meter
Knots modification is less than 4%, and the error in dipping knots modification of 2 grades of electric energy meters is less than 6%.Therefore invention is needed badly a kind of for intelligence electric energy
The electrical fast transient (eft) influence amount experimental provision of table and method, improve the accuracy and efficiency of experiment.
Summary of the invention
It is an object of the invention to, in order to overcome the limitation of existing electric energy meter Clusters experimental facilities, it is provided that
A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter.
Realize technical scheme as follows, the electrical fast transient (eft) influence amount experiment dress of a kind of intelligent electric energy meter
Put, including: EFT signal generator, program control three-phase voltage source, program control three-phase current source, EFT coupling/isolator, coupling/go
Coupling network, tested electric energy meter, test of kilo watthour meter platform and electrical energy pulse line filter.The outfan of program control three-phase voltage source is through EFT
Coupling/isolator accesses tested electric energy meter；Another outfan of program control three-phase voltage source accesses test of kilo watthour meter platform；Program control three
The outfan in phase current source is coupled/and decoupling network is connected with tested electric energy meter, another output termination in program control three-phase current source
Enter test of kilo watthour meter platform；The impulse line of test of kilo watthour meter platform is connected with tested electric energy meter by electrical energy pulse line filter；EFT believes
The output of number generator accesses EFT coupling/isolator.
Described EFT signal generator is electrical fast transient (eft) signal generator, fast for producing the electricity of impact experiment
Speed ringing pulse group congruences (EFT signal).
Described program control three-phase voltage source, for providing working reference voltage to tested electric energy meter, carries to test of kilo watthour meter platform
Power supply potential source.
Described program control three-phase current source, the fundamental current Ib needed for exporting to tested electric energy meter and rated current In,
Current source is provided to test of kilo watthour meter platform.
Described EFT coupling/isolator, passes for the electrical fast transient (eft) signal produced by EFT signal generator
It is passed on the voltage circuit of tested electric energy meter, prevents from disturbing signal to feed back in program control three-phase voltage source by pressure-wire simultaneously,
Experiment is affected greatly.
Described coupling/decoupling network, for provide between program control three-phase current source and tested electric energy meter one clean
Current circuit passage, reduces interference signal to greatest extent on program control three-phase current source and the impact of test of kilo watthour meter platform, it is ensured that
The accuracy of experimental result judgement, effectiveness.
Described tested electric energy meter is various different voltage, single three-phase intelligent electric-energy meters of current specification, tested electricity during experiment
Can and corresponding experimental line be placed on above ground reference plane on the insulating supporting of 0.1m.
Described test of kilo watthour meter platform, with electrical energy pulse line connect tested electric energy meter, by control program control three-phase voltage source and
Program control three-phase current source provides corresponding power factor to tested electric energy meter, for the mistake of electric energy meter tested during experiment with computing
Difference change value.
Described electrical energy pulse line filter, for filtering the high-frequency interferencing signal on electrical energy pulse circuit, it is ensured that calibrating is by mistake
The accuracy of difference.
The electrical fast transient (eft) influence amount experimental provision of a kind of intelligent electric energy meter is for carrying out the electricity of intelligent electric energy meter
Clusters influence amount experimental technique, specifically comprises the following steps that
(1) according to experimental provision of the present invention, checking experiment equipment connection, tested electric energy meter in connection, and experimental line one
Rise and be placed on above ground reference plane on the insulating supporting of 0.1m；
(2) control test of kilo watthour meter platform, by program control three-phase voltage source to the reference voltage of tested electric energy meter offer work, pass through
Fundamental current Ib needed for the output of program control three-phase current source and rated current In, arrange power factor is 1 simultaneously, test of kilo watthour meter
Platform calculates the error amount of tested electric energy meter；
(3) according to the requirement of standard GB/T/T 17215.211-2006 and GB/T17626.4-2008, EFT signal is set and sends out
Raw device parameter, disturbs signal, simultaneously test of kilo watthour meter platform by EFT coupling/isolator accordingly to the output of tested electric energy meter
Calculating error in dipping knots modification now, whether automatic decision is in the range of standard specifies；
(4) closing the output of EFT signal generator, the various functions that test of kilo watthour meter platform detects tested electric energy meter is the most normal,
Judge that the electrical fast transient (eft) influence amount experiment of tested electric energy meter is the most qualified eventually.
The beneficial effects of the present invention is, the experimental provision of the present invention, efficiently solve voltage source and electric current in experiment
Source exports unstable and tested electric energy meter calibration error and easily produces the problems such as deviation；Decrease interference signal to greatest extent
Impact on experimental facilities, it is ensured that the reliability service of experimental provision of the present invention；Device fully meets standard GB/T/T
17215.211-2006 the experimental configuration requirement with GB/T17626.4-2008, it is ensured that the accuracy of experimental result is with effective
Property.The experimental technique of the present invention, it is possible to realize when tested electric energy meter adds electrical fast transient (eft) signal disturbing, count in real time
Calculate error knots modification automatic decision whether in the range of standard specifies；The most tested electric energy meter only needs primary connection, experiment behaviour
Process of making is simple, quick；Without again disconnecting line after test, the various functions automatically checking tested electric energy meter is the most normal, accurate
The most quickly experimental results.
Accompanying drawing explanation
Fig. 1 is experimental provision structured flowchart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment comparison accompanying drawing, the present invention is described in detail.
As it is shown in figure 1, the electrical fast transient (eft) influence amount experimental provision of a kind of intelligent electric energy meter of the present embodiment includes:
EFT signal generator, program control three-phase voltage source, program control three-phase current source, EFT coupling/isolator, coupling/decoupling network, quilt
Survey electric energy meter, test of kilo watthour meter platform and electrical energy pulse line filter.The outfan of program control three-phase voltage source couples/decoupling through EFT
Device accesses tested electric energy meter, and another outfan of program control three-phase voltage source accesses test of kilo watthour meter platform；Program control three-phase current source
Outfan coupled/decoupling network is connected with tested electric energy meter, another outfan accesses test of kilo watthour meter platform；Test of kilo watthour meter
The impulse line of platform is connected with tested electric energy meter by electrical energy pulse line filter；The output of EFT signal generator accesses EFT coupling
Conjunction/isolator.
The experimental provision utilizing the embodiment of the present invention to provide carries out the electrical fast transient (eft) influence amount of intelligent electric energy meter
During experiment, according in standard GB/T/T 17215.211-2006 and GB/T17626.4-2008, experiment condition should be correlated with
Regulation is carried out.
Tested electric energy and corresponding experimental line should be placed on above ground reference plane on the insulating supporting of 0.1m；Other
Circuit should be tried one's best away from tested circuit, reduces the coupling between circuit to greatest extent；Plane is utilized to be not less than 1m × 1m, thickness the least
In the metallic plate (copper or aluminum) of 0.25mm as the ground reference plane of experiment, and ensure that it is reliably connected with protective grounding.Remove
Outside tested electric energy meter, whole experimental provision is put in ground reference plane.
First being not turned on the output of EFT signal generator, tested electric energy meter is when experiment, and program control three-phase voltage source passes through EFT coupling
Conjunction/isolator exports the working reference voltage of tested electric energy meter and (arranges corresponding electricity according to the specifications and models of tested electric energy meter
Pressure value), provide voltage source to test of kilo watthour meter platform simultaneously；Coupling/decoupling network is passed through to tested electric energy in program control three-phase current source
Fundamental current Ib or rated current In(needed for table output arrange corresponding electric current according to the specifications and models of tested electric energy meter
Value), provide current source to test of kilo watthour meter platform simultaneously；Test of kilo watthour meter platform, connects tested electric energy meter with electrical energy pulse line, passes through
Control program control three-phase voltage source and program control three-phase current source and provide corresponding power factor to tested electric energy meter, calculate tested electricity
The error amount of energy table.
Opening the output of EFT signal generator, arrange EFT signal generator parameter, EFT coupling/isolator is by EFT signal
The electrical fast transient (eft) signal that generator produces is transferred on the voltage circuit of tested electric energy meter, prevents from disturbing signal simultaneously
Fed back in program control three-phase voltage source by pressure-wire；Coupling/decoupling network, for program control three-phase current source and tested electric energy
One clean current circuit passage is provided between table, reduces interference signal to greatest extent to program control three-phase current source and electric energy
The impact of table check-out console；Electrical energy pulse line filter is used for filtering the high-frequency interferencing signal on electrical energy pulse circuit, it is ensured that experiment
The accuracy of result judgement, effectiveness；Test of kilo watthour meter platform calculates the error knots modification of the most tested electric energy meter.
Intelligent electric energy meter carried out by the electrical fast transient (eft) influence amount experimental provision of a kind of intelligent electric energy meter of the present embodiment
Electrical fast transient (eft) influence amount experimental technique, specifically comprise the following steps that
(1) experimental provision, checking experiment equipment connection, tested electric energy meter in connection, and experiment according to embodiments of the present invention
Circuit is placed on above ground reference plane on the insulating supporting of 0.1m together；
(2) control test of kilo watthour meter platform, by program control three-phase voltage source to the reference voltage of tested electric energy meter offer work, pass through
Fundamental current Ib needed for the output of program control three-phase current source and rated current In, arrange power factor is 1 simultaneously, test of kilo watthour meter
Platform calculates the error amount of tested electric energy meter；
(3) according to the requirement of standard GB/T/T 17215.211-2006 and GB/T17626.4-2008, EFT signal is set and sends out
Raw device parameter, disturbs signal, simultaneously test of kilo watthour meter platform by EFT coupling/isolator accordingly to the output of tested electric energy meter
Calculating error in dipping knots modification now, whether automatic decision is in the range of standard specifies；
(4) closing the output of EFT signal generator, the various functions that test of kilo watthour meter platform detects tested electric energy meter is the most normal,
Judge that the electrical fast transient (eft) influence amount experiment of tested electric energy meter is the most qualified eventually.
The experimental provision of the embodiment of the present invention, efficiently solve voltage source and current source output in experiment unstable and
Tested electric energy meter calibration error easily produces the problems such as deviation, decreases the interference signal shadow to experimental facilities to greatest extent
Ring, it is ensured that the reliability service of experimental provision of the present invention；Device fully meets standard GB/T/T 17215.211-2006 and GB/
The experimental configuration requirement of T17626.4-2008, it is ensured that the accuracy of experimental result and effectiveness；The experiment of the embodiment of the present invention
Method, it is possible to realize when tested electric energy meter adds electrical fast transient (eft) signal disturbing, calculates error knots modification also in real time
Whether automatic decision is in the range of standard specifies；The most tested electric energy meter only needs primary connection, and experimental implementation process is simple, fast
Prompt；Without again disconnecting line after test, the various functions automatically checking tested electric energy meter is the most normal, the most quickly provides experiment
Result.
Claims (6)
1. the electrical fast transient (eft) influence amount experimental provision of an intelligent electric energy meter, it is characterised in that described device includes
EFT signal generator, program control three-phase voltage source, program control three-phase current source, EFT coupling/isolator, coupling/decoupling network, quilt
Survey electric energy meter, test of kilo watthour meter platform and electrical energy pulse line filter；The outfan of program control three-phase voltage source couples/decoupling through EFT
Device accesses tested electric energy meter；Another outfan of program control three-phase voltage source accesses test of kilo watthour meter platform；Program control three-phase current source
Outfan coupled/decoupling network is connected with tested electric energy meter, another outfan in program control three-phase current source accesses electric energy meter
Check-out console；The impulse line of test of kilo watthour meter platform is connected with tested electric energy meter by electrical energy pulse line filter；EFT signal generator
Output access EFT coupling/isolator.
A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter, its feature
Being, described EFT signal generator is electrical fast transient (eft) signal generator, for producing the electricity quickly wink of impact experiment
Become pulse-burst signals.
A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter, its feature
It is, described program control three-phase voltage source, for providing working reference voltage to tested electric energy meter, provides electricity to test of kilo watthour meter platform
Potential source；
Described program control three-phase current source, the fundamental current Ib needed for exporting to tested electric energy meter and rated current In, to electricity
Current source can be provided by table check-out console.
A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter, its feature
It is, described EFT coupling/isolator, for the electrical fast transient (eft) signal that EFT signal generator produces is transferred to
On the voltage circuit of tested electric energy meter, prevent from disturbing signal to be fed back in program control three-phase voltage source by pressure-wire simultaneously.
A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter, its feature
It is, described test of kilo watthour meter platform, connects tested electric energy meter with electrical energy pulse line, by controlling program control three-phase voltage source and program control
Three-phase current source provides corresponding power factor to tested electric energy meter, and the error for electric energy meter tested during experiment with computing changes
Variate.
A kind of electrical fast transient (eft) influence amount experimental provision of intelligent electric energy meter, its feature
Being, described device, for carrying out the electrical fast transient (eft) influence amount experimental technique of intelligent electric energy meter, specifically comprises the following steps that
(1) according to experimental provision of the present invention, checking experiment equipment connection, tested electric energy meter in connection, and experimental line one
Rise and be placed on above ground reference plane on the insulating supporting of 0.1m；
(2) control test of kilo watthour meter platform, by program control three-phase voltage source to the reference voltage of tested electric energy meter offer work, pass through
Fundamental current Ib needed for the output of program control three-phase current source and rated current In, arrange power factor is 1 simultaneously, test of kilo watthour meter
Platform calculates the error amount of tested electric energy meter；
(3) according to the requirement of standard GB/T/T 17215.211-2006 and GB/T17626.4-2008, EFT signal is set and sends out
Raw device parameter, disturbs signal, simultaneously test of kilo watthour meter platform by EFT coupling/isolator accordingly to the output of tested electric energy meter
Calculating error in dipping knots modification now, whether automatic decision is in the range of standard specifies；
(4) closing the output of EFT signal generator, the various functions that test of kilo watthour meter platform detects tested electric energy meter is the most normal,
Judge that the electrical fast transient (eft) influence amount experiment of tested electric energy meter is the most qualified eventually.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907851A (en) * | 2017-11-14 | 2018-04-13 | 国网山东省电力公司电力科学研究院 | A kind of ancillary test device and method of electric energy meter EMC test |
| CN109444599A (en) * | 2018-12-06 | 2019-03-08 | 郑州云海信息技术有限公司 | A kind of system and method for eliminating electrical fast transient (eft) interference |
| CN110196363A (en) * | 2019-05-27 | 2019-09-03 | 杭州电子科技大学 | Industrial robot servo-driver detection method based on electrical fast transient (eft) |
| CN111289822A (en) * | 2020-02-28 | 2020-06-16 | 杭州电子科技大学 | Industrial robot demonstrator testing method based on electric fast transient pulse group |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110196363A (en) * | 2019-05-27 | 2019-09-03 | 杭州电子科技大学 | Industrial robot servo-driver detection method based on electrical fast transient (eft) |
| CN110196363B (en) * | 2019-05-27 | 2021-03-02 | 杭州电子科技大学 | Industrial robot servo driver detection method based on electric fast transient pulse group |
| CN111289822A (en) * | 2020-02-28 | 2020-06-16 | 杭州电子科技大学 | Industrial robot demonstrator testing method based on electric fast transient pulse group |
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