CN106959426B - A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device - Google Patents
A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device Download PDFInfo
- Publication number
- CN106959426B CN106959426B CN201710161840.XA CN201710161840A CN106959426B CN 106959426 B CN106959426 B CN 106959426B CN 201710161840 A CN201710161840 A CN 201710161840A CN 106959426 B CN106959426 B CN 106959426B
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- tested
- test
- top level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 110
- 238000004891 communication Methods 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 9
- 230000005764 inhibitory process Effects 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 4
- 238000013100 final test Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000012986 modification Methods 0.000 abstract description 8
- 230000004048 modification Effects 0.000 abstract description 8
- 238000012795 verification Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012797 qualification Methods 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of anti-ground faults of electric energy meter to inhibit test and accuracy joint survey device, including PC top level control system, bottom control module, error calculating module and on-site calibrator；The PC top level control system respectively with bottom control module, error calculating module, on-site calibrator connection, the on-site calibrator is connect with electric energy meter to be tested, the PC top level control system sends control instruction to the bottom control module, the bottom control module is connect with electric energy meter to be tested, the calibrating state of the electric energy meter to be tested is controlled according to the control instruction for receiving the PC top level control system, the error calculating module is connect with electric energy meter to be tested, calculate the error information that the anti-ground fault of the electric energy meter to be tested inhibits test front and back, and it is sent to the PC top level control system.The PC top level control system, which passes through, judges whether the error knots modification of failure front and back ammeter examines the anti-ground fault rejection ability of electric energy meter within the range of permission.
Description
Technical field
The invention belongs to electric energy meter detection fields more particularly to a kind of anti-ground fault of electric energy meter to inhibit test and accuracy
Joint survey device.
Background technique
Currently, as national smart grid construction network increasingly increases increasingly extensive, China pair of application with smart grid
The calibrating of intelligent electric energy meter requires also more and more, especially electronic electric energy meter universal, electrical resistance of the China to electric energy meter
Can have and more more fully require, the accuracy of electric energy meter is also had higher requirement.In electrical performance demands, especially
It is that have in intelligent electric energy meter technical specification to the anti-ground fault rejection ability of electric energy meter and clearly require regulation.?
In accuracy requirement, the pilot projects such as the elementary error test of electric energy meter, starting, shunt running, measurement reproducibility are examined and determine
Come realize electric energy meter accuracy requirement test, have in intelligent electric energy meter technical specification and clearly require regulation.
In the prior art, hand on conventional stage body is typically employed in for the calibrating of the anti-ground fault rejection ability of electric energy meter
The mode analogue ground failure of dynamic wiring, it is working for three-phase and four-line through mutual inductor and access non-effectively earthed system or in
Electric energy meter on the property earth-free star-like power distribution network of point (in the case where ground fault and line generate 10% over-voltage condition over the ground, does not have
Two line-to-earth voltages of ground connection can reach 1.9 times of voltage rating) provide there are following requirements: it is carried out on a certain line in three lines
In the test of analogue ground malfunction, each line voltage, which is improved to 1.1 times of nominal voltage, lasts 4h.When test, electric energy meter
The ground terminal of neutral end and electric energy meter testing equipment (MTE) disconnect, and connect with one end of analogue ground failure in MTE.At this point, not having
The voltage for having two voltage ends of ground connection is then 1.9 times of phase voltage.When test, current circuit setting electric current is In, power factor
For 1, symmetrical load.After test, electric energy meter should not be damaged, and should correctly be worked.When electric energy meter is restored to normal work
When making temperature, the limit value of table 1 is not to be exceeded in the variable quantity of error.This method not only inefficiency, but also to equipment and operator
There are security risks by member.However, currently on the market without inhibiting the Automated inspection of test to fill for the anti-ground fault of electric energy meter
It sets.
Table 1
| Current value | Power factor | 0.2S grades | 0.5S grades | 1 grade |
| In | 1 | 0.1% | 0.3% | 0.7% |
For the accuracy requirement of electric energy meter, electric energy meter calibrating apparatus and electric energy meter to be examined and determine are generallyd use in the prior art
Connection, carries out wiring, as shown in Figure 1, connecting terminal and device therefor shown in Fig. 1 connect by taking three-phase and four-line electric energy meter as an example
Putting in order for line terminals may be inconsistent, and when wiring is subject to the connecting terminal sequence of equipment, but their connection relationship is not
Become.But it has certain problems, and electric energy meter calibrating apparatus is using artificial crimping manually；Electric energy meter calibrating apparatus only can be carried out standard
Exactness requires calibrating, can not carry out the calibrating of the anti-ground fault rejection ability of electric energy meter.
In conclusion inspection can not be automated for the test of the anti-ground fault rejection ability of electric energy meter in the prior art
It tests, is only capable of inefficiency caused by manual operation, there are problems that security risk and the prior art to equipment and operator
In how the test of electric energy meter anti-ground fault rejection ability and electric energy meter accuracy test be integrated into a combined unit, still lack
Weary effective solution scheme.
Summary of the invention
The present invention to solve the above-mentioned problems, overcomes in the prior art for the anti-ground fault rejection ability of electric energy meter
Test can not Automated inspection, be only capable of that inefficiency caused by manual operation, there are security risks to equipment and operator
Problem, and in the prior art do not test the anti-ground fault rejection ability of electric energy meter integrated with electric energy meter accuracy test
The problem of for a combined unit, provides a kind of anti-ground fault of electric energy meter and inhibits test and accuracy joint survey device, the dress
It sets and can be realized the automation and high efficiency for inhibiting test calibrating to the anti-ground fault of three-phase electric energy meter, reduce the operating time,
It improves work efficiency.
To achieve the goals above, the present invention is using a kind of following technical solution:
A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device, which anti-to electric energy meter can connect
Earth fault inhibits test to be examined and determine；
Described device includes PC top level control system, bottom control module, error calculating module and on-site calibrator；
The PC top level control system is connect with bottom control module, error calculating module, on-site calibrator respectively, described
On-site calibrator is connect with electric energy meter to be tested, and the PC top level control system sends control to the bottom control module and refers to
It enables, the bottom control module is connect with electric energy meter to be tested, according to the control instruction control for receiving the PC top level control system
The calibrating state of the electric energy meter to be tested is made, the error calculating module is connect with electric energy meter to be tested, is calculated described to be checked
It tests the anti-ground fault of electric energy meter and inhibits the error information of test front and back, and be sent to the PC top level control system.
Further, the PC top level control system includes PC host and display, and the PC host is connect with display,
Control command is sent to the bottom control module by the PC host；The PC host receives the error calculating module and calculates
Error information, error information is handled to obtain final test results, inspection result is sent to the display and is carried out
Display.
Further, the bottom control module includes control panel and actuating relay, the control panel and movement relay
Device connection, the control panel receive the control instruction of the PC host, it is to be checked to control actuating relay action simulation scene
Test the fault condition of electric energy meter.
Further, the one 485 interface is set in the bottom control module, and the bottom control module passes through described the
One 485 interfaces are connect with the PC host in the PC top level control system, the PC host and the bottom control module
Between communicated using 485 communication modes.
Further, the error calculating module is configured as calculating the electric energy error of failure front and back electric energy meter to be tested,
And the error result of calculating is uploaded to the PC host.
Further, the 2nd 485 interface is set in the error calculating module, and the error calculating module passes through described the
2 485 interfaces are connect with the PC host in the PC top level control system, the PC host and the error calculating module
Between communicated using 485 communication modes.
Further, network interface and the 3rd 485 interface are set on the on-site calibrator, and the on-site calibrator passes through described
Network interface is connect with the PC host in the PC top level control system, is used between the PC host and the on-site calibrator
Network interface communication mode is communicated；The on-site calibrator is connect by the 3rd 485 interface with electric energy meter to be tested, described
It is communicated between electric energy meter to be tested and the on-site calibrator using 485 communication modes.
Further, the on-site calibrator is configured as power source, carries out anti-ground fault suppression in electric energy meter to be tested
When system test, the on-site calibrator provides voltage, electric current as power source, for the calibrating of electric energy meter to be tested.
Further, the on-site calibrator is additionally configured to standard electric energy meter, carries out anti-ground connection in electric energy meter to be tested
When failure restraint is tested, the on-site calibrator is provided as standard electric energy meter for the electric energy error metering of electric energy meter to be tested
Calibration pulse benchmark.
The working principle of the invention:
The PC top level control system sends control instruction, the institute of the bottom control module to the bottom control module
It states after control panel receives control instruction and controls the actuating relay and switch the separate of electric energy meter ground fault to be tested, it is right respectively
The anti-ground fault rejection ability of each phase of electric energy meter to be tested is tested；
In the anti-ground fault rejection ability test of each phase of electric energy meter to be tested, the PC top level control system is received
The anti-ground fault of electric energy meter to be tested that error calculating module calculates inhibits the error information of test front and back, and judges event
Within the range of permission whether the error knots modification of barrier front and back electric energy meter to be tested.
By the PC top level control system to sending instructions under bottom control module, switching event is acted by actuating relay
What is hindered is separate, to verify respectively to each mutually anti-ground fault rejection ability of electric energy meter to be tested.To the error of front and back twice
Knots modification is as the foundation for judging whether qualification.
A kind of anti-ground fault inhibition test of the anti-ground fault inhibition test of electric energy meter and accuracy joint survey device
The method of inspection, specific steps include:
(1) examine and determine for the first time: electric energy meter operating condition to be tested is examined and determine in setting for the first time, to electric energy meter to be tested under the setting operating condition
First time error testing is carried out, data are recorded；
It is described to examine and determine electric energy meter operating condition to be tested for the first time are as follows: power factor 1, load current In；
(2) simulated failure: by bottom control module simulation scene connection box of electric energy meter failure to be tested, and three are exported
Relatively 10% overvoltage, judges whether the two-phase not being grounded at this time can bear 1.9 times of voltage rating, if so, into
Step (3), if it is not, electric energy meter defect to be tested；
(3) secondary calibrating after failure: after the failure etc. after electric energy meter to be tested state back to normal, secondary inspection is set
Fixed electric energy meter operating condition to be tested, carries out second of error testing to electric energy meter to be tested under the setting operating condition, and record data:
The secondary calibrating electric energy meter operating condition to be tested are as follows: power factor 1, load current In；
(4) judgement conclusion: it is inclined that the data for data and the step (3) record for taking the step (1) to record calculate error
Difference, deviation range is referring to intelligent electric energy meter technical specification.
(5) it is cut to sending instructions under bottom control module by actuating relay movement by the PC top level control system
The separate of electrical energy meter fault to be tested is changed, is repeated step (1)-step (4), knots modification after three-phase fault, which all meets, to be wanted
It asks, which just determines qualification, is otherwise unqualified.
To solve the above-mentioned problems, electric energy meter can be carried out without a kind of device in the prior art to the present invention simultaneously by overcoming
How the problem of test of anti-ground fault rejection ability and electric energy meter accuracy requirement are tested, resist electric energy meter in the prior art
The test of ground fault rejection ability is integrated into a combined unit with electric energy meter accuracy test, provides a kind of anti-ground connection of electric energy meter
Failure restraint test and accuracy joint survey device.
To achieve the goals above, the present invention uses following another technical solution:
A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device, which can also be to electric energy meter standard
Exactness requires test to be examined and determine；
Described device includes PC top level control system, bottom control module, error calculating module and on-site calibrator；
The PC top level control system is connect with bottom control module, error calculating module, on-site calibrator respectively, described
PC top level control system sends control instruction to the bottom control module,
The bottom control module is connect with electric energy meter to be tested, is referred to according to the control for receiving the PC top level control system
The calibrating state for controlling the electric energy meter to be tested is enabled,
The error calculating module is connect with electric energy meter to be tested, described when carrying out the test of electric energy meter accuracy requirement
Error calculating module receives the data of the electric energy meter to be tested, and transfers data to the PC top level control system,
The on-site calibrator is connect with electric energy meter to be tested, is carrying out accuracy requirement test to electric energy meter to be tested
When, voltage and current is provided for electric energy meter to be tested, and provide calibration pulse benchmark as standard scale.
The working principle of the invention: the present apparatus is tested suitable for three-phase quadriphase system electric energy meter accuracy requirement, the scene
Tester is configured as power source and standard scale, is electrical verification to be checked when carrying out accuracy requirement test to electric energy meter to be tested
It can table offer voltage and current.By the elementary error test to electric energy meter, start, shunt running, the pilot projects such as measurement reproducibility
The accuracy requirement test for being examined and determine to realize electric energy meter, test method and judgement result are according to intelligent electric energy meter technical specification
It is required that.
Beneficial effects of the present invention:
(1) the present invention provides a kind of anti-ground faults of electric energy meter to inhibit test and accuracy joint survey device, device
Configuration is flexible, can show test data and test result, and system efficiently solves current experiment room detection stage body and can not test automatically
The defect of the ammeter performance is demonstrate,proved, while the short slab under compensating for laboratory verification efficient, brought great convenience to verification.
(2) present invention can be realized full-automatic calibrating and the record for inhibiting test to the anti-ground fault of electric energy meter, while energy
It is enough to realize the automation test electric energy meter accuracy requirement and efficient calibrating, the operating time is reduced, work effect is improved
Rate.
Detailed description of the invention
Fig. 1 is the electric energy meter calibrating apparatus of the prior art and the attachment structure schematic diagram of electric energy meter to be examined and determine；
Fig. 2 is overall structure diagram of the invention；
Fig. 3 is the operation principle schematic diagram of the embodiment of the present invention 1；
Wherein, 1-PC top level control system, 2- bottom control module, 3- control panel, 4- actuating relay, 5- error calculation
Module, 6- on-site calibrator, 7- electric energy meter to be tested, the one 485 interface of 8-, the 2nd 485 interface of 9-, 10- network interface, 11- third
485 interfaces.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
Embodiment 1:
For the present embodiment by taking three-phase and four-line intelligent electric energy meter as an example, a kind of anti-ground fault of electric energy meter inhibits test and accuracy
Joint survey device, as shown in Fig. 2, the device can inhibit test to examine the anti-ground fault of electric energy meter in the present embodiment
It is fixed；
Described device includes PC top level control system 1, bottom control module 2, error calculating module 5 and on-site calibrator 6；
The PC top level control system 1 is connect with bottom control module 2, error calculating module 5, on-site calibrator 6 respectively,
The on-site calibrator 6 is connect with electric energy meter 7 to be tested, and the PC top level control system 1 sends the bottom control module 2
Control instruction, the bottom control module 2 are connect with electric energy meter 7 to be tested, according to the control for receiving the PC top level control system 1
System instruction controls the calibrating state of the electric energy meter 7 to be tested, and the error calculating module 5 is connect with electric energy meter 7 to be tested, counts
It calculates the anti-ground fault of the electric energy meter to be tested 7 and inhibits the error information of test front and back, and be sent to PC top level control system
System 1.
The PC top level control system 1 includes PC host and display, and the PC host is connect with display, the PC master
Control command is sent to the bottom control module 2 by machine；The PC host receives the error that the error calculating module 5 calculates
Data handle error information to obtain final test results, and inspection result is sent to the display and is shown.
The bottom control module 2 includes control panel 3 and actuating relay 4, and the control panel 3 and actuating relay 4 connect
It connects, the control panel 3 receives the control instruction of the PC host, and it is to be tested to control the 4 action simulation scene of actuating relay
The fault condition of electric energy meter 7.
One 485 interface 8 is set in the bottom control module 2, and the bottom control module 2 passes through the described 1st
Interface 8 is connect with the PC host in the PC top level control system 1, the PC host and the bottom control module 2 it
Between communicated using 485 communication modes.
The error calculating module 5 is configured as calculating the electric energy error of failure front and back electric energy meter 7 to be tested, and will calculate
Error result be uploaded to the PC host.
2nd 485 interface 9 is set in the error calculating module 5, and the error calculating module 5 passes through the described 2nd 485
Interface 9 is connect with the PC host in the PC top level control system 1, the PC host and the error calculating module 5 it
Between communicated using 485 communication modes.
Network interface 10 and the 3rd 485 interface 11 are set on the on-site calibrator 6, and the on-site calibrator 6 passes through the net
Mouth 10 is connect with the PC host in the PC top level control system 1, is adopted between the PC host and the on-site calibrator 6
It is communicated with 10 communication mode of network interface；The on-site calibrator 6 passes through the 3rd 485 interface 11 and electric energy meter 7 to be tested
Connection is communicated between the electric energy meter 7 to be tested and the on-site calibrator 6 using 485 communication modes.
The on-site calibrator 6 is configured as power source, carries out anti-ground fault in electric energy meter 7 to be tested and inhibits test
When, the on-site calibrator 6 is used as power source, and the calibrating for electric energy meter 7 to be tested provides voltage, electric current.
The on-site calibrator 6 is additionally configured to standard electric energy meter, carries out anti-ground fault inhibition in electric energy meter 7 to be tested
When test, the on-site calibrator 6 is used as standard electric energy meter, provides standard arteries and veins for the electric energy error metering of electric energy meter 7 to be tested
Rush benchmark.
The working principle of the present embodiment:
The PC top level control system 1 sends control instruction, the bottom control module 2 to the bottom control module 2
The control panel 3 receive control instruction after control the phase that the actuating relay 4 switches 7 ground fault of electric energy meter to be tested
Not, the anti-ground fault rejection ability of each phase of electric energy meter 7 to be tested is tested respectively；
In the anti-ground fault rejection ability test of each phase of electric energy meter 7 to be tested, the PC top level control system 1 is connect
It receives the anti-ground fault of the electric energy meter 7 to be tested that error calculating module 5 calculates and inhibits the error information of test front and back, and sentence
Within the range of permission whether the error knots modification of disconnected failure front and back electric energy meter 7 to be tested.
By the PC top level control system 1 to sending instructions under bottom control module 2, cut by the movement of actuating relay 4
The separate of failure is changed, to verify respectively to each mutually anti-ground fault rejection ability of electric energy meter 7 to be tested.Twice to front and back
Error knots modification is as the foundation for judging whether qualification.
A kind of anti-ground fault inhibition test of the anti-ground fault inhibition test of electric energy meter and accuracy joint survey device
The method of inspection, workflow of the invention is as shown in figure 3, specific steps include:
(1) examine and determine for the first time: 7 operating condition of electric energy meter to be tested is examined and determine in setting for the first time, to electric energy to be tested under the setting operating condition
Table 7 carries out first time error testing, records data；
It is described to examine and determine 7 operating condition of electric energy meter to be tested for the first time are as follows: power factor 1, load current In；
(2) it simulated failure: by the bottom control module 2 scene of simulating 7 wiring faults of electric energy meter to be tested, and exports
Three relatively 10% overvoltage, judge whether the two-phase that is not grounded at this time can bear 1.9 times of voltage rating, if so, into
Enter step (3), if it is not, 7 defect of electric energy meter to be tested；
(3) it secondary calibrating after failure: after the failure etc. after electric energy meter 7 to be tested state back to normal, sets secondary
7 operating condition of electric energy meter to be tested is examined and determine, second of error testing is carried out to electric energy meter 7 to be tested under the setting operating condition, and record
Data:
Secondary calibrating 7 operating condition of electric energy meter to be tested are as follows: power factor 1, load current In；
(4) judgement conclusion: it is inclined that the data for data and the step (3) record for taking the step (1) to record calculate error
Difference, deviation range is referring to intelligent electric energy meter technical specification.
(5) it is acted to sending instructions under bottom control module 2 by actuating relay 4 by the PC top level control system 1
Switch the separate of 7 failure of electric energy meter to be tested, repeat step (1)-step (4), knots modification after three-phase fault all meets
It is required that the electric energy meter just determines qualification, it is otherwise unqualified.
Apparatus of the present invention configuration is flexible, can show that test data and test result, system efficiently solve current experiment room
Detection stage body can not verify automatically the defect of the ammeter performance, while the short slab that compensate for laboratory verification efficient lower, to school
It tests and brings great convenience.
Embodiment 2:
A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device, in the present embodiment the device pair
The test of electric energy meter accuracy requirement is examined and determine；The present invention includes intelligent electric energy meter technology for the test of electric energy meter accuracy requirement
Most of accuracy requirement test, specifically includes: the test of the limit of error caused by curent change, starting test, shunt running in specification
Test, constant of electric energy meter test, the test of the electric energy meter error of indication, clock accuracy test, error consistency test, error variance
The repetitive test of test, the test of load current difference between rising and falling, measurement.
In the present embodiment, by taking the device carries out starting test to electric energy meter to be detected as an example.
Described device includes PC top level control system 1, bottom control module 2, error calculating module 5 and on-site calibrator 6；
The PC top level control system 1 is connect with bottom control module 2, error calculating module 5, on-site calibrator 6 respectively,
The PC top level control system 1 sends control instruction to the bottom control module 2,
The bottom control module 2 is connect with electric energy meter 7 to be tested, according to the control for receiving the PC top level control system 1
System instruction controls the calibrating state of the electric energy meter 7 to be tested,
The error calculating module 5 is connect with electric energy meter 7 to be tested, when carrying out the test of electric energy meter accuracy requirement, institute
It states error calculating module 5 and receives the data of the electric energy meter to be tested 7, and transfer data to the PC top level control system 1,
The on-site calibrator 6 is connect with electric energy meter 7 to be tested, is carrying out accuracy requirement examination to electric energy meter 7 to be tested
When testing, voltage and current is provided for electric energy meter 7 to be tested, and provide calibration pulse benchmark as standard scale.
The present apparatus is tested suitable for three-phase quadriphase system electric energy meter accuracy requirement, and the on-site calibrator 6 is configured as function
Rate source and standard scale, to electric energy meter 7 to be tested carry out accuracy requirement test when, for electric energy meter 7 to be tested provide voltage and
Electric current.By the elementary error test to electric energy meter, start, shunt running, the pilot projects such as measurement reproducibility are examined and determine to realize
The accuracy requirement of electric energy meter is tested, and test method and judgement result are according to intelligent electric energy meter demand of technical standard.
The working principle of the present embodiment:
The test objective of electric energy meter starting test is test instrumentation in low current and under conditions of respectively balance each other, according to corresponding
Standard can normal starting and continuous metering.
The starting current value of electric energy meter 7 to be tested, the bottom control module are set in the PC top level control system 1
2 connect with electric energy meter 7 to be tested, control the electric energy to be tested according to the control instruction for receiving the PC top level control system 1
The calibrating state of table 7；
It is that electric energy meter 7 to be tested provides the voltage and current set by the on-site calibrator 6, to electric energy meter plus ginseng
Than voltage, specified (basic) electric current, φ=1.0 cos are set, error in judgement computing module 5 receives the electric energy meter to be tested 7
The active pulse issued, and active pulse is sent to the PC top level control system 1, the PC top level control system 1 records
Umber of pulse and burst length, and shown by the display；
After dropping voltage and current to electric energy meter 7 to be tested, output electricity is reset in the PC top level control system 1
Stream, makes it equal to the starting current of electric energy meter 7 to be tested, and it is 1 that power factor, which is arranged, and voltage is the ginseng of electric energy meter 7 to be tested
Than voltage, verification circle number is set as biggish numerical value (such as larger than 10), and will currently be shown in the PC top level control system 1
Number of pulses clear 0.
Voltage and current is increased to electric energy meter 7 to be tested, the PC top level control system 1 notes down electric energy meter power-on time, to
When electric energy meter 7 being examined to issue a pulse, first pulse generating time is noted down, when electric energy meter 7 to be tested issues second arteries and veins
When rushing, second pulse generating time of electric energy meter is noted down.If electric energy meter does not go out arteries and veins for a long time (more than 3 times of the theoretical starting time)
Punching judges that 7 starting performance of electric energy meter to be tested lacks in the case where firmly believing wiring, institute's making alive, electric current, the correct situation of power factor
It falls into.
The interval time for calculating electric energy meter first pulse and second pulse, judge that can electric energy meter 7 to be tested start
And it is continuously recorded.
Beneficial effects of the present invention:
(1) the present invention provides a kind of anti-ground faults of electric energy meter to inhibit test and accuracy joint survey device, device
Configuration is flexible, can show test data and test result, and system efficiently solves current experiment room detection stage body and can not test automatically
The defect of the ammeter performance is demonstrate,proved, while the short slab under compensating for laboratory verification efficient, brought great convenience to verification.
(2) present invention can be realized full-automatic calibrating and the record for inhibiting test to the anti-ground fault of electric energy meter, while energy
It is enough to realize the automation test electric energy meter accuracy requirement and efficient calibrating, the operating time is reduced, work effect is improved
Rate.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, the field technical staff should be understood that based on the technical solutions of the present invention those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device, it is characterized in that: the device is configured
To inhibit test to examine and determine the anti-ground fault of electric energy meter；Described device include PC top level control system, bottom control module,
Error calculating module and on-site calibrator；
The PC top level control system is connect with bottom control module, error calculating module, on-site calibrator respectively, the scene
Tester is connect with electric energy meter to be tested, and the PC top level control system sends control instruction, institute to the bottom control module
It states bottom control module to connect with electric energy meter to be tested, according to the control instruction control for receiving the PC top level control system
The calibrating state of electric energy meter to be tested, the error calculating module are connect with electric energy meter to be tested, calculate the electric energy to be tested
The anti-ground fault of table inhibits the error information of test front and back, and is sent to the PC top level control system.
2. a kind of anti-ground fault of electric energy meter as described in claim 1 inhibits test and accuracy joint survey device, special
Sign is: the PC top level control system includes PC host and display, and the PC host is connect with display, and the PC host will
Control command is sent to the bottom control module；The PC host receives the error information that the error calculating module calculates,
Error information is handled to obtain final test results, inspection result is sent to the display and is shown.
3. a kind of anti-ground fault of electric energy meter as claimed in claim 2 inhibits test and accuracy joint survey device, special
Sign is: the bottom control module includes control panel and actuating relay, and the control panel is connected with actuating relay, the control
Making sheet receives the control instruction of the PC host, controls the fault condition at the actuating relay action simulation scene.
4. a kind of anti-ground fault of electric energy meter as claimed in claim 3 inhibits test and accuracy joint survey device, special
Sign is: in the bottom control module be arranged the one 485 interface, the bottom control module by the one 485 interface with
PC host connection in the PC top level control system, uses 485 between the PC host and the bottom control module
Communication mode is communicated.
5. a kind of anti-ground fault of electric energy meter as claimed in claim 2 inhibits test and accuracy joint survey device, special
Sign is: the error calculating module is configured as calculating the electric energy error of failure front and back ammeter, and will be on the error result of calculating
Reach the PC host.
6. a kind of anti-ground fault of electric energy meter as claimed in claim 5 inhibits test and accuracy joint survey device, special
Sign is: in the error calculating module be arranged the 2nd 485 interface, the error calculating module by the 2nd 485 interface with
PC host connection in the PC top level control system, uses 485 between the PC host and the error calculating module
Communication mode is communicated.
7. a kind of anti-ground fault of electric energy meter as claimed in claim 2 inhibits test and accuracy joint survey device, special
Sign is: network interface and the 3rd 485 interface being arranged on the on-site calibrator, the on-site calibrator passes through the network interface and the PC
PC host connection in top level control system, uses network interface communication mode between the PC host and the on-site calibrator
It is communicated；The on-site calibrator is connect by the 3rd 485 interface with electric energy meter to be tested, the electric energy meter to be tested
It is communicated between the on-site calibrator using 485 communication modes.
8. a kind of anti-ground fault of electric energy meter as claimed in claim 7 inhibits test and accuracy joint survey device, special
Sign is: the on-site calibrator is configured as power source, described when electric energy meter to be tested carries out anti-ground fault inhibition test
On-site calibrator provides voltage, electric current as power source, for the calibrating of electric energy meter to be tested.
9. a kind of anti-ground fault of electric energy meter as claimed in claim 7 inhibits test and accuracy joint survey device, special
Sign is: the on-site calibrator is additionally configured to standard electric energy meter, carries out anti-ground fault in electric energy meter to be tested and inhibits test
When, the on-site calibrator provides calibration pulse benchmark as standard electric energy meter, for the electric energy error metering of electric energy meter to be tested.
10. the anti-ground fault of a kind of electric energy meter as described in claim 1-9 is any inhibits test to fill with accuracy joint survey
It sets, which is configured as testing electric energy meter accuracy requirement and examine and determine；
The PC top level control system is connect with bottom control module, error calculating module, on-site calibrator respectively, on the PC
Layer control system sends control instruction to the bottom control module,
The bottom control module is connect with electric energy meter to be tested, according to the control instruction control for receiving the PC top level control system
The calibrating state of the electric energy meter to be tested is made,
The error calculating module is connect with electric energy meter to be tested, when carrying out the test of electric energy meter accuracy requirement, the error
Computing module receives the data of the electric energy meter to be tested, and transfers data to the PC top level control system,
The on-site calibrator is connect with electric energy meter to be tested, when carrying out accuracy requirement test to electric energy meter to be tested, is
Electric energy meter to be tested provides voltage and current, and provides calibration pulse benchmark as standard scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161840.XA CN106959426B (en) | 2017-03-17 | 2017-03-17 | A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710161840.XA CN106959426B (en) | 2017-03-17 | 2017-03-17 | A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106959426A CN106959426A (en) | 2017-07-18 |
| CN106959426B true CN106959426B (en) | 2019-05-21 |
Family
ID=59471406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710161840.XA Active CN106959426B (en) | 2017-03-17 | 2017-03-17 | A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106959426B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856577A (en) * | 2018-12-09 | 2019-06-07 | 北京航天计量测试技术研究所 | A kind of device and method for low current meter locale auto-calibration |
| CN110231504A (en) * | 2019-07-09 | 2019-09-13 | 国网河北省电力有限公司邢台供电分公司 | Detect the method and stealing detection device of electricity stealing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2704051Y (en) * | 2002-04-23 | 2005-06-08 | 江苏林洋电子有限公司 | Three-phase multifunctional electric energy meter counting device |
| CN204855785U (en) * | 2015-07-28 | 2015-12-09 | 国家电网公司 | Ammeter impact property detects check table |
| CN106405471A (en) * | 2015-07-28 | 2017-02-15 | 国网河南省电力公司南阳供电公司 | Electric energy meter reliability test system |
-
2017
- 2017-03-17 CN CN201710161840.XA patent/CN106959426B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2704051Y (en) * | 2002-04-23 | 2005-06-08 | 江苏林洋电子有限公司 | Three-phase multifunctional electric energy meter counting device |
| CN204855785U (en) * | 2015-07-28 | 2015-12-09 | 国家电网公司 | Ammeter impact property detects check table |
| CN106405471A (en) * | 2015-07-28 | 2017-02-15 | 国网河南省电力公司南阳供电公司 | Electric energy meter reliability test system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106959426A (en) | 2017-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954925B (en) | A kind of fault oscillograph dynamic testing method based on RTDS real-time simulation | |
| CN108181522A (en) | The filed detection system of AC charging facility | |
| KR20140046788A (en) | Training apparatus for a smart grid education | |
| CN101950011A (en) | Electricity transformer verification connection analog system and connection judging method thereof | |
| CN106959426B (en) | A kind of anti-ground fault of electric energy meter inhibits test and accuracy joint survey device | |
| Pourbeik et al. | An aggregate dynamic model or distributed energy resources or power system stability studies | |
| CN204720060U (en) | A kind of low voltage electric energy measure device is installed and test training device | |
| CN106528968A (en) | Intelligent substation automatic dynamic simulation test method based on SSD file | |
| Ren et al. | Modeling and simulation tools for teaching protective relaying design and application for the smart grid | |
| CN107909901A (en) | Power supply station's Training Room marketing training cabinet and its application process | |
| CN203037759U (en) | Detection apparatus for response waveform of dynamic reactive power compensation device | |
| US20230336122A1 (en) | Hil testing platform for photovoltaic power station, and ppc performance testing method | |
| CN108648549A (en) | A kind of the power information acquisition closed-loop simulation system and control method of object-oriented | |
| CN106569053B (en) | A kind of simulation system and method for pure electric automobile on-vehicle battery external characteristics | |
| CN104794968A (en) | Low-voltage electric energy measuring, mounting and connection analyzing comprehensive practical training device | |
| CN108061867A (en) | Debugging and testing method of combined power supply monitoring unit | |
| Polster et al. | Voltage stability monitoring using a modified thevenin impedance | |
| CN204882853U (en) | Electric energy meter pressure resistance test installation | |
| CN108152782B (en) | Method for testing correction coefficient of high-supply high-count electric energy meter | |
| CN101719324B (en) | Simulation training system of voltage drop load test in electric power system measurement loop | |
| CN105322541A (en) | Simulated power flow calculation method for transformer substation | |
| CN215678646U (en) | Test system of PWM circuit | |
| CN107169213B (en) | Method, device and system for testing function indexes of zero-sequence current adaptive protection device | |
| CN105487947A (en) | Method for testing power conversion efficiency | |
| CN115575778A (en) | Calibration system and calibration method of direct-current insulation monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: State Grid Corporation of China |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210401 Address after: No. 150, Jinger Road, Daguanyuan, Shizhong District, Jinan City, Shandong Province Patentee after: Shandong Electric Power Marketing Center Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee before: STATE GRID CORPORATION OF CHINA |