CN105607028A - Method for improving batch test accuracy of single-phase intelligent electric energy meter under real load working condition - Google Patents
Method for improving batch test accuracy of single-phase intelligent electric energy meter under real load working condition Download PDFInfo
- Publication number
- CN105607028A CN105607028A CN201510980498.7A CN201510980498A CN105607028A CN 105607028 A CN105607028 A CN 105607028A CN 201510980498 A CN201510980498 A CN 201510980498A CN 105607028 A CN105607028 A CN 105607028A
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- China
- Prior art keywords
- tie breaker
- electric energy
- energy meter
- control
- real load
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- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004891 communication Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 description 6
- 238000012795 verification Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 238000010998 test method Methods 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
Abstract
The invention provides a method for improving the batch test accuracy of a single-phase intelligent electric energy meter under a real load working condition, and the method comprises the steps: (1) setting a test condition; (2) setting the amount of to-be-tested electric energy meters and the time of a standard electric energy meter connecting between the adjacent meters; (3) controlling a current circuit breaker controller through the upper-computer software programming; (4) controlling the switching of a current circuit breaker by the current circuit breaker controller; and (5) finishing the test. According to the invention, the method can more precisely test the metering error of the electric energy meter under the real load working condition, the manual wiring workload is reduced, and the efficiency of testing the metering error of the electric energy meter under the real load working condition is improved.
Description
Technical field
The present invention relates to the field of automatic testing of intelligent electric energy meter, be specifically related to a kind of raising under real load conditionThe method of the single-phase intelligent electric energy meter batch testing degree of accuracy.
Background technology
The laboratory verification of electric energy meter error in dipping carries out under " virtual load " condition, so-called " empty negativeLotus " refer to and adopt respectively independently voltage and current loop to power to electric energy meter. Due to voltage circuit and electric currentLoop separates, checking multiple meters electric energy meter simultaneously in the time carrying out the calibrating of electric energy meter, and can not produce byThe additive error that electric energy meter power consumption is brought, the still mode of connection and the actual fortune of electric energy meter of " virtual load " calibratingWiring difference under row operating mode. When the real load check of electric energy meter can solve " virtual load " verification effectivelyDue to the problem of mode of connection generation, but carry out single-phase electric energy meter batch testing under real loading condiction time,Because voltage and current circuit is not isolated, the direct series connection of polylith electric energy meter can produce extra current, thereforeThe error in dipping of the table meter that the accurate-metering error that standard scale obtains is just adjacent, in order to obtain every tableMeter error accurately under real Road test condition, at present can only be by increasing quantity or the craft of standard scaleChange the mode of connection of electric energy meter, and these two kinds of methods testing cost and workload are increased greatly. Therefore,How improving under real load condition the efficiency of carrying out in batches single-phase electric energy meter error testing is very important askingTopic.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of single-phase intelligent under real load condition that improvesThe method of the electric energy meter batch testing degree of accuracy, under real load condition by control breaker automatically switch and thenChange the epi-position position of standard electric energy meter access, and then obtain every tested single-phase electric energy meter under the real loadError in dipping. This method of testing can alleviate the wiring work of detection, make testing sooner, more accurate.
Realizing the solution that above-mentioned purpose adopts is:
Improve a method for the single-phase intelligent electric energy meter batch testing degree of accuracy under real load condition, described methodComprise:
(1) test condition is set;
(2) quantity of tested table and the time that standard scale accesses at neighboar lists interdigit are set;
(3) by upper software programming, tie breaker controller is controlled;
(4) tie breaker controller control tie breaker switches;
(5) tested.
Preferably, in described step (1), described test condition, comprising: tie breaker controller, electricityStream breaker, upper software and control computer.
Further, described tie breaker controller is by receiving the instruction control current interruption of upper softwareThe order of device break-make;
Described tie breaker is successively realized break-make instruction;
Described upper software arranges the quantity of tested table, time, the breaker control that standard scale accesses adjacent epi-positionThe break-make order of circuit processed;
Described control computer is the hardware carrier of upper software.
Further, described tie breaker controller is by RS232 serial ports and control computer communication, logicalCross the break-make of RS485 serial ports control tie breaker.
Preferably, in described step (2), the quantity of described tested table is 64;
The time of described access is more than or equal to 3min.
Preferably, in described step (3), the front end of described electric energy meter live wire and zero line installs 6 breakers additionalComplete the switching of side circuit.
Preferably, described tie breaker controller adopts Labview to write driving.
Compared with prior art, the present invention has following beneficial effect:
The present invention can more accurately measure the error in dipping of electric energy meter under real load condition, has reduced peopleThe workload of work wiring, has improved the efficiency of measuring electric energy meter error in dipping under real load condition.
Brief description of the drawings
Fig. 1 is the schematic diagram that under real load condition of the present invention, standard table position is switched;
Fig. 2 is the control flow chart that the present invention tests.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Following control strategy is taked in the wiring switching of standard electric energy meter: as shown in Figure 1, standard scale is positioned at testedBetween table 1 and tested table 2, what now obtain is the error in dipping of tested table 2. Then by standard electric energy meterAccess between tested table 2 and tested table 3, comprise two operating procedures: standard scale excises from current location,Standard scale accesses next adjacent position. First according to the following step, standard scale is (real figure from current locationWire frame position) excision: 1) closed S3 and S6, makes electric current directly flow to tested table 2 from tested table 1; 2)Disconnect successively S1, S2, S4 and S6, make standard scale depart from current location. Then standard scale is accessed testedBetween table 2 and tested table 3 (dotted line frame position in figure), step is as follows: 1) closed S7, S8, S10 successivelyAnd S11, make standard scale access; 2) disconnect S9 and S12, electric current is flowed to through standard scale from tested table 2Tested table 3. It is more than a complete standard scale position handover operation strategy.
As shown in Figure 2, a kind of side of improving the single-phase intelligent electric energy meter batch testing degree of accuracy under real load conditionMethod, described method comprises:
(1) test condition is set;
(2) quantity of tested table and the time that standard scale accesses at neighboar lists interdigit are set;
(3) by upper software programming, tie breaker controller is controlled;
(4) tie breaker controller control tie breaker switches;
(5) tested.
In described step (1), described test condition, comprising: tie breaker controller, tie breaker,Upper software and control computer.
Described tie breaker controller is by receiving instruction control tie breaker break-make suitable of upper softwareOrder;
Described tie breaker is successively realized break-make instruction;
Described upper software arranges the quantity of tested table, time, the breaker control that standard scale accesses adjacent epi-positionThe break-make order of circuit processed;
Described control computer is the hardware carrier of upper software.
Described tie breaker controller, by RS232 serial ports and control computer communication, is gone here and there by RS485The break-make of mouth control tie breaker.
In described step (2), the quantity of described tested table is 64;
The time of described access is more than or equal to 3min.
In described step (3), the front end of described electric energy meter live wire and zero line installs 6 breakers additional and completes realityThe switching of circuit.
Described tie breaker controller adopts Labview to write driving.
Finally should be noted that: above embodiment only for illustrate the application technical scheme but not to its protectionThe restriction of scope, although the application is had been described in detail with reference to above-described embodiment, affiliated field commonTechnical staff is to be understood that: those skilled in the art still can be to the detailed description of the invention of application after reading the applicationCarry out all changes, revise or be equal to replacement, but these change, revise or be equal to replacement, all in ShenWithin the claim protection domain that please await the reply.
Claims (7)
1. improve a method for the single-phase intelligent electric energy meter batch testing degree of accuracy under real load condition, its featureBe, described method comprises:
(1) test condition is set;
(2) quantity of tested table and the time that standard scale accesses at neighboar lists interdigit are set;
(3) with upper software programming control tie breaker controller;
(4) switching of tie breaker controller control tie breaker;
(5) tested.
2. method according to claim 1, is characterized in that, in described step (1), and described surveyExamination condition, comprising: tie breaker controller, tie breaker, upper software and control computer.
3. method according to claim 2, is characterized in that, described tie breaker controller passes throughReceive the order of the instruction control tie breaker break-make of upper software;
Described tie breaker is successively realized break-make instruction;
Described upper software arranges the quantity of tested table, time, the breaker control that standard scale accesses adjacent epi-positionThe break-make order of circuit processed;
Described control computer is the hardware carrier of upper software.
4. method according to claim 2, is characterized in that, described tie breaker controller passes throughRS232 serial ports and control computer communication, by the break-make of RS485 serial ports control tie breaker.
5. method according to claim 1, is characterized in that, in described step (2), and described quiltThe quantity of survey table is 64;
The time of described access is more than or equal to 3min.
6. method according to claim 1, is characterized in that, in described step (3), and described electricityThe front end that can show live wire and zero line installs 6 breakers additional completes the switching of side circuit.
7. method according to claim 1, is characterized in that, described tie breaker controller adoptsLabview writes driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980498.7A CN105607028A (en) | 2015-12-23 | 2015-12-23 | Method for improving batch test accuracy of single-phase intelligent electric energy meter under real load working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980498.7A CN105607028A (en) | 2015-12-23 | 2015-12-23 | Method for improving batch test accuracy of single-phase intelligent electric energy meter under real load working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105607028A true CN105607028A (en) | 2016-05-25 |
Family
ID=55987106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510980498.7A Pending CN105607028A (en) | 2015-12-23 | 2015-12-23 | Method for improving batch test accuracy of single-phase intelligent electric energy meter under real load working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105607028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554351A (en) * | 2019-09-30 | 2019-12-10 | 国网山东省电力公司电力科学研究院 | real load detection method and system of non-invasive load electric energy meter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2186402Y (en) * | 1993-03-25 | 1994-12-28 | 本溪钢铁公司 | Actual load parity checker |
| CN101685147A (en) * | 2008-09-22 | 2010-03-31 | 黑龙江省电力科学研究院 | Test device and method for simulating field electric energy measurement |
| CN103472432A (en) * | 2013-09-12 | 2013-12-25 | 国家电网公司 | Intelligent substation electric energy measuring secondary circuit real load error detection device and method |
| CN103983942A (en) * | 2014-05-26 | 2014-08-13 | 国家电网公司 | Intelligent ammeter calibrating device with switchable virtual and true loads and method thereof |
| CN204228947U (en) * | 2014-11-19 | 2015-03-25 | 国家电网公司 | A kind of single-phase real load electric energy table calibration equipment |
-
2015
- 2015-12-23 CN CN201510980498.7A patent/CN105607028A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2186402Y (en) * | 1993-03-25 | 1994-12-28 | 本溪钢铁公司 | Actual load parity checker |
| CN101685147A (en) * | 2008-09-22 | 2010-03-31 | 黑龙江省电力科学研究院 | Test device and method for simulating field electric energy measurement |
| CN103472432A (en) * | 2013-09-12 | 2013-12-25 | 国家电网公司 | Intelligent substation electric energy measuring secondary circuit real load error detection device and method |
| CN103983942A (en) * | 2014-05-26 | 2014-08-13 | 国家电网公司 | Intelligent ammeter calibrating device with switchable virtual and true loads and method thereof |
| CN204228947U (en) * | 2014-11-19 | 2015-03-25 | 国家电网公司 | A kind of single-phase real load electric energy table calibration equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554351A (en) * | 2019-09-30 | 2019-12-10 | 国网山东省电力公司电力科学研究院 | real load detection method and system of non-invasive load electric energy meter |
| CN110554351B (en) * | 2019-09-30 | 2022-03-29 | 国网山东省电力公司营销服务中心(计量中心) | Real load detection method and system of non-invasive load electric energy meter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170718 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant after: China Electric Power Research Institute Applicant after: State Grid Corporation of China Applicant after: State Grid Tianjin Electric Power Company Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant before: China Electric Power Research Institute Applicant before: State Grid Corporation of China |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160525 |
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| RJ01 | Rejection of invention patent application after publication |