CN101770007A - Electric energy meter test system and method thereof - Google Patents
Electric energy meter test system and method thereof Download PDFInfo
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- CN101770007A CN101770007A CN200810241765A CN200810241765A CN101770007A CN 101770007 A CN101770007 A CN 101770007A CN 200810241765 A CN200810241765 A CN 200810241765A CN 200810241765 A CN200810241765 A CN 200810241765A CN 101770007 A CN101770007 A CN 101770007A
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Abstract
Being applicable to the field of ammeter testing, the invention provides an electric energy meter test system and a method thereof; wherein the system comprises a PC, a controller, a meter hanging cabinet and at least one electric energy meter to be tested; the meter hanging cabinet is used for fixing the electric energy meter to be tested, the PC is provided with a withstand voltage test program and a meter counting program; the PC carries out withstand voltage test on the electric energy meter to be tested, which is arranged in the meter hanging cabinet according to the withstand voltage test program and produces a test result; and the PC carries out meter counting test on the electric energy meter to be tested, which is arranged in the meter hanging cabinet according to the meter counting program and produces a test result. In the invention, the PC is provided with a withstand voltage test program and a meter counting program, respectively carries out withstand voltage test and meter counting test on the electric energy meter to be tested, which is arranged in the meter hanging cabinet according to the withstand voltage test program and the meter counting program and produces test results; in the embodiment of the invention, only one-time wiring is enough for automatically completing withstand voltage test and meter counting test on the electric energy meter to be tested, so that work for electric power maintenance is greatly reduced and work efficiency for electric power maintenance is improved.
Description
Technical field
The invention belongs to the ammeter field tests, relate in particular to a kind of electric energy meter test system and method.
Background technology
Along with constantly popularizing of electricity usage, the maintenance work of electric system is more and more heavier, has brought huge burden to Utilities Electric Co..
The existing withstand voltage calibrating and the test of having good luck are separately carried out owing to belong to high pressure and low pressure test (LPT) respectively, need repeatedly tear table, dress table and wiring open, have increased the task amount of safeguarding virtually, have brought great burden for electric-power metering department.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of electric energy meter test system, is intended to reduce the task amount of electric power maintenance, improves the work efficiency that electric system is safeguarded.
The embodiment of the invention is achieved in that a kind of electric energy meter test system, and described system comprises PC, controller, and pocket watch cabinet and electric energy meter to be measured,
The pocket watch cabinet is used for fixing electric energy meter to be measured;
PC is provided with the withstand voltage test scheme and the scheme of having good luck;
PC carries out withstand voltage test according to the withstand voltage test scheme that is provided with to the electric energy meter to be measured in the pocket watch cabinet, and draws test findings; And
PC to the test of having good luck of the electric energy meter to be measured in the pocket watch cabinet, and draws test findings according to the scheme of having good luck that is provided with.
Another purpose of the embodiment of the invention is to provide a kind of electric energy meter method of testing, and described method comprises:
PC is provided with the withstand voltage test scheme and the scheme of having good luck;
Controller carries out withstand voltage test according to the withstand voltage test scheme of setting to the electric energy meter to be measured in the pocket watch cabinet, and draws test findings according to the control of described PC;
Controller is according to the control of described PC, has good luck scheme to the test of having good luck of the electric energy meter to be measured in the pocket watch cabinet according to setting, and draws test findings.
In the embodiment of the invention, PC is provided with the withstand voltage test scheme and the scheme of having good luck, and respectively the electric energy meter to be measured in the pocket watch cabinet is carried out withstand voltage test and the test of having good luck according to the withstand voltage test scheme that is provided with and the scheme of having good luck, and draw test findings, the embodiment of the invention is carried out withstand voltage to electric energy meter and the test of having good luck automatically, and only need primary connection can finish withstand voltage and the project of having good luck, greatly improved the work efficiency of power department.
Description of drawings
Fig. 1 is the structural drawing of the electric energy meter test system that provides of the embodiment of the invention;
Fig. 2 is the process flow diagram of the electric energy meter method of testing that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, PC is provided with the withstand voltage test scheme and the scheme of having good luck, and respectively the electric energy meter to be measured in the pocket watch cabinet is carried out withstand voltage test and the test of having good luck according to the withstand voltage test scheme that is provided with and the scheme of having good luck, and draws test findings.
See also Fig. 1, this figure is the structural drawing of the electric energy meter test system that provides of the embodiment of the invention.This system comprises PC, controller, pocket watch cabinet and electric energy meter to be measured.
Wherein, the pocket watch cabinet is used for fixing electric energy meter to be measured.
Described PC is provided with the interface routine with the power marketing system, and by the table meter information of this interface routine from power marketing system downloads electric energy meter to be measured, obtains the table meter verification parameters of electric energy meter to be measured.
The embodiment of the invention has disposed multiple management information system (Management Information System, MIS) interface protocol is supported most of power marketing system software, can download table meter information from marketing system, upload the calibrating data, thereby make the present invention have very strong adaptability.
PC is provided with the withstand voltage test scheme, according to the withstand voltage test scheme that is provided with the electric energy meter to be measured in the pocket watch cabinet is carried out withstand voltage test, and draws test findings.
Preferably, the withstand voltage scheme of the embodiment of the invention comprises withstand voltage project, pressure-resistant time, leakage current threshold values, the withstand voltage project of embodiment of the invention support have voltage over the ground, electric current over the ground, voltage is to electric current, to the three-phase table can also carry out the A phase current to B phase current, A phase current to the withstand voltage test of C phase current, B phase current to the C phase current, withstand voltage limit value can be provided with 0-2000V, pressure-resistant time is set can be set 0---99 second, the leakage current threshold values can be provided with 0-10mA.
In specific implementation process, withstand voltage test has the sound and light alarm prompting, to guarantee operating personnel's safety, in the withstand voltage process, can from high tension loop, cut underproof table automatically, after withstand voltage test finished, system can carry out discharge operation automatically, guarantees system and operating personnel's safety to greatest extent.
After withstand voltage test finishes, read tested table leakage current value automatically, according to the calibrating scheme in the threshold values set contrast the conclusion of judgement withstand voltage test, the result of processing withstand voltage test.
The PC setting and the scheme of having good luck to the test of having good luck of the electric energy meter to be measured in the pocket watch cabinet, and draw test findings according to the scheme of having good luck that is provided with.
Preferably, the scheme of having good luck comprises standard scale the have good luck test method(s) and use the mark loop is realized that degree of the quick end walks neat test of test method(s), reference table of having good luck.
A, the standard scale test method(s) of having good luck:
When the electric energy meter test system of the embodiment of the invention is furnished with high-grade standard electric energy meter, can realizes fixing time, decide electric weight, decide umber of pulse and have good luck.
Wherein, fix time when having good luck, set in advance away the word time, and set the parameter when having good luck, comprise voltage, electric current, power factor after, system can read the initial electric weight of electric energy meter to be measured automatically before having good luck, and according to designated parameters output power source, the timer of system can monitor away the word time, walks after the word time finishes, electric weight when reading electric energy meter to be measured automatically and stopping, and calculate the error of having good luck of electric energy meter to be measured according to " JJG596 electronic electric energy meter vertification regulation " formula 8.
Deciding electric weight has good luck when testing, set in advance the required charge value of walking of electric energy meter to be measured, after setting the parameter of having good luck, the word time can be walked according to calculating such as the voltage of electric energy meter, electric current, the mode of connection, power factors by system, before beginning to have good luck, system can read the initial electric weight of electric energy meter to be measured automatically, has good luck and can read the electric weight that electric energy meter stops automatically after finishing, and calculate the electric energy meter to be measured error of having good luck according to " JJG596 electronic electric energy meter vertification regulation " formula 8.
Decide umber of pulse when having good luck method, both can detect the error of having good luck of electric energy meter, also can check the table constant of electric energy meter.During calibrating, parameter when having good luck (such as voltage, electric current, power factor equivalence) is set earlier, and the step-by-step counting function of start-up system, counting assembly is the umber of pulse of accumulative total electric energy meter to be measured automatically, when umber of pulse arrives the value of setting, can automatically shut down the electric current and voltage of the device of having good luck.The umber of pulse that finishes the tested table in back of supposing to have good luck is P1, and the umber of pulse of standard scale is P2, then calculates the electric energy meter to be measured test error of having good luck according to " JJG596 electronic electric energy meter vertification regulation " formula 8.
When having good luck by method of standard table, for multiple rate scale, can also specify the rate when having good luck, the embodiment of the invention is supported the DL/T-645 stipulations, can realize and electric energy meter communication to be measured, can read the time zone period information of electric energy meter to be measured automatically, time that can be by electric energy meter to be measured is set is to change the current rate of electric energy meter to be measured, thereby realize the test of having good luck, when each rate is had good luck test, calculate the test error of having good luck by rules formula (3) to each rate register.
B, the reference table test method(s) of having good luck
When the embodiment of the invention is not equipped with high-grade standard electric energy meter, adopt the reference table method to have good luck.This method can select for use 1-2 the high slightly electric energy meter of precision to show (also claiming leading table) as reference, reference table and electric energy meter to be measured are in same loop, the parallel connection of employing voltage, the mode of electric current series connection, reference table should have identical time zone period setting with electric energy meter to be measured.When the reference table method is had good luck, also can be according to fixing time, decide electric weight, decide methods such as umber of pulse and carry out, the voltage when having good luck, electric current, power factor etc. can be provided with arbitrarily,
Reference table have good luck the experiment carry out before, system can read the initial charge value of reference table and electric energy meter to be measured automatically, have good luck according to the method source of rising of having good luck of appointment then, after the condition of having good luck (time, electric weight, umber of pulse) satisfied, system can read the termination electric weight of reference table and electric energy meter to be measured automatically.The reference table method calculation of error formula of having good luck is " JJG596 electronic electric energy meter vertification regulation " formula 2.
C, use the mark loop is realized that degree of the quick end walks neat test
The embodiment of the invention can adopt relay to control separately to the voltage circuit of each electric energy meter to be measured, can make the electric weight that each electric energy meter to be measured is walked that is in the same electric current and voltage loop all inequality, thereby degree is walked neat requirement at the bottom of having realized electric energy meter to be measured.The specific implementation method is to allow the error plate of each epi-position receive N1 successively, N2 .... after the individual pulse, this epi-position of automatic cutout voltage relay is realized the mark function; Simultaneously, the embodiment of the invention has independently the mark current return, adopts phase line to export the form of little electric current to the mark electric current, have electric current and disconnect characteristics rapidly, thereby make each epi-position to end degree more approaching.The specific implementation algorithm is as follows:
S1: to all electric energy meters to be measured carry out descending sort at least, suppose that the sequence after the ordering preface is＜s1, s2 ..., Sn 〉, s1 〉=s2 〉=s3,
S2: the maximal value Δ Emax that obtains electric energy meter sign indicating number difference, according to parameters such as electric energy meter voltage to be measured, electric current, the modes of connection, calculate end degree and walk neat required shortest time Tmin, user dynamically delete list sign indicating number differs too big electric energy meter, so that the Tmin minimum saves the word time;
S3: be provided with degree at the bottom of all epi-positions walk termination registration after neat be S (S 〉=S1), calculate the electric weight Δ E1 that each electric energy meter to be measured is walked, Δ E2 ..., Δ En (Δ Ei=S-Si), obvious sequence (Δ E1, Δ E2 ..., Δ Ei) also be descending sort;
S4: the epi-position of showing end degree maximum is gone to only spent S, required electric energy is Δ E.End sign indicating number to greatest extent near only spending S and dwindling the word time as much as possible for what make ammeter, Δ E is divided into the electric energy of exporting with the common current loop and uses the electric energy that the mark current return is exported, note is made Δ E_a and Δ E_b respectively, Δ E_a=Δ E*95% wherein, Δ E_b=Δ E*5%;
S5: when having good luck, export with Imax or Ib earlier, have good luck according to the method for deciding electric weight and have good luck fast, the electric weight of having good luck is Δ E_a; Use then the output of mark electric current, adopt and to decide umber of pulse and have good luck, the electric weight of having good luck is Δ E_b, is converted into umber of pulse P according to the ammeter constant, then epi-position Control of Voltage relay can cut off the voltage output of this epi-position, the off-test of having good luck of this epi-position automatically after receiving P pulse;
S6: for remaining N-1 piece table, repeat the step of S2-S5, all can realize ammeter fast at the bottom of degree walk together.
Degree is walked the characteristics that neat method has the word time weak point at the bottom of the ammeter of the embodiment of the invention, because adopt mark loop output current, the pulse nc method for making is cut off epi-position voltage, can make the end degree of electric energy meter to be measured more approaching again.This inventive method is supported same kind (identical voltage, electric current, the mode of connection), and the end degree of the different constant tables of different brackets is walked together.
D, the configuration management of support multi-function protocol.
The embodiment of the invention is supported the test of having good luck of multiple rate scale of electronic type and electronic type multifunctional meter, supports the management of electric energy meter protocol configuration.The project that can dispose comprises the table address analysis mode, writes password, clear requirement password, messaging parameter, table login mode, clock frequency, date format, the time zone period is represented and check meter the date etc.Home brands electronic watch agreements such as DL/T645-1997 stipulations agreements, Holley, Hua Long, wasion, section land that system is pre-configured are also supported Siemens simultaneously, are liked to open up profit, ymer (EMAIL), red phase foreign brand name electronic watch agreements such as (EDMI).Having good luck when test, system can read the start-stop sign indicating number automatically according to the ammeter agreement, the ammeter time is set, read operation such as time zone period.
The embodiment of the invention is supported the continuous inspection of breakpoint.In system's operational process, when running into unexpected power failure, user and stopping fortuitous event such as calibrating, the system failure, system can be out of service, after resuming operation, native system can continue to have good luck from calibrating last time point automatically, and does not need from the beginning to experimentize, and has greatly improved calibrating efficient.
The embodiment of the invention has very strong data management function, controller can use by separating computer, can preserve the result of each electric energy meter withstand voltage test to be measured, the software kit of system of the present invention is preserved test result automatically, diversified query manipulation interface is provided, can carry out combined queries according to a plurality of conditions such as calibrating date, testing person, table type, table models, also can print verification result and generate form.
In specific implementation process, please continue to consult Fig. 1, Ji Yuan (CL191B) when system also comprises standard scale (CL311V2), power source (CL303), precision.
The pocket watch cabinet also comprises Error Calculation plate (CL188G), alarm for high voltage pilot lamp, calibrating pilot lamp, multiplex pulse sampling thief, scram button, safe insulating glass door etc. except that treating meter hanging frame.
PC is made up of primary control program, inquiry Printing Program, data base backup recovery instrument, multi-function protocol configuration tool, MIS interface routine etc.The primary control program of PC is finished the typing of electric energy meter parameter, debugging in advance, withstand voltage test, the functions such as test, multi-functional project testing of having good luck, and can also finish subsidiary functions such as system configuration, data audit deposit.
The embodiment of the invention also provides a kind of electric energy meter method of testing, sees also Fig. 2.
In step S101, electric energy meter to be measured is placed on pocket watch cashier's office in a shop.
In step S102, PC is provided with the withstand voltage test scheme and the scheme of having good luck;
In step S103, PC obtains the table meter information of tested electric energy meter, the verification parameters of resolution table meter information;
In step S104, controller carries out withstand voltage test according to the withstand voltage test scheme of setting to the electric energy meter to be measured in the pocket watch cabinet according to the control of described PC.
In step S105, controller is according to the control of described PC, has good luck scheme to the test of having good luck of the electric energy meter to be measured in the pocket watch cabinet according to setting.
Certainly, step S104 and step S105 be in no particular order the order.
In step S106, obtain test findings
Preferably, the voltage circuit of each electric energy meter to be measured adopts relay to control separately.
In specific implementation process,, after the system recovery operation, will proceed withstand voltage test or have good luck test from the calibrating point before stopping if stopping in system's operational process.
In the embodiment of the invention, PC is provided with the withstand voltage test scheme and the scheme of having good luck, and respectively the electric energy meter to be measured in the pocket watch cabinet is carried out withstand voltage test and the test of having good luck according to the withstand voltage test scheme that is provided with and the scheme of having good luck, and draw test findings, the embodiment of the invention is carried out withstand voltage to electric energy meter and the test of having good luck automatically, and only need primary connection can finish withstand voltage and the project of having good luck, greatly improved the work efficiency of power department.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electric energy meter test system is characterized in that, described system comprises PC, controller, and pocket watch cabinet and at least one electric energy meter to be measured,
The pocket watch cabinet is used for fixing electric energy meter to be measured;
PC is provided with the withstand voltage test scheme and the scheme of having good luck;
PC carries out withstand voltage test according to the withstand voltage test scheme that is provided with to the electric energy meter to be measured in the pocket watch cabinet, and draws test findings; And
PC to the test of having good luck of the electric energy meter to be measured in the pocket watch cabinet, and draws test findings according to the scheme of having good luck that is provided with.
2. electric energy meter test system as claimed in claim 1 is characterized in that described PC is provided with the interface routine with the power marketing system.
3. electric energy meter test system as claimed in claim 2 is characterized in that, described PC obtains the table meter verification parameters of electric energy meter to be measured by the table meter information of described interface routine from power marketing system downloads electric energy meter to be measured.
4. electric energy meter test system as claimed in claim 1 is characterized in that, the voltage circuit of each electric energy meter to be measured adopts relay to control separately.
5. electric energy meter test system as claimed in claim 1 is characterized in that, the described test of having good luck comprises the test of having good luck of multiple rate scale of electronic type and electronic type multifunctional meter.
6. electric energy meter test system as claimed in claim 1 is characterized in that, if stop in system's operational process, after the system recovery operation, will proceed withstand voltage test or have good luck test from the calibrating point before stopping.
7. an electric energy meter method of testing is characterized in that, described method comprises:
PC is provided with the withstand voltage test scheme and the scheme of having good luck;
Controller carries out withstand voltage test according to the withstand voltage test scheme of setting to the electric energy meter to be measured in the pocket watch cabinet, and draws test findings according to the control of described PC;
Controller is according to the control of described PC, has good luck scheme to the test of having good luck of the electric energy meter to be measured in the pocket watch cabinet according to setting, and draws test findings.
8. electric energy meter method of testing as claimed in claim 7 is characterized in that, after described PC was provided with the step of the withstand voltage test scheme and the scheme of having good luck, described method also comprised:
PC obtains the table meter information of tested electric energy meter, the verification parameters of resolution table meter information;
9. electric energy meter method of testing as claimed in claim 7 is characterized in that, the voltage circuit of each electric energy meter to be measured adopts relay to control separately.
10. electric energy meter method of testing as claimed in claim 7 is characterized in that, if stop in system's operational process, after the system recovery operation, will proceed withstand voltage test or have good luck test from the calibrating point before stopping.
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| CN200810241765A CN101770007A (en) | 2008-12-31 | 2008-12-31 | Electric energy meter test system and method thereof |
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