CN101477726A - Single-phase pre-payment electric energy meter checking device and checking method thereof - Google Patents
Single-phase pre-payment electric energy meter checking device and checking method thereof Download PDFInfo
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- CN101477726A CN101477726A CNA2009101050045A CN200910105004A CN101477726A CN 101477726 A CN101477726 A CN 101477726A CN A2009101050045 A CNA2009101050045 A CN A2009101050045A CN 200910105004 A CN200910105004 A CN 200910105004A CN 101477726 A CN101477726 A CN 101477726A
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Abstract
The invention provides a device for inspecting a single-phase prepayment watt-hour meter and an inspection method thereof. The device comprises a control system, a program control single-phase power source, a single-phase multifunctional standard meter, an error calculation/displaying device and a frame for hanging the watt-hour meter, wherein, the watt-hour meter to be inspected is arranged on the frame for hanging the watt-hour meter; and a prepayment function testing module is further included in the device, and is connected in parallel on a current terminal of the watt-hour meter to be inspected. When the single-phase prepayment watt-hour meter undergoes a test for the function of prepayment, the prepayment function testing module ensures that the power source works normally during tripping and closing of the single-phase prepayment watt-hour meter, so that the function can be tested effectively.
Description
[technical field]
The present invention relates to the single-phase pre-payment electric energy meter verifying attachment and the method for inspection, this device and method can ammeter be to close a floodgate or trip not influence the work of power source when the test pre paid functionality, finishes the test of pre paid functionality simultaneously efficiently.
[background technology]
In electric system, various electric energy meters need carry out verification to its electric energy metering error before networking, the electric energy meter that electric energy error is qualified just allows to network and uses, therefore when the verification single-phase pre-payment electric energy meter, need test the combined floodgate and the trip avoidance function of electric energy meter.
But electric energy meter is in testing process; do not allow to occur current open; because can not detect the state of electric energy meter in the time of current open; can't judge whether electric energy meter is qualified, therefore power source often can not normally carry out test because of the protection cisco unity malfunction when single-phase pre-payment electric energy meter trips.
[summary of the invention]
Based on this, in order to solve the problem of current return open circuit in the pre paid functionality test, a kind of single-phase pre-payment electric energy meter verifying attachment of invention, this device can be avoided the problem of current open in test loop, guarantees carrying out smoothly of single-phase pre-payment electric energy meter test.
The present invention is achieved in that
A kind of single-phase pre-payment electric energy meter verifying attachment, it comprises control system, program control single-phase power source, the single-phase multifunctional standard scale, Error Calculation/display and electric energy meter meter hanging frame, tested electric energy meter is arranged on the electric energy meter meter hanging frame, it is characterized in that this device includes the pre paid functionality tentative module, the pre paid functionality tentative module is connected between tested electric energy meter and the program control single-phase power source, when carrying out the test of single-phase pre-payment electric energy meter pre paid functionality, guarantee in single-phase pre-payment electric energy meter tripping operation with when closing a floodgate that by the pre paid functionality tentative module power source can normally work, guarantee that this function is effectively tested.
At this moment, program control single-phase power source output AC voltage, current delivery are given described single-phase multifunctional standard scale and tested electric energy meter, single-phase multifunctional standard scale outputting standard electrical energy pulse, and tested electric energy meter is exported tested electrical energy pulse.
Error Calculation/standard electric the energy impulse of display collection single-phase multifunctional standard scale output and the tested electrical energy pulse of tested electric energy meter output also calculate tested electric energy meter electric energy error.
Described pre paid functionality tentative module; it includes current open indicating member and current open protected location; current open indicating member and current open protected location are connected together, and electric current is exported from the current open protected location from the input of current open protected location.
Described current open protected location is the current open holding circuit; itself and program control single-phase power source, Error Calculation/display constitute the loop; when single-phase pre-payment electric energy meter is opened a way, can guarantee the unimpeded of whole loop, can not cause the power-off protection in program control single-phase power source.
Described current open indicating member, it includes testing circuit, and testing circuit detects the open-circuit condition of single-phase pre-payment electric energy meter, and is reported to control system.
Electric current flows through from prepayment meter under the normal condition, the open-circuit condition of pre paid functionality tentative module standby current.When prepayment meter trips; the at first current open protected location of pre paid functionality tentative module work; prevent that program control single-phase power source from protecting because of current open; the testing circuit of opening a way simultaneously in the indicating member detects the open-circuit condition of prepayment meter and is reported to control system, is judged by control system whether the work of prepayment meter is correct.When prepayment meter closed a floodgate, the testing circuit in the open circuit indicating member detected the open-circuit condition disappearance of prepayment meter and is reported to control system, is judged by control system whether the work of prepayment meter is correct.
Described pre-payment tentative module can be tested to single-phase pre-payment and non-prepayment meter simultaneously.
Described Error Calculation/display comprises counter and timer, counter is gathered standard electric energy impulse and tested electrical energy pulse and is added up its number, the pulsewidth in continuous each cycle of standard electric energy impulse is measured in the timer collection, realizes the electric energy error value of the tested electric energy meter of accurate Calculation.
A kind of method of inspection of single-phase pre-payment electric energy meter calibration equipment said method comprising the steps of:
Step 1: control system is controlled program control single-phase power source output voltage, current signal by examination requirements, and starts Error Calculation/display and pre paid functionality tentative module;
Step 2: when inside residue power consumption that prepayment meter is set or agreement overdraw power consumption were used up, prepayment meter can directly or be exported trip signal and cut off customer charge;
Step 3: the payment function tentative module starts, and forms current return, guarantees that single-phase program control power source works smoothly;
Step 4: when prepayment meter charges into the new electric weight of purchasing, and when purchasing electric weight greater than the arrearage electric weight, prepayment meter closes a floodgate, and the pre paid functionality tentative module detects the "on" position of prepayment meter.
The method of inspection of described single-phase pre-payment electric energy meter calibration equipment, during load limit amount that continuous 5 minutes of the power of program control single-phase power source output presets greater than prepayment meter, prepayment meter can directly or be exported trip signal and cut off customer charge, and the pre paid functionality tentative module detects the tripped condition of prepayment meter.
The method of inspection of described single-phase pre-payment electric energy meter calibration equipment, during load limit amount that continuous 1 minute of the power of program control single-phase power source output presets less than prepayment meter, prepayment meter closes a floodgate, and the pre paid functionality tentative module detects the "on" position of prepayment meter.
The present invention adopts the pre paid functionality tentative module that the opening a sluice gate of single-phase pre-payment electric energy meter, "on" position are in time detected; guaranteed the unimpeded of whole loop in the detection system; avoided program control single-phase power source because the power-off protection that the prospects open-circuit condition carries out can be carried out the combined floodgate and the tripping operation test of single-phase pre-payment electric energy meter effectively.
Description of drawings
Fig. 1 is a structured flowchart of the present invention,
Fig. 2 is the structural drawing of pre paid functionality tentative module.
Embodiment
Below, in conjunction with the accompanying drawings, enforcement of the present invention is elaborated.
Shown in Figure 1, the present invention is by control system, program control single-phase power source, single-phase multifunctional standard scale, Error Calculation/display and electric energy meter meter hanging frame, the pre paid functionality tentative module constitutes, control system is the PC control system, it controls the state of whole detection system, and program control single-phase power source, single-phase many power standards table, Error Calculation/display, tested prepayment meter (being called for short tested table) constitute a loop.
Wherein, pre paid functionality tentative module and tested table are connected in the loop, and the opening a sluice gate of tested table, combined floodgate situation are detected in real time, and be reported to the PC control system.
Program control single-phase power source output AC electrical transmission is given single-phase multifunctional standard scale and the tested electric energy meter that is inserted on the electric energy meter meter hanging frame, make single-phase multifunctional standard scale and tested electric energy meter produce standard electric energy impulse and tested electrical energy pulse respectively, Error Calculation/display is gathered standard electric energy impulse and tested electrical energy pulse and is added up its number, gathers the pulsewidth in each cycle of measuring continuous standard electric energy impulse, thereby accurate Calculation is by the pulse error amount of school electric energy meter.When the test pre paid functionality, program control single-phase power source output AC electrical transmission is given single-phase multifunctional standard scale and the tested prepayment meter that is inserted on the electric energy meter meter hanging frame, the break function and the load controlling function of test prepayment meter.
Shown in Figure 2, be the structural representation of pre paid functionality tentative module.Shown in the figure, the pre paid functionality tentative module includes current open indicating member and current open protected location, current open indicating member and current open protected location are connected together, and electric current is exported from the current open protected location from the input of current open protected location; The current open protected location is the current open holding circuit; itself and program control single-phase power source, Error Calculation/display constitute the loop, the current open indicating member, and it includes testing circuit; testing circuit detects the open-circuit condition of single-phase pre-payment electric energy meter, and is reported to control system.
When prepayment meter trips; the at first current open holding circuit of pre paid functionality tentative module work; prevent that program control single-phase power source from protecting because of current open; the testing circuit of opening a way simultaneously in the indicating member detects the open-circuit condition of prepayment meter and is reported to control system, is judged by control system whether the work of prepayment meter is correct.When prepayment meter closed a floodgate, the testing circuit in the open circuit indicating member detected the open-circuit condition disappearance of prepayment meter and is reported to control system, is judged by control system whether the work of prepayment meter is correct.
Therefore, the method for calibration of single-phase pre-payment electric energy meter calibration equipment comprises the step of two parts:
(1) outage control function
Step 1: control system is controlled program control single-phase power source output voltage, current signal by examination requirements, and starts Error Calculation/display and pre paid functionality tentative module;
Step 2: when inside residue power consumption that prepayment meter is set or agreement overdraw power consumption are used up, prepayment meter can directly or be exported trip signal and cut off customer charge, force users is purchased electricity, and the pre paid functionality tentative module detects the tripped condition of pre-paying kilowatt-hour meter;
Step 3: when prepayment meter charges into the new electric weight of purchasing, and when purchasing electric weight greater than the arrearage electric weight, pre-paying kilowatt-hour meter closes a floodgate, and the pre paid functionality tentative module detects the "on" position of pre-paying kilowatt-hour meter.
(2) load controlling function
Step 1: control system is controlled program control single-phase power source output voltage, current signal by examination requirements, and starts Error Calculation/display;
Step 2: when load limit amount that continuous 5 minutes of the power of program control single-phase power source output presets greater than prepayment meter, prepayment meter can directly or be exported trip signal and cut off customer charge, and the pre paid functionality tentative module detects the tripped condition of pre-paying kilowatt-hour meter;
Step 3: when load limit amount that continuous 1 minute of the power of program control single-phase power source output presets less than prepayment meter, pre-paying kilowatt-hour meter closes a floodgate, and the pre paid functionality tentative module detects the "on" position of pre-paying kilowatt-hour meter.
Facts have proved that above-mentioned apparatus and method can prevent effectively that program control single-phase power source from protecting because of current open, guarantee that the test of electric energy meter is carried out smoothly.
Claims (8)
1, a kind of single-phase pre-payment electric energy meter verifying attachment, it comprises control system, program control single-phase power source, single-phase multifunctional standard scale, Error Calculation/display and electric energy meter meter hanging frame, tested electric energy meter is arranged on the electric energy meter meter hanging frame, it is characterized in that this device includes the pre paid functionality tentative module, the pre paid functionality tentative module is connected between the current terminal of tested electric energy meter.
2, single-phase pre-payment electric energy meter verifying attachment as claimed in claim 1; it is characterized in that described pre paid functionality tentative module; it includes current open indicating member and current open protected location; current open indicating member and current open protected location are connected together; only carry out the trip avoidance function measuring current current open protected location of just flowing through, and provide the open-circuit condition signal to the current open indicating member by the current open protected location at the single-phase pre-payment ammeter.
3, single-phase pre-payment electric energy meter verifying attachment as claimed in claim 1 is characterized in that described current open protected location is the current open holding circuit, and itself and program control single-phase power source, Error Calculation/display constitute the loop.
4, single-phase pre-payment electric energy meter verifying attachment as claimed in claim 1 is characterized in that described current open indicating member, and it includes testing circuit, and testing circuit detects the open-circuit condition of single-phase pre-payment electric energy meter, and is reported to control system.
5, single-phase pre-payment electric energy meter verifying attachment as claimed in claim 1, it is characterized in that described Error Calculation/display comprises counter and timer, counter is gathered standard electric energy impulse and tested electrical energy pulse and is added up its number, the pulsewidth in continuous each cycle of standard electric energy impulse is measured in the timer collection, realizes the electric energy error value of the tested electric energy meter of accurate Calculation.
6, a kind of method of inspection of single-phase pre-payment electric energy meter said method comprising the steps of:
Step 1: control system is controlled program control single-phase power source output voltage, current signal by examination requirements, and starts Error Calculation/display and pre paid functionality tentative module;
Step 2: when inside residue power consumption that prepayment meter is set or agreement overdraw power consumption were used up, prepayment meter can directly or be exported trip signal and cut off customer charge;
Step 3: the payment function tentative module starts, and forms current return, guarantees that single-phase program control power source works smoothly;
Step 4: when prepayment meter charges into the new electric weight of purchasing, and when purchasing electric weight greater than the arrearage electric weight, prepayment meter closes a floodgate, and the pre paid functionality tentative module detects the "on" position of prepayment meter.
7, the method for inspection of single-phase pre-payment electric energy meter as claimed in claim 6, during the load limit amount that it is characterized in that presetting greater than prepayment meter when continuous 5 minutes of the power of program control single-phase power source output, prepayment meter can directly or be exported trip signal and cut off customer charge, and the pre paid functionality tentative module detects the tripped condition of prepayment meter.
8, the method for inspection of single-phase pre-payment electric energy meter as claimed in claim 6, during the load limit amount that it is characterized in that presetting less than prepayment meter when continuous 1 minute of the power of program control single-phase power source output, prepayment meter closes a floodgate, and the pre paid functionality tentative module detects the "on" position of prepayment meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101050045A CN101477726B (en) | 2009-01-15 | 2009-01-15 | Single-phase pre-payment electric energy meter checking device and checking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009101050045A CN101477726B (en) | 2009-01-15 | 2009-01-15 | Single-phase pre-payment electric energy meter checking device and checking method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477726A true CN101477726A (en) | 2009-07-08 |
| CN101477726B CN101477726B (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101050045A Expired - Fee Related CN101477726B (en) | 2009-01-15 | 2009-01-15 | Single-phase pre-payment electric energy meter checking device and checking method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654573A (en) * | 2012-05-28 | 2012-09-05 | 辽宁省电力有限公司抚顺供电公司 | Verification device for single-phase electric energy meters |
| CN109118656A (en) * | 2018-08-20 | 2019-01-01 | 成都博高信息技术股份有限公司 | intelligent meter and energy control center |
-
2009
- 2009-01-15 CN CN2009101050045A patent/CN101477726B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654573A (en) * | 2012-05-28 | 2012-09-05 | 辽宁省电力有限公司抚顺供电公司 | Verification device for single-phase electric energy meters |
| CN109118656A (en) * | 2018-08-20 | 2019-01-01 | 成都博高信息技术股份有限公司 | intelligent meter and energy control center |
| CN109118656B (en) * | 2018-08-20 | 2021-09-14 | 成都博高信息技术股份有限公司 | Intelligent meter and energy control center |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101477726B (en) | 2010-08-25 |
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Granted publication date: 20100825 Termination date: 20210115 |