CN107621622A - A kind of three-phase low-voltage electric energy meter field check meter - Google Patents
A kind of three-phase low-voltage electric energy meter field check meter Download PDFInfo
- Publication number
- CN107621622A CN107621622A CN201710849160.7A CN201710849160A CN107621622A CN 107621622 A CN107621622 A CN 107621622A CN 201710849160 A CN201710849160 A CN 201710849160A CN 107621622 A CN107621622 A CN 107621622A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- phase
- energy meter
- meter
- current transformer
- Prior art date
Links
- 239000004973 liquid crystal related substances Substances 0.000 claims abstract description 12
- 210000001847 Jaw Anatomy 0.000 claims abstract description 4
- 238000010521 absorption reactions Methods 0.000 claims abstract description 4
- 238000006243 chemical reactions Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000004166 bioassay Methods 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reactions Methods 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 230000003111 delayed Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Abstract
Description
Technical field
The present invention relates to electronic technology field, especially a kind of three-phase low-voltage electric energy meter field check meter.
Background technology
For a long time, many power consumers be present by slowing down the phenomenons of the various mode stealings such as electric energy meter, to power supply Door causes huge economic loss, and three-phase low-voltage electric energy meter field check meter is a kind of instrumentation, can be applied to basic unit's confession Electric department carries out field test in the case where not having a power failure, do not take out stitches for the three-phase low-voltage electric energy meter of industrial and mining enterprises, so as to sentence Whether the electric energy meter metering for determining user is accurate.
The content of the invention
The present invention devises a kind of three-phase low-voltage electric energy meter field check meter, can realize and three-phase low-voltage electric energy meter is measured Whether field test is accurately carried out in the case where not having a power failure, do not take out stitches.
The technical solution adopted for the present invention to solve the technical problems is：A kind of three-phase low-voltage electric energy meter field check meter, Including three-phase hook type current transformer, threephase potential transformer, three-phase electrical energy computation chip, single-chip microcomputer, photoelectric sampler, liquid crystal Display, keyboard, mini-printer, described three-phase hook type current transformer are three 100A jaw type precision current mutual inductance Device, described threephase potential transformer are three 380V accurate voltage mutual inductor, and described three-phase electrical energy computation chip is ADE7758, described single-chip microcomputer are AT89S51, and described photoelectric sampler is absorption type electric energy meter detection photoelectric sampler, Described liquid crystal display is character formula liquid crystal display LCD1602, and described keyboard is the determinant keyboard of 16 buttons, institute The mini-printer stated is the embedded micro thermal printer with TTL serial ports.
The invention has the advantages that：The present invention is reasonable in design, and cost is cheap, and accuracy of detection is high, may be implemented in not Power failure, field test is carried out to three-phase low-voltage electric energy meter in the case of not taking out stitches.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The present invention is described in detail below below in conjunction with the accompanying drawings.
As shown in drawings, described single-chip microcomputer 1 respectively with three-phase electrical energy computation chip 4, pulse input interface 6, liquid crystal Show that device 7, keyboard 8, mini-printer 9 are connected.Described three-phase electrical energy computation chip 4 is ADE7758, suitable for metering various three Active and reactive and apparent electric energy under the conditions of phase configuration, and voltage, current effective value are provided；Described pulse input interface 6 is Phototube Coupling and the step-by-step counting input interface of level conversion function are had concurrently using what high speed photo coupling 6N137 was formed, utilize monolithic The pulse number that counter inside machine exports to photoelectric sampler 5 or tested electronic electric energy meter counts.
Described three-phase hook type current transformer 2 is three 100A jaw type precision current transformer, convenient not have a power failure, no Wiring is tested；Described threephase potential transformer 3 is three 380V accurate voltage mutual inductor, suitable for three-phase three-wire system Electric power system；Described photoelectric sampler 5 is absorption type electric energy meter detection photoelectric sampler, for entering to rotating disc type electric energy meter Performing check；Described liquid crystal display 7 is character formula liquid crystal display LCD1602, for split screen display available relevant parameter and measurement As a result；Described mini-printer 9 is the embedded micro thermal printer with TTL serial ports, for printing assay.
Described keyboard 8 is the determinant keyboard of 16 buttons, respectively 10 " numerical key 0-9 ", 1 " settings " key with 1 " confirmation " key, for inputting every kilowatt hour umber of pulse of tested electric energy meter and count pulse number operation during automatic examine；1 Individual " automatic " key, the key is pressed when examining automatically, start automatic inspection, reach pre- from the umber of pulse of the input of pulse input interface 6 If during umber of pulse, it is automatically stopped and calculates the error for showing tested electric energy meter；1 " manual " key, is opened when pressing " manual " key Begin to examine, stop examining and calculating the error for showing tested electric energy meter when pressing " manual " key again；1 " parameter is checked " Key, for retrieving for examination the parameters such as electric current, the virtual value of voltage and power factor；1 " printing " key, the printing for assay； The reset that one RESET key is used for single-chip microcomputer operates.
, it is necessary to pre-enter every kilowatt hour umber of pulse of tested electric energy meter and counting during automatic examine before starting to examine Umber of pulse, every kilowatt hour umber of pulse that " setting " key display prompts input tested electric energy meter first is pressed, according to tested electric energy The nameplate data of table utilize the corresponding data of digital key input, press the memory that " confirmation " key is stored it in inside single-chip microcomputer In, while display prompts input automatic count pulse number when examining, and the data needed using digital key input, press again " confirmation " key is stored and completes to set.
During automatic inspection, " automatic " key is pressed, starts to measure actual power, while to photoelectric sampler or electronic watt-hour The umber of pulse of table output is counted, and when counting down to predetermined pulse number, stops the metering of actual power, using actual power as base Quasi- value, compared with the electric energy that the conversion of predetermined pulse number is drawn, the relative error of tested electric energy meter is calculated and displayed.
" manual " key during manual inspections, is pressed, starts to measure actual power, while to photoelectric sampler or electronic watt-hour The umber of pulse of table output is counted, and when pressing " manual " key again, stops the metering of actual power, using actual power as base Quasi- value, compared with the electric energy that the umber of pulse conversion counted to get is drawn, the relative of tested electric energy meter is calculated and displayed and misses Difference.
Hook type current transformer is influenceed by magnetic circuit opening, and the signal of output has delayed phase phenomenon, and size of current is not Phase with hysteresis is also differed, it is necessary to section linear compensating be carried out to power factor according to size of current, to improve what is examined Accuracy.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710849160.7A CN107621622A (en) | 2017-09-20 | 2017-09-20 | A kind of three-phase low-voltage electric energy meter field check meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710849160.7A CN107621622A (en) | 2017-09-20 | 2017-09-20 | A kind of three-phase low-voltage electric energy meter field check meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107621622A true CN107621622A (en) | 2018-01-23 |
Family
ID=61090260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710849160.7A CN107621622A (en) | 2017-09-20 | 2017-09-20 | A kind of three-phase low-voltage electric energy meter field check meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107621622A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2938136Y (en) * | 2006-08-29 | 2007-08-22 | 宋国元 | Electric energy field detector with virtual loading |
| CN106093841A (en) * | 2016-08-25 | 2016-11-09 | 海盐星创电子有限公司 | A kind of hand-held electric energy meter on-site calibrator |
| CN205941878U (en) * | 2016-08-25 | 2017-02-08 | 海盐星创电子有限公司 | On --spot check gauge of hand -held type electric energy meter |
-
2017
- 2017-09-20 CN CN201710849160.7A patent/CN107621622A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2938136Y (en) * | 2006-08-29 | 2007-08-22 | 宋国元 | Electric energy field detector with virtual loading |
| CN106093841A (en) * | 2016-08-25 | 2016-11-09 | 海盐星创电子有限公司 | A kind of hand-held electric energy meter on-site calibrator |
| CN205941878U (en) * | 2016-08-25 | 2017-02-08 | 海盐星创电子有限公司 | On --spot check gauge of hand -held type electric energy meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103698695B (en) | The method of testing that a kind of multifunctional high pressure breaker electrical characteristic test device is performed | |
| CN202583449U (en) | Whole detection device of intelligent transformer station electric energy metering device | |
| CN100462729C (en) | On-line monitoring method for winding turn-to-turn short-circuit of distribution generator stator based on multi-criterion mixing | |
| CN102305922B (en) | On-load detection method and device for intelligent optical fiber electric energy meter in substation | |
| CN201444193U (en) | Comprehensive error detection device used for digital electric energy measuring device | |
| CN201117093Y (en) | Converting station accumulator remote monitoring device | |
| CN102087352A (en) | Three-phase intelligent watt-hour meter inspection device and method | |
| CN202794334U (en) | Wide-range direct current standard electric energy meter | |
| CN201378204Y (en) | Automatic detecting and metrological characteristic analyzing device for energy meter standard devices | |
| CN103926553B (en) | Self-service single-phase electric energy meter calibrates for error devices and methods therefor | |
| CN201173965Y (en) | Core technical parameter automatic test system of electric project DC power source equipment | |
| CN104345294B (en) | A kind of electric energy meter dynamic performance and testing | |
| CN104808168A (en) | Rapid electric energy meter verification method based on segmented current technology | |
| CN202710744U (en) | Main station structure of station electrical energy metering device monitoring management system | |
| CN104656015B (en) | The desk-top test equipment of magnetic valve performance parameter | |
| CN103513211A (en) | Detecting device for alternating-current impedance tester | |
| CN204495970U (en) | Energy-saving of motor system test platform | |
| CN201352162Y (en) | Transformer temperature calibration device | |
| CN103149546B (en) | The field integrated tester of a kind of portable electric energy measuring terminal | |
| CN101872004A (en) | Calibrating test device of electronic type transformer checking instrument | |
| CN103424732A (en) | Detection device and detection method for direct current electric energy meter | |
| CN201589855U (en) | Detection device of relay protection testing device | |
| CN104569902A (en) | Digital type electric energy meter power consumption measuring device and method | |
| CN201859213U (en) | Intelligent energy meter verifying device | |
| CN103199514A (en) | Method of eliminating ferromagnetic resonances |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180123 |
|
| WD01 | Invention patent application deemed withdrawn after publication |