CN202948129U - Tester for voltage withstanding test apparatus of electric energy meter - Google Patents
Tester for voltage withstanding test apparatus of electric energy meter Download PDFInfo
- Publication number
- CN202948129U CN202948129U CN 201220683034 CN201220683034U CN202948129U CN 202948129 U CN202948129 U CN 202948129U CN 201220683034 CN201220683034 CN 201220683034 CN 201220683034 U CN201220683034 U CN 201220683034U CN 202948129 U CN202948129 U CN 202948129U
- Authority
- CN
- China
- Prior art keywords
- voltage
- electric energy
- processor
- energy meter
- test device
- 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.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 238000005070 sampling Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract 3
- 230000005693 optoelectronics Effects 0.000 abstract 3
- 238000005259 measurement Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000012467 final product Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a tester for the voltage withstanding test apparatus of an electric energy meter, comprising a microprocessor, an optoelectronic isolation circuit, a high precision ADC, a voltage processor, a current processor, an AC/DC identifier and two sampling circuits, wherein the microprocessor is connected with the optoelectronic isolation circuit, the optoelectronic isolation circuit is connected with the voltage processor, the high precision ADC and the current processor, the high precision ADC is connected with the voltage processor and the current processor, and the voltage processor and the current processor are connected with the two sampling circuits respectively. The tester for the voltage withstanding test apparatus of an electric energy meter can ensure the voltage withstanding test apparatus to normally operate, standardizes the maintenance and management of voltage withstanding test apparatuses, and can increase the metering accuracy and reliability of an electric power system.
Description
Technical field
The utility model relates to a kind of proving installation, particularly a kind of electric energy meter Withstand test device tester.
Background technology
Whether withstand voltage test (claiming again dielectric withstanding voltage tests) is under certain condition to being applied the voltage of stipulating in relevant criterion by test specimen, puncture with it and judge by whether requirement up to specification of test specimen.Withstand voltage test and flash test are all the conventional projects that checks carried out dielectric strength by test specimen, are mainly whether insulating material and the clearance for insulation (being material, design technology, assembly technology etc.) that checks product meets the requirements.Whether the result of withstand voltage test only illustrates by test specimen can bear the voltage of regulation, in the situation that qualified general can be to do not caused the damage of unrepairable by test specimen.Withstand voltage test is the important means of estimating by test specimen protection against electric shock and anti-ability on fire, is one of elementary item of safety test.
We had begun the electric energy meter Withstand test device of Hunan Province measurement of power department is comprehensively checked work in 2007, found that a large amount of devices all can not reach the requirement of JJG795-2004 " withstands voltage tester vertification regulation " through its technical indicator after long-time running.Therefore, in the urgent need to the method for calibration that proposes reasonable and develop corresponding calibration equipment, to be used for that Withstand test device is carried out test job, in the situation that also there is no to occur applicable detecting instrument on market, we have analyzed the technical characterstic of Withstand test device, and have designed Circuits System according to existing appointed condition.
Summary of the invention
Technical problem to be solved in the utility model is, not enough for prior art, a kind of electric energy meter Withstand test device tester is provided, guarantee the normal operation of Withstand test device, and the maintenance management of these devices of standard, correctness, the reliability of raising measurement of power.
for solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of electric energy meter Withstand test device tester, comprise microprocessor, photoelectric isolating circuit, high-precision adc, voltage processor, current processor, AC/DC recognizer and two sample circuits, described microprocessor is connected with described photoelectric isolating circuit, described photoelectric isolating circuit and described voltage processor, high-precision adc, current processor connects, described high-precision adc and described voltage processor, current processor connects, described voltage processor, each is connected current processor with a described sample circuit.
Compared with prior art, the beneficial effect that the utility model has is: the utility model electric energy meter Withstand test device tester is take high performance microprocessor as core, be aided with high-precision digital to analog converter (ADC) and other peripheral circuit, make the fast fast ﹑ of measurement accurate.Input impedance makes the external environment humiture reduce to minimum to the impact of apparatus measures up to 200M Ω.The utility model can guarantee the normal operation of Withstand test device, and the maintenance management of these devices of standard, improves correctness, the reliability of measurement of power.
Description of drawings
Fig. 1 is the utility model one example structure block diagram;
Fig. 2 is the utility model one a kind of voltage processor circuit theory diagrams of embodiment;
Fig. 3 is the another kind of voltage processor circuit theory diagrams of the utility model one embodiment;
Fig. 4 is the utility model one a kind of current processor circuit theory diagrams of embodiment;
Fig. 5 is the another kind of current processor circuit theory diagrams of the utility model one embodiment.
Embodiment
As shown in Figure 1, the utility model one embodiment comprises microprocessor, photoelectric isolating circuit, high-precision adc, voltage processor, current processor, AC/DC recognizer and two sample circuits, described microprocessor is connected with described photoelectric isolating circuit, described photoelectric isolating circuit is connected with described voltage processor, high-precision adc, current processor, described high-precision adc is connected with described voltage processor, current processor, and described voltage processor, current processor respectively are connected with a described sample circuit.
Two sample circuits are respectively used to the sampling of voltage dividing potential drop and current sample.
Described microprocessor is connected to liquid crystal display; Described microprocessor adopts the AT89C52 chip; Described high-precision adc adopts the TCL7135 chip; Described sample circuit adopts the LF398 chip; Described AC/DC recognizer adopts the LF411 chip.
As shown in Figure 2, voltage processor comprises bleeder circuit and the voltage table that is comprised of two resistance in seriess, and described voltage table is in parallel with a resistance of described bleeder circuit.
Can also adopt voltage processor as shown in Figure 3, this voltage processor comprises voltage transformer (VT) and voltage table, the described voltage transformer secondary side of described voltage table access in parallel.
Realize the measurement to output voltage error, a voltage measurement system (being voltage processor) more than 0.2 grade must be arranged.Because the error of voltage table can be ignored, so only needing 0.2 grade, the grade of bleeder circuit or voltage transformer (VT) gets final product.
The voltage processor measurement parameter is as follows:
Measurement range: 0.2 ~ 10KV (direct current or AC value)
Accuracy: AC:0.2～10KV ± 2%
DC：0.3～10KV ±2％
Input impedance: 200M Ω
Frequency range: DC AC47～63Hz.
As shown in Figure 4, described current processor comprises milliampere reometer and adjustable resistance, described milliampere of reometer and the series connection of described adjustable resistance.
Can also adopt current processor as shown in Figure 5, this current processor comprises a milliampere reometer, current transformer and adjustable resistance, described milliampere of reometer is connected with described current transformer primary side, the described Current Transformer Secondary side of described adjustable resistance access in parallel.
Realize the measurement to the leakage current setting value error, as long as the current measurement system (being current processor) more than 0.2 grade, the reometer more than 0.2 grade that so only needs to connect in high tension loop gets final product.
The current processor measurement parameter is as follows:
Measurement range: 0.02～2.000～20.00～200.00mA
Accuracy: AC:0.02～2.000mA ± 2%
2～20.00mA ±2％
20.00～200.00mA ±2％
DC： ±0.02～±2.000mA ±2％
±2～±20.00mA ±2％
±20.00～±200.00mA ±2％
The utility model adopts the LCD display of the high brightness of 16X2.
Electric energy meter Withstand test device output HIGH voltage is through dividing potential drop, and output current becomes the voltage signal of easily measuring after sampling.Deliver to high-precision adc and carry out analog to digital conversion after voltage processor processing and sampling A/D chip sampling maintenance.Microprocessor reads digital quantity and calculates and process.At last by LCD display display measurement result.
Claims (10)
1. electric energy meter Withstand test device tester, comprise microprocessor, photoelectric isolating circuit, high-precision adc, voltage processor, current processor, AC/DC recognizer and two sample circuits, it is characterized in that, described microprocessor is connected with described photoelectric isolating circuit, described photoelectric isolating circuit is connected with described voltage processor, high-precision adc, current processor, described high-precision adc is connected with described voltage processor, current processor, and described voltage processor, current processor respectively are connected with a described sample circuit.
2. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described microprocessor is connected to liquid crystal display.
3. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described microprocessor adopts the AT89C52 chip.
4. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described high-precision adc adopts the TCL7135 chip.
5. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described sample circuit adopts the LF398 chip.
6. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described AC/DC recognizer adopts the LF411 chip.
7. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described voltage processor comprises bleeder circuit and the voltage table that is comprised of two resistance in seriess, and described voltage table is in parallel with a resistance of described bleeder circuit.
8. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described voltage processor comprises voltage transformer (VT) and voltage table, the described voltage transformer secondary side of described voltage table access in parallel.
9. electric energy meter Withstand test device tester according to claim 1, is characterized in that, described current processor comprises milliampere reometer and adjustable resistance, described milliampere of reometer and the series connection of described adjustable resistance.
10. electric energy meter Withstand test device tester according to claim 1, it is characterized in that, described current processor comprises a milliampere reometer, current transformer and adjustable resistance, described milliampere of reometer is connected with described current transformer primary side, the described Current Transformer Secondary side of described adjustable resistance access in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220683034 CN202948129U (en) | 2012-12-12 | 2012-12-12 | Tester for voltage withstanding test apparatus of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220683034 CN202948129U (en) | 2012-12-12 | 2012-12-12 | Tester for voltage withstanding test apparatus of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202948129U true CN202948129U (en) | 2013-05-22 |
Family
ID=48423825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220683034 Expired - Lifetime CN202948129U (en) | 2012-12-12 | 2012-12-12 | Tester for voltage withstanding test apparatus of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202948129U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323809A (en) * | 2013-06-18 | 2013-09-25 | 国家电网公司 | Electric energy meter test equipment |
| CN104237842A (en) * | 2014-10-10 | 2014-12-24 | 国家电网公司 | Alternating voltage test verification device for verifying automatic single-phase kilowatt-hour meter production line |
| CN106066464A (en) * | 2016-06-13 | 2016-11-02 | 国网江苏省电力公司电力科学研究院 | A kind of check standard device for electric energy meter Withstand test device |
| CN107991871A (en) * | 2017-12-05 | 2018-05-04 | 青岛艾诺智能仪器有限公司 | A kind of real-time control method of proof voltage tester output |
| CN108957380A (en) * | 2018-07-25 | 2018-12-07 | 内蒙古送变电有限责任公司 | The development of capacitance type potential transformer no-load voltage ratio, polarity test instrument |
-
2012
- 2012-12-12 CN CN 201220683034 patent/CN202948129U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323809A (en) * | 2013-06-18 | 2013-09-25 | 国家电网公司 | Electric energy meter test equipment |
| CN103323809B (en) * | 2013-06-18 | 2016-08-10 | 国家电网公司 | A kind of electric energy meter test equipment |
| CN104237842A (en) * | 2014-10-10 | 2014-12-24 | 国家电网公司 | Alternating voltage test verification device for verifying automatic single-phase kilowatt-hour meter production line |
| CN106066464A (en) * | 2016-06-13 | 2016-11-02 | 国网江苏省电力公司电力科学研究院 | A kind of check standard device for electric energy meter Withstand test device |
| CN106066464B (en) * | 2016-06-13 | 2018-11-06 | 国网江苏省电力公司电力科学研究院 | A kind of check standard device for electric energy meter Withstand test device |
| CN107991871A (en) * | 2017-12-05 | 2018-05-04 | 青岛艾诺智能仪器有限公司 | A kind of real-time control method of proof voltage tester output |
| CN107991871B (en) * | 2017-12-05 | 2020-09-04 | 青岛艾诺智能仪器有限公司 | Real-time control method for output of voltage-resistant tester |
| CN108957380A (en) * | 2018-07-25 | 2018-12-07 | 内蒙古送变电有限责任公司 | The development of capacitance type potential transformer no-load voltage ratio, polarity test instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202948129U (en) | Tester for voltage withstanding test apparatus of electric energy meter | |
| CN103091609A (en) | Performance detecting system and method thereof of gas insulated substation (GIS) partial discharge on-line monitoring device | |
| CN101539616A (en) | Method for detecting accuracy of optical current transformer for measuring | |
| CN101968536A (en) | Induction voltage divider based method for judging detection error exception of voltage transformer | |
| CN104297532B (en) | Voltage transformer calibrating termination | |
| CN101762799A (en) | Method and system for online detection of voltage transformer precision | |
| CN103616574B (en) | A kind of electric automobile anti-alone island detection system of energy storage combining inverter and detection method | |
| CN102331570A (en) | Electric energy meter on-line detection method | |
| CN103487679A (en) | AIS electronic transformer testing system and testing method thereof | |
| CN104865549A (en) | Reliability evaluation method and system of electric energy metering device | |
| CN101614798B (en) | Polarity detection system of electronic transformer | |
| CN103278753A (en) | Device for induced voltage tests on transformers | |
| CN101344565B (en) | Current transformer detection method and system | |
| CN204166118U (en) | A kind of lightning arrester on-line computing model performance calibration equipment on the spot | |
| CN103913715B (en) | High-voltage measuring box error testing system and error testing method | |
| CN202330691U (en) | Field calibrating equipment for voltage transformer | |
| CN105353332B (en) | Method and system for checking long-term electrification performance of electronic transformer | |
| CN202502242U (en) | Error measurement device for voltage transformer | |
| CN104155627B (en) | Error characteristic detection method of extra high voltage capacitive voltage transformer | |
| CN103558435A (en) | 35kV broadband electronic type voltage transformer | |
| CN201532453U (en) | Tester of lightning arrester monitor | |
| CN203502581U (en) | AIS electronic transformer test system based on disconnecting switch switching-on and switching-off capacitive small current | |
| CN207067321U (en) | High altitude localities 750kV shunt reactor Partial Discharge Testing on Site devices | |
| CN203249991U (en) | Device applied to transformer induction voltage test | |
| CN204359883U (en) | A kind of transformer multifunctional tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180711 Address after: 410004 398 new Shao Dong Road, Tianxin District, Changsha, Hunan Co-patentee after: STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED ELECTRIC POWER Research Institute Patentee after: STATE GRID HUNAN ELECTRIC POWER Co.,Ltd. Co-patentee after: State Grid Corporation of China Address before: 410007 Research Institute of Hunan power company, No. 79 hydroelectric street, Changsha, Hunan Co-patentee before: State Grid Corporation of China Patentee before: SCIENCE RESEARCH INSTITUTE OF HUNAN ELECTRIC POWER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |