CN112748388A - Test system and test method for intelligent electric meter - Google Patents
Test system and test method for intelligent electric meter Download PDFInfo
- Publication number
- CN112748388A CN112748388A CN201911038674.XA CN201911038674A CN112748388A CN 112748388 A CN112748388 A CN 112748388A CN 201911038674 A CN201911038674 A CN 201911038674A CN 112748388 A CN112748388 A CN 112748388A
- Authority
- CN
- China
- Prior art keywords
- test
- measured
- metering
- metering data
- voltage
- 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.)
- Pending
Links
Images
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to a test system and a test method of an intelligent ammeter, wherein the test system is provided with an analog quantity output end and a digital quantity input end, the analog quantity output end is used for connecting the input end of a metering chip of the intelligent ammeter to be measured and is used for: sending a pre-stored voltage and current signal corresponding to the actual load to a metering chip of the intelligent ammeter to be measured; the digital quantity input end is used for connecting the output end of the intelligent electric meter to be measured and is used for: and acquiring the metering data of the intelligent ammeter to be measured, and comparing the acquired metering data with the pre-stored metering data corresponding to the voltage and current signals, so as to obtain the metering accuracy of the intelligent ammeter to be measured. According to the invention, the voltage and current signals corresponding to the actual load are stored in advance, so that the intelligent ammeter can be tested by adopting the actual voltage and current signals on site during testing, the authenticity of test data is ensured, and the accuracy of the ammeter test result is improved.
Description
Technical Field
The invention relates to a test system and a test method of an intelligent ammeter, and belongs to the technical field of power electronics.
Background
The metering function is the most important function of the intelligent electric energy meter, is related to the vital interests of power enterprises, customers and common people, and can cause serious loss to users when the metering data of the electric energy meter is not accurate. At present, the test process of the metering function of the intelligent electric energy meter is generally carried out by applying an analog load to the electric energy meter in a laboratory environment. However, the number and the latitude of the test data input to the intelligent electric energy meter are limited, for example, the simulated test data are few, the simulated test data do not include noise signals in the actual test data, and in addition, the influence of factors such as current limiting resistance and the like often causes inaccurate test results.
Disclosure of Invention
The invention aims to provide a test system and a test method of an intelligent electric meter, which are used for solving the problem of inaccurate test results caused by the existing test method of the intelligent electric meter.
In order to solve the technical problem, the invention provides a test system of a smart meter, which is provided with an analog quantity output end and a digital quantity input end, wherein the analog quantity output end is used for connecting the input end of a metering chip of the smart meter to be measured and is used for: sending a pre-stored voltage and current signal corresponding to the actual load to a metering chip of the intelligent ammeter to be measured; the digital quantity input end is used for connecting the output end of the intelligent electric meter to be measured and is used for: and acquiring the metering data of the intelligent ammeter to be measured, and comparing the acquired metering data with the pre-stored metering data corresponding to the voltage and current signals, so as to obtain the metering accuracy of the intelligent ammeter to be measured.
The invention has the beneficial effects that: the voltage and current signals corresponding to the actual load are stored in advance, so that the intelligent electric meter can measure by adopting the actual voltage and current signals on the spot during testing, and the measuring result is compared with the pre-stored measuring result, so that the measuring accuracy of the intelligent electric meter to be measured is obtained. The invention ensures the authenticity of the voltage and current signal test data and improves the accuracy of the test result of the ammeter.
As a further improvement of the system, in order to implement reliable testing, the test system includes a test master and a test slave, an output terminal of the test master is connected to a first input terminal of the test slave, and a first output terminal of the test slave is connected to the analog output terminal, and is configured to: the test slave receives a voltage and current signal which is sent by the test host and corresponds to a pre-stored actual load, and forwards the voltage and current signal to a metering chip of the intelligent ammeter to be measured; the input end of the test host is connected with the second output end of the test slave, and the second input end of the test slave is connected with the digital input end and is used for: and the test slave machine receives the metering data of the intelligent electric meter to be measured and forwards the metering data to the test host machine.
As a further improvement of the system, in order to realize reliable data transmission, the output end of the test host and the first input end of the test slave are SPI ports, and the input end of the test host, the second input end of the test slave and the second output end are RS485 ports.
As a further improvement of the system, in order to display the test result for convenient viewing, the test host is provided with a display module for displaying the comparison result of the acquired metering data and the pre-stored metering data.
As a further improvement of the system, in order to ensure that the test system works normally, the test system further comprises a power supply system, a first power supply end of the power supply system is in power supply connection with the test host, and a second power supply end of the power supply system is used for power supply connection with the intelligent electric meter to be measured.
In order to solve the technical problem, the invention also provides a test method of the intelligent ammeter, which comprises the following steps:
sending a pre-stored voltage and current signal corresponding to the actual load to a metering chip of the intelligent ammeter to be measured;
and acquiring the metering data of the intelligent ammeter to be measured, and comparing the acquired metering data with the pre-stored metering data corresponding to the voltage and current signals, so as to obtain the metering accuracy of the intelligent ammeter to be measured.
The invention has the beneficial effects that: the voltage and current signals corresponding to the actual load are stored in advance, so that the intelligent electric meter can measure by adopting the actual voltage and current signals on the spot during testing, and the measuring result is compared with the pre-stored measuring result, so that the measuring accuracy of the intelligent electric meter to be measured is obtained. The invention ensures the authenticity of the voltage and current signal test data and improves the accuracy of the test result of the ammeter.
As a further improvement of the method, in order to display the test result for easy viewing, the method further comprises:
and displaying the comparison result of the acquired metering data and the metering data corresponding to the pre-stored voltage and current signals.
Drawings
Fig. 1 is a block diagram of a test system of a smart meter of the present invention;
fig. 2 is a schematic diagram of a test system of the smart meter of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the test system of the intelligent electric meter comprises the following steps:
the embodiment provides a test system of a smart electric meter, a corresponding structural schematic diagram of which is shown in fig. 1, the test system comprises a test host and a test slave, the test host is provided with an output end and an input end, and the test slave is provided with a first input end, a first output end, a second input end and a second output end. The output end of the test host is connected with the first input end of the test slave, the first output end of the test slave is used as the analog quantity output end of the whole test system and is used for being connected with the input end (AD sampling port) of the metering chip in the intelligent ammeter to be measured, and the AD sampling port of the metering chip of the intelligent ammeter to be measured is connected to the test slave in a probe mode. The input end of the test host is connected with the second output end of the test slave, and the second input end of the test slave is used as the digital quantity input end of the whole test system and is used for being connected with the output end of the metering chip in the intelligent ammeter to be measured.
As shown in fig. 1, in this embodiment, both the output end of the test master and the first input end of the test slave are SPI serial peripheral ports, and the ports are connected through an SPI bus; the input end of the test host computer, the second input end and the second output end of the test slave computer are all RS485 ports, and the ports are connected through RS485 buses.
In addition, in order to facilitate checking and realize data display, the test host is also provided with a display module. In order to supply power to the test host and the intelligent electric meter to be measured, the test system further comprises a power supply system, a first power supply end of the power supply system is in power supply connection with the test host, and a second power supply end of the power supply system is used for power supply connection with the intelligent electric meter to be measured. The test slave is provided with a dongle, and the data is prevented from being stolen by protecting the software and the data.
Based on the test system of the smart electric meter, the embodiment provides a test method of the smart electric meter, which includes the following steps:
(1) and sending the pre-stored voltage and current signals corresponding to the actual load to a metering chip in the intelligent ammeter to be measured.
The voltage and current signals corresponding to the actual loads are stored in advance, and the voltage and current signals are weak current signals formed under different working conditions by testing, extracting and optimizing various actual power load curves. The actual power load curves are stored in a weak current waveform library, and the weak current waveform library can be edited and expanded and can support power load detection in more than 10 complex power environments at most.
As shown in fig. 2, when the metering accuracy of the smart meter to be measured needs to be tested, after the AD sampling port of the metering chip is ensured to be in normal contact with the test slave, the test master sends the voltage and current weak current signal corresponding to the actual load to the test slave through the SPI port, the test slave sends the received voltage and current weak current signal corresponding to the actual load to the AD sampling port of the metering chip of the smart meter to be measured, and the metering chip of the smart meter to be measured starts to perform metering after receiving the voltage and current weak current signal corresponding to the actual load, so as to obtain the metering data.
(2) And acquiring the metering data of the intelligent ammeter to be measured, and comparing the acquired metering data with the pre-stored metering data corresponding to the voltage and current signals, so as to obtain the metering accuracy of the intelligent ammeter to be measured.
After the metering chip of the intelligent electric meter to be measured finishes metering, the testing slave machine reads metering data measured by the intelligent electric meter to be measured through an RS485 bus, wherein the metering data refers to an electric quantity value and can also refer to a current value or a voltage value. The test host reads the metering data acquired by the test slave from the intelligent electric energy meter to be measured through the RS485 bus, compares the metering data of the intelligent electric energy meter to be measured with the pre-stored metering data, and displays the comparison result, so that the metering accuracy of the intelligent electric energy meter to be measured is obtained. For example, let the metering accuracy C be the metering data of the smart meter to be measured/the pre-stored metering data, and the closer the metering accuracy C is to 1, the more accurate the metering of the smart meter to be measured is.
The embodiment of the test method of the intelligent electric meter comprises the following steps:
the embodiment provides a method for testing a smart meter, which is described in detail in the foregoing embodiment of a system for testing a smart meter, and thus is not described herein again.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present application, various changes, modifications or equivalents of the embodiments of the present application can be made, and these changes, modifications or equivalents are within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a smart electric meter's test system, its characterized in that, this test system is provided with analog quantity output and digital quantity input, the analog quantity output is used for connecting the input of the smart electric meter measurement chip of awaiting measuring for: sending a pre-stored voltage and current signal corresponding to the actual load to a metering chip of the intelligent ammeter to be measured; the digital quantity input end is used for connecting the output end of the intelligent electric meter to be measured and is used for: and acquiring the metering data of the intelligent ammeter to be measured, and comparing the acquired metering data with the pre-stored metering data corresponding to the voltage and current signals, so as to obtain the metering accuracy of the intelligent ammeter to be measured.
2. The test system of the smart meter of claim 1, wherein the test system comprises a test master and a test slave, an output terminal of the test master is connected to a first input terminal of the test slave, and a first output terminal of the test slave is connected to the analog output terminal, and is configured to: the test slave receives a voltage and current signal which is sent by the test host and corresponds to a pre-stored actual load, and forwards the voltage and current signal to a metering chip of the intelligent ammeter to be measured; the input end of the test host is connected with the second output end of the test slave, and the second input end of the test slave is connected with the digital input end and is used for: and the test slave machine receives the metering data of the intelligent electric meter to be measured and forwards the metering data to the test host machine.
3. The system for testing the smart meter of claim 2, wherein the output end of the test master and the first input end of the test slave are SPI ports, and the input end of the test master and the second input end and the second output end of the test slave are RS485 ports.
4. The system for testing the smart meter of claim 2, wherein the testing host is provided with a display module for displaying the comparison result between the acquired metering data and the pre-stored metering data.
5. The system for testing the smart meter of claim 2, further comprising a power system, wherein a first power supply end of the power system is in power supply connection with the test host, and a second power supply end of the power system is in power supply connection with the smart meter to be measured.
6. A test method of an intelligent ammeter is characterized by comprising the following steps:
sending a pre-stored voltage and current signal corresponding to the actual load to a metering chip of the intelligent ammeter to be measured;
and acquiring the metering data of the intelligent ammeter to be measured, and comparing the acquired metering data with the pre-stored metering data corresponding to the voltage and current signals, so as to obtain the metering accuracy of the intelligent ammeter to be measured.
7. The method for testing the smart meter of claim 6, further comprising:
and displaying the comparison result of the acquired metering data and the metering data corresponding to the pre-stored voltage and current signals.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911038674.XA CN112748388A (en) | 2019-10-29 | 2019-10-29 | Test system and test method for intelligent electric meter |
| PCT/CN2020/102506 WO2021082532A1 (en) | 2019-10-29 | 2020-07-16 | Test system and test method for intelligent electricity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911038674.XA CN112748388A (en) | 2019-10-29 | 2019-10-29 | Test system and test method for intelligent electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112748388A true CN112748388A (en) | 2021-05-04 |
Family
ID=75641615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911038674.XA Pending CN112748388A (en) | 2019-10-29 | 2019-10-29 | Test system and test method for intelligent electric meter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112748388A (en) |
| WO (1) | WO2021082532A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005085880A2 (en) * | 2003-12-31 | 2005-09-15 | Actaris Uk Limited | Electrical power meter |
| CN105891763A (en) * | 2015-01-26 | 2016-08-24 | 国家电网公司 | Power meter operation fault intelligent processing system and a method thereof |
| CN205643688U (en) * | 2016-06-01 | 2016-10-12 | 辽宁双宜电力电子有限公司 | Single -phase electric energy meter detection device |
| CN106199485A (en) * | 2016-06-22 | 2016-12-07 | 国网宁夏电力公司电力科学研究院 | High-voltage electric energy meter remote online check system |
| CN106918799A (en) * | 2017-04-12 | 2017-07-04 | 华北电力科学研究院有限责任公司 | Electric energy meter remote checking method and system |
| CN107121659A (en) * | 2017-06-22 | 2017-09-01 | 国网辽宁省电力有限公司锦州供电公司 | A kind of three-phase electric energy meter on-site detection means and detection method |
| CN206470388U (en) * | 2016-10-13 | 2017-09-05 | 国网冀北电力有限公司电力科学研究院 | The apparatus for evaluating of metering performance under dynamic load |
| CN108693498A (en) * | 2018-07-09 | 2018-10-23 | 宁夏隆基宁光仪表股份有限公司 | A kind of electrical energy meter calibration method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5461261B2 (en) * | 2010-03-23 | 2014-04-02 | 株式会社ダイヘン | Method for evaluating reliability of power measuring device |
| CN202433517U (en) * | 2012-01-30 | 2012-09-12 | 江苏省计量科学研究院 | Portable EMC (electromagnetic compatibility) test-level detecting device for electric energy meter |
| CN104459597A (en) * | 2014-11-14 | 2015-03-25 | 国家电网公司 | Electric energy measuring technical analysis platform under non-linear loads |
| CN204331017U (en) * | 2014-12-25 | 2015-05-13 | 深圳市航天泰瑞捷电子有限公司 | Intelligent electric energy meter proving installation and system |
| CN105824001B (en) * | 2015-01-06 | 2020-08-28 | 国家电网公司 | Method and system for testing IEC61850 conformance of digital electric energy meter |
| CN106405482B (en) * | 2016-11-11 | 2023-11-24 | 国网冀北电力有限公司电力科学研究院 | Nonlinear load metering precision measuring device of digital electric energy meter |
| CN106707220A (en) * | 2016-12-03 | 2017-05-24 | 国网江西省电力公司电力科学研究院 | Typical non-linear load single-phase electric energy meter calibration device |
-
2019
- 2019-10-29 CN CN201911038674.XA patent/CN112748388A/en active Pending
-
2020
- 2020-07-16 WO PCT/CN2020/102506 patent/WO2021082532A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005085880A2 (en) * | 2003-12-31 | 2005-09-15 | Actaris Uk Limited | Electrical power meter |
| CN105891763A (en) * | 2015-01-26 | 2016-08-24 | 国家电网公司 | Power meter operation fault intelligent processing system and a method thereof |
| CN205643688U (en) * | 2016-06-01 | 2016-10-12 | 辽宁双宜电力电子有限公司 | Single -phase electric energy meter detection device |
| CN106199485A (en) * | 2016-06-22 | 2016-12-07 | 国网宁夏电力公司电力科学研究院 | High-voltage electric energy meter remote online check system |
| CN206470388U (en) * | 2016-10-13 | 2017-09-05 | 国网冀北电力有限公司电力科学研究院 | The apparatus for evaluating of metering performance under dynamic load |
| CN106918799A (en) * | 2017-04-12 | 2017-07-04 | 华北电力科学研究院有限责任公司 | Electric energy meter remote checking method and system |
| CN107121659A (en) * | 2017-06-22 | 2017-09-01 | 国网辽宁省电力有限公司锦州供电公司 | A kind of three-phase electric energy meter on-site detection means and detection method |
| CN108693498A (en) * | 2018-07-09 | 2018-10-23 | 宁夏隆基宁光仪表股份有限公司 | A kind of electrical energy meter calibration method |
Non-Patent Citations (5)
| Title |
|---|
| HSUEH-HSIEN CHANG: "Particle-Swarm-Optimization-Based Nonintrusive Demand Monitoring and Load Identification in Smart Meters", 《IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS》 * |
| 林伟斌: "电能表现场校验技术研发应用现状及其发展趋势_下", 《电测与仪表》 * |
| 樊博: "一种新型结构的高压电能表远程校验设计", 《电子测量技术》 * |
| 陶涛: "浅析影响电能表准确性的原因与现场校验", 《科技与企业》 * |
| 马风霞: "影响电能计量装置准确性的因素及其改进方法", 《宁夏电力》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021082532A1 (en) | 2021-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101694518B (en) | Direct current energy meter test device, energy error test method and creeping calibration method | |
| CN107478382B (en) | Automatic detection device and detection method for pressure instrument | |
| CN106569164A (en) | Method and system for synchronization testing of electric quantity of double-core electric energy meter | |
| CN216748451U (en) | High-precision time service precision measurement system | |
| CN107783069A (en) | The on-line calibration system and method for DC measurement in integrated circuit test system | |
| CN105629052B (en) | Chip power-consumption real-time detection method | |
| CN104317683A (en) | Method for testing power consumption of memory | |
| CN101839931A (en) | Alternating current signal measurement device, system and method | |
| CN112067165A (en) | Temperature sensor precision testing system, testing method, testing device and storage medium | |
| CN102620764A (en) | Metrological verification device for automatic test system | |
| CN206695822U (en) | A kind of vibrating string type sensor work condition online testing device | |
| CN103532550A (en) | Current frequency converter test method based on virtual instrument | |
| CN101153899A (en) | Automatic measuring system and method of digital multimeter | |
| CN215642381U (en) | Automatic ECU communication visibility and invisibility voltage test system | |
| CN109900970A (en) | A kind of multi channel detector capacitor automatic measurement system | |
| CN112748388A (en) | Test system and test method for intelligent electric meter | |
| CN106840246A (en) | A kind of vibrating string type sensor work condition on-line testing method and device | |
| CN112269364A (en) | Fault positioning self-testing system and method | |
| CN216646688U (en) | Volt-ampere characteristic analysis and test device for semiconductor laser | |
| CN101871971A (en) | Method for measuring frequency-phase characteristic of electrical network | |
| CN111258828A (en) | I2C bus test method, test device and computer readable storage medium | |
| CN202870025U (en) | Device for testing corrosion degree of steel cable | |
| WO2023029253A1 (en) | Power source stability testing method, system, and device | |
| CN202267714U (en) | Capacitor capacity data test and acquisition system | |
| CN111190134B (en) | Dynamic response time characteristic test method and verification device for electric energy meter |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210504 |