CN106569166A - Testing method for legal metering part of double-core electric energy meter - Google Patents
Testing method for legal metering part of double-core electric energy meter Download PDFInfo
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Abstract
本发明涉及技术领域，特别涉及一种双芯电能表法制计量部的测试方法。该方法包括：检验台体接收PC机的指令向被测电能表输出信号；检验台体实时获取若干种测试条件下被测电能表的法制计量部的计量数据，检验台体根据计量数据计算的误差数据；PC机储存误差数据并且根据误差数据拟合误差曲线PC机将误差曲线与检定标准进行比较，获得比较结果。由于本发明检验台体根据计量数据计算的误差数据；PC机储存误差数据并且根据误差数据拟合误差曲线PC机将误差曲线与检定标准进行比较，获得比较结果。可以测出被测电能表在不同测试条件的干扰下被测电能表法制计量部独立工作的准确性。
The invention relates to the technical field, in particular to a test method for the legal metrology department of a double-core electric energy meter. The method includes: the inspection platform receives the instruction of the PC and outputs the signal to the electric energy meter under test; Error data: the PC stores the error data and fits the error curve according to the error data. The PC compares the error curve with the verification standard to obtain the comparison result. Because the present invention checks the error data calculated by the measuring data; the PC stores the error data and fits the error curve according to the error data; the PC compares the error curve with the verification standard to obtain the comparison result. The accuracy of the independent work of the legal metrology department of the tested electric energy meter under the interference of different test conditions can be measured.
Description
技术领域technical field
本发明涉及技术领域，特别涉及一种双芯电能表法制计量部的测试方法。The invention relates to the technical field, in particular to a testing method for the legal metrology department of a double-core electric energy meter.
背景技术Background technique
目前，我国电能表为一体式设计，即计量部分和非计量部分不做独立工作要求。这种电能表对软件和硬件要求比较固化，一旦出现硬件或软件故障，只能采取更换整表的方式来保障电力计量工作顺利进行。且出于防止篡改电能表程序的安全考虑，不允许电能表软件在线升级。而在未来充满竞争的电力市场中，不同售电主体出于追求利益最大化的考虑，制定的多费率电价日时段划分策略更具针对性、多样性和实时性。但这对现有技术的一体式设计的电能表提出了严峻的挑战。如何在保障计量准确性及可靠性的同时又能实现计量计费方式的更新或优化，是当前急需解决的问题。同时随着用户体验观念的逐步渗透，对电能表的功能需求也越来越多，而目前若想扩展升级功能，只能采取安装新表的方式来实现，不仅造成资源的浪费，而且还增加了人力物力成本。At present, my country's electric energy meter is designed in one piece, that is, the metering part and the non-metering part do not require independent work. This kind of energy meter has relatively solid requirements for software and hardware. Once a hardware or software failure occurs, the only way to replace the entire meter is to ensure the smooth progress of power metering. And for the safety consideration of preventing tampering with the energy meter program, the online upgrade of the energy meter software is not allowed. In the future competitive electricity market, out of the consideration of maximizing the interests of different electricity selling entities, the multi-rate electricity price day time division strategy formulated is more targeted, diverse and real-time. But this poses a severe challenge to the integrated energy meter of the prior art. How to update or optimize the metering and billing method while ensuring the accuracy and reliability of metering is an urgent problem to be solved at present. At the same time, with the gradual penetration of user experience concepts, there are more and more functional requirements for electric energy meters. At present, if you want to expand and upgrade functions, you can only implement it by installing new meters, which not only wastes resources, but also increases cost of manpower and material resources.
然而IR46标准要求电能表电子设备与组件分离计量功能与其他功能相互独立，管理部分软件在线升级不影响计量部分的准确性和稳定性。基于IR46标准的双芯电能表将会成为未来中国电能表的发展方向。双芯电能表要求法制计量部分和管理部分分开，即计量芯和管理芯，并且法制计量部分可以独立工作。这样，电能表在线升级时并不会影响计量芯正常工作，无需安装新表。However, the IR46 standard requires that the electronic equipment and components of the electric energy meter be separated and the measurement function is independent of other functions. The online upgrade of the management part software does not affect the accuracy and stability of the measurement part. The dual-core energy meter based on the IR46 standard will become the development direction of China's energy meters in the future. The dual-core electric energy meter requires that the legal measurement part and the management part be separated, that is, the measurement core and the management core, and the legal measurement part can work independently. In this way, the online upgrade of the electric energy meter will not affect the normal operation of the metering core, and there is no need to install a new meter.
为了保证双芯电能表的质量，电能表在出厂之前需要对其法制计量部分的独立性进行测试，因此，急需出现一种双芯电能表法制计量部分独立工作的测试方法。In order to ensure the quality of the double-core electric energy meter, the independence of the legal measurement part of the electric energy meter needs to be tested before leaving the factory. Therefore, there is an urgent need for a test method for the legal measurement part of the double-core electric energy meter to work independently.
发明内容Contents of the invention
为了克服上述问题，本发明提供一种双芯电能表法制计量部的测试方法，该方法能够测试双芯电能表法制计量部是否能够独立工作。In order to overcome the above problems, the present invention provides a method for testing the legal metering part of the double-core electric energy meter, which can test whether the legal metering part of the double-core electric energy meter can work independently.
为达上述优点，本发明提供一种双芯电能表法制计量部的测试方法包括：检验台体实时获取若干种测试条件下被测电能表的法制计量部的计量数据，检验台体根据计量数据计算的误差数据,包括：PC机储存误差数据并且根据误差数据获得误差曲线；PC机将误差曲线与检定标准进行比较，获得比较结果。In order to achieve the above-mentioned advantages, the present invention provides a method for testing the legal metrology section of a double-core electric energy meter, which includes: the inspection platform acquires the measurement data of the legal measurement section of the electric energy meter under several test conditions in real time, and the inspection platform obtains the measurement data according to the measurement data The calculated error data includes: the PC stores the error data and obtains the error curve according to the error data; the PC compares the error curve with the verification standard to obtain the comparison result.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述测试条件包括：被测电能表多通道同时通信、被测电能表软件升级、对被测电能表进行参数设置、被测电能表数据清零；对被测电能表的管理部频繁复位、外部干扰中的一种或几种。In one embodiment of the test method of the legal metrology department of the dual-core electric energy meter of the present invention, the test conditions include: multi-channel simultaneous communication of the electric energy meter under test, software upgrade of the electric energy meter under test, and parameter setting of the electric energy meter under test 1. Clear the data of the measured electric energy meter; frequently reset the management department of the measured electric energy meter, or one or more of external interference.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述外部干扰包括：模拟工作电源故障、外围电路管脚短接或开路故障、被测电能表正常运行过程中对的被测电能表进行模块更换中的一种或几种。In one embodiment of the test method of the legal metrology department of the double-core electric energy meter of the present invention, the external interference includes: simulated working power failure, short circuit or open circuit fault of the peripheral circuit pins, and interference during the normal operation of the electric energy meter under test. Replace one or more of the modules of the electric energy meter under test.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述的检验台体实时获取若干种测试条件下被测电能表的法制计量部的计量数据，检验台体根据计量数据计算的误差数据,包括：对检验台体发往被测电能表的电量计量得到输出数据a；检验台体接收被测电能表的电量数据b；检验台体计算a和b的差值作为的误差数据。In one embodiment of the test method of the legal metrology section of the double-core electric energy meter of the present invention, the inspection table body obtains the measurement data of the legal metrology section of the electric energy meter under several test conditions in real time, and the inspection table body is based on the measurement data The error data of data calculation includes: the output data a is obtained from the electricity metering sent by the inspection platform to the electric energy meter under test; the electric quantity data b received by the inspection platform from the electric energy meter under test; the difference between a and b is calculated by the inspection platform as error data.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述的检验台体实时获取若干种测试条件下被测电能表的法制计量部的计量数据，检验台体根据计量数据计算的误差数据,包括：对检验台体发往被测电能表的电量计量得到输出数据a；检验台体接收被测电能表的电量数据b；检验台体计算a和b的比值作为的误差数据。In one embodiment of the test method of the legal metrology section of the double-core electric energy meter of the present invention, the inspection table body obtains the measurement data of the legal metrology section of the electric energy meter under several test conditions in real time, and the inspection table body is based on the measurement data The error data of data calculation includes: the output data a is obtained from the electricity metering sent by the inspection platform to the electric energy meter under test; the electric quantity data b received by the inspection platform from the electric energy meter under test; the ratio of a and b calculated by the inspection platform as the error data.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述法制计量部包括计量芯片、计量MCU，RS485接口、电池、时钟芯片及存储器。In one embodiment of the testing method of the legal metering part of the dual-core electric energy meter of the present invention, the legal metering part includes a metering chip, a metering MCU, an RS485 interface, a battery, a clock chip and a memory.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述被测电能表通过RS485线与所述的PC机电连接。In one embodiment of the test method of the double-core electric energy meter legal metrology department of the present invention, the electric energy meter under test is electromechanically connected with the PC through an RS485 line.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述计量芯片通过SPI线与所述计量MCU电连接。In one embodiment of the test method of the legal metrology department of the dual-core electric energy meter of the present invention, the metering chip is electrically connected to the metering MCU through an SPI line.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，在检验台体接收PC机的指令向被测电能表输出信号之前所述被测电能表数据清零。In one embodiment of the testing method of the legal metrology department of the double-core electric energy meter of the present invention, the data of the electric energy meter under test is cleared before the inspection platform receives the instruction of the PC and outputs the signal to the electric energy meter under test.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述的PC机和所述控制检验台体同时对多个被测电能表进行测试。In one embodiment of the testing method of the legal metrology department of the dual-core electric energy meter of the present invention, the PC and the control inspection platform simultaneously test a plurality of electric energy meters under test.
由于本发明检验台体实时获取若干种测试条件下被测电能表的法制计量部的计量数据，根据计算法制计量部的误差数据；PC机储存误差数据并且根据误差数据获得误差曲线；PC机将误差曲线与检定标准进行比较，获得比较结果。可以测出被测电能表在不同测试条件的干扰下被测电能表法制计量部独立工作的准确性。Because the inspection platform of the present invention acquires the metering data of the legal metering department of the measured electric energy meter in real time under several test conditions, according to the error data of the legal metering department; the PC stores the error data and obtains the error curve according to the error data; the PC will The error curve is compared with the verification standard to obtain the comparison result. The accuracy of the independent work of the legal metrology department of the tested electric energy meter under the interference of different test conditions can be measured.
附图说明Description of drawings
图1是本发明的被测电能表的原理图。Fig. 1 is a schematic diagram of the measured electric energy meter of the present invention.
图2是本发明的同步测试装置的原理图。Fig. 2 is a schematic diagram of the synchronous testing device of the present invention.
图3是本发明第一实施例双芯电能表法制计量部的测试方法的流程图。Fig. 3 is a flow chart of the testing method of the legal metrology department of the dual-core electric energy meter according to the first embodiment of the present invention.
具体实施方式detailed description
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效，以下结合附图及较佳实施例，对依据本发明提出具体实施方式、结构、特征及其功效，详细说明如后。In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
请参阅图1本发明的双芯电能表法制计量部的测试方法的被测电能表包括法制计量部和管理部。Please refer to Fig. 1. The test method of the legal metrology department of the double-core electric energy meter of the present invention includes a legal metrology department and a management department.
法制计量部包括计量芯片、计量MCU，RS485接口、电池、时钟芯片及存储器。计量芯片通过SPI线与计量MCU电连接。被测电能表通过RS485接口和电池与计量MCU电连接。时钟芯片和存储器与计量MCU电连接。管理部包括管理MCU，计量MCU通过标准接口与管理MCU电连接。被测电能表通过RS485线与所述的PC机电连接。The legal metrology department includes metering chip, metering MCU, RS485 interface, battery, clock chip and memory. The metering chip is electrically connected to the metering MCU through the SPI line. The electric energy meter under test is electrically connected with the metering MCU through the RS485 interface and the battery. The clock chip and memory are electrically connected with the metering MCU. The management unit includes a management MCU, and the metering MCU is electrically connected to the management MCU through a standard interface. The electric energy meter under test is electromechanically connected with the PC through the RS485 line.
PC机通过法制部RS485串口获取法制电量数据，通过管理芯RS485串口、红外、载波等方式获取管理部电量数据。The PC obtains the legal power data through the RS485 serial port of the legal department, and obtains the power data of the management department through the RS485 serial port of the management core, infrared, and carrier wave.
图3是本发明第一实施例双芯电能表法制计量部的测试方法的流程图。请参见图3，本实施例的双芯电能表法制计量部的测试方法包括：Fig. 3 is a flow chart of the testing method of the legal metrology department of the dual-core electric energy meter according to the first embodiment of the present invention. Please refer to Fig. 3, the test method of the legal metrology department of the dual-core electric energy meter of the present embodiment includes:
S1、检验台体接收PC机的指令向被测电能表输出信号；S1. The inspection platform receives the instruction of the PC and outputs the signal to the electric energy meter under test;
S2、检验台体实时获取若干种测试条件下被测电能表的法制计量部的计量数据，检验台体根据计量数据计算的误差数据；S2. The inspection platform obtains the measurement data of the legal metrology department of the measured electric energy meter under several test conditions in real time, and the inspection platform calculates the error data based on the measurement data;
S3、PC机储存误差数据并且根据误差数据拟合误差曲线；S3, the PC stores the error data and fits the error curve according to the error data;
S4、PC机将误差曲线与检定标准进行比较，获得比较结果。S4. The PC compares the error curve with the verification standard to obtain a comparison result.
测试条件包括：被测电能表多通道同时通信、被测电能表软件升级、对被测电能表进行参数设置、被测电能表数据清零；对被测电能表的管理部频繁复位、外部干扰中的一种或几种。外部干扰包括：模拟工作电源故障、外围电路管脚短接或开路故障、被测电能表正常运行过程中对的被测电能表进行模块更换中的一种或几种。The test conditions include: multi-channel simultaneous communication of the tested electric energy meter, software upgrade of the tested electric energy meter, parameter setting of the tested electric energy meter, clearing of the measured electric energy meter data; frequent reset of the management department of the tested electric energy meter, external interference one or more of them. External interference includes: one or more of analog working power failures, short-circuit or open-circuit faults of peripheral circuit pins, and module replacement of the measured electric energy meter during normal operation of the electric energy meter under test.
检验台体实时获取若干种测试条件下被测电能表的计量数据，计算被测电能表的误差数据包括：对检验台体发往被测电能表的电量计量得到输出数据a；检验台体接收被测电能表的电量数据b；检验台体计算a和b的差值作为的误差数据。The inspection platform acquires the measurement data of the tested electric energy meter in real time under several test conditions, and the calculation of the error data of the tested electric energy meter includes: the output data a is obtained from the measurement of the electric energy sent by the inspection station to the tested electric energy meter; the inspection station receives The power data b of the electric energy meter under test; the difference between a and b is calculated by the inspection platform as the error data.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，检验台体实时获取若干种测试条件下被测电能表的计量数据，计算被测电能表的误差数据包括：对检验台体发往被测电能表的电量计量得到输出数据a；检验台体接收被测电能表的电量数据b；检验台体计算a和b的比值作为的误差数据。In one embodiment of the test method of the legal metrology department of the double-core electric energy meter of the present invention, the inspection table body obtains the metering data of the electric energy meter under test under several test conditions in real time, and calculating the error data of the electric energy meter under test includes: The output data a is obtained from the power meter sent by the station to the electric energy meter under test; the electric quantity data b of the electric energy meter under test is received by the inspection station; the error data calculated by the inspection station is the ratio of a and b.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，在检验台体接收PC机的指令向被测电能表输出信号之前所述被测电能表数据清零。In one embodiment of the testing method of the legal metrology department of the double-core electric energy meter of the present invention, the data of the electric energy meter under test is cleared before the inspection platform receives the instruction of the PC and outputs the signal to the electric energy meter under test.
在本发明的双芯电能表法制计量部的测试方法的一个实施例中，所述的PC机和所述控制检验台体同时对多个被测电能表进行测试。每台电表都是独立测试互不影响，可以根据台体表位多少同时安排多个电表同时测试。In one embodiment of the testing method of the legal metrology department of the dual-core electric energy meter of the present invention, the PC and the control inspection platform simultaneously test a plurality of electric energy meters under test. Each meter is independently tested and does not affect each other, and multiple meters can be arranged to test at the same time according to the number of table positions.
综上，本发明至少具有以下的优点:In summary, the present invention has at least the following advantages:
由于本发明的双芯电能表法制计量部的测试方法中的检验台体实时计算被测电能表的误差数据；PC机实时读取的检验台体的误差数据并记录，拟合成误差曲线；PC机和检验台体向的被测电能表输出不同测试条件；这样，便可以测出被测电能表在不同测试条件的干扰下被测电能表法制计量部独立工作的准确性。如此，便可保证出厂的电能表均为合格产品。Because the testing platform in the test method of the double-core watt-hour meter legal metrology department of the present invention calculates the error data of the measured watt-hour meter in real time; the error data of the testing platform read by the PC in real time is recorded and fitted into an error curve; The PC and the inspection table output different test conditions to the tested electric energy meter; in this way, the accuracy of the independent work of the tested electric energy meter under the interference of different test conditions can be measured. In this way, it can be guaranteed that the electric energy meters that leave the factory are all qualified products.
以上，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化和修饰，均仍属于本发明技术方案的范围内。The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the art , without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but as long as it does not depart from the technical solution of the present invention, the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.
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Cited By (5)
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| CN107505588A (en) * | 2017-08-08 | 2017-12-22 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter combines error testing method and system |
| CN108445436A (en) * | 2018-03-01 | 2018-08-24 | 宁波迦南智能电气股份有限公司 | A kind of electric energy meter that twin-core operating status is mutually examined |
| CN112098924A (en) * | 2020-11-04 | 2020-12-18 | 南方电网数字电网研究院有限公司 | Interactive function testing method and device based on dual-core smart meter |
| CN112858993A (en) * | 2021-02-20 | 2021-05-28 | 南方电网数字电网研究院有限公司 | Double-core electric energy meter test system |
| CN112994964A (en) * | 2019-12-16 | 2021-06-18 | 浙江正泰仪器仪表有限责任公司 | Intelligent electric meter double-core communication simulation system |
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| US12223049B2 (en) | 2021-06-30 | 2025-02-11 | Honeywell International Inc. | Method and system for configuring a feature for an energy meter as legally important or legally non-important |
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| CN107505588A (en) * | 2017-08-08 | 2017-12-22 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter combines error testing method and system |
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