CN104914397A - Test quality check method for access-type three-phase intelligent electric energy meter automatic verification system - Google Patents

Test quality check method for access-type three-phase intelligent electric energy meter automatic verification system Download PDF

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CN104914397A
CN104914397A CN201510342889.6A CN201510342889A CN104914397A CN 104914397 A CN104914397 A CN 104914397A CN 201510342889 A CN201510342889 A CN 201510342889A CN 104914397 A CN104914397 A CN 104914397A
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electric energy
energy meter
standard
standard electric
verification system
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李野
曹国瑞
朱逸群
滕永兴
于学均
陈刚
郭景涛
张一萌
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TIANJIN INSTITUTE OF METROLOGICAL SUPERVISON AND TESTING
State Grid Corp of China SGCC
State Grid Tianjin Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Tianjin Electric Power Co Ltd
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Abstract

本发明涉及一种用于接入式三相智能电能表自动化检定系统的检测质量核查方法,在自动化流水线检定系统上的检定流程步骤如下:⑴准备:将标准电能表信息录入检定系统;⑵装表:把标准电能表托盘放进绑定位和正常任务的电能表随机混合流入自动化检定线体;⑶绑定:流水线服务器会按照预先设置的方案把标准电能表的条码号和该托盘的信息进行绑定;⑷试验:自动线会按照预定的试验方案执行;⑸下表:PLC会自动根据绑定信息识别该托盘上的标准电能表,标准电能表托循环执行步骤⑶、⑷、⑸的流程;⑹数据处理:导出检定数据。本发明设计科学、操作便捷、准确可靠,实现对电能计量装置或仪器设备进行期间核查,能够有效保证电能量值传递准确、可靠的。

The invention relates to a detection quality inspection method for an automatic verification system of an access-type three-phase intelligent electric energy meter. The verification process steps on the automatic assembly line verification system are as follows: (1) preparation: input the information of the standard electric energy meter into the verification system; (2) install Table: Put the standard electric energy meter tray into the binding position and randomly mix the electric energy meter with normal tasks into the automatic verification line; (3) Binding: the assembly line server will combine the barcode number of the standard electric energy meter and the information of the tray according to the preset scheme Carry out binding; ⑷Test: The automatic line will execute according to the predetermined test plan; ⑸The following table: PLC will automatically identify the standard electric energy meter on the tray according to the binding information, and the standard electric energy meter will carry out the process of steps ⑶, ⑷, and ⑸ in a cycle ; ⑹ data processing: export test data. The invention is scientific in design, convenient in operation, accurate and reliable, realizes periodic checking of electric energy metering devices or instruments and equipment, and can effectively ensure accurate and reliable transmission of electric energy values.

Description

一种用于接入式三相智能电能表自动化检定系统的检测质量核查方法A detection quality verification method for automatic verification system of connected three-phase smart electric energy meter

技术领域technical field

本发明属于电测、仪器仪表领域,尤其是一种用于接入式三相智能电能表自动化检定系统的检测质量核查方法。The invention belongs to the fields of electric measurement and instrumentation, in particular to a detection quality checking method for an automatic verification system of an access-type three-phase intelligent electric energy meter.

背景技术Background technique

电能已成为人类社会赖以生存和发展必不可缺少的一种重要能源,人类的所有活动几乎都与电有密切的关系,而电能表是检测电能使用标准的直接计量仪表,如何保证电能表校验的准确、高效、努力提高电能表的校验效率,就成为摆在各级计量检测部门亟需解决的问题。Electric energy has become an indispensable and important energy source for the survival and development of human society. Almost all human activities are closely related to electricity, and electric energy meters are direct measuring instruments for detecting electric energy usage standards. How to ensure the calibration of electric energy meters The accuracy and efficiency of the test, and efforts to improve the calibration efficiency of the electric energy meter have become problems that need to be solved urgently by the measurement and testing departments at all levels.

为了保持电能计量装置、测试设备的可靠性,保证电能量值溯源性和传递性的准确可靠,按照相关规程规定对仪器设备进行周期性的检定、校准是有效途径之一。一般情况下,在电能表检定装置的校验周期内,电能计量仪器设备都能正常工作,能够保持计量性能的持续稳定,但在实际使用中,由于操作方法、环境条件、使用频率、运输、振动等多种因素的影响,可能使仪器设备的性能发生变化,甚至发生不易发现的故障和意外。为了保证计量标准装置、测量设备在两次检定、校准间隔内的准确可靠,并保持良好的置信度,相关计量规范都提出了对计量标准和测量设备的期间核查要求。In order to maintain the reliability of electric energy metering devices and test equipment, and ensure the accuracy and reliability of the traceability and transferability of electric energy values, periodic verification and calibration of instruments and equipment in accordance with relevant regulations is one of the effective ways. Under normal circumstances, during the calibration period of the electric energy meter verification device, the electric energy metering equipment can work normally, and the measurement performance can be maintained continuously and stably. The influence of various factors such as vibration may change the performance of the instrument and equipment, and even cause failures and accidents that are not easy to find. In order to ensure the accuracy and reliability of the measurement standard device and measurement equipment during the two verification and calibration intervals, and to maintain a good degree of confidence, the relevant measurement specifications have put forward the requirements for periodic verification of measurement standards and measurement equipment.

期间核查是指为保持对设备校准状态的可信度,在相邻两次检定、校准之间,用适当的核查标准和适当的方法对标准或测量设备进行的核查。期间核查是用以判断设备是否保持上次校准时的各项计量性能指标,保证测量过程受控,确保量值传递的准确可靠和置信度。目前,期间核查的方法是采用将待测的电能表上线检测,检测线上安装有数十至数百台检测设备以满足大量电能表上线检测需求,该多台检测设备本身的检测精度的校准成为保障电能表检测精度的又一难题,由于现有的设备本身体积大、重量大、难以移动,需要通过人工携带校准设备分别对检测设备进行拆装、接线、校准检测,往往每个校准周期时间长,而且人工工作量大、工作效率低。Periodic verification refers to the verification of standards or measuring equipment with appropriate verification standards and appropriate methods between two adjacent verifications and calibrations in order to maintain the reliability of the calibration status of the equipment. The period check is used to judge whether the equipment maintains the various measurement performance indicators of the last calibration, to ensure that the measurement process is controlled, and to ensure the accuracy, reliability and confidence of the value transmission. At present, the method of verification during the period is to use the online detection of the electric energy meter to be tested. Dozens to hundreds of detection equipment are installed on the detection line to meet the online detection requirements of a large number of electric energy meters. The detection accuracy of the multiple detection equipment itself is calibrated It has become another difficult problem to ensure the detection accuracy of electric energy meters. Because the existing equipment itself is large in size, heavy in weight, and difficult to move, it is necessary to manually carry the calibration equipment to disassemble, connect, and calibrate the testing equipment. Often, each calibration cycle The time is long, and the manual workload is large, and the work efficiency is low.

发明内容Contents of the invention

本发明的目的在于克服现有技术的不足之处,提供一种设计科学、操作便捷、准确可靠的用于接入式三相智能电能表自动化检定系统的检测质量核查方法。The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a scientifically designed, conveniently operated, accurate and reliable detection quality inspection method for an automatic verification system of an access-type three-phase smart electric energy meter.

本发明解决其技术问题是采取以下技术方案实现的:The present invention solves its technical problem and realizes by taking the following technical solutions:

一种用于接入式三相智能电能表自动化检定系统的检测质量核查方法,其特征在于:在自动化流水线检定系统上的检定流程步骤如下:A detection quality verification method for an automatic verification system of an connected three-phase smart electric energy meter, characterized in that: the steps of the verification process on the automated assembly line verification system are as follows:

⑴准备:制备经互感器接入式三相智能电能表的标准电能表,标准电能表精度远高于任务电能表;对标准电能表制定特别的条码,以和正常表计进行区分;将标准电能表信息录入检定系统,在上表时能根据盲表条码自动识别;⑴Preparation: Prepare the standard electric energy meter of the three-phase intelligent electric energy meter connected by the transformer. The energy meter information is entered into the verification system, which can be automatically identified according to the barcode of the blind meter when uploading the meter;

⑵装表:在正在运行的流水线上表位置处,人工把标准电能表放到任意或指定的空托盘上,然后把标准电能表托盘放进绑定位和正常的任务电能表随机混合流入自动化检定线体;(2) Meter installation: Manually put the standard electric energy meter on any or designated empty tray at the meter position on the running assembly line, and then put the standard electric energy meter tray into the binding position and randomly mix it with the normal task electric energy meter to flow into the automation Calibration line body;

⑶绑定:标准电能表经过绑定位后,流水线服务器会按照预先设置的方案把标准电能表的条码号和该托盘的信息进行绑定;(3) Binding: After the standard electric energy meter passes through the binding position, the assembly line server will bind the barcode number of the standard electric energy meter with the information of the tray according to the preset scheme;

⑷试验:标准电能表流经流水线上各个试验专机后,自动线会按照预定的试验方案执行,选择对标准电能表做试验或者不做试验;⑷Test: After the standard electric energy meter flows through each test machine on the assembly line, the automatic line will execute according to the predetermined test plan, and choose to test or not to test the standard electric energy meter;

⑸下表:标准电能表在各专机做完试验后,在流水线上按照设定的流程进入下表流程,标准电能表在流经下表流程后,PLC会自动根据绑定信息识别该托盘上的标准电能表,不执行下表流程,而是把标准电能表托盘自动放行,标准电能表托盘会自动流经绑定位,循环执行步骤⑶、⑷、⑸的流程;⑸The following table: After the standard electric energy meter is tested on each special machine, it enters the following table process on the assembly line according to the set process. For the standard energy meter, the process in the following table is not executed, but the standard energy meter tray is automatically released, and the standard energy meter tray will automatically flow through the binding position, and the process of steps ⑶, ⑷, and ⑸ is executed cyclically;

⑹数据处理:获取检测数据并比对该检测数据的准确性,并导出比对结果生成检测质量核查结果;⑹Data processing: obtain test data and compare the accuracy of the test data, and export the comparison results to generate test quality check results;

检测质量核查包括基本误差、测量重复性、标准器准确度、装置输出的对称度和稳定度、负载变化影响、同名端钮间电位差、相间交变磁场影响以及稳定性变差,检定获得计量性能对比标准为国标JJG597-2005以及GB/T-17215.701-2011的标准。Inspection quality inspection includes basic error, measurement repeatability, accuracy of standard instrument, symmetry and stability of device output, influence of load change, potential difference between terminals with the same name, influence of alternating magnetic field between phases, and stability deterioration. The performance comparison standard is the national standard JJG597-2005 and GB/T-17215.701-2011.

而且,该标准电能表的精度为0.02级或0.05级,待检测的正常任务电能表为2级。Moreover, the accuracy of the standard electric energy meter is 0.02 or 0.05, and the accuracy of the normal task electric energy meter to be tested is 2.

而且,标准电能表的工作原理为:电压、电流输出分别经电阻分压取样和电流互感器取样变成小信号后,做A/D转换送DSP处理,DSP做实时U、I运算,求出实际功率值P,由P控制频率发生器产生比例于P的高频脉冲输出,该脉冲为电能高脉冲,由分频器分频得电能低脉冲,高、低频电能脉冲输出到接口;测量P的同时,DSP完成电压、电流真有效值相位、频率等的测量,该测值量通过485接口传送给自动化校表流水线。Moreover, the working principle of the standard watt-hour meter is: after the voltage and current output are respectively sampled by resistance division and current transformer to become small signals, A/D conversion is performed and sent to DSP for processing, and DSP performs real-time U and I calculations to obtain The actual power value P is controlled by P and the frequency generator generates a high-frequency pulse output proportional to P. The pulse is a high-energy pulse, which is divided by a frequency divider to obtain a low-energy pulse. The high-frequency and low-frequency energy pulses are output to the interface; measure P At the same time, the DSP completes the measurement of voltage, current true RMS phase, frequency, etc., and the measured value is transmitted to the automatic meter calibration pipeline through the 485 interface.

本发明的优点和积极效果是:Advantage and positive effect of the present invention are:

1、本方法能够校验校验电能表检定装置以及电能表自动化检定系统误差,检定校验电能表检定装置以及电能表自动化检定系统的基本误差。1. The method can verify and verify the error of the electric energy meter verification device and the electric energy meter automatic verification system, and verify and verify the basic error of the electric energy meter verification device and the electric energy meter automatic verification system.

2、本方法具备动态核对功能,在系统检定电能表时,把标准电能表动态地混入被检表中作为盲表,在系统中循环流动,随机进入检定单元,对不同表位误差进行实时监控,保证检定数据的准确可靠。2. This method has the function of dynamic verification. When the system verifies the electric energy meter, the standard electric energy meter is dynamically mixed into the tested meter as a blind meter, which circulates in the system and randomly enters the verification unit to monitor the errors of different meter positions in real time. , to ensure the accuracy and reliability of the test data.

3、本方法采用多路输出一致性检验,通过标准电能表在检定单元不同表位的流转,测试出相应表位的误差,从而计算出电能表自动化检定系统的多路输出一致性。3. This method adopts the multi-channel output consistency test, and the error of the corresponding epi-position is tested through the circulation of different epi-positions of the standard electric energy meter in the verification unit, so as to calculate the multi-channel output consistency of the electric energy meter automatic verification system.

4、本发明设计科学、操作便捷、准确可靠,可以实现对电能计量装置或仪器设备进行期间核查,能够有效保证电能量值传递准确、可靠的,显著提升对检测系统准确性的检测效率以及检测准确性,从而有效提升整体检测工作效率。4. The present invention is scientific in design, convenient in operation, accurate and reliable, can realize periodic verification of electric energy metering devices or instruments and equipment, can effectively ensure accurate and reliable transmission of electric energy values, and significantly improves the detection efficiency and detection of the accuracy of the detection system. Accuracy, thereby effectively improving the overall detection efficiency.

附图说明Description of drawings

图1为本发明的电路原理图;Fig. 1 is a schematic circuit diagram of the present invention;

图2为本发明的检定流程图。Fig. 2 is the test flow chart of the present invention.

具体实施方式Detailed ways

下面结合附图并通过具体实施例对本发明作进一步详述,以下实施例只是描述性的,不是限定性的,不能以此限定本发明的保护范围。The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

一种用于接入式三相智能电能表自动化检定系统的检测质量核查方法,在自动化流水线检定系统上的检定流程步骤如下:A detection quality verification method for an automatic verification system of an connected three-phase smart electric energy meter. The verification process steps on the automatic assembly line verification system are as follows:

⑴准备:制备经互感器接入式三相智能电能表的标准电能表,该标准电能表的精度为0.02级或0.05级,而一般居民使用的电能表,即待检测的正常任务电能表为2级,标准电能表精度远高于任务电能表;⑴Preparation: Prepare a standard electric energy meter of a three-phase smart electric energy meter connected by a transformer. The accuracy of the standard electric energy meter is 0.02 or 0.05. Level 2, the accuracy of the standard electric energy meter is much higher than that of the task electric energy meter;

对标准电能表制定特别的条码,以和正常表计进行区分;将标准电能表信息录入检定系统,在上表时能根据盲表条码自动识别;Make a special barcode for the standard electric energy meter to distinguish it from the normal meter; enter the information of the standard electric energy meter into the verification system, and automatically identify it according to the barcode of the blind meter when uploading the table;

⑵装表:在正在运行的流水线上表位置处,人工把标准电能表放到任意或指定的空托盘上,然后把标准电能表托盘放进绑定位和正常的任务电能表随机混合流入自动化检定线体;(2) Meter installation: Manually put the standard electric energy meter on any or designated empty tray at the meter position on the running assembly line, and then put the standard electric energy meter tray into the binding position and randomly mix the normal task electric energy meter into the automation Calibration line body;

⑶绑定:标准电能表经过绑定位后,流水线服务器会按照预先设置的方案把标准电能表的条码号和该托盘的信息进行绑定;(3) Binding: After the standard electric energy meter passes through the binding position, the assembly line server will bind the barcode number of the standard electric energy meter with the information of the tray according to the preset scheme;

⑷试验:标准电能表流经流水线上各个试验专机后,自动线会按照预定的试验方案执行,选择对标准电能表做试验或者不做试验;⑷Test: After the standard electric energy meter flows through each test machine on the assembly line, the automatic line will execute according to the predetermined test plan, and choose to test or not to test the standard electric energy meter;

⑸下表:标准电能表在各专机做完试验后,在流水线上按照设定的流程进入下表流程,标准电能表在流经下表流程后,PLC会自动根据绑定信息识别该托盘上的标准电能表,不执行下表流程,而是把标准电能表托盘自动放行,标准电能表托盘会自动流经绑定位,循环执行步骤⑶、⑷、⑸的流程;⑸The following table: After the standard electric energy meter is tested on each special machine, it enters the following table process on the assembly line according to the set process. For the standard energy meter, the process in the following table is not executed, but the standard energy meter tray is automatically released, and the standard energy meter tray will automatically flow through the binding position, and the process of steps ⑶, ⑷, and ⑸ is executed cyclically;

⑹数据处理:获取检测数据并比对该检测数据的准确性,并导出比对结果生成检测质量核查结果;⑹Data processing: obtain test data and compare the accuracy of the test data, and export the comparison results to generate test quality check results;

检测质量核查包括基本误差、测量重复性、标准器准确度、装置输出的对称度和稳定度、负载变化影响、同名端钮间电位差、相间交变磁场影响以及稳定性变差,检定获得计量性能对比标准为国标JJG597-2005以及GB/T-17215.701-2011的标准。Inspection quality inspection includes basic error, measurement repeatability, accuracy of standard instrument, symmetry and stability of device output, influence of load change, potential difference between terminals with the same name, influence of alternating magnetic field between phases, and stability deterioration. The performance comparison standard is the national standard JJG597-2005 and GB/T-17215.701-2011.

本实施例中标准电能表的工作原理参见图1所示:The operating principle of the standard electric energy meter in the present embodiment is shown in Fig. 1:

电压、电流输出分别经电阻分压取样和电流互感器取样变成小信号后,做A/D转换送DSP处理,DSP做实时U、I运算,求出实际功率值P,由P控制频率发生器产生比例于P的高频脉冲输出,该脉冲为电能高脉冲,由分频器分频得电能低脉冲,高、低频电能脉冲输出到接口。The voltage and current output are converted into small signals through resistance divider sampling and current transformer sampling respectively, then A/D conversion is performed and sent to DSP for processing, and DSP performs real-time U and I calculations to obtain the actual power value P, and the frequency generation is controlled by P The device generates a high-frequency pulse output proportional to P, which is a high-energy pulse, which is divided by a frequency divider to obtain a low-frequency pulse, and the high-frequency and low-frequency energy pulses are output to the interface.

测量P的同时,DSP还完成电压、电流真有效值相位、频率等的测量,该测值量通过485接口传送给自动化校表流水线。While measuring P, DSP also completes the measurement of voltage, current true RMS phase, frequency, etc., and the measured value is transmitted to the automatic meter calibration pipeline through the 485 interface.

尽管为说明目的公开了本发明的实施例和附图,但是本领域的技术人员可以理解:在不脱离本发明及所附权利要求的精神和范围内,各种替换、变化和修改都是可能的,因此,本发明的范围不局限于实施例和附图所公开的内容。Although the embodiments and drawings of the present invention are disclosed for the purpose of illustration, those skilled in the art can understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims Therefore, the scope of the present invention is not limited to what is disclosed in the embodiments and drawings.

Claims (3)

1. for a Detection job check method for access type three-phase intelligent electric-energy meter automatic calibration system, it is characterized in that: the verifying process flow step in automatic assembly line verification system is as follows:
(1) prepare: prepare the standard electric energy meter through mutual inductor access type three-phase intelligent electric-energy meter, standard electric energy meter precision is far above task electric energy meter; Special bar code is formulated to standard electric energy meter, to distinguish with normal table; By standard electric energy meter Data Enter verification system, automatically can identify according to blind table bar code when upper table;
(2) fill table: table position place on the streamline run, on the empty pallet manually standard electric energy meter being put into arbitrarily or specifying, then standard electric energy meter pallet is put into bindings bit and normal task electric energy meter and mix at random and flow into automatic calibration line body;
(3) bind: standard electric energy meter is after bindings bit, and streamline server can be bound the information of the bar code number of standard electric energy meter and this pallet according to the scheme pre-set;
(4) test: standard electric energy meter flows through on streamline after each test special machine, and transfer matic can perform according to predetermined testing program, selects to do experiment to standard electric energy meter or do not do experiment;
(5) following table: standard electric energy meter is after test finished by each special plane, streamline enters following table flow process according to the flow process of setting, standard electric energy meter is after flowing through following table flow process, PLC can automatically according to the standard electric energy meter on this pallet of binding information identification, do not perform following table flow process, but standard electric energy meter pallet is let pass automatically, standard electric energy meter pallet can flow through bindings bit automatically, and circulation performs step flow process (3), (4), (5);
(6) data processing: obtain and detect data and the accuracy of these detection data of comparison, and derive comparison result generation Detection job verification result;
Detection job verify comprise fundamental error, symmetry that measuring repeatability, standard accuracy, device export and degree of stability, load variable effect, potential difference (PD), the impact of alternate alternating magnetic field and bad stability between terminal of the same name, calibrating obtains the standard that metering performance contrast standard is GB JJG597-2005 and GB/T-17215.701-2011.
2. the Detection job check method for access type three-phase intelligent electric-energy meter automatic calibration system according to claim 1, is characterized in that: the precision of this standard electric energy meter is 0.02 grade or 0.05 grade, and normal tasks electric energy meter to be detected is 2 grades.
3. the Detection job check method for access type three-phase intelligent electric-energy meter automatic calibration system according to claim 1, is characterized in that: the principle of work of standard electric energy meter is:
Voltage, electric current export respectively after the sampling of electric resistance partial pressure sampling summation current transformer becomes small-signal, do A/D conversion and send DSP process, DSP does real-time U, I computing, obtain real power value P, produce ratio by P controlled frequency generator to export in the high-frequency impulse of P, this pulse is electric energy high impulse, and obtain the low pulse of electric energy by frequency divider frequency division, high and low frequency electrical energy pulse outputs to interface;
While measuring P, DSP completes the measurement of voltage, current true virtual value phase place, frequency etc., and this measured value amount sends robotization calibration streamline to by 485 interfaces.
CN201510342889.6A 2015-06-19 2015-06-19 Test quality check method for access-type three-phase intelligent electric energy meter automatic verification system Pending CN104914397A (en)

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CN110568396A (en) * 2019-03-11 2019-12-13 河南省计量科学研究院 An installed standard gauge and a system and method for calibrating using the gauge
CN112213686A (en) * 2020-08-27 2021-01-12 国网山东省电力公司日照供电公司 Checking system of automatic calibrating device of electric energy meter

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