阅读说明：本技术 一种标准互感器检定稳定性监控系统 (Standard transformer verification stability monitoring system ) 是由 贾枬 包积花 李晶晶 刘胜男 蔡永梅 李振东 杨艳 刘于超 张永敏 王中敏 于 2020-04-28 设计创作，主要内容包括：一种标准互感器检定稳定性监控系统,涉及标准互感器溯源技术领域,包括快速核查标准器组、工作标准器、被测标准器、互感器校验仪、互感器负荷箱、调压器、升流升压设备和服务器,调压器、升流升压设备、工作标准器、被测标准器、互感器负荷箱依次连接,快速核查标准器组与工作标准器连接,工作标准器、被测标准器、互感器负荷箱均与互感器校验仪连接,互感器校验仪连接服务器。本发明的有益效果在于：对标准器的送检前后的误差数据可做到有效的数据备份,解决送检过程不受控状态；实现期间核查自动测算,避免了人为错误和提高工作效率；在一定程度上解决送检难的问题,且对于一些不常用的标准器,在本系统的监控下,可以减少送检频次。(The utility model provides a standard mutual-inductor examination stability monitored control system, relate to standard mutual-inductor technical field that traces to the source, including quick check standard group, the work etalon, surveyed the etalon, the mutual-inductor check gauge, mutual-inductor load box, the voltage regulator, the class-ascending step-up equipment and server, the voltage regulator, the class-ascending step-up equipment, the work etalon, surveyed the etalon, mutual-inductor load box connects gradually, quick check standard group is connected with the work etalon, surveyed the etalon, mutual-inductor load box all is connected with the mutual-inductor check gauge, mutual-inductor check gauge connection server. The invention has the beneficial effects that: the error data before and after the submission of the standard can be effectively backed up, and the uncontrolled state in the submission process is solved; the automatic measurement and calculation of the period check are realized, the human error is avoided, and the working efficiency is improved; the problem of difficult submission is solved to a certain extent, and the submission frequency can be reduced for some less-common standard instruments under the monitoring of the system.)

1. The utility model provides a standard mutual-inductor examination stability monitored control system, is including checking the etalon group fast, the work etalon, by survey etalon, mutual-inductor check gauge, mutual-inductor load box, voltage regulator, the rising current equipment of stepping up and server, the voltage regulator, the rising current equipment of stepping up, the work etalon, by survey etalon, mutual-inductor load box connect gradually, check the etalon group fast and be connected with the work etalon, by survey etalon, mutual-inductor load box all are connected with the mutual-inductor check gauge, mutual-inductor check gauge connection server.

2. The system for monitoring the verification stability of the standard mutual inductor according to claim 1, wherein: the working standard device is used as a standard, the measured standard device converts voltage and current through the voltage regulator under the action of the rising current and the boosting of the rising current and boosting equipment and the loading of the transformer load box, the relative error of the measured standard device is read out on the transformer calibrator, and the server is connected to automatically transmit data to the server.

3. The system for monitoring the verification stability of the standard mutual inductor according to claim 1, wherein: the rapid checking standard set is used for checking whether errors of the standard deviate in a verification period or not at different voltage grades and different current transformation ratios.

4. The system for monitoring the verification stability of the standard mutual inductor according to claim 1, wherein: the server is provided with a data acquisition module, a data input module, an error analysis module, a data storage module and a period checking module;

a data acquisition module: when the working standard device traces the source upwards, performing data filing before and after submission, and acquiring error data; the method also comprises the acquisition of error data during period check;

a data entry module: the method is used for inputting relevant information, including a testing method, testing personnel, equipment models, environmental conditions and the like; the method also comprises the steps of inputting verification result data fed back by a verification unit after the standard device is regularly checked;

an error analysis module: analyzing the acquired error data and the verification result data; analyzing the characteristics of error data under different test methods, different testers, different types of equipment and different environmental conditions;

the period checking module: checking in an irregular period according to the working condition of the standard device, and checking the expansion uncertainty of the standard device according to error data acquired by the data acquisition module and verification result data input by the data input module; automatically measuring and calculating through a system, establishing a data judgment model, carrying out period checking and checking, and calculating the extension uncertainty of a standard device;

a data storage module: and the input and collected data, the error analysis result and the analysis and calculation result of period checking are stored to form a standard maintenance database.

5. The system for monitoring the verification stability of the standard mutual inductor according to claim 4, wherein: the period checking module also needs to periodically count error data of each set of standard devices to obtain the error variation range of each set of standard devices for establishing the standard, judge whether the error variation range is in the range required by the verification regulation, and timely maintain or replace the standard devices when the error variation range does not meet the range required by the verification regulation; and carrying out data comparison analysis on the same-level standard device, thereby obtaining the data dispersion.

Technical Field

The invention relates to the technical field of standard mutual inductor traceability, in particular to a standard mutual inductor verification stability monitoring system.

Background

In the field of metering, errors in the process of reducing transmission are successively transmitted by various quantity value transmission methods, such as standard numbers, standard signal transmission, standard substance manufacturing and transmission, standard measurement method regulation, standard cyclic ratio equivalence and the like. The methods solve a large number of practical problems in different professional fields and promote the scientific development of metering, but the methods mostly adopt one-way transmission and single measurement, pay more attention to substances, lack control on the measurement process and ignore the influence of human factors.

According to the requirements of measurement regulations, the traditional detection quantitative transmission system is mostly adopted at present, the adopted standard equipment is basically in the same technical level, the presented volume is large, and the problem of difficult inspection is basically the same.

The traditional quantitative detection and tracing method is convenient and simple, the number of inspection devices is small, the data processing capacity is small, and the requirement on the quality of testers is not high. The method has the disadvantages that only the measurement standard is looked at, the influence of the quantity transmission process and other factors is ignored, the standard mutual inductor lacks a monitoring means in the process of submitting for inspection, and no backup can be checked if the quantity value is out of order. Also due to the limitations of conventional mass transfer, the field verification is also in an open-loop operation mode, and no analytical judgment is helpful for the problems which may occur.

In order to maintain the credibility of the calibration and calibration state of the standard, a period check test needs to be carried out on whether the indication value of the standard is maintained within a specified time interval or not within a specified maximum allowable error or expanded uncertainty or accuracy, and in the actual period check work, the period check calculation process needs to be manually calculated, so that the calculation is complicated and the accuracy is poor.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a standard transformer verification stability monitoring system, which is used for monitoring and controlling the verification stability of a standard transformer by acquiring, analyzing and profiling the error data of a standard instrument and automatically measuring and calculating, and simply, quickly and effectively carrying out period check inspection.

The invention provides a monitoring system for detecting stability of a standard transformer, which comprises a rapid checking standard group, a working standard device, a measured standard device, a transformer calibrator, a transformer load box, a voltage regulator, an up-flow and up-pressure device and a server, wherein the voltage regulator, the up-flow and up-pressure device, the working standard device, the measured standard device and the transformer load box are sequentially connected, the rapid checking standard group is connected with the working standard device, the measured standard device and the transformer load box are all connected with the transformer calibrator, and the transformer calibrator is connected with the server. In the connection, except for the network cable connection between the mutual inductor calibrator and the server, the rest of the connections are all electric connections, and data are transmitted to the server from the mutual inductor calibrator.

The working standard device is used as a standard, the measured standard device converts voltage and current through the voltage regulator under the action of the rising current and the boosting of the rising current and boosting equipment and the loading of the transformer load box, the relative error of the measured standard device is read out on the transformer calibrator, and the server is connected to automatically transmit data to the server.

The rapid checking standard set is used for checking whether errors of the standard deviate in a verification period or not at different voltage grades and different current transformation ratios.

The server is provided with a data acquisition module, a data input module, an error analysis module, a data storage module and a period checking module;

a data acquisition module: when the working standard device traces the source upwards, performing data filing before and after submission, and acquiring error data; the method also comprises the acquisition of error data during period check;

a data entry module: the method is used for inputting relevant information, including a testing method, testing personnel, equipment models, environmental conditions and the like; and the verification result data fed back by the verification unit after the standard device is recorded for periodic inspection.

An error analysis module: analyzing the acquired error data and the verification result data; and analyzing the characteristics of error data under different test methods, different testers, different types of equipment and different environmental conditions.

The period checking module: checking in an irregular period according to the working condition of the standard device, and checking the expansion uncertainty of the standard device according to error data acquired by the data acquisition module and verification result data input by the data input module; the system automatically measures and calculates, establishes a data judgment model, simply, quickly and effectively carries out period check and inspection, calculates the extension uncertainty of the standard device, judges the working performance state of the standard device, and maintains or replaces the standard device.

A data storage module: and the input and collected data, the error analysis result and the analysis and calculation result of period checking are stored to form a standard maintenance database.

The period checking module also needs to count error data of each set of standard device regularly to obtain error variation range of each set of standard device for establishing the standard, judges whether the error variation range is in the range required by the verification regulation, and carries out maintenance or replacement in time when the error variation range does not meet the range required by the verification regulation. And carrying out data comparison analysis on the same-level standard device, thereby obtaining the data dispersion.

The method comprises the steps of collecting error data and checking the error data in the period, wherein the used working standard device is not fixed, a standard device with stable performance is generally selected, and relevant information of the working standard device is input during each operation so as to distinguish and observe the influence of different working standard devices on the data.

The using method of the invention comprises the following steps: when work etalon upwards traces to the source, before the submission, utilize this system after the submission, to etalon collection error data, error data still includes: error data acquisition is carried out on the standard device regularly, and error data acquisition is carried out in the period checking process which is carried out regularly at a later stage, namely the system is used for monitoring the error of the standard device in the whole service life; when error data is collected every time, a testing method adopted at that time, a tester for testing, the equipment model of other used equipment and an environmental condition during collection need to be recorded so as to monitor the error of the standard device under different conditions; and analyzing the acquired error data, namely analyzing the error, and analyzing the characteristics and the rules of the error data under different test methods, different testers, different types of equipment and different environmental conditions.

According to the working condition of the standard device, irregular period checking is carried out, for unstable, frequently used and relatively aged standard devices, the frequency of period checking is increased, otherwise, the frequency is reduced, the expansion uncertainty of the standard device is calculated according to error data collected by the data collection module and verification result data recorded by the data entry module, the working performance state of the standard device is judged, and the error data of each set of standard device is counted regularly, whether the error change range of the standard device meets the range required by verification regulations is judged, and when the error change range of the standard device does not meet the requirement, maintenance or replacement is carried out in time, so that the performance of the standard device in the whole service period is monitored, maintenance and adjustment are carried out in time, and the verification stability of the standard device is controlled.

The invention has the beneficial effects that:

by the system, effective data backup can be achieved for error data before and after submission of the standard device, uncontrolled state in submission process is solved, stable and reliable quantity value transmission is ensured, data resources accumulated by original equipment and multi-year standard maintenance are brought into play to the maximum extent, voltage and current proportional quantity value backup is achieved, and an attempt is provided for automatic verification development and change trend in future.

The method has the advantages of realizing automatic measurement and calculation of period check, avoiding human errors, improving working efficiency, realizing reliable error control on the standard device, and carrying out period check simply, quickly and effectively.

And completing data statistics comparison and judgment processing among the sets of standard groups to obtain the dispersibility of the measurement data of each detection system, and obtaining the error between the measurement data and the national standard laboratory measurement system through tracing of the comprehensive standard device.

The uncertainty and the error change range of each standard are calculated to monitor the stability of the standard, and corresponding processing measures, such as returning to the factory for maintenance or directly replacing a new standard, are carried out on the standard with the uncertainty exceeding a specified level or the standard with the error change range exceeding the range required by a verification regulation in time without determining the working performance state of the standard by sending inspection, so that the number of times of sending inspection is reduced.

Therefore, the system can solve the problem of difficult delivery to a certain extent, and for some unusual standard instruments, under the monitoring of the system, the system can prolong the delivery cycle, reduce the delivery frequency and solve the problem of difficult delivery to a certain extent.

The calibration capability of the legal metrological calibration mechanism and the skill level of a calibrator can be observed through system data analysis and comparison, the accuracy and consistency degree of a laboratory measurement value and a measurement result can be verified, the electric energy metrological calibration work is promoted to be more scientific, rigorous and standard, the accuracy and reliability of a metering standard value of the legal metrological calibration mechanism can be ensured, and the analysis and comparison result can be used as an effective proof of various metering certification and metering authorization review evidences and laboratory capability.

Drawings

FIG. 1 is a schematic view showing the connection of the parts of the present invention.

Detailed Description