CN100543491C - The accuracy test macro of electric energy meter electrical fast transient (eft) interference test - Google Patents
The accuracy test macro of electric energy meter electrical fast transient (eft) interference test Download PDFInfo
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- CN100543491C CN100543491C CNB2007101727070A CN200710172707A CN100543491C CN 100543491 C CN100543491 C CN 100543491C CN B2007101727070 A CNB2007101727070 A CN B2007101727070A CN 200710172707 A CN200710172707 A CN 200710172707A CN 100543491 C CN100543491 C CN 100543491C
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Abstract
The present invention relates to a kind of accuracy test macro of electric energy meter electrical fast transient (eft) interference test, comprise and be provided with electric fast-pulse group generator, stabilized voltage supply, stabilized current supply, filter network circuit and coupled apparatus, be characterised in that on the electrical cable between stabilized current supply and tested table, to increase and be provided with the electronic type standard electric energy meter, photoelectric sampler and power source special thereof, undesired signal is applied directly on the tested table by coupled apparatus, make tested table place be subjected to disturbance state, and its testing apparatus and working line are isolated by the filter network circuit, avoid the influence of undesired signal, help improving the consistance and the repeatability of test data, compellent high precision measuring data is provided.
Description
Technical field
The present invention relates to electronic measuring technology field, particularly a kind of accuracy test macro of electric energy meter electrical fast transient (eft) interference test.
Background technology
At present when the anti-electrical fast transient (eft) interference test of electric energy meter, adopt GB GB/T17215.211-2006/IEC62052-11:2003 " the general requirement of alternating current measuring equipment, test and test condition the 11st part: measuring equipment " appendix figure E.2, figure introduced electric fast-pulse group's measurement circuit in E.3.With the voltage circuit is example, as shown in Figure 1, is exactly that appendix figure is E.2 in the above-mentioned standard.Adopt the measuring accuracy of this measuring method to depend primarily on the resolution of tested electric energy meter self, and the resolution of electric energy meter is widely different between the various models.In this standard, owing to do not give and show concrete accurate measurement means, and measuring accuracy depends primarily on the resolution of electric energy meter under the condition of no high precision reference, be difficult to accomplish the consistance and the repeatability of test result data, the correctness of test result data can not be convincing, thereby still owe desirable.
Summary of the invention
The objective of the invention is to provide a kind of electric energy meter when the electrical fast transient (eft) interference test, the method that measuring accuracy and electric energy meter resolution are irrelevant, help improving the consistance and the repeatability of test data, the accuracy test macro of the electric energy meter electrical fast transient (eft) interference test of compellent high precision measuring data is provided.
Comprise in the accuracy test macro of electric energy meter electrical fast transient (eft) interference test of the present invention and be provided with pulse generating unit, voltage source, current source, filter network and coupled apparatus, filter network is arranged on the current output terminal of the voltage output end of voltage source and current source, and is connected to tested table.When carrying out the voltage circuit interference test, coupled apparatus is serially connected with between tested table and the filter network voltage circuit; When carrying out the current circuit interference test, coupled apparatus is serially connected with between tested table and the filter network current circuit.Be characterised in that in metering circuit, also to increase and be provided with electronic type standard electric energy meter, photoelectric sampler and power source special thereof, wherein: described electronic type standard electric energy meter testing current end is connected in series on the electrical cable that is arranged between current source and tested table, and the voltage output end of voltage tester end and voltage source is electrically connected; Described photoelectric sampler is arranged between tested table and the electronic type standard electric energy meter by the power source special support performance.
During work, undesired signal from pulse generating unit is applied directly on the voltage circuit or current circuit end of tested table by coupled apparatus, tested table is in is subjected to disturbance state, then isolated in order to electronic type standard electric energy meter, current source and voltage source passage, make testing apparatus avoid the influence of undesired signal by filter network as measuring basis; Photoelectric sampler provides operating voltage by the power source special that provides separately, can not be subjected in the circuit lead and conduct caused high-frequency signal and disturb; Photoelectric sampler is gathered the electric pulse signal that the pulse pilot lamp on the tested table reflected and is converted electric signal to and delivers to the electronic type standard electric energy meter, so obtain identical power simultaneously with tested table at the electronic type standard electric energy meter, the Error Calculator that the electric impulse signal that the power transfer that the electronic type standard electric energy meter obtains becomes electric impulse signal and the tested table that receives to convert to is sent into the electronic type standard electric energy meter simultaneously compares, calculate relative error, thereby accurately measure the accuracy of tested table.
The present invention based on above-mentioned design: the accuracy test macro of electric energy meter electrical fast transient (eft) interference test, owing in measuring circuit, increase and be provided with the electronic type standard electric energy meter, photoelectric sampler and power source special thereof, various testing apparatuss and undesired signal are effectively isolated, and the disturbing effect when making measuring-signal avoid line work, measuring-signal is made comparisons with the electronic type standard electric energy meter that plays the measuring basis effect again simultaneously, thereby broken away from the influence that measuring accuracy is limited by electric energy meter resolution, made the measurement data not only accurate, and consistance and repeatability are all good.Therefore the positive technique effect of the accuracy test macro of electric energy meter electrical fast transient (eft) interference test of the present invention is: provide a kind of new accurate and effective method of testing for the electric energy meter industry 1.; 2. the testing apparatus to the electromagnetic interference (EMI) sensitivity provides enough electromagnetic interference safety margins, has improved the immunity to interference grade of metering outfit in the testing laboratory, makes the electrical fast transient (eft) immunity experiment be able to science, rationally, practically, easy to operate carry out; To the noise immunity performance of electric energy meter (electronic instrument) carry out specifically, accurately the examination and conformity assessment become possibility.And overall circuit is simple in structure and scientific and reasonable, and method is practical, and compellent measurement data can be provided exactly, has tangible technical advance, and very strong practicality is a kind of desirable update technology in the electric energy meter Performance Test System.
Description of drawings
Fig. 1 is the electrical installation schematic diagram of background technology test macro voltage circuit of the present invention:
Fig. 2 is the voltage circuit electrical installation schematic diagram of the embodiment of the invention:
Fig. 3 is the current circuit electrical installation schematic diagram of the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and exemplary embodiments.
In the technical background of the accuracy test macro of electric energy meter electrical fast transient (eft) interference test of the present invention, Fig. 1 give show be GB GB/T17215.211-2006/IEC62052-11:2003 " the general requirement of alternating current measuring equipment, test and test condition the 11st part: measuring equipment " appendix figure E.2, adopt the measuring accuracy of this measuring method to depend primarily on the resolution of tested watt-hour meter; And the resolution of electric energy meter, widely different between each model, in this standard, owing to do not give and show concrete accurate measurement means, and measuring accuracy differs greatly under the condition of no high precision reference, be difficult to accomplish the consistance and the repeatability of test result data, so be difficult to provide compellent test result data.
In the accuracy test macro of electric energy meter electrical fast transient (eft) interference test of the present invention, comprise and be provided with pulse generating unit, voltage source, current source, filter network and coupled apparatus.
In Fig. 2, during test, when undesired signal was applied to voltage circuit, filter network was arranged on the voltage output end of voltage source, and be electrically connected by the voltage terminal of coupled apparatus and tested table, the current output terminal of current source is electrically connected with the current terminal of tested table behind filter network; In Fig. 3, during test, when undesired signal was applied to current circuit, filter network was arranged on the current output terminal of current source, and be electrically connected by the current terminal of coupled apparatus and tested table, the voltage output end of voltage source is electrically connected with the voltage terminal of tested table behind filter network.Be characterised in that in metering circuit, also to increase and be provided with electronic type standard electric energy meter, photoelectric sampler and power source special thereof, wherein: described electronic type standard electric energy meter testing current end is connected in series on the electrical cable that is arranged between current source and tested table, and the voltage output end of voltage tester end and voltage source is electrically connected; Described photoelectric sampler is by the power source special support performance, be arranged between tested table and the electronic type standard electric energy meter, gather the electric pulse signal that the pulse pilot lamp on the tested table reflected and convert electric signal to and deliver to the electronic type standard electric energy meter, so obtain identical power simultaneously with tested table at the electronic type standard electric energy meter, the power transfer that the electronic type standard electric energy meter obtains becomes electric impulse signal, the Error Calculator that the electric impulse signal that converts to the tested table that receives is sent in the electronic type standard scale simultaneously compares, and calculates relative error.
Claims (1)
1. the accuracy test macro of an electric energy meter electrical fast transient (eft) interference test, comprise and be provided with group pulse generator, voltage source, current source, filter network and coupled apparatus, filter network is arranged on the current output terminal of the voltage output end of voltage source and current source, and be connected to tested table, when carrying out the voltage circuit interference test, coupled apparatus is serially connected with between tested table and the filter network voltage circuit, when carrying out the current circuit interference test, coupled apparatus is serially connected with between tested table and the filter network current circuit, it is characterized in that also increasing in the metering circuit and be provided with the electronic type standard electric energy meter, photoelectric sampler and power source special thereof, wherein:
A. described electronic type standard electric energy meter testing current end is connected in series on the electrical cable that is arranged between current source and filter network, and the voltage output end of voltage tester end and voltage source is electrically connected;
B. described photoelectric sampler is arranged between tested table and the electronic type standard electric energy meter by the power source special support performance, and photoelectric sampler is connected by light signal with tested table;
C. the undesired signal from electric fast-pulse group generator is applied directly on the voltage or current circuit end of tested table by coupled apparatus, tested table is in is subjected to disturbance state, then isolated in order to electronic type standard electric energy meter, current source and voltage source passage, avoided the influence of undesired signal by filter network as measuring basis;
D. photoelectric sampler is gathered the electric pulse signal that the pulse pilot lamp on the tested table reflected and is converted electric signal to and is sent to the electronic type standard electric energy meter, the electric impulse signal that the electronic type standard electric energy meter becomes electric impulse signal and the tested table that receives to convert to the power transfer that obtains is sent into the Error Calculator of electronic type standard electric energy meter simultaneously, calculate relative error, thereby measure the accuracy of tested table.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101727070A CN100543491C (en) | 2007-12-21 | 2007-12-21 | The accuracy test macro of electric energy meter electrical fast transient (eft) interference test |
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| CNB2007101727070A CN100543491C (en) | 2007-12-21 | 2007-12-21 | The accuracy test macro of electric energy meter electrical fast transient (eft) interference test |
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| CN101183147A CN101183147A (en) | 2008-05-21 |
| CN100543491C true CN100543491C (en) | 2009-09-23 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393511B (en) * | 2011-11-04 | 2014-07-16 | 广东电网公司广州供电局 | Online error verification device and test method for electronic electric energy meter rapid transient pulse train |
| CN102411135A (en) * | 2011-12-11 | 2012-04-11 | 浙江省计量科学研究院 | Device and method for testing electrical fast transient/burst (EFT/B) immunity of electric energy meter |
| CN105093162A (en) * | 2015-08-07 | 2015-11-25 | 国家电网公司 | Method and device for calibrating measurement error of electric energy meter under pulse train interference condition |
| CN105911513A (en) * | 2016-06-20 | 2016-08-31 | 国网江西省电力科学研究院 | System for testing immunity of intelligent ammeter to radio frequency conducted disturbance |
| CN106154212B (en) * | 2016-08-31 | 2019-04-30 | 宜兴市森维电子有限公司 | A kind of EFT/B immunity experiment system under the conditions of electric energy meter bringing onto load |
| CN109799411A (en) * | 2019-03-27 | 2019-05-24 | 杭州泰鼎检测技术有限公司 | A kind of large-current electric Clusters jamming immunity tester and its test method |
| CN110196363B (en) * | 2019-05-27 | 2021-03-02 | 杭州电子科技大学 | Industrial robot servo driver detection method based on electric fast transient pulse group |
-
2007
- 2007-12-21 CN CNB2007101727070A patent/CN100543491C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 交流电测量设备 通用要求、试验和试验条件 第11部分：测量设备. 中华人民共和国国家质量监督检验检疫总局，中国国家标准化管理委员会.中华人员民共和国国家标准，第GB/T 17215.211-2006卷第IEC 62052-11:2003期. 2006 |
| 交流电测量设备 通用要求、试验和试验条件 第11部分：测量设备. 中华人民共和国国家质量监督检验检疫总局，中国国家标准化管理委员会.中华人员民共和国国家标准，第GB/T 17215.211-2006卷第IEC 62052-11:2003期. 2006 * |
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Address after: Room 013, building 26, No. 315034, Maple Bay Road, Jiangbei District, Ningbo, Zhejiang, China Patentee after: Ningbo Lianneng Instrument Co., Ltd. Address before: 200001 Shanghai Road, Henan, Lane 271, Lane four, building 1, building Patentee before: Shanghai Lianneng Meter Co., Ltd. |
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