CN202433517U - Portable EMC (electromagnetic compatibility) test-level detecting device for electric energy meter - Google Patents

Portable EMC (electromagnetic compatibility) test-level detecting device for electric energy meter Download PDF

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Publication number
CN202433517U
CN202433517U CN2012200295061U CN201220029506U CN202433517U CN 202433517 U CN202433517 U CN 202433517U CN 2012200295061 U CN2012200295061 U CN 2012200295061U CN 201220029506 U CN201220029506 U CN 201220029506U CN 202433517 U CN202433517 U CN 202433517U
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CN
China
Prior art keywords
electric energy
energy meter
current source
sampling
portable
Prior art date
Application number
CN2012200295061U
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Chinese (zh)
Inventor
周雷
陈道升
邓凌翔
Original Assignee
江苏省计量科学研究院
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Priority to CN2012200295061U priority Critical patent/CN202433517U/en
Application granted granted Critical
Publication of CN202433517U publication Critical patent/CN202433517U/en

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Abstract

The utility model discloses a portable EMC (electromagnetic compatibility) test-level detecting device for an electric energy meter; the detecting device comprises a metal housing; a public machine, a voltage source, a current source and a standard electric energy meter are arranged in the metal housing; the public machine is connected with the voltage source and the current source respectively; the voltage source and the current source are then connected to a detected electric energy meter by an interference signal generating device arranged at the outer part of the metal housing; meanwhile, the sampling end of the detected electric energy meter is connected with a sampling signal input through a sampling device; the standard electric energy meter is connected with the voltage source, the current source, the interference signal generating device and the public machine; the detecting device is characterized in that a decoupling network is arranged between the voltage source and the interference signal generating device, between the current source and the interference signal generating device as well as between the sampling device and the public machine respectively. The detecting device is convenient to use and is capable of working normally even under interferences such as fast transient pulse burst, surge, conduction interference of radio frequency field induction and attenuation oscillation wave.

Description

A kind of portable EMC test level calibrator for watt-hour meter
Technical field
The utility model relates to a kind of electric energy metrical technical field, specifically is a kind of portable EMC test level calibrator for watt-hour meter.
Background technology
The conduction interference immunity to interference of the fast transient pulse train immunity to interference of regulation, surge immunity, radio-frequency field induction and the test of attenuation oscillasion impulse immunity to interference among the electric energy meter type evaluation outline JJF 1245.1-2010 " the general requirement of installing type electric energy meter type evaluation outline "; All require when applying interference the precision with calibrator for watt-hour meter check electric energy meter, the test unit that satisfies this test at present is generally bulky, cost an arm and a leg.Though and existing portable electric meter verifying attachment is easy to use on the market,, can't directly be used for the above-mentioned test of electric energy meter owing to do not possess Immunity Performance.Main cause is all to lack decoupling network on voltage, current circuit and the sampling circuit of these calibrator for watt-hour meter, especially can isolate the decoupling network of above-mentioned various undesired signals simultaneously.
The utility model content
The utility model technical matters to be solved provides a kind of portable EMC test level calibrator for watt-hour meter; It is not only easy to use, and still can operate as normal under the situation that receives various interference (conduction interference and the attenuation oscillasion impulse that comprise fast transient pulse train, surge, radio-frequency field induction).
The described a kind of portable EMC test level calibrator for watt-hour meter of the utility model; Comprise metal shell; In metal shell, be provided with public mechanical, electrical potential source, current source and master meter, said public machine connects voltage source and current source respectively, and voltage source is connected tested electric energy meter through being arranged at the outside interference signal generation device of metal shell again with current source; The sampling end of tested electric energy meter connects the sampled signal input port of public machine through sampling apparatus simultaneously; Master meter is connected with voltage source, current source, interference signal generation device and public machine, it is characterized in that, at voltage source and interference signal generation device; Current source and interference signal generation device, and be provided with decoupling network between sampling apparatus and the public machine.
The multistage decoupling network that said decoupling network preferably is made up of voltage dependent resistor (VDR), magnet ring, inductance and electric capacity.
Said public machine is connected with external system power supply through power-supply filter, on public machine, also is provided with RS232 interface and Ethernet interface.
The beneficial effect of the utility model:
The present invention is when guaranteeing measuring accuracy, and operation is convenient, directly perceived, has improved testing efficiency greatly.Device itself has good electromagnetic immunity performance, can directly be used for the tests such as conduction interference immunity to interference and attenuation oscillasion impulse immunity to interference of fast transient pulse train immunity to interference, surge immunity, the radio-frequency field induction of electric energy meter, has simplified a whole set of test macro.And adopt the automatic test means to simplify test man's work, farthest having avoided the people is the test errors that causes, and has reduced the dependence of measuring accuracy for tester's experience and ability.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Like Fig. 1, the described a kind of portable EMC test level calibrator for watt-hour meter of the utility model, it adopts the metal shell structure, and the seam crossing of shell should keep the favorable conductive continuity.When interference source applies various conducted interference signal to electric energy meter; When especially the fast-pulse crowd is with the decay Sasser; Electronic equipment around contained radio-frequency component can disturb with the mode of radiation in the undesired signal; Design good metal shell mechanism has shielding character preferably, thereby can suppress this radiation interference.The device front is display screen, button and various signal wire interface, comprising: voltage signal line, current signal line, pulse signal-line etc.Ports such as RS232, Ethernet, apparatus system electricity then are arranged in the device rear side.The utility model should be selected the good display screen of Electro Magnetic Compatibility own for use; The processing of button should guarantee that the button place is unlikely to produce serious electromagnetic leakage or intrusion, the interface of various lines all should decouple (filtering) handle.
In metal shell, be provided with public mechanical, electrical potential source, current source and master meter; Public machine wherein is connected with external system power supply through power-supply filter; Inner at metal shell; Public machine connects voltage source and current source respectively; Voltage source and current source are connected tested electric energy meter through being arranged at the outside interference signal generation device of metal shell again, and the sampling end of tested electric energy meter connects the sampled signal input port of public machine through sampling apparatus simultaneously, and master meter is connected with voltage source, current source, interference signal generation device and public machine.At voltage source and interference signal generation device; Current source and interference signal generation device; And be provided with decoupling network between sampling apparatus and the public machine; Wherein on the voltage and current line decouple particularly important, the multistage decoupling network that should adopt voltage dependent resistor (VDR), magnet ring, inductance and electric capacity to form, decoupling network should be fixed on the device inwall through metal shell.Voltage source in the device and current source are that tested electric energy meter provides the voltage and current signal through decoupling network; Thereby guarantee that when carrying out the immunity to interference test undesired signal can be through the operate as normal of pressure-wire or electric current line entering calibrator for watt-hour meter countermeasure set.
Portable EMC test level electric energy meter pulser timer/sampling apparatus in the utility model can read the pulse signal that characterizes electric weight through light signal and contact signal dual mode from tested electric energy meter; Send into public machine simultaneously with the standard electric energy meter pulse signal that verifying attachment is inner; Calculate relative error, thereby measure the accuracy of tested electric energy meter.Itself possesses good interference free performance with the matching used sampling apparatus of verifying attachment; Be connected through shielding line between the verifying attachment; And in verifying attachment, be equipped with the decoupling network of corresponding signal line, thereby guarantee that undesired signal can not get into verifying attachment through sampling end.Public machine can pass through the program control interference signal generation devices of PORT COM such as RS232 or Ethernet, thereby realizes automatic test.
This device can program control various interference signal generation devices; Automatically carry out according to the regulation among the electric energy meter type evaluation outline JJF 1245.1-2010 " the general requirement of installing type electric energy meter type evaluation outline " electric energy meter fast transient pulse train immunity to interference, surge immunity, radio-frequency field induction conduction interference immunity to interference and the test of attenuation oscillasion impulse immunity to interference and generate record, thereby realize automatic test.
The concrete application approach of the utility model is a lot; The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement, these improve the protection domain that also should be regarded as the utility model.

Claims (4)

1. portable EMC test level calibrator for watt-hour meter; Comprise metal shell; In metal shell, be provided with public mechanical, electrical potential source, current source and master meter, said public machine connects voltage source and current source respectively, and voltage source is connected tested electric energy meter through being arranged at the outside interference signal generation device of metal shell again with current source; The sampling end of tested electric energy meter connects the sampled signal input port of public machine through sampling apparatus simultaneously; Master meter is connected with voltage source, current source, interference signal generation device and public machine, it is characterized in that, at voltage source and interference signal generation device; Current source and interference signal generation device, and be provided with decoupling network between sampling apparatus and the public machine.
2. portable EMC test level calibrator for watt-hour meter according to claim 1 is characterized in that the multistage decoupling network that said decoupling network is made up of voltage dependent resistor (VDR), magnet ring, inductance and electric capacity.
3. portable EMC test level calibrator for watt-hour meter according to claim 1 and 2 is characterized in that public machine is connected with external system power supply through power-supply filter.
4. portable EMC test level calibrator for watt-hour meter according to claim 1 and 2 is characterized in that, on public machine, is provided with RS232 interface and Ethernet interface.
CN2012200295061U 2012-01-30 2012-01-30 Portable EMC (electromagnetic compatibility) test-level detecting device for electric energy meter CN202433517U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200295061U CN202433517U (en) 2012-01-30 2012-01-30 Portable EMC (electromagnetic compatibility) test-level detecting device for electric energy meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200295061U CN202433517U (en) 2012-01-30 2012-01-30 Portable EMC (electromagnetic compatibility) test-level detecting device for electric energy meter

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CN202433517U true CN202433517U (en) 2012-09-12

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103439545A (en) * 2013-09-09 2013-12-11 扬州市万泰电器厂有限公司 Analysis design method for reducing radiation interference of intelligent electric energy meter
CN103558580A (en) * 2013-11-14 2014-02-05 国家电网公司 System and method for detecting surge immunity of electric energy meter
CN103576121A (en) * 2013-10-31 2014-02-12 惠州学院 Smart electric meter constant magnetic detecting system and method
CN103954927A (en) * 2014-05-21 2014-07-30 常州天合光能有限公司 Device for calibrating conversion of volume resistance and square resistance and calibration method thereof
CN103995247A (en) * 2014-05-28 2014-08-20 国家电网公司 Electric energy meter calibrating apparatus for anechoic chamber
CN105116369A (en) * 2015-09-09 2015-12-02 国网冀北电力有限公司电力科学研究院 Radio frequency radiation disturbance rejection degree test apparatus and system
CN105158584A (en) * 2015-08-11 2015-12-16 国电南瑞科技股份有限公司 Multi-source electromagnetic disturbance test equipment and test method
CN106932748A (en) * 2016-09-18 2017-07-07 北京市计量检测科学研究院 Electric energy meter tests means for anti-jamming
US10126350B2 (en) 2016-09-21 2018-11-13 Hamilton Sunstrand Corporation Detection of damper resistor degradation and failures
CN109541286A (en) * 2018-12-27 2019-03-29 方圆广电检验检测股份有限公司 A kind of pick-up current detection method and tester
CN110501657A (en) * 2019-09-18 2019-11-26 南方电网科学研究院有限责任公司 A kind of power supply reliability test device, method and apparatus
WO2021082532A1 (en) * 2019-10-29 2021-05-06 国网宁夏电力有限公司营销服务中心(国网宁夏电力有限公司计量中心) Test system and test method for intelligent electricity meter

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103439545A (en) * 2013-09-09 2013-12-11 扬州市万泰电器厂有限公司 Analysis design method for reducing radiation interference of intelligent electric energy meter
CN103439545B (en) * 2013-09-09 2016-05-04 扬州万泰电子科技有限公司 A kind of analysis design method that reduces intelligent electric energy meter radiation interference
CN103576121A (en) * 2013-10-31 2014-02-12 惠州学院 Smart electric meter constant magnetic detecting system and method
CN103576121B (en) * 2013-10-31 2018-07-10 惠州学院 A kind of intelligent electric meter perseverance magnetic detection system and its method
CN103558580A (en) * 2013-11-14 2014-02-05 国家电网公司 System and method for detecting surge immunity of electric energy meter
CN103954927A (en) * 2014-05-21 2014-07-30 常州天合光能有限公司 Device for calibrating conversion of volume resistance and square resistance and calibration method thereof
CN103954927B (en) * 2014-05-21 2016-03-23 常州天合光能有限公司 Volume resistance and square resistance change calibrating installation and calibration steps thereof
CN103995247A (en) * 2014-05-28 2014-08-20 国家电网公司 Electric energy meter calibrating apparatus for anechoic chamber
CN105158584A (en) * 2015-08-11 2015-12-16 国电南瑞科技股份有限公司 Multi-source electromagnetic disturbance test equipment and test method
CN105116369A (en) * 2015-09-09 2015-12-02 国网冀北电力有限公司电力科学研究院 Radio frequency radiation disturbance rejection degree test apparatus and system
CN106932748A (en) * 2016-09-18 2017-07-07 北京市计量检测科学研究院 Electric energy meter tests means for anti-jamming
US10126350B2 (en) 2016-09-21 2018-11-13 Hamilton Sunstrand Corporation Detection of damper resistor degradation and failures
CN109541286A (en) * 2018-12-27 2019-03-29 方圆广电检验检测股份有限公司 A kind of pick-up current detection method and tester
CN110501657A (en) * 2019-09-18 2019-11-26 南方电网科学研究院有限责任公司 A kind of power supply reliability test device, method and apparatus
WO2021082532A1 (en) * 2019-10-29 2021-05-06 国网宁夏电力有限公司营销服务中心(国网宁夏电力有限公司计量中心) Test system and test method for intelligent electricity meter

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