CN204347150U - Responsive household electrical appliance harmonic wave immunity to interference test platform - Google Patents
Responsive household electrical appliance harmonic wave immunity to interference test platform Download PDFInfo
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- CN204347150U CN204347150U CN201420555421.6U CN201420555421U CN204347150U CN 204347150 U CN204347150 U CN 204347150U CN 201420555421 U CN201420555421 U CN 201420555421U CN 204347150 U CN204347150 U CN 204347150U
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Abstract
The utility model relates to a kind of responsive household electrical appliance harmonic wave immunity to interference test platform; harmonic generation circuit exports many group harmonic waves and exports through the responsive household electrical appliance of relay protection circuit acceptance examination by supercircuit; voltage and current signal between signal acquisition module collection supercircuit is connected with tested responsive household electrical appliance; the signal collected converts digital quantity to through A/D change-over circuit and send microprocessor module process, obtains voltage effective value, current effective value, voltage distortion rate.Carry out the test of harmonic wave immunity to interference to responsive household electrical appliance, understand responsive household electrical appliance to harmonic wave sensitivity in various degree, can be electric company provides the quality of power supply of more high-quality to provide reference to user; Responsive household electrical appliance harmonic wave immunity to interference test platform has the function preventing maloperation and prevent harmonic oscillator output overloading, and test operation is safer.
Description
Technical field
The utility model relates to a kind of testing techniques of equipment, particularly one responsive household electrical appliance harmonic wave immunity to interference test platform.
Background technology
Present stage, China's power system development is for combining transmission of electricity, new energy grid-connected power and Novel load etc. for feature with bulk power grid, UHV (ultra-high voltage) and extra-high voltage long distance power transmission, interregional interconnected, alternating current-direct current, for improving controllability and the energy conversion efficiency of electric system, increasing power electronics type non-linear device is applied in electrical network.Meanwhile, along with scientific technological advance and living standard improve, responsive household electrical appliance are progressively popularized in life.Compared with traditional household electrical appliance, responsive household electrical appliance present some new features: the application of microprocessor makes household electrical appliance more intelligent; The improvement of operating circuit makes the work efficiency of responsive household electrical appliance higher.And known microprocessor is very responsive for electromagnetic interference (EMI), power supply harmonic wave belongs to Contacted EMI.When supply voltage contains harmonic wave, may there is operation irregularity in the household electrical appliance based on microprocessor, and gently then electric equipment short-term operation is abnormal, heavy then cause that electric equipment cannot work, user's loss of vital data etc.
For reducing because power quality problem causes electrical equipment operation irregularity situation, improve the quality of power supply immunity to interference of electrical equipment.Many research institutions have carried out the quality of power supply immunity to interference testing research of electrical equipment both at home and abroad.Chinese utility model patent " a kind of utility power quality control device to test platform " (utility application number: 201220135262.5 publication numbers: CN201220135262) discloses a kind of utility power quality control device to test platform, a kind of proving installation for ac mains or ac distribution network, relate in particular to a kind of test platform being applicable to testing high voltage AC network utility power quality control device, comprise the relay-protection tester and signal sampling laminating module that are connected to tested equipment, signal sampling laminating module comprises system voltage input end and load voltage input end, connect the system voltage output terminal of described relay-protection tester and the load voltage output terminal of tested equipment respectively, the system voltage output terminal of described relay-protection tester, is also connected to the system voltage input end of the Control protection secondary circuit of tested equipment, the output terminal of described signal sampling laminating module, the load voltage being connected to described Control protection secondary circuit detects input end.
Above-mentioned utility power quality control proving installation platform is confined to the higher large electric equipment electric energy quality test of electric pressure, does not consider that low pressure sensitive household electrical appliance quality of power supply immunity to interference is tested, particularly the harmonic wave immunity to interference test of regarding sensitive household electrical appliance.
Summary of the invention
The utility model considers very few problem in the test of electrical equipment quality of power supply immunity to interference to the test of low pressure sensitive household electrical appliance quality of power supply immunity to interference, propose a kind of responsive household electrical appliance harmonic wave immunity to interference test platform, build responsive household electrical appliance harmonic wave immunity to interference test platform, for testing typical susceptible household electrical appliance harmonic wave immunity to interference characteristic.
The technical solution of the utility model is: a kind of responsive household electrical appliance harmonic wave immunity to interference test platform; harmonic generation circuit exports many group harmonic waves and exports through the responsive household electrical appliance of relay protection circuit acceptance examination by supercircuit; voltage and current signal between signal acquisition module collection supercircuit is connected with tested responsive household electrical appliance; the signal collected converts digital quantity to through A/D change-over circuit and send microprocessor module process, obtains voltage effective value, current effective value, voltage distortion rate.
Described harmonic generation circuit comprises dsp chip and semiconductor converting module, dsp chip synthetic time series modulation waveform, controls the IGBT inverter circuit in semiconductor converting module, produces series of harmonic by IGBT inverter circuit.
Described supercircuit exports and connects relay protection circuit, and supercircuit output voltage feeds back to harmonic generation circuit through voltage detection circuit simultaneously.
The beneficial effects of the utility model are: the utility model responsive household electrical appliance harmonic wave immunity to interference test platform, harmonic wave generation module can export the harmonic wave of different components and distortion degree, and its overtone order exported may be up to 50 times, can simulate the impact of higher hamonic wave on responsive household electrical appliance; The harmonic wave immunity to interference of responsive household electrical appliance is tested, contribute to understanding responsive household electrical appliance to harmonic wave sensitivity in various degree, facilitate appliance manufacturers suitably to improve product, improve household electrical appliance harmonic waves noiseproof feature, reduce the inconvenience because power supply harmonic wave causes user and loss; Carry out the test of harmonic wave immunity to interference to responsive household electrical appliance, understand responsive household electrical appliance to harmonic wave sensitivity in various degree, can be electric company provides the quality of power supply of more high-quality to provide reference to user; Responsive household electrical appliance harmonic wave immunity to interference test platform has the function preventing maloperation and prevent harmonic oscillator output overloading, and test operation is safer.
Accompanying drawing explanation
Fig. 1 is the utility model responsive household electrical appliance harmonic wave immunity to interference test platform architecture figure;
The working current of IH intelligent electric cooker and voltage effective value oscillogram when Fig. 2 is the effect of the utility model sine wave;
The working current of IH intelligent electric cooker and voltage effective value oscillogram when Fig. 3 is the effect of the utility model particular harmonic.
Embodiment
The utility model responsive household electrical appliance harmonic wave immunity to interference test platform architecture figure as shown in Figure 1; this embodiment comprises host computer 1, communication module 2, dsp chip 3, semiconductor converting module 4, supercircuit 5, relay protection circuit 6, voltage detection circuit 7, signal acquisition module 8, microprocessor module 9, memory module 10, tested responsive household electrical appliance 11; here dsp chip 3 selects TMS320F2812 chip, and tested responsive household electrical appliance 11 select certain brand IH intelligent electric cooker.For probing into the voltage of different distortion degree to the impact of IH intelligent electric cooker, test needs setting to organize harmonic wave more.The course of work of responsive household electrical appliance harmonic wave immunity to interference test platform is introduced below: first export in host computer 1 and specify harmonic wave instruction for Fig. 2 and Fig. 3, through communication module 2, instruction is sent to TMS320F2812 chip 3, also can by other logical circuit triggering selection signals to TMS320F2812 chip 3, TMS320F2812 chip 3 calculates synthetic time series modulation waveform, to control the IGBT inverter circuit work in semiconductor converting module 4, the series of harmonic produced by IGBT inverter circuit, superposes through supercircuit 5 and exports; For guaranteeing experimental safe and preventing components and parts impaired, the maximum output capacity of test platform setting is 4500kVA, has installed relay protection circuit 6 additional in the exit of supercircuit 5 for this reason, when exceeding the max cap. that platform can export, relay protection circuit 6 action, disconnects the output of harmonic wave; Installed voltage detection circuit 7 additional in supercircuit 5 exit simultaneously; the output of supercircuit 5 and the situation of cut-offfing is responsible for feed back to host computer 1; when output relay protection circuit being detected is 0; now host computer will produce the instruction that TMS320F2812 chip 3 is interrupted, thus makes the output of IGBT inverter circuit be 0.
Secondly, supercircuit 5 is exported and is connected with certain brand IH intelligent electric cooker 11; Acting on the operating characteristic of IH intelligent electric cooker 11 for measuring different harmonic wave, needing to carry out record to test figure.The record of test figure is then completed primarily of the signal acquisition module 8 in responsive household electrical appliance harmonic wave immunity to interference test platform, microprocessor module 9, memory module 10; In test, signal acquisition module 8 gather supercircuit 5 be connected with certain brand IH intelligent electric cooker 11 between voltage and current signal, its electronic mutual inductor converts the voltage in test and current-mode analog quantity to voltage and current class that A/D circuit can process, and after convert analog quantity to digital quantity through A/D change-over circuit and send microprocessor module 9 to process, obtain required information, as voltage effective value, current effective value, voltage distortion rate etc.; Its result is by memory module 10 record, and memory module is furnished with corresponding I/O interface simultaneously, provides the download of test figure, conveniently carries out reprocessing to data.
As working current and voltage effective value oscillogram that Fig. 2 is the IH intelligent electric cooker when sine wave effect; Fig. 3 is working current and the voltage effective value oscillogram of the IH intelligent electric cooker when particular harmonic effect.
Claims (3)
1. a responsive household electrical appliance harmonic wave immunity to interference test platform; it is characterized in that; harmonic generation circuit exports many group harmonic waves and exports through the responsive household electrical appliance of relay protection circuit acceptance examination by supercircuit; voltage and current signal between signal acquisition module collection supercircuit is connected with tested responsive household electrical appliance; the signal collected converts digital quantity to through A/D change-over circuit and send microprocessor module process, obtains voltage effective value, current effective value, voltage distortion rate.
2. responsive household electrical appliance harmonic wave immunity to interference test platform according to claim 1, it is characterized in that, described harmonic generation circuit comprises dsp chip and semiconductor converting module, dsp chip synthetic time series modulation waveform, control the IGBT inverter circuit in semiconductor converting module, produce series of harmonic by IGBT inverter circuit.
3. responsive household electrical appliance harmonic wave immunity to interference test platform according to claim 2, is characterized in that, described supercircuit exports and connects relay protection circuit, and supercircuit output voltage feeds back to harmonic generation circuit through voltage detection circuit simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555421.6U CN204347150U (en) | 2014-09-25 | 2014-09-25 | Responsive household electrical appliance harmonic wave immunity to interference test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555421.6U CN204347150U (en) | 2014-09-25 | 2014-09-25 | Responsive household electrical appliance harmonic wave immunity to interference test platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204347150U true CN204347150U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420555421.6U Expired - Fee Related CN204347150U (en) | 2014-09-25 | 2014-09-25 | Responsive household electrical appliance harmonic wave immunity to interference test platform |
Country Status (1)
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| CN (1) | CN204347150U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353244A (en) * | 2015-11-16 | 2016-02-24 | 陕西航空电气有限责任公司 | Test method of voltage distortion frequency spectrum test |
| CN106338650A (en) * | 2016-10-21 | 2017-01-18 | 国网安徽省电力公司培训中心 | Harmonic wave measurement circuit |
| CN116047336A (en) * | 2023-03-27 | 2023-05-02 | 深圳市铂纳特斯自动化科技有限公司 | Battery formation monitoring method and device |
-
2014
- 2014-09-25 CN CN201420555421.6U patent/CN204347150U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353244A (en) * | 2015-11-16 | 2016-02-24 | 陕西航空电气有限责任公司 | Test method of voltage distortion frequency spectrum test |
| CN106338650A (en) * | 2016-10-21 | 2017-01-18 | 国网安徽省电力公司培训中心 | Harmonic wave measurement circuit |
| CN116047336A (en) * | 2023-03-27 | 2023-05-02 | 深圳市铂纳特斯自动化科技有限公司 | Battery formation monitoring method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20150925 |
|
| EXPY | Termination of patent right or utility model |