CN202870151U - Harmonic current test system with novel current converter - Google Patents
Harmonic current test system with novel current converter Download PDFInfo
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- CN202870151U CN202870151U CN 201220562176 CN201220562176U CN202870151U CN 202870151 U CN202870151 U CN 202870151U CN 201220562176 CN201220562176 CN 201220562176 CN 201220562176 U CN201220562176 U CN 201220562176U CN 202870151 U CN202870151 U CN 202870151U
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Abstract
The utility model relates to a harmonic current test system with a novel current converter, wherein a public power grid output is connected with a standard test power supply, the test power supply is connected with the large current input module of a current converter to provide a power supply input satisfying test requirements for a device to be tested, a voltage output end and a harmonic current sampling module transmits a voltage measurement value and a harmonic current measurement value to a harmonic analyzer respectively, a control computer collects the voltage value and the harmonic value obtained by the harmonic analyzer to complete the control signal output of the harmonic analyzer, the compensation of the test power supply, and the harmonic analysis work, and the large current input module and a large current output module inside the current converter are respectively provided with an input power supply switch and an output power supply switch which can be switched on and off. The current converter and the prior harmonic analyzer are combined to form a large-current industrial device harmonic test system, and the test system can perform harmonic performance detection on a single-phase device and a three-phase device, thereby making up the defects that most professional labs are defective in test capability.
Description
Technical field
The utility model relates to a kind of electrical detection facility, and is particularly a kind of be used to measuring the harmonic current test macro of every phase input current greater than the electromechanical equipment of 16 A.
Background technology
Harmonic problem is a major issue of electric power system power supply quality, the vital interests of the power consumer that affects the livelihood of every family.It is not standby that some nonlinear large electric current commercial units, (1) have the iron core of ferromagnetic saturation characteristic, as: transformer, reactor etc.; (2) equipment take electric arc with strong nonlinear characteristic as actuating medium, as: ac arc wedling machine, electric furnace arrangement for producing steel etc.; (3) take the switch power supply equipment of power electronic element as the basis, as: various electric power convertor equipments (rectifier, inverter, frequency converter), phased speed governing and regulator, jumbo electric power thyristor controllable switch device etc. are the major reasons that harmonic wave produces.
Harmonic wave makes the Efficiency Decreasing of production, transmission and the utilization of electric energy, makes device of overheating of electrical, produces vibration and noise, and make insulation ag(e)ing, and shorten serviceable life, even breaks down or burn.
For reducing the humorous wave interference of electric power system, must effectively carry out the standard of relevant harmonic wave, strengthen harmonic management.National Specification only has through overtesting and confirms that the equipment meet the requirement of national standard limit value just can be linked in the distribution system.Thereby the overall harmonic current level of electronics, electrical equipment being injected electric power system is limited.
Most of laboratory and Some Enterprises all have electronics, electrical equipment harmonic standard compliance test ability less than 16A, can carry out qualified checking to some household electrical appliance, electric tool, IT, AV product.And to greater than the electromechanical equipment more than the 16A, such as rare test capabilities such as the worker of large-scale arc welding equipment, large-scale large electric currents such as power meter, section, doctor's equipment, make the equipment access electrical network that does not meet harmonic standard, have a strong impact on the quality of power supply of public electric wire net.
Summary of the invention
The utility model is the problem of studying greater than the test of the equipment harmonic current more than the 16A for to electric current, a kind of harmonic current test macro with the New type of current converter has been proposed, use this current converter and original harmonic analysis instrument in conjunction with setting up into large electric current commercial unit harmonic wave test macro, make most of commercial unit, test such as the harmonic wave accordances such as industry science medical courses in general equipment of large-scale arc welding equipment, large-scale power meter, large electric current can be carried out, thereby guarantees the degree of purity of utility network.
The technical solution of the utility model is: with the harmonic current test macro of New type of current converter, comprise harmonic analysis instrument, testing power supply, the control computer, also comprise the New type of current converter, the New type of current converter comprises large electric current load module, input and output connecting circuit module, the harmonic wave sampling module, two High-current output modules, on the large electric current load module reference power supply input end and input power switch are arranged, power output end and out-put supply switch are arranged on two High-current output modules, public electric wire net output Engage of standard testing power supply, testing power supply is connected with current converter reference power supply input end, current probe and sample circuit gather the harmonic current signal of equipment under test in the harmonic wave sampling module of current converter inside, current converter is sent output voltage and harmonic wave current sampling data into harmonic analysis instrument respectively by harmonic wave sampling module and High-current output module, the control computer gathers voltage and the harmonic value that harmonic analysis instrument obtains, and output a control signal to harmonic analysis instrument and carry out voltage compensation to output a control signal to testing power supply, control software carries out frequency analysis and standard compliance is judged in the control computer.
Described New type of current converter is the high-temperature insulation shell, have in the current converter and reach the mutually large electric current load module of 96 A/, input and output connecting circuit module, harmonic wave sampling module, two 96 A/ phase High-current output modules, on the large electric current load module reference power supply input end and input power switch are arranged, can carry out the harmonic wave test to the equipment that input current reaches 96 A/ phases.
The beneficial effects of the utility model are: the harmonic current test macro of the utility model band New type of current converter, current converter and original harmonic analysis instrument are in conjunction with setting up large electric current commercial unit harmonic wave test macro, this test macro can carry out to the large electric current commercial unit of single-phase equipment (input current is to 96A), three-phase equipment (every phase input current is to 32A) the harmonic wave accordance and detect, and it is not enough to remedy most of professional test laboratory harmonic wave power of test.
Description of drawings
Fig. 1 is New type of current converter structure synoptic diagram in the harmonic current test macro of the utility model band New type of current converter;
Fig. 2 is harmonic current sampling module theory structure synoptic diagram;
Fig. 3 is the configuration theory diagram of the harmonic current test macro of the utility model band New type of current converter.
Embodiment
New type of current converter structure synoptic diagram as shown in Figure 1, wherein: 1 is the high-temperature insulation shell; 2 is large electric current load module; 3 is the input power switch; 4 is the reference power supply input end; 5 are input and output connecting circuit module; 6 is the harmonic current sampling module; 7 is power output end one; 8 is High-current output module one; 9 is power output end two; 10 is High-current output module two; 11 is the out-put supply switch.
By preferred circuit module 5 large electric current load module 2 is connected with High-current output module 8 or 10,8 and 10 all available power switch 11 separately can be switched on or switched off power supply; Harmonic current sampling module 6 interior current probes and Acquisition Circuit are carried out sampling processing to the harmonic circuit of equipment under test, and harmonic current sampling module 6 directly is connected with harmonic wave test testing tool, and good stability is easy to connect.
Be harmonic current sampling module theory structure synoptic diagram such as Fig. 2.
As shown in Figure 3 with the configuration theory diagram of the harmonic current test macro of New type of current converter, with current converter 21 and harmonic analysis instrument 24, standard testing power supply 20, control computer 25 connects, public electric wire net output Engage of standard testing power supply 20, testing power supply connects the reference power supply input end 4 of current converter 21, the current probe 22 of current converter 21 inside gathers the current signal of equipment under test 23, current probe 22 connects sampling module 6, current converter 21 is by High-current output module 8,10 and sampling module 6 voltage and harmonic wave current sampling data are sent into harmonic analysis instrument 24, harmonic analysis instrument 24 and 25 mutual exchanges data and the comparisons of control computer, control computer 25 gathers voltage and the harmonic value that frequency analyses 24 instrument obtain, and finishes the control harmonic analysis instrument and outputs a control signal to that testing power supply 20 compensates and frequency analysis work.
With the harmonic current test macro of New type of current converter make up finish after, can carry out the harmonic standard accordance to large electric current commercial unit and detect.This detection system has stronger versatility simultaneously, and the harmonic wave that can be used for the every field such as family expenses, industry, science, medical treatment and scientific equipment detects.
Claims (2)
1. harmonic current test macro with the New type of current converter, comprise harmonic analysis instrument, testing power supply, the control computer, it is characterized in that, also comprise the New type of current converter, the New type of current converter comprises large electric current load module, input and output connecting circuit module, the harmonic wave sampling module, two High-current output modules, on the large electric current load module reference power supply input end and input power switch are arranged, power output end and out-put supply switch are arranged on two High-current output modules, public electric wire net output Engage of standard testing power supply, testing power supply is connected with current converter reference power supply input end, current probe and sample circuit gather the harmonic current signal of equipment under test in the harmonic wave sampling module of current converter inside, current converter is sent output voltage and harmonic wave current sampling data into harmonic analysis instrument respectively by harmonic wave sampling module and High-current output module, the control computer gathers voltage and the harmonic value that harmonic analysis instrument obtains, and output a control signal to harmonic analysis instrument and carry out voltage compensation to output a control signal to testing power supply, control software carries out frequency analysis and standard compliance is judged in the control computer.
2. described harmonic current test macro with the New type of current converter according to claim 1, it is characterized in that, described New type of current converter is the high-temperature insulation shell, have in the current converter and reach the mutually large electric current load module of 96 A/, input and output connecting circuit module, harmonic wave sampling module, two 96 A/ phase High-current output modules, on the large electric current load module reference power supply input end and input power switch are arranged, can carry out the harmonic wave test to the equipment that input current reaches 96 A/ phases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562176 CN202870151U (en) | 2012-10-30 | 2012-10-30 | Harmonic current test system with novel current converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562176 CN202870151U (en) | 2012-10-30 | 2012-10-30 | Harmonic current test system with novel current converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202870151U true CN202870151U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220562176 Expired - Fee Related CN202870151U (en) | 2012-10-30 | 2012-10-30 | Harmonic current test system with novel current converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN202870151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890179A (en) * | 2012-10-30 | 2013-01-23 | 中华人民共和国上海出入境检验检疫局 | Harmonic current test system with novel current converter |
| CN107607821A (en) * | 2017-10-25 | 2018-01-19 | 广西电网有限责任公司电力科学研究院 | A kind of controllable middle pressure XLPE cable ageing test apparatus of harmonic content |
-
2012
- 2012-10-30 CN CN 201220562176 patent/CN202870151U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890179A (en) * | 2012-10-30 | 2013-01-23 | 中华人民共和国上海出入境检验检疫局 | Harmonic current test system with novel current converter |
| CN102890179B (en) * | 2012-10-30 | 2015-05-20 | 中华人民共和国上海出入境检验检疫局 | Harmonic current test system with novel current converter |
| CN107607821A (en) * | 2017-10-25 | 2018-01-19 | 广西电网有限责任公司电力科学研究院 | A kind of controllable middle pressure XLPE cable ageing test apparatus of harmonic content |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20131030 |