CN201689137U - Characteristic test device for electrical passive filter - Google Patents
Characteristic test device for electrical passive filter Download PDFInfo
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- CN201689137U CN201689137U CN2010201320979U CN201020132097U CN201689137U CN 201689137 U CN201689137 U CN 201689137U CN 2010201320979 U CN2010201320979 U CN 2010201320979U CN 201020132097 U CN201020132097 U CN 201020132097U CN 201689137 U CN201689137 U CN 201689137U
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Abstract
The utility model discloses a characteristic test device for electrical passive filter, comprising a master control module, a signal stimulus module, a signal collection module ad a testing algorithm module. The main control module drives the signal stimulus module and generates relevant testing signal based on user demand, and transmits the testing signal to the electrical passive filter to be tested. The main control module drives the signal collection module and performs sampling on the current and voltage of the electrical passive filter to be tested, and the sample is processed by the testing algorithm module and the characteristics of the electrical passive filter to be tested is achieved. The utility model has advantages of conducting a comprehensive investigation on the characteristics of the electrical passive filter to be tested, providing guarantee for the testing, adjustment and safe running of the electrical passive filter to be tested, and providing basis for the fault diagnosis and maintenance of the electrical passive filter to be tested.
Description
Technical field
The utility model relates to electric power passive filter proving installation, particularly a kind of proving installation that is used for electric power passive filter Characteristics Detection, adjustment and fault diagnosis.
Background technology
Along with the development of modern society, the user is more and more higher to the requirement with electricity quality on the one hand, and power electronic equipment is widely applied on the other hand, and nonlinear load is more and more in the industrial electrical network, has had a strong impact on the commercial power quality.These two forms serious contradiction, makes harmonic problem cause that people more and more pay close attention to.
Usually adopting the electric filtering technology to carry out harmonic pollution administers.The electric filtering technology is exactly that the harmonic wave injection electrical network that electric-power filter produces to hinder harmonic source is installed in electrical network, and the harmonic wave that perhaps hinders electric system flows into load end.Wave filter is to administer to use most economical, effective method in the higher hamonic wave, is a kind of power equipment that a part of harmonic current of electric system or reduction are added to some harmonic voltages of electric system that is used for reducing.At the metallurgy industry electric furnace steel making, various rolling mills, and on the bus of nonlinear-load such as electric railway, almost all install this equipment, its extensive employing can improve the quality of power supply, eliminates production hidden danger, increases output etc.
The electric power passive filter has advantages such as cost is low, capacity big, easy realization, uses wider.Currently used passive filtration unit is generally formed by power capacitor, air reactor and resistor appropriate combination, it and harmonic source parallel connection in service, its filtering principle is that some harmonic frequency is formed low impedance path, make corresponding harmonic current avoid entering transmission system through the passive filter short circuit, passive filter also provides capacitive fundamental wave reactive power power to harmonic load under the effect of fundamental voltage except the filtering harmonic wave, take into account the needs of harmonic source reactive-load compensation simultaneously.
The filter effect of passive filter depends on the passive filter frequency impedance characteristic, is subjected to the system architecture variable effect big.Filter Structures is improper, can cause frequency impedance characteristic not meet the demands, thereby is difficult to realize the electric filtering effect expected.In actual engineering design,,, carry out the structural design of passive filter so consider a plurality of indexs usually because be difficult to simply estimate its quality good or not for passive filter.And design methods existing assumed condition is more, relies on deviser's experience, therefore bears the character of much blindness, and is difficult to accurately realize nominal characteristic.Owing to be subjected to the influence of factors such as temperature, technology in the manufacture process, the processing technology of electric power passive filter can not strictly equal its nominal value, but allow to exist certain deviation according to accuracy class, so just inevitably introduced the components accuracy error.
More than these factors all make the frequency impedance characteristic of practical filter product frequency impedance characteristic and design have deviation, so in engineering is used, need the frequency impedance characteristic of electric power passive filter is carried out actual test, so that adjust accordingly according to application target.
At present do not have special testing tool, need operation signal generating means manually, carry out testing impedance by the frequency pointwise for electric power passive filter frequency impedance characteristic.Such method of testing precision is low, the running time is very long, is difficult to the frequency impedance characteristic of electric power passive filter is carried out sufficient precision measurement.
Summary of the invention
The purpose of this utility model provides a kind of device that electric power passive filter characteristic is tested, and a kind of proving installation that is used for electric power passive filter Characteristics Detection, adjustment and fault diagnosis particularly is provided.
For achieving the above object, the technical solution of the utility model provides a kind of device that is used for the characteristic test of electric power passive filter, it is characterized in that, comprise main control module, the signal excitation module, signal acquisition module and testing algorithm module, wherein said main control module is used to drive described signal excitation module and generates corresponding pumping signal, then this pumping signal is exported to tested electric power passive filter, simultaneously described main control module drives described signal acquisition module and the current and voltage signals of tested electric power passive filter is sampled and is handled by described testing algorithm module, obtains the characteristic of tested electric power passive filter.
Wherein said testing algorithm module according to the acquired signal of tested electric power passive filter electric current and voltage, is carried out analyzing and processing, calculates tested electric power passive filter characteristic.
Wherein, described main control module also comprises the testing software module, and described testing software module provides the operational administrative platform of filter characteristic test for the user.
Wherein, described main control module also comprises display module, load module and communication interface modules, and described load module is used for the user and sets various detecting informations by communication interface modules, and described display module is used to show described tested electric power passive filter characteristic.
Wherein, described signal excitation module comprises pumping signal generation module and pumping signal output module, described pumping signal generation module is used for setting formation voltage/current excitation signal according to the user under described master control module controls, and described pumping signal output module is used for the voltage/current pumping signal that described pumping signal generation module generates is carried out filtering and power amplification output.
Wherein, described signal acquisition module comprises gain control module, signal condition module, real-time acquisition module, described gain control module receives the gain control order of described main control module, be used for the adjustment that gains of signal to described real-time acquisition module output, described signal condition module is used for the output signal of described gain control module is carried out simulated modulation.Described real-time acquisition module is used under described master control module controls the simulating signal of described signal condition module output being carried out high speed acquisition, obtains digital sampled signal.
Technique scheme has following advantage: this device is sampled to the voltage and current signal of electric power passive filter, try to achieve electric power passive filter characteristic by testing algorithm, can investigate electric power passive filter characteristic comprehensively, for putting into operation, the detection of electric power passive filter, adjustment and safety provides safeguard, for electric power passive filter fault diagnosis and maintenance provide foundation.
Description of drawings
Fig. 1 is the theory structure synoptic diagram of the utility model embodiment.
Fig. 2 is the main control module structural representation of the utility model embodiment.
Fig. 3 is the signal acquisition module structural representation of the utility model embodiment.
Fig. 4 is the testing algorithm modular structure synoptic diagram of the utility model embodiment.
Fig. 5 is the electric power passive filter frequency characteristic test curve of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
The test philosophy of this testing scheme is as follows with method: the electric power passive filter is made up of according to different structures air core inductor, resistance and electric capacitor usually, is a typical linear system, constant frequency impedance characteristic when having.Give the input of electric power passive filter different voltage excitation signals, will obtain different current output signals.Electric power passive filter characteristic is made as Z (w), the voltage excitation signals u of given input (t)/U (w), then the electric power passive filter can produce corresponding current output signal i (t)/I (w); Obtain filter characteristic Z (w)=U (w)/I (w) according to circuit equation.
The concrete enforcement of this testing scheme is as follows: apply excitation input voltage signal u (t) for the electric power passive filter, measure current output signal i (t); Input signal and output signal are carried out pre-service and spectrum analysis, obtain U (w) and I (w); Calculate the frequency impedance characteristic of electric-power filter then, Z (w)=U (w)/I (w); The frequency impedance characteristic of the electric-power filter mode with figure is shown; Referring to Fig. 5.
To describe the concrete enforcement of system's each several part below in detail:
Referring to Fig. 1 and Fig. 2, main control module is set the drive signal stimulating module according to the user and is generated corresponding test signal, then this test signal is exported to tested electric power passive filter, main control module drive signal acquisition module is sampled to the current and voltage signals of tested electric power passive filter and is handled by the testing algorithm module simultaneously, obtains tested electric power passive filter characteristic.The user at first sets the test substance by testing software and load module during work, main control module encourages passive power filter then, the control test process, the calculating filter characteristic is preserved filter characteristic result of calculation and is drawn out corresponding filter characteristic test curve at display interface.
It is digital signal that signal acquisition module is used for tested current/voltage analog signal conversion, sends to main control module; Referring to Fig. 3, it can comprise gain control module, signal condition module, real-time acquisition module etc.During work, signal acquisition module is accepted the gain control instruction of main control module, sets corresponding signal sampling gain; Accept the acquisition instructions of main control module, gather the current and voltage signals of tested wave filter; Accept the move instruction of main control module, the signal that collects is sent to main control module;
The testing algorithm module referring to Fig. 4, is gathered the voltage and current signal of electric power passive filter, according to test philosophy and method, calculates the characteristic of electric power passive filter, gives main control module with result of calculation;
Main control module, referring to Fig. 5, by display module, load module, communication interface modules, for the user provides operation interface and shows the characteristic test result of electric power passive filter, can select test method, confirmed test parameter, show test findings by testing software, and the form with data form and figure such as filter characteristic can be shown, can generate test report, test parameter can be preserved and import.
As can be seen from the above embodiments, the utility model embodiment provides a kind of effective device for the characteristic test of electric power passive filter, can investigate electric power passive filter characteristic comprehensively, for putting into operation, the detection of electric power passive filter, adjustment and safety provides safeguard, for electric power passive filter fault diagnosis and maintenance provide foundation.Not only wiring is numerous and diverse to adopt traditional mode by contrast, and the instrument volume is big, and transportation is inconvenient, and measuring accuracy is low, and test point is few, poor stability.This electric-power filter characteristic test instrument apparatus, the measuring accuracy height, field wiring is simple, the testing efficiency height, the time is no more than 5 minutes, and testing efficiency is compared with traditional approach and has been improved more than at least 10 times.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (6)
1. device that is used for the characteristic test of electric power passive filter, it is characterized in that, comprise main control module, the signal excitation module, signal acquisition module and testing algorithm module, wherein said main control module drives described signal excitation module according to user's needs and generates corresponding test signal, then this test signal is exported to tested electric power passive filter, simultaneously described main control module drives described signal acquisition module and the current and voltage signals of tested electric power passive filter output is sampled and is handled by described testing algorithm module, obtains tested electric power passive filter characteristic.
2. device as claimed in claim 1 is characterized in that, described testing algorithm module according to the acquired signal of tested electric power passive filter electric current and voltage, is carried out analyzing and processing, calculates tested electric power passive filter characteristic.
3. device as claimed in claim 1 is characterized in that described main control module also comprises the testing software module, and described testing software module provides the operational administrative platform of filter characteristic test for the user.
4. device as claimed in claim 1, it is characterized in that, described main control module also comprises display module, load module and communication interface modules, described load module passes through communication interface modules, be used for the user and set various detecting informations, described display module is used to show described tested electric power passive filter characteristic.
5. device as claimed in claim 1, it is characterized in that, described signal excitation module comprises pumping signal generation module and pumping signal output module, described pumping signal generation module is used for setting formation voltage/current excitation signal according to the user under described master control module controls, described pumping signal output module is used for the voltage/current pumping signal that described pumping signal generation module generates is carried out filtering and power amplification, outputs to tested electric power passive filter then.
6. device as claimed in claim 1, it is characterized in that, described signal acquisition module comprises gain control module, the signal condition module, real-time acquisition module, described gain control module receives the gain control order of described main control module, be used for the adjustment that gains of signal to described real-time acquisition module output, described signal condition module is used for the output signal of described gain control module is carried out simulated modulation, described real-time acquisition module is used under described master control module controls the simulating signal of described signal condition module output being carried out high speed acquisition, obtains digital sampled signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201320979U CN201689137U (en) | 2010-03-12 | 2010-03-12 | Characteristic test device for electrical passive filter |
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| CN2010201320979U CN201689137U (en) | 2010-03-12 | 2010-03-12 | Characteristic test device for electrical passive filter |
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| CN201689137U true CN201689137U (en) | 2010-12-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401866A (en) * | 2011-12-13 | 2012-04-04 | 广东电网公司佛山供电局 | Detecting method of detuning fault element of triple-tuned DC filter |
| CN104730380A (en) * | 2015-02-26 | 2015-06-24 | 北京天诚同创电气有限公司 | Fault detection device, method and system for filter of generator set |
-
2010
- 2010-03-12 CN CN2010201320979U patent/CN201689137U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401866A (en) * | 2011-12-13 | 2012-04-04 | 广东电网公司佛山供电局 | Detecting method of detuning fault element of triple-tuned DC filter |
| CN102401866B (en) * | 2011-12-13 | 2014-04-09 | 广东电网公司佛山供电局 | Detecting method of detuning fault element of triple-tuned DC filter |
| CN104730380A (en) * | 2015-02-26 | 2015-06-24 | 北京天诚同创电气有限公司 | Fault detection device, method and system for filter of generator set |
| CN104730380B (en) * | 2015-02-26 | 2017-12-15 | 北京天诚同创电气有限公司 | Fault detection device, method and system for filter of generator set |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING PONOVO XINLI ELECTRIC CO., LTD. Free format text: FORMER NAME: BEIJING PONOVO XINLI POWER SYSTEM INSTRUMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee after: Beijing Ponovo Power Co., Ltd. Address before: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee before: Beijing Ponovo Power System Instrument Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |