CN201041942Y - Low-voltage passive intelligent tuning filtering device - Google Patents
Low-voltage passive intelligent tuning filtering device Download PDFInfo
- Publication number
- CN201041942Y CN201041942Y CNU2007201105148U CN200720110514U CN201041942Y CN 201041942 Y CN201041942 Y CN 201041942Y CN U2007201105148 U CNU2007201105148 U CN U2007201105148U CN 200720110514 U CN200720110514 U CN 200720110514U CN 201041942 Y CN201041942 Y CN 201041942Y
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- China
- Prior art keywords
- filtering
- filtering device
- contactor
- tuning filtering
- tuned
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a low-voltage passive intelligent tuned filtering device, and belongs to the technology field of a passive power filtering device. The utility model consists of a group of filtering circuit branches that include main filtering channels and are arranged in a case body. One end of the filtering circuit branch is connected with a busbar and the other end of the filtering circuit branch is connected with the ground. The utility model is characterized in that filtering channels of at least one filtering circuit branch are matched and provided with tuned filtering channels. An AC contactor KM1 and a current sampling instrument are connected and arranged on the filtering circuit branch. The tuned filtering controller connected with the current sampling instrument is connected with the AC contactor KM1 and the tuned filtering channel respectively. The low-voltage passive intelligent tuned filtering device has novel design and simple and reasonable structure and can detect the harmonic current real time through the intelligent tuned controller to regulate the harmonic frequency of the filtering circuit branch to protect the filtering device and the distribution transformer of users, thereby facilitating the filtering device to operate more effectively and economically.
Description
Technical field
The utility model belongs to passive electric filtering device technique field, is specifically related to a kind of low pressure passive intelligent tuning filtering device.
Background technology
Along with the development of power electronic technology, a large amount of power electronic equipments as computer switching power supply, electronic ballast fluorescent lamp, television set Switching Power Supply etc., have obtained using widely in the three-phase four-wire system distribution system.These power electronic equipments are in energy savings; also electric power system is caused very big harmonic pollution; generation power supply quality declines to a great extent, the grid power loss increases; cause the equipment for power transmission and distribution losts of life such as transformer and switch, cause other power consumption equipment cisco unity malfunctions, protection misoperation, apparatus overload, harmful effect such as overheated.
Passive filtration unit is to carry out the product that harmonic wave control and reactive power compensation are most widely used, but in actual moving process, also has a lot of problems to need to solve, and pours in down a chimney problem etc. as background harmonics.In China, occurred a lot of industrial colonies at present, promptly a lot of concentrations of enterprises of the same type are in the more approaching regional extent in an industrial park or geographical position, and such industrial pattern directly causes nonlinear load very concentrated, load variations is bigger, impacts comparatively serious to electrical network.It is unpractical that the enterprise that allows all produce harmonic wave carries out harmonic wave control simultaneously, can run into following problem and carry out the single-point harmonic wave control: when the passive filtration unit of a certain harmonic source enterprise put into operation, near the harmonic current that nonlinear load produced of enterprise was owing to the Low ESR of this passive filtration unit flows into; When the harmonic current that flows into surpassed the capacity of design, passive filtration unit will transship and generate heat, and may cause passive filtration unit to damage under the serious situation.If this passive filtration unit is installed in the low-pressure side of user's distribution transformer, then the background harmonics electric current can flow through user's distribution transformer, thereby causes user's distribution transformer loss increase, life-span to be reduced even damage.
As the patent No. is that 200420047262.5 utility model patent discloses a kind of passive intelligent filter, this device is by the comparison of real-time detected load current value, magnitude of voltage or reactive power value and set point, adopt the folding of intelligent controller control contactor, reach the effect of automatic switching L-C filter circuit.But this invention is not considered the harmonic wave in the actual moving process and is poured in down a chimney caused problem.The patent No. is that 02278946.4 utility model patent discloses a kind of harmonic synthesis restraining device, this device mainly solves existing single tuned filter and shunt active power filter still has very most of harmonic current to scurry into the problem of electric power system, solves and detect the harmonic current difficulty from the electric current of reality distortion, produces the offset current problem of difficulty more simultaneously.But the inner harmonic current situation of the main taking into account system of this device is not considered the influence of background harmonics in the actual motion, and this apparatus structure is too complicated in addition.
The utility model content
The utility model aims to provide a kind of technical scheme of low pressure passive intelligent tuning filtering device, and background harmonics pours in down a chimney the problem of being brought in the prior art to solve.
Described low pressure passive intelligent tuning filtering device, comprise the one group of filter branch that comprises main filtering channel that is arranged in the casing, one end of filter branch is connected with bus, other end ground connection, it is characterized in that being equipped with the tuning filtering passage on the main filtering channel of at least one filter branch, connect on the filter branch A.C. contactor KM is set
1And current sampler, be connected with current sampler the tuning filtering controller that is provided with respectively with A.C. contactor KM
1, tuning filtering passage control connection.
Described low pressure passive intelligent tuning filtering device is characterized in that main filtering channel is by capacitor C
1, the reactor L formation of connecting, the tuning filtering passage is by capacitor C
2With A.C. contactor KM
2Be connected in the capacitor C of main filtering channel after the series connection in parallel
1Two ends, A.C. contactor KM
2With tuning filtering controller control connection.
Described low pressure passive intelligent tuning filtering device is characterized in that described current sampler is a current transformer.
Described low pressure passive intelligent tuning filtering device is characterized in that A.C. contactor KM
1Be connected with bus by fast acting fuse.
Described low pressure passive intelligent tuning filtering device is characterized in that described tuning filtering controller is an AEE series intelligent tuning filter controller.
Above-mentioned low pressure passive intelligent tuning filtering device design is novel, simple and reasonable; can detect the resonance frequency that harmonic current is adjusted filter branch in real time by the intelligent tuning controller; flow into system to reduce the background harmonics electric current; when reaching protection, harmonic current can excise this time and high order filter branch more during set point; with protection filter and user's distribution transformer, make the filter can more effective, operation economically.
Description of drawings
Fig. 1 is the utility model circuit principle structure schematic diagram.
Embodiment
Below in conjunction with Figure of description the utility model is further specified:
Low pressure passive intelligent tuning filtering device comprises the one group of filter branch that comprises main filtering channel 4 that is arranged in the casing, and main filtering channel 4 is by capacitor C
15, reactor L6 series connection constitutes, and an end of filter branch is connected with bus 11, other end ground connection.Be equipped with tuning filtering passage 7 on the main filtering channel 4 of at least one filter branch in the set filter branch, tuning filtering passage 7 is by capacitor C
28 and A.C. contactor KM
2Be connected in the capacitor C of main filtering channel 4 after 9 series connection in parallel
15 two ends.Connect on the filter branch A.C. contactor KM is set
13 and current sampler 2, A.C. contactor KM
13 pass through fast acting fuse 1 is connected with bus 11, and current sampler 2 is a current transformer.Be connected with current sampler 2 the tuning filtering controller 10 that is provided with respectively with A.C. contactor KM
13, the A.C. contactor KM in the tuning filtering passage 7
29 control connections are carried out switching control to filter branch and tuning filtering passage 7 respectively, and tuning filtering controller 10 is an AEE series intelligent tuning filter controller, and all the filter branch switchings in 10 pairs of devices of tuning filtering controller are controlled.
Work control procedure of the present utility model is: tuning filtering controller 10 is according to the reactive power or the Current Control A.C. contactor KM of system
13 drop into the promptly main filtering channel 4 of filter branches, and the harmonic current of real-time detection filter device branch road, when harmonic current surpasses the rated value of design in continuous a period of time, and tuning filtering controller 10 closed A.C. contactor KM
29, drop into capacitor G
28, make the resonance frequency of this filter depart from, if the background harmonics electric current does not increase, because filter branches is to the impedance increase of this subharmonic, this subharmonic current that flows through filter branches will reduce, thus protecting filter branch road and user's distribution transformer nonoverload; If background harmonics continues to increase, the harmonic current that then flows through filter branches may continue to increase, and when harmonic current arrived certain limiting threshold value greatly, tuning filtering controller 10 can disconnect A.C. contactor KM
13, thus protecting filter branch road and user's distribution transformer are not burnt.
Claims (5)
1. low pressure passive intelligent tuning filtering device, comprise the one group of filter branch that comprises main filtering channel (4) that is arranged in the casing, one end of filter branch is connected with bus (11), other end ground connection, it is characterized in that being equipped with tuning filtering passage (7) on the main filtering channel (4) of at least one filter branch, connect on the filter branch A.C. contactor KM is set
1(3) and current sampler (2), be connected with current sampler (2) the tuning filtering controller (10) that is provided with respectively with A.C. contactor KM
1(3), tuning filtering passage (7) control connection.
2. low pressure passive intelligent tuning filtering device as claimed in claim 1 is characterized in that main filtering channel (4) is by capacitor C
1(5), reactor L (6) formation of connecting, tuning filtering passage (7) is by capacitor C
2(8) and A.C. contactor KM
2(9) be connected in the capacitor C of main filtering channel (4) after the series connection in parallel
1(5) two ends, A.C. contactor KM
2(9) with tuning filtering controller (10) control connection.
3. low pressure passive intelligent tuning filtering device as claimed in claim 1 is characterized in that described current sampler (2) is a current transformer.
4. low pressure passive intelligent tuning filtering device as claimed in claim 1 is characterized in that A.C. contactor KM
1(3) be connected with bus (11) by fast acting fuse (1).
5. low pressure passive intelligent tuning filtering device as claimed in claim 1 is characterized in that described tuning filtering controller (10) is AEE series intelligent tuning filter controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201105148U CN201041942Y (en) | 2007-06-08 | 2007-06-08 | Low-voltage passive intelligent tuning filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201105148U CN201041942Y (en) | 2007-06-08 | 2007-06-08 | Low-voltage passive intelligent tuning filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041942Y true CN201041942Y (en) | 2008-03-26 |
Family
ID=39253654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201105148U Expired - Lifetime CN201041942Y (en) | 2007-06-08 | 2007-06-08 | Low-voltage passive intelligent tuning filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041942Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995528A (en) * | 2010-09-29 | 2011-03-30 | 上海海事大学 | Compound power filter test device and method |
| CN102270846A (en) * | 2011-08-22 | 2011-12-07 | 珠海市汇通电气有限公司 | High power factor treatment device for user harmonic |
| CN104604072A (en) * | 2012-06-01 | 2015-05-06 | Abb技术有限公司 | A filter apparatus, a method for filtering harmonics in an electrical power transmission or distribution system, and such a system |
| CN104934980A (en) * | 2015-07-13 | 2015-09-23 | 江苏现代电力科技股份有限公司 | Self-tuning low voltage passive filtering compensation device |
-
2007
- 2007-06-08 CN CNU2007201105148U patent/CN201041942Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995528A (en) * | 2010-09-29 | 2011-03-30 | 上海海事大学 | Compound power filter test device and method |
| CN102270846A (en) * | 2011-08-22 | 2011-12-07 | 珠海市汇通电气有限公司 | High power factor treatment device for user harmonic |
| CN104604072A (en) * | 2012-06-01 | 2015-05-06 | Abb技术有限公司 | A filter apparatus, a method for filtering harmonics in an electrical power transmission or distribution system, and such a system |
| CN104934980A (en) * | 2015-07-13 | 2015-09-23 | 江苏现代电力科技股份有限公司 | Self-tuning low voltage passive filtering compensation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG XIEPING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LIANG YIQIAO Effective date: 20110616 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325000 NO. 202, BUILDING 16, KANGYUAN, HUANGLONG RESIDENTIAL QUARTER, LUCHENG DISTRICT, WENZHOU CITY, ZHEJIANG PROVINCE TO: 310030 NO. 210, ZHENHUA ROAD, XIHU SCIENCE AND TECHNOLOGY PARK, SANDUN, XIHU DISTRICT, HANGZHOU CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110616 Address after: 310030, Zhenhua Road, three pier West Lake Science Park, Hangzhou, Zhejiang, Xihu District 210, China Patentee after: Zhejiang Xieping Technology Co., Ltd. Address before: 325000, No. 16, 202, Kang Yuan Garden, Huanglong residential area, Lucheng District, Wenzhou, Zhejiang Patentee before: Liang Yiqiao |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG GUIRONG XIEPING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHEJIANG XIEPING TECHNOLOGY CO., LTD. Effective date: 20110920 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110920 Address after: 2 Building 2, 210 Zhenhua Road, 310030, Zhejiang, Hangzhou, Xihu District Patentee after: ZHEJIANG GUIRONG XIEPING TECHNOLOGY CO., LTD. Address before: 310030, Zhenhua Road, three pier West Lake Science Park, Hangzhou, Zhejiang, Xihu District 210, China Patentee before: Zhejiang Xieping Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080326 |
|
| CX01 | Expiry of patent term |