CN102623998A - Active power filtering device - Google Patents
Active power filtering device Download PDFInfo
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- CN102623998A CN102623998A CN2012100911797A CN201210091179A CN102623998A CN 102623998 A CN102623998 A CN 102623998A CN 2012100911797 A CN2012100911797 A CN 2012100911797A CN 201210091179 A CN201210091179 A CN 201210091179A CN 102623998 A CN102623998 A CN 102623998A
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- filter device
- active electric
- electric filter
- reactance
- active power
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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
- Y02E40/20—Active power filtering [APF]
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Abstract
The invention relates to an active power filtering device. The active power filtering device comprises a master active power filtering device and a plurality of slave active power filtering devices, wherein the master active power filtering device and the slave active power filtering devices are respectively connected with an electric network, and the master active power filtering device is connected with the slave active power filtering devices through optical fibers. The active power filtering device is an active power filtering device based on a master-slave active power filter structure and comprises the master active power filtering device and the slave active power filtering devices; and active power filtering devices with different capacities can be flexibly configured according to the combination of different numbers of slave active power filtering devices, so that the field capacity expansion can be more convenient.
Description
Technical field
The present invention relates to a kind of active electric filter device.
Background technology
Along with the fast development that modernized factory produces, electric load sharply increases, and load capacities such as the various RHVCs in the electrical network, rectifier constantly increase.A large amount of power electronic power devices and device are in the extensive use of electrical network; When bringing energy-conservation and power conversion, cause serious pollution also for the supply network quality of power supply, a large amount of harmonic waves and reactive current injection electric power system to plant produced; Cause the system effectiveness step-down; The power factor variation, and to other equipment and device generation disturbance, the quality of power supply of serious threat electrical network and the safe operation of power equipment; Therefore electric energy quality test is an important content of electric power netting safe running evaluation and research, and harmonic problem is distinct issues.
Administer the normal mode that adds the filter filtering that adopts of harmonic wave, except that passive filter, also obtain increasing approval and application based on the active filter of dynamic compensation.The existing power active filter basically all is the form of single cabinet, installs to be single cabinet, in application, usually can run into: when adopting two or more active filter parallel connections with dilatation, have the problem that is difficult to united and coordinating control between each device.
Therefore, how to realize that the coordinated operation that is together in parallel of a plurality of active filters is one of those skilled in the art's direction of being devoted to study.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and a kind of active electric filter device based on modular organization be provided,
The objective of the invention is to realize like this:
A kind of active electric filter device of the present invention; Comprise that main active electric filter device and several are from active electric filter device; Wherein: described main active electric filter device be connected with electrical network respectively from active electric filter device, described main active electric filter device is connected from active electric filter device with described through optical fiber.
Above-mentioned a kind of active electric filter device, wherein, described main active electric filter device and describedly include power cell and from control unit, described main active electric filter device also comprises master controller from active electric filter device.
Above-mentioned a kind of active electric filter device, wherein, described power cell comprises contactor, current-limiting resistance, connection reactance, filter reactance, filter, IGBT current transformer and two dc capacitors, wherein:
Described contactor, filter reactance, connection reactance and IGBT current transformer are connected successively, and the other end of described contactor connects electrical network;
Described current-limiting resistance is parallel to the two ends of contactor;
The input of described filter is connected to filter reactance and connects between the reactance;
The dc capacitor of described two series connection is connected to two outputs of IGBT current transformer, and the phase contact of these two dc capacitors is as dc output end.
Above-mentioned a kind of active electric filter device wherein, describedly comprises drive plate, power supply and sub-control board from control section, wherein:
Described sub-control board is connected with the power supply power supply, and links to each other with described drive plate;
Described drive plate links to each other with the driving signal input of described IGBT current transformer.
Above-mentioned a kind of active electric filter device, wherein, described master controller comprises master board and the power supply that is attached thereto, man-machine interface and optical fiber keyset, wherein:
Described optical fiber keyset through optical fiber respectively with described linking to each other from active electric filter device from control unit;
Described master board links to each other with the sub-control board of described main active electric filter device through optical fiber.
The present invention is a kind of active electric filter device based on principal and subordinate's active filter structure; Comprise that a main active electric filter device and several are from active electric filter device; Combination according to different numbers from active electric filter device; But the active electric filter device of flexible configuration different capabilities, thereby make that on-the-spot dilatation is more convenient.
Description of drawings
Fig. 1 is a principle schematic of the present invention;
Fig. 2 is the principle schematic of main active electric filter device among the present invention;
Fig. 3 is from the principle schematic of active electric filter device among the present invention.
Embodiment
To combine accompanying drawing that the present invention is described further below.
See also Fig. 1; Active electric filter device of the present invention has been shown among the figure; It comprises main active electric filter device 1 and several are from active electric filter device 2; Wherein: main active electric filter device 1 be connected with electrical network respectively from active electric filter device 2, main active electric filter device 1 is through optical fiber and be connected from active electric filter device 2.
See also Fig. 2, the main active electric filter device among the present invention has been shown among the figure, this main active electric filter device 1 comprises power cell 3, from control unit 4 and master controller 5, wherein:
Current-limiting resistance 32 is connected to the two ends of contactor 31;
The input of filter 34 is connected to filter reactance 33 and connects between the reactance 35;
Be connected in series two outputs that the branch road that forms is parallel to IGBT current transformer 39 by first dc capacitor 37 and second dc capacitor 38, and the contact mutually of first dc capacitor 37 and second dc capacitor 38 is as dc output end.
Optical fiber keyset 52 through optical fiber respectively with linking to each other from active electric filter device 2 from control unit 4;
See also Fig. 3, illustrated among the figure among the present invention from active electric filter device, should comprise power cell 3 and from control unit 4, wherein from active electric filter device 2:
Current-limiting resistance 32 is connected to the two ends of contactor 31;
The input of filter 34 is connected to filter reactance 33 and connects between the reactance 35;
Be connected in series two outputs that the branch road that forms is parallel to IGBT current transformer 39 by first dc capacitor 37 and second dc capacitor 38, and the contact mutually of first dc capacitor 37 and second dc capacitor 38 is as dc output end.
The compensating parameter that the master board 51 that sub-control board 41 among the present invention receives master controller 5 issues; Generate corresponding pwm signal; It is passed to drive plate 42; Thereby drive IGBT current transformer 39 by drive plate 42 and produce actual offset current, simultaneously, master board 51 is through 52 pairs of compensating parameters that issue from active electric filter device 2 of optical fiber keyset; And then control drives IGBT current transformer 39 and produces actual offset current from the corresponding pwm signal of sub-control board 41 generations of active electric filter device 2.
The present invention is a kind of active electric filter device based on principal and subordinate's active filter structure; Comprise that a main active electric filter device and several are from active electric filter device; Combination according to different numbers from active electric filter device; But the active electric filter device of flexible configuration different capabilities, thereby make that on-the-spot dilatation is more convenient.
Above embodiment only supplies to explain the present invention's usefulness; But not limitation of the present invention; The technical staff in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited each claim.
Claims (5)
1. active electric filter device; It is characterized in that; It comprises that main active electric filter device and several are from active electric filter device; Wherein: described main active electric filter device be connected with electrical network respectively from active electric filter device, described main active electric filter device is connected from active electric filter device with described through optical fiber.
2. a kind of active electric filter device as claimed in claim 1; It is characterized in that; Described main active electric filter device and describedly include power cell and from control unit, described main active electric filter device also comprises master controller from active electric filter device.
3. a kind of active electric filter device as claimed in claim 2 is characterized in that, described power cell comprises contactor, current-limiting resistance, connection reactance, filter reactance, filter, IGBT current transformer and two dc capacitors, wherein:
Described contactor, filter reactance, connection reactance and IGBT current transformer are connected successively, and the other end of described contactor connects electrical network;
Described current-limiting resistance is parallel to the two ends of contactor;
The input of described filter is connected to filter reactance and connects between the reactance;
The dc capacitor of described two series connection is connected to two outputs of IGBT current transformer, and the phase contact of these two dc capacitors is as dc output end.
4. a kind of active electric filter device as claimed in claim 2 is characterized in that, describedly comprises drive plate, power supply and sub-control board from control section, wherein:
Described sub-control board is connected with the power supply power supply, and links to each other with described drive plate;
Described drive plate links to each other with the driving signal input of described IGBT current transformer.
5. a kind of active electric filter device as claimed in claim 2 is characterized in that, described master controller comprises master board and the power supply that is attached thereto, man-machine interface and optical fiber keyset, wherein:
Described optical fiber keyset through optical fiber respectively with described linking to each other from active electric filter device from control unit;
Described master board links to each other with the sub-control board of described main active electric filter device through optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100911797A CN102623998A (en) | 2012-03-30 | 2012-03-30 | Active power filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100911797A CN102623998A (en) | 2012-03-30 | 2012-03-30 | Active power filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102623998A true CN102623998A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100911797A Pending CN102623998A (en) | 2012-03-30 | 2012-03-30 | Active power filtering device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064323A (en) * | 2012-12-13 | 2013-04-24 | 广西星宇智能电气有限公司 | Parallel control method used for active power filter |
| CN104953586A (en) * | 2014-03-24 | 2015-09-30 | 利思电气（上海）有限公司 | Master-slave active filter device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0565701B1 (en) * | 1991-11-04 | 1996-12-18 | Asea Brown Boveri Ab | Reduction of disturbances in a power network |
| CN2891438Y (en) * | 2005-10-10 | 2007-04-18 | 浙江容大电力设备制造有限公司 | Active power filter |
| CN202395447U (en) * | 2011-11-25 | 2012-08-22 | 杭州晨星电力科技有限公司 | Master-slave active filtering system |
| CN202564947U (en) * | 2012-03-30 | 2012-11-28 | 上海市电力公司 | Active electric power filtering device |
-
2012
- 2012-03-30 CN CN2012100911797A patent/CN102623998A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0565701B1 (en) * | 1991-11-04 | 1996-12-18 | Asea Brown Boveri Ab | Reduction of disturbances in a power network |
| CN2891438Y (en) * | 2005-10-10 | 2007-04-18 | 浙江容大电力设备制造有限公司 | Active power filter |
| CN202395447U (en) * | 2011-11-25 | 2012-08-22 | 杭州晨星电力科技有限公司 | Master-slave active filtering system |
| CN202564947U (en) * | 2012-03-30 | 2012-11-28 | 上海市电力公司 | Active electric power filtering device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064323A (en) * | 2012-12-13 | 2013-04-24 | 广西星宇智能电气有限公司 | Parallel control method used for active power filter |
| CN104953586A (en) * | 2014-03-24 | 2015-09-30 | 利思电气（上海）有限公司 | Master-slave active filter device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20121012 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121012 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant before: Shanghai Electric Power Corporation |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |