CN101867188A - Modularized three-phase four-wire active power filter - Google Patents
Modularized three-phase four-wire active power filter Download PDFInfo
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- CN101867188A CN101867188A CN201010213549A CN201010213549A CN101867188A CN 101867188 A CN101867188 A CN 101867188A CN 201010213549 A CN201010213549 A CN 201010213549A CN 201010213549 A CN201010213549 A CN 201010213549A CN 101867188 A CN101867188 A CN 101867188A
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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]
Abstract
The invention relates to a modularized three-phase four-wire active power filter. The active power filter adopts profiles to set up the frame structure of the complete machine or adopts standard distribution cabinet type. The active power filter is provided with the following five main functional modules based on functions: a circuit breaker module, a filter module, a converter module, a reactor module and a harmonic analyzer module. Different modules achieve the aims of electrical connection and data communication through corresponding hardware interfaces. The modules are respectively installed in boxes formed by the profiles according to function difference. The functions of the modules are relatively independent. Each module can be singly changed, thus being convenient for upgrading and capacity expansion of the functions and breakdown maintenance and improving the practicability and flexibility of the active power filter. The active power filter has strong anti-jamming capability and high filtering performance index, is stable and reliable and is convenient and simple in installation and wiring.
Description
Technical field
The present invention relates to a kind of electric-power filter, particularly a kind of modularized three-phase four-wire active power filter.
Background technology
At present; in three-phase four-wire active power filter commonly used; common mounting structure only directly is positioned over inner components and parts casing or cabinet inside; like this when three-phase four-wire active power filter need be upgraded expansion or breakdown maintenance; need detect and change whole box body or cabinet; be unfavorable for upgrading expansion and breakdown maintenance; and main circuit is not effectively limited the interference of control circuit; this will influence the performance index and the job stability of Active Power Filter-APF; in case break down, must shut down maintenance.Maintenance back machine must be up to the standards and could use by machine debugging.The check debugging more complicated of three-phase four-wire active filter be difficult at the scene carry out, and common structure all is a whole machine installation at present that volume is big, Heavy Weight, depot repair difficulty.Three-phase four-wire active power filter self is a harmonic source simultaneously, also is a strong interferers.
Therefore, the structural module of three-phase four-wire active power filter is very necessary, provide a kind of simple in structure, reasonable in design, use modularized three-phase four-wire active power filter easy, high performance index, be one of these those skilled in the art problem that should address.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, provide a kind of simple in structure, reasonable in design, antijamming capability is strong, the modularized three-phase four-wire active power filter of convenient and simple to install wiring, high performance index.
The technical solution adopted in the present invention is for achieving the above object: a kind of modularized three-phase four-wire active power filter is characterized in that: the frame structure that this has three-phase and four-line source electric-power filter to adopt section bar to build complete machine, or adopt standard distributed cabinet type; The three-phase four-wire active power system is provided with five main functional modules by function, i.e. breaker module, filter module, converter module, reactor module, harmonic analyzer module; Described converter module is by load current sensor sampling electrical network load current, analysis meter is calculated actual harmonic current on the electrical network, and the offset current by one of power controlling device output and actual harmonic current opposite sign but equal magnitude is to reactor module then; By outputing to filter module after the reactor module filtering, pass through the filter module filtered again after, output to electrical network by breaker module, the harmonic current that produces with nonlinear load on the electrical network offsets, and reaches the purpose of harmonic wave on the filtering electrical network; Correspondence is provided with hardware interface between the different modules; Be electrically connected and data communication by terminal interface, line between the different modules; Described filter module terminal LB1 links to each other with network neutral line N by breaker module; L1 is continuous mutually with electrical network A by breaker module for filter module terminal LB2; L2 is continuous mutually with electrical network B by breaker module for filter module terminal LB3; L3 is continuous mutually with electrical network C by breaker module for filter module terminal LB4; Filter module terminal LB5 links to each other with converter module terminal AF1; Filter module terminal LB6 links to each other with reactor module terminal LK1; Filter module terminal LB7 links to each other with reactor module terminal LK3; Filter module terminal LB8 links to each other with reactor module terminal LK5; Reactor module terminal LK2 links to each other with the terminal AF2 of current transformer; Reactor module terminal LK4 links to each other with current transformer terminal AF3; Reactor module terminal LK6 links to each other with current transformer terminal AF4; Current transformer terminal AF5 links to each other with load sample rate current transducer; Current transformer terminal AF6 links to each other with the terminal XB1 of harmonic analyzer module.
The invention has the beneficial effects as follows: each functions of modules of the present invention is relatively independent, and each piece all can be changed separately; Its structuring is simple, and is reasonable in design, practical, conveniently carries out the upgrading expansion and the breakdown maintenance of function, increases the practicality and the flexibility of three-phase four-wire active power filter, and its filtering performance index is high and reliable and stable, low cost of manufacture, and the installation wiring is simple.Three-phase four-wire active power filter self is a harmonic source, also is a strong interferers; Because the shell of each module of the present invention all adopts iron-clad, and the grounding measures that each module is good is strengthened self antijamming capability greatly, has stopped interfering with each other between each device, major loop is to the interference of control loop, and Active Power Filter-APF is to the interference of miscellaneous equipment.The present invention is stable and reliable for performance, has wide range of applications, and can also solve the filtering problem of big capacity nonlinear load, is applicable to the requirement of various occasions.
Description of drawings
Fig. 1 is the installation wiring schematic diagram between each module of the present invention;
Among the figure:
The 1-breaker module;
The 2-filter module;
The 3-converter module;
The 4-reactor module;
5-harmonic analyzer module;
LH1-A phase load current sample transducer;
LH2-B phase load current sample transducer;
LH3-C phase load current sample transducer;
Filter terminal LB1: neutral harmonic compensation harmonic current output terminal behind filter filtering;
Filter terminal LB2: the A phase harmonic compensation harmonic current lead-out terminal behind filter filtering;
Filter terminal LB3: the B phase harmonic compensation harmonic current lead-out terminal behind filter filtering;
Filter terminal LB4: the C phase harmonic compensation harmonic current lead-out terminal behind filter filtering;
Filter terminal LB5: neutral harmonic compensation harmonic current input terminal behind filter filtering;
Filter terminal LB6: the A phase harmonic compensation harmonic current input terminal before filter filtering;
Filter terminal LB7: the B phase harmonic compensation harmonic current input terminal before filter filtering;
Filter terminal LB8: the C phase harmonic compensation harmonic current input terminal before filter filtering;
Reactor terminal LK1: through the filtered A phase of reactor harmonic compensation harmonic current lead-out terminal;
Reactor terminal LK3: through the filtered B phase of reactor harmonic compensation harmonic current lead-out terminal;
Reactor terminal LK5: through the filtered C phase of reactor harmonic compensation harmonic current lead-out terminal;
Reactor terminal LK2: the A phase harmonic compensation harmonic current input terminal before reactor filtering;
Reactor terminal LK4: the B phase harmonic compensation harmonic current input terminal before reactor filtering;
Reactor terminal LK6: the C phase harmonic compensation harmonic current input terminal before reactor filtering;
Current transformer terminal AF1: neutral harmonic compensation harmonic current output terminal;
Current transformer terminal AF2:A phase harmonic compensation harmonic current lead-out terminal;
Current transformer terminal AF3:B phase harmonic compensation harmonic current lead-out terminal;
Current transformer terminal AF4:C phase harmonic compensation harmonic current lead-out terminal;
Current transformer terminal AF5: load current sampling sensor interface;
Current transformer terminal AF6: with the harmonic analyzer communication interface;
Harmonic analyzer terminal XB1: with the current transformer communication interface.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to the novel embodiment that provides of this use, structure, details are as follows for feature:
Referring to Fig. 1, a kind of modularized three-phase four-wire active power filter is characterized in that: the frame structure of this three-phase four-wire active power filter adopts section bar to build, and also can use standard distributed cabinet type; Each module is installed in the casing that constitutes with section bar separately by the function difference; Each module is installed and wiring according to Fig. 1 version.Described each module comprises: breaker module 1, filter module 2, converter module 3, reactor module 4, harmonic analyzer module 5; Converter module is by load current sensor sampling electrical network load current, and analysis meter is calculated actual harmonic current on the electrical network routinely, offset current by actual harmonic current opposite sign but equal magnitude on one of power controlling device output and the electrical network is to reactor module then, by outputing to filter module after the reactor module filtering, after passing through the filter module filtered again, output to electrical network by breaker module, the harmonic current that produces with nonlinear load on the electrical network offsets, and reaches the purpose of harmonic wave control.And terminal interface, the line by as shown in Figure 1 reaches the purpose that is electrically connected with data communication between the different modules.Filter module terminal LB1 links to each other with network neutral line N by breaker module; L1 is continuous mutually with electrical network A by breaker module for filter module terminal LB2; L2 is continuous mutually with electrical network B by breaker module for filter module terminal LB3; L3 is continuous mutually with electrical network C by breaker module for filter module terminal LB4; Filter module terminal LB5 links to each other with converter module terminal AF1; Filter module terminal LB6 links to each other with reactor module terminal LK1; Filter module terminal LB7 links to each other with reactor module terminal LK3; Filter module terminal LB8 links to each other with reactor module terminal LK5; Reactor module terminal LK2 links to each other with the terminal AF2 of current transformer; Reactor module terminal LK4 links to each other with current transformer terminal AF3; Reactor module terminal LK6 links to each other with current transformer terminal AF4; Current transformer terminal AF5 links to each other with load sample rate current transducer; Current transformer terminal AF6 links to each other with the terminal XB1 of harmonic analyzer module.
Operation principle is as follows:
Nucleus module in the three-phase four-wire active power filter module is a converter module.Converter module 3 is sampled to A, B, C three phase network load current respectively by load sample rate current transducer LH1, LH2, LH3, the sampling load current is outputed to the XB1 port of harmonic analyzer 5 by the AF6 port of converter module 3, harmonic analyzer is analyzed the harmonic wave of electrical network, and by man-machine interface parameters such as the size of the number of times that contains harmonic wave in the electrical network, harmonic current, waveform is shown.The load current of 3 pairs of samplings of converter module is analyzed simultaneously, calculate contained harmonic current in electrical network A, B, the C three-phase, the size of harmonic current in the electrical network that comes out according to analytical calculation then, oppositely the back outputs on LK1, LK3, the LK5 terminal of reactor module 4 by terminal AF2, AF3, the AF4 of converter module 3.Again by reactor module 4 filtering, make the offset current waveform of converter module 3 outputs continuous, level and smooth back is by the LK2 of reactor module 4, LK4, the LK6 terminal outputs to the LB6 of filter module 2, LB7, the LB8 terminal, converter module 3 is exported neutral line offset current to the LB5 terminal of filter module by the AF1 terminal simultaneously, after filter module 2 carries out filtering (high-frequency harmonic that power device produces in the main filtering converter module 3) to offset current once more, LB2 by filter module 2, LB3, LB4 end output compensation harmonic electric current, output on the electrical network by circuit breaker 1 then, the harmonic current that produces with nonlinear load on the electrical network offsets, and reaches the purpose of harmonic wave control.
In the enforcement, the shell of each module all adopts iron-clad, and the shell of each module has independent good grounding measures, and self antijamming capability is strengthened greatly, has also effectively weakened the interference for other device in the circuit simultaneously.
Above-mentioned with reference to specific embodiment to the detailed description that this modularized three-phase four-wire active power filter carries out, be illustrative rather than determinate, therefore, should belong within protection scope of the present invention in the variation and the modification that do not break away under the general plotting of the present invention.
Claims (1)
1. a modularized three-phase four-wire active power filter is characterized in that: the frame structure that this three-phase four-wire active power filter adopts section bar to build complete machine, or employing standard distributed cabinet type; Three-phase four-wire active power filter is provided with five functional modules, i.e. breaker module, filter module, converter module, reactor module, harmonic analyzer module; Described converter module is by load current sensor sampling electrical network load current, analysis meter is calculated actual harmonic current on the electrical network, and the offset current by actual harmonic current opposite sign but equal magnitude on one of the power device output of control in the current transformer and the electrical network is to reactor module then; By outputing to filter module after the reactor module filtering, pass through the filter module filtered again after, output to electrical network by breaker module, the harmonic current that produces with nonlinear load on the electrical network offsets, and reaches the purpose of harmonic wave on the filtering electrical network; Be electrically connected and data communication by terminal interface, line between the different modules; Described filter module terminal LB1 links to each other with network neutral line N by breaker module; L1 is continuous mutually with electrical network A by breaker module for filter module terminal LB2; L2 is continuous mutually with electrical network B by breaker module for filter module terminal LB3; L3 is continuous mutually with electrical network C by breaker module for filter module terminal LB4; Filter module terminal LB5 links to each other with converter module terminal AF1; Filter module terminal LB6 links to each other with reactor module terminal LK1; Filter module terminal LB7 links to each other with reactor module terminal LK3; Filter module terminal LB8 links to each other with reactor module terminal LK5; Reactor module terminal LK2 links to each other with the terminal AF2 of current transformer; Reactor module terminal LK4 links to each other with current transformer terminal AF3; Reactor module terminal LK6 links to each other with current transformer terminal AF4; Current transformer terminal AF5 links to each other with load sample rate current transducer; Current transformer terminal AF6 links to each other with the terminal XB1 of harmonic analyzer module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010213549A CN101867188A (en) | 2010-06-30 | 2010-06-30 | Modularized three-phase four-wire active power filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010213549A CN101867188A (en) | 2010-06-30 | 2010-06-30 | Modularized three-phase four-wire active power filter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5780939A (en) * | 1992-12-10 | 1998-07-14 | Siemens Aktiengesellschaft | Method and apparatus for determining orders of non-characteristic harmonic currents, and for compensation of the noncharacteristic harmonic currents |
| CN101291064A (en) * | 2007-04-20 | 2008-10-22 | 上海输配电股份有限公司 | Low-voltage active electric power filter adopting 3 single-phase H bridge type |
| US20100045109A1 (en) * | 2004-09-20 | 2010-02-25 | Ullrich Joseph Arnold | AC Power Distribution System with Transient Suppression and Harmonic Attenuation |
| CN201435610Y (en) * | 2009-07-09 | 2010-03-31 | 上海艾帕电力电子有限公司 | Device for controlling power quality comprehensively |
| CN201726133U (en) * | 2010-06-30 | 2011-01-26 | 天津诺尔哈顿电器制造有限公司 | Modular three-phase four-wire active power filter |
-
2010
- 2010-06-30 CN CN201010213549A patent/CN101867188A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5780939A (en) * | 1992-12-10 | 1998-07-14 | Siemens Aktiengesellschaft | Method and apparatus for determining orders of non-characteristic harmonic currents, and for compensation of the noncharacteristic harmonic currents |
| US20100045109A1 (en) * | 2004-09-20 | 2010-02-25 | Ullrich Joseph Arnold | AC Power Distribution System with Transient Suppression and Harmonic Attenuation |
| CN101291064A (en) * | 2007-04-20 | 2008-10-22 | 上海输配电股份有限公司 | Low-voltage active electric power filter adopting 3 single-phase H bridge type |
| CN201435610Y (en) * | 2009-07-09 | 2010-03-31 | 上海艾帕电力电子有限公司 | Device for controlling power quality comprehensively |
| CN201726133U (en) * | 2010-06-30 | 2011-01-26 | 天津诺尔哈顿电器制造有限公司 | Modular three-phase four-wire active power filter |
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Application publication date: 20101020 |