CN204316095U - Low pressure mixes active dynamic reactive compensation device - Google Patents
Low pressure mixes active dynamic reactive compensation device Download PDFInfo
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- CN204316095U CN204316095U CN201420738921.3U CN201420738921U CN204316095U CN 204316095 U CN204316095 U CN 204316095U CN 201420738921 U CN201420738921 U CN 201420738921U CN 204316095 U CN204316095 U CN 204316095U
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model relates to a kind of low pressure and mixes active dynamic reactive compensation device, includes: controller; SVG module, this SVG module communication is connected to this controller, can carry out the sampling of DC current signal, is electrically connected to the bus of three-phase low-voltage and XA ~ XC terminal of SVG module is connected respectively successively after the second circuit breaker, current transformer and the first circuit breaker; First filter circuit, its L1 ~ L3 terminal is electrically connected to each described current transformer respectively, its K+ port is electrically connected on the COM end of described controller, K-end is connected to the corresponding port of described controller, and the C1-C3 of described first filter circuit end is electrically connected with a three-phase capacitor C1 with delta connection; Second filter circuit, its L1 ~ L3 terminal is electrically connected to each described current transformer respectively, its K+ port is electrically connected on the COM end of described controller, KA ~ KC is connected to other corresponding port of described controller, and the C1-C3 end of described second filter circuit is electrically connected with a phase splitting compensation capacitor C2 with Y type connection method.
Description
Technical field
The utility model belongs to low-voltage equipment field, particularly relates to a kind of low pressure and mixes active dynamic reactive compensation device.
Background technology
At present, traditional compensating circuit is thyristor switchable capacitor TSC, therefore easily there is the phenomenon of mending or owing to mend, particularly when load idle is uprushed or anticlimax time, existing compensation way often has little time to excise the capacitor dropped into, its reactive power compensation can not continuously adjustabe, and can only export capacity current.
Along with the pay attention to day by day that China administers harmonic pollution in electric power net, the cry of development environment-friendly and green electric power is also more and more higher, active power filter is also used widely, and the utility model proposes for the problems referred to above of three line voltages existence of actual conditions mesolow distribution end.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of low pressure to mix active dynamic reactive compensation device, SVG module responds real-time, it reaches the effect of dynamic Continuous Compensation to the continuous output of reactive power, to crossing the reactive power compensation to 0.99 of mending or owing to mend.
The technical solution of the utility model is as follows:
A kind of low pressure mixes active dynamic reactive compensation device, includes:
Controller, has touch-screen, and can displaying data in real-time;
SVG module, this SVG module communication is connected to this controller, can carry out the sampling of DC current signal, is electrically connected to the bus of three-phase low-voltage and XA ~ XC terminal of SVG module is connected respectively successively after the second circuit breaker, current transformer and the first circuit breaker;
First filter circuit, its L1 ~ L3 terminal is electrically connected to each described current transformer respectively, its K+ port is electrically connected on the COM end of described controller, K-end is connected to the corresponding port of described controller, and the C1-C3 of described first filter circuit end is electrically connected with a three-phase capacitor C1 with delta connection;
Second filter circuit, its L1 ~ L3 terminal is electrically connected to each described current transformer respectively, its K+ port is electrically connected on the COM end of described controller, KA ~ KC is connected to other corresponding port of described controller, and the C1-C3 end of described second filter circuit is electrically connected with a phase splitting compensation capacitor C2 with Y type connection method.
Above-mentioned low pressure mixes active dynamic reactive compensation device, and L1 ~ L3 terminal of described first filter circuit is electrically connected to each described current transformer respectively by one first fuse.
Above-mentioned low pressure mixes active dynamic reactive compensation device, and L1 ~ L3 terminal of described second filter circuit is electrically connected to each described current transformer respectively by one second fuse.
Above-mentioned low pressure mixes active dynamic reactive compensation device, and the phase splitting compensation capacitor C2 that the Y type of the second filter circuit connects has a common port N.
Above-mentioned low pressure mixes active dynamic reactive compensation device, and the K+ port of described first filter circuit and the K+ port of described second filter circuit are electrically connected on the COM end of described controller respectively.
Above-mentioned low pressure mixes active dynamic reactive compensation device, also includes lightning arrester, and described lightning arrester is parallel between each described current transformer and each described second circuit breaker, and has a common ground end.
The beneficial effects of the utility model are: controller IC MS integrating control monitoring system, mode of operation and the relevant parameter of SVG can be set, show power information in real time, the operating state of control circuit, and SVG module can realize stepless switching, compensate Rapid Variable Design idle.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
In figure:
1-controller; 2-SVG module; 3-second circuit breaker; 4-current transformer; 5-first circuit breaker; 6-first filter circuit; 601-first fuse; 7-second filter circuit; 701-second fuse; 8-lightning arrester.
Embodiment
The following description and drawings illustrate specific embodiments of the present utility model fully, to enable those skilled in the art to put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise independent parts and function are optional, and the order of operation can change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.The scope of embodiment of the present utility model comprises the gamut of claims, and all obtainable equivalent of claims.In this article, these embodiments of the present utility model can be represented with term " utility model " individually or always, this is only used to conveniently, and if in fact disclose the utility model more than, be not the scope that automatically will limit this application be any single utility model or utility model design.
As shown in Figure 1, low pressure described in the utility model mixes active dynamic reactive compensation device, is applied to low voltage three-phase distribution bus, and it formed primarily of controller 1, SVG module 2, first filter circuit and the second filter circuit.
Described controller 1 is ICMS integrating control monitoring system, there is two or more SVG connectivity port, and connection policing port, K1-K5 terminal and common port COM etc., controller 1 of the present utility model preferably has 7 inches of colored touch screens to show power information, the data compensating front and back and oscillogram in real time, and can show all kinds of operating data in real time.
Described SVG module 2 is connected to the SVG connectivity port of described controller 1 by its monitoring mouth communication, its inside has instruction current operation current and offset current circuit for generating, instruction current operation current is wherein isolated useful current component and will be produced the command signal of offset current after its reversed polarity effect from load current, described SVG module 2 uses instantaneous filtering formation technology, the non-sinusoidal waveform comprising idle component and harmonic wave is carried out " rectification ", to make it have high response speed, its dynamic response time <50us usually.
The A of described SVG module 2 side, A-N, B, B-N, C, C-N port is that current sampling signal is gone forward side by side row relax, using as its feed-forward control portion, opposite side has XA ~ XC and XN, multiple terminal such as PE, XA ~ XC is wherein connected to each phase bus of low voltage three-phase distribution bus respectively, the connection line of XA ~ XC with each phase bus is in series with the second circuit breaker 3 all successively, current transformer 4 and the first circuit breaker 5, corresponding to three-phase bus, on connection line, be then in series with 3 the second circuit breakers 3 respectively, 3 current transformers 4 and 3 the first circuit breakers 5.
Preferably, each described first circuit breaker 5 is arranged near each described low-voltage bus bar, and then be connected to XA, XB and XC terminal of described SVG module after each described first circuit breaker 5 is connected to a current transformer 4 again respectively by one second circuit breaker 3, each described second circuit breaker 3 is arranged at the position near described SVG module.
After opening each described first circuit breaker 5 and each described second circuit breaker 3, the current signal on each low-voltage bus bar that each described current transformer 4 just detects is passed to described SVG module 2, for subsequent treatment.
Described first filter circuit 6 has L1 ~ L3 tri-terminals, the each terminal of L1/L2/L3 is electrically connected to each described current transformer 4(respectively in order to be electrically connected on electrical network, also the output of each described first circuit breaker 5 can be electrically connected at), and in order to prevent the faults such as short circuit from occurring, L1 ~ L3 terminal is electrically connected to each described current transformer 4 respectively by one first fuse 601, described first filter circuit 6 also has K+ and K-port, wherein, K+ port is electrically connected on the COM end of described controller 1, K-port is electrically connected on the corresponding port (the K4 port as in the present embodiment) of described controller 1, and the C1-C3 of described first filter circuit 6 end is electrically connected with a three-phase capacitor C1 with delta connection.
Described second filter circuit 7 has L1 ~ L3 tri-terminals, the each terminal of L1/L2/L3 is electrically connected to each described current transformer 4(respectively in order to be electrically connected on electrical network, also the output of each described first circuit breaker 5 can be electrically connected at), occur to prevent the faults such as short circuit, L1 ~ L3 terminal is electrically connected to each described current transformer 4 respectively by one second fuse 701, in addition, described second filter circuit 7 also has K+, the ports such as KA/KB/KC, K+ port is wherein electrically connected on the COM end of described controller 1, KA ~ KC port is then electrically connected to other corresponding port (being K1 ~ K3 port of described controller 1 in the present embodiment) of described controller 1, and the C1-C3 of described second filter circuit 7 end is electrically connected with a phase splitting compensation capacitor C2 with Y type connection method, described phase splitting compensation capacitor C2 has a common common port N.
First filter circuit 6, second filter circuit 7 of the present utility model and SVG module 2 are connected to low-voltage distribution electrical network for taking mode in parallel, regulate amplitude and the phase place of the first filter circuit 6 or the second filter circuit 7 AC output voltage, this then can be made to send the reactive current met the demands, realize the object of dynamic stepless quick compensation.
SVG module of the present utility model is made up of three basic function module, be respectively detection module, control algorithm module and compensation output module, operation principle is by the current information of current transformer 4 detection system of outside, then current current information is analyzed via controller 1, as PF/S/Q etc., then the drive singal of compensation is provided by controller 1, finally send offset current by the first filter circuit 6 or the second filter circuit 7, compared to traditional LC filter circuit, the utility model has reactive power compensation function admirable, support the advantage compensating unbalanced load and compensate neutral harmonic current, these are all the functions not available for compensating circuit of traditional LC loop composition.Because there is not the problem of resonance overvoltage, can also use for a long time.
Above-described embodiment is only for clearly illustrating that the utility model creates example, and the restriction not to the utility model embodiment.In order to the syntagmatic of each parts is clearly described, carry out usually describing around its function to various illustrative parts and annexation thereof above, combination as this parts realizes which kind of function, the design constraint depending on specific application and apply whole device.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.All within spirit of the present utility model and principle any apparent change of extending out or variation be still among the protection range of this claim.
Claims (6)
1. low pressure mixes an active dynamic reactive compensation device, it is characterized in that, includes:
Controller, has touch-screen, and can displaying data in real-time;
SVG module, this SVG module communication is connected to this controller, can carry out the sampling of current signal, is electrically connected to the bus of three-phase low-voltage and XA ~ XC terminal of SVG module is connected respectively successively after the second circuit breaker, current transformer and the first circuit breaker;
First filter circuit, its L1 ~ L3 terminal is electrically connected to each described current transformer respectively, its K+ port is electrically connected on the COM end of described controller, K-end is connected to the corresponding port of described controller, and the C1-C3 of described first filter circuit end is electrically connected with a three-phase capacitor C1 with delta connection;
Second filter circuit, its L1 ~ L3 terminal is electrically connected to each described current transformer respectively, its K+ port is electrically connected on the COM end of described controller, KA ~ KC is connected to other corresponding port of described controller, and the C1-C3 end of described second filter circuit is electrically connected with a phase splitting compensation capacitor C2 with Y type connection method.
2. low pressure as claimed in claim 1 mixes active dynamic reactive compensation device, and it is characterized in that, L1 ~ L3 terminal of described first filter circuit is electrically connected to each described current transformer respectively by one first fuse.
3. low pressure as claimed in claim 1 mixes active dynamic reactive compensation device, and it is characterized in that, L1 ~ L3 terminal of described second filter circuit is electrically connected to each described current transformer respectively by one second fuse.
4. low pressure as claimed in claim 1 mixes active dynamic reactive compensation device, it is characterized in that, the phase splitting compensation capacitor C2 that the Y type of the second filter circuit connects has a common port N.
5. low pressure as claimed in claim 1 mixes active dynamic reactive compensation device, it is characterized in that, the K+ port of described first filter circuit and the K+ port of described second filter circuit are electrically connected on the COM end of described controller respectively.
6. low pressure as claimed in claim 1 mixes active dynamic reactive compensation device, and it is characterized in that, also include lightning arrester, described lightning arrester is parallel between each described current transformer and each described second circuit breaker, and has a common ground end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738921.3U CN204316095U (en) | 2014-11-28 | 2014-11-28 | Low pressure mixes active dynamic reactive compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420738921.3U CN204316095U (en) | 2014-11-28 | 2014-11-28 | Low pressure mixes active dynamic reactive compensation device |
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| Publication Number | Publication Date |
|---|---|
| CN204316095U true CN204316095U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420738921.3U Expired - Fee Related CN204316095U (en) | 2014-11-28 | 2014-11-28 | Low pressure mixes active dynamic reactive compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849085A (en) * | 2017-03-16 | 2017-06-13 | 上海柴德自动化有限公司 | A kind of low-voltage active filter cabinet |
-
2014
- 2014-11-28 CN CN201420738921.3U patent/CN204316095U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849085A (en) * | 2017-03-16 | 2017-06-13 | 上海柴德自动化有限公司 | A kind of low-voltage active filter cabinet |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20181128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |