CN202797990U - Low voltage capacitance compensation device - Google Patents
Low voltage capacitance compensation device Download PDFInfo
- Publication number
- CN202797990U CN202797990U CN 201220393428 CN201220393428U CN202797990U CN 202797990 U CN202797990 U CN 202797990U CN 201220393428 CN201220393428 CN 201220393428 CN 201220393428 U CN201220393428 U CN 201220393428U CN 202797990 U CN202797990 U CN 202797990U
- Authority
- CN
- China
- Prior art keywords
- busbar
- voltage capacitance
- low
- compensating device
- duplexure
- Prior art date
- 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 - Fee Related
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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
Abstract
The utility model discloses a low voltage capacitance compensation device. Electrical elements are disposed in a cabinet body. A circuit comprises a main circuit and at least two branch circuits. The main circuit comprises a main busbar, a main switch, and a current transformer. Each of the branch circuits comprises a capacitor and a reactor. The branch circuits are connected with the current transformer. The low voltage capacitance compensation device has advantages of good anti-harmonic capability, and abilities of preventing the capacitor damage caused by the overlarge harmonic of the power network, and reducing the temperature rising caused by the current heating.
Description
Technical field
The utility model relates to a kind of electrical control gear, particularly the low-voltage capacitance compensating device.
Background technology
Along with all kinds of power electronic equipments use in a large number, low-voltage power system has how idle and harmonic current, needs the low-voltage capacitance compensating device can compensate more reactive power, and can bear larger harmonic current.But existing low-voltage compensation apparatus in arrangements of components, bear and have many deficiencies aspect large electric current and the processing safety.The one,, anti-Harmonious Waves in Power Systems ability is inadequate, often occurs to cause capacitor to damage fault because mains by harmonics is excessive; The 2nd,, because adopting large value capacitor, line current increases, and causes branch's busbar connection place heating accident.
The utility model content
The utility model aims to provide a kind of low-voltage capacitance compensating device, has preferably anti-harmonic wave ability, avoids causing damage because mains by harmonics is excessive, improves the temperature rising that current heating causes.
Technical solutions of the utility model are: a kind of low-voltage capacitance compensating device, electric elements are installed in the cabinet, circuit comprises total loop and at least two duplexures, total loop comprises main busbar, main switch, current transformer, duplexure comprises capacitor and reactor, and duplexure is connected on the current transformer.
Further, described duplexure has control element, and described control element comprises thermal relay, contactor, fuse.
Further, described duplexure links to each other with total loop by branch's busbar, and branch's busbar comprises perpendicular branch's busbar and at least two horizontal branch busbars, and horizontal branch busbar connects with total loop, and perpendicular branch busbar connects horizontal branch busbar.
Further, described cabinet is divided into bus-bar room, capacitor chamber, switch gear room, four individual compartment in control cables chamber by steel plate; Bus-bar room is installed main busbar; Capacitor chamber is equipped with reactor and capacitor; Main switch, thermal relay, contactor, fuse, current transformer are installed by the switch gear room; The control cables chamber is the weak-current cable passage.
Further, be provided with lightning arrester on the described total loop, lightning arrester is installed in the switch gear room.
Further, described duplexure control element thermal relay, contactor, fuse are vertical the installation.
Further, described duplexure control element thermal relay, contactor, fuse are integrated on the mounting panel, have the modularization installing hole on the mounting panel.
Further, described cabinet back door is provided with blower fan, and capacitor chamber is lowered the temperature.
Further, the outer operating grip of described main switch and cabinet is mechanical interlocking, and main switch divides has no progeny, and just can open the cabinet door.
The utlity model has preferably anti-harmonic wave ability, avoid causing capacitance damage because mains by harmonics is excessive, improve the temperature rising that current heating causes.
Description of drawings
Fig. 1 is the utility model side structure schematic diagram.
Fig. 2 is the utility model Facad structure schematic diagram.
Among the figure: 1-cabinet, 2-capacitor chamber, 3-capacitor, 4-reactor, the 5-blower fan, 6-master's busbar, 7-bus-bar room, 8-control cables chamber, the 9-main switch, 10-operating grip, 11-switch gear room, 12-thermal relay, the 13-contactor, 14-fuse, 15-fuse dividing plate, 16-insulator, the 17-lightning arrester, 18-current transformer, the horizontal branch of 19-busbar, the perpendicular branch of 20-busbar, 21-mounting panel, the horizontal branch of 22-busbar.
Embodiment
As shown in Figure 1, 2, the utility model low-voltage capacitance compensating device, electric elements are installed in the cabinet 1, circuit comprises total loop and at least two duplexures, total loop comprises main busbar 6, main switch 9, current transformer 18, duplexure comprises capacitor 3 and reactor 4, and duplexure is connected on the current transformer 18.
Preferably, minute loop reactor 4 can significantly reduce harmonic current more than 3 times common in the present low-pressure system to the infringement of capacitor after making up with capacitor 3, satisfies the compensation requirement of large harmonic current.
Further, duplexure has control element, and control element comprises thermal relay 12, contactor 13, fuse 14.
Duplexure links to each other with total loop by branch's busbar, branch's busbar comprises female 20 row and at least two the horizontal branch busbars 19,22 of perpendicular branch, horizontal branch busbar 19,22 connects with total loop, perpendicular branch busbar 20 connects horizontal branch busbar 19,22, horizontal branch busbar 19,22 is supported by insulator 16, can bear the short-circuit electromotive force of 65KA.Total current is born respectively by horizontal branch row 19,22, is not increasing under the branch row specification conditions, has increased the total current bearing capacity, in addition, has also widened a minute circuit connection space.
Further, described cabinet 1 is divided into bus-bar room 7, capacitor chamber 2, switch gear room 11,8 four individual compartment in control cables chamber by steel plate; Bus-bar room 7 is installed main busbar 6; Capacitor chamber 2 is equipped with reactor 4 and capacitor 3; Main switch 9, thermal relay 12, contactor 13, fuse 14, current transformer 18 are installed by switch gear room 11; Control cables chamber 8 is the weak-current cable passage.The dividing plate made from steel plate between the individual compartment is separated, and when arc fault appears in element in a certain compartment, but the dividing plate fault restriction enlarges.
Be provided with lightning arrester 17 on the total loop, system is carried out overvoltage protection, lightning arrester 17 is installed in switch gear room 11.
Further, duplexure control element thermal relay 12, contactor 13, fuse 14 are vertical the installation, are convenient to circulation of air and cable connection.
Further, described duplexure control element thermal relay 12, contactor 13, fuse 14 are integrated on the mounting panel 21, have the modularization installing hole on the mounting panel 21, can adjust flexibly elements combination according to electric scheme.
The heating problem of power component reactor 4, capacitor 3 during for the minimizing full load arranges 2 coolings of 5 pairs of capacitor chamber of blower fan at cabinet 1 back door, blower fan 5 can be 2 to 6.
For improving fail safe, main switch 9 is mechanical interlocking with the outer operating grip 10 of cabinet, only has no progeny in 9 minutes at main switch, just can open the cabinet door, guarantees operating personnel's safety.
Certainly; the utility model also can have other various embodiments; in the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (9)
1. low-voltage capacitance compensating device, it is characterized in that: electric elements are installed in the cabinet (1), circuit comprises total loop and at least two duplexures, total loop comprises main busbar (6), main switch (9), current transformer (18), duplexure comprises capacitor (3) and reactor (4), and duplexure is connected on the current transformer (4).
2. low-voltage capacitance compensating device according to claim 1, it is characterized in that: described duplexure has control element, and described control element comprises thermal relay (12), contactor (13), fuse (14).
3. low-voltage capacitance compensating device according to claim 2, it is characterized in that: described duplexure links to each other with total loop by branch's busbar, branch's busbar comprises perpendicular branch's busbar (20) and at least two horizontal branch busbars (19,22), horizontal branch busbar (19,22) connects with total loop, and perpendicular branch's busbar (20) connects horizontal branch busbar (19,22).
4. low-voltage capacitance compensating device according to claim 3, it is characterized in that: described cabinet (1) is divided into bus-bar room (7), capacitor chamber (2), switch gear room (11), (8) four individual compartment in control cables chamber by steel plate; Bus-bar room (7) is installed main busbar (6); Capacitor chamber (2) is equipped with reactor (4) and capacitor (3); Main switch (9), thermal relay (12), contactor (13), fuse (14), current transformer (18) are installed by switch gear room (11); Control cables chamber (8) is the weak-current cable passage.
5. low-voltage capacitance compensating device according to claim 4, it is characterized in that: be provided with lightning arrester (17) on the described total loop, lightning arrester (17) is installed in switch gear room (11).
6. low-voltage capacitance compensating device according to claim 4 is characterized in that: described duplexure control element thermal relay (12), contactor (13), fuse (14) are installed for vertical.
7. low-voltage capacitance compensating device according to claim 6, it is characterized in that: described duplexure control element thermal relay (12), contactor (13), fuse (14) are integrated on the mounting panel (21), and mounting panel has the modularization installing hole on (21).
8. low-voltage capacitance compensating device according to claim 4, it is characterized in that: described cabinet (1) back door is provided with blower fan (5), and capacitor chamber (2) is lowered the temperature.
9. low-voltage capacitance compensating device according to claim 4 is characterized in that: described main switch (9) be mechanical interlocking with the outer operating grip (10) of cabinet, and main switch (9) divides has no progeny, and just can open the cabinet door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393428 CN202797990U (en) | 2012-03-19 | 2012-08-09 | Low voltage capacitance compensation device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220102986.X | 2012-03-19 | ||
| CN201220102986 | 2012-03-19 | ||
| CN 201220393428 CN202797990U (en) | 2012-03-19 | 2012-08-09 | Low voltage capacitance compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202797990U true CN202797990U (en) | 2013-03-13 |
Family
ID=47825166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220393428 Expired - Fee Related CN202797990U (en) | 2012-03-19 | 2012-08-09 | Low voltage capacitance compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202797990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956751A (en) * | 2013-11-25 | 2014-07-30 | 合肥徽力电气技术有限公司 | Reactive power compensator |
-
2012
- 2012-08-09 CN CN 201220393428 patent/CN202797990U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956751A (en) * | 2013-11-25 | 2014-07-30 | 合肥徽力电气技术有限公司 | Reactive power compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20200809 |