CN201956609U - Improved built-in cabinet reformed aiming at harmonic elimination of power grid - Google Patents
Improved built-in cabinet reformed aiming at harmonic elimination of power grid Download PDFInfo
- Publication number
- CN201956609U CN201956609U CN2010206859891U CN201020685989U CN201956609U CN 201956609 U CN201956609 U CN 201956609U CN 2010206859891 U CN2010206859891 U CN 2010206859891U CN 201020685989 U CN201020685989 U CN 201020685989U CN 201956609 U CN201956609 U CN 201956609U
- Authority
- CN
- China
- Prior art keywords
- cabinet
- fuse
- bus
- voltage transformer
- handcart
- 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
Links
- 230000008030 elimination Effects 0.000 title abstract 2
- 238000003379 elimination reaction Methods 0.000 title abstract 2
- 230000001131 transforming effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000005350 ferromagnetic resonance Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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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
- Y02E40/40—Arrangements for reducing harmonics
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides an improved built-in cabinet reformed aiming at harmonic elimination of a power grid, which has a compact structure and light weight and is quite convenient to mount. The improved built-in cabinet comprises a fuse handcart (1), a casing (2), a bus (3) and a voltage transformer (4), wherein the fuse handcart (1) is connected to the bus (3) through the casing (2); and the voltage transformer (4) is connected with the fuse handcart (1) through the bus (3). The insulated casing is additionally arranged on the cabinet body; and a lower contact arm, an upper fuse clamp, a lower fuse clamp and an insulated shield are additionally arranged on the fuse handcart (1); and a secondary connecting wire is led out of the voltage transformer (4), is connected to an instrument chamber through a wiring channel and is connected to an aviation socket through a protection circuit breaker. By adopting the structure, the ferromagnetic resonance is actually and effectively avoided and the operation safety of the system is improved.
Description
Technical field
The utility model relates to a kind of electric network deharmonic device, and especially a kind of mid-cabinet of transforming at electric network deharmonic provides a kind of compact conformation, in light weight, and the mid-cabinet of transforming at electric network deharmonic very easily is installed.
Background technology
In the system with non effectively earth ed neutral of 6～35kV, because the magnetic circuit saturation of equipment iron-core inductances such as transformer, voltage transformer, arc suppression coil excites the ferro-resonance over-voltage that produces the higher magnitude that continues.Ferro resonance can be first-harmonic resonance, higher harmonic resonance, subharmonic resonance.Though the superpotential amplitude that this resonance produces is not high; but because of the overvoltage frequency often far below rated frequency; iron core is in the height saturation condition; its form of expression may be that phase-to-ground voltage raises; exciting current is excessive; or with frequency wobbles; cause that insulation flashover, lightning arrester burst, high value zero sequence voltage component produces, illusory grounding phenomenon occurs and the indication of incorrect ground connection; also may bring out the protection misoperation when serious or overcurrent occurs in voltage transformer and cause that PT burns out, this has brought great hidden danger for safe and stable operation of station-service system.
Summary of the invention
The purpose of this utility model just provides a kind of compact conformation, in light weight, installs very conveniently, and the simultaneously actual generation that has effectively solved ferro resonance has improved the safety of system's operation.Mid-cabinet at electric network deharmonic is transformed comprises fuse handcart, sleeve pipe, bus, voltage transformer, and the fuse handcart is connected to bus by sleeve pipe, and voltage transformer is connected with the fuse handcart by bus.Cabinet has increased insulating sleeve, and the fuse handcart has increased time contact arm and fuse clips up and down, has set up insulating shield.The secondary line is drawn from voltage transformer, by wiring channel, is connected to the control room, arrives the aviation socket by protective circuit breaker.
Description of drawings
Accompanying drawing is this real new structure schematic diagram.
Embodiment
Mid-cabinet at electric network deharmonic is transformed comprises: fuse handcart 1, sleeve pipe 2, bus 3, voltage transformer 4, and fuse handcart 1 is connected to bus 3 by sleeve pipe 2, and voltage transformer 4 is connected with fuse handcart 1 by bus 3.Cabinet has increased insulating sleeve, and fuse handcart 1 has increased time contact arm and fuse clips up and down, has set up insulating shield.The secondary line is drawn from voltage transformer 4, by wiring channel, is connected to the control room, arrives the aviation socket by protective circuit breaker.
Claims (4)
1. mid-cabinet of transforming at electric network deharmonic, it is characterized in that: comprise fuse handcart (1), sleeve pipe (2), bus (3), voltage transformer (4), fuse handcart (1) is connected to bus (3) by sleeve pipe (2), and voltage transformer (4) is connected with fuse handcart (1) by bus (3).
2. the mid-cabinet of transforming at electric network deharmonic according to claim 1, it is characterized in that: cabinet has increased insulating sleeve.
3. the mid-cabinet of transforming at electric network deharmonic according to claim 2 is characterized in that: fuse handcart (1) has increased time contact arm and fuse clips up and down, has set up insulating shield.
4. the mid-cabinet of transforming at electric network deharmonic according to claim 3, it is characterized in that: the secondary line is drawn from voltage transformer (4), by wiring channel, is connected to the control room, arrives the aviation socket by protective circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206859891U CN201956609U (en) | 2010-12-20 | 2010-12-20 | Improved built-in cabinet reformed aiming at harmonic elimination of power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206859891U CN201956609U (en) | 2010-12-20 | 2010-12-20 | Improved built-in cabinet reformed aiming at harmonic elimination of power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201956609U true CN201956609U (en) | 2011-08-31 |
Family
ID=44500711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206859891U Expired - Fee Related CN201956609U (en) | 2010-12-20 | 2010-12-20 | Improved built-in cabinet reformed aiming at harmonic elimination of power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201956609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701056A (en) * | 2013-11-18 | 2014-04-02 | 川铁电气（天津）集团有限公司 | Armored type metal sealed switch cabinet with transformer cabin and fuse handcart |
| CN109390852A (en) * | 2018-10-12 | 2019-02-26 | 酒钢(集团)宏联自控有限责任公司 | Wiring method for transforming secondary circuit of fixed voltage transformer in 10kV-PT cabinet |
-
2010
- 2010-12-20 CN CN2010206859891U patent/CN201956609U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701056A (en) * | 2013-11-18 | 2014-04-02 | 川铁电气（天津）集团有限公司 | Armored type metal sealed switch cabinet with transformer cabin and fuse handcart |
| CN109390852A (en) * | 2018-10-12 | 2019-02-26 | 酒钢(集团)宏联自控有限责任公司 | Wiring method for transforming secondary circuit of fixed voltage transformer in 10kV-PT cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20111220 |