CN203014381U - Line trap - Google Patents
Line trap Download PDFInfo
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- CN203014381U CN203014381U CN2013200074504U CN201320007450U CN203014381U CN 203014381 U CN203014381 U CN 203014381U CN 2013200074504 U CN2013200074504 U CN 2013200074504U CN 201320007450 U CN201320007450 U CN 201320007450U CN 203014381 U CN203014381 U CN 203014381U
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- phase reactor
- phase
- reactor
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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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Abstract
A line trap relates to the technology field of electric power equipment. The line trap comprises a first three-phase reactor, a second three-phase reactor, a third three-phase reactor, a fourth three-phase reactor, a fifth three-phase reactor, a first three-phase capacitor and a second three-phase capacitor. The first three-phase reactor, the second three-phase reactor and the third three-phase reactor are in series connection together; the fourth three-phase reactor is in series with the first three-phase reactor to form a five-turning circuit in a star-shaped connection or triangle connection manner; the fifth three-phase reactor is in series with the second three-phase reactor to form a seven-turning circuit in a star-shaped connection or triangle connection manner; the five-turning circuit is connected to the connection point of the fifth three-phase reactor and the second three-phase reactor; and the seven-turning circuit is connected to the connection point of the second three-phase reactor and the third three-phase reactor. According to the line trap, the harmonic waves with frequencies larger than the frequency of a fundamental wave are prevented from flowing into the power supply system, the influence of harmonic waves generated by an electric load on the power supply system is effectively inhibited, and a harmonic current flowing into the power supply system is minimized.
Description
Technical field
The utility model relates to electrical equipment technical field, is specifically related to a kind of circuit wave resistance device that high order harmonic component flows into electric power system that limits.
Background technology
Along with the development of national economy, power electronic technology, the needs of industrial and mining enterprises' energy-saving and emission-reduction, variation has also occured simultaneously in the power load feature of enterprise, in the time of the extensive application of the extensive use of converter technique, electric power Semiconductor Converting Technology, frequency heating device, smelting device, also brought " pollution " to electrical network, harmonic problem is one of problem of electricity consumption " pollution ".
the harmonic wave control mode is divided into active power filtering (APF) and passive filtering (PF), passive filtering adopts the mode in parallel with power load usually, for specific harmonic wave provides low impedance path to reach the effect of filtering, its filter effect depends on: the split ratio of the short-circuit impedance of filtering channel and system, filter reactor due to filtering channel, the inherent feature of filtering capacitor, can't make the impedance of filtering channel accomplish very low, the harmonic current that flows into filtering channel is limited, so, the filter effect of passive filtration unit (PF) is not satisfactory, especially more obvious in the following electric power system of 1000V, active power filtering (APF) device is not subjected to the impact of system short-circuit impedance, can reach good filter effect, but because price is more expensive at present, the general medium-sized and small enterprises of its price are reluctant to accept.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of circuit wave resistance device, can effectively suppress the harmonic wave of power load generation to the impact of electric power system, reduces harmonic current and flows into electric power system.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of circuit wave resistance device, the technical scheme of circuit wave resistance device of the present utility model are divided into three-phase three-wire system balanced load and three-phase four-wire system unbalanced load by two types;
for the balanced loaded three line wave resistance devices of three-phase three-wire system, comprise the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3, the 4th three-phase reactor L4, the 5th three-phase reactor L5 and the first three-phase capacitor C1, the second three-phase capacitor C2, described the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3 is cascaded, described the 4th three-phase reactor L4 and the first three-phase capacitor C1 are composed in series 5 resonant tank X1 that Y-connection or triangle are connected, described the 5th three-phase reactor L5 and the second three-phase capacitor C2 are composed in series 7 resonant tank X2 that Y-connection or triangle are connected, described 5 resonant tank X1 are connected to the tie point of the first three-phase reactor L1 and the second three-phase reactor L2, described 7 resonant tank X2 are connected to the tie point of the second three-phase reactor L2 and the 3rd three-phase reactor L3.
three-phase and four-line wave resistance device for the three-phase four-wire system unbalanced load, comprise the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3, the 4th three-phase reactor L4, the 5th three-phase reactor L5, single-phase reactor L6 and the first three-phase capacitor C1, the second three-phase capacitor C2, single-phase electricity container C3, the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3 series connection, the 4th three-phase reactor L4 and the first three-phase capacitor C1 are composed in series 5 resonant tank X1 that Y-connection or triangle are connected, the 5th three-phase reactor L5 and the second three-phase capacitor C2 are composed in series 7 resonant tank X4 that Y-connection or triangle are connected, single-phase reactor L6 and single-phase electricity container C3 are composed in series zero sequence choke circuit X3, 5 resonant tank X1 are connected to the tie point of the first three-phase reactor L1 and the second three-phase reactor L2, 7 resonant tank X2 are connected to the tie point of the second three-phase reactor L2 and the 3rd three-phase reactor L3, be parallel with circuit breaker J1 on zero sequence choke circuit X3, zero sequence choke circuit X3 is connected to the zero line of power load and the zero line side of electric power system.
For the difference of three-phase and four-line formula wave resistance device and phase three-wire three formula wave resistance device with: increase by single-phase reactor (L6) the zero sequence wave resistance device in parallel with single-phase electricity container (C3) on the basis of phase three-wire three wave resistance device, the tuned frequency of zero sequence wave resistance device is set in power frequency, is used for stoping Zero-pharse harmonic to flow into electrical network.
The reactance Rate of the first three-phase reactor L1 and the 4th three-phase reactor L4 is that the reactance Rate of 3%, the second three-phase reactor L2 and the 5th three-phase reactor L5 is that the reactance Rate of 2%, the three three-phase reactor L3 and unidirectional reactor L6 is 1%.
The beneficial effects of the utility model are: the utility model is used for stoping greater than first-harmonic (50Hz) harmonic wave inflow electric power system in addition, can effectively suppress the harmonic wave of power load generation to the impact of electric power system, reduce harmonic current and flow into electric power system, be suitable for solving the harmonic problem of electric power variable flow device, as frequency converter, intermediate frequency furnace, milling train, banbury etc.
Description of drawings
Fig. 1 is the utility model phase three-wire three Y-connection winding diagram;
Fig. 2 is that the utility model phase three-wire three triangle connects winding diagram;
Fig. 3 is the utility model three-phase and four-line Y-connection winding diagram;
Fig. 4 is that the utility model three-phase and four-line triangle connects winding diagram;
Fig. 5 is that the utility model is used for phase three-wire three load Y-connection application winding diagram;
Fig. 6 is that the utility model is used for phase three-wire three load triangle connection application winding diagram;
Fig. 7 is that the utility model is used for three-phase and four-line load Y-connection application winding diagram;
Fig. 8 is that the utility model is used for three-phase and four-line load triangle connection application winding diagram.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
as Fig. 1, Fig. 2, Fig. 5, shown in Figure 6, be connected between electric power system and power load by the electricity electrical system access point, wherein for the balanced loaded three line wave resistance devices of three-phase three-wire system, comprise the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3, the 4th three-phase reactor L4, the 5th three-phase reactor L5 and the first three-phase capacitor C1, the second three-phase capacitor C2, described the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3 is cascaded, described the 4th three-phase reactor L4 and the first three-phase capacitor C1 are composed in series 5 resonant tank X1 that Y-connection or triangle are connected, described the 5th three-phase reactor L5 and the second three-phase capacitor C2 are composed in series 7 resonant tank X2 that Y-connection or triangle are connected, described 5 resonant tank X1 are connected to the tie point of the first three-phase reactor L1 and the second three-phase reactor L2, described 7 resonant tank X2 are connected to the tie point of the second three-phase reactor L2 and the 3rd three-phase reactor L3.
as Fig. 3, Fig. 4, Fig. 7, shown in Figure 8, for the three-phase and four-line wave resistance device of three-phase four-wire system unbalanced load, comprise the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3, the 4th three-phase reactor L4, the 5th three-phase reactor L5, single-phase reactor L6 and the first three-phase capacitor C1, the second three-phase capacitor C2, single-phase electricity container C3, the first three-phase reactor L1, the second three-phase reactor L2, the 3rd three-phase reactor L3 series connection, the 4th three-phase reactor L4 and the first three-phase capacitor C1 are composed in series 5 resonant tank X1 that Y-connection or triangle are connected, the 5th three-phase reactor L5 and the second three-phase capacitor C2 are composed in series 7 resonant tank X4 that Y-connection or triangle are connected, single-phase reactor L6 and single-phase electricity container C3 are composed in series zero sequence choke circuit X3,5 resonant tank X1 are connected to the tie point of the first three-phase reactor L1 and the second three-phase reactor L2,7 resonant tank X2 are connected to the tie point of the second three-phase reactor L2 and the 3rd three-phase reactor L3, be parallel with circuit breaker J1 on zero sequence choke circuit X3, zero sequence choke circuit X3 is connected to the zero line of power load and the zero line side of electric power system.
For the difference of three-phase and four-line formula wave resistance device and phase three-wire three formula wave resistance device with: increase by single-phase reactor (L6) the zero sequence wave resistance device in parallel with single-phase electricity container (C3) on the basis of phase three-wire three wave resistance device, the tuned frequency of zero sequence wave resistance device is set in power frequency, is used for stoping Zero-pharse harmonic to flow into electrical network.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. circuit wave resistance device, it is characterized in that: comprise the first three-phase reactor (L1), the second three-phase reactor (L2), the 3rd three-phase reactor (L3), the 4th three-phase reactor (L4), the 5th three-phase reactor (L5) and the first three-phase capacitor (C1), the second three-phase capacitor (C2), described the first three-phase reactor (L1), the second three-phase reactor (L2), the 3rd three-phase reactor (L3) is cascaded, described the 4th three-phase reactor (L4) and the first three-phase capacitor (C1) are composed in series 5 resonant tanks (X1) that Y-connection or triangle are connected, described the 5th three-phase reactor (L5) and the second three-phase capacitor (C2) are composed in series 7 resonant tanks (X2) that Y-connection or triangle are connected, described 5 resonant tanks (X1) are connected to the tie point of the first three-phase reactor (L1) and the second three-phase reactor (L2), described 7 resonant tanks (X2) are connected to the tie point of the second three-phase reactor (L2) and the 3rd three-phase reactor (L3).
2. circuit wave resistance device according to claim 1, it is characterized in that: also comprise zero sequence choke circuit (X3), described zero sequence choke circuit (X3) comprises single-phase reactor (L6) and the single-phase electricity container (C3) that is cascaded, described zero sequence choke circuit (X3) is parallel with circuit breaker (J1), and described zero sequence choke circuit (X3) is connected on the zero line of power load and the zero line side of electric power system.
3. circuit wave resistance device according to claim 1, it is characterized in that: the reactance Rate of described the first three-phase reactor (L1) and the 4th three-phase reactor (L4) is 3%.
4. circuit wave resistance device according to claim 1, it is characterized in that: the reactance Rate of described the second three-phase reactor (L2) and the 5th three-phase reactor (L5) is 2%.
5. circuit wave resistance device according to claim 1, it is characterized in that: the reactance Rate of described the 3rd three-phase reactor (L3) is 1%.
6. circuit wave resistance device according to claim 2, it is characterized in that: the reactance Rate of described unidirectional reactor (L6) is 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200074504U CN203014381U (en) | 2013-01-08 | 2013-01-08 | Line trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200074504U CN203014381U (en) | 2013-01-08 | 2013-01-08 | Line trap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014381U true CN203014381U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200074504U Expired - Fee Related CN203014381U (en) | 2013-01-08 | 2013-01-08 | Line trap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014381U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269072A (en) * | 2013-01-08 | 2013-08-28 | 安徽华正电气有限公司 | Circuit wave trapping device |
-
2013
- 2013-01-08 CN CN2013200074504U patent/CN203014381U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269072A (en) * | 2013-01-08 | 2013-08-28 | 安徽华正电气有限公司 | Circuit wave trapping device |
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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 |
Granted publication date: 20130619 Termination date: 20180108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |