CN202260456U - Second-order wave blocking high-pass filtering apparatus used for traction and electric power supply, for three-phase electric power supply system - Google Patents
Second-order wave blocking high-pass filtering apparatus used for traction and electric power supply, for three-phase electric power supply system Download PDFInfo
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- CN202260456U CN202260456U CN201120326207XU CN201120326207U CN202260456U CN 202260456 U CN202260456 U CN 202260456U CN 201120326207X U CN201120326207X U CN 201120326207XU CN 201120326207 U CN201120326207 U CN 201120326207U CN 202260456 U CN202260456 U CN 202260456U
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- power supply
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- electric power
- single phase
- pass filtering
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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
Abstract
The utility model discloses a second-order wave blocking high-pass filtering apparatus used for traction and electric power supply, for a three-phase electric power supply system, wherein a capacitor (2) and a reactor (1) are connected in parallel and then connected with a resistor (3) in series to form a single phase filter, the single phase filter is connected between the electric power supply arm (5) of a traction power substation (4) and an GND, or three single phase filters are connected with three phase lines of the three-phase electric power supply system by using a Y-type connection method or delta-type connection method. The second-order wave blocking high-pass filtering apparatus can effectively avoid the external exchange of reactive power, and increases electric power supply quality.
Description
Technical field
The utility model relates to electrified railway power supply and three-phase power power supply technique field.
Background technology
Suitable length in the past is in one period, is widely used in industrial every field based on uncontrollable, the half control type rectifier of diode, thyristor, and it is low that this system has power factor, the characteristics that the low-frequency range harmonic content is big.Along with the progress of power electronic technology, be used widely based on the friendship-orthogonal-current transformer technology of full control property such as GTO, IGBT, IGCT device.The typical feature of these systems is: 1) power factor need not reactive power compensation near 1; 2) higher harmonic current of three, five, seven inferior low-frequency ranges significantly improves, and increases on the contrary in the high order harmonic component of higher frequency section.These new systems need not absorb idle high-order harmonic filtering device in a hurry.
High-speed railway employing electric traction without exception is to use the technological canonical system of indirect AC convertor.Compare with general fast railway; The electric traction of high-speed railway locomotive or EMUs (EMU) does not re-use the direct current machine of friendship-straight type unsteady flow; And the asynchronous machine of the more superior AC-DC-AC unsteady flow of serviceability, the reactive current content and the low-frequency range high order harmonic component of single just traction net side, the AC-DC-AC train has great change than friendship-car in upright arrangement; But the more higher harmonic content more than 20 times increases on the contrary to some extent, hands over straight turning and the harmonic content of handing over the orthogonal car.When higher harmonic resonance takes place the traction net, also can influence the normal operation of train.For this reason, high pass filtering device usually need be installed and come the filtering high order harmonic component.
Be used for the system of high order filtering commonly used single order, second order high pass filtering device arranged, the advantage of single order high pass filtering device is simple in structure, cost is low, operation maintenance is convenient, shortcoming is that the power frequency power loss is big; The second order high pass filtering device reduces the power frequency power loss because of the resistance shunt inductance.In order further to reduce the power frequency power loss; Three rank and C type high pass filtering device.Wherein, C type high pass filtering device utilizes inductance and the series resonance of electric capacity 2 under power frequency to make the power frequency power loss reduce to minimum, can be zero.But the complex structure of three rank and C type high pass filtering device, cost increases.Simultaneously, also be appreciated that above-mentioned various high pass filtering devices are the reactive power of absorption system under power frequency all, and the power factor of bullet train approaches 1, the power factor that this will reduce system causes the waste of equipment.
The utility model content
First purpose of the utility model provides a kind of traction power supply with second order wave arrestment high pass filtering device, and it can effectively avoid the foreign exchanges of reactive power, improves power supply quality.
The utility model realizes that the technical scheme that its first utility model purpose is adopted is: a kind of traction power supply is with second order wave arrestment high pass filtering device; It is characterized in that: being in parallel to connect with resistance by capacitor and reactor constitutes single phase filter again; One end ground connection of this single phase filter, the other end links to each other with the supply arm of traction substation.
Second purpose of the utility model provides a kind of three-phase power electric power system with second order wave arrestment high pass filtering device, and it can effectively avoid the foreign exchanges of reactive power, improves power supply quality.
The utility model realizes that first kind of technical scheme that its second utility model purpose adopted is: a kind of three-phase power electric power system is with second order wave arrestment high pass filtering device; It is characterized in that: being in parallel to connect with resistance by capacitor and reactor constitutes single phase filter again; Three single phase filters are pressed wye connection and are linked to each other with three-phase power supply system; Promptly arbitrary end of three single phase filters links together, and the other end of three single phase filters links to each other with three phase lines of three-phase power supply system respectively.
The utility model realizes that second kind of technical scheme that its second utility model purpose adopted is: a kind of three-phase power electric power system is with second order wave arrestment high pass filtering device; It is characterized in that: being in parallel to connect with resistance by capacitor and reactor constitutes single phase filter again; Three single phase filters connect method by the △ type and link to each other with three-phase power supply system; Promptly three single phase filters interconnect; Constitute the triangle of sealing, the tie point between the single phase filter links to each other with three phase lines of three-phase power supply system respectively.
The operation principle of the utility model is: electric capacity, inductance produce parallel resonance down in assigned frequency (like power frequency); Not foreign exchanges reactive power; And because of the electric current that does not have this frequency does not consume corresponding active power through resistance; Under high order harmonic component, have high pass characteristic and higher order resonances is played damping action.Therefore, the wave arrestment high pass filtering device of the utility model can make three-phase power supply system and traction power supply not produce reactive power and not consume active power under power frequency, has improved power supply quality, better guarantees the safety of three phase supply and traction power supply.
Compared with prior art, the beneficial effect of the utility model is:
1, not foreign exchanges reactive power under assigned frequency (like power frequency) promptly has the wave arrestment effect, and the system that do not influence is idle.
2, not specifying the electric current of frequency (like power frequency) not consume corresponding active power through R because of having, is energy-conserving and environment-protective.
3, the same with traditional high pass filtering device, under high order harmonic component, have high pass characteristic and higher order resonances is played damping action.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
Description of drawings
Fig. 1 is the circuit structure diagram of the utility model traction power supply with second order wave arrestment high pass filtering device.
Fig. 2 is that a kind of three-phase power electric power system of the utility model is with second order wave arrestment high pass filtering device circuit structure diagram.
Fig. 3 is that the another kind of three-phase power electric power system of the utility model is with second order wave arrestment high pass filtering device circuit structure diagram.
Embodiment
Fig. 1 illustrates; A kind of traction power supply of the utility model uses the embodiment of second order wave arrestment high pass filtering device to be: being in parallel to connect with resistance 3 by capacitor 2 and reactor 1 constitutes single phase filter again; One end ground connection of this single phase filter, the other end links to each other with the supply arm 5 of traction substation 4.
Fig. 2 illustrates; A kind of three-phase power electric power system of the utility model uses a kind of embodiment of second order wave arrestment high pass filtering device to be: being in parallel to connect with resistance 3 by capacitor 2 and reactor 1 constitutes single phase filter again; Three single phase filters are pressed wye connection and are linked to each other with three-phase power supply system; Promptly an end of three single phase filters links together, and the other end of three single phase filters links to each other with three phase line A, B, C of three-phase power supply system respectively.
Fig. 3 illustrates; A kind of three-phase power electric power system of the utility model uses the another kind of embodiment of second order wave arrestment high pass filtering device to be: being in parallel to connect with resistance 3 by capacitor 2 and reactor 1 constitutes single phase filter again; Three single phase filters connect method by the △ type and link to each other with three-phase power supply system; Promptly three single phase filters interconnect, and constitute the triangle of sealing, and the tie point between the single phase filter links to each other with three phase line A, B, C of three-phase power supply system respectively.
Claims (3)
1. a traction power supply is with second order wave arrestment high pass filtering device; It is characterized in that: being in parallel to connect with resistance (3) by capacitor (2) and reactor (1) constitutes single phase filter again; One end ground connection of this single phase filter, the other end links to each other with the supply arm (5) of traction substation (4).
2. a three-phase power electric power system is with second order wave arrestment high pass filtering device; It is characterized in that: being in parallel to connect with resistance (3) by capacitor (2) and reactor (1) constitutes single phase filter again; Three single phase filters are pressed wye connection and are linked to each other with three-phase power supply system; Promptly arbitrary end of three single phase filters links together, and the other end of three single phase filters links to each other with three phase lines (A, B, C) of three-phase power supply system respectively.
3. a three-phase power electric power system is with second order wave arrestment high pass filtering device; It is characterized in that: being in parallel to connect with resistance (3) by capacitor (2) and reactor (1) constitutes single phase filter again; Three single phase filters connect method by the △ type and link to each other with three-phase power supply system; Promptly three single phase filters interconnect, and constitute the triangle of sealing, and the tie point between the single phase filter links to each other with three phase lines (A, B, C) of three-phase power supply system respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120326207XU CN202260456U (en) | 2011-09-01 | 2011-09-01 | Second-order wave blocking high-pass filtering apparatus used for traction and electric power supply, for three-phase electric power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120326207XU CN202260456U (en) | 2011-09-01 | 2011-09-01 | Second-order wave blocking high-pass filtering apparatus used for traction and electric power supply, for three-phase electric power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202260456U true CN202260456U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120326207XU Expired - Lifetime CN202260456U (en) | 2011-09-01 | 2011-09-01 | Second-order wave blocking high-pass filtering apparatus used for traction and electric power supply, for three-phase electric power supply system |
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| Country | Link |
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| CN (1) | CN202260456U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354978A (en) * | 2011-09-01 | 2012-02-15 | 李子晗 | Second-order wave-blocking high-pass filter for tractive power supply and three-phase power supply system |
| CN104085318A (en) * | 2014-06-23 | 2014-10-08 | 北京交通大学 | Steel rail resonance grounding device |
-
2011
- 2011-09-01 CN CN201120326207XU patent/CN202260456U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354978A (en) * | 2011-09-01 | 2012-02-15 | 李子晗 | Second-order wave-blocking high-pass filter for tractive power supply and three-phase power supply system |
| CN104085318A (en) * | 2014-06-23 | 2014-10-08 | 北京交通大学 | Steel rail resonance grounding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |