CN102354978A - Second-order wave-blocking high-pass filter for tractive power supply and three-phase power supply system - Google Patents
Second-order wave-blocking high-pass filter for tractive power supply and three-phase power supply system Download PDFInfo
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- CN102354978A CN102354978A CN2011102570580A CN201110257058A CN102354978A CN 102354978 A CN102354978 A CN 102354978A CN 2011102570580 A CN2011102570580 A CN 2011102570580A CN 201110257058 A CN201110257058 A CN 201110257058A CN 102354978 A CN102354978 A CN 102354978A
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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 invention discloses a second-order wave-blocking high-pass filter for tractive power supply and a three-phase power supply system. The second-order wave-blocking high-pass filter is characterized in that: a capacitor (2) and a reactor (3) 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 a power supply arm (5) of a traction substation (4) and the ground, or three single-phase filters are connected with three phase wires of a three-phase power supply system by adopting a Y-type connection method or a Delta-type connection method. The second-order wave-blocking high-pass filter has the capabilities of effectively avoiding external exchange of reactive power and improving the power supply quality.
Description
Technical field
The present invention 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 filter 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, bivalent high-pass filter arranged, the advantage of single order high pass filter is simple in structure, cost is low, operation maintenance is convenient, shortcoming is that the power frequency power loss is big; Bivalent high-pass filter 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 filter.Wherein, C type high pass filter 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 filter, cost increases.Simultaneously, also be appreciated that above-mentioned various high pass filters 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.
Summary of the invention
First purpose of the present invention provides a kind of traction power supply with second order wave arrestment high pass filter, and it can effectively avoid the foreign exchanges of reactive power, improves power supply quality.
The present invention realizes that the technical scheme that its first goal of the invention adopts is: a kind of traction power supply is with second order wave arrestment high pass filter; 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 present invention provides a kind of three-phase power electric power system with second order wave arrestment high pass filter, and it can effectively avoid the foreign exchanges of reactive power, improves power supply quality.
The present invention realizes that its second first kind of technical scheme that goal of the invention adopted is: a kind of three-phase power electric power system is with second order wave arrestment high pass filter; 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 present invention realizes that its second second kind of technical scheme that goal of the invention adopted is: a kind of three-phase power electric power system is with second order wave arrestment high pass filter; 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, and constitute the triangle of sealing, and the tie point between the single phase filter links to each other with three phase lines of three-phase power supply system respectively.
Operation principle of the present invention 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, wave arrestment high pass filter of the present invention 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 invention has the beneficial effects as follows:
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 filter, 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 present invention is done further description.
Description of drawings
Fig. 1 is the circuit structure diagram of traction power supply of the present invention with second order wave arrestment high pass filter.
Fig. 2 is that a kind of three-phase power electric power system of the present invention is with second order wave arrestment circuit of high pass filter structure chart.
Fig. 3 is that another kind of three-phase power electric power system of the present invention is with second order wave arrestment circuit of high pass filter structure chart.
Embodiment
Fig. 1 illustrates; A kind of traction power supply of the present invention uses the embodiment of second order wave arrestment high pass filter 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 present invention uses a kind of embodiment of second order wave arrestment high pass filter 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 present invention uses the another kind of embodiment of second order wave arrestment high pass filter 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 Δ 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 filter; 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 filter; 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 filter; 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 Δ 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102570580A CN102354978A (en) | 2011-09-01 | 2011-09-01 | Second-order wave-blocking high-pass filter for tractive power supply and three-phase power supply system |
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| CN2011102570580A CN102354978A (en) | 2011-09-01 | 2011-09-01 | Second-order wave-blocking high-pass filter for tractive power supply and three-phase power supply system |
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| CN102354978A true CN102354978A (en) | 2012-02-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393600A (en) * | 2014-12-08 | 2015-03-04 | 上海坤友电气有限公司 | Third-order resistance wave base high-pass filter device and electric power supply system with same |
| CN105762802A (en) * | 2016-04-26 | 2016-07-13 | 秦臻 | Second-order wave-resistance high-pass filter used for high speed railway |
| CN109742762A (en) * | 2019-03-14 | 2019-05-10 | 辽宁晋驰节能科技有限责任公司 | A kind of Y type chain network passive filter |
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| CN2935585Y (en) * | 2006-07-18 | 2007-08-15 | 戴雄炜 | Harmonic filter |
| CN101083397A (en) * | 2007-05-29 | 2007-12-05 | 东南大学 | Series-parallel isolation passive power filter |
| JP2009089510A (en) * | 2007-09-28 | 2009-04-23 | Nichicon Corp | Ac filter and method of controlling the same |
| CN201331547Y (en) * | 2008-12-15 | 2009-10-21 | 杨振敏 | Combined low-voltage carrier electric energy meter |
| CN202260456U (en) * | 2011-09-01 | 2012-05-30 | 李子晗 | 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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2011
- 2011-09-01 CN CN2011102570580A patent/CN102354978A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2935585Y (en) * | 2006-07-18 | 2007-08-15 | 戴雄炜 | Harmonic filter |
| CN101083397A (en) * | 2007-05-29 | 2007-12-05 | 东南大学 | Series-parallel isolation passive power filter |
| JP2009089510A (en) * | 2007-09-28 | 2009-04-23 | Nichicon Corp | Ac filter and method of controlling the same |
| CN201331547Y (en) * | 2008-12-15 | 2009-10-21 | 杨振敏 | Combined low-voltage carrier electric energy meter |
| CN202260456U (en) * | 2011-09-01 | 2012-05-30 | 李子晗 | 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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| 朱革兰等: "新型谐振电力滤波器研究", 《电力系统及其自动化学报》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393600A (en) * | 2014-12-08 | 2015-03-04 | 上海坤友电气有限公司 | Third-order resistance wave base high-pass filter device and electric power supply system with same |
| CN105762802A (en) * | 2016-04-26 | 2016-07-13 | 秦臻 | Second-order wave-resistance high-pass filter used for high speed railway |
| CN109742762A (en) * | 2019-03-14 | 2019-05-10 | 辽宁晋驰节能科技有限责任公司 | A kind of Y type chain network passive filter |
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Application publication date: 20120215 |