CN103840465B - A kind of locomotive harmonic treating apparatus and system - Google Patents
A kind of locomotive harmonic treating apparatus and system Download PDFInfo
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- CN103840465B CN103840465B CN201410066478.4A CN201410066478A CN103840465B CN 103840465 B CN103840465 B CN 103840465B CN 201410066478 A CN201410066478 A CN 201410066478A CN 103840465 B CN103840465 B CN 103840465B
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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
The invention discloses a kind of Electric Locomotive Harmonic controlling device and system, the device is arranged on locomotive, including：Step-down transformer, its primary side are connected in parallel on the input of traction transformer of locomotive, and the power supply for traction power supply net to be provided is depressured, and the power supply after output buck；Passive filter circuit, it is connected with the secondary of step-down transformer, for filtering out higher hamonic wave caused by locomotive, and then reduces influence of the harmonic wave to traction power supply net caused by locomotive.The simple and reliable, small volume of the present invention, cost are low, safe, can effectively filter out higher hamonic wave caused by this car, avoid infringement of the higher hamonic wave to tractive power supply system and relevant device.
Description
Technical field
The present invention relates to electric and electronic technical field, specifically, is related to a kind of locomotive harmonic treating apparatus and system.
Background technology
China Railway in considerable time always based on DC Transmission electric locomotive, traditional direct current power
Locomotive uses IGCT half-controlling bridged rectifier, and power factor is low, and caused harmonic wave is also mostly 3 times, 5 times, 7 inferior low-order harmonics.
It is increasing new recently as the high speed development of electric railway, and the maturation of AC Drive Technology and extensive use
Type high-power AC transmission power car starts input application, and is increasingly becoming the main force of railway transportation.
AC transmission electric power locomotive uses PWM Semiconductor Converting Technologies, and power factor is high, and low-order harmonic electric current is smaller, but it is produced
Current harmonics frequency band range it is wide, the higher harmonic current of a large amount of more than 20 times can be injected during operation to traction power supply net.And I
What the traditional electric railway traction power supply system of state and its relevant device designed primarily directed to DC Transmission electric locomotive, hand over
Higher hamonic wave caused by stream locomotive may cause the RC loops of the DC Transmission electric locomotive in same traction power supply net to be damaged, very
Vehicle-mounted or electric substation arrester damage, the friendship of the insulation breakdown of mobile unit, electric substation may be extremely caused directly to shield scaling loss and guarantor
The problems such as protection unit malfunctions, it is also possible to cause traction power supply net that resonance occurs, form larger overvoltage and overcurrent.High order
The above mentioned problem that harmonic band comes will seriously endanger the normal order of railway transportation, constrain the expansion fortune of AC transmission electric power locomotive
With, huge challenge is brought to the TD and safe driving of each road bureau, so just need to AC transmission electric power locomotive produce
Raw higher hamonic wave is administered.
The improvement for higher hamonic wave caused by electric locomotive is mainly with the height in electric locomotive traction power supply network at present
Subharmonic passes through ground in traction substation or marshalling yard, in parallel with the feeder line of traction power supply net to administer object
Face harmonic treating apparatus, Concetrated control is carried out to the higher hamonic wave in a certain supply arm.This administration way causes ground harmonic wave
The voltage class of controlling device is higher, relatively large to the capacity requirement of controlling device, and parts selection is difficult, the security of device
Also it is not easy to ensure, and device volume is big.
Based on the above situation, a kind of small volume is needed badly, simple in construction, can to effectively filter out high order caused by electric locomotive humorous
The harmonic treating apparatus of ripple.
The content of the invention
To solve the above problems, the invention provides a kind of locomotive harmonic treating apparatus, come with this to electric locomotive or electricity
Higher hamonic wave is administered caused by EMUs.Described device is arranged in electric locomotive, including：
Step-down transformer, its primary side are connected in parallel on the input of traction transformer of locomotive, for provide traction power supply net
Power supply is depressured, and the power supply after output buck；
Passive filter circuit, it is connected with the secondary of the step-down transformer, for filtering out higher hamonic wave caused by locomotive,
To reduce influence of the harmonic wave caused by the locomotive to the traction power supply net.
According to one embodiment of present invention, the passive filter circuit includes the first passive filter circuit, and it is electrically connected
At the both ends of the step-down transformer secondary, for filtering out the high order in Locomotive Converter switching frequency sideband threshold range
Harmonic wave.
According to one embodiment of present invention, first passive filter circuit includes some first passive filterings in parallel
Branch road, the first passive filtering branch road include any one of item set forth below or several：
Single order passive high three-way filter, second order passive high three-way filter, three rank passive high three-way filters.
According to one embodiment of present invention, the first passive filtering branch road also includes：
First switch unit, it is connected in the first passive filtering branch road, for the first passive filtering branch
Road carries out switching；And/or
First fuse, it is connected in the first passive filtering branch road, for the first passive filtering branch road
Carry out overcurrent protection.
According to one embodiment of present invention, the passive filter circuit also includes the second passive filter circuit, and it is electrically connected
The both ends of the step-down transformer secondary are connected on, for filtering out the height in locomotive auxiliary converter switching frequency sideband threshold range
Subharmonic.
According to one embodiment of present invention, second passive filter circuit includes some second passive filterings in parallel
Branch road, the second passive filtering branch road include any one of item set forth below or several：
Single order passive high three-way filter, second order passive high three-way filter, three rank passive high three-way filters.
According to one embodiment of present invention, the second passive filtering branch road also includes：
Second switch unit, it is connected in the second passive filtering branch road, for the second passive filtering branch
Road carries out switching；And/or
Second fuse, it is connected in the second passive filtering branch road, for the second passive filtering branch road
Carry out overcurrent protection.
According to one embodiment of present invention, the passive filter circuit is additionally operable to filter out the high order of the traction power supply net
Harmonic wave.
Present invention also offers a kind of locomotive harmonic treatment system, the system includes：
Locomotive load；
Traction power supply net, it is connected with the locomotive load, for providing power supply for the locomotive load；
Locomotive harmonic treating apparatus as described above, it is connected in parallel on the input of the locomotive load.
Relative to existing ground harmonic treating apparatus, locomotive harmonic treating apparatus provided by the invention is arranged on exchange and passed
In dynamic electric locomotive or electric EMU, higher harmonic current caused by this car is carried out using simple and reliable passive filter
Administer, the capacity requirement of transformer and wave filter is reduced, so can effectively reduce the volume and cost of whole device.Simultaneously
Under environment under low pressure carry out harmonic wave control can not only make it that the type selecting of passive filter is more convenient, the reliability of returning apparatus and
Security also can more be protected.When the capacity of passive filter is had a surplus, the device can also in traction power supply net by
The higher hamonic wave that other electric locomotives feedback is come is administered.The present apparatus can solve the problem that high in above-mentioned China railways traction power supply net
Problems caused by subharmonic, it is horizontal to improve the overall technology of China locomotive equipment, is that electric locomotive is vehicle-mounted and traction
The safe operation of electrical equipment in electric substation provides guarantee, and base has been established for the enlargement of application of AC transmission electric power locomotive
Plinth, be advantageous to promote the rapid and healthy of China railways.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and obtained in claim and accompanying drawing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing required in technology description to do simple introduction：
Fig. 1 is the structure chart of locomotive harmonic treatment system according to an embodiment of the invention；
Fig. 2 is the circuit diagram of locomotive harmonic treatment system according to an embodiment of the invention.
Embodiment
Embodiments of the present invention are described in detail below with reference to drawings and Examples, and how the present invention is applied whereby
Technological means solves technical problem, and the implementation process for reaching technique effect can fully understand and implement according to this.Need to illustrate
As long as not forming conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other,
The technical scheme formed is within protection scope of the present invention.
Fig. 1 shows the structure chart of locomotive harmonic treatment system in the present embodiment.
As shown in figure 1, Electric Locomotive Harmonic governing system includes traction power supply net 101, harmonic treating apparatus 102 and locomotive
Load 103.Wherein, traction power supply net 101 is connected with locomotive load 103, power supply is provided for locomotive load 103, with driving machine
The operation of car load 103.It should be noted that in different embodiments of the invention, locomotive load 103 can be born for electric locomotive
Carry, or electric EMU loads, and the invention is not restricted to this.
Harmonic treating apparatus 102 includes step-down transformer 104 and passive filter circuit 105, the primary side of step-down transformer 104
The input of traction transformer of locomotive in locomotive load 103 is connected in parallel on, the power supply for traction power supply net 101 to be provided is dropped
Exported after pressure.Passive filter circuit 105 is connected with the secondary of step-down transformer, for filtering out high order caused by locomotive load 103
Harmonic wave, avoid above-mentioned higher hamonic wave feed back in traction power supply net 101 and to other electric locomotives in same supply arm and
Equipment in traction substation or marshalling yard adversely affects.In the present embodiment, passive filter circuit 105 also takes into account idle benefit
Repay function.
The use of step-down transformer 104 can effectively reduce the voltage class of passive filter circuit 105, so be advantageous to carry
The security of high whole device, while the cost of whole device can also be reduced.Used compared to existing harmonic treating apparatus
Active filter circuit carries out harmonic filtration, and the circuit structure of passive filter circuit is simpler reliable, can be efficiently against having
The shortcomings that power filter circuit is complicated, cost is higher.
Existing AC transmission electric power locomotive uses PWM Semiconductor Converting Technologies more, and its caused current harmonics frequency band range is wide, its
In include the higher hamonic wave of a large amount of more than 20 times, by reasonably configuring filter circuit construction and parameter, passive filter circuit
105 effectively can filter out above-mentioned higher hamonic wave, so as to reduce higher hamonic wave caused by locomotive load 103 to traction power supply net
101 influence.
It should be noted that in application process, when the capacity of passive filter circuit 105 also has remaining, it can be with
For filtering out higher hamonic wave present in the power supply of the offer of traction power supply net 101, so as to further improve in traction power supply net 101
The quality of power supply.
Fig. 2 shows the circuit structure diagram of locomotive harmonic treatment system.
As shown in Fig. 2 locomotive load 103 overlaps traction power supply net 101 by pantograph, to receive traction power supply net 101
The power supply of offer.
In the present embodiment, locomotive load 103 includes on-board traction transformer 201, traction convertor 202 and AuCT
203.As shown in Fig. 2 the primary side of on-board traction transformer 201 is connected by pantograph with traction power supply net 101, if secondary includes
Dry tractive winding and assists winding.Wherein, tractive winding is connected with traction convertor 202, to provide electricity for traction convertor 202
Source, assists winding are connected with AuCT 203, and power supply is provided for AuCT 203.
Traction convertor 202 and AuCT 203 can produce substantial amounts of higher hamonic wave during operation, and produce
Raw higher hamonic wave can be fed back in traction power supply net 101 by pantograph, so as to be produced to the power quality for network source of powering
It is raw to influence.
In order to effectively filter out higher hamonic wave caused by traction convertor 202 and AuCT 203, in the present embodiment, nothing
Power filter 105 includes the first passive filter circuit 204 and the second passive filter circuit 205 in parallel.Wherein, first is passive
Filter circuit 204 is used to filter out the higher hamonic wave in the switching frequency sideband preset threshold range of traction convertor 202, and second is passive
Filter circuit 205 is used to filter out the higher hamonic wave in the switching frequency sideband preset threshold range of AuCT 203.By reasonable
The first passive filter circuit 204 and the second passive filter circuit 205 are configured, is become to effectively filter out traction convertor 202 and auxiliary
Flow higher hamonic wave caused by device 203.
As shown in Fig. 2 in the present embodiment, the first passive filter circuit 204 is filtered by first switch unit K1, single order RC high passes
Ripple device and first fuse FU1 concatenations are formed.First switch unit K1 uses contactor, for throwing the filter branch
Cut.The electric current that first fuse FU1 is used to flow through in the filter branch disconnects the filter branch automatically when excessive, so as to reach
The purpose of overcurrent protection is carried out to the filter branch.By reasonably configuring resistance R1 and electric capacity C1 in single order RC high-pass filters
Parameter value so that the frequency of the filter ranges of single order RC high-pass filters and higher hamonic wave caused by traction convertor 202
Scope matches, so as to reach the purpose for effectively filtering out the higher hamonic wave near traction convertor switching frequency sideband.
Second passive filter 205 is gone here and there by second switch unit K2, Second-Order RLC Filter Circuit high-pass filter and second fuse FU2
Connect and form.Wherein second switch unit K2 equally uses contactor, for carrying out switching, second fuse to the filter branch
FU2 carries out overcurrent protection to the filter branch.The circuit that Second-Order RLC Filter Circuit high-pass filter is composed in parallel by resistance R2 and inductance L1 with
Electric capacity C2 concatenations form, by configuring suitable resistance R2, inductance L1 and electric capacity C2 parameter value so that the Second-Order RLC Filter Circuit high pass
The frequency range of the filter range of wave filter and higher hamonic wave caused by AuCT 203 matches, so as to reach effective filter
Except the purpose of the higher hamonic wave near AuCT switching frequency sideband.
Electric locomotive traction current transformer 202 and AuCT 203 produce substantial amounts of higher hamonic wave during operation
Frequency band range is wider, but the higher hamonic wave adverse effect wherein in 500Hz~3000Hz frequency band ranges is main.
So in the present embodiment, it is each in the first passive filter circuit 204 and the second passive filter circuit 205 by reasonably configuring
The parameter value of element so that the first passive filter circuit 204 and the second passive filter circuit 205 can effectively filter out 500Hz~
Higher hamonic wave in 3000Hz frequency band ranges.
It should be noted that in the present embodiment, the first passive filter circuit 204 and the second passive filter circuit 205 respectively wrap
Containing a filter branch, for its purpose merely to preferably illustrating the purpose of the present invention, principle and advantage, it is not to this
The restriction of invention.In actual applications, the first passive filter circuit 204 and the second passive filter circuit 205 are according to filtering purpose
Needs, it may each comprise multiple filter branch, what the high-pass filter included in each filter branch filtered out as needed
Harmonic frequency, the filter form of various reasonable, such as the passive high-pass filtering of single order passive high three-way filter, second order can be selected
One or more in the wave filters such as device, three rank passive high three-way filters.In addition, the difference loaded according to electric locomotive, first
Passive filter circuit and the second passive filter circuit can also only configure one, such as when electric locomotive is without AuCT,
The second passive filter circuit of configuration can not had in passive filter circuit, so enable to the structure of whole device more to close
Reason, cost more have competitiveness.
Relative to existing ground harmonic treating apparatus, locomotive harmonic treating apparatus provided by the invention is arranged on exchange and passed
In dynamic electric locomotive or electric EMU, higher hamonic wave caused by locomotive itself can thus be administered on the spot, be avoided
Higher hamonic wave is exaggerated after entering traction power supply net with the increase of line impedance, so as to influence other locomotives on circuit and set
Standby operation.The present apparatus is administered using simple and reliable passive filter to higher harmonic current caused by this car, dress
The volume put, capacity are relatively small.In addition, the present apparatus is easy to connect, when mounted need not be to the electricity of existing electric locomotive
Do any change in road, it is only necessary to increase some set harmonic treating apparatus according to actual filtering demands, reduce installation and safeguard
Cost.Harmonic treating apparatus provided by the invention can solve the problem that all caused by higher hamonic wave in above-mentioned China railways traction power supply net
More problems, the overall technology level of China's locomotive equipment is improved, help to promote quick, the sound development of China railways.
Although disclosed herein embodiment as above, described content only to facilitate understand the present invention and adopt
Embodiment, it is not limited to the present invention.Any those skilled in the art to which this invention pertains, this is not being departed from
On the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But the scope of patent protection of the present invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (7)
- A kind of 1. locomotive harmonic treating apparatus, it is characterised in that described device is arranged on locomotive, including：Step-down transformer, its primary side are connected in parallel on the input of traction transformer of locomotive, for the power supply for providing traction power supply net It is depressured, and the power supply after output buck；Passive filter circuit, it is connected with the secondary of the step-down transformer, for filtering out higher hamonic wave caused by locomotive, with drop Influence of the harmonic wave caused by the low locomotive to other locomotives in the traction power supply net, the passive filter circuit are used to filter out The higher hamonic wave of more than 20 times in 500Hz to 3000Hz frequency band ranges；Wherein, the passive filter circuit includes the first passive filter circuit and the second passive filter circuit, and described first is passive Filter circuit is connected electrically in the both ends of the step-down transformer secondary, for filtering out Locomotive Converter switching frequency sideband threshold Higher hamonic wave in the range of value, second passive filter circuit are connected electrically in the both ends of the step-down transformer secondary, are used for Filter out the higher hamonic wave in locomotive auxiliary converter switching frequency sideband threshold range.
- 2. device as claimed in claim 1, it is characterised in that first passive filter circuit includes some in parallel first Passive filtering branch road, the first passive filtering branch road include any one of item set forth below or several：Single order passive high three-way filter, second order passive high three-way filter, three rank passive high three-way filters.
- 3. device as claimed in claim 2, it is characterised in that the first passive filtering branch road also includes：First switch unit, it is connected in the first passive filtering branch road, for entering to the first passive filtering branch road Row switching；And/orFirst fuse, it is connected in the first passive filtering branch road, for being carried out to the first passive filtering branch road Overcurrent protection.
- 4. device as claimed in claim 1, it is characterised in that second passive filter circuit includes some in parallel second Passive filtering branch road, the second passive filtering branch road include any one of item set forth below or several：Single order passive high three-way filter, second order passive high three-way filter, three rank passive high three-way filters.
- 5. device as claimed in claim 4, it is characterised in that the second passive filtering branch road also includes：Second switch unit, it is connected in the second passive filtering branch road, for entering to the second passive filtering branch road Row switching；And/orSecond fuse, it is connected in the second passive filtering branch road, for being carried out to the second passive filtering branch road Overcurrent protection.
- 6. such as device according to any one of claims 1 to 5, it is characterised in that the passive filter circuit is additionally operable to filter out The higher hamonic wave of the traction power supply net.
- 7. a kind of locomotive harmonic treatment system, it is characterised in that the system includes：Locomotive load；Traction power supply net, it is connected with the locomotive load, for providing power supply for the locomotive load；Such as locomotive harmonic treating apparatus according to any one of claims 1 to 6, it is connected in parallel on the input of the locomotive load End.
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| CN201410066478.4A CN103840465B (en) | 2014-02-26 | 2014-02-26 | A kind of locomotive harmonic treating apparatus and system |
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| CN201410066478.4A CN103840465B (en) | 2014-02-26 | 2014-02-26 | A kind of locomotive harmonic treating apparatus and system |
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| CN103840465A CN103840465A (en) | 2014-06-04 |
| CN103840465B true CN103840465B (en) | 2018-01-09 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846430B (en) * | 2016-05-31 | 2018-11-09 | 国网北京市电力公司 | The passive filter of 110kV or more high-pressure systems and its determining method and apparatus |
| CN106208057B (en) * | 2016-07-26 | 2018-07-06 | 四川汇友电气有限公司 | Traction substation higher hamonic wave single order high-pass filtering system |
| CN108123758A (en) * | 2016-11-29 | 2018-06-05 | 中车大同电力机车有限公司 | Rail traffic vehicles low-frequency disturbance measures and filtering method |
| CN110871816A (en) * | 2018-08-29 | 2020-03-10 | 中车大同电力机车有限公司 | Electric locomotive filtering system |
| CN111917096A (en) * | 2019-06-13 | 2020-11-10 | 中车大同电力机车有限公司 | Locomotive pantograph control system and locomotive |
| CN117096879B (en) * | 2023-07-12 | 2024-04-23 | 上海应用技术大学 | Motor train unit multi-class working condition harmonic wave treatment method based on C-type filter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917011A (en) * | 2010-09-06 | 2010-12-15 | 东南大学 | Power quality comprehensive control method and device for electric railway traction power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100336276C (en) * | 2003-09-25 | 2007-09-05 | 西安交通大学 | Parallel mixed power filter for electrified railway |
| CN103138622B (en) * | 2011-11-22 | 2015-11-25 | 永济新时速电机电器有限责任公司 | Secondary power system and electric locomotive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917011A (en) * | 2010-09-06 | 2010-12-15 | 东南大学 | Power quality comprehensive control method and device for electric railway traction power supply system |
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