CN103840465A - Locomotive harmonic control device and system - Google Patents
Locomotive harmonic control device and system Download PDFInfo
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- CN103840465A CN103840465A CN201410066478.4A CN201410066478A CN103840465A CN 103840465 A CN103840465 A CN 103840465A CN 201410066478 A CN201410066478 A CN 201410066478A CN 103840465 A CN103840465 A CN 103840465A
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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 an electric locomotive harmonic control device and system. The electric locomotive harmonic control device is installed on a locomotive, and comprises a step-down transformer and a passive filter circuit, wherein the primary side of the step-down transformer is connected to the input end of a traction transformer of the locomotive in parallel, the step-down transformer is used for carrying out voltage reduction on a power source provided by a traction power supply network and outputting the power source with the reduced voltage, the passive filter circuit is connected with the secondary side of the step-down transformer and used for filtering out higher harmonics generated by the locomotive, and then influence of the harmonics generated by the locomotive on the traction power supply network is reduced. The electric locomotive harmonic control device and system are simple, reliable, small in size, low in cost and high in safety, can effectively filter out the higher harmonics generated by the locomotive, and avoid damage caused by the higher harmonics to a traction power supply system and related devices.
Description
Technical field
The present invention relates to electric and electronic technical field, specifically, relate to a kind of locomotive harmonic treating apparatus and system.
Background technology
China Railway is always taking DC Transmission electric locomotive as main in considerable time, and traditional continuous current locomotive adopts thyristor half-controlling bridged rectifier, and power factor is low, and the harmonic wave of generation mostly also is 3 times, 5 times, 7 inferior low-order harmonics.In recent years along with the high speed development of electric railway, and the maturation of AC Drive Technology and extensive use, increasing novel high-power AC transmission electric power locomotive starts to drop into application, and becomes gradually the main force of railway transportation.
AC transmission electric power locomotive adopts PWM Semiconductor Converting Technology, and power factor is high, and low-order harmonic electric current is less, but the current harmonics frequency band range of its generation is wide, when operation, can inject a large amount of more than 20 times higher harmonic currents to traction power supply net.And traditional electric railway traction power supply system and the relevant device thereof of China mainly designs for DC Transmission electric locomotive; the high order harmonic component that alternating current electric locomotive produces may cause the RC loop of the DC Transmission electric locomotive in same traction power supply net to be damaged; even may cause the lightning arrester damage of vehicle-mounted or electric substation, the insulation breakdown of mobile unit, the friendship of electric substation directly to shield the problem such as scaling loss and protective device misoperation; also may cause traction power supply net generation resonance, form larger overvoltage and overcurrent.The problems referred to above that high order harmonic component is brought are by the normal order of serious harm railway transportation, restrict the enlargement of application of AC transmission electric power locomotive, TD and safe driving to each road bureau have brought huge challenge, so the high order harmonic component that just need to produce AC transmission electric power locomotive is administered.
The improvement of the high order harmonic component producing for electric locomotive is at present mainly taking the high order harmonic component in electric locomotive traction power supply network as administering object, by being arranged on ground harmonic treating apparatus in traction substation or marshalling yard, in parallel with the feeder line of traction power supply net, the high order harmonic component in a certain supply arm is concentrated to improvement.This administration way makes the electric pressure of ground harmonic treating apparatus higher, relatively large to the capacity requirement of controlling device, parts selection difficulty, and the fail safe of device is also not easy to ensure, and device volume is large.
Based on above-mentioned situation, need the harmonic treating apparatus of a kind of volume high order harmonic component little, simple in structure, that effectively filtering electric locomotive produces badly.
Summary of the invention
For addressing the above problem, the invention provides a kind of locomotive harmonic treating apparatus, the high order harmonic component with this to electric locomotive or the generation of electric motor car group is administered.Described device is arranged in electric locomotive, comprising:
Step-down transformer, its former limit is connected in parallel on the input of traction transformer of locomotive, carries out step-down for the power supply that traction power supply net is provided, and power supply after output buck;
Passive filter circuit, it is connected with the secondary of described step-down transformer, and the high order harmonic component producing for filtering locomotive, to reduce the impact on described traction power supply net of harmonic wave that described locomotive produces.
According to one embodiment of present invention, described passive filter circuit comprises the first passive filter circuit, and it is connected electrically in the two ends of described step-down transformer secondary, for the high order harmonic component in filtering Locomotive Converter switching frequency sideband threshold range.
According to one embodiment of present invention, described the first passive filter circuit comprises the first passive filtering branch road of some parallel connections, and described the first passive filtering branch road comprises any one in following lising 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, described the first passive filtering branch road also comprises:
The first switch element, it is connected in described the first passive filtering branch road, for described the first passive filtering branch road is carried out to switching; And/or,
The first fuse, it is connected in described the first passive filtering branch road, for described the first passive filtering branch road is carried out to overcurrent protection.
According to one embodiment of present invention, described passive filter circuit also comprises the second passive filter circuit, and it is connected electrically in the two ends of described step-down transformer secondary, for the high order harmonic component in filtering locomotive auxiliary converter switching frequency sideband threshold range.
According to one embodiment of present invention, described the second passive filter circuit comprises the second passive filtering branch road of some parallel connections, and described the second passive filtering branch road comprises any one in following lising 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, described the second passive filtering branch road also comprises:
Second switch unit, it is connected in described the second passive filtering branch road, for described the second passive filtering branch road is carried out to switching; And/or,
The second fuse, it is connected in described the second passive filtering branch road, for described the second passive filtering branch road is carried out to overcurrent protection.
According to one embodiment of present invention, described passive filter circuit is also for the high order harmonic component of traction power supply net described in filtering.
The present invention also provides a kind of locomotive harmonic wave control system, and described system comprises:
Locomotive load;
Traction power supply net, it is connected with described locomotive load, is used to described locomotive load that power supply is provided;
Locomotive harmonic treating apparatus as above, it is connected in parallel on the input of described locomotive load.
With respect to existing ground harmonic treating apparatus, locomotive harmonic treating apparatus provided by the invention is arranged in AC transmission electric power locomotive or electric motor car group, the higher harmonic current that adopts simple and reliable passive filter to produce this car is administered, the capacity requirement of transformer and filter is reduced, can effectively reduce like this volume and the cost of whole device.Under environment under low pressure, carry out harmonic wave control and not only can make the type selecting of passive filter more convenient, the reliability of returning apparatus and fail safe also more can be protected simultaneously.In the time that the capacity of passive filter is had a surplus, this device can also be administered the high order harmonic component of being come by other electric locomotive feedbacks in traction power supply net.This device can solve the problems that in above-mentioned China railways traction power supply net, high order harmonic component causes, improve the overall technology level of China's locomotive, the safe operation of power consumption equipment with in traction substation vehicle-mounted for electric locomotive provides guarantee, lay a good foundation for the enlargement of application of AC transmission electric power locomotive, be conducive to promote the rapid and healthy of China railways.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in specification, claims and accompanying drawing.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, will do simple introduction to needed accompanying drawing in embodiment or description of the Prior Art below:
Fig. 1 is the structure chart of locomotive harmonic wave control system according to an embodiment of the invention;
Fig. 2 is the circuit diagram of locomotive harmonic wave control system according to an embodiment of the invention.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each feature in each embodiment and each embodiment in the present invention can mutually combine, and the technical scheme forming is all within protection scope of the present invention.
Fig. 1 shows the structure chart of locomotive harmonic wave control system in the present embodiment.
As shown in Figure 1, Electric Locomotive Harmonic governing system comprises 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, for locomotive load 103 provides power supply, to drive locomotive load 103 to move.It should be noted that, in different embodiments of the invention, locomotive load 103 can be electric locomotive load, also can, for the load of electric motor car group, the invention is not restricted to this.
Harmonic treating apparatus 102 comprises step-down transformer 104 and passive filter circuit 105, and the former limit of step-down transformer 104 is connected in parallel on the input of traction transformer of locomotive in locomotive load 103, carries out exporting after step-down for the power supply that traction power supply net 101 is provided.Passive filter circuit 105 is connected with the secondary of step-down transformer, the high order harmonic component producing for filtering locomotive load 103, avoids above-mentioned high order harmonic component to feed back in traction power supply net 101 and causes adverse effect to other electric locomotives in same supply arm and the equipment in traction substation or marshalling yard.In the present embodiment, passive filter circuit 105 is also taken into account no-power compensation function.
The use of step-down transformer 104 can effectively reduce the electric pressure of passive filter circuit 105, the fail safe that is conducive to like this improve whole device, and the while can also be reduced the cost of whole device.Adopt active filter circuit to carry out harmonic filtration compared to existing harmonic treating apparatus, the circuit structure of passive filter circuit is more simple and reliable, can effectively overcome active filter circuit circuit complexity, shortcoming that cost is higher.
Existing AC transmission electric power locomotive adopts PWM Semiconductor Converting Technology more, the current harmonics frequency band range of its generation is wide, wherein include a large amount of 20 above high order harmonic components, by reasonably configuring filter circuit construction and parameter, passive filter circuit 105 can be effectively by above-mentioned high order harmonic component filtering, thereby reduces the impact on traction power supply net 101 of high order harmonic component that locomotive load 103 produces.
It should be noted that, in application process, in the time that the capacity of passive filter circuit 105 remains in addition, the high order harmonic component that its power supply that can also be used for filtering traction power supply net 101 and provide exists, thus further improve the quality of power supply in traction power supply net 101.
Fig. 2 shows the circuit structure diagram of locomotive harmonic wave control system.
As shown in Figure 2, locomotive load 103 overlaps traction power supply net 101 by pantograph, the power supply providing to receive traction power supply net 101.
In the present embodiment, locomotive load 103 comprises on-board traction transformer 201, traction convertor 202 and AuCT 203.As shown in Figure 2, the former limit of on-board traction transformer 201 is connected with traction power supply net 101 by pantograph, and secondary comprises some tractive windings and auxiliary winding.Wherein, tractive winding is connected with traction convertor 202, and for traction convertor 202 provides power supply, auxiliary winding is connected with AuCT 203, for AuCT 203 provides power supply.
For the high order harmonic component that effectively filtering traction convertor 202 and AuCT 203 produce, in the present embodiment, passive filter circuit 105 comprises the first passive filter circuit 204 and the second passive filter circuit 205 in parallel.Wherein, the first passive filter circuit 204 is for the high order harmonic component within the scope of filtering traction convertor 202 switching frequency sideband predetermined threshold value, and the second passive filter circuit 205 is for the high order harmonic component within the scope of filtering AuCT 203 switching frequency sideband predetermined threshold value.By reasonable disposition the first passive filter circuit 204 and the second passive filter circuit 205, carry out the high order harmonic component that effective filtering traction convertor 202 and AuCT 203 produce.
As shown in Figure 2, in the present embodiment, the first passive filter circuit 204 is made up of the first switch element K1, single order RC high pass filter and the first fuse FU1 serial connection.The first switch element K1 adopts contactor, for this filter branch is carried out to switching.The first fuse FU1 disconnects this filter branch when excessive for the electric current that flows through at this filter branch automatically, thereby reaches the object of this filter branch being carried out to overcurrent protection.By reasonably configuring the parameter value of resistance R 1 and capacitor C 1 in single order RC high pass filter, the filter range of this single order RC high pass filter and the frequency range of the high order harmonic component that traction convertor 202 produces are matched, thereby reach near the object of the high order harmonic component effective filtering traction convertor switching frequency sideband.
The second passive filter 205 is formed by second switch unit K2, Second-Order RLC Filter Circuit high pass filter and the second fuse FU2 serial connection.Wherein second switch unit K2 adopts contactor equally, and for this filter branch is carried out to switching, the second fuse FU2 carries out overcurrent protection to this filter branch.The circuit that Second-Order RLC Filter Circuit high pass filter is composed in parallel by resistance R 2 and inductance L 1 is connected in series and forms with capacitor C 2, by configuring the parameter value of suitable resistance R 2, inductance L 1 and capacitor C 2, the filter range of this Second-Order RLC Filter Circuit high pass filter and the frequency range of the high order harmonic component that AuCT 203 produces are matched, thereby reach near the object of the high order harmonic component effective filtering AuCT switching frequency sideband.
To produce a large amount of high order harmonic component frequency band ranges wider in the process of operation for electric locomotive traction current transformer 202 and AuCT 203, but wherein the high order harmonic component adverse effect in 500Hz～3000Hz frequency band range is main.So in the present embodiment, by reasonably configuring the parameter value of each element in the first passive filter circuit 204 and the second passive filter circuit 205, make the first passive filter circuit 204 and the second passive filter circuit 205 high order harmonic component in can effective filtering 500Hz～3000Hz frequency band range.
It should be noted that, in the present embodiment, the first passive filter circuit 204 and the second passive filter circuit 205 respectively comprise a filter branch, and its object is only that it is not limitation of the invention in order to set forth better object of the present invention, principle and advantage.In actual applications, the first passive filter circuit 204 and the second passive filter circuit 205 are according to the needs of filtering object, it all can comprise multiple filter branch, the high pass filter comprising in each filter branch is the harmonic frequency of filtering as required, can select the filter form of various reasonable, such as, in the filters such as single order passive high three-way filter, second order passive high three-way filter, three rank passive high three-way filters one or more.In addition, according to the difference of electric locomotive load, the first passive filter circuit and the second passive filter circuit can also only configure one, for example, when electric locomotive is during without AuCT, in passive filter circuit, can configure the second passive filter circuit, can make like this structure of whole device more reasonable, cost has competitiveness more.
With respect to existing ground harmonic treating apparatus, locomotive harmonic treating apparatus provided by the invention is arranged in AC transmission electric power locomotive or electric motor car group, the high order harmonic component that so just can produce locomotive self is administered on the spot, after having avoided high order harmonic component to enter traction power supply net, be exaggerated along with the increase of line impedance, thereby affect the operation of other locomotives and equipment on circuit.The higher harmonic current that this device adopts simple and reliable passive filter to produce this car is administered, and volume, the capacity relative of device are less.In addition, this device easy to connect, does not need the circuit of existing electric locomotive to do any change when mounted, only need to, according to the some cover harmonic treating apparatus of actual filtering increase in demand, reduce installation and maintenance cost.Harmonic treating apparatus provided by the invention can solve the problems that in above-mentioned China railways traction power supply net, high order harmonic component causes, has improved the overall technology level of China's locomotive, contributes to promote quick, the sound development of China railways.
Although the disclosed execution mode of the present invention as above, the execution mode that described content just adopts for the ease of understanding the present invention, not in order to limit the present invention.Technical staff in any the technical field of the invention; do not departing under the prerequisite of the disclosed spirit and scope of the present invention; can do any amendment and variation what implement in form and in details; but scope of patent protection of the present invention, still must be as the criterion with the scope that appending claims was defined.
Claims (9)
1. a locomotive harmonic treating apparatus, is characterized in that, described device is arranged on locomotive, comprising:
Step-down transformer, its former limit is connected in parallel on the input of traction transformer of locomotive, carries out step-down for the power supply that traction power supply net is provided, and power supply after output buck;
Passive filter circuit, it is connected with the secondary of described step-down transformer, and the high order harmonic component producing for filtering locomotive, to reduce the impact on described traction power supply net of harmonic wave that described locomotive produces.
2. device as claimed in claim 1, it is characterized in that, described passive filter circuit comprises the first passive filter circuit, and it is connected electrically in the two ends of described step-down transformer secondary, for the high order harmonic component in filtering Locomotive Converter switching frequency sideband threshold range.
3. device as claimed in claim 2, is characterized in that, described the first passive filter circuit comprises the first passive filtering branch road of some parallel connections, and described the first passive filtering branch road comprises any one in following lising or several:
Single order passive high three-way filter, second order passive high three-way filter, three rank passive high three-way filters.
4. device as claimed in claim 3, is characterized in that, described the first passive filtering branch road also comprises:
The first switch element, it is connected in described the first passive filtering branch road, for described the first passive filtering branch road is carried out to switching; And/or,
The first fuse, it is connected in described the first passive filtering branch road, for described the first passive filtering branch road is carried out to overcurrent protection.
5. the device as described in any one in claim 1～4, it is characterized in that, described passive filter circuit also comprises the second passive filter circuit, and it is connected electrically in the two ends of described step-down transformer secondary, for the high order harmonic component in filtering locomotive auxiliary converter switching frequency sideband threshold range.
6. device as claimed in claim 5, is characterized in that, described the second passive filter circuit comprises the second passive filtering branch road of some parallel connections, and described the second passive filtering branch road comprises any one in following lising or several:
Single order passive high three-way filter, second order passive high three-way filter, three rank passive high three-way filters.
7. device as claimed in claim 6, is characterized in that, described the second passive filtering branch road also comprises:
Second switch unit, it is connected in described the second passive filtering branch road, for described the second passive filtering branch road is carried out to switching; And/or,
The second fuse, it is connected in described the second passive filtering branch road, for described the second passive filtering branch road is carried out to overcurrent protection.
8. the device as described in any one in claim 1～7, is characterized in that, described passive filter circuit is also for the high order harmonic component of traction power supply net described in filtering.
9. a locomotive harmonic wave control system, is characterized in that, described system comprises:
Locomotive load;
Traction power supply net, it is connected with described locomotive load, is used to described locomotive load that power supply is provided;
Locomotive harmonic treating apparatus as described in any one in claim 1～8, it is connected in parallel on the input of described locomotive load.
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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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| CN103840465B CN103840465B (en) | 2018-01-09 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846430A (en) * | 2016-05-31 | 2016-08-10 | 国网北京市电力公司 | Passive filter for over 110kV high-voltage system and determination method and device of passive filter |
| CN106208057A (en) * | 2016-07-26 | 2016-12-07 | 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 |
| CN117096879A (en) * | 2023-07-12 | 2023-11-21 | 上海应用技术大学 | Motor train unit multi-class working condition harmonic wave treatment method based on C-type filter |
| 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 |
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| 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 |
| CN103138622A (en) * | 2011-11-22 | 2013-06-05 | 永济新时速电机电器有限责任公司 | Auxiliary power supply system and electric locomotive |
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| CN1527456A (en) * | 2003-09-25 | 2004-09-08 | �Ϻ���ͨ��ѧ | Parallel mixed power filter for electrified railway |
| 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846430A (en) * | 2016-05-31 | 2016-08-10 | 国网北京市电力公司 | Passive filter for over 110kV high-voltage system and determination method and device of passive filter |
| 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 |
| CN106208057A (en) * | 2016-07-26 | 2016-12-07 | 四川汇友电气有限公司 | Traction substation higher hamonic wave single order high-pass filtering system |
| 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 |
| CN117096879A (en) * | 2023-07-12 | 2023-11-21 | 上海应用技术大学 | Motor train unit multi-class working condition harmonic wave treatment method based on C-type filter |
| 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 |
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