CN109802401A - A kind of through AT contact net for power supplying harmonic detecting and damping unit - Google Patents
A kind of through AT contact net for power supplying harmonic detecting and damping unit Download PDFInfo
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- CN109802401A CN109802401A CN201910165957.4A CN201910165957A CN109802401A CN 109802401 A CN109802401 A CN 109802401A CN 201910165957 A CN201910165957 A CN 201910165957A CN 109802401 A CN109802401 A CN 109802401A
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- matching transformer
- compensation device
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- phase compensation
- traction
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- 238000013016 damping Methods 0.000 title claims abstract description 13
- 230000007812 deficiency Effects 0.000 claims description 9
- 230000001939 inductive effect Effects 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
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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
- Y02E40/30—Reactive power compensation
-
- 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 present invention provides a kind of through AT contact net for power supplying harmonic detecting and damping unit, and described device includes high pressure matching transformer (HMT), AC reactor (L), same-phase compensation device (CPD) and traction matching transformer (TMT).The star end of the high pressure matching transformer HMT connects with A, B, C three-phase of bus respectively, and triangle end is connected with AC reactor；The AC reactor is serially connected between high pressure matching transformer HMT and same-phase compensation device CPD；The same-phase compensation device CPD connects with traction matching transformer TMT primary side, and can have the function that change system load flow to Traction networks Injection Current by traction matching transformer TMT；The traction matching transformer TMT is serially connected in Traction networks.Technical solution provided by the invention is simple and reliable, can effective regulating system trend, improve system reliability.
Description
Technical field
The present invention relates to a kind of harmonic detecting and damping system, the harmonic detecting of specially a kind of tractive power supply system and resistance
Damping system.
Background technique
China's electric railway uses single phase industrial frequency AC system power supply mode, and tractive power supply system takes electric warp from three phase network
Tractive transformer realizes that three-phase-two-phase is transformed to two supply arm of traction substation and provides electric energy.With the quick hair of China railways
Exhibition, existing tractive power supply system gradually expose a series of problems, specifically include that and 1) cross split-phase problem.Each traction substation is adopted
Phase rotation measure is taken to make there are voltage phase difference between adjacent supply arm, each supply arm end is provided with electric split-phase to guarantee not
With the electrical isolation between supply arm.In order to ensure train can pass through electric split phase segment, train is entering at electric split-phase
Non-Electric region before need to drop bow, power-off, reduction of speed slide, if the non-Electric region is set to route uphill way and train is be easy to cause " to stop
Slope " accident；In addition, driver operation difficulty increases when train crosses split-phase, contact net reliability reduces, all by the normal peace to train
Row for the national games causes adverse effect.2) power quality problem.There are close electromagnetism couplings between electrical aspect, Traction networks and locomotive
It closes, the electric energy of pollution is passed to power grid by Traction networks by locomotive load, while the power supply quality of power grid can also generate locomotive
It influences.The power quality problem that this electromagnetic coupling relationship generates, reduces the efficiency and quality of traction power supply, threatens railway
Safe operation.
Cophase supply technology is able to carry out good improvement for power quality problem existing for existing tractive power supply system,
The electric split-phase in traction substation exit is eliminated simultaneously.Since the cophase supply at present for existing traction substation changes
Make, although eliminating the electric split-phase in electric substation exit, between electric substation subregion electric split-phase still remain, electric substation
Between cannot achieve mutual support between energy.Therefore need to propose that a kind of new solution is divided between electric substation to replace
Area electric split-phase.
Summary of the invention
A kind of through AT contact net for power supplying harmonic detecting and damping unit, it is characterised in that: the device includes high pressure
With transformer (HMT), AC reactor (L), same-phase compensation device (CPD) and traction matching transformer (TMT).The high pressure
Star end with transformer HMT connects with A, B, C three-phase of bus respectively, and triangle end is connected with AC reactor；The friendship
Stream reactor is serially connected between high pressure matching transformer HMT and same-phase compensation device CPD；It is described lead same-phase compensation device CPD with
Traction matching transformer TMT primary side connects, and can control its equivalent reactance to have the function that change system load flow；It is described to lead
Draw matching transformer TMT to be serially connected in Traction networks.
Further, the high pressure matching transformer HMT be star delta-connection, high-pressure side is star connection, respectively with bus
ABC three-phase is connected；Low-pressure side is delta connection, is connected with AC reactor L.
Further, the same-phase compensation device CPD be made of IGBT can four quadrant running AC-DC-AC converter,
Middle side can keep the middle dc voltage of each module to stablize by control, and the other side can pass a certain size power
It is defeated, the two-way flow and unilateral harmonic wave and idle compensation function of active power can be completed.
Further, AC reactor L cooperation same-phase compensation device CPD works together, during unsteady flow from it is flat
The effect of sliding electric current.
Further, the traction matching transformer TMT be step-up transformer, by boost in voltage at supply conductor voltage phase
The grade matched, equivalent reactance are controlled by same-phase compensation device CPD.
Further, the compensating coefficient of the device is divided into three kinds of situations, as follows respectively:
When Traction networks inductive reactive power deficiency, same-phase compensation device CPD work, and by traction matching transformer TMT to
Power supply system injects inductive reactive power；
When Traction networks inductive reactive power deficiency, same-phase compensation device CPD is without work；
When Traction networks capacitive reactive power deficiency, same-phase compensation device CPD work, and by traction matching transformer TMT to
Power supply system injects capacitive reactive power.
Detailed description of the invention
Fig. 1 is cophase supply system flexibility subregion schematic diagram；
Fig. 2 is flexible partition system internal structure chart；
Specific embodiment
A kind of through AT contact net for power supplying harmonic detecting and damping unit, it is characterised in that: the device includes high pressure
With transformer (HMT), AC reactor (L), same-phase compensation device (CPD) and traction matching transformer (TMT).The high pressure
Star end with transformer HMT connects with A, B, C three-phase of bus respectively, and triangle end is connected with AC reactor；The friendship
Stream reactor is serially connected between high pressure matching transformer HMT and same-phase compensation device CPD；It is described lead same-phase compensation device CPD with
Traction matching transformer TMT primary side connects, and can control its equivalent reactance to have the function that change system load flow；It is described to lead
Draw matching transformer TMT to be serially connected in Traction networks.
Further, the high pressure matching transformer HMT be star delta-connection, high-pressure side is star connection, respectively with bus
ABC three-phase is connected；Low-pressure side is delta connection, is connected with AC reactor L.
Further, the same-phase compensation device CPD be made of IGBT can four quadrant running AC-DC-AC converter,
Middle side can keep the middle dc voltage of each module to stablize by control, and the other side can pass a certain size power
It is defeated, the two-way flow and unilateral harmonic wave and idle compensation function of active power can be completed.
Further, AC reactor L cooperation same-phase compensation device CPD works together, during unsteady flow from it is flat
The effect of sliding electric current.
Further, the traction matching transformer TMT be step-up transformer, by boost in voltage at supply conductor voltage phase
The grade matched, equivalent reactance are controlled by same-phase compensation device CPD.
Further, the compensating coefficient of the device is divided into three kinds of situations, as follows respectively:
When Traction networks inductive reactive power deficiency, same-phase compensation device CPD work, and by traction matching transformer TMT to
Power supply system injects inductive reactive power；
When Traction networks inductive reactive power deficiency, same-phase compensation device CPD is without work；
When Traction networks capacitive reactive power deficiency, same-phase compensation device CPD work, and by traction matching transformer TMT to
Power supply system injects capacitive reactive power.
Claims (6)
1. a kind of through AT contact net for power supplying harmonic detecting and damping unit, it is characterised in that: the device includes high pressure matching
Transformer (HMT), AC reactor (L), same-phase compensation device (CPD) and traction matching transformer (TMT).The high pressure matching
The star end of transformer HMT connects with A, B, C three-phase of bus respectively, and triangle end is connected with AC reactor；The exchange
Reactor is serially connected between high pressure matching transformer HMT and same-phase compensation device CPD；It is described to lead same-phase compensation device CPD and lead
Draw matching transformer TMT primary side to connect, its equivalent reactance can be controlled to have the function that change system load flow；The traction
Matching transformer TMT is serially connected in Traction networks.
2. a kind of through AT contact net for power supplying harmonic detecting according to claim 1 and damping unit, it is characterised in that:
The high pressure matching transformer HMT is star delta-connection, and high-pressure side is star connection, is connected respectively with bus ABC three-phase；It is low
Pressure side is delta connection, is connected with AC reactor L.
3. a kind of through AT contact net for power supplying harmonic detecting according to claim 1 and damping unit, it is characterised in that:
The same-phase compensation device CPD be made of IGBT can four quadrant running AC-DC-AC converter, wherein side passes through control
The middle dc voltage of each module can be kept to stablize, the other side can transmit a certain size power, can complete wattful power
The two-way flow of rate and unilateral harmonic wave and idle compensation function.
4. a kind of through AT contact net for power supplying harmonic detecting according to claim 1 and damping unit, it is characterised in that:
The AC reactor L cooperation same-phase compensation device CPD works together, plays smooth electric current during unsteady flow.
5. a kind of through AT contact net for power supplying harmonic detecting according to claim 1 and damping unit, it is characterised in that:
The traction matching transformer TMT is step-up transformer, equivalent by boost in voltage at the grade to match with supply conductor voltage
Reactance is controlled by same-phase compensation device CPD.
6. a kind of through AT contact net for power supplying harmonic detecting according to claim 1 and damping unit, it is characterised in that:
When Traction networks inductive reactive power deficiency, same-phase compensation device CPD work, and by drawing matching transformer TMT to power supply
System injects inductive reactive power；
When Traction networks inductive reactive power deficiency, same-phase compensation device CPD is without work；
When Traction networks capacitive reactive power deficiency, same-phase compensation device CPD work, and by drawing matching transformer TMT to power supply
System injects capacitive reactive power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165957.4A CN109802401A (en) | 2019-03-06 | 2019-03-06 | A kind of through AT contact net for power supplying harmonic detecting and damping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165957.4A CN109802401A (en) | 2019-03-06 | 2019-03-06 | A kind of through AT contact net for power supplying harmonic detecting and damping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109802401A true CN109802401A (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910165957.4A Pending CN109802401A (en) | 2019-03-06 | 2019-03-06 | A kind of through AT contact net for power supplying harmonic detecting and damping unit |
Country Status (1)
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| CN (1) | CN109802401A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267676A (en) * | 2020-03-11 | 2020-06-12 | 中车株洲电力机车研究所有限公司 | Train power supply network and traction system for automatic passing through neutral section of subarea thereof |
| WO2023065387A1 (en) * | 2021-10-21 | 2023-04-27 | 株洲中车时代电气股份有限公司 | Flexible interconnection power supply system of electrified railway |
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| JP2004314702A (en) * | 2003-04-14 | 2004-11-11 | Meidensha Corp | Ac feeding system |
| CN103078315A (en) * | 2012-12-28 | 2013-05-01 | 西南交通大学 | Single-phase and three-phase combined in-phase power supply and transformation device |
| CN103311924A (en) * | 2013-06-08 | 2013-09-18 | 西南交通大学 | Single-phase combined co-phased power supply and transformation structure |
| CN104786872A (en) * | 2015-04-16 | 2015-07-22 | 西南交通大学 | Cut-through type cophase power supply system for cascaded input-free and output-free transformers |
| CN106532734A (en) * | 2016-11-25 | 2017-03-22 | 清华大学 | Same-phase traction power supply system suitable for high-speed electrified railway |
| CN108599161A (en) * | 2018-06-20 | 2018-09-28 | 西南交通大学 | A kind of through tractive power supply system |
-
2019
- 2019-03-06 CN CN201910165957.4A patent/CN109802401A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004314702A (en) * | 2003-04-14 | 2004-11-11 | Meidensha Corp | Ac feeding system |
| CN103078315A (en) * | 2012-12-28 | 2013-05-01 | 西南交通大学 | Single-phase and three-phase combined in-phase power supply and transformation device |
| CN103311924A (en) * | 2013-06-08 | 2013-09-18 | 西南交通大学 | Single-phase combined co-phased power supply and transformation structure |
| CN104786872A (en) * | 2015-04-16 | 2015-07-22 | 西南交通大学 | Cut-through type cophase power supply system for cascaded input-free and output-free transformers |
| CN106532734A (en) * | 2016-11-25 | 2017-03-22 | 清华大学 | Same-phase traction power supply system suitable for high-speed electrified railway |
| CN108599161A (en) * | 2018-06-20 | 2018-09-28 | 西南交通大学 | A kind of through tractive power supply system |
Non-Patent Citations (1)
| Title |
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| 杨颢等: "新型贯通同相供电系统建模与运行特性分析", 《铁道科学与工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111267676A (en) * | 2020-03-11 | 2020-06-12 | 中车株洲电力机车研究所有限公司 | Train power supply network and traction system for automatic passing through neutral section of subarea thereof |
| CN111267676B (en) * | 2020-03-11 | 2021-08-24 | 中车株洲电力机车研究所有限公司 | Train power supply network and traction system for automatic passing through neutral section of subarea thereof |
| WO2023065387A1 (en) * | 2021-10-21 | 2023-04-27 | 株洲中车时代电气股份有限公司 | Flexible interconnection power supply system of electrified railway |
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Application publication date: 20190524 |
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| RJ01 | Rejection of invention patent application after publication |