CN103326374B - A kind of electric railway AT tractive power supply system 55kV static passive compensation device - Google Patents
A kind of electric railway AT tractive power supply system 55kV static passive compensation device Download PDFInfo
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- CN103326374B CN103326374B CN201310232415.7A CN201310232415A CN103326374B CN 103326374 B CN103326374 B CN 103326374B CN 201310232415 A CN201310232415 A CN 201310232415A CN 103326374 B CN103326374 B CN 103326374B
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- 230000003068 static effect Effects 0.000 title claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 14
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- 238000012216 screening Methods 0.000 claims abstract description 6
- 230000003252 repetitive effect Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 230000005622 photoelectricity Effects 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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
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Abstract
The present invention relates to electric railway field, be specifically related to a kind of electric railway AT tractive power supply system 55kV static passive compensation device.This device comprises Controlled Reactor TCR branch road in parallel and filtering FC branch road, and Controlled Reactor TCR branch road and the equal direct screening of filtering FC branch road are under 55kV bus; Between the contact wire that this device is connected in parallel on AT electric power system railway dragging net and positive feeder; AT electric power system comprises 55kV traction transformer, railway dragging net, contact wire and positive feeder; One output on 55kV traction transformer time limit is connected with the contact wire of railway dragging net, and another output is connected with the positive feeder of railway dragging net.The present invention is by adopting the static passive compensation device under direct screening 55kV electric pressure, the power quality controlling effect of the dynamic compensating device played to greatest extent, extend traction transformer useful life, improve the stability of electric power system, the design of thyristor controlled series compensation and heat pipe cooling heat dissipation technology, ensure that the stability that SVC device is run and fail safe.
Description
Technical field
The present invention relates to electric railway field, be specifically related to a kind of electric railway AT tractive power supply system 55kV static passive compensation device.
Background technology
Electric railway can produce the power quality problems such as harmonic wave, three-phase imbalance, low power factor in running.Each state all pays much attention to the improvement to electrified railway electric energy quality for this reason.When heavy haul transport, train load is large, and quality of power supply situation is more severe, at this moment more important with control to the improvement of the quality of power supply.The SVC being arranged on traction substation can be used for supporting supply conductor voltage, to improve the driving power of electric iron; Due to the aspect such as technology and cost, the SVC device adopted in the current electric iron electric power system of China is mainly connected in parallel on the single-phase SVC structure of drawing electric network, or is referred to as direct hanging type SVC.The electric pressure of the conventional direct hanging type SVC device of current China electric railway is generally 27.5kV, is connected in parallel between the contact wire (T line) of railway dragging net and positive feeder (F line).Under AT supply power mode, supply power voltage between the TF line of Traction networks is promoted to 55kV by autotransformer.Current domestic AT electric power system SVC compensates valve body and is 27.5kV structure, is connected between TN line or between FN line, improves effect poor to supply arm voltage.Therefore, the direct hanging type SVC device of conventional voltage grade (27.5kV) can not meet the heavy haul railway electric power system under AT supply power mode.Be limited to state-of-art, in domestic heavy haul railway power quality controlling, be not also directly connected on the SVC compensation arrangement of 55kV electric pressure.
Summary of the invention
For AT traction substation 55kV electric power system and the power consumption characteristics of electric railway and the power quality problem of existence, the object of this invention is to provide a kind of electric railway AT tractive power supply system 55kV static passive compensation device, solve based on the heavy haul railway power quality problem under AT supply power mode, effectively can improve the low power factor problem of electric railway, stable power-supplying arm terminal voltage, for railway security reliability service provides strong support.
The object of the invention is to adopt following technical proposals to realize:
The invention provides a kind of electric railway AT tractive power supply system 55kV static passive compensation device, described device comprises Controlled Reactor TCR branch road in parallel and filtering FC branch road, its improvements are, described Controlled Reactor TCR branch road and the equal direct screening of filtering FC branch road are under 55kV bus; Between the contact wire that described device is connected in parallel on AT electric power system railway dragging net and positive feeder;
Described AT electric power system comprises 55kV traction transformer, railway dragging net, contact wire and positive feeder; One output on 55kV traction transformer time limit is connected with the contact wire of railway dragging net, and another output is connected with the positive feeder of railway dragging net.
Wherein, described Controlled Reactor TCR branch road comprises thyristor controlled series compensation and the reactor of series connection; Described reactor arranges the two ends with thyristor controlled series compensation respectively; Described filtering FC branch road comprises reactor and the capacitive filter of series connection, between reactor and capacitive filter, be connected with lightning arrester; The quantity of described filtering FC branch road is 2.
Wherein, described thyristor controlled series compensation adopts horizontal type structure, comprises the thyristor valve string of series connection, radiator, dynamic voltage-balancing, static state voltage equipoise circuit, triggers and measure loop, overvoltage trigger protection loop and main body frame; Described dynamic voltage-balancing, static state voltage equipoise circuit, triggering and measure loop and overvoltage trigger protection loop are integrated on thyristor electronic board; Described thyristor valve string, radiator and thyristor electronic board are installed on main body frame.
Wherein, often organize thyristor valve string and connected by two thyristor inverse parallels, when installing thyristor valve string, the string number of every phase is 40 strings;
In described thyristor valve string, the redundant digit of series thyristor is 2, when often have mutually 2 only reach following thyristor break down time, thyristor controlled series compensation can normally run.
Wherein, described radiator adopts heat pipe heat radiation, and described heat pipe is the cylindrical tube of vacuum.
Wherein, described main body frame, for overcoming the electrostatic induction of thyristor controlled series compensation and anti-interference, described main body frame is provided with line installing hole.
Wherein, described thyristor adopts dynamic repetitive peak voltage 5600V, and dynamic not repetitive peak voltage 6500V type thyristor.
Wherein, the triggering mode of described thyristor controlled series compensation is photoelectricity triggering mode, and each thyristor in described thyristor controlled series compensation is provided with Overvoltage Protection.
Wherein, the stack combinations mode of the described thyristor controlled series compensation arrangement that comprises side-by-side horizontal arrangement and superpose up and down; When thyristor controlled series compensation stack combinations, between valve group, composite insulator is being installed between two.
Compared with the prior art, the beneficial effect that the present invention reaches is:
1. the key technology that the present invention becomes reactive power compensation from electric railway AT for electrical haulage is set about, consider the special electric power system situation of AT traction substation comprehensively, and conventional 27.5kV static passive compensation device (SVC, StaticVarCompensator) drawback under AT supply power mode, by novel topological structure static passive compensation device under employing direct screening 55kV electric pressure, the power quality controlling effect of the dynamic compensating device played to greatest extent, extend AT transformer useful life, improve the stability of electric power system.The design of the thyristor controlled series compensation of novel topological structure and heat pipe cooling heat dissipation technology, ensure that the stability that SVC device is run and fail safe.
2. draw for electric railway AT and become power quality controlling, change tradition traction and become the limitation that reactive-load compensation equipment is benchmark with 27.5kV bus, extend AT transformer useful life, in N line, no current flows through over the ground, make SVC device regulation voltage more direct, power quality controlling effect is more obvious simultaneously.
3. be directed to electric railway AT traction change 55kV bus and carry out dynamic reactive adjustment, regulation voltage and power quality controlling are more direct, make full use of the dynamic compensation ability of reactive-load compensation equipment.
4. for 55kV electric power system, adopt horizontal thyristor controlled series compensation structure, be easy to observe and maintenance; Valve yoke structure can overcome electrostatic induction preferably, and has stronger antijamming capability.
5.55kV novel topological structure thyristor controlled series compensation adopts photoelectricity triggering mode; thyristor arranges BOD protection; photoelectricity triggering mode utilizes Fiber isolation height electronegative potential; connect without any cable; there is not any high-power high-frequency signal generating loop to send can or directly trigger for electromagnetism; there is the advantages such as safety, insulation isolation is reliable, noiseless, and not by the impact of station power-supply fluctuation, the false triggering that Dynamic System and disturbance etc. cause can be prevented.
6.55kV novel topological structure thyristor valve adopts the dynamic not repetitive peak voltage 6500V type thyristor of thyristor, 40 strings/phase, the Redundancy Design of positive and negative anti-parallel connection.
7. adopt the 55kV New Topological thyristor controlled series compensation structural design of heat pipe heat radiation, by the speed be exceedingly fast, heat should can be led the top of heat pipe in this way from the bottom of heat pipe.This splendid heat conductivility, can make heat can not pile up at heating position, but be dispersed into equably on each radiating fin of radiator, greatly improve the heat conductivility of fin.
8., based on the valve group heat pipe heat radiation cooling technology of 55kV novel topological structure thyristor controlled series compensation, good heat dissipation effect, noise is low, long service life, there is not the seepy question of water-filled radiator, and huge water circulation system.Adopting heat pipes for heat transfer speed is 100 times of copper, can meet the cooling requirements that all high-power electronic components run.
Accompanying drawing explanation
Fig. 1 is electric railway AT tractive power supply system 55kV static passive compensation device topology diagram provided by the invention;
Fig. 2 is static passive compensation device (SVC, StaticVarCompensator) thyristor controlled series compensation front view provided by the invention;
Fig. 3 is static passive compensation device thyristor controlled series compensation vertical view provided by the invention;
Fig. 4 is static passive compensation device thyristor controlled series compensation right view provided by the invention;
Fig. 5 is static passive compensation device thyristor controlled series compensation left view provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Electric railway AT tractive power supply system 55kV static passive compensation device topology diagram provided by the invention as shown in Figure 1, comprise Controlled Reactor TCR branch road in parallel and filtering FC branch road, its improvements are, described Controlled Reactor TCR branch road and the equal direct screening of filtering FC branch road are under 55kV bus; Between the contact wire that described device is connected in parallel on AT electric power system railway dragging net and positive feeder; AT electric power system comprises 55kV traction transformer, railway dragging net, contact wire and positive feeder; One output on 55kV traction transformer time limit is connected with the contact wire of railway dragging net, and another output is connected with the positive feeder of railway dragging net.
Present invention employs the mode of the direct hanging type in parallel new topological structure 55kVSVC device between transformer station TF line of powering at AT, SVC device adopts TCR+FC pattern, effectively can improve the low power factor problem of electric railway, stable power-supplying arm terminal voltage, for railway security reliability service provides strong support.
Controlled Reactor TCR branch road comprises thyristor controlled series compensation and the reactor of series connection; Reactor arranges the two ends with thyristor controlled series compensation respectively; Filtering FC branch road comprises reactor and the capacitive filter of series connection, between reactor and capacitive filter, be connected with lightning arrester; The quantity of described filtering FC branch road is 2.
Thyristor controlled series compensation adopts horizontal type structure, comprises the thyristor valve string of series connection, radiator, dynamic voltage-balancing, static state voltage equipoise circuit, triggers and measure loop, overvoltage trigger protection loop and main body frame; Described dynamic voltage-balancing, static state voltage equipoise circuit, triggering and measure loop and overvoltage trigger protection loop are integrated on thyristor electronic board; Described thyristor valve string, radiator and thyristor electronics (TE-ThyristorElectronics) plate are installed on main body frame.
The technical scope that thyristor valve body design relates to is extensive, comprises many-sided technology such as semiconductor device art, solid and fluid stress analysis, electromagnetic compatibility, High-Voltage Insulation cooperation, mechanical structure.Each series-connected stage of thyristor valve string adopts two thyristors to be connected in antiparallel, and realizes controllable conduction in each comfortable half cycle.Thyristor controlled series compensation is the core component of SVC device, can be regulated continuously impedance thus the idle output of control SVC by the Trigger Angle of control valve.
The horizontal type structure of thyristor controlled series compensation is easy to observe and maintenance; Valve yoke structure can overcome electrostatic induction preferably, and has stronger antijamming capability.As shown in Figure 2-5, design parameter is as follows for static passive compensation device thyristor electrical design schematic diagram:
1) thyristor connected mode: 40 strings/phase, positive and negative anti-parallel connection;
2) triggering mode: photoelectricity triggering mode; Photoelectricity triggering mode utilizes Fiber isolation height electronegative potential, connect without any cable, there is not any high-power high-frequency signal generating loop to send can or directly trigger for electromagnetism, there is the advantages such as safety, insulation isolation is reliable, noiseless, and not by the impact of station power-supply fluctuation, the false triggering that Dynamic System and disturbance etc. cause can be prevented;
3) thyristor arranges BOD protection, provides urgent trigger impulse can to thyristor when overvoltage or triggerless pulse;
4) in the design of thyristor valve, the redundant digit of series thyristor is 2, when often having 2 to only reach following element failure mutually, device SVC still can normally run, thyristor valve has good du/dt, di/dt characteristic, thyristor valve performance and defencive function select requirement when considering all redundancy thyristor short circuits;
5) thyristor dynamic repetitive peak voltage VRRM/VDRM:5600V;
6) thyristor dynamically not repetitive peak voltage VRSM/VDSM:6500V;
7) thyristor average current ITAVM:350A(ambient temperature Tcase=70 DEG C);
8) the highest permission working junction temperature of thyristor: 125 DEG C.
Radiator of the present invention adopts heat pipe, and it is the cylindrical tube of vacuum, and central a part of space is filled with the liquid being easy to evaporate.Remain vacuum state in pipe, and the evaporating temperature of central liquid is close with ambient temperature.After heat is absorbed by volatile layer, liquid is just heated to boiling point rapidly, then just comes to life, produce steam, steam rises to cooling layer, and after heat is released, steam regelation becomes drop, owing to being subject to Action of Gravity Field or other internal action, drop comes back to volatile layer, continues to be evaporated, and is then cooled, this just forms a circulation gone round and begun again, and what promote this circulation is exactly thermal source.Water--the phase transformation reaction between gas, makes the heat conduction efficiency of heat pipe than common fine copper height decades of times, even hundreds of times.By the speed be exceedingly fast, heat should can be led the top of heat pipe in this way from the bottom of heat pipe.This splendid heat conductivility, can make heat can not pile up at heating position, but be dispersed into equably on each radiating fin of radiator, greatly improve the heat conductivility of fin.Thyristor radiator parameter is as follows:
| Title | Model and specification | Unit | Quantity |
| Thyristor radiator | RZP-S90A-569 | ? | 90 |
Adopt heat pipe heat radiation technology to dispel the heat to thyristor controlled series compensation, good heat dissipation effect, noise is low, long service life, there is not the seepy question of water-filled radiator, and huge water circulation system.Adopting heat pipes for heat transfer speed is 100 times of copper, can meet the cooling requirements that all high-power electronic components run.
The electrical design technology of static passive compensation device in parallel between AT electric power system TF line provided by the invention, AT transformer can be effectively avoided to pass through big current for a long time, and N line passes through electric current, greatly improve AT transformer useful life, make SVC device regulation voltage more direct, power quality controlling effect is more obvious simultaneously.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. an electric railway AT tractive power supply system 55kV static passive compensation device, described device comprises Controlled Reactor TCR branch road in parallel and filtering FC branch road, it is characterized in that, described Controlled Reactor TCR branch road and the equal direct screening of filtering FC branch road are under 55kV bus; Between the contact wire that described device is connected in parallel on AT electric power system railway dragging net and positive feeder;
Described AT electric power system comprises 55kV traction transformer, railway dragging net, contact wire and positive feeder; One output on 55kV traction transformer time limit is connected with the contact wire of railway dragging net, and another output is connected with the positive feeder of railway dragging net;
Described Controlled Reactor TCR branch road comprises thyristor controlled series compensation and the reactor of series connection; Described reactor is arranged at the two ends of thyristor controlled series compensation respectively; Described filtering FC branch road comprises reactor and the capacitive filter of series connection, between reactor and capacitive filter, be connected with lightning arrester; The quantity of described filtering FC branch road is 2;
Described thyristor controlled series compensation adopts horizontal type structure, comprises the thyristor valve string of series connection, radiator, dynamic voltage-balancing, static state voltage equipoise circuit, triggers and measure loop, overvoltage trigger protection loop and main body frame; Described dynamic voltage-balancing, static state voltage equipoise circuit, triggering and measure loop and overvoltage trigger protection loop are integrated on thyristor electronic board; Described thyristor valve string, radiator and thyristor electronic board are installed on main body frame;
Often organize thyristor valve string to be connected by two thyristor inverse parallels, when installing thyristor valve string, the string number of every phase is 40 strings;
In described thyristor valve string, the redundant digit of series thyristor is 2, when often have mutually 2 only reach following thyristor break down time, thyristor controlled series compensation can normally run;
Described radiator adopts heat pipe heat radiation, and described heat pipe is the cylindrical tube of vacuum; Central a part of space is filled with the liquid being easy to evaporate, and remain vacuum state in heat pipe, evaporating temperature and the ambient temperature of central liquid are close; After heat is absorbed by volatile layer, liquid is heated to boiling point, then just comes to life, produce steam, steam rises to cooling layer, and after heat is released, steam regelation becomes drop, owing to being subject to Action of Gravity Field or other internal action, drop comes back to volatile layer, continues to be evaporated, and is then cooled, form a circulation gone round and begun again, what promote this circulation is exactly thermal source; Phase transformation reaction between aqueous vapor, makes the heat conduction efficiency of heat pipe than common fine copper height decades of times, even hundreds of times; By the speed be exceedingly fast, heat should be led the top of heat pipe in this way from the bottom of heat pipe; Heat can not be piled up at heating position, but be dispersed on each radiating fin of radiator equably, improve the heat conductivility of radiating fin greatly;
Described main body frame, for overcoming the electrostatic induction of thyristor controlled series compensation and anti-interference, described main body frame is provided with line installing hole;
Described thyristor adopts dynamic repetitive peak voltage 5600V, and dynamic not repetitive peak voltage 6500V type thyristor;
The triggering mode of described thyristor controlled series compensation is photoelectricity triggering mode, and each thyristor in described thyristor controlled series compensation is provided with Overvoltage Protection;
The arrangement that the stack combinations mode of described thyristor controlled series compensation comprises side-by-side horizontal arrangement and superposes up and down; When thyristor controlled series compensation stack combinations, between valve group, composite insulator is being installed between two.
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| CN107658109A (en) * | 2017-08-03 | 2018-02-02 | 全球能源互联网研究院 | A kind of thyristor voltage adjuster and its heat dissipating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201515226U (en) * | 2009-09-14 | 2010-06-23 | 株洲变流技术国家工程研究中心有限公司 | Device for increasing network voltage at tail end of long power supply arm for heavy haul railway |
| CN101882788A (en) * | 2009-09-14 | 2010-11-10 | 株洲变流技术国家工程研究中心有限公司 | Method and device for improving supply voltage at tail end of long supply arm of heavy haul railway |
| CN102882219A (en) * | 2012-10-26 | 2013-01-16 | 株洲变流技术国家工程研究中心有限公司 | Railway power supply system comprehensive electric energy quality treatment device and method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201515226U (en) * | 2009-09-14 | 2010-06-23 | 株洲变流技术国家工程研究中心有限公司 | Device for increasing network voltage at tail end of long power supply arm for heavy haul railway |
| CN101882788A (en) * | 2009-09-14 | 2010-11-10 | 株洲变流技术国家工程研究中心有限公司 | Method and device for improving supply voltage at tail end of long supply arm of heavy haul railway |
| CN102882219A (en) * | 2012-10-26 | 2013-01-16 | 株洲变流技术国家工程研究中心有限公司 | Railway power supply system comprehensive electric energy quality treatment device and method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李智明等.牵引变电站SVC控制系统的设计.《变流技术与电力牵引》.2007,(第3期),第60-63页. * |
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Effective date of registration: 20170531 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: CHINA EPRI SCIENCE & TECHNOLOGY Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: STATE GRID SMART GRID Research Institute Patentee before: State Grid Corporation of China Co-patentee before: CHINA EPRI SCIENCE & TECHNOLOGY Co.,Ltd. |
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