CN208522471U - A kind of negative phase-sequence centralized compensation control system of traction substation group - Google Patents
A kind of negative phase-sequence centralized compensation control system of traction substation group Download PDFInfo
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- CN208522471U CN208522471U CN201820954750.6U CN201820954750U CN208522471U CN 208522471 U CN208522471 U CN 208522471U CN 201820954750 U CN201820954750 U CN 201820954750U CN 208522471 U CN208522471 U CN 208522471U
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- traction substation
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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
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Abstract
The utility model provides the negative phase-sequence centralized compensation control system of traction substation group a kind of, belongs to electrified railway power supply technical field.Traction substation group includes n traction substation, its primary side is powered by the sectionalized busbar of the same substation, 1 traction substation is set as negative sequence compensation electric substation in traction substation group, remaining n-1 traction substation is single-phase electric substation, bus is respectively drawn in traction substation group and tractive feeder voltage is separate identical, and Traction networks implement through cophase supply；Negative sequence compensation electric substation carries out negative phase-sequence centralized compensation, current transformer, the voltage transformer of the input terminal connection negative sequence compensation electric substation of the controller of same-phase compensation device, and current transformer, the voltage transformer of each single-phase electric substation are connected by fiber optic network, the control terminal of its output end connection same-phase compensation device, data transmission and real-time control are synchronized, keeps total negative phase-sequence up to standard.It is mainly used for electric railway perforation power supply system.
Description
Technical field
The utility model relates to attached wires of AC electrified railway power supply technique field more particularly to the negative phase-sequence collection of traction substation group
Middle compensation technique.
Background technique
Electric railway generallys use the single phase industrial frequency AC system powered by municipal power supply system, to keep single-phase traction negative
Equilibrium assignmen, electric railway often use the side of rotation phase sequence, split-phase switched-mode power supply to lotus as far as possible in three-phase electrical power system
Case.It is isolated between adjacent service area at split-phase subregion with neutral section insulator, forms electric split-phase, abbreviation split-phase.Electric split-phase link
It is link most weak in entire tractive power supply system, train excessively mutually becomes high-speed railway or even entire electric railway is led
Draw the bottleneck of power supply.
Theory and practice shows to use single-phase traction transformer or combined type cophase supply technology can be in traction substation
The electric split-phase for cancelling its exit uses bilateral connection technology that can cancel the electric split-phase at this, to eliminate confession in subregion
Storage battery neck improves railway power supply ability and transport capacity.Wherein, traction substation is same using single-phase traction transformer or combined type
The technology that phase power supply technique cancels the electric split-phase in its exit has been succeeded application, and effect is very good, and subregion it is bilateral
Connection is similar to the Electromagnetic coupling of power grid, restriction of the application by grid conditions, such as power grid transmission line and is formed with Traction networks
Parallel relationship and voltage class is closer to, it may appear that the larger problem of penetration (euqalizing current) in Traction networks, in addition
Lack relevant criterion, influences the implementation of two-side feeding (cyclization), but there is a kind of power supply structure not generate penetration, here it is spokes
Formula structure power supply mode is penetrated, i.e. the sectionalized busbar of the same substation of power grid is given multiple traction substations to be powered respectively, changed
Yan Zhi forms tree-like power supply in network graph theory: the substation is tree root, and each traction substation is leaf.At this point, becoming in traction
The used single-phase traction transformer of electricity or combined type cophase supply technology cancel the electric split-phase in its exit, use in subregion double
Side connection technology and cancel the electric split-phase at this, penetration would not be caused in Traction networks, to create power grid and railway
The situation of two-win.
Here, we claim the same substation of power grid to become with radiant type structure to these tractions that multiple traction substations are powered
Traction substation group carried out by electricity.Traction substation group carrying out through cophase supply, optimizing is configured so that traction power transformation
Most 1 traction substation are negative sequence compensation electric substation in institute group, remaining is single-phase electric substation, all lists in traction substation group
Mutually the voltage of traction bus is separate identical.
The utility model solves the technical issues of negative phase-sequence centralized compensation of traction substation group, meets national standard, and make
Compensation capacity is minimum.
Utility model content
The purpose of the utility model is to provide the negative phase-sequence centralized compensation control systems of traction substation group a kind of, it can be effective
Ground solves the plant issue that the negative phase-sequence that each traction substation dispersed in traction substation group generates carries out centralized compensation.
The purpose of this utility model is achieved through the following technical solutions: a kind of negative phase-sequence concentration of traction substation group
TT&C system is compensated, traction substation group includes n traction substation, and primary side is supplied by the sectionalized busbar of the same substation
Electricity, sectionalized busbar negative phase-sequence allow capacity to be Sd, a traction substation in traction substation group is negative sequence compensation electric substation
CPS, use is not equal to hold Scott wiring main transformer, and secondary side tractive winding one end ground connection of the main transformer, the other end, which is led to, to be led
Draw bus TB1, the compensative winding connection same-phase compensation device ADA primary side of secondary side, the termination of secondary side one of same-phase compensation device ADA
Ground, the other end also lead to traction bus TB1, remaining n-1 traction substation is single-phase electric substation SPS, using single-phase wiring master
Transformer, secondary side winding one end ground connection of the main transformer, the other end lead to traction bus TBi；It is respectively led in traction substation group
Draw bus TBiVoltage is separate identical, and draws tractive feeder Fi, i=2,3 ..., n, n >=2；Negative phase-sequence centralized compensation observing and controlling system
System is by each tractive feeder FiCurrent Transmiti, voltage transformer pti, fiber optic network FO and same-phase compensation device ADA control
Device PS processed is collectively formed；The Current Mutual Inductance of the input terminal connection negative sequence compensation electric substation of the controller PS of same-phase compensation device ADA
Device CT1, voltage transformer pt1, and connect by fiber optic network FO the Current Transmit of each single-phase electric substationi, voltage transformer
PTi, the control terminal of the output end connection same-phase compensation device ADA of controller PS；I=2,3 ..., n, n >=2.
The working principle of the utility model is: hand over the straight power factor for handing over train very high, close to 1, and each traction power transformation
Power factor it is identical, with to traction substation group power substation's sectionalized busbar be PCC (negative phase-sequence examination point), traction become
In electric institute group it is all it is single-phase traction buses voltages it is separate identical, in engineering it is each traction bus is generated PCC at always bear
Sequence electric current can be calculated with scalar algebraical sum, and total negative phase-sequence can carry out centralized compensation, each power transformation in a traction substation
Negative sequence power synthesized with the negative sequence power of same-phase compensation device after meet national standard；1 is led in traction substation group
Drawing electric substation is negative sequence compensation electric substation, and use is equal to hold Scott wiring main transformer, main transformer secondary side tractive winding and secondary side compensate around
90 ° of voltage phase difference of group, the negative sequence compensation effect of same-phase compensation device reaches best；The big, speed using fiber optic network transmission capacity
Fast advantage and data synchronization technology obtain the synchrodata of each traction substation in strange land, carry out real-time control, reach negative phase-sequence
To national standard.
Compared with prior art, the utility model has the beneficial effects that
One, through cophase supply can be implemented in a wider context, maximum magnitude cancels electric split-phase, do not generate and pass through function
Rate.
Two, a negative sequence compensation electric substation is set in multiple traction substations of traction substation group carry out negative phase-sequence concentration
Compensation, can make the overall structure of traction substation group most simplified, same-phase compensation unit optimization, the smallest investment, system sexual valence
Than maximizing.
Three, it realizes that strange land is synchronous with local data, concentrates and carry out real-time negative phase-sequence control, reach national regulations value.
Four, structure is simple, and superior performance, technologically advanced, method is reliable, easy to implement.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model modulator structural schematic diagram.
Specific embodiment
The utility model will be further described with reference to the accompanying drawings and detailed description.
Embodiment
Fig. 1 is shown, the negative phase-sequence centralized compensation Control system architecture signal of the traction substation group of the utility model embodiment
Figure: a kind of negative phase-sequence centralized compensation TT&C system of traction substation group, traction substation group includes n traction substation, former
While being powered by the sectionalized busbar of the same substation, sectionalized busbar negative phase-sequence allows capacity to be Sd, first in traction substation group
A traction substation is negative sequence compensation electric substation CPS, and use, which does not wait, holds Scott wiring main transformer, the secondary side of the main transformer
Tractive winding one end ground connection, the other end lead to traction bus TB1, the compensative winding connection same-phase compensation device ADA primary side of secondary side,
Secondary side one end of same-phase compensation device ADA is grounded, and the other end also leads to traction bus TB1, second to (n-1)th traction power transformation
Carried out by single-phase electric substation SPS, using single-phase wiring main transformer, secondary side winding one end of the main transformer is grounded, and the other end draws
To traction bus TBi；Bus TB is respectively drawn in traction substation groupiVoltage is separate identical, and draws tractive feeder Fi, i=2,
3 ..., n, n >=2；Negative phase-sequence centralized compensation TT&C system is by each tractive feeder FiCurrent Transmiti, voltage transformer pti、
The controller PS of fiber optic network FO and same-phase compensation device ADA are collectively formed；The input of the controller PS of same-phase compensation device ADA
The Current Transmit of end connection negative sequence compensation electric substation1, voltage transformer pt1, and pass through each single-phase change of fiber optic network FO connection
Electricity Current Transmiti, voltage transformer pti, i=2,3 ..., n, n >=2, the output end connection of controller PS is the same as mutually benefit
Repay the control of device ADA；.
In Fig. 1, each tractive feeder Fi powers to Traction networks OCS, and Traction networks OCS powers to train L1, L2, L3 etc..
Fig. 2 is the structural schematic diagram of the modulator PS of the utility model, and the input terminal connection negative sequence compensation of controller PS becomes
Electricity current transformer, voltage transformer, and connect by fiber optic network FO current transformer, the voltage of each single-phase electric substation
Mutual inductor, the control terminal of the output end connection same-phase compensation device ADA of controller PS.
In conjunction with Fig. 1,2, it is known that allow capacity to be Sd to the negative phase-sequence of the sectionalized busbar of the substation of traction substation group power supply,
If through Current Transmiti, voltage transformer ptiEach tractive feeder instantaneous power of synchro measure is si(t), i=1,2 ...,
Each tractive feeder F is counted in n, n >=2iThe instantaneous power s of moment ti(t) summation is s (t), then controller PS controls same-phase compensation dress
Set the instantaneous power s of ADA moment t outputC(t) it answers are as follows:
sC(t)=[s (t)-Sd]/2
Work as sC(t) when < 0, s is enabledC(t)=0 same-phase compensation device ADA stoppage in transit, is represented.
If corresponding negative phase-sequence allows each tractive feeder power summation of capacity Sd design conditions to be denoted as S, then same-phase compensation device
The calculating capacity S of CPDCAre as follows:
SC=(S-Sd)/2
If SC< 0 is indicated without installing same-phase compensation device CPD.
Claims (1)
1. the negative phase-sequence centralized compensation control system of traction substation group a kind of, traction substation group includes n traction substation,
Its primary side is powered by the sectionalized busbar of the same substation, and sectionalized busbar negative phase-sequence allows capacity to be Sd, it is characterised in that: the negative phase-sequence
Centralized compensation TT&C system is by each tractive feeder FiCurrent Transmiti, voltage transformer pti, fiber optic network FO and same phase
The controller PS of compensation device ADA is collectively formed；Wherein, a traction substation in traction substation group is set as negative phase-sequence benefit
Electric substation CPS is repaid, using Scott wiring main transformer, secondary side tractive winding one end of the main transformer is grounded, and the other end is led to
Draw bus TB1The compensative winding of connection, secondary side connects same-phase compensation device ADA primary side, the secondary side one of same-phase compensation device ADA
End ground connection, the other end also lead to traction bus TB1Connection, remaining n-1 traction substation is single-phase electric substation SPS, using list
Phase connection main transformer, secondary side winding one end ground connection of the main transformer, the other end lead to traction bus TBi connection；They
The traction bus TB respectively connected in traction substation groupiVoltage is separate identical, and draws tractive feeder Fi, i=2,3 ..,
n,n≥2；The Current Transmit of the input terminal connection negative sequence compensation electric substation CPS of the controller PS of same-phase compensation device ADA1、
Voltage transformer pt1, and connect by fiber optic network FO the Current Transmit of each single-phase electric substation SPSi, voltage transformer
PTi, i=2,3 ..., n, n >=2；The control terminal of the output end connection same-phase compensation device ADA of controller PS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820954750.6U CN208522471U (en) | 2018-06-15 | 2018-06-15 | A kind of negative phase-sequence centralized compensation control system of traction substation group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820954750.6U CN208522471U (en) | 2018-06-15 | 2018-06-15 | A kind of negative phase-sequence centralized compensation control system of traction substation group |
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| CN208522471U true CN208522471U (en) | 2019-02-19 |
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| CN201820954750.6U Withdrawn - After Issue CN208522471U (en) | 2018-06-15 | 2018-06-15 | A kind of negative phase-sequence centralized compensation control system of traction substation group |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667041A (en) * | 2018-06-15 | 2018-10-16 | 西南交通大学 | A kind of the negative phase-sequence centralized compensation control system and its control method of traction substation group |
| CN114013345A (en) * | 2021-10-25 | 2022-02-08 | 成都尚华电气有限公司 | Double-system traction power supply device, control device, system and method |
-
2018
- 2018-06-15 CN CN201820954750.6U patent/CN208522471U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667041A (en) * | 2018-06-15 | 2018-10-16 | 西南交通大学 | A kind of the negative phase-sequence centralized compensation control system and its control method of traction substation group |
| CN108667041B (en) * | 2018-06-15 | 2023-10-13 | 西南交通大学 | Negative sequence centralized compensation control system of traction substation group and control method thereof |
| CN114013345A (en) * | 2021-10-25 | 2022-02-08 | 成都尚华电气有限公司 | Double-system traction power supply device, control device, system and method |
| CN114013345B (en) * | 2021-10-25 | 2023-09-19 | 成都尚华电气有限公司 | Dual-system traction power supply device, control device, system and method |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190219 Effective date of abandoning: 20231013 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190219 Effective date of abandoning: 20231013 |