CN209344791U - A kind of traction substation comprehensive compensating device based on homo-phase traction transformer - Google Patents
A kind of traction substation comprehensive compensating device based on homo-phase traction transformer Download PDFInfo
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- CN209344791U CN209344791U CN201821917694.5U CN201821917694U CN209344791U CN 209344791 U CN209344791 U CN 209344791U CN 201821917694 U CN201821917694 U CN 201821917694U CN 209344791 U CN209344791 U CN 209344791U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses a kind of traction substation comprehensive compensating devices based on homo-phase traction transformer, are related to attached wires of AC electrified railway power supply technique field.The traction substation comprehensive compensating device includes the first reactive-load compensator, the second reactive-load compensator, third reactive-load compensator and control module；First reactive-load compensator is connected between the r terminal and s terminal of homo-phase traction transformer secondary side, and first reactive-load compensator, the second reactive-load compensator, third reactive-load compensator are connect with the control module respectively.Therefore, the utility model can not only effectively cancel the electric split-phase in traction substation exit, realize cophase supply, moreover it is possible to the technical issues of efficiently solving the idle and negative phase-sequence progress real time comprehensive compensation of traction substation generation.
Description
Technical field
The utility model relates to attached wires of AC electrified railway for electrical domain more particularly to a kind of based on homo-phase traction transformer
Idle, the negative phase-sequence comprehensive compensation technique of traction substation.
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.But its core is realized by changing the effective power flow of traction substation
Negative sequence compensation keeps negative phase-sequence up to standard.
The utility model does not change the effective power flow of traction substation, solves traction substation by reactive power flow control
Idle and negative phase-sequence comprehensive compensation technique problem, realize cophase supply, meanwhile, increase power factor improves feeder voltage, and
Negative sequence management is set to be up to state standards requirement.
Utility model content
That there is provided a kind of traction substations based on homo-phase traction transformer is idle for the utility model aim, negative phase-sequence is comprehensive
Compensation device can not only effectively realize cophase supply, moreover it is possible to which the idle and negative phase-sequence for efficiently solving traction substation generation is comprehensive
The technical issues of closing real-time compensation.
In order to solve the above-mentioned technical problem, technical solution used by the utility model is specific as follows:
A kind of traction substation comprehensive compensating device based on homo-phase traction transformer, the traction substation mainly include
Three-phase high-voltage bus, homo-phase traction transformer and feeder line；The homo-phase traction transformer primary side is connected with three-phase high-voltage bus three
It connects, described homo-phase traction transformer secondary side one end is connect with Traction networks, another ground connection of secondary side；Wherein: the comprehensive compensation
Device includes the first reactive-load compensator, the second reactive-load compensator, third reactive-load compensator and control module；First reactive-load compensator
It is connected between the r terminal and s terminal of homo-phase traction transformer secondary side, the second reactive-load compensator is connected to homo-phase traction transformer
Between the r terminal and t terminal of secondary side, third reactive-load compensator be connected to homo-phase traction transformer secondary side s terminal and t terminal it
Between；First reactive-load compensator, the second reactive-load compensator, third reactive-load compensator are connect with the control module respectively.
Preferably, the control module is mainly collectively formed by voltage transformer, current transformer and controller；The control
The input terminal of device processed is connect with the measurement end of voltage transformer, current transformer respectively, controller output end respectively with the first nothing
The control terminal connection of function compensator, the second reactive-load compensator, third reactive-load compensator.
Preferably, the primary side of the voltage transformer is connected between feeder line and ground, and the primary side of current transformer is serially connected with
On feeder line.
Preferably, the homo-phase traction transformer primary side R terminal, S terminal, T terminal respectively with the A of three-phase high-voltage bus,
B, C tri- is connected, and the r terminal of secondary side rs winding leads to Traction networks connection, secondary side rs winding s terminal ground through feeder line.
Compared with prior art, the utility model has the beneficial effects that
One, the reactive-load compensator of the comprehensive compensating device, which can integrate, generates reactive component and negative sequence component, realizes same
It mutually powers, so that power factor, feeder voltage and negative phase-sequence is obtained comprehensive compensation, do not change the active tide of traction substation Traction networks
Stream, comprehensive compensating device do not transmit positive sequence active power, have the technical advantage for exempting from electrical capacity charge.
Two, the operating condition of the reactive-load compensator of the comprehensive compensating device is reversible, when feeder line is in equivalent regeneration regime, still
Electric energy up to standard can be sent out to power grid.
Three, structure is simple, and superior performance, technologically advanced, method is reliable, easy to implement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traction substation comprehensive compensating device described in the utility model embodiment one.
Fig. 2 is relational structure schematic diagram between control module and reactive-load compensator described in the utility model embodiment one.
Specific embodiment
It is created to be best understood from the utility model, briefly explains utility model works principle herein: by being connected to
First reactive-load compensator compensation traction power factor and feeder voltage between the r terminal and s terminal of homo-phase traction transformer secondary side,
Traction power factor and feeder voltage is set to reach target call；Using three-phase high-voltage bus as negative phase-sequence examination point up to standard, pass through connection
Between the second reactive-load compensator and s terminal and t terminal between the secondary side r terminal and t terminal of homo-phase traction transformer
The idle power output of three reactive-load compensators combines the negative-sequence current (power) generated to compensate traction load and the first reactive-load compensator,
Reach national standard after compensation, wherein the second reactive-load compensator and third reactive-load compensator generate negative phase-sequence trend, and does not change original
Some effective power flows.The utility model will be further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1, to provide a kind of traction substation based on homo-phase traction transformer comprehensive for the utility model embodiment
Compensation device is closed, the traction substation mainly includes three-phase high-voltage bus HB, homo-phase traction transformer TT and feeder line F；It is described
Homo-phase traction transformer primary side is connected with three-phase high-voltage bus HB tri-, and described homo-phase traction transformer secondary side one end is through feeder line F
Lead to Traction networks OCS connection, another ground connection of secondary side；Wherein: the comprehensive compensating device includes the first reactive-load compensator SVG1、
Second reactive-load compensator SVG2, third reactive-load compensator SVG3With control module MC；First reactive-load compensator SVG1It is connected to same phase
Between the r terminal and s terminal of tractive transformer TT secondary side, the second reactive-load compensator SVG2It is connected to homo-phase traction transformer TT times
Between the r terminal and t terminal on side, third reactive-load compensator SVG3It is connected to s terminal and the end t of homo-phase traction transformer TT secondary side
Between son；The first reactive-load compensator SVG1, the second reactive-load compensator SVG2, third reactive-load compensator SVG3Respectively with it is described
Control module MC connection.
In the utility model embodiment, the homo-phase traction transformer primary side R terminal, S terminal, T terminal are respectively with three
A, B, C tri- of phase high voltage bus HB is connected, and the r terminal of secondary side rs winding leads to Traction networks OCS connection, secondary side through feeder line F
Rs winding s terminal ground.Traction networks OCS power supply train LC.The specific structure of the homo-phase traction transformer can please be detailed in China
Utility model patent (number of patent application CN201811059607.1) document, details are not described herein.
In the utility model embodiment, the comprehensive compensating device further includes control module MC, the control module MC
Mainly collectively formed by voltage transformer pt, Current Transmit and controller CD；The input terminal of the controller CD respectively with
Voltage transformer pt, Current Transmit measurement end connection, controller CD output end respectively with the first reactive-load compensator SVG1、
Second reactive-load compensator SVG2, third reactive-load compensator SVG2Control terminal connection.The primary side of the voltage transformer pt is connected to
Between feeder line F and ground, the primary side of Current Transmit is serially connected on feeder line F.
The operation specific steps of the comprehensive compensating device of traction substation described in the utility model embodiment are as follows:
(1) negative phase-sequence for setting three-phase high-voltage bus HB allows capacity as Sε；
(2) voltage and current that controller CD is measured respectively first with t moment voltage transformer pt and Current Transmit
It calculates and power s and its power factor (is regarded) as cos φ, further according to Target Towing load function by the traction load of feeder line F
Rate factor or target feeder voltage are to the first reactive-load compensator SVG1) absorbing reactive power Q1It is controlled and is compensated, and Q1Capacitive
It is positive；At this point, Q1The negative sequence power s generated with s-Size be
(3) judge Q1The negative sequence power s generated with s-Allow capacity S with the negative phase-sequence of three-phase high-voltage bus HBεBetween size
Relationship, then the second reactive-load compensator SVG is controlled by controller CD2, third reactive-load compensator SVG3Absorbing reactive power carries out
Compensation, wherein the second reactive-load compensator SVG2, third reactive-load compensator SVG3Absorbing reactive power be respectively Q2、Q3。
In the utility model embodiment, work as s-≤SεWhen, then controller CD controls the second reactive-load compensator SVG2, third
Reactive-load compensator SVG3Absorbing reactive power compensates, and Q2And Q3Component size be 0.
In the utility model embodiment, work as s-> SεWhen, controller CD controls the second reactive-load compensator SVG2, third without
Function compensator SVG3Absorbing reactive power compensates, wherein when feeder line F is in traction working condition, then Q2Component be sense
Property, Q3Component be capacitive；When feeder line F is in regeneration regime, then Q2Component be capacitive, Q3Component be perception；Q2And Q3
Size are as follows:Wherein set
Target Towing load power factor refers to attached wires of AC electrified railway electric locomotive close to the function under full-load conditions
Rate.Factor is about between 0.82~0.85.Under the conditions of light load, power factor can sharply deteriorate.In addition, being drawn in transmitting
In power process, houlage network and main transformer in substation also need to consume the quite reactive power of number most, reduction to electric propulsion
The on high-tension side average power factor of electric substation is usually between 0.76~0.78.Target feeder voltage refers to and any net node phase
The branch voltage of connection can be fed into branch voltage, be also possible to feed out branch voltage.But because canonical topology be radiation
Type, so the energy flow in mostly is unidirectional.But to improve power supply reliability, Traction networks structure change is very complicated, power
Transmission also be not absolutely be a direction.So roughly, the branch voltage in Traction networks can all be referred to as feeder voltage.
Claims (4)
1. a kind of traction substation comprehensive compensating device based on homo-phase traction transformer, the traction substation mainly includes three
Phase high voltage bus (HB), homo-phase traction transformer (TT) and feeder line (F)；The homo-phase traction transformer primary side and three-phase high-voltage are female
Line (HB) three is connected, and described homo-phase traction transformer secondary side one end is connect with Traction networks (OCS), secondary side other end ground connection；
It is characterized by: the comprehensive compensating device includes the first reactive-load compensator (SVG1), the second reactive-load compensator (SVG2), third
Reactive-load compensator (SVG3) and control module (MC)；First reactive-load compensator (SVG1) to be connected to homo-phase traction transformer (TT) secondary
Between the r terminal and s terminal on side, the second reactive-load compensator (SVG2) it is connected to the r terminal of homo-phase traction transformer (TT) secondary side
Between t terminal, third reactive-load compensator (SVG3) be connected to homo-phase traction transformer (TT) secondary side s terminal and t terminal it
Between；First reactive-load compensator (the SVG1), the second reactive-load compensator (SVG2), third reactive-load compensator (SVG3) respectively with institute
State control module (MC) connection.
2. a kind of traction substation comprehensive compensating device based on homo-phase traction transformer according to claim 1, special
Sign is: the control module (MC) is mainly by voltage transformer (PT), current transformer (CT) and controller (CD) common structure
At；The input terminal of the controller (CD) is connect with the measurement end of voltage transformer (PT), current transformer (CT) respectively, control
Device (CD) output end respectively with the first reactive-load compensator (SVG1), the second reactive-load compensator (SVG2), third reactive-load compensator
(SVG2) control terminal connection.
3. a kind of traction substation comprehensive compensating device based on homo-phase traction transformer according to claim 2, special
Sign is: the primary side of the voltage transformer (PT) is connected between feeder line (F) and ground, the primary side concatenation of current transformer (CT)
In on feeder line (F).
4. a kind of traction substation comprehensive compensating device based on homo-phase traction transformer according to claim 1, special
Sign is: the homo-phase traction transformer primary side R terminal, S terminal, T terminal A, B, C tri- with three-phase high-voltage bus (HB) respectively
It is connected, the r terminal of secondary side rs winding leads to Traction networks (OCS) connection, secondary side rs winding s terminal ground through feeder line (F).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821917694.5U CN209344791U (en) | 2018-11-20 | 2018-11-20 | A kind of traction substation comprehensive compensating device based on homo-phase traction transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821917694.5U CN209344791U (en) | 2018-11-20 | 2018-11-20 | A kind of traction substation comprehensive compensating device based on homo-phase traction transformer |
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| CN209344791U true CN209344791U (en) | 2019-09-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378828A (en) * | 2018-11-20 | 2019-02-22 | 成都尚华电气有限公司 | A kind of traction substation comprehensive compensating device and its method based on homo-phase traction transformer |
| CN111267675A (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 quasi-bilateral power supply traction power supply system thereof |
| CN113581027A (en) * | 2021-07-06 | 2021-11-02 | 成都尚华电气有限公司 | Electric train based on ground traction power supply, power supply system and control method |
-
2018
- 2018-11-20 CN CN201821917694.5U patent/CN209344791U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378828A (en) * | 2018-11-20 | 2019-02-22 | 成都尚华电气有限公司 | A kind of traction substation comprehensive compensating device and its method based on homo-phase traction transformer |
| CN109378828B (en) * | 2018-11-20 | 2024-02-06 | 成都尚华电气有限公司 | Traction substation comprehensive compensation device and method based on in-phase traction transformer |
| CN111267675A (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 quasi-bilateral power supply traction power supply system thereof |
| CN111267675B (en) * | 2020-03-11 | 2021-10-15 | 中车株洲电力机车研究所有限公司 | Train power supply network and quasi-bilateral power supply traction power supply system thereof |
| CN113581027A (en) * | 2021-07-06 | 2021-11-02 | 成都尚华电气有限公司 | Electric train based on ground traction power supply, power supply system and control method |
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