CN102110986B - Reactive power compensation device for traction substation in electrified railway - Google Patents
Reactive power compensation device for traction substation in electrified railway Download PDFInfo
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- CN102110986B CN102110986B CN2011100676716A CN201110067671A CN102110986B CN 102110986 B CN102110986 B CN 102110986B CN 2011100676716 A CN2011100676716 A CN 2011100676716A CN 201110067671 A CN201110067671 A CN 201110067671A CN 102110986 B CN102110986 B CN 102110986B
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- China
- Prior art keywords
- reactive power
- power compensation
- compensation branch
- branch road
- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/02—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power with means for maintaining voltage within a predetermined range
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
Abstract
The invention relates to a reactive power compensation technology for a traction power supply system in an electrified railway, and particularly relates to a reactive power compensation device for a traction substation in an electrified railway, solving the problem that a conventional reactive power compensation device for the traction power supply system in the electrified railway can not adapt to quickly varied loading, can not provide stable power supply voltage, and has bad operation reliability and high cost. The reactive power compensation device provided by the invention comprises a special single-phase transformer and a box body distribution device; and a plurality of reactive power compensation branch circuits formed by contact devices, capacitors and reactors in series connection are mounted in the box body distribution device. The invention effectively solves the problem that the conventional reactive power compensation device for the traction power supply system in the electrified railway can not adapt to quickly varied loading, can not provide stable power supply voltage, and has bad operation reliability and high cost, and is suitable for the reactive power compensation and the harmonic suppression to the traction power supply system in the electrified railway.
Description
Technical field
The present invention relates to the electric railway traction power supply system reactive power compensation technology, specifically is a kind of Traction Substation of Electric Railway reactive power compensator.
Background technology
Electric railway traction generally adopts single-phase 27.5kV power supply, and three phase and symmetric power system is constituted asymmetric load.Electric traction adopts the rectification type locomotive, and consumption hysteresis quality perception in service is idle, produces the odd harmonic electric current simultaneously, causes traction locomotive operate power factor low, and electric power system is caused harmonic pollution.The randomness of the frequent ex-situ operations start and stop of electric locomotive and locomotive load and the property gone out in addition make electric power system PCC point voltage occur falling temporarily very frequent, have a strong impact on the quality of power supply of power supply grid and the normal operation of self.Given this, need carry out reactive power compensation and harmonic wave inhibition to electric railway traction power supply system.The major measure of the reactive power compensation of electric railway traction power supply system and harmonic wave inhibition at present is in load (27.5kV) side reactive power compensator to be installed.Existing reactive power compensator mainly contains passive filtration unit (FC), high-pressure thyristor opening-closing capacitor bank (TSC), phased reactance type SVC(TCR+FC), magnetic control reactance type SVC(MSVC) or static reacance generator (SVG), active filter (APF) etc., wherein, passive filtration unit is combined into 3 by power capacitor and reactor, 5 filter branch, its shortcoming is to adapt to fast-changing impact load, there are a large amount of idle phenomenons of sending, a large amount of capacity of idle power that send can make average power factor descend, cause the supply power voltage catastrophic fluctuation simultaneously, electric energy loss increases; Phased reactance type compensation arrangement is to be composed in series the valve group by many thyristors, and it exists, and failure rate height, operational reliability are relatively poor, self produce the problem of harmonic wave; The high-pressure thyristor opening-closing capacitor bank can adapt to fast-changing load, but single pool-size of compensation is bigger than normal, causes mains ripple bigger; All the other several devices problems such as then the ubiquity cost is too high, floor space is bigger than normal, cost performance is low.In sum, existing electric railway traction power supply system reactive power compensator exist can't adapt to fast-changing load, can't stable power-supplying voltage, operational reliability is poor and cost is high problem, based on this, be necessary to invent a kind of can adapt to fast-changing load, can stable power-supplying voltage, electric railway traction power supply system reactive power compensator reliable and with low cost.
Summary of the invention
The present invention for solve existing electric railway traction power supply system reactive power compensator can't adapt to fast-changing load, can't stable power-supplying voltage, operational reliability is poor and cost is high problem, a kind of Traction Substation of Electric Railway reactive power compensator is provided.
The present invention adopts following technical scheme to realize: the Traction Substation of Electric Railway reactive power compensator comprises extraordinary single-phase transformer and casing power distribution equipment; The some groups of reactive power compensation branch roads that formed by contact device, capacitor, reactor serial connection are installed in the casing power distribution equipment, and each two ends of organizing the reactive power compensation branch road all links to each other with the secondary side of extraordinary single-phase transformer.The secondary side of described extraordinary single-phase transformer can have multiple malformation according to actual needs.
During work, the primary side voltage of extraordinary single-phase transformer is supply power voltage (as 27.5kV), and secondary side voltage is consistent with the voltage that the reactive power compensation branch road requires, and the voltage that the reactive power compensation branch road requires is the voltage of comprehensive price ratio the best of capacitor and contact device.The reactive power compensation of electric railway traction power supply system and harmonic wave suppress all to be undertaken by the reactive power compensation branch road.Compare with existing electric railway traction power supply system reactive power compensator, Traction Substation of Electric Railway reactive power compensator of the present invention has following advantage: one, adopt extraordinary single-phase transformer, making secondary side voltage is the voltage of comprehensive price ratio the best of capacitor and noncontacting switch, take full advantage of the advantage of the comprehensive price ratio of capacitor and contact device, effectively reduce apparatus cost; Two, extraordinary single-phase transformer can have a plurality of windings as required, can connect the filter of different filter times, fixes and the dynamic reactive power compensation, and fixedly the contactor switching is adopted in reactive power compensation, and dynamic passive compensation adopts the noncontacting switch switching; Three, power distribution equipment is body structure, can with extraordinary single-phase transformer be installed on together indoor outside, speed of application is fast, the construction period is short; Four, can adapt to load variations fast, effectively improve load power factor, reactive power not take place send to electrical network; Five, reactive power compensation is propped up the route capacitor and reactor is in series, and can constitute 3,5,7 inferior filters by the needs that suppress harmonic wave, thus effective suppressing portion subharmonic electric current; Six, device itself harmonic wave that do not produce in service.In sum, Traction Substation of Electric Railway reactive power compensator of the present invention not only can adapt to fast-changing load, and can stable power-supplying voltage, improves load power factor, and correcting load is asymmetric, suppresses the part high order harmonic component and injects electrical network; Adopt Traction Substation of Electric Railway reactive power compensator of the present invention to carry out reactive power compensation and reactive power can not take place send to electrical network, so its operational reliability is very high and it is simple to safeguard.
The present invention efficiently solve existing electric railway traction power supply system reactive power compensator can't adapt to fast-changing load, can't stable power-supplying voltage, operational reliability is poor and cost is high problem, be applicable to the electric railway traction power supply system electric power system carried out reactive power compensation and harmonic wave suppresses.
Description of drawings
Fig. 1 is first kind of structural representation of the present invention.
Fig. 2 is second kind of structural representation of the present invention.
Fig. 3 is the third structural representation of the present invention.
Among the figure: the extraordinary single-phase transformer of 1-, 2-casing power distribution equipment, 3-capacitor, 4-reactor, 5-noncontacting switch, 6-contactor.
Embodiment
Embodiment one
As shown in Figure 1, the Traction Substation of Electric Railway reactive power compensator comprises extraordinary single-phase transformer 1 and casing power distribution equipment 2; The some groups of reactive power compensation branch roads that formed by contact device, capacitor 3, reactor 4 serial connections are installed in the casing power distribution equipment 2, and each two ends of organizing the reactive power compensation branch road all links to each other with the secondary side of extraordinary single-phase transformer 1;
The secondary side of extraordinary single-phase transformer 1 comprises one group of winding, and winding has centre tap; Each two ends of organizing the reactive power compensation branch road all with have tapped winding and link to each other;
Each contact device of organizing in the reactive power compensation branch road is noncontacting switch 5;
During concrete enforcement, be serially connected with switch with knifeshaped fuse (or circuit breaker), zinc oxide arrester and fuse between the secondary side of extraordinary single-phase transformer and the reactive power compensation branch road;
During work, the reactive power compensation branch road adopts the noncontacting switch switching, can adapt to load variations fast, effectively improves load power factor, reactive power does not take place send to electrical network.
Embodiment two
As shown in Figure 2, the Traction Substation of Electric Railway reactive power compensator comprises extraordinary single-phase transformer 1 and casing power distribution equipment 2; The some groups of reactive power compensation branch roads that formed by contact device, capacitor 3, reactor 4 serial connections are installed in the casing power distribution equipment 2, and each two ends of organizing the reactive power compensation branch road all links to each other with the secondary side of extraordinary single-phase transformer 1;
The secondary side of extraordinary single-phase transformer 1 comprises two groups of windings, and wherein one group of winding has centre tap; Each two ends of organizing the reactive power compensation branch road links to each other with two groups of windings respectively;
Each contact device of organizing in the reactive power compensation branch road is noncontacting switch 5;
During concrete enforcement, be serially connected with switch with knifeshaped fuse (or circuit breaker), zinc oxide arrester and fuse between the secondary side of extraordinary single-phase transformer and the reactive power compensation branch road;
During work, the reactive power compensation branch road adopts the noncontacting switch switching, can adapt to load variations fast, effectively improves load power factor, reactive power does not take place send to electrical network.
Embodiment three
As shown in Figure 3, the Traction Substation of Electric Railway reactive power compensator comprises extraordinary single-phase transformer 1 and casing power distribution equipment 2; The some groups of reactive power compensation branch roads that formed by contact device, capacitor 3, reactor 4 serial connections are installed in the casing power distribution equipment 2, and each two ends of organizing the reactive power compensation branch road all links to each other with the secondary side of extraordinary single-phase transformer 1;
The secondary side of extraordinary single-phase transformer 1 comprises two groups of windings, and wherein one group of winding has centre tap; Each two ends of organizing the reactive power compensation branch road links to each other with two groups of windings respectively;
Be noncontacting switch 5 with the contact device in having the some groups of reactive power compensation branch roads that tapped winding links to each other, be contactor 6 with having all the other contact devices of respectively organizing in the reactive power compensation branch road that tapped winding links to each other, the contact device of respectively organizing in the reactive power compensation branch road that links to each other with another group winding is noncontacting switch 5;
During concrete enforcement, be serially connected with switch with knifeshaped fuse (or circuit breaker), zinc oxide arrester and fuse between the secondary side of extraordinary single-phase transformer and the reactive power compensation branch road;
During work, the reactive power compensation branch road adopts the fixedly reactive power compensation of contactor switching, adopts the noncontacting switch switching to carry out dynamic passive compensation.
In above-mentioned all embodiment; the Traction Substation of Electric Railway reactive power compensator is all according to power load reactive power demand; by after the sampling analysis of computer measurement and control protection system the dynamic compensation branch road being sent the switching instruction, finished the dynamic compensation of reactive power by the intelligent contactless switch in the compensation branch road.
Claims (5)
1. a Traction Substation of Electric Railway reactive power compensator is characterized in that: comprise extraordinary single-phase transformer (1) and casing power distribution equipment (2); The some groups of reactive power compensation branch roads that formed by contact device, capacitor (3), reactor (4) serial connection are installed in the casing power distribution equipment (2), and each two ends of organizing the reactive power compensation branch road all links to each other with the secondary side of extraordinary single-phase transformer (1).
2. Traction Substation of Electric Railway reactive power compensator according to claim 1, it is characterized in that: the secondary side of extraordinary single-phase transformer (1) comprises one group of winding, and winding has centre tap; Each two ends of organizing the reactive power compensation branch road all with have tapped winding and link to each other.
3. Traction Substation of Electric Railway reactive power compensator according to claim 1, it is characterized in that: the secondary side of extraordinary single-phase transformer (1) comprises two groups of windings, wherein one group of winding has centre tap; Each two ends of organizing the reactive power compensation branch road links to each other with two groups of windings respectively.
4. according to claim 1 or 2 or 3 described Traction Substation of Electric Railway reactive power compensators, it is characterized in that: each contact device of organizing in the reactive power compensation branch road is noncontacting switch (5).
5. Traction Substation of Electric Railway reactive power compensator according to claim 3, it is characterized in that: be noncontacting switch (5) with the contact device in having the some groups of reactive power compensation branch roads that tapped winding links to each other, be contactor (6) with having all the other contact devices of respectively organizing in the reactive power compensation branch road that tapped winding links to each other, the contact device of respectively organizing in the reactive power compensation branch road that links to each other with another group winding is noncontacting switch (5).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100676716A CN102110986B (en) | 2011-03-21 | 2011-03-21 | Reactive power compensation device for traction substation in electrified railway |
| PCT/CN2012/000309 WO2012126271A1 (en) | 2011-03-21 | 2012-03-12 | Electrified railway traction substation reactive power compensation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100676716A CN102110986B (en) | 2011-03-21 | 2011-03-21 | Reactive power compensation device for traction substation in electrified railway |
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| Publication Number | Publication Date |
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| CN102110986A CN102110986A (en) | 2011-06-29 |
| CN102110986B true CN102110986B (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100676716A Active CN102110986B (en) | 2011-03-21 | 2011-03-21 | Reactive power compensation device for traction substation in electrified railway |
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| Country | Link |
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| CN (1) | CN102110986B (en) |
| WO (1) | WO2012126271A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018202279A1 (en) * | 2017-05-02 | 2018-11-08 | Siemens Aktiengesellschaft | Flexible reactive power compensation |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110986B (en) * | 2011-03-21 | 2013-08-07 | 山西广福工程技术有限公司 | Reactive power compensation device for traction substation in electrified railway |
| CN105576668B (en) * | 2014-10-11 | 2019-10-01 | 湖南电器科学研究院有限公司 | Passive filtering and reactive power compensator based on magnetic control tuning |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2309659Y (en) * | 1997-10-08 | 1999-03-03 | 刘倬云 | Reactive dynamic compensating device for tracting power supply system |
| CN1134093C (en) * | 2001-06-02 | 2004-01-07 | 陈君诚 | High-voltage contact-less reactive power compensator |
| CN2533603Y (en) * | 2002-01-13 | 2003-01-29 | 冯申荣 | Electric power filtering and dynamic reactive compensation device |
| CN100334787C (en) * | 2004-07-31 | 2007-08-29 | 华中科技大学 | Transformer type adjustable reactor and static reactive compensator compose of it |
| CN101068082B (en) * | 2007-03-28 | 2011-05-25 | 中国南车集团株洲电力机车研究所 | Comprehensive compensating device and method |
| JP4934601B2 (en) * | 2008-01-25 | 2012-05-16 | 西日本旅客鉄道株式会社 | Compensation transformer |
| CN201388062Y (en) * | 2009-04-21 | 2010-01-20 | 北京森硕电气设备有限公司 | Special dynamic reactive power compensation device for electrified railway |
| CN101662146A (en) * | 2009-07-21 | 2010-03-03 | 广州智光电气股份有限公司 | Traction inphase power supply device for track electric locomotive |
| CN101882788B (en) * | 2009-09-14 | 2013-09-18 | 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 |
| CN102110986B (en) * | 2011-03-21 | 2013-08-07 | 山西广福工程技术有限公司 | Reactive power compensation device for traction substation in electrified railway |
-
2011
- 2011-03-21 CN CN2011100676716A patent/CN102110986B/en active Active
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2012
- 2012-03-12 WO PCT/CN2012/000309 patent/WO2012126271A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018202279A1 (en) * | 2017-05-02 | 2018-11-08 | Siemens Aktiengesellschaft | Flexible reactive power compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102110986A (en) | 2011-06-29 |
| WO2012126271A1 (en) | 2012-09-27 |
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