CN205945062U - Traction substation higher harmonic first -order high pass filtering system - Google Patents
Traction substation higher harmonic first -order high pass filtering system Download PDFInfo
- Publication number
- CN205945062U CN205945062U CN201620788339.7U CN201620788339U CN205945062U CN 205945062 U CN205945062 U CN 205945062U CN 201620788339 U CN201620788339 U CN 201620788339U CN 205945062 U CN205945062 U CN 205945062U
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- China
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- resistance
- input
- traction substation
- circuit breaker
- vacuum circuit
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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
- Y02E40/40—Arrangements for reducing harmonics
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model discloses a traction substation higher harmonic first -order high pass filtering system, solution higher harmonic makes the line related because of the higher harmonic overvoltage to the used electric system's of traction substation influence, arouses the problem of stopping on the frequent way of electric locomotive, first -order high pass filtering system is introduced by input terminal in to the traction substation power supply line, draw the power supply line met a vacuum circuit breaker K1 through terminal in input, a vacuum circuit breaker K1's output is connected in filter capacitance C's input, filter capacitance C's output is connected in first resistance R1's input, filter capacitance C's output is connected in the 2nd vacuum circuit breaker K2's input, the 2nd vacuum circuit breaker K2's output is connected in second resistance R2's input, first resistance R1's output and second resistance R2's output are connected in traction substation ground line terminal.
Description
Technical field：
This utility model is relevant with 27.5kV power system of electric railway.
Background technology：
Harmonic problem is a problem just having existed always since electric railway is born, and the AC-DC locomotive of early stage produces
Raw harmonic current frequency is relatively low, mainly 3 times, 5 times, 7 times, 9 inferior harmonic currents, generally passes through to install additional on traction bus
The method of single tuned filter, is reduced to the voltage integrated aberration rate at 27.5kV incoming power in tolerance band.
Orthogonal locomotive is handed over to put into effect with motor-car, high-power locomotive etc., the form of expression of harmonic problem there occurs change,
As a kind of nonlinear load, its injection tractive power supply system is odd harmonic electric current, from 3 subharmonic currents until more than 60
Subharmonic current has content, hands over orthogonal locomotive to decline to a great extent to the low-order harmonic current amplitude that tractive power supply system injects, but
Higher harmonic current content becomes relative abundance, from the point of view of the friendship orthogonal locomotive situation putting into operation at present, basically there exist two humorous
Ripple electric current group, one is distributed across equivalent switching frequency ± 1 and the harmonic current group of ± 3 times, and another is then distributed across 50 times
Harmonic current group between 60 times（Depend on different type of locomotive）.
Either low-order harmonic electric current or higher harmonic current, is likely to have influence on tractive power supply system relevant device
Safe and reliable operation it is also possible to have influence on from tractive power supply system obtain electric energy electric locomotive reliability service.
For handing over orthogonal locomotive, the harm that existing harmonic current injection Traction networks bring mainly has：
1st, cause the damage to voltage-sensitive equipment, such as spark gap damages, compensation device overvoltage is tripped, change overvoltage used
Tripping operation, alternating current-direct current screen fault, electric substation's living electric apparatus damage etc..
2nd, during locomotive operation because overvoltage and car locking, cause train way to stop, affect traffic safety.Higher hamonic wave simultaneously
Electric current also can form interference to the information in transmitting procedure.
Utility model content：
The purpose of this utility model is to provide a kind of suppression infiltration to low-pressure system for the harmonic current, improves low-voltage electrical and sets
The traction substation higher hamonic wave single order high-pass filtering system of the safety of standby running environment.
This utility model is realized in：
Traction substation higher hamonic wave single order high-pass filtering system, traction power supply line passes through filter capacitor, resistance forms
Harmonic filter is grounded, and traction substation supply lines introduces single order high-pass filtering system, traction power supply line warp by input terminal in
Terminal in connects the input of the first vacuum circuit breaker K1, and the outfan of the first vacuum circuit breaker K1 is connected to the defeated of filter capacitor C
Enter end, the outfan of filter capacitor C is connected to the input of first resistor R1, it is true that the outfan of filter capacitor C is connected to second
The input of empty chopper K2, the outfan of the second vacuum circuit breaker K2 is connected to the input of second resistance R2, first resistor
The outfan of the outfan of R1 and second resistance R2 is connected to traction substation ground terminal, and the resistance of first resistor is more than the second electricity
The resistance of resistance.
First and second resistance ratio：First resistor R1：Second resistance R2=30：1, filter capacitor C=1-5F（According to not
With engineering adjustment）.
When single order high-pass filtering system does not access traction substation supply line, first and second vacuum circuit breaker K1, K2 is
It is in open-circuit condition, when traction substation needs to put into higher hamonic wave governing system, first the first vacuum circuit breaker K1 is thrown
Enter to closure state, now, traction substation supply lines starts filter capacitor C is charged through the first vacuum circuit breaker K1,
Because the resistance of first resistor R1 is higher, cushioning effect is served to the input of filter capacitor, filter capacitor is put into electrical network
Impact fall below minimum,
When electric capacity C charging voltage to be filtered reaches setting voltage 20kv value, put into the second vacuum circuit breaker K2 to closed form
State, because the closure of the second vacuum circuit breaker K2 is so that second resistance R2 is in parallel with the generation of first resistor R1, second resistance R2
It is incorporated to reach the design parameter of whole circuit and filter from 3 subharmonic currents up to 60 multiple harmonic electric currents, simultaneously because the
The value of two resistance R2 is far below the value of first resistor R1, and this also will substantially reduce the active loss of first resistor R1.
Operation principle of the present utility model is：On the basis of single order high pass filter, by Promethean design, in single order
Increase by two killer switches in circuit of high pass filter, the resistor one in single order circuit of high pass filter is divided into simultaneously
Two, thus prevented it has been generally acknowledged that the loss of single order high pass filter fundamental wave big, the condenser capacity of needs is also big to ask at all
Topic, is provided with good engineering application value.
The beneficial effects of the utility model are as follows：
Fundamentally solve the impact to electrical system used by traction substation for the higher hamonic wave, solve line related because of height
Subharmonic overvoltage, causes electric locomotive frequently to stop problem on the way；Through hanging net operation test, line related harmonics level reaches
Relevant national standard requires, and electric locomotive way is stopped problem and is fundamentally resolved.
This utility model circuit is simple, operation and maintenance low cost, by the input of two switches, exits, it is right to complete
The input application of the higher hamonic wave governing system of Traction networks 27.5kV bus, controls simple, active loss is little, and caloric value is low, can
High by property；This utility model achieves the higher hamonic wave to Traction networks 27.5kV bus and administers, and solves line related because of high order
Harmonic wave overvoltage, causes electric locomotive frequently to stop problem on the way；Through hanging net operation test, line related harmonics level has reached state
Family's relevant criterion requires, and electric locomotive way is stopped problem and is fundamentally resolved.
Brief description：
Fig. 1 is this utility model electrical schematic diagram.
Specific embodiment：
This utility model is made up of vacuum circuit breaker K1, K2, filter capacitor C, resistance R1, R2.Wherein, traction substation
27.5kV supply lines is accessed by input terminal in terminal, is connected to the input of chopper K1, the outfan of K1 is connected to filtering
The input of electric capacity C, the outfan of filter capacitor C is connected to the input of resistor R1, meanwhile, the outfan of filter capacitor C
It is connected to the input of chopper K2, the outfan of chopper K2 is connected to the input of resistor R2, the output of resistor R1
The outfan of end and resistor R2 is simultaneously coupled to traction substation ground terminal.In Fig. 1,1 end is input, and 2 ends are outfan.
R1=3000 ohm, R2=100 ohm, filter capacitor C=3.5F.
Functional realiey of the present utility model：
When single order high-pass filtering system does not access traction substation supply line, vacuum circuit breaker K1, K2 are all in leaving
Line state.When traction substation needs to put into higher hamonic wave governing system, first vacuum circuit breaker K1 is put into closed form
State, now, traction substation 27.5kV supply lines starts filter capacitor C is charged through vacuum circuit breaker K1, for avoiding filtering
The input of ripple electric capacity C produces impact to power supply network, during design, the value of resistance R1 is far longer than resistance R2, due to resistance R1's
Resistance is higher, serves cushioning effect to the input of capacitor, and the impact that capacitor is put into electrical network falls below minimum.
When electric capacity C charging voltage to be filtered reaches setting voltage value, put into vacuum circuit breaker K2 to closure state, due to true
The closure of empty chopper K2 so that resistance R2 and resistance R1 produce in parallel, because the value of resistance R2 taking much smaller than resistance R1
Value, therefore, the design parameter of whole circuit is reached the design setting value filtering higher hamonic wave by being incorporated to of resistance R2, simultaneously because
The value of resistance R2 is far below the value of resistance R1, and this also will substantially reduce the active loss of R1.
Experimental example：
Single order high-pass filtering system for field put into operation front haulage power line harmonics monitor measured waveform be sawtooth curve.
Single order high-pass filtering system for field put into operation rear haulage power line harmonics monitor measured waveform be smoothed curve.
This utility model single order high-pass filtering system, before putting into operation in non-scene, almost all can occur once or several times daily
Accident is stopped on train way, does not occur once stopping on the way accident after this utility model puts into operation at the scene.
Claims (2)
1. traction substation higher hamonic wave single order high-pass filtering system, traction power supply line pass through filter capacitor, resistance composition humorous
Wave filter ground connection is it is characterised in that traction substation supply lines introduces single order high-pass filtering system, traction by input terminal in
Supply lines connects the input of the first vacuum circuit breaker K1 through terminal in, and the outfan of the first vacuum circuit breaker K1 is connected to filtered electrical
Hold the input of C, the outfan of filter capacitor C is connected to the input of first resistor R1, and the outfan of filter capacitor C is connected to
The input of the second vacuum circuit breaker K2, the outfan of the second vacuum circuit breaker K2 is connected to the input of second resistance R2, the
The outfan of the outfan of one resistance R1 and second resistance R2 is connected to traction substation ground terminal, and the resistance of first resistor is more than
The resistance of second resistance.
2. traction substation higher hamonic wave single order high-pass filtering system according to claim 1 is it is characterised in that first and second
Resistance ratio：First resistor R1：Second resistance R2=30：1, filter capacitor C=1-5F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620788339.7U CN205945062U (en) | 2016-07-26 | 2016-07-26 | Traction substation higher harmonic first -order high pass filtering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620788339.7U CN205945062U (en) | 2016-07-26 | 2016-07-26 | Traction substation higher harmonic first -order high pass filtering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205945062U true CN205945062U (en) | 2017-02-08 |
Family
ID=57926064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620788339.7U Withdrawn - After Issue CN205945062U (en) | 2016-07-26 | 2016-07-26 | Traction substation higher harmonic first -order high pass filtering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205945062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208057A (en) * | 2016-07-26 | 2016-12-07 | 四川汇友电气有限公司 | Traction substation higher hamonic wave single order high-pass filtering system |
-
2016
- 2016-07-26 CN CN201620788339.7U patent/CN205945062U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208057A (en) * | 2016-07-26 | 2016-12-07 | 四川汇友电气有限公司 | Traction substation higher hamonic wave single order high-pass filtering system |
| CN106208057B (en) * | 2016-07-26 | 2018-07-06 | 四川汇友电气有限公司 | Traction substation higher hamonic wave single order high-pass filtering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20180706 |