CN101145692B - Drawing network high and second harmonic wave and resonance and transient voltage restraint device - Google Patents
Drawing network high and second harmonic wave and resonance and transient voltage restraint device Download PDFInfo
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- CN101145692B CN101145692B CN2007101206209A CN200710120620A CN101145692B CN 101145692 B CN101145692 B CN 101145692B CN 2007101206209 A CN2007101206209 A CN 2007101206209A CN 200710120620 A CN200710120620 A CN 200710120620A CN 101145692 B CN101145692 B CN 101145692B
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- capacitor
- damping filter
- filter circuit
- inductance
- resistance
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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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Abstract
The invention relates to a higher harmonic wave resonance and transient overvoltage suppression device for an AC traction electric network of an electric railway, which comprises a circuit breaker, an isolating switch, a capacitor, a resistor, a reactor and relay protection equipment, wherein a second-order damping filter circuit is normally arranged in a subzone at the end of a feeding section or in the middle thereof; when the suppression device is used in the 25 KV traction electric network, the second-order damping filter circuit is arranged between a contact system (T) and a steel rail (R), and when the suppression device is used in the 2 is multiplied by 25 KV traction electric network with an autotransformer (AT) power supply, the two second-order damping filter circuit are used, one is arranged between the contact system and the steel rail, the other one is arranged between a positive feeder (F) and the steel rail, and parameters thereof are identical. The invention can suppress and damp the higher harmonic wave resonance and transient overvoltage by changing a topological structure and the network parameters of the traction electric network, and all the resistor, the capacitor and the inductor elements are passive, so that control equipments are not required. The invention has the advantages of simple structure, low equipment capacity, and free of maintenance.
Description
Technical field
The invention belongs to the electric railway technical field, specifically, relate to a kind of traction net height subharmonic resonance and temporary overvoltage restraining device that adopts passive resistance, inductance, capacity cell to constitute.
Background technology
Motor train unit of moving on the China railways and high-power electric locomotive begin generally to adopt the friendship of PWM modulation one to hand over the transmission circuit always.The rectification type electric locomotive always of friendship as compared with the past, present motor train unit and electric locomotive harmonic content are whole obviously to be reduced, but harmonic spectrum broadens, and can reach several kHz.Because traction host body skeleton is a conductor transmission line more than a section, intrinsic distributed constant characteristic itself, the resonance that certain form takes place for traction net distributed capacitance in parallel and series arrangement impedance and transformer impedance and source impedance under certain frequency is inevitable.In case the current spectrum of motor train unit or electric locomotive covers traction net resonance frequency and reaches certain amplitude, then can excite traction net height subharmonic resonance, cause harmonic current to amplify, and may produce higher resonance overvoltage, the safe and stable operation of tractive power supply system is worked the mischief.In addition, because motor train unit and electric locomotive are the fast moving loads, flowed the phenomenon of interruption easily, and rail track complicated condition, driving is subjected to multiple factor affecting, and the very difficult long period of motor train unit and electric locomotive operating condition remains unchanged, and it is continuous that this causes drawing online electromagnetic transient, in case network parameter and service conditions coupling are improper, just cause temporary overvoltage easily.Higher harmonic resonance and temporary overvoltage phenomenon that traction may exist on the net cause train parking accident easily, endanger the safe operation of power supply unit, have a strong impact on the normal transport order of railway.
The present invention provides a kind of inhibition, damping device to higher harmonic resonance and the temporary overvoltage phenomenon that China's electrified sections exists, and can effectively avoid drawing the higher harmonic resonance and the temporary overvoltage of net.
Summary of the invention
The present invention is directed to higher harmonic resonance and temporary overvoltage problem that ac electrified railway traction net exists, a kind of traction net height subharmonic resonance and temporary overvoltage restraining device that is made of passive resistance, electric capacity, inductance element is provided.This restraining device generally is installed in the electric railway section post, is positioned at the supply arm end, and concrete structure and technical parameter according to the traction net mate suitable resistance, electric capacity, inductance value, constitute 2 rank damping filter circuits.
The technical solution adopted for the present invention to solve the technical problems is:
The traction net height subharmonic resonance and the temporary overvoltage restraining device of ac electrified railway, form by circuit breaker, isolating switch, capacitor, resistor, reactor and relay protection device etc., circuit is 2 rank damping filter circuits, it is characterized in that, the electric capacity span is 0.8～2.5 μ F, resistance value scope 100～300 Ω, inductance value 50～250mH; Generally be installed in the section post of supply arm end, also can be installed in the supply arm middle part; When being used for 25kV traction net, 2 rank damping filter circuits are between contact line (T) and the rail (R), when being used for 2 * 25kV autotransformer (AT) Supplied Catenary System, adopt two 2 rank damping filter circuits, one is between contact line and the rail, another is between positive feeder (F) and the rail, two circuit parameter unanimities.
Beneficial effect of the present invention:
Topological structure by changing the traction net and network parameter play inhibition, the damping action to higher harmonic resonance and temporary overvoltage, all adopt passive resistance, electric capacity, inductance element, need not control appliance, have characteristics simple in structure, that place capacity is little, non-maintaining.
Description of drawings
Fig. 1 is used for the circuit theory diagrams of 25kV traction net for the present invention.
Fig. 2 is used for the circuit theory diagrams of 2 * 25kV traction net for the present invention.
Fig. 3 is used for an embodiment of 2 * 25kV traction net for the present invention.
Embodiment
Embodiment 1: as shown in Figure 1, capacitor C 1, resistance R 1, inductance L 1 constitute 2 rank damping filter circuits, and the C1 span is 0.8～2.5 μ F, and R1, span are 100～300 Ω, and the L1 span is 50～250mH, and T represents contact line, and R represents rail.
Embodiment 2: as shown in Figure 2, capacitor C 2, resistance R 2, inductance L 2 constitute one 2 rank damping filter circuit, and capacitor C 3, resistance R 3, inductance L 3 constitute another 2 rank damping filter circuit, two circuit element parameter value unanimities, T represents contact line, and R represents rail, and F represents positive feeder.
Embodiment 3: as shown in Figure 3; C4=C5=1 μ F; R4=R5=150 Ω; L4=L5=200mH, among the embodiment, restraining device links to each other by T, R, the F of three-pole breaker with 2 * 25kV traction net; simultaneously on T line and F line, current transformer CT1 and CT2 are set respectively; secondary circuit is succeeded electric protection equipment, is used for the overcurrent protection to restraining device, the capacitor discharge after voltage transformer in parallel is used to cut off the power supply.
Claims (1)
1. one kind is drawn net height subharmonic resonance and temporary overvoltage restraining device, form by circuit breaker, isolating switch, capacitor, resistor, reactor, it is characterized in that, capacitor C 4, resistance R 4, inductance L 4 constitute one 2 rank damping filter circuit, capacitor C 5, resistance R 5, inductance L 5 constitute another 2 rank damping filter circuit, two 2 rank damping filter circuit component parameters value unanimities, one is connected between contact line T and the rail, and another is connected between positive feeder F and the rail; Restraining device is installed in the section post of 2 * 25kV traction net supply arm end; Simultaneously current transformer CT1 summation current transformer CT2 is set respectively on contact line T line and positive feeder F line, secondary circuit is succeeded electric protection equipment, is used for the overcurrent protection to restraining device; Capacitor C 4 and capacitor C 5 are 1 μ F, and resistance R 4 and resistance R 5 are 150 Ω, and inductance L 4 and inductance L 5 are 200mH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101206209A CN101145692B (en) | 2007-08-22 | 2007-08-22 | Drawing network high and second harmonic wave and resonance and transient voltage restraint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101206209A CN101145692B (en) | 2007-08-22 | 2007-08-22 | Drawing network high and second harmonic wave and resonance and transient voltage restraint device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101145692A CN101145692A (en) | 2008-03-19 |
| CN101145692B true CN101145692B (en) | 2010-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101206209A Expired - Fee Related CN101145692B (en) | 2007-08-22 | 2007-08-22 | Drawing network high and second harmonic wave and resonance and transient voltage restraint device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101145692B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767540B (en) * | 2010-03-12 | 2012-05-30 | 李子晗 | Switch-free switching auto-passing neutral section device for the electric railway |
| CN104085317B (en) * | 2014-06-23 | 2017-01-18 | 北京交通大学 | Absorption device for induced voltage in direct-current electrified railway traction networks |
| CN105223479B (en) * | 2015-10-22 | 2018-07-10 | 江苏省电力公司电力科学研究院 | A kind of extra-high voltage GIS testing on-site impact transient overvoltage suppressing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465203A (en) * | 1993-06-18 | 1995-11-07 | Electric Power Research Institute, Inc. | Hybrid series active/parallel passive power line conditioner with controlled harmonic injection |
| US5731965A (en) * | 1996-06-21 | 1998-03-24 | Wisconsin Alumni Research Foundation | Power line harmonic reduction by hybrid parallel active/passive filter system with square wave inverter and DC bus control |
| CN2580654Y (en) * | 2002-09-24 | 2003-10-15 | 杭州华烨电气有限公司 | Passive single-phase filter circuit |
| CN2657258Y (en) * | 2003-10-10 | 2004-11-17 | 施用晔 | Wide-band passive filter reactive power compensating device |
| CN1897393A (en) * | 2006-06-23 | 2007-01-17 | 北京四方清能电气电子有限公司 | Compensator for electric-railway non-power compensation and electric-energy quality control |
-
2007
- 2007-08-22 CN CN2007101206209A patent/CN101145692B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465203A (en) * | 1993-06-18 | 1995-11-07 | Electric Power Research Institute, Inc. | Hybrid series active/parallel passive power line conditioner with controlled harmonic injection |
| US5731965A (en) * | 1996-06-21 | 1998-03-24 | Wisconsin Alumni Research Foundation | Power line harmonic reduction by hybrid parallel active/passive filter system with square wave inverter and DC bus control |
| CN2580654Y (en) * | 2002-09-24 | 2003-10-15 | 杭州华烨电气有限公司 | Passive single-phase filter circuit |
| CN2657258Y (en) * | 2003-10-10 | 2004-11-17 | 施用晔 | Wide-band passive filter reactive power compensating device |
| CN1897393A (en) * | 2006-06-23 | 2007-01-17 | 北京四方清能电气电子有限公司 | Compensator for electric-railway non-power compensation and electric-energy quality control |
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| CN101145692A (en) | 2008-03-19 |
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Owner name: BEIJIN HUIZE ELECTRIC POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WAN LIANG Effective date: 20141209 |
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Effective date of registration: 20141209 Address after: 100089, No. 1007, building 13, West Tower, Haidian District, Zhichun Road, Beijing, Luozhuang Patentee after: Beijing Huize Power Technology Co.,Ltd. Address before: 100012 new neighborhood 3-3-902, Beiyuan 5, Beiyuan, Beijing, Chaoyang District Patentee before: Wan Liang |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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