CN108092487B - Device for suppressing track circuit harmonic wave - Google Patents

Device for suppressing track circuit harmonic wave Download PDF

Info

Publication number
CN108092487B
CN108092487B CN201711120928.3A CN201711120928A CN108092487B CN 108092487 B CN108092487 B CN 108092487B CN 201711120928 A CN201711120928 A CN 201711120928A CN 108092487 B CN108092487 B CN 108092487B
Authority
CN
China
Prior art keywords
track circuit
tuning
matching unit
line
suppressing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201711120928.3A
Other languages
Chinese (zh)
Other versions
CN108092487A (en
Inventor
刘志明
李文涛
王智新
杨晓峰
杨轶轩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRSC Research and Design Institute Group Co Ltd
Original Assignee
CRSC Research and Design Institute Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRSC Research and Design Institute Group Co Ltd filed Critical CRSC Research and Design Institute Group Co Ltd
Priority to CN201711120928.3A priority Critical patent/CN108092487B/en
Publication of CN108092487A publication Critical patent/CN108092487A/en
Application granted granted Critical
Publication of CN108092487B publication Critical patent/CN108092487B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0038—Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control
    • 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

Abstract

The device for suppressing the harmonic wave of the track circuit provided by the embodiment of the invention is arranged in the track circuit, the track circuit comprises a first line and a second line which are parallel, and the device comprises: the mechanical section hollow coil and the tuning matching unit; the first end of the mechanical section hollow coil is connected with a first line of the track circuit, and the second end of the mechanical section hollow coil is connected with a second line of the track circuit; the tuning matching unit is connected with the track circuit and is connected with the mechanical section hollow coil in parallel to form a parallel resonance circuit. According to the device for inhibiting the track circuit harmonic waves, the mechanical section hollow coil is used for balancing traction current and stabilizing impedance of a tuning area, power frequency interference can be filtered, the mechanical section hollow coil and the tuning matching unit are connected in parallel to form a parallel resonance circuit, pole impedance of a receiving end of the track circuit is formed, effective frequency shift signals can be transmitted into a room, and meanwhile interference of the harmonic waves to indoor equipment is prevented.

Description

Device for suppressing track circuit harmonic wave
Technical Field
The invention relates to the field of rail transit, in particular to a device for inhibiting harmonic waves of a rail circuit.
Background
The track circuit is a circuit formed by a steel rail line and steel rail insulation, is used for automatically and continuously detecting whether the section of the line is occupied by rolling stock, and is also used for controlling a signal device or a switch device so as to ensure equipment for driving safety. As shown in fig. 1, the electric railway conductive interference, that is, the unbalanced traction current has a common transmission channel with the signal current of the track circuit. In practical application, the traction current in the steel rail is not equal any more due to unbalanced factors, so that differential mode current is formed, the differential mode current and the receiving end impedance form receiving end rail surface voltage, the receiving end rail surface voltage is transmitted to indoor receiving equipment, and direct current components, power frequency fundamental waves and harmonic components of the differential mode current formed by the traction current influence signal current of a rail circuit. When the relationship between the harmonic frequency in the traction current and the adopted frequency is fixed, the aliasing of the signal inevitably occurs, and if the amount of high-frequency aliasing is high enough, the following phenomena occur: (1) voltage fluctuation of the rail-out and branch collector and voltage signal fluctuation of collection monitored by a microcomputer trigger monitoring and alarming in severe cases; (2) receiver delay drop: because the harmonic interference voltage is continuously higher than the judgment threshold of the receiver, the slow release time exceeds the specified value at the moment, and the interlock can not be unlocked. Therefore, the track circuit device needs to be protected from conductive interference from the aspect of system design.
At present, a choke transformer and an in-station matching unit may be connected in parallel beside the mechanical section of each track circuit section for suppressing harmonic components in the traction current. However, the existing in-station matching unit only comprises a transformer module and a lightning protection module, and does not have a resonance circuit for inhibiting interference of power frequency higher harmonics, so that interference signals directly enter the indoor through the transformer without being filtered, and cause interference to indoor equipment.
Disclosure of Invention
The embodiment of the invention provides a device for inhibiting track circuit harmonic waves, which aims to solve the technical problem of interference on indoor equipment.
The technical scheme is as follows:
an apparatus for suppressing harmonics of a track circuit, the apparatus being installed in a track circuit comprising first and second parallel lines, the apparatus comprising: the mechanical section hollow coil and the tuning matching unit;
the first end of the mechanical section air core coil is connected with the first line of the track circuit, and the second end of the mechanical section air core coil is connected with the second line of the track circuit;
the tuning matching unit is connected with the track circuit and is connected with the mechanical section hollow coil in parallel to form a parallel resonance circuit.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the mechanical air-core coil includes a first resistive element and a second inductive element connected in series;
a first end of the first resistive element is connected to a first line of the track circuit, a second end of the first resistive element is connected to a first end of the first inductive element, and a second end of the first inductive element is connected to a second line of the track circuit.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the first resistive element and the second inductive element are provided with a first configuration parameter, and the first resistive element and the second inductive element having the first configuration parameter are mounted on a track circuit with a first frequency.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the first resistive element and the second inductive element are provided with a second configuration parameter, and the first resistive element and the second inductive element having the second configuration parameter are mounted on a track circuit with a second frequency.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, a first end of the tuning matching unit is connected to the track circuit, and a second end of the tuning matching unit is connected to an indoor device through a cable.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the tuning matching unit includes: the circuit comprises a tuning unit, a matching unit and a second inductance element;
the tuning unit is connected with the second inductance element in series, one end of the tuning unit and one end of the second inductance element after being connected in series are connected with a first line of the track circuit, and the other end of the tuning unit and the second inductance element after being connected in series are connected with a second line of the track circuit;
the matching unit is connected with the tuning unit in parallel, and the matching unit connected with the tuning unit in parallel is connected with indoor equipment through a cable.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the tuning unit includes a first capacitive element and a third inductive element connected in series;
the first end of the first capacitive element is connected to the track circuit, the second end of the first capacitive element is connected to the first end of the third inductive element, and the second end of the third inductive element is connected to the second inductive element.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the tuning unit includes a second capacitive element, a third capacitive element, and a fourth inductive element;
the second capacitance element is connected in series with the fourth inductance element, and the third capacitance element is connected in parallel with the second capacitance element and the fourth inductance element which are connected in series.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the matching unit includes a transformer and a common mode inductor;
the primary side of the transformer is connected with the tuning unit in parallel, and the secondary side of the transformer is connected with the common-mode inductor.
Optionally, in another apparatus for suppressing track circuit harmonics according to the present invention, the tuning matching unit is connected to the track circuit through a copper plate terminal.
The device for suppressing the harmonic wave of the track circuit provided by the embodiment of the invention is arranged in the track circuit, the track circuit comprises a first line and a second line which are parallel, and the device comprises: the mechanical section hollow coil and the tuning matching unit; the first end of the mechanical section hollow coil is connected with a first line of the track circuit, and the second end of the mechanical section hollow coil is connected with a second line of the track circuit; the tuning matching unit is connected with the track circuit and is connected with the mechanical section hollow coil in parallel to form a parallel resonance circuit. According to the device for inhibiting the track circuit harmonic waves, the mechanical section hollow coil is used for balancing traction current and stabilizing impedance of a tuning area, power frequency interference can be filtered, the mechanical section hollow coil and the tuning matching unit are connected in parallel to form a parallel resonance circuit, pole impedance of a receiving end of the track circuit is formed, effective frequency shift signals can be transmitted into a room, and meanwhile interference of the harmonic waves to indoor equipment is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional traction current and a signal current transmitted on a steel rail together;
FIG. 2 is a schematic structural diagram of an apparatus for suppressing track circuit harmonics according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an air-core coil of a mechanical node in a device for suppressing track circuit harmonics according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another structure of a device for suppressing track circuit harmonics according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a tuning matching unit in the apparatus for suppressing track circuit harmonics according to the present invention;
fig. 6 is a schematic structural diagram illustrating a connection between a tuning matching unit and a track circuit in an apparatus for suppressing track circuit harmonics according to an embodiment of the present invention;
fig. 7 is another schematic structural diagram of a tuning matching unit in a device for suppressing track circuit harmonics according to an embodiment of the present invention connected to a track circuit;
fig. 8 is a schematic structural diagram of a tuning unit in the apparatus for suppressing track circuit harmonics according to the present invention;
fig. 9 is a schematic structural diagram of a tuning unit in the apparatus for suppressing track circuit harmonics according to the present invention;
fig. 10 is a schematic structural diagram of another tuning matching unit in the apparatus for suppressing track circuit harmonics according to the present invention;
fig. 11 is a schematic structural diagram of a connection between a track circuit and a device for suppressing track circuit harmonics according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without inventive step, are intended to be within the scope of the present invention. In the present specification and the drawings, substantially the same elements and functions will be denoted by the same reference numerals, and repetitive description thereof will be omitted. Moreover, descriptions of functions and constructions well known in the art may be omitted for clarity and conciseness.
In order to solve the above-mentioned problem, an embodiment of the present invention provides an apparatus for suppressing track circuit harmonics, so as to eliminate the technical problem of interference to indoor equipment.
The following describes a device for suppressing track circuit harmonics according to an embodiment of the present invention.
Referring to fig. 2, fig. 2 illustrates a schematic diagram of a structure of the apparatus for suppressing track circuit harmonics.
The device for suppressing track circuit harmonics is installed in a track circuit comprising a first track 1 'and a second track 2' in parallel. The device for suppressing track circuit harmonics comprises: mechanical section air core coil 1, tuning matching unit 2.
The first end of the mechanical section hollow coil 1 is connected with a first line 1 'of the track circuit, and the second end of the mechanical section hollow coil 1 is connected with a second line 2' of the track circuit;
the tuning matching unit 2 is connected with the track circuit and is connected with the mechanical section hollow coil 1 in parallel to form a parallel resonant circuit.
The mechanical section hollow coil 1 is used for balancing traction current and stabilizing impedance of a tuning area, and can filter power frequency interference. Mechanical festival hollow coil 1 is used for the business turn over station mouth department, and mechanical festival hollow coil 1 connects in parallel with harmonious matching unit 2 and forms parallel resonance circuit, forms track circuit receiving terminal high impedance, also called polar impedance, can spread into indoor with effectual frequency shift signal, prevents simultaneously that the harmonic from causing the interference to the indoor equipment.
Referring to fig. 3, fig. 3 shows a schematic diagram of a mechanical segment air core coil. The mechanical hollow core coil comprises a first resistive element 11 and a second inductive element 12 connected in series. Referring to fig. 4, a first terminal of the first resistive element 11 is connected to the first line 1 'of the track circuit, a second terminal of the first resistive element 11 is connected to a first terminal of the first inductive element 12, and a second terminal of the first inductive element 12 is connected to the second line 2' of the track circuit.
The frequencies on the track circuit can be divided into two frequencies, one is a first frequency of 1700Hz and 2000Hz, and the other is a second frequency of 2300Hz and 2600 Hz. For track circuits with different frequencies, a first resistance element and a second inductance element in the mechanical node air-core coil are provided with different configuration parameters so as to meet the requirements of presenting low impedance to 50Hz higher harmonics and filtering 50Hz power frequency interference.
Aiming at first frequencies of 1700Hz and 2000Hz, the first resistance element and the second inductance element are provided with first configuration parameters, and the first resistance element and the first inductance element with the first configuration parameters are arranged on a track circuit of the first frequency.
And for a second frequency of 2300Hz and 2600Hz, the first resistance element and the second inductance element are provided with second configuration parameters, and the first resistance element and the first inductance element with the second configuration parameters are arranged on a track circuit of the second frequency.
Referring to table 1, table 1 shows a case of values of configuration parameters of the first resistive element and the second inductive element in the mechanical node air-core coil for first frequencies of 1700Hz and 2000Hz, and second frequencies of 2300Hz and 2600Hz, and it can be understood that those skilled in the art can set configuration parameters of other specifications according to actual situations to achieve the same effect.
TABLE 1 mechanical section air core coil configuration parameter values
Frequency (Hz) Second inductance element L (μ H) First resistance element R (m omega)
1700 29.6 29.6
2000 28.44 33.58
2300 28.32 33.75
2600 28.25 35.7
In practical application, the second inductance element in the mechanical node air-core coil can be composed of a diameter of 1.53mm and a cross section of 35mm219-strand electromagnetic wire.
Because the configuration parameters of the mechanical section hollow coil present low impedance to 50Hz higher harmonic, the power frequency interference of 50Hz is filtered, and simultaneously, the mechanical section hollow coil and the tuning matching unit form a parallel resonance circuit together to form track circuit receiving end polar impedance, so that effective frequency shift signals can be transmitted into a room, and the interference of harmonic waves to indoor equipment is prevented.
Referring to fig. 4, a first end of the tuning matching unit 2 in the track circuit harmonic suppression apparatus is connected to the track circuit, and a second end of the tuning matching unit 2 is connected to indoor equipment (not shown in fig. 4) through a cable. Wherein, the indoor device may include: transmitters, receivers, attenuators, lightning protection equipment in the station, etc.
The first end of the tuning matching unit 2 is provided with two outgoing lines, wherein one outgoing line is connected with a first line 1 'of the track circuit, and the other outgoing line is connected with a second line 2' of the track circuit.
Referring to fig. 5, the tuning matching unit includes: a tuning unit 21, a second inductive element 22, a matching unit 23. The tuning unit 21 and the second inductance element 22 are connected in series, and one end of the tuning unit 21 and one end of the second inductance element 22 after the series connection are connected to a first line of the track circuit, and the other end of the tuning unit 21 and the second inductance element 22 after the series connection are connected to a second line of the track circuit. The matching unit 23 is connected in parallel to the tuning unit 21, and the matching unit 23 connected in parallel to the tuning unit 21 is connected to the indoor device through a cable.
The tuning matching unit in the embodiment of the invention can be arranged at the mechanical insulation joint. The tuning unit forms series resonance for the frequency shift signals of the adjacent sections, presents zero impedance, realizes the electrical isolation of the signals of the adjacent sections, presents capacitance for the frequency shift signals of the section, forms parallel resonance with the second inductance element, presents polar impedance, and enables the frequency shift signals of the section to be stably transmitted. The matching unit realizes the matching connection of the steel rail impedance and the cable impedance so as to realize the effective transmission of track circuit signals.
In other embodiments of the present invention, referring to fig. 6, the first end of the tuning matching unit 2 has two outgoing lines, one of which is the outgoing line at the end of the second inductance element 22, and the other of which is the outgoing line at the end of the tuning unit 21. The outgoing line at one end of the tuning unit 21 is connected to the first line 1', and the outgoing line at one end of the second inductance element 22 is connected to the second line 2'. The second end of the tuning matching unit 2 is an outgoing line of the matching unit 23, and the matching unit 23 is connected with indoor equipment (not shown in fig. 6) through a cable. Fig. 6 shows a first resistive element 11 of the mechanical segment air core coil and a second inductive element 12 of the mechanical segment air core coil in the above embodiment.
In other embodiments of the present invention, referring to fig. 7, the first end of the tuning matching unit 2 has two outgoing lines, one of which is the outgoing line at the end of the second inductance element 22, and the other of which is the outgoing line at the end of the tuning unit 21. The outgoing line at one end of the tuning unit 21 is connected to the second line 2', and the outgoing line at one end of the second inductance element 22 is connected to the first line 1'. The second end of the tuning matching unit 2 is an outgoing line of the matching unit 23, and the matching unit 23 is connected with indoor equipment (not shown in fig. 7) through a cable. Fig. 7 shows a first resistive element 11 of the mechanical segment air core coil and a second inductive element 12 of the mechanical segment air core coil in the above embodiment.
The first end of the tuning matching unit 2 has two outgoing lines, which outgoing line is connected with the first line 1 'of the track circuit, which outgoing line is connected with the second line 2' of the track circuit, and those skilled in the art can set the two outgoing lines according to practical application conditions.
In the above embodiment, it is mentioned that the frequencies on the track circuit can be divided into two types, one is a first frequency of 1700Hz and 2000Hz, and the other is a second frequency of 2300Hz and 2600Hz, and for track circuits with different frequencies, the first resistive element and the second inductive element in the mechanical node air-core coil are set with different configuration parameters, and accordingly, for track circuits with different frequencies, the tuning unit has different circuit structures.
For a first frequency of 1700Hz, 2000Hz, referring to fig. 8, the tuning unit comprises a first capacitive element 211, a third inductive element 212 in series. A first end of the first capacitive element 211 is connected to the track circuit, a second end of the first capacitive element 211 is connected to a first end of the third inductive element 212, and a second end of the third inductive element 212 is connected to the second inductive element. Wherein the second inductive element can refer to the second inductive element 22 in fig. 5, 6, 7.
For a second frequency of 2300Hz, 2600Hz, the tuning unit comprises a second capacitive element 213, a third capacitive element 125, a fourth inductive element 214, with reference to fig. 9. The second capacitive element 213 is connected in series to the fourth inductive element 214, and the third capacitive element 215 is connected in parallel to the second capacitive element 213 and the fourth inductive element 214 connected in series.
Referring to fig. 10, the matching unit 23 of the tuning matching unit includes a transformer 231 and a common mode inductor 232. The primary side of the transformer 231 is connected in parallel to the tuning unit 21, and the secondary side of the transformer 231 is connected to the common mode inductor 232. The tuning matching unit may be connected to the track circuit through copper plate terminals (U1 copper plate terminal and U2 copper plate terminal in fig. 10).
Referring to fig. 11, the vehicle traveling direction is from left to right, 1 'denotes a first line of the track circuit, and 2' denotes a first line of the track circuit. One end of the mechanical section hollow coil 1 is connected with a first line 1 'of the track circuit, and the other end is connected with a second line 2' of the track circuit. One end of the tuning matching unit 2 is connected with the track circuit, and the other end is connected with the indoor equipment through an SPT (Shielded twisted pair) cable. At a receiving end, the indoor equipment comprises an in-station lightning protection device, an attenuator and a receiver; at a sending end, the indoor equipment comprises an in-station lightning protection device and a transmitter, wherein the in-station lightning protection device is connected with the SPT cable through a cable simulation network. Because the configuration parameters of the mechanical section hollow coil in the track circuit harmonic suppression device present low impedance to 50Hz higher harmonics, 50Hz power frequency interference is filtered out, meanwhile, the mechanical section hollow coil and the tuning matching unit form a parallel resonance circuit together to form track circuit receiving end pole impedance, effective frequency shift signals can be transmitted into a room, and meanwhile, the interference of the harmonics to indoor equipment is prevented.
It should be noted that:
in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Those skilled in the art will understand that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or may substitute some or all of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (7)

1. An apparatus for suppressing harmonics in a track circuit, the apparatus being installed in a track circuit, the track circuit including first and second parallel lines, the apparatus comprising: the mechanical section hollow coil and the tuning matching unit;
the first end of the mechanical section air core coil is connected with the first line of the track circuit, and the second end of the mechanical section air core coil is connected with the second line of the track circuit;
the tuning matching unit is connected with the track circuit and is connected with the mechanical section hollow coil in parallel to form a parallel resonant circuit;
the mechanical hollow joint coil comprises a first resistance element and a first inductance element which are connected in series;
a first end of the first resistive element is connected with a first line of the track circuit, a second end of the first resistive element is connected with a first end of the first inductive element, and a second end of the first inductive element is connected with a second line of the track circuit;
the first resistance element and the first inductance element are provided with first configuration parameters, and the first resistance element and the first inductance element with the first configuration parameters are arranged on a track circuit with a first frequency; the first frequency is 1700Hz and 2000Hz, the first configuration parameters of the first resistance element and the first inductance element are 29.6m Ω and 29.6 μ H respectively when the first frequency is 1700Hz, and the first configuration parameters of the first resistance element and the first inductance element are 33.58m Ω and 28.44 μ H respectively when the first frequency is 2000 Hz;
the first resistance element and the first inductance element are provided with second configuration parameters, and the first resistance element and the first inductance element with the second configuration parameters are arranged on a track circuit with a second frequency; the second frequencies are 2300Hz and 2600Hz, the first configuration parameters of the first resistance element and the first inductance element are 33.75m Ω and 28.32 μ H respectively when the second frequency is 2300Hz, and the first configuration parameters of the first resistance element and the first inductance element are 35.7m Ω and 28.25 μ H respectively when the second frequency is 2600 Hz;
the configuration parameters of the mechanical node hollow coil present low impedance to the higher harmonic of 50 Hz;
the first inductance element in the mechanical node air-core coil is composed of a core wire with a diameter of 1.53mm and a cross section of 35mm219-strand electromagnetic wire.
2. The apparatus for suppressing track circuit harmonics according to claim 1, wherein a first end of the tuning matching unit is connected to the track circuit, and a second end of the tuning matching unit is connected to an indoor device through a cable.
3. The apparatus for suppressing track circuit harmonics according to claim 2, wherein the tuning matching unit comprises: the circuit comprises a tuning unit, a matching unit and a second inductance element;
the tuning unit is connected with the second inductance element in series, one end of the tuning unit and one end of the second inductance element after being connected in series are connected with a first line of the track circuit, and the other end of the tuning unit and the second inductance element after being connected in series are connected with a second line of the track circuit;
the matching unit is connected with the tuning unit in parallel, and the matching unit connected with the tuning unit in parallel is connected with indoor equipment through a cable.
4. The apparatus for suppressing track circuit harmonics according to claim 3, wherein the tuning unit comprises a first capacitive element, a third inductive element connected in series;
the first end of the first capacitive element is connected to the track circuit, the second end of the first capacitive element is connected to the first end of the third inductive element, and the second end of the third inductive element is connected to the second inductive element.
5. The apparatus for suppressing track circuit harmonics according to claim 3, wherein the tuning unit comprises a second capacitive element, a third capacitive element, a fourth inductive element;
the second capacitance element is connected in series with the fourth inductance element, and the third capacitance element is connected in parallel with the second capacitance element and the fourth inductance element which are connected in series.
6. The apparatus for suppressing track circuit harmonics according to claim 3, wherein the matching unit comprises a transformer, a common mode inductor;
the primary side of the transformer is connected with the tuning unit in parallel, and the secondary side of the transformer is connected with the common-mode inductor.
7. The device for suppressing track circuit harmonics according to any of claims 1-6, wherein the tuning matching unit is connected to the track circuit through a copper plate terminal.
CN201711120928.3A 2017-11-14 2017-11-14 Device for suppressing track circuit harmonic wave Active CN108092487B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711120928.3A CN108092487B (en) 2017-11-14 2017-11-14 Device for suppressing track circuit harmonic wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711120928.3A CN108092487B (en) 2017-11-14 2017-11-14 Device for suppressing track circuit harmonic wave

Publications (2)

Publication Number Publication Date
CN108092487A CN108092487A (en) 2018-05-29
CN108092487B true CN108092487B (en) 2020-05-22

Family

ID=62172178

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711120928.3A Active CN108092487B (en) 2017-11-14 2017-11-14 Device for suppressing track circuit harmonic wave

Country Status (1)

Country Link
CN (1) CN108092487B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108082211A (en) * 2017-11-27 2018-05-29 北京全路通信信号研究设计院集团有限公司 A kind of track circuit interference preventer
CN109278798A (en) * 2018-09-28 2019-01-29 北京全路通信信号研究设计院集团有限公司 A kind of track circuit guard system
CN115173831B (en) * 2022-09-06 2022-12-13 北京和利时系统工程有限公司 Track circuit impedance matching device and system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2609811Y (en) * 2002-05-24 2004-04-07 北京全路通信信号研究设计院 Mechanical insulation joint track circuit device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2609811Y (en) * 2002-05-24 2004-04-07 北京全路通信信号研究设计院 Mechanical insulation joint track circuit device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
浅谈ZPW_2000A轨道电路调整存在的问题及对策;何辉;《铁道通信信号》;20120317;第48卷(第3期);第15-17页 *

Also Published As

Publication number Publication date
CN108092487A (en) 2018-05-29

Similar Documents

Publication Publication Date Title
EP1277290B1 (en) Method and device for conditioning electric installations in buildings for the rapid transmission of data
CN108092487B (en) Device for suppressing track circuit harmonic wave
US5053910A (en) Surge suppressor for coaxial transmission line
CN108075618B (en) Adapter, device for suppressing track circuit harmonic
CN101202150B (en) EMC filter inductance
JP2007527146A (en) Inductive coupling circuit and method for transmitting messages over shielded energy cables of an electrical energy distribution network
US4622522A (en) Track circuit for AC electrified railways
CN107985338B (en) Adapter, device for suppressing track circuit harmonic
WO2020063337A1 (en) Track circuit protection system
CN108092269A (en) A kind of device with harmonics restraint
WO2018082408A1 (en) Traction return current apparatus
CN210327035U (en) Track circuit higher harmonic suppression circuit
KR100595639B1 (en) Coupling apparatus for power line communication built-in impedance matching transformer
CN115173831B (en) Track circuit impedance matching device and system
RU2623030C2 (en) Traction network of ac power
CN211959204U (en) Railway locomotive induction communication carrier wave trapper
CN210724814U (en) Communication anti-interference equipment and alternating current locomotive communication line
CN212543370U (en) Suppression device for power supply cable to track circuit harmonic space induction interference
CN117657244A (en) Insulated track circuit
CN211629868U (en) Lightning protection transmission network
KR102420249B1 (en) Filter for Shielding Electro-Magnetic Wave
US1865952A (en) Line protecting and message transmitting system
CN210852478U (en) Track circuit outdoor equipment
JPS6358415B2 (en)
CN107834492B (en) Lightning protection device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant