CN107991546B - Method and device for acquiring adjacent line interference amount of track circuit - Google Patents
Method and device for acquiring adjacent line interference amount of track circuit Download PDFInfo
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Abstract
The invention relates to the technical field of track circuits, and provides a method and a device for acquiring adjacent line interference of a track circuit, wherein the method comprises the following steps: acquiring track structure information of a first section and a second section, wherein the first section and the second section are adjacent lines; constructing an adjacent line circuit simulation analysis model according to the track structure information; obtaining circuit parameter information of the first section and the second section, and assigning a value to a parameter of the adjacent line circuit simulation analysis model by using the circuit parameter information; and performing branch simulation on the track of the second section by using the adjacent line circuit simulation analysis model to obtain the adjacent line interference amount generated by the first section at different branch positions of the second section. After the adjacent line interference amount is obtained, the corresponding measures can be taken for the adjacent line interference phenomenon during the track circuit analysis to guide the engineering design, and finally the influence of the adjacent line interference is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of track circuits, in particular to a method and a device for acquiring adjacent line interference of a track circuit.
Background
The track circuit is a circuit system configured by using a steel rail as a main conductor. The circuit current can be formed by applying voltage to the two steel rails, so that the electric short circuit can occur when the train wheel pair is in contact with the steel rails to cause the change of the electric state, thereby realizing the functions of section occupation \ idle inspection and the like.
Because of the loop current between the two rails of a track, electric lines of force are generated between the rails and form magnetic lines of force around the line, and the magnetic lines of force can extend into the surrounding space to interfere with the surrounding line through capacitive coupling and inductive coupling. In reality, a locomotive is often in multi-line operation, namely at least two tracks are parallel, so that electric signals of adjacent lines invade the electric signals of the lines due to mutual inductance of steel rails and the like, the signals sensed by the receiving coils of the lines are the mixture of the signals of the adjacent lines and the signals of the lines, and the phenomenon is called adjacent line interference. When the adjacent line interference is serious, the locomotive signal can be received by mistake, and the driving safety is influenced.
The inventor finds that, in the process of implementing the present invention, if the signal interference amount can be obtained, a countermeasure can be taken for the adjacent line interference phenomenon during track circuit analysis and design to reduce the influence of the adjacent line interference, however, no solution in the prior art can solve the problem.
Disclosure of Invention
The embodiment of the invention provides a method and a device for acquiring adjacent line interference quantity of a track circuit, which are used for solving the problem that the adjacent line interference quantity of the track circuit cannot be acquired.
According to a first aspect of the embodiments of the present invention, there is provided a method for obtaining an adjacent line interference amount of a track circuit, the method including:
acquiring track structure information of a first section and a second section, wherein the first section and the second section are adjacent lines;
constructing an adjacent line circuit simulation analysis model according to the track structure information;
obtaining circuit parameter information of the first section and the second section, and assigning a value to a parameter of the adjacent line circuit simulation analysis model by using the circuit parameter information;
and performing branch simulation on the track of the second section by using the adjacent line circuit simulation analysis model to obtain the adjacent line interference amount generated by the first section at different branch positions of the second section.
Optionally, the track structure information includes one or more of the following information:
the length of the track circuit, the length of a tuning area, the number of compensation capacitors, the position relation of adjacent lines, the direction from a sending end to a receiving end in the track circuit, track circuit equipment information and transmission cable information.
Optionally, the circuit parameter information includes one or more of the following information:
mutual inductance M between adjacent lines, ballast resistance, and type of rail.
Optionally, the mutual inductance M between the adjacent lines is obtained as follows:
acquiring a carrier frequency;
acquiring the line spacing of the first section and the second section;
and acquiring mutual inductance M between the adjacent lines according to the carrier frequency, the line spacing and the relationship between the mutual inductance M between the adjacent lines, which is measured in advance, and the carrier frequency and the line spacing.
Optionally, the relationship between mutual inductance M between adjacent lines and carrier frequency and line spacing is measured in advance by the following method:
applying a plurality of carrier frequency frequencies on the first section under the condition that the line spacing is a first spacing value, measuring the disturbed voltage of the second section and the current in the first section under each carrier frequency, and acquiring the mutual inductance M between the adjacent lines under the first spacing value according to the disturbed voltage of the second section and the current in the first section;
acquiring a value of a preset coefficient in a preset formula according to the preset formula, the first interval value and mutual inductance M between adjacent lines under the first interval value, and then acquiring mutual inductance M between adjacent lines under different line intervals according to the preset formula and the value of the preset coefficient.
Optionally, performing branch simulation on the track of the second section by using the adjacent line circuit simulation analysis model to obtain the adjacent line interference amount generated by the first section at different branch positions of the second section, including:
and simulating the traveling train by using the shunt resistance moving along the track of the second section in the adjacent line circuit simulation analysis model, and taking the steel rail short-circuit current obtained when the shunt resistance moves to different shunt positions as the adjacent line interference amount at different shunt positions.
Optionally, after obtaining the adjacent line interference amount generated by the first section at the different splitting positions of the second section, the method further includes:
comparing the adjacent line interference amount at each shunt circuit position with the minimum falling value of the locomotive signal;
determining the maximum parallel length of the first section and the second section according to the comparison result.
Optionally, after obtaining the adjacent line interference amount generated by the first section at the different splitting positions of the second section, the method further includes:
and under the condition of meeting the minimum drop value of the locomotive signal, determining the level of the transmitter which enables the parallel length of the first section and the second section to be longest according to the relationship among the shunt position, the adjacent line interference amount and different levels of the transmitter.
According to a second aspect of the embodiments of the present invention, there is provided an apparatus for obtaining an adjacent line interference amount of a track circuit, the apparatus including:
the track structure information acquisition module is used for acquiring track structure information of a first section and a second section, wherein the first section and the second section are adjacent lines;
the circuit simulation analysis model building module is used for building an adjacent line circuit simulation analysis model according to the track structure information;
the circuit simulation analysis model assignment module is used for acquiring circuit parameter information of the first section and the second section and assigning parameters of the adjacent line circuit simulation analysis model by using the circuit parameter information;
and the shunt simulation module is used for performing shunt simulation on the track of the second section by using the adjacent line circuit simulation analysis model so as to obtain adjacent line interference quantities generated by the first section at different shunt positions of the second section.
Optionally, the track structure information includes one or more of the following information:
the length of the track circuit, the length of a tuning area, the number of compensation capacitors, the position relation of adjacent lines, the direction from a sending end to a receiving end in the track circuit, track circuit equipment information and transmission cable information.
Optionally, the circuit parameter information includes one or more of the following information:
mutual inductance M between adjacent lines, ballast resistance, and type of rail.
Optionally, the circuit simulation analysis model assignment module obtains mutual inductance M between the adjacent lines in the following manner:
acquiring a carrier frequency;
acquiring the line spacing of the first section and the second section;
and acquiring mutual inductance M between the adjacent lines according to the carrier frequency, the line spacing and the relationship between the mutual inductance M between the adjacent lines, which is measured in advance, and the carrier frequency and the line spacing.
Optionally, the circuit simulation analysis model assignment module measures the relationship between mutual inductance M between adjacent lines and carrier frequency and line spacing in advance in the following manner:
applying a plurality of carrier frequency frequencies on the first section under the condition that the line spacing is a first spacing value, measuring the disturbed voltage of the second section and the current in the first section under each carrier frequency, and acquiring the mutual inductance M between the adjacent lines under the first spacing value according to the disturbed voltage of the second section and the current in the first section;
acquiring a value of a preset coefficient in a preset formula according to the preset formula, the first interval value and mutual inductance M between adjacent lines under the first interval value, and then acquiring mutual inductance M between adjacent lines under different line intervals according to the preset formula and the value of the preset coefficient.
Optionally, the shunt analog module is configured to:
and simulating the traveling train by using the shunt resistance moving along the track of the second section in the adjacent line circuit simulation analysis model, and taking the steel rail short-circuit current obtained when the shunt resistance moves to different shunt positions as the adjacent line interference amount at different shunt positions.
Optionally, the apparatus further comprises:
the parallel length obtaining module is used for comparing the adjacent line interference amount at each shunting position with the minimum locomotive signal falling value after obtaining the adjacent line interference amount generated by the first section at different shunting positions of the second section; determining the maximum parallel length of the first section and the second section according to the comparison result.
Optionally, the apparatus further comprises:
and the transmitter level determining module is used for determining the transmitter level which enables the parallel length of the first section and the second section to be longest according to the relationship among the shunting position, the adjacent line interference amount and different levels of the transmitter under the condition of meeting the minimum falling value of the cab signal after obtaining the adjacent line interference amount generated by the first section at different shunting positions of the second section.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a simulation analysis scheme of track circuit adjacent line interference, which can calculate the adjacent line interference amount in a circuit simulation mode, and specifically, the track structure information of a first section and a second section which are adjacent and parallel is obtained firstly, then an adjacent line circuit simulation analysis model is constructed according to the track structure information, then the circuit parameter information of the first section and the second section is obtained, the circuit parameter information is used for assigning values to the parameters of the adjacent line circuit simulation analysis model, and finally the adjacent line circuit simulation analysis model is used for performing shunt simulation on the track of the second section to obtain the adjacent line interference amount generated by the first section at different shunt positions of the second section. After the adjacent line interference amount is obtained, a countermeasure can be taken for the adjacent line interference phenomenon during track circuit analysis to guide engineering design, and finally the influence of the adjacent line interference is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise. Furthermore, these descriptions should not be construed as limiting the embodiments, wherein elements having the same reference number designation are identified as similar elements throughout the figures, and the drawings are not to scale unless otherwise specified.
FIG. 1 is a schematic diagram of coupling interference between two loops;
fig. 2 is a flowchart illustrating a method for obtaining an adjacent line interference amount of a track circuit according to an exemplary embodiment of the present invention;
FIG. 3 is a diagram illustrating a neighbor disturbance simulation analysis model according to an exemplary embodiment of the present invention;
FIG. 4 is a schematic diagram of the interference principle of adjacent line coupling;
FIG. 5 is a schematic diagram illustrating mutual inductance in a circuit simulation analysis according to an exemplary embodiment of the present invention;
FIG. 6 illustrates a manner of measuring mutual inductance values in accordance with an exemplary embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating rail-rail spacing according to an exemplary embodiment of the present invention;
fig. 8 is a flowchart illustrating a method for obtaining an amount of track circuit adjacent line interference according to an exemplary embodiment of the present invention;
fig. 9 is a diagram illustrating a result of calculating an adjacent line interference amount at the same transmission level according to an exemplary embodiment of the present invention;
fig. 10 is a flowchart illustrating a method for obtaining an amount of track circuit adjacent line interference according to an exemplary embodiment of the present invention;
fig. 11 is a diagram illustrating a result of calculating an amount of adjacent line interference at different transmission level levels according to an exemplary embodiment of the present invention;
fig. 12 is a schematic diagram illustrating an apparatus for obtaining the track circuit adjacent line interference amount according to an exemplary embodiment of the present invention;
fig. 13 is a schematic diagram illustrating an apparatus for obtaining the track circuit adjacent line interference amount according to an exemplary embodiment of the present invention;
fig. 14 is a schematic diagram illustrating an apparatus for acquiring an adjacent line interference amount of a track circuit according to an exemplary embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In the track circuit, loop current exists between two steel rails, so that electric lines of force can be generated between the steel rails, magnetic lines of force are formed around the line, the magnetic lines of force can extend to the surrounding space, and interference is generated on the surrounding line through capacitive coupling and inductive coupling. In reality, a locomotive often runs in a compound line, namely at least two tracks are parallel, so that an electric signal of an adjacent line of one line invades into the electric signal of the line due to the mutual inductance of steel rails and other reasons, the signal sensed by a receiving coil of the line is the mixture of the adjacent line and the signal of the line, the phenomenon is called adjacent line coupling interference, which can be called adjacent line interference for short, and the interference can also be called crosstalk.
As an example, see fig. 1, in fig. 1, an upper track circuit (which may be referred to as a main string section) loop interferes with a lower track circuit (which may be referred to as a string section) loop. Likewise, the lower track circuit loop may also interfere with the upper track circuit loop (not shown in fig. 1), where the lower track circuit becomes the main string section and the upper track circuit becomes the slave string section. When the adjacent line interference is serious, the locomotive signal can be received by mistake, and the driving safety is influenced.
In order to solve the problem of adjacent line interference, the embodiment of the invention provides a simulation analysis scheme of the adjacent line interference of the track circuit, which calculates the adjacent line interference amount of the track circuit by a scientific method and realizes the analysis of the adjacent line interference problem or guides the engineering design of a field according to the simulation calculation result.
Fig. 2 is a flowchart illustrating a method for obtaining an adjacent line interference amount of a track circuit according to an exemplary embodiment of the present invention.
Referring to fig. 2, the method may include the steps of:
step S201, acquiring track structure information of a first section and a second section, wherein the first section and the second section are adjacent lines.
In the present embodiment, the first section is crosstalk to the second section, so the first section can be referred to as a main string section and the second section can be referred to as a string section. In other scenarios, the second section may also crosstalk the first section, and the identities of the first and second sections are interchanged, i.e., the second section is called the main string section and the first section is called the string section.
As an example, see fig. 1 above, in fig. 1 the upper track circuit is a simple schematic of the first section and the lower track circuit is a simple schematic of the second section.
The embodiment is not limited to the specific content of the track structure information, and those skilled in the art can select and design the track structure information according to different requirements/different scenarios, and these choices and designs can be used herein without departing from the spirit and scope of the present invention.
And S202, constructing an adjacent line circuit simulation analysis model according to the track structure information.
The embodiment of how to construct the adjacent line circuit simulation analysis model is not limited, and those skilled in the art can select and design according to different requirements/different scenarios, and these choices and designs can be used herein without departing from the spirit and scope of the present invention.
By way of example, the skilled person may construct the circuit simulation analysis model by means of some circuit simulation software (e.g. Mult is im or Simul ink, etc.).
Step S203, obtaining the circuit parameter information of the first section and the second section, and assigning a value to the parameter of the adjacent line circuit simulation analysis model by using the circuit parameter information.
The present embodiment is not limited to specific contents of the circuit parameter information, and those skilled in the art can select and design the circuit parameter information according to different requirements/different scenarios, and these choices and designs can be used herein without departing from the spirit and the scope of the present invention.
The present embodiment is not limited to how to perform parameter assignment, and a person skilled in the art may determine the parameters and the assignments specifically based on the construction of the circuit simulation analysis model in the previous step, for example, may perform operations by using some circuit simulation software (e.g., Mult is im or Simul ink).
Step S204, performing branch simulation on the track of the second section by using the adjacent line circuit simulation analysis model to obtain adjacent line interference generated by the first section at different branch positions of the second section.
For example, a traveling train may be simulated in the nearline circuit simulation analysis model using a shunt resistance moving along the track of the second section, with a rail short circuit current obtained when the shunt resistance moves to a different shunt location as an amount of nearline interference at the different shunt location.
In this or some other embodiments of the present invention, the track structure information may include one or more of the following information:
the length of the track circuit, the length of a tuning area, the number of compensation capacitors, the position relation of adjacent lines, the direction from a sending end to a receiving end in the track circuit, track circuit equipment information and transmission cable information.
For the track circuit length and the tuning area length, reference may be made to fig. 3, where fig. 3 is a schematic diagram of a simulation analysis model of adjacent line interference according to an exemplary embodiment of the present invention.
In fig. 3, C1 and C2 … Cn are compensation capacitors, and the distance between the compensation capacitors is △.
Positional relationship of adjacent lines: that is, the relative position relationship of the segments represents that the first and second segments are in a positive (i.e., no offset) relationship when the relative position relationship of the segments is 0. The relative position relation of the sections determines the position relation of the tuning areas of the main string and the driven string, and the current of the tuning areas is usually 4-6 times that of the main track circuit due to the fact that the energy of the tuning areas is large. The relative position of the tuning regions has a large effect on the amount of interference, which can be exacerbated when the main string tuning region is aligned with the string-tuned region.
Shunt resistance: when the train occupies a track circuit, a resistor formed by the wheel pair across two steel rails is called a train shunt resistor. It is composed of the resistance of wheel and axle, and the contact resistance between wheel rim and steel rail surface. The shunt resistance typically ranges from a few m Ω to 0.25 Ω.
Track circuit device information: which may also be referred to as a model of track circuit equipment, the transmitter, attenuator, tuning element, air coil, etc. of the track circuit may be considered as a two-port network, consisting of linear resistors, inductors, capacitors, etc.
Transmitting cable information: the method can also be called a parameter model of a transmission cable, the cable in the track circuit is also a uniform transmission line, and the transmission cable model can be constructed by utilizing the primary parameter resistance R, the inductance L, the capacitance C and the conductance G of the transmission cable.
In this or some other embodiments of the present invention, the circuit parameter information may include one or more of the following:
mutual inductance M between adjacent lines, ballast resistance, and type of rail.
Track bed resistance: during the transmission of electric energy in track circuit, the potential difference exists between two rails, which causes current to leak from one rail to the other rail via crossties and ballast, thus forming many parallel leakage paths between two rails, and the resistance of these paths is called track bed resistance. The reduction of the track bed resistance can increase the signal loss of the main series loop, reduce the current and have no influence on the mutual inductance M, but the voltage of the series loop is reduced, the signal loss is increased in the same ratio in the transmission process of the series loop, and therefore the interference amount is reduced under the condition of low track bed resistance.
The type of the steel rail: for example, the method can be divided into a ballast roadbed, a ballastless roadbed, a ballast concrete bridge and the like.
The signal current of the main series loop forms an interference signal in the series loop through mutual inductance between lines, and the principle is shown in fig. 4. For coupling between two signal loops, a mutual inductive flux Φ occurs when alternating current flows through coil 1 in fig. 421Induces a mutual induction voltage U in the coil 212They have the following relationship:
wherein M is12Is the mutual inductance of coil 1 to coil 2, in the same way, M21Is the mutual inductance of coil 2 to coil 1 due to M12And M21Are in fact equal, so both can be referred to as mutual inductance M. From the above equation, it can be derived that | j ω M | is a conversion factor of the main string current dI and the disturb voltage dU. For analysis and calculation, the relationship may be determined as shown in fig. 5.
In this embodiment or some other embodiments of the present invention, the mutual inductance M between the adjacent lines may be obtained as follows:
acquiring a carrier frequency;
acquiring the line spacing of the first section and the second section;
and acquiring mutual inductance M between the adjacent lines according to the carrier frequency, the line spacing and the relationship between the mutual inductance M between the adjacent lines, which is measured in advance, and the carrier frequency and the line spacing.
Specifically, the relationship between mutual inductance M between adjacent lines and carrier frequency and line spacing may be measured in advance as follows:
applying a plurality of carrier frequency frequencies on the first section under the condition that the line spacing is a first spacing value, measuring the disturbed voltage of the second section and the current in the first section under each carrier frequency, and acquiring the mutual inductance M between the adjacent lines under the first spacing value according to the disturbed voltage of the second section and the current in the first section;
acquiring a value of a preset coefficient in a preset formula according to the preset formula, the first interval value and mutual inductance M between adjacent lines under the first interval value, and then acquiring mutual inductance M between adjacent lines under different line intervals according to the preset formula and the value of the preset coefficient.
As an example, referring to fig. 6, in fig. 6, a constant current is applied to the main serial loop, a 1250-frequency response analyzer measures the voltage of the end terminal of the serial loop at a port CH2, a voltage of a sampling resistor R0 is measured at a port CH1, the voltage of the sampling resistor is the same as the current value of the main serial loop,
wherein U isBFor disturbed voltage of the series circuit, IZFor the main string current of the main string loop, the | j ω M | value is measured and calculated using a plurality of frequencies (for example, the ZPW-2000A track circuit has four carrier frequencies, including 1700Hz, 2000Hz, 2300Hz, 2600 Hz).
In analysis, the distance between lines needs to be considered according to different lengths, so that a functional relation between mutual inductance M and line distance needs to be established, and for parallel transmission lines, a preset formula, namely a theoretical formula is adopted
Henry/km (where R13-R24 are the distances between the rails of two loops, as shown in fig. 7), and the actual measured | for a specific lengthAnd the distance L between j omega M | and the line can be calculated to obtain a preset coefficient k in a preset formula, and the M values of other line distances can be obtained through the preset formula.
Technical specification (temporary) of JT-C series cab signal vehicle-mounted system equipment gives ZPW-2000 series cab signal sensitivity, which can be seen in Table 1 below. The calculated adjacent line interference amount should not exceed the minimum falling value of the locomotive signal, the maximum parallel length under the current set transmitter level condition can be obtained by comparing the adjacent line interference amount of each shunt circuit position with the minimum falling value of the locomotive signal, and the parallel length of the main string section and the chained section can be longer by adjusting the level of the transmitter.
TABLE 1
ZPW-2000 series locomotive signal sensitivity and locomotive signal reliable falling value (mA)
In this embodiment or some other embodiments of the present invention, referring to fig. 8, after obtaining the amount of adjacent line interference generated by the first section at different splitting positions of the second section, the method may further include:
step S801, comparing the adjacent line interference amount of each shunt position with the minimum falling value of the locomotive signal; determining the maximum parallel length of the first section and the second section according to the comparison result.
See fig. 9 for an example. Fig. 9 shows the maximum value of the calculation result of the interference current obtained by sequentially branching the track circuit with a section length of 1080m from the transmitting end to the receiving end of the steel rail when the main string section is branched at a certain position of the steel rail (abscissa) under the condition that the line spacing is 4.6m and the transmitting level is 1 level. Since the required disturbed current should be smaller than the reliable falling value of the cab signal, the maximum parallel length under the current conditions is 720m according to the comparison of fig. 9.
In this embodiment or some other embodiments of the present invention, referring to fig. 10, after obtaining the amount of adjacent line interference generated by the first section at different splitting positions of the second section, the method may further include:
and S1001, determining the level of the transmitter which enables the parallel length of the first section and the second section to be longest according to the relationship among the shunt position, the adjacent line interference amount and different levels of the transmitter under the condition of meeting the minimum drop value of the cab signal.
See fig. 11 for an example. Fig. 11 shows the maximum value of the calculation result of the interference current obtained by sequentially branching the main string section from the transmitting end to the receiving end of the steel rail when the main string section is branched at a certain position of the steel rail (abscissa) under the condition that the track circuit with the section length of 1080m has the line spacing of 4.6 m. The 4 curves in fig. 11 are the calculation results of the transmitter level levels of 1 level, 2 levels, 3 levels, and 4 levels (the level of 1 level is the highest level of the transmitter), respectively, and it is known that the transmitter of the track circuit should use the level of 3 levels or lower in order to achieve a parallel length of 1080 m.
The embodiment of the invention provides a simulation analysis scheme for adjacent line interference of a track circuit, which can calculate the adjacent line interference amount in a circuit simulation mode, so that a countermeasure can be taken for the adjacent line interference phenomenon during track circuit analysis to guide engineering design and finally reduce the influence of the adjacent line interference, for example, the maximum parallel length of a line can be analyzed under the condition that the distance between section lines is certain, and for example, the maximum transmitter level which can be used on the premise that the adjacent line locomotive signal is not received mistakenly can be analyzed under the condition that the parallel length is certain.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
Fig. 12 is a schematic diagram illustrating an apparatus for acquiring an adjacent line interference amount of a track circuit according to an exemplary embodiment of the present invention.
Referring to fig. 12, the apparatus may include:
a track structure information obtaining module 1201, configured to obtain track structure information of a first section and a second section, where the first section and the second section are adjacent lines;
a circuit simulation analysis model building module 1202, configured to build an adjacent line circuit simulation analysis model according to the track structure information;
a circuit simulation analysis model assignment module 1203, configured to obtain circuit parameter information of the first section and the second section, and assign a parameter of the adjacent line circuit simulation analysis model by using the circuit parameter information;
a branch simulation module 1204, configured to perform a branch simulation on the track of the second segment using the adjacent line circuit simulation analysis model to obtain adjacent line interference amounts generated by the first segment at different branch positions of the second segment.
In this or some other embodiment of the present invention, the track structure information includes one or more of the following information:
the length of the track circuit, the length of a tuning area, the number of compensation capacitors, the position relation of adjacent lines, the direction from a sending end to a receiving end in the track circuit, track circuit equipment information and transmission cable information.
In this or some other embodiment of the present invention, the circuit parameter information includes one or more of the following information:
mutual inductance M between adjacent lines, ballast resistance, and type of rail.
In this embodiment or some other embodiments of the present invention, the circuit simulation analysis model assignment module obtains the mutual inductance M between the adjacent lines by:
acquiring a carrier frequency;
acquiring the line spacing of the first section and the second section;
and acquiring mutual inductance M between the adjacent lines according to the carrier frequency, the line spacing and the relationship between the mutual inductance M between the adjacent lines, which is measured in advance, and the carrier frequency and the line spacing.
In this embodiment or some other embodiments of the present invention, the circuit simulation analysis model assignment module measures the relationship between the mutual inductance M between adjacent lines and the carrier frequency and the line spacing in advance by the following method:
applying a plurality of carrier frequency frequencies on the first section under the condition that the line spacing is a first spacing value, measuring the disturbed voltage of the second section and the current in the first section under each carrier frequency, and acquiring the mutual inductance M between the adjacent lines under the first spacing value according to the disturbed voltage of the second section and the current in the first section;
acquiring a value of a preset coefficient in a preset formula according to the preset formula, the first interval value and mutual inductance M between adjacent lines under the first interval value, and then acquiring mutual inductance M between adjacent lines under different line intervals according to the preset formula and the value of the preset coefficient.
In this embodiment or some other embodiments of the present invention, the shunt analog module is configured to:
and simulating the traveling train by using the shunt resistance moving along the track of the second section in the adjacent line circuit simulation analysis model, and taking the steel rail short-circuit current obtained when the shunt resistance moves to different shunt positions as the adjacent line interference amount at different shunt positions.
Referring to fig. 13, in this embodiment or some other embodiments of the present invention, the apparatus may further include:
a parallel length obtaining module 1301, configured to compare the adjacent line interference amount at each shunt position with a minimum locomotive signal drop value after obtaining the adjacent line interference amount generated by the first section at different shunt positions of the second section; determining the maximum parallel length of the first section and the second section according to the comparison result.
Referring to fig. 14, in this embodiment or some other embodiments of the present invention, the apparatus may further include:
a transmitter level determining module 1401, configured to determine, after obtaining the adjacent line interference amount generated by the first section at different splitting positions of the second section, a transmitter level that makes the parallel length of the first section and the second section longest according to the relationship among the splitting position, the adjacent line interference amount, and different levels of the transmitter under the condition that a minimum drop value of the cab signal is satisfied.
The embodiment of the invention provides a simulation analysis scheme for adjacent line interference of a track circuit, which can calculate the adjacent line interference amount in a circuit simulation mode, so that a countermeasure can be taken for the adjacent line interference phenomenon during track circuit analysis to guide engineering design and finally reduce the influence of the adjacent line interference, for example, the maximum parallel length of a line can be analyzed under the condition that the distance between section lines is certain, and for example, the maximum transmitter level which can be used on the premise that the adjacent line locomotive signal is not received mistakenly can be analyzed under the condition that the parallel length is certain.
The specific manner in which each unit \ module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated herein.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (12)
1. A method for acquiring adjacent line interference of a track circuit is characterized by comprising the following steps:
acquiring track structure information of a first section and a second section, wherein the first section and the second section are adjacent lines;
constructing an adjacent line circuit simulation analysis model according to the track structure information; wherein the track structure information comprises one or more of the following information:
the length of a track circuit, the length of a tuning area, the number of compensation capacitors, the position relation of adjacent lines, the direction from a sending end to a receiving end in the track circuit, track circuit equipment information and transmission cable information;
obtaining circuit parameter information of the first section and the second section, and assigning a value to a parameter of the adjacent line circuit simulation analysis model by using the circuit parameter information; the circuit parameter information comprises mutual inductance M between adjacent lines;
performing branch simulation on the track of the second section by using the adjacent line circuit simulation analysis model to obtain adjacent line interference quantities generated by the first section at different branch positions of the second section; and simulating a running train by using the shunt resistance moving along the track of the second section in the adjacent line circuit simulation analysis model, wherein the short-circuit current of the steel rail obtained when the shunt resistance moves to different shunt positions is used as the adjacent line interference amount at different shunt positions.
2. The method of claim 1, wherein the circuit parameter information further comprises one or more of the following:
track bed resistance, rail type.
3. The method of claim 2, wherein the mutual inductance M between adjacent lines is obtained by:
acquiring a carrier frequency;
acquiring the line spacing of the first section and the second section;
and acquiring mutual inductance M between the adjacent lines according to the carrier frequency, the line spacing and the relationship between the mutual inductance M between the adjacent lines, which is measured in advance, and the carrier frequency and the line spacing.
4. The method according to claim 3, wherein the relationship between mutual inductance M between adjacent lines and carrier frequency and line spacing is measured in advance by:
applying a plurality of carrier frequency frequencies on the first section under the condition that the line spacing is a first spacing value, measuring the disturbed voltage of the second section and the current in the first section under each carrier frequency, and acquiring the mutual inductance M between the adjacent lines under the first spacing value according to the disturbed voltage of the second section and the current in the first section;
acquiring a value of a preset coefficient in a preset formula according to the preset formula, the first interval value and mutual inductance M between adjacent lines under the first interval value, and then acquiring mutual inductance M between adjacent lines under different line intervals according to the preset formula and the value of the preset coefficient.
5. The method of claim 1, wherein after obtaining the amount of splatter generated by the first segment at different splitting locations of the second segment, the method further comprises:
comparing the adjacent line interference amount at each shunt circuit position with the minimum falling value of the locomotive signal;
determining the maximum parallel length of the first section and the second section according to the comparison result.
6. The method of claim 1, wherein after obtaining the amount of splatter generated by the first segment at different splitting locations of the second segment, the method further comprises:
and under the condition of meeting the minimum drop value of the locomotive signal, determining the level of the transmitter which enables the parallel length of the first section and the second section to be longest according to the relationship among the shunt position, the adjacent line interference amount and different levels of the transmitter.
7. An apparatus for obtaining the adjacent line interference of a track circuit, the apparatus comprising:
the track structure information acquisition module is used for acquiring track structure information of a first section and a second section, wherein the first section and the second section are adjacent lines;
the circuit simulation analysis model building module is used for building an adjacent line circuit simulation analysis model according to the track structure information; wherein the track structure information comprises one or more of the following information:
the length of a track circuit, the length of a tuning area, the number of compensation capacitors, the position relation of adjacent lines, the direction from a sending end to a receiving end in the track circuit, track circuit equipment information and transmission cable information;
the circuit simulation analysis model assignment module is used for acquiring circuit parameter information of the first section and the second section and assigning parameters of the adjacent line circuit simulation analysis model by using the circuit parameter information; the circuit parameter information comprises mutual inductance M between adjacent lines;
the shunt simulation module is used for performing shunt simulation on the track of the second section by using the adjacent line circuit simulation analysis model to obtain adjacent line interference quantities generated by the first section at different shunt positions of the second section; and simulating a running train by using the shunt resistance moving along the track of the second section in the adjacent line circuit simulation analysis model, wherein the short-circuit current of the steel rail obtained when the shunt resistance moves to different shunt positions is used as the adjacent line interference amount at different shunt positions.
8. The apparatus of claim 7, wherein the circuit parameter information further comprises one or more of:
track bed resistance, rail type.
9. The apparatus of claim 8, wherein the circuit simulation analysis model assignment module obtains the mutual inductance M between the adjacent lines by:
acquiring a carrier frequency;
acquiring the line spacing of the first section and the second section;
and acquiring mutual inductance M between the adjacent lines according to the carrier frequency, the line spacing and the relationship between the mutual inductance M between the adjacent lines, which is measured in advance, and the carrier frequency and the line spacing.
10. The apparatus of claim 9, wherein the circuit simulation analysis model assignment module measures the mutual inductance M between adjacent lines in advance according to the following method:
applying a plurality of carrier frequency frequencies on the first section under the condition that the line spacing is a first spacing value, measuring the disturbed voltage of the second section and the current in the first section under each carrier frequency, and acquiring the mutual inductance M between the adjacent lines under the first spacing value according to the disturbed voltage of the second section and the current in the first section;
acquiring a value of a preset coefficient in a preset formula according to the preset formula, the first interval value and mutual inductance M between adjacent lines under the first interval value, and then acquiring mutual inductance M between adjacent lines under different line intervals according to the preset formula and the value of the preset coefficient.
11. The apparatus of claim 7, further comprising:
the parallel length obtaining module is used for comparing the adjacent line interference amount at each shunting position with the minimum locomotive signal falling value after obtaining the adjacent line interference amount generated by the first section at different shunting positions of the second section; determining the maximum parallel length of the first section and the second section according to the comparison result.
12. The apparatus of claim 7, further comprising:
and the transmitter level determining module is used for determining the transmitter level which enables the parallel length of the first section and the second section to be longest according to the relationship among the shunting position, the adjacent line interference amount and different levels of the transmitter under the condition of meeting the minimum falling value of the cab signal after obtaining the adjacent line interference amount generated by the first section at different shunting positions of the second section.
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| CN108872715B (en) * | 2018-08-28 | 2020-12-11 | 北京交大思诺科技股份有限公司 | Real-time detection system for track circuit compensation capacitor |
| CN109459637B (en) * | 2018-11-14 | 2020-11-03 | 北京交大思诺科技股份有限公司 | Real-time detection system for adjacent line interference of track circuit |
| CN110618348B (en) * | 2019-07-02 | 2021-03-23 | 西南交通大学 | Parameter estimation and fault diagnosis method for detecting compensation capacitor of non-insulated track circuit |
| CN112698143A (en) * | 2021-03-25 | 2021-04-23 | 北京全路通信信号研究设计院集团有限公司 | Coupling coefficient testing method and system |
| CN116534091B (en) * | 2023-07-06 | 2023-10-27 | 北京和利时系统工程有限公司 | Method for realizing adjacent line interference analysis, computer storage medium and terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367742B1 (en) * | 2000-07-31 | 2002-04-09 | Anthony J. Ireland | Power and impedance control methods for model railroads |
| CN201413365Y (en) * | 2009-05-18 | 2010-02-24 | 河南蓝信科技有限公司 | Train rail circuit dynamic detection system for railway detection |
| CN104022835A (en) * | 2014-05-13 | 2014-09-03 | 北京交通大学 | Track circuit simulation system added with interference from neighboring line |
| CN104714127A (en) * | 2015-02-04 | 2015-06-17 | 中国铁路总公司 | Track circuit traction current interference resistance testing device based on virtual instrument |
-
2017
- 2017-10-19 CN CN201710976624.0A patent/CN107991546B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367742B1 (en) * | 2000-07-31 | 2002-04-09 | Anthony J. Ireland | Power and impedance control methods for model railroads |
| CN201413365Y (en) * | 2009-05-18 | 2010-02-24 | 河南蓝信科技有限公司 | Train rail circuit dynamic detection system for railway detection |
| CN104022835A (en) * | 2014-05-13 | 2014-09-03 | 北京交通大学 | Track circuit simulation system added with interference from neighboring line |
| CN104714127A (en) * | 2015-02-04 | 2015-06-17 | 中国铁路总公司 | Track circuit traction current interference resistance testing device based on virtual instrument |
Non-Patent Citations (1)
| Title |
|---|
| ZPW-2000A无绝缘轨道电路在并行线路间的干扰分析与研究;闫智;《中国优秀硕士学位论文全文数据库•工程科技II辑》;20140215(第2014年02期);C033-109 * |
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