Rigid contact network electric split-phase design method and system

Abstract

The invention discloses a rigid overhead line system electric split-phase design method and system, and relates to the technical field of electrified railway overhead line systems, and the method comprises the steps: building a finite element model of a rigid suspension overhead line system of a target railway line speed grade for dynamic interaction simulation of a pantograph-catenary system, and carrying out the initialization; simulating and calculating a time history curve and a statistical value of pantograph-catenary contact force of each pantograph corresponding to each group of initial system configuration schemes, determining an optimal rigid suspension catenary system configuration scheme, and determining an electric split-phase arrangement scheme and a typical installation scheme of the rigid suspension catenary of the target railway line; and based on the electric split-phase arrangement scheme and the typical installation scheme, establishing a dynamic interaction simulation model of the pantograph and the overhead line system, and finally performing dynamic performance simulation verification. The technical problem that in the prior art, a rigid suspension electric split-phase design method and an arrangement scheme suitable for the short contact network with the high speed higher than 120 km / h and the neutral section smaller than 40 m are lacked is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electrified railway contact network, in particular to a method and system for designing rigid contact network electrical phase separation. Background Art

[0002] The contact network phase separation is composed of a section of contact network with segmented insulation joints or segmented insulators at both ends to prevent the pantograph from connecting the segmented sections of the contact network with different voltages, phases or frequencies. When designing, the length of the dead zone and neutral section should be set according to the train model.

[0003] When using flexible overhead contact network, there are two forms of electrical phase separation: joint type and device type. Device type electrical phase separation is 2-3 segmented insulators connected in series to the contact network, and the no-power zone is generally about 30m long. Due to the poor dynamic performance of segmented insulators, device type electrical phase separation is not allowed for lines above 120km / h (TB 10009-2016). Joint type electrical phase separation consists of 2 insulating anchor section joints and a section of contact network in between. Since the flexible contact network needs to be equipped with an anchoring device and the span is large, the neutral section length is usually more than 380m (no-power zone length 220m), the no-power zone is long, and some sections cannot meet the requirements of vehicle inspection.

[0004] Therefore, the prior art lacks a design method and layout scheme for short (neutral section less than 40m) rigid suspension electrical phase separation of overhead contact networks applicable to high speeds (120km / h) and above. Summary of the invention

[0005] The purpose of the present invention is to provide a method and system for designing rigid contact network electrical phase separation in order to solve at least one of the above technical problems.

[0006] In a first aspect, an embodiment of the present invention provides a method for designing electrical phase separation of a rigid overhead contact network, comprising: establishing a finite element model for simulating the dynamic interaction between a pantograph and a catenary system of a rigid suspended overhead contact network of a target railway line speed grade, and initializing the parameters of the finite element model to multiple groups of initial system configuration schemes; based on target simulation conditions, simulating and calculating the dynamic simulation results of the pantograph-catenary contact force of each pantograph corresponding to each group of initial system configuration schemes; based on the dynamic simulation results of the pantograph-catenary contact force, determining an optimal rigid suspended overhead contact network system configuration scheme; based on the optimal rigid suspended overhead contact network system configuration scheme and in combination with railway vehicle information, preset standards and specifications, driving inspection results and actual conditions of the engineering line, determining at least one electrical phase separation layout scheme and a typical installation scheme of the rigid suspended overhead contact network of the target railway line; based on the at least one electrical phase separation layout scheme and the typical installation scheme, establishing a corresponding at least one pantograph-catenary system dynamic interaction simulation model; based on the target simulation conditions, simulating and verifying the dynamic performance of the at least one pantograph-catenary system dynamic interaction simulation model, and determining a target electrical phase separation layout scheme and a typical installation scheme based on the verification results.

[0007] Furthermore, after determining the target electrical phase-division layout scheme and the typical installation scheme based on the verification results, the method further includes: performing in-depth design based on the target electrical phase-division layout scheme and the typical installation scheme verified by simulation.

[0008] Furthermore, the finite element model includes: the pantograph model adopts a three-mass block model, the rigid contact network model bus is equivalent to a spatial beam unit, the contact line adopts a reduced mass point, the positioning wire clamp is simplified to a spring unit, the suspension structure adopts a spatial beam unit, and the pantograph-network coupling point is processed using a penalty function.

[0009] Furthermore, the parameters of the finite element model include: pantograph mass block model parameters, maximum number of pantographs, contact line model, nominal span, anchor segment joint form, busbar model, arm form, material and size, locator stiffness and mass; the dynamic simulation results of the pantograph-catenary contact force include:

[0010] The bow-net contact force time history curve, the positioning point lift and the bow-net contact force statistics; the bow-net contact force statistics include: average contact force, maximum contact force, minimum contact force, maximum statistical contact force, minimum statistical contact force and standard deviation.

[0011] Furthermore, the electrical phase separation layout plan includes: electrical phase separation form, electrical phase separation category, non-electric zone length, neutral zone length, pantograph correction spacing, rigid contact network spacing of different phases and plane layout plan; wherein, the electrical phase separation form includes long phase separation form and short phase separation form; the electrical phase separation category includes double break and triple break; the plane layout plan includes: plane layout of span and slope of electrical phase separation and its connected or adjacent anchor sections.

[0012] Furthermore, the pantograph correction spacing includes:

[0013] L'=L+d+w

[0014] Wherein, L' is the pantograph correction spacing, L is the pantograph standard spacing, d is the slide spacing, and w is the slide width; the different rigid contact network spacings include:

[0015] D'=Da*1.4*l

[0016] Wherein, D' is the distance between rigid contact wires of different phases, D is the distance between contact wires of different phases, a is the safety factor, and l is the length of the contact wire tap.

[0017] Furthermore, the target electrical phase-separation layout scheme and typical installation scheme include: a first rigid-flexible transition section connected to the flexible contact network of phase 1, a first rigid contact network section arranged according to the optimal rigid suspension contact network system configuration scheme, an electrical phase-separation section determined based on at least one electrical phase-separation layout scheme and a typical installation scheme, a second rigid contact network section arranged according to the optimal rigid suspension contact network system configuration scheme, and a second rigid-flexible transition section connected to the flexible contact network of phase 2; wherein, the length of the first rigid-flexible transition section is 12m-25m, the length of the first rigid contact network section is not less than 40m, the length of the electrical phase-separation section is not more than 40m, the length of the second rigid contact network section is not less than 40m, and the length of the second rigid-flexible transition section is 12m-25m.

[0018] In the second aspect, an embodiment of the present invention further provides a rigid contact network electrical phase design system, comprising: a first establishment module, a first simulation module, a first determination module, a second determination module, a second establishment module, a second simulation module and a third determination module; wherein the first establishment module is used to establish a finite element model of a rigid suspension contact network of a target railway line speed grade for simulating the dynamic interaction between the pantograph and the catenary system, and initialize the parameters of the finite element model to multiple groups of initial system configuration schemes; the first simulation module is used to simulate and calculate the dynamic simulation results of the pantograph-catenary contact force of each pantograph corresponding to each group of initial system configuration schemes based on the target simulation conditions; the first determination module is used to determine the optimal rigid suspension contact network system configuration scheme based on the dynamic simulation results of the pantograph-catenary contact force; The second determination module is used to determine at least one electrical phase-separation layout scheme and a typical installation scheme of the rigid suspension contact network of the target railway line based on the optimal rigid suspension contact network system configuration scheme and in combination with railway vehicle information, preset standard specifications, driving inspection results and actual conditions of the engineering line; the second establishment module is used to establish at least one corresponding pantograph and contact network system dynamic interaction simulation model based on the at least one electrical phase-separation layout scheme and the typical installation scheme; the second simulation module is used to simulate and verify the dynamic performance of the at least one pantograph and contact network system dynamic interaction simulation model based on the target simulation conditions to obtain verification results; the third determination module is used to determine the target electrical phase-separation layout scheme and the typical installation scheme based on the verification results.

[0019] In a third aspect, an embodiment of the present invention further provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method provided in the embodiment of the present invention when executing the computer program.

[0020] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the computer instructions are executed by a processor, the method provided in the embodiment of the present invention is implemented.

[0021] The present invention provides a method and system for designing electrical phase separation of a rigid overhead contact network. Through two simulations of dynamic interaction between a bow and a catenary, the plan layout design scheme of a rigid suspended overhead contact network can be confirmed in the design stage. The influence of two adjacent insulating anchor section joints on the dynamic performance of the bow-catenary system at high speed can be evaluated according to the actual plan layout of the overhead contact network, thereby realizing the design of short electrical phase separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A flow chart of a method for designing rigid contact network electrical phase separation provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of an electrical phase separation arrangement provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of an electrical phase separation scheme in which a non-electric zone is greater than a maximum double-bow spacing provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of an electrical phase separation scheme in which the neutral section is smaller than the minimum double-bow spacing provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a three-break electrical phase separation scheme provided in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of signal arrangement according to a standard provided in an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of a detailed electrical phase segment arrangement scheme provided in an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of a target electrical phase separation arrangement scheme and a typical installation scheme provided in an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of a rigid contact network electrical phase separation design system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] Figure 11 is a flow chart of a method for designing a rigid contact network electrical phase separation according to an embodiment of the present invention. Figure 1 As shown, the method specifically comprises the following steps:

[0035] Step S102, establishing a finite element model of a rigid suspended overhead contact network of a target railway line speed grade for simulating dynamic interaction between a pantograph and a catenary system, and initializing parameters of the finite element model to multiple groups of initial system configuration schemes.

[0036] Specifically, first collect the engineering data of the target railway line. The engineering data include: line environmental conditions, vehicle type, vehicle operation organization mode, pantograph model, running vehicle double pantograph spacing L, pantograph slide spacing d, pantograph slide width w, etc. Then, according to the pantograph model to be adopted (applicable to trunk railway and subway pantographs of design speed, selected according to the project type), a finite element model of the rigid suspension contact network is established to perform dynamic simulation calculation of the pantograph network, and determine the nominal span, maximum allowable span, anchor joint length, and other system parameters of the rigid suspension contact network as the design basis of the scheme.

[0037] In an optional implementation provided by an embodiment of the present invention, the finite element model of the rigid suspended contact network adopts a rigid contact network model with at least two anchor segments and a length of not less than 200 m.

[0038] Specifically, the finite element model includes: the pantograph model adopts a three-mass block model, the rigid contact network model bus is equivalent to a space beam unit, the contact line adopts a reduced mass point, the positioning wire clamp is simplified to a spring unit, the suspension structure adopts a space beam unit, and the pantograph-network coupling point is processed using a penalty function.

[0039] In the embodiment of the present invention, the contact stiffness of the pantograph-catenary coupling point is set with reference to EN50318. The accuracy verification of the simulation software is verified with reference to EN50318.

[0040] Specifically, the parameters of the finite element model include: pantograph mass block model parameters, maximum number of pantographs, contact line model, nominal span, anchor section joint form, busbar model, arm form, material and size, positioner stiffness and mass, etc. Among them, the pantograph mass block model parameters include: mass block mass, stiffness and damping between mass blocks; anchor section joint forms include: expansion joint or anchor section joint.

[0041] Specifically, the initial configuration scheme formed according to the parameters of the finite element model includes: typical arrangements of anchor segment joints, expansion joints, rigid-flexible transitions, and the like.

[0042] Step S104, based on the target simulation conditions, simulate and calculate the dynamic simulation results of the pantograph-net contact force of each pantograph corresponding to each group of initial system configuration schemes.

[0043] In an optional implementation provided by an embodiment of the present invention, the target simulation conditions include: 1. Span range 6-10m; 2. Speed ​​range: 0-maximum design speed*1.2; 3. Support form, support stiffness; 4. Span changes, joints, etc.

[0044] In an optional implementation manner provided by an embodiment of the present invention, the simulation software used in the simulation process includes a bow-net simulation software.

[0045] Specifically, the embodiments of the present invention use the filtered statistical values ​​of the pantograph-catenary contact force as evaluation according to relevant standards, such as TB / T 3271 "Criteria for interaction between pantograph and contact network of rail transit current collecting system". Specifically, the dynamic simulation results of the pantograph-catenary contact force include: the time history curve of the pantograph-catenary contact force, the lifting of the positioning point and the statistical values ​​of the pantograph-catenary contact force; wherein the statistical values ​​of the pantograph-catenary contact force include: the average contact force, the maximum contact force, the minimum contact force, the maximum statistical contact force, the minimum statistical contact force and the standard deviation, to determine whether the rigid suspension contact network solution can meet the dynamic performance requirements of the pantograph-catenary system.

[0046] Step S106, determining the optimal rigid suspension contact network system configuration scheme based on the dynamic simulation results of the pantograph-catenary contact force.

[0047] In an optional implementation manner provided by an embodiment of the present invention, the optimal rigid suspended contact network system configuration scheme includes: contact wire model, busbar model, typical installation (arm or portal frame length, material, locator stiffness, mass), nominal span, maximum allowable span, maximum allowable slope and its variation, allowable adjacent span ratio, anchor section joint layout scheme (span of each span, elevation of the first positioning point, elevation of the second positioning point, length of the overlapping area, etc.), allowable deviation of the conductor height, etc.

[0048] Step S108, based on the optimal rigid suspension overhead contact network system configuration plan and combined with railway vehicle information, preset standard specifications, driving inspection results and actual conditions of the engineering line, determine at least one electrical phase layout plan and a typical installation plan for the rigid suspension overhead contact network of the target railway line.

[0049] Optionally, the preset standard specification includes the EN50367-2020 standard.

[0050] Specifically, the phase separation layout plan includes: phase separation form, phase separation type, dead zone length, neutral zone length, pantograph correction spacing, spacing between rigid contact networks of different phases and plane layout plan; among them,

[0051] The electrical phase separation forms include long phase separation form and short phase separation form;

[0052] Electrical phase separation categories include double-break and triple-break.

[0053] The plan layout includes: the plan layout of the span and slope of the electrical phase separation and its connected or adjacent anchor sections. The scope may include part of the flexible contact network, rigid-flexible transition section, rigid contact network, and electrical phase separation; information includes: span, positioning point height, installation drawing number, etc.

[0054] It should be noted that the rigid contact network and the flexible contact network have different structures. When determining the length of the central section, it is necessary to consider the width and spacing of the pantograph slides, the insulation distance, etc.

[0055] Specifically, the pantograph correction spacing includes:

[0056] L'=L+d+w

[0057] Wherein, L' is the corrected pantograph spacing, L is the standard pantograph spacing, d is the slide spacing, and w is the slide width;

[0058] Different rigid contact network spacings include:

[0059] D'=Da*1.4*l

[0060] Wherein, D' is the distance between rigid contact wires of different phases, D is the distance between contact wires of different phases, a is the safety factor, and l is the length of the contact wire tap. In the embodiment of the present invention, the length of the contact wire tap is calculated as 0.2 m.

[0061] Specifically, the driving inspection result includes the result of the driving inspection based on the conditions of the target railway line, the vehicle type, the vehicle operation organization mode, etc.

[0062] Verify the neutral section and the dead zone length settings. Specifically, the steps include:

[0063] (1) Based on all vehicle types, pantograph combinations of all vehicles, and whether or not the pantographs of different vehicles are connected to the busbar, check whether the optimal configuration solution will cause a short circuit. If not, proceed to the next step.

[0064] (2) Determine the location of contact network phase separation signs and magnetic sleepers in accordance with relevant documents and methods;

[0065] (3) Use professional software (driving software) to simulate and calculate the vehicle phase speed; for example, Southwest Jiaotong University's "Train Traction Calculation and Block Partition Design System V1.1";

[0066] (4) According to the requirements of relevant documents, determine whether the optimal configuration solution meets the driving requirements.

[0067] Step S110: establishing at least one corresponding pantograph-catenary system dynamic interaction simulation model based on at least one electrical phase separation arrangement scheme and a typical installation scheme.

[0068] Specifically, according to the target electrical phase separation scheme, complete the selection of key equipment and determine the models of busbars, rotating arms, wire clamps, etc.; according to line conditions, construction joint locations and other information, complete the plane layout of the electrical phase separation section; complete the preliminary installation drawings of positioning points, anchor section terminals, anchor section joints, contact network switches, etc.; prepare relevant technical documents and finally establish a contact network scheme simulation model.

[0069] Step S112, based on the target simulation conditions, the dynamic performance of at least one pantograph and overhead line system dynamic interaction simulation model is simulated and verified, and the target electrical phase layout scheme and the typical installation scheme are determined based on the verification results.

[0070] In the embodiment of the present invention, based on the electric phase layout scheme and the typical installation scheme determined by the optimal rigid suspension overhead contact network system configuration scheme, two or more schemes may be obtained, so a second simulation verification is required for these schemes. Specifically, by establishing a corresponding simulation model, and then simulating and verifying the dynamic performance of the simulation model, an optimal target electric phase layout scheme and a typical installation scheme can be determined based on the simulation results.

[0071] Figure 2 Schematic diagram of an electrical phase separation arrangement provided according to an embodiment of the present invention. Figure 2 As shown, the target electrical phase-separation arrangement scheme and the typical installation scheme include: the first rigid-flexible transition section L1 connected to the flexible contact network of phase 1, the first rigid contact network section L2 arranged according to the optimal rigid suspension contact network system configuration scheme, the electrical phase-separation section L3 determined based on at least one electrical phase-separation arrangement scheme and the typical installation scheme, the second rigid contact network section L4 arranged according to the optimal rigid suspension contact network system configuration scheme, and the second rigid-flexible transition section L5 connected to the flexible contact network of phase 2; wherein,

[0072] The length of the first rigid-flexible transition section L1 is 12m-25m;

[0073] The length of the first rigid contact network segment L2 is not less than 40m;

[0074] The length of the electrical phase segment L3 is no more than 40m;

[0075] The length of the second rigid contact network segment L4 is not less than 40m;

[0076] The length of the second rigid-flexible transition section L5 is 12m-25m.

[0077] A method for designing rigid contact network phase separation is provided in an embodiment of the present invention. The rigid contact network is used to replace a section of flexible contact network near the phase separation phase. The characteristics of the rigid contact network, such as no tension, short span, and short anchor section (the shortest span of the flexible contact network is more than 20m, the shortest anchor section joint is three spans, and the shortest anchor section length is more than 100m), are fully utilized to realize short phase separation design, and the contact network phase separation can be shortened from nearly 200m to about 20m. A variety of vehicle types (such as passenger car sets, centralized power types, etc.) can be used, which solves the problem of setting phase separation on long slopes. The method is suitable for trunk railways and urban rail lines with a speed of more than 120km / h.

[0078] A method for designing electrical phase separation of a rigid contact network provided by an embodiment of the present invention can fully consider the dynamic interaction between the pantograph and the rigid contact network under high-speed conditions, and use the pantograph-network simulation to ensure that the solution can meet the high-speed requirements. The present invention uses two pantograph-network simulations to confirm the dynamic performance of the design solution, and ensures that the designed rigid contact network electrical phase separation solution can meet the requirements of speeds above 120km / h. Specifically, the first pantograph-network simulation is used to determine the system key parameters of the rigid contact network at the applicable speed, and then, combined with the actual project conditions, professional contact network work such as plane layout and installation design is completed; then, according to the actual plane layout and installation method adopted, vehicle inspection calculations and a second pantograph-network simulation are performed to determine whether the design solution is suitable for the target project.

[0079] Embodiment 2

[0080] The present invention takes a rigid contact network electrical phase separation design method applicable to a speed of 140 km / h as an example to illustrate the method flow provided by the present invention. Specifically, the method comprises the following steps:

[0081] Step 1: Collect engineering data.

[0082] The meteorological conditions of a certain power phase are as follows:

[0083] Table 1

[0084]

[0085] According to the pollution area and altitude, the creepage distance of the insulator is determined to be 1600mm, and the air insulation gap is as shown in Table 2:

[0086] Table 2

[0087]

[0088] Vehicle type: passenger multiple unit train, EMU truck.

[0089] Pantograph operation mode and spacing: double pantograph, maximum 44m, minimum 19.5m;

[0090] Pantograph type: DSA200, DSA250.

[0091] Step 2: According to the pantograph model to be adopted (applicable to trunk railway and subway pantographs of design speed, selected according to the project type), a rigid contact network model is established, and the pantograph network simulation calculation is performed to determine the rigid contact network nominal span, maximum allowable span, anchor section joint length and layout plan, etc., as the design basis of the plan. The determined system plan is shown in Table 3 below:

[0092] Table 3

[0093]

[0094] Step 3: Electrical phase layout and typical installation plan Figure 3 , Figure 4 and Figure 5 As shown, Figure 3 is a schematic diagram of an electrical phase separation scheme in which a non-electrical zone is greater than a maximum double-bow spacing, provided according to an embodiment of the present invention. Figure 4 is a schematic diagram of an electrical phase separation scheme in which the neutral section is smaller than the minimum double-bow spacing provided in an embodiment of the present invention, Figure 5 It is a schematic diagram of a three-break electrical phase separation scheme provided according to an embodiment of the present invention.

[0095] Figure 6 1 is a schematic diagram of a signal arrangement according to a standard provided in accordance with an embodiment of the present invention. Specifically, the signal arrangements of the above three electrical phase separation arrangements provided in the embodiment of the present invention are as follows: Figure 6 shown.

[0096] Step 4: Verification. The three electrical phase separation arrangements mentioned above are verified for outlet speed. The verification results are shown in Table 4:

[0097] Table 4

[0098]

[0099] Among them, the sequence number 1 in Table 4 is Figure 3 The electric phase separation scheme shown in the figure is when the no-electric zone is larger than the double-bow spacing. No. 2 is Figure 4 The neutral section shown is smaller than the minimum double-bow spacing electrical phase separation scheme, No. 3 is Figure 5 The three-break electrical phase separation scheme shown.

[0100] Step 5: According to the line conditions, refine the layout plan of the electrical phase segment, such as Figure 7 shown.

[0101] Step 6: Second simulation. Figure 8It is a schematic diagram of a target electrical phase separation arrangement scheme and a typical installation scheme provided according to an embodiment of the present invention. Table 5 is the secondary simulation result:

[0102] Table 5

[0103]

[0104] As shown in Table 5, after simulation verification, the target electrical phase layout scheme and typical installation scheme meet the design requirements.

[0105] Step 7: Complete construction design, operation plan, etc.

[0106] Embodiment 3

[0107] Fig. 9 Schematic diagram of a rigid contact network electrical phase separation design system provided according to an embodiment of the present invention. Fig. 9 As shown, the system includes: a first establishing module 10 , a first simulation module 20 , a first determining module 30 , a second determining module 40 , a second establishing module 50 , a second simulation module 60 and a third determining module 70 .

[0108] Specifically, the first establishment module 10 is used to establish a finite element model of a rigid suspension contact network of a target railway line speed grade for simulating the dynamic interaction between a pantograph and a catenary system, and initialize the parameters of the finite element model to multiple groups of initial system configuration schemes;

[0109] The first simulation module 20 is used to simulate and calculate the dynamic simulation results of the pantograph-net contact force of each pantograph corresponding to each group of initial system configuration schemes based on the target simulation conditions;

[0110] A first determination module 30 is used to determine an optimal rigid suspension contact network system configuration scheme based on the pantograph-catenary contact force dynamic simulation result;

[0111] The second determination module 40 is used to determine at least one electrical phase arrangement scheme and a typical installation scheme of the rigid suspension overhead contact network of the target railway line based on the optimal rigid suspension overhead contact network system configuration scheme and in combination with railway vehicle information, preset standard specifications, driving inspection results and actual conditions of the engineering line;

[0112] The second establishing module 50 is used to, based on at least one electrical phase separation arrangement scheme and a typical installation scheme,

[0113] Establishing at least one corresponding simulation model of dynamic interaction between the pantograph and the overhead contact system;

[0114] The second simulation module 60 is used to simulate and verify the dynamic performance of at least one pantograph and overhead line system dynamic interaction simulation model based on the target simulation conditions to obtain a verification result;

[0115] The third determination module 70 is used to determine a target electrical phase layout scheme and a typical installation scheme based on the verification result.

[0116] An embodiment of the present invention further provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method provided in the embodiment of the present invention when executing the computer program.

[0117] An embodiment of the present invention further provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed by a processor, the method provided by the embodiment of the present invention is implemented.

[0118] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0119] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for designing rigid contact network electrical phase separation, characterized in that: include: Establishing a finite element model of a rigid suspended overhead contact network of a target railway line speed grade for simulating dynamic interaction between a pantograph and a catenary system, and initializing parameters of the finite element model to a plurality of groups of initial system configuration schemes; Based on the target simulation conditions, the dynamic simulation results of the pantograph-net contact force of each pantograph corresponding to each initial system configuration scheme are simulated and calculated; Based on the dynamic simulation results of the pantograph-catenary contact force, determining the optimal rigid suspension catenary system configuration scheme; Based on the optimal rigid suspension overhead contact network system configuration scheme and in combination with railway vehicle information, preset standard specifications, driving inspection results and actual conditions of the engineering line, at least one electrical phase layout scheme and a typical installation scheme of the rigid suspension overhead contact network of the target railway line are determined; Based on the at least one electrical phase separation arrangement scheme and the typical installation scheme, establishing at least one corresponding pantograph and overhead line system dynamic interaction simulation model; Based on the target simulation conditions, the dynamic performance of the at least one pantograph and overhead line system dynamic interaction simulation model is simulated and verified, and the target electrical phase layout scheme and typical installation scheme are determined based on the verification results.

2. The method according to claim 1, characterized in that: After determining the target electrical phase-separation layout scheme and the typical installation scheme based on the verification results, the method further includes: performing in-depth design based on the target electrical phase-separation layout scheme and the typical installation scheme verified by simulation.

3. The method according to claim 1, characterized in that: The finite element model includes: the pantograph model adopts a three-mass block model, the rigid contact network model bus is equivalent to a space beam unit, the contact line adopts a reduced mass point, the positioning wire clamp is simplified to a spring unit, the suspension structure adopts a space beam unit, and the pantograph-network coupling point is processed using a penalty function.

4. The method according to claim 1, characterized in that: The parameters of the finite element model include: pantograph mass block model parameters, maximum number of pantographs, contact wire model, nominal span, anchor section joint form, busbar model, arm form, material and size, positioner stiffness and mass; The dynamic simulation results of the pantograph-catenary contact force include: a time history curve of the pantograph-catenary contact force, a positioning point elevation, and a statistical value of the pantograph-catenary contact force; The statistical values ​​of the bow-catenary contact force include: average contact force, maximum contact force, minimum contact force, maximum statistical contact force, minimum statistical contact force and standard deviation.

5. The method according to claim 1, characterized in that: The electric phase separation layout plan includes: electric phase separation form, electric phase separation type, non-electric zone length, neutral zone length, pantograph correction spacing, different phase rigid contact network spacing and plane layout plan; wherein, The electrical phase separation forms include long phase separation forms and short phase separation forms; The electrical phase separation categories include double-break and triple-break; The plan layout scheme includes: the plan layout of the span and slope of the electrical phase separation and its connected or adjacent anchor sections.

6. The method according to claim 5, characterized in that: The pantograph correction spacing includes: L'=L+d+w Wherein, L' is the pantograph correction spacing, L is the pantograph standard spacing, d is the slide spacing, and w is the slide width; The different rigid contact network spacings include: D'=Da*1.4*l Wherein, D' is the distance between rigid contact wires of different phases, D is the distance between contact wires of different phases, a is the safety factor, and l is the length of the contact wire tap.

7. The method according to claim 1, characterized in that The target electrical phase-separation arrangement scheme and typical installation scheme include: a first rigid-flexible transition section connected to the flexible contact network of phase 1, a first rigid contact network section arranged according to the optimal rigid suspension contact network system configuration scheme, an electrical phase-separation section determined based on at least one electrical phase-separation arrangement scheme and a typical installation scheme, a second rigid contact network section arranged according to the optimal rigid suspension contact network system configuration scheme, and a second rigid-flexible transition section connected to the flexible contact network of phase 2, which are connected in sequence; wherein, The length of the first rigid-flexible transition section is 12m-25m, the length of the first rigid contact network section is not less than 40m, the length of the electrical phase separation section is not more than 40m, the length of the second rigid contact network section is not less than 40m, and the length of the second rigid-flexible transition section is 12m-25m.

8. A rigid contact network electrical phase separation design system, characterized in that: include: a first establishing module, a first simulating module, a first determining module, a second determining module, a second establishing module, a second simulating module and a third determining module; wherein, The first establishment module is used to establish a finite element model of a rigid suspended overhead contact network of a target railway line speed grade for simulating dynamic interaction between a pantograph and a catenary system, and initialize the parameters of the finite element model to multiple groups of initial system configuration schemes; The first simulation module is used to simulate and calculate the dynamic simulation results of the pantograph-net contact force of each pantograph corresponding to each group of initial system configuration schemes based on the target simulation conditions; The first determination module is used to determine the optimal rigid suspension contact network system configuration scheme based on the pantograph-catenary contact force dynamic simulation result; The second determination module is used to determine at least one electrical phase layout scheme and a typical installation scheme of the rigid suspension contact network of the target railway line based on the optimal rigid suspension contact network system configuration scheme and in combination with railway vehicle information, preset standard specifications, driving inspection results and actual conditions of the engineering line; The second establishing module is used to establish at least one corresponding pantograph and overhead line system dynamic interaction simulation model based on the at least one electrical phase separation arrangement scheme and the typical installation scheme; The second simulation module is used to simulate and verify the dynamic performance of the at least one pantograph and overhead line system dynamic interaction simulation model based on the target simulation condition to obtain a verification result; The third determination module is used to determine a target electrical phase layout scheme and a typical installation scheme based on the verification result.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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