A method and device for determining sheath circulation current of a multi-circuit cross-connected cable

Abstract

The embodiment of the present invention discloses a method and device for determining the sheath circulation of a multi-circuit cross-connected cable, wherein the method includes: determining electrical data used in the current data processing stage; determining new electrical data according to the sheath circulation values ​​of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage; and performing convergence condition judgment on the new electrical data to determine the sheath circulation of each sheath sub-circuit of the target circuit that meets the convergence condition. By executing the technical solution provided by the embodiment of the present invention, the determination of sheath circulation applicable to any multi-circuit can be realized, which is easy to realize and can make up for the shortcomings of the high time complexity and space complexity of the existing multi-circuit circulation calculation.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-circuit cross-connection cables, and in particular to a method and a device for determining sheath circulation current of a multi-circuit cross-connection cable. Background Art

[0002] With the development of power grids, it is becoming more and more common to lay multiple cable lines in the same trench. Compared with single-circuit cable lines, there are more complex electromagnetic coupling relationships between multi-circuit cable lines. Under different arrangement methods, the sheath circulating current will be significantly different. When the arrangement method is not appropriate, the metal sheath of some cables in the multi-circuit cable line is prone to excessive circulating current.

[0003] The multi-circuit sheath circulating current determination method in the related art is mainly aimed at double-circuit cable lines, and rarely involves cable lines with more than two circuits. In addition, when calculating the double-circuit cable sheath circulating current, the impedance matrix method is used. When the number of cable loops increases, the dimension of the impedance matrix will increase significantly. At the same time, the calculation program needs to be significantly modified and cannot be applied to the circulation calculation of any number of loops. Summary of the invention

[0004] The embodiment of the present invention provides a method and device for determining the sheath circulation of a multi-loop cross-connected cable, which can realize the determination of any multi-loop sheath circulation, is convenient and flexible to implement, and can make up for the shortcomings of the existing multi-loop circulation calculation with high time complexity and space complexity.

[0005] In a first aspect, an embodiment of the present invention provides a method for determining sheath backflow of a multi-circuit cross-connect cable, the method comprising:

[0006] Determine the electrical data used in the current data processing stage; wherein the electrical data includes the total induced voltage of each sheath sub-loop of the target loop and the sheath circulating current value of each sheath sub-loop of each loop, and the target loop is one of the loops in the multi-loop cross-connect cable;

[0007] Determine new electrical data according to the sheath circulation current value of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage;

[0008] A convergence condition judgment is performed on the new electrical data to determine the sheath circulation current of each sheath sub-loop of the target loop that meets the convergence condition.

[0009] In a second aspect, an embodiment of the present invention further provides a sheath backflow determination device for a multi-circuit cross-connect cable, the device comprising:

[0010] An electrical data determination module, used to determine electrical data used in the current data processing stage; wherein the electrical data includes the total induced voltage of each sheath sub-loop of the target loop and the sheath circulating current value of each sheath sub-loop of each loop, wherein the target loop is one of the loops in the multi-loop cross-connect cable;

[0011] An electrical data updating module, for determining new electrical data according to the sheath circulation current value of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage;

[0012] The sheath circulation determination module is used to determine the convergence condition of the new electrical data and determine the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition.

[0013] In a third aspect, an embodiment of the present invention further provides an electronic device, the electronic device comprising:

[0014] at least one processor; and

[0015] a memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the sheath return flow determination method for a multi-circuit cross-connect cable according to any embodiment of the present invention.

[0017] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a processor to implement the method for determining sheath return flow of a multi-circuit cross-connect cable as described in any embodiment of the present invention when executed.

[0018] The technical solution provided by the embodiment of the present invention determines the electrical data used in the current data processing stage; wherein the electrical data includes the total induced voltage of each sheath sub-circuit of the target circuit and the sheath circulating current value of each sheath sub-circuit of each circuit, and the target circuit is one of the circuits in the multi-circuit cross-connected cable; according to the sheath circulating current value of each sheath sub-circuit of each circuit in the current data processing stage, new electrical data is determined for loading and using the new electrical data when entering the next data processing stage; the convergence condition of the new electrical data is judged to determine the sheath circulating current of each sheath sub-circuit of the target circuit that meets the convergence condition. By executing the technical solution provided by the embodiment of the present invention, the determination of sheath circulating current applicable to any multi-circuit can be realized, which is easy to realize and can make up for the shortcomings of the high time complexity and space complexity of the existing multi-circuit circulation calculation.

[0019] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a flow chart of a method for determining sheath backflow of a multi-circuit cross-connect cable provided by an embodiment of the present invention;

[0022] Figure 2 is an equivalent circuit diagram of multi-loop sheath circulating current calculation provided by an embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of the structure of a target loop of a multi-loop cross-connect cable provided by an embodiment of the present invention;

[0024] Figure 4 is a flow chart of another method for determining sheath return flow of a multi-circuit cross-connect cable provided by an embodiment of the present invention;

[0025] Figure 5 It is a schematic structural diagram of a sheath return flow determination device for a multi-circuit cross-connected cable provided by an embodiment of the present invention;

[0026] Figure 6 The invention is a schematic structural diagram of an electronic device for implementing the method for determining the sheath return flow of a multi-circuit cross-connect cable according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0028] It should be noted that the term "target" and the like in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] Figure 1 The present invention provides a flowchart of a method for determining the sheath return of a multi-circuit cross-connect cable provided by an embodiment of the present invention. The method can be executed by a sheath return determining device for a multi-circuit cross-connect cable. The device can be implemented by software and / or hardware. The device can be configured in an electronic device for determining the sheath return of a multi-circuit cross-connect cable. The method is applied to a scenario in which the sheath return of a multi-circuit cross-connect cable is determined. Figure 1 As shown, the technical solution provided by the embodiment of the present invention specifically includes:

[0030] S110: Determine the electrical data used in the current data processing stage.

[0031] The electrical data includes the total induced voltage of each sheath sub-loop of the target loop and the sheath circulating current value of each sheath sub-loop of each loop, and the target loop is one of the loops in a multi-loop cross-connected cable.

[0032] For example, Figure 2 As shown in FIG. 1 , a multi-circuit cross-connect cable may include at least two circuits. R1 and R2 represent grounding resistances. Figure 3As shown, A1, A2, A3, B1, B2, B3, C1, C2, C3 are three cross-connected small sections, and each circuit has three sheath sub-circuits. The current data processing stage may be a stage for determining electrical data for the first time, and the current data processing stage may also be a stage for determining electrical data for the non-first time. The electrical data may include the total induced voltage of each sheath sub-circuit of the target circuit. The electrical data may also include the sheath circulating current value of each sheath sub-circuit of the target circuit. The electrical data may be set according to actual needs. Among them, the total induced voltage of each sheath sub-circuit of the target circuit may be the total induced voltage generated by the core current of each circuit on each sheath sub-circuit of the target circuit. The total induced voltage of each sheath sub-circuit of the target circuit may also be the sum of the total induced voltage generated by the sheath circulating current of each circuit on each sheath sub-circuit of the target circuit and the total induced voltage generated by the core current of each circuit on each sheath sub-circuit of the target circuit. The total induced voltage of each sheath sub-circuit of the target circuit may change according to the advancement of the calculation process.

[0033] If the current data processing stage is the stage of determining electrical data for the first time, this scheme can use the total induced voltage generated by the core current of each circuit on each sheath sub-circuit of the target circuit in the current data processing stage as the total induced voltage of each sheath sub-circuit of the target circuit in the current data processing stage, and determine the sheath self-impedance parameter Z and the earth equivalent resistance R of the multi-circuit cross-connected cable. e And the grounding resistance R1, R2 of the target loop, and then according to the total induced voltage generated by the core current of each loop on each sheath sub-loop of the target loop, the sheath self-impedance parameter Z of the multi-loop cross-connected cable, the earth equivalent resistance R e And the grounding resistances R1 and R2 of the target loop determine the sheath circulating current values ​​of each sheath sub-loop of the target loop in the current data processing stage.

[0034] Among them, Figure 2 As shown, the sheath self-impedance parameter Z of the multi-circuit cross-connect cable is determined based on the following formula: Z = R + jX,

[0035] in,

[0036] Where R represents resistance, X represents reactance, j represents imaginary unit, ρ represents sheath resistivity; α represents sheath resistance temperature coefficient; T represents sheath operating temperature; r1 and r2 represent sheath inner radius and sheath outer radius respectively; L represents the total length of the three cross-connected sections of the multi-circuit cross-connected cable; ω represents angular frequency; D e Indicates the equivalent depth of the earth; R av Represents the geometric mean radius of the sheath, which is the average of r1 and r2; R e represents the equivalent resistance of the earth, and f represents the frequency of the power system, which is 50Hz.

[0037] The total induced voltage generated by the core current of each loop on each sheath sub-loop of the target loop in the current data processing stage is determined by the following formula:

[0038]

[0039] Among them, U SAk , U SBk , U SCk They represent the total induced voltage generated by the core current of each loop on each sheath sub-loop of the kth loop in the current data processing stage; n represents the total number of loops of the multi-loop cross-connection cable; L1, L2, L3 represent the lengths of the three small sections of the multi-loop cross-connection cable; U kA , U kB , U kC They represent the unit induced voltage on the A-phase, B-phase and C-phase sheaths of the k-th loop due to the core current of each loop respectively.

[0040] U kA , U kB , U kC It can be determined by the following formula:

[0041]

[0042] Among them, I iA ,I iB ,I iC Respectively represent the core current of phase A, phase B, and phase C on the i-th circuit; S AkAi S represents the phase distance between phase A of the kth loop and phase A of the ith loop; AkBi represents the phase distance between phase A of the kth loop and phase B of the ith loop; S AkCi represents the phase distance between phase A of the kth loop and phase C of the ith loop; S BkAi represents the phase distance between the B phase of the kth loop and the A phase of the ith loop; S BkBi represents the phase distance between the kth loop B phase and the ith loop B phase; S BkCi represents the phase distance between phase B of the kth loop and phase C of the ith loop; S CkAi represents the phase distance between the kth loop C phase and the ith loop A phase; S CkBi represents the phase distance between the kth loop C phase and the ith loop B phase; S CkCi It represents the phase distance between the C phase of the kth loop and the C phase of the ith loop; ω represents the angular frequency, and j represents the imaginary unit.

[0043] The sheath circulating current value of each sheath sub-circuit of each circuit in the first determination of electrical data is obtained based on the following formula:

[0044]

[0045] in, They represent the sheath circulating current values ​​of each sheath sub-circuit of the kth circuit in the first stage of determining the electrical data, R d It represents the sum of the grounding resistance of each circuit and the equivalent resistance of the earth.

[0046] S120: Determine new electrical data according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage.

[0047] Among them, this scheme can determine the total induced voltage generated by the sheath circulating current of each circuit on each sheath sub-circuit of the target circuit in the current data processing stage according to the sheath circulating current value of each sheath sub-circuit of each circuit in the current data processing stage. Then, the sum of the total induced voltage generated by the sheath circulating current of each circuit on each sheath sub-circuit of the target circuit in the current data processing stage and the total induced voltage generated by the core current of each circuit on each sheath sub-circuit of the target circuit in the current data processing stage determined in the above steps is used as the new total induced voltage of each sheath sub-circuit of the target circuit to be loaded and used in the next data processing stage.

[0048] Exemplarily, the total induced voltage generated by the sheath circulating current of each loop on each sheath sub-loop of the target loop in the current data processing stage is determined based on the following formula:

[0049]

[0050] Among them, U S ' Ak , U S ' Bk , U S ' Ck They represent the total induced voltage generated by the sheath circulating current of each loop on each sheath sub-loop of the kth loop in the current data processing stage; U kA1 , U kA2 , U kA3 They represent the induced voltage per unit length generated by the sheath circulating current of each loop on each small section of the first sheath sub-loop of the kth loop; U kB1 , U kB2 , U kB3 They represent the induced voltage per unit length generated by the sheath circulating current of each loop on each small section of the second sheath sub-loop of the kth loop; U kC1 , U kC2 , U kC3 They are the induced voltage per unit length generated by the sheath circulating current of each loop on each small section of the third sheath sub-loop of the kth loop. Among them:

[0051]

[0052]

[0053]

[0054] Among them, I SAi ,I SBi ,I SCi Respectively represent the sheath circulation value of each sheath sub-loop of the i-th loop in the current data processing stage; X AkAi , X AkBi , X AkCi They represent the mutual inductance between the phase A of the k-th loop and the phase A of the i-th loop, the mutual inductance between the phase A of the k-th loop and the phase B of the i-th loop, and the mutual inductance between the sheath of the phase A of the k-th loop and the phase C of the i-th loop; X BkBi , X BkCi , X BkAi They represent the mutual inductance between the kth loop B phase and the ith loop B phase, the mutual inductance between the kth loop B phase and the ith loop C phase, and the mutual inductance between the kth loop B phase and the ith loop A phase sheath; X CkAi , X CkBi , X CkCi They respectively represent the mutual inductance between the kth loop C phase and the ith loop A phase, the mutual inductance between the kth loop C phase and the ith loop B phase, and the mutual inductance between the kth loop C phase and the ith loop C phase sheath. The determination process of the mutual inductance between the phases can refer to the relevant technology.

[0055] This scheme can determine the new total induced voltage of each sheath sub-loop of the target loop loaded and used in the next data processing stage based on the following iterative formula:

[0056]

[0057] in, They respectively represent the new total induced voltages of each sheath sub-loop of the k-th loop loaded and used in the next data processing stage; They respectively represent the total induced voltages generated by the sheath circulating currents of each loop on each sheath sub-loop of the kth loop in the current data processing stage.

[0058] The new sheath circulation value of each sheath sub-loop of the target loop loaded and used when entering the next data processing stage is determined based on the following formula:

[0059]

[0060] in, They represent the new sheath circulating current values ​​of each sheath sub-loop of the kth loop loaded and used when entering the next data processing stage, Z represents the sheath self-impedance parameter of each phase cable sheath, R dIt represents the sum of two grounding resistances and the equivalent resistance of the earth.

[0061] S130: Perform convergence condition judgment on the new electrical data to determine the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition.

[0062] Specifically, after determining the sheath circulation current values ​​of each sheath sub-circuit of the target circuit loaded and used in each data processing stage, the scheme can respectively judge the convergence conditions of each new sheath circulation current value to determine the sheath circulation current of each sheath sub-circuit of the target circuit that meets the convergence condition. The convergence condition can be that the absolute value of the difference between the sheath circulation current values ​​of each sheath sub-circuit of the target circuit determined in the current data processing stage and the sheath circulation current values ​​of each sheath sub-circuit of the target circuit determined in the previous data processing stage is less than a preset threshold, such as 0.001.

[0063] The technical solution provided by the embodiment of the present invention determines the electrical data used in the current data processing stage; wherein the electrical data includes the total induced voltage of each sheath sub-circuit of the target circuit and the sheath circulating current value of each sheath sub-circuit of each circuit, and the target circuit is one of the circuits in the multi-circuit cross-connected cable; according to the sheath circulating current value of each sheath sub-circuit of each circuit in the current data processing stage, new electrical data is determined for loading and using the new electrical data when entering the next data processing stage; the convergence condition of the new electrical data is judged to determine the sheath circulating current of each sheath sub-circuit of the target circuit that meets the convergence condition. By executing the technical solution provided by the embodiment of the present invention, the calculation of sheath circulating current applicable to any multi-circuit can be realized, which is convenient and flexible to realize, and can make up for the shortcomings of the high time complexity and space complexity of the existing multi-circuit circulation calculation.

[0064] Figure 4 1 is a flow chart of a method for determining sheath circulation current of a multi-circuit cross-connected cable provided by an embodiment of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiment. Figure 4 As shown, the method for determining the sheath circulation current of a multi-circuit cross-connect cable in an embodiment of the present invention may include:

[0065] S210: Determine the length of at least a small section of a multi-circuit cross-connect cable.

[0066] Among them, Figure 3 As shown, this solution can determine the lengths L1, L2, L3 of the three cross-connection segments A1, A2, A3, B1, B2, B3, C1, C2, C3 of the multi-circuit cross-connection cable.

[0067] S220: Determine the unit induced voltage of each phase sheath of each loop of the core current of each loop in the current data processing stage.

[0068] The current data processing stage is a stage for first determining electrical data.

[0069] In this embodiment, optionally, the unit induced voltage of the core current of each circuit on the sheath of each phase of each circuit in the current data processing stage is determined, including: determining the core current of each phase on each circuit in the current data processing stage; respectively determining the phase spacing between each phase in each circuit and each phase of other circuits; and determining the unit induced voltage of the core current of each circuit on the sheath of each phase of each circuit in the current data processing stage according to the core current of each phase on each circuit and the phase spacing.

[0070] For example, if the current data processing stage is a stage for determining electrical data for the first time, the present solution can determine the unit induced voltage of each loop core current on each phase sheath of each loop in the current data processing stage based on the following formula:

[0071]

[0072] Among them, I iA ,I iB ,I iC Respectively represent the core current of phase A, phase B, and phase C on the i-th circuit; S AkAi S represents the phase distance between phase A of the kth loop and phase A of the ith loop; AkBi represents the phase distance between phase A of the kth loop and phase B of the ith loop; S AkCi represents the phase distance between phase A of the kth loop and phase C of the ith loop; S BkAi represents the phase distance between the B phase of the kth loop and the A phase of the ith loop; S BkBi represents the phase distance between the kth loop B phase and the ith loop B phase; S BkCi represents the phase distance between phase B of the kth loop and phase C of the ith loop; S CkAi represents the phase distance between the kth loop C phase and the ith loop A phase; S CkBi represents the phase distance between the kth loop C phase and the ith loop B phase; S CkCi It represents the phase distance between the C phase of the kth loop and the C phase of the ith loop; ω represents the angular frequency, and j represents the imaginary unit.

[0073] Therefore, by determining the unit induced voltage of each loop core current on each phase sheath of each loop in the current data processing stage, it is possible to provide a reliable data source for subsequent steps.

[0074] S230: Determine the total induced voltage of each sheath sub-loop of each loop in the current data processing stage according to the length of at least a small section of the multi-loop cross-connect cable and the unit induced voltage on the sheath of each phase.

[0075] For example, if the current data processing stage is the stage of determining electrical data for the first time, this solution can use the total induced voltage generated by the core current of each circuit on each sheath sub-circuit of each circuit in the current data processing stage as the total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage. The total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage is determined based on the following formula:

[0076]

[0077] Among them, U SAk , U SBk , U SCk They represent the total induced voltage generated by the core current of each loop on each sheath sub-loop of the kth loop in the current data processing stage; n represents the total number of loops of the multi-loop cross-connection cable; L1, L2, L3 represent the lengths of the three small sections of the multi-loop cross-connection cable; U kA , U kB , U kC They represent the unit induced voltage on the A-phase, B-phase and C-phase sheaths of the k-th loop due to the core current of each loop respectively.

[0078] S240: Determine the sheath self-impedance parameters, earth equivalent resistance, and grounding resistance of the multi-circuit cross-connection cable respectively.

[0079] Exemplarily, the sheath self-impedance parameter Z of the multi-circuit cross-connect cable can be determined based on the following formula: Z=R+jX,

[0080] in,

[0081] Wherein, j represents an imaginary unit, ρ represents the sheath resistivity; α represents the sheath resistance temperature coefficient; T represents the sheath operating temperature; r1 and r2 represent the sheath inner radius and sheath outer radius respectively; L represents the total length of the three cross-connected sections of the multi-circuit cross-connected cable; ω represents the angular frequency; D e Indicates the equivalent depth of the earth; R av Represents the geometric mean radius of the sheath, which is the average of r1 and r2; R e represents the equivalent resistance of the earth, and f represents the frequency of the power system, which is 50Hz.

[0082] S250: Determine the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage according to the sheath self-impedance parameter, the earth equivalent resistance, the ground resistance and the total induced voltage of each sheath sub-loop of each loop in the current data processing stage.

[0083] Exemplarily, if the current data processing stage is a stage of determining electrical data for the first time, the present solution may determine the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage based on the following formula:

[0084]

[0085] in, They represent the sheath circulating current values ​​of each sheath sub-circuit of the kth circuit in the first stage of determining the electrical data, R d It represents the sum of the grounding resistance of the kth loop and the equivalent resistance of the earth.

[0086] S260: Determine new electrical data according to the sheath circulating current value of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage.

[0087] In this embodiment, optionally, new electrical data is determined based on the sheath circulating current values ​​of each sheath sub-loop of each loop in the current data processing stage, including: determining a new total induced voltage of each sheath sub-loop of the target loop based on the sheath circulating current values ​​of each sheath sub-loop of each loop in the current data processing stage; determining a new sheath circulating current value of each sheath sub-loop of the target loop based on the sheath self-impedance parameter, the earth equivalent resistance, the grounding resistance and the new total induced voltage of each sheath sub-loop.

[0088] Exemplarily, this scheme can determine the total induced voltage generated by the sheath circulating current of each loop on each sheath sub-loop of the target loop in the current data processing stage according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage. Then, the sum of the total induced voltage generated by the sheath circulating current of each loop on each sheath sub-loop of the target loop in the current data processing stage and the total induced voltage generated by the core current of each loop on each sheath sub-loop of the target loop in the current data processing stage determined in the previous steps is used as the new total induced voltage of each sheath sub-loop of the target loop to be loaded and used in the next data processing stage. Then, the new sheath circulating current value of each sheath sub-loop of the target loop is determined based on the following formula:

[0089]

[0090] in, They represent the new sheath circulating current values ​​of each sheath sub-loop of the kth loop loaded and used when entering the next data processing stage, Z represents the sheath self-impedance parameter of the multi-loop cross-connection cable, and R d It represents the sum of two grounding resistances and the equivalent resistance of the earth.

[0091] Therefore, by determining the new total induced voltage of each sheath sub-loop of the target loop in the next data processing stage and the new sheath circulating current value of each sheath sub-loop of the target loop in the next data processing stage according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage, it is possible to iteratively calculate the electrical data, which is simple and easy to implement, and can provide a reliable data source for determining the sheath circulating current value of each sheath sub-loop of the final target loop.

[0092] In a feasible embodiment, optionally, a new total induced voltage of each sheath sub-loop of the target loop is determined based on the sheath circulating current values ​​of each sheath sub-loop of each loop in the current data processing stage, including: determining the total induced voltage generated in each sheath sub-loop of the target loop by the sheath circulating current of each loop in the current data processing stage according to the sheath circulating current values ​​of each sheath sub-loop of each loop in the current data processing stage; taking the sum of the total induced voltage generated in each sheath sub-loop of the target loop by the core current of each loop in the current data processing stage and the total induced voltage generated in each sheath sub-loop of the target loop by the sheath circulating current of each loop in the current data processing stage as the new total induced voltage of each sheath sub-loop of the target loop.

[0093] Exemplarily, the total induced voltage generated by the sheath circulating current of each loop on each sheath sub-loop of the target loop in the current data processing stage is determined based on the following formula:

[0094]

[0095] Among them, U S ' Ak , U S ' Bk , U S ' Ck They represent the total induced voltage generated by the sheath circulating current of each loop on each sheath sub-loop of the kth loop in the current data processing stage; U kA1 , U kA2 , U kA3 They represent the induced voltage per unit length generated by the sheath circulating current of each loop on each small section of the first sheath sub-loop of the kth loop; U kB1 , U kB2 , U kB3 They represent the induced voltage per unit length generated by the sheath circulating current of each loop on each small section of the second sheath sub-loop of the kth loop; U kC1 , U kC2 , U kC3 They are the induced voltage per unit length generated by the sheath circulating current of each loop on each small section of the third sheath sub-loop of the kth loop. Among them:

[0096]

[0097]

[0098]

[0099] Among them, I SAi ,I SBi ,I SCi Respectively represent the sheath circulation value of each sheath sub-loop of the i-th loop in the current data processing stage; X AkAi , X AkBi , X AkCi They represent the mutual inductance between the phase A of the k-th loop and the phase A of the i-th loop, the mutual inductance between the phase A of the k-th loop and the phase B of the i-th loop, and the mutual inductance between the sheath of the phase A of the k-th loop and the phase C of the i-th loop; X BkBi , X BkCi , X BkAi They represent the mutual inductance between the kth loop B phase and the ith loop B phase, the mutual inductance between the kth loop B phase and the ith loop C phase, and the mutual inductance between the kth loop B phase and the ith loop A phase sheath; X CkAi , X CkBi , X CkCi They respectively represent the mutual inductance between the kth loop C phase and the ith loop A phase, the mutual inductance between the kth loop C phase and the ith loop B phase, and the mutual inductance between the kth loop C phase and the ith loop C phase sheath. The determination process of the mutual inductance between the phases can refer to the relevant technology.

[0100] The new total induced voltage of each sheath sub-loop of the target loop used for loading in the next data processing stage is determined based on the following iterative formula:

[0101]

[0102] in, They respectively represent the new total induced voltages of each sheath sub-loop of the k-th loop loaded and used in the next data processing stage; They respectively represent the total induced voltages generated by the sheath circulating currents of each loop on each sheath sub-loop of the kth loop in the current data processing stage.

[0103] Therefore, the total induced voltage generated by the sheath circulating current of each loop in each sheath sub-loop of the target loop in the current data processing stage is determined according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage; the total induced voltage generated by the core current of each loop in each sheath sub-loop of the target loop in the current data processing stage and the sum of the total induced voltage generated by the sheath circulating current of each loop in each sheath sub-loop of the target loop in the current data processing stage are used as the new total induced voltage of each sheath sub-loop of the target loop. The electrical data of the next data processing stage can be determined in an iterative manner, which is simple and easy to implement, and provides a reliable data source for subsequent steps.

[0104] In this embodiment, optionally, the current data processing stage is not a stage for determining electrical data for the first time; determining the electrical data used in the current data processing stage includes: taking the new total induced voltage of each sheath sub-loop of the target loop as the total induced voltage of each sheath sub-loop of the target loop used in the current data processing stage; determining the sheath circulating current value of each sheath sub-loop of the target loop used in the current data processing stage according to the sheath self-impedance parameter, the earth equivalent resistance, the grounding resistance and the total induced voltage of each sheath sub-loop of the target loop used in the current data processing stage.

[0105] If the current data processing stage is not the stage for determining electrical data for the first time, this solution can use the sum of the total induced voltage generated by the core current of each circuit on each sheath sub-circuit of the target circuit in the previous data processing stage and the total induced voltage generated by the sheath circulating current of each circuit on each sheath sub-circuit of the target circuit in the previous data processing stage as the total induced voltage of each sheath sub-circuit of the target circuit used in the current data processing stage. Then, according to the iterative formula The sheath self-impedance parameter, earth equivalent resistance, ground resistance and the total induced voltage of each sheath sub-loop of the target loop used in the current data processing stage determine the sheath circulating current value of each sheath sub-loop of the target loop used in the current data processing stage. It can be realized based on the electrical data of the previous data processing stage to determine the electrical data of the next data processing stage, which is simple and easy to implement and provides a reliable data source for subsequent steps.

[0106] S270: Perform convergence condition judgment on the new electrical data to determine the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition.

[0107] In another feasible embodiment, optionally, a convergence condition judgment is performed on the new electrical data to determine the sheath circulation current of each sheath sub-loop of the target loop that meets the convergence condition, including: if it is determined that the absolute value of the difference between the new sheath circulation current value and the sheath circulation current value used in the previous data processing stage is less than a preset threshold, then it is determined that the new sheath circulation current value meets the convergence condition, and the new sheath circulation current value is used as the sheath circulation current of each sheath sub-loop of the target loop.

[0108] For example, the preset threshold may be 0.001, the preset threshold may be 0.003, and the preset threshold may be set according to actual needs. The convergence condition of this solution may be as follows:

[0109]

[0110] This scheme can respectively determine the absolute value of the difference between the new sheath circulation value of each sheath sub-loop in the kth loop and the sheath circulation value of the corresponding sheath sub-loop in the previous data processing stage. If each absolute value is less than the preset threshold value 0.001, it means that the new sheath circulation value meets the convergence condition, and each new sheath circulation value is used as the sheath circulation of each sheath sub-loop of the kth loop.

[0111] Therefore, by judging the convergence condition of the sheath circulation current values ​​of each sheath sub-loop of the target loop determined in each data processing stage, the sheath circulation current of each sheath sub-loop of the target loop can be scientifically and accurately determined.

[0112] In another feasible implementation, optionally, after determining the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition, it also includes: traversing all other loops in the multi-loop cross-connect cable except the target loop; and determining the sheath circulation of each sheath sub-loop of all other loops in turn.

[0113] Specifically, after the sheath circulating current of each sheath sub-loop of the target loop in the multi-loop cross-connected cable is determined, the sheath circulating current of each sheath sub-loop of the next loop is continued to be determined based on the determined sheath circulating current of each sheath sub-loop of the target loop and the initial value of the sheath circulating current of each sheath sub-loop of other loops, until the sheath circulating current of each sheath sub-loop of each loop in the multi-loop cross-connected cable converges, and the determination of the sheath circulating current of each sheath sub-loop of multiple loops is completed.

[0114] The technical solution provided by the embodiment of the present invention determines the length of at least a small section of a multi-circuit cross-connected cable; determines the unit induced voltage of the core current of each circuit on the sheath of each phase of each circuit in the current data processing stage; determines the total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage according to the length of at least a small section of the multi-circuit cross-connected cable and the unit induced voltage on the sheath of each phase; determines the sheath self-impedance parameter, earth equivalent resistance, and grounding resistance of the multi-circuit cross-connected cable respectively; determines the sheath circulating current value of each sheath sub-circuit of each circuit in the current data processing stage according to the sheath self-impedance parameter, earth equivalent resistance, grounding resistance, and the total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage; determines new electrical data according to the sheath circulating current value of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage; and performs convergence condition judgment on the new electrical data to determine the sheath circulating current of each sheath sub-circuit of the target circuit that meets the convergence condition. By executing the technical solution provided by the embodiment of the present invention, it is possible to determine the circulation of any multi-loop sheath, which is easy to implement and can make up for the shortcomings of the existing multi-loop circulation calculation, which has high time complexity and space complexity.

[0115] Figure 5 FIG. 1 is a schematic diagram of the structure of a sheath circulation current determination device for a multi-circuit cross-connected cable provided by an embodiment of the present invention. The device can be configured in an electronic device for determining the sheath circulation current of a multi-circuit cross-connected cable. Figure 5 As shown, the device comprises:

[0116] The electrical data determination module 310 is used to determine the electrical data used in the current data processing stage; wherein the electrical data includes the total induced voltage of each sheath sub-loop of the target loop and the sheath circulating current value of each sheath sub-loop of each loop, and the target loop is one of the loops in the multi-loop cross-connect cable;

[0117] The electrical data updating module 320 is used to determine new electrical data according to the sheath circulation current value of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage;

[0118] The sheath circulation determination module 330 is used to perform convergence condition judgment on the new electrical data and determine the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition.

[0119] Optionally, the current data processing stage is a stage for first determining electrical data; the electrical data determination module 310 includes at least one small section length determination unit, which is used to determine the length of at least one small section of the multi-circuit cross-connected cable; a unit induced voltage determination unit, which is used to determine the unit induced voltage of the core current of each circuit on the sheath of each phase of each circuit in the current data processing stage; a total induced voltage determination unit, which is used to determine the total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage according to the length of at least one small section of the multi-circuit cross-connected cable and the unit induced voltage on the sheath of each phase; an impedance parameter determination unit, which is used to respectively determine the sheath self-impedance parameter, the earth equivalent resistance, and the grounding resistance of the multi-circuit cross-connected cable; a sheath circulating current value determination unit, which is used to determine the sheath circulating current value of each sheath sub-circuit of each circuit in the current data processing stage according to the sheath self-impedance parameter, the earth equivalent resistance, the grounding resistance and the total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage.

[0120] Optionally, the unit induced voltage determination unit includes a phase core current determination subunit, which is used to determine the core current of each phase on each loop in the current data processing stage; a phase spacing determination subunit, which is used to respectively determine the phase spacing between each phase in each loop and each phase of other loops; and a unit induced voltage determination subunit, which is used to determine the unit induced voltage of the core current of each loop on the sheath of each phase of each loop in the current data processing stage based on the core current of each phase on each loop and each phase spacing.

[0121] Optionally, the electrical data updating module 320 comprises a total induced voltage updating unit, which is used to determine a new total induced voltage of each sheath sub-loop of the target loop according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage; and a sheath circulating current value updating unit, which is used to determine a new sheath circulating current value of each sheath sub-loop of the target loop according to the sheath self-impedance parameter, the earth equivalent resistance, the grounding resistance and the new total induced voltage of each sheath sub-loop.

[0122] Optionally, the total induced voltage update unit includes a sheath circulating current induced voltage update sub-unit, which is used to determine the total induced voltage generated by the sheath circulating current of each loop in each sheath sub-loop of the target loop in the current data processing stage according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage; and the total induced voltage update sub-unit is used to use the sum of the total induced voltage generated by the core current of each loop in each sheath sub-loop of the target loop in the current data processing stage and the total induced voltage generated by the sheath circulating current of each loop in each sheath sub-loop of the target loop in the current data processing stage as the new total induced voltage of each sheath sub-loop of the target loop.

[0123] Optionally, the current data processing stage is not a stage for determining electrical data for the first time; the electrical data determination module 310 includes a total induced voltage determination unit for the current data processing stage, which is used to use the new total induced voltage of each sheath sub-loop of the target loop as the total induced voltage of each sheath sub-loop of the target loop used in the current data processing stage; and a sheath circulating current value determination unit for the current data processing stage, which is used to determine the sheath circulating current value of each sheath sub-loop of the target loop used in the current data processing stage based on the sheath self-impedance parameter, the earth equivalent resistance, the grounding resistance and the total induced voltage of each sheath sub-loop of the target loop used in the current data processing stage.

[0124] Optionally, the sheath circulation determination module 330 is specifically used to determine that the new sheath circulation value meets the convergence condition if the absolute value of the difference between the new sheath circulation value and the sheath circulation value used in the previous data processing stage is less than a preset threshold, and use the new sheath circulation value as the sheath circulation of each sheath sub-loop of the target loop.

[0125] Optionally, the device also includes an other loop traversal unit, which is used to traverse all other loops in the multi-loop cross-connected cable except the target loop after determining the sheath circulation of each sheath sub-loop of the target loop that meets the convergence conditions; and an other loop sheath circulation determination unit, which is used to determine the sheath circulation of each sheath sub-loop of all other loops in turn.

[0126] The device provided in the above-mentioned embodiment can execute the sheath circulation current determination method of the multi-circuit cross-connected cable provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0127] Figure 6 A schematic diagram of the structure of an electronic device 60 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0128] like Figure 6As shown, the electronic device 60 includes at least one processor 61, and a memory connected to the at least one processor 61, such as a read-only memory (ROM) 62, a random access memory (RAM) 63, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 61 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 62 or the computer program loaded from the storage unit 68 to the random access memory (RAM) 63. In the RAM 63, various programs and data required for the operation of the electronic device 60 can also be stored. The processor 61, the ROM 62, and the RAM 63 are connected to each other via a bus 64. An input / output (I / O) interface 65 is also connected to the bus 64.

[0129] A number of components in the electronic device 60 are connected to the I / O interface 65, including: an input unit 66, such as a keyboard, a mouse, etc.; an output unit 67, such as various types of displays, speakers, etc.; a storage unit 68, such as a disk, an optical disk, etc.; and a communication unit 69, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 69 allows the electronic device 60 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0130] The processor 61 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 61 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 61 executes the various methods and processes described above, such as the intelligent voice outbound calling method.

[0131] In some embodiments, the intelligent voice outbound calling method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 68. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 60 via the ROM 62 and / or the communication unit 69. When the computer program is loaded into the RAM 63 and executed by the processor 61, one or more steps of the intelligent voice outbound calling method described above may be performed. Alternatively, in other embodiments, the processor 61 may be configured to execute the intelligent voice outbound calling method in any other appropriate manner (e.g., by means of firmware).

[0132] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0133] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0134] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0135] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0136] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0137] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0138] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0139] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining sheath circulation current of a multi-circuit cross-connected cable, characterized in that: include: Determine the electrical data used in the current data processing stage; wherein the electrical data includes the total induced voltage of each sheath sub-loop of the target loop and the sheath circulating current value of each sheath sub-loop of each loop, and the target loop is one of the loops in the multi-loop cross-connect cable; Determine new electrical data according to the sheath circulation current value of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage; Performing convergence condition judgment on the new electrical data to determine the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition; Wherein, the current data processing stage is a stage of first determining electrical data; Determine the electrical data used in the current data processing stage, including: Determine the length of at least a small section of multi-circuit cross-connect cable; Determine the unit induced voltage of each loop core current on each phase sheath of each loop at the current data processing stage; Determining the total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage according to the length of at least a small section of the multi-circuit cross-connect cable and the unit induced voltage on the sheath of each phase; Determine the sheath self-impedance parameters, earth equivalent resistance and grounding resistance of multi-circuit cross-connection cables respectively; Determine the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage according to the sheath self-impedance parameter, the earth equivalent resistance, the ground resistance and the total induced voltage of each sheath sub-loop of each loop in the current data processing stage; Wherein, the new electrical data is determined according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage, including: Determine the new total induced voltage of each sheath sub-loop of the target loop according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage; Determine new sheath circulating current values ​​of each sheath sub-loop of the target loop according to the sheath self-impedance parameter, the earth equivalent resistance, the ground resistance and the new total induced voltage of each sheath sub-loop; The step of judging the convergence condition of the new electrical data and determining the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition includes: If it is determined that the absolute value of the difference between the new sheath circulation value and the sheath circulation value used in the previous data processing stage is less than a preset threshold, it is determined that the new sheath circulation value meets the convergence condition, and the new sheath circulation value is used as the sheath circulation of each sheath sub-loop of the target loop.

2. The method according to claim 1, characterized in that Determine the unit induced voltage of each loop core current on each phase sheath of each loop at the current data processing stage, including: Determine the core current of each phase on each loop in the current data processing stage; Determine the phase spacing between each phase in each circuit and each phase in other circuits respectively; The unit induced voltage of the core current of each circuit on the sheath of each phase of each circuit in the current data processing stage is determined according to the core current of each phase on each circuit and the phase spacing.

3. The method according to claim 1, characterized in that According to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage, the new total induced voltage of each sheath sub-loop of the target loop is determined, including: Determine the total induced voltage generated by the sheath circulating current of each loop in each sheath sub-loop of the target loop in the current data processing stage according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage; The total induced voltage generated by the core current of each loop in each sheath sub-loop of the target loop in the current data processing stage, and the sum of the total induced voltage generated by the sheath circulating current of each loop in each sheath sub-loop of the target loop in the current data processing stage, are used as the new total induced voltage of each sheath sub-loop of the target loop.

4. The method according to claim 3, characterized in that The current data processing stage is not a stage for determining electrical data for the first time; Determine the electrical data used in the current data processing stage, including: Using the new total induced voltage of each sheath sub-loop of the target loop as the total induced voltage of each sheath sub-loop of the target loop used in the current data processing stage; The sheath circulating current values ​​of each sheath sub-loop of the target loop used in the current data processing stage are determined according to the sheath self-impedance parameter, the earth equivalent resistance, the grounding resistance and the total induced voltage of each sheath sub-loop of the target loop used in the current data processing stage.

5. The method according to claim 1, characterized in that After determining the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition, it also includes: Traversing all loops except the target loop in the multi-loop cross-connect cable; The sheath circulation of each sheath sub-circuit of all other circuits is determined in sequence.

6. A device for determining sheath circulation current of a multi-circuit cross-connected cable, characterized in that: include: An electrical data determination module, used to determine electrical data used in the current data processing stage; wherein the electrical data includes the total induced voltage of each sheath sub-loop of the target loop and the sheath circulating current value of each sheath sub-loop of each loop, wherein the target loop is one of the loops in the multi-loop cross-connect cable; An electrical data updating module, for determining new electrical data according to the sheath circulation current value of each sheath sub-circuit of each circuit in the current data processing stage, so as to load and use the new electrical data when entering the next data processing stage; A sheath circulation determination module, used to determine the convergence condition of the new electrical data, and determine the sheath circulation of each sheath sub-loop of the target loop that meets the convergence condition; The current data processing stage is a stage for first determining electrical data; the electrical data determination module includes: at least one small section length determining unit, used to determine the length of at least one small section of the multi-circuit cross-connect cable; A unit induced voltage determination unit, used to determine the unit induced voltage of each loop core current on each phase sheath of each loop in the current data processing stage; a total induced voltage determination unit, for determining the total induced voltage of each sheath sub-circuit of each circuit in the current data processing stage according to the length of at least a small section of the multi-circuit cross-connection cable and the unit induced voltage on the sheath of each phase; An impedance parameter determination unit, used to respectively determine the sheath self-impedance parameter, earth equivalent resistance, and ground resistance of a multi-circuit cross-connected cable; a sheath circulating current value determining unit, for determining the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage according to the sheath self-impedance parameter, the earth equivalent resistance, the ground resistance and the total induced voltage of each sheath sub-loop of each loop in the current data processing stage; Wherein, the electrical data updating module comprises: A total induced voltage updating unit, used to determine a new total induced voltage of each sheath sub-loop of the target loop according to the sheath circulating current value of each sheath sub-loop of each loop in the current data processing stage; A sheath circulating current value updating unit, used for determining a new sheath circulating current value of each sheath sub-loop of the target loop according to the sheath self-impedance parameter, the earth equivalent resistance, the ground resistance and the new total induced voltage of each sheath sub-loop; Among them, the sheath circulation determination module is specifically used to determine that the new sheath circulation value meets the convergence condition if the absolute value of the difference between the new sheath circulation value and the sheath circulation value used in the previous data processing stage is less than a preset threshold, and use the new sheath circulation value as the sheath circulation of each sheath sub-loop of the target loop.

7. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the sheath circulation current determination method for a multi-circuit cross-connect cable according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the sheath circulation current determination method for a multi-circuit cross-connect cable according to any one of claims 1 to 5 when executed.

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