Method, system and medium for measuring inter-phase transverse magnetic field between vacuum circuit breaker contacts

Abstract

The application discloses a kind of vacuum circuit breaker contact between phase interphase transverse magnetic field measurement method, system and medium.The method comprises: establishing vacuum circuit breaker three-phase model;The magnetic field space-time distribution of each phase of three-phase model and contact plane when current is applied is calculated;Remove the influence of transverse magnetic field generated by conductive rod, and calculate the self-generated magnetic field distribution of each single phase when only current is applied on the single phase;The applied transverse magnetic field of the phase is obtained by subtracting the self-generated magnetic field distribution of each single phase when only current is applied on the single phase from the magnetic field space-time distribution of each phase of three-phase model and contact plane when current is applied.Through the method, the transverse magnetic field applied on the contact between a certain phase of vacuum circuit breaker three-phase by the conductive rod of the other two phases and the phase can be more accurately obtained, which is conducive to further optimizing the three-phase space structure arrangement and contact magnetic field design, accurately mastering the arc ablation characteristics and breaking performance of vacuum circuit breaker, and optimizing the arc-extinguishing strategy and shielding scheme of vacuum circuit breaker.

Description

Technical Field

[0001] This invention belongs to the technical field of magnetic field measurement of vacuum circuit breakers, specifically relating to a method, system, and medium for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker. Background Technology

[0002] Vacuum arc extinguishing technology is a crucial technique in current interruption, characterized by its high breaking capacity and rapid dielectric recovery, attracting significant attention from researchers both domestically and internationally. In AC interruption, vacuum circuit breakers are typically arranged in a straight line or a triangular pattern. Furthermore, in combined enclosed electrical systems, vacuum circuit breakers may be housed within a sealed metal casing, resulting in a more compact phase-to-phase distribution. When a phase contact of a vacuum circuit breaker opens, the arc between the contacts is influenced by the transverse magnetic fields generated by the other two phases, as well as by the transverse magnetic field generated by the connecting conductors of that phase. This magnetic field affects the arc movement between the contacts, potentially leading to uneven burning and ultimately, interruption failure.

[0003] Calculating the transverse magnetic field experienced by a phase contact when it opens is a crucial issue to consider when designing and arranging the three-phase positions and contact structure of a vacuum circuit breaker. Currently, the main method for calculating the transverse magnetic field between contacts is to directly model the three phases of the vacuum circuit breaker and calculate the total transverse magnetic field magnitude of a single phase. However, this method does not consider the influence of the contact structure itself or the self-generated magnetic field of the vacuum arc when the contacts open. The calculation results have significant errors, which is detrimental to the arrangement and optimization design of the contact structure and the three-phase positions of the vacuum circuit breaker. Summary of the Invention

[0004] The main objective of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a method, system and medium for measuring the interphase transverse magnetic field between vacuum circuit breaker contacts. By comprehensively considering the contact structure and the self-generated magnetic field of the vacuum arc, the applied transverse magnetic field between the contacts can be analyzed more accurately.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In one aspect, the present invention also provides a method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker, comprising the following steps:

[0007] Establish a three-phase model of a vacuum circuit breaker;

[0008] Calculate the spatiotemporal distribution of the magnetic field between each phase and the contact in the three-phase model when current is applied;

[0009] Remove the influence of the transverse magnetic field generated by the conductive rod, and calculate the distribution of the self-generated magnetic field of each phase when current is applied only to each phase;

[0010] The external transverse magnetic field of a phase is obtained by subtracting the self-generated magnetic field distribution of a single phase when current is applied only on each single phase from the spatiotemporal distribution of the magnetic field between each phase and the contact plane in the three-phase model when current is applied.

[0011] As a preferred technical solution, the establishment of the single-phase model and three-phase model of the vacuum circuit breaker specifically includes:

[0012] Based on the single-phase structure and connecting lines of the vacuum circuit breaker, a single-phase model is established, including the conductive rod, contacts, and electric arc. The contact model is not simplified.

[0013] Based on the three-phase position structure of the vacuum circuit breaker, a three-phase model is established, namely phase A, phase B and phase C. If it is in a fully enclosed combined electrical appliance, it also includes a metal casing.

[0014] Each phase of the electric arc is set as a conductive column, the conductivity of which is set according to the conductivity of the vacuum arc, and the radius is determined according to the diameter of the vacuum arc.

[0015] As a preferred technical solution, the calculation of the spatiotemporal distribution of the magnetic field between each phase of the three-phase model and the contact plane when the applied current is applied specifically includes:

[0016] Three-phase AC currents with a phase angle difference of 120 degrees are applied to phases A, B, and C of the three-phase model, and their magnitudes are the rated short-circuit currents of the vacuum circuit breaker.

[0017] The spatiotemporal distribution of the magnetic field of a vacuum circuit breaker is calculated by solving Maxwell's equations.

[0018] The spatiotemporal distribution of the magnetic field in the plane between the contacts of phase A is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. A1 (t); Extract the spatiotemporal distribution of the magnetic field in the plane between the contacts of phase B. The extracted magnetic field is a two-dimensional vector B in the plane. B1 (t); Extract the spatiotemporal distribution of the magnetic field in the plane between the contacts of phase C. The extracted magnetic field is a two-dimensional vector B in the plane. C1 (t).

[0019] As a preferred technical solution, the removal of the influence of the transverse magnetic field generated by the conductive rod specifically involves:

[0020] Based on the three-phase model, the conductive rods at the top and bottom ends of the phase under test are removed, while other model parameters remain unchanged.

[0021] As a preferred technical solution, the calculation only involves the distribution of the self-generated magnetic field of each single phase when a current is applied to each single phase, specifically:

[0022] When applying and calculating the applied current, the same alternating current is applied to phase A, while no alternating current is applied to phases B and C.

[0023] The self-generated magnetic field distribution of phase A of the vacuum circuit breaker is calculated, and the spatiotemporal distribution of the self-generated magnetic field in the plane between the contacts of phase A is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. A2 (t);

[0024] When applying and calculating the applied current, the same alternating current is applied to phase B, while no alternating current is applied to phases A and C.

[0025] The self-generated magnetic field distribution of phase B of the vacuum circuit breaker is calculated, and the spatiotemporal distribution of the self-generated magnetic field in the plane between the contacts of phase B is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. B2 (t);

[0026] When applying and calculating the applied current, the same alternating current is applied to phase C, while no alternating current is applied to phases A and B.

[0027] The self-generated magnetic field distribution of phase C of the vacuum circuit breaker is calculated, and the spatiotemporal distribution of the self-generated magnetic field in the plane between the contacts of phase C is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. C2 (t).

[0028] As a preferred technical solution, the method of obtaining the applied transverse magnetic field of a phase by subtracting the self-generated magnetic field distribution of a single phase when current is applied only from the spatiotemporal distribution of the magnetic field between each phase of the three-phase model and the contact plane when current is applied is as follows:

[0029] The spatiotemporal distribution of the magnetic field between phase A and the contact plane in the three-phase model when current is applied (B) A1 (t) Subtract the self-generated magnetic field distribution when a single current is applied to phase A B A2 (t), to obtain the external transverse magnetic field between the contacts of phase A;

[0030] The spatiotemporal distribution of the magnetic field between phase B and the contact plane in the three-phase model when current is applied. B1 (t) Subtract the self-generated magnetic field distribution when a single current is applied to phase B. B2 (t), to obtain the external transverse magnetic field between the contacts of phase B;

[0031] The spatiotemporal distribution of the magnetic field between phase C and the contact plane in the three-phase model when current is applied (B) C1 (t) Subtract the self-generated magnetic field distribution when a single current is applied to phase C B C2(t), to obtain the external transverse magnetic field between the contacts of the C phase.

[0032] Another aspect of the present invention provides a phase-to-phase transverse magnetic field measurement system for vacuum circuit breaker contacts, applied to the above-mentioned phase-to-phase transverse magnetic field measurement method for vacuum circuit breaker contacts, including a model building module, an overall magnetic field spatiotemporal distribution calculation module, a self-generated magnetic field distribution calculation module, and an external transverse magnetic field calculation module.

[0033] The model building module is used to establish a three-phase model of a vacuum circuit breaker;

[0034] The overall magnetic field spatiotemporal distribution calculation module is used to calculate the magnetic field spatiotemporal distribution of each phase of the three-phase model and the plane between the contacts when current is applied;

[0035] The self-generated magnetic field distribution calculation module is used to remove the influence of the transverse magnetic field generated by the conductive rod and to calculate the self-generated magnetic field distribution of a single phase when current is applied only to each single phase.

[0036] The external transverse magnetic field calculation module is used to obtain the external transverse magnetic field of a phase by subtracting the self-generated magnetic field distribution of a single phase when current is applied only on each single phase from the spatiotemporal distribution of the magnetic field between each phase and the contact plane of the three-phase model when current is applied.

[0037] In another aspect, the present invention also provides a storage medium storing a program that, when executed by a processor, implements the above-described method for measuring the interphase transverse magnetic field between vacuum circuit breaker contacts.

[0038] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0039] (1) The method proposed in this patent can more accurately obtain the transverse magnetic field between the contacts of a certain phase in a vacuum circuit breaker and the other two phases and the conductive rod of that phase, which is conducive to further optimizing the three-phase spatial structure layout and contact magnetic field design. It is also conducive to further accurately grasping the arc erosion characteristics and breaking performance of the vacuum circuit breaker.

[0040] (2) Obtaining the external transverse magnetic field distribution through the method proposed in this patent is beneficial to further optimize the arc extinguishing strategy and shielding scheme of the vacuum circuit breaker. Attached Figure Description

[0041] Figure 1 This is a flowchart of a method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the three-phase model constructed according to an embodiment of the present invention;

[0043] Figure 3This is a schematic diagram of the interphase transverse magnetic field measurement system between the contacts of a vacuum circuit breaker according to an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of the storage medium according to an embodiment of the present invention.

[0045] Explanation of icon numbers:

[0046] 1. Conductive rod; 2. Contact; 3. Electric arc; 4. Phase A; 5. Phase B; 6. Phase C; 7. Plane between contacts of Phase B; 8. Plane between contacts of Phase A; 9. Plane between contacts of Phase C; 11. Contact of Phase B; 12. Contact of Phase C; 13. Conductive rod of Phase B; 14. Conductive rod of Phase C. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0048] Example

[0049] like Figure 1 As shown, this embodiment provides a method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker, including the following steps:

[0050] Step 1: First, based on the single-phase structure and connecting lines of the vacuum circuit breaker, establish a single-phase model, which mainly includes several parts such as conductive rod 1, contact 2, and arc 3. Among them, contact 2 is a complete contact model and is not simplified.

[0051] Step 2: Next, based on the three-phase position structure of the vacuum circuit breaker, establish a three-phase model, such as... Figure 2 As shown, these are phase A (4), phase B (5), and phase C (6). If it is in a fully enclosed combined electrical appliance, it needs to include a metal casing.

[0052] Step 3: Next, set each phase of arc 3 as a conductive column, the conductivity of which is set according to the conductivity of the vacuum arc, and the radius is determined with reference to the diameter of the vacuum arc.

[0053] Step 4: Next, apply a three-phase AC current with a phase angle difference of 120 degrees to phases A4, B5, and C6 respectively. The magnitude of the current is the rated short-circuit current of the vacuum circuit breaker.

[0054] Step 5: Next, based on Maxwell's equations, the spatiotemporal distribution of the magnetic field of the vacuum circuit breaker is calculated using electromagnetic simulation software, including but not limited to Maxwell. The spatiotemporal distribution of the magnetic field in plane 8 between contacts 2 of phase A 4 is extracted. The extracted magnetic field is a two-dimensional vector B within plane 8. A1 (t); Extract the spatiotemporal distribution of the magnetic field in plane 7 between contacts 11 of phase B 5. The extracted magnetic field is a two-dimensional vector B in plane 7. B1 (t); Extract the spatiotemporal distribution of the magnetic field in plane 9 between contacts 12 of phase C 6. The extracted magnetic field is a two-dimensional vector B in plane 9. C1 (t);

[0055] Step 6: Based on the three-phase model, remove the upper and lower conductive rods 1 of phase A 4, while keeping other model parameters unchanged. This step is to eliminate the influence of the transverse magnetic field generated by the conductive rods.

[0056] Step 7: Next, apply the same AC current as in step 4 to phase A 4, while do not apply AC current to phase B 5 and phase C 6.

[0057] Step 8: Next, calculate the self-generated magnetic field distribution of phase A 4 of the vacuum circuit breaker, and extract the spatiotemporal distribution of the self-generated magnetic field in plane 8 between contacts 2 of phase A 4. The extracted magnetic field is a two-dimensional vector B in plane 8. A2 (t);

[0058] Step 9: Next, convert the magnetic field spatiotemporal distribution vector B obtained in Step 5 into... A1 (t) Subtract the spatiotemporal distribution vector B of the self-generated magnetic field obtained in step 8 A2 (t), to obtain the external transverse magnetic field between the contacts 2 of phase A 5 and the plane 8;

[0059] Step 10: Based on the three-phase model, remove the upper and lower conductive rods 13 of phase B 5, while keeping other model parameters unchanged;

[0060] Step 11: Next, apply the same AC current to phase B 5 as in step 4, while do not apply AC current to the other two phases, phase A 4 and phase C 6.

[0061] Step 12: Next, calculate the self-generated magnetic field distribution of phase B 5 of the vacuum circuit breaker, and extract the spatiotemporal distribution of the self-generated magnetic field in plane 7 between contacts 11 of phase B 5. The extracted magnetic field is a two-dimensional vector B in plane 7. B2 (t);

[0062] Step 13: Next, the magnetic field spatiotemporal distribution vector B obtained in Step 5 is... B1 (t) Subtract the spatiotemporal distribution vector B of the self-generated magnetic field obtained in step 12 B2(t), to obtain the external transverse magnetic field between the contacts 11 of phase B 5 and the plane 7;

[0063] Step 14: Based on the three-phase model, remove the upper and lower conductive rods 14 of phase C 6, while keeping other model parameters unchanged;

[0064] Step 15: Next, apply the same AC current as in step 4 to phase C 6, while no AC current is applied to the other two phases, phase A 4 and phase B 5.

[0065] Step 16: Next, calculate the self-generated magnetic field distribution of phase C 6 of the vacuum circuit breaker, and extract the spatiotemporal distribution of the self-generated magnetic field in plane 9 between contacts 12 of phase C 6. The extracted magnetic field is a two-dimensional vector B in plane 7. C2 (t);

[0066] Step 17: Next, the magnetic field spatiotemporal distribution vector B obtained in Step 5 is... C1 (t) Subtract the spatiotemporal distribution vector B of the self-generated magnetic field obtained in step 16 C2 (t), to obtain the external transverse magnetic field between the contacts 12 of phase C 6 and the plane 9.

[0067] like Figure 2 As shown, in another embodiment of this application, a phase-to-phase transverse magnetic field measurement system between vacuum circuit breaker contacts is provided. The system includes a model building module, an overall magnetic field spatiotemporal distribution calculation module, a self-generated magnetic field distribution calculation module, and an external transverse magnetic field calculation module.

[0068] The model building module is used to establish a three-phase model of a vacuum circuit breaker;

[0069] The overall magnetic field spatiotemporal distribution calculation module is used to calculate the magnetic field spatiotemporal distribution of each phase of the three-phase model and the plane between the contacts when current is applied;

[0070] The self-generated magnetic field distribution calculation module is used to remove the influence of the transverse magnetic field generated by the conductive rod and to calculate the self-generated magnetic field distribution of a single phase when current is applied only to each single phase.

[0071] The external transverse magnetic field calculation module is used to obtain the external transverse magnetic field of a phase by subtracting the self-generated magnetic field distribution of a single phase when current is applied only on each single phase from the spatiotemporal distribution of the magnetic field between each phase and the contact plane of the three-phase model when current is applied.

[0072] It should be noted that the system provided in the above embodiments is only an example of the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure can be divided into different functional modules to complete all or part of the functions described above. This system is applied to the phase-to-phase transverse magnetic field measurement method between the contacts of the vacuum circuit breaker in the above embodiments.

[0073] like Figure 3 As shown, in another embodiment of this application, a storage medium is also provided, storing a program that, when executed by a processor, implements the method for measuring the interphase transverse magnetic field between the contacts of a vacuum circuit breaker as described in the above embodiment, specifically:

[0074] Establish a three-phase model of a vacuum circuit breaker;

[0075] Calculate the spatiotemporal distribution of the magnetic field between each phase and the contact in the three-phase model when current is applied;

[0076] Remove the influence of the transverse magnetic field generated by the conductive rod, and calculate the distribution of the self-generated magnetic field of each phase when current is applied only to each phase;

[0077] The external transverse magnetic field of a phase is obtained by subtracting the self-generated magnetic field distribution of a single phase when current is applied only on each single phase from the spatiotemporal distribution of the magnetic field between each phase and the contact plane in the three-phase model when current is applied.

[0078] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0079] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker, characterized in that, Includes the following steps: Establish single-phase and three-phase models of vacuum circuit breakers; Calculate the spatiotemporal distribution of the magnetic field between each phase and the contact in the three-phase model when current is applied; Remove the influence of the transverse magnetic field generated by the conductive rod, and calculate the distribution of the self-generated magnetic field of each phase when current is applied only to each phase; The external transverse magnetic field of a phase is obtained by subtracting the self-generated magnetic field distribution of a single phase when current is applied only on each single phase from the spatiotemporal distribution of the magnetic field between each phase and the contact plane in the three-phase model when current is applied.

2. The method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker according to claim 1, characterized in that, The establishment of single-phase and three-phase models of the vacuum circuit breaker is specifically as follows: Based on the single-phase structure and connection lines of the vacuum circuit breaker, a single-phase model is established, including the conductive rod, contacts, and arc. The contact model is not simplified. Based on the three-phase position structure of the vacuum circuit breaker, a three-phase model is established, namely phase A, phase B and phase C. If it is in a fully enclosed combined electrical appliance, it also includes a metal casing. Each phase of the electric arc is set as a conductive column, the conductivity of which is set according to the conductivity of the vacuum arc, and the radius is determined according to the diameter of the vacuum arc.

3. The method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker according to claim 1, characterized in that, The calculation of the spatiotemporal distribution of the magnetic field between each phase of the three-phase model and the contact plane when the current is applied is specifically as follows: Three-phase AC currents with a phase angle difference of 120 degrees are applied to phases A, B, and C of the three-phase model, and their magnitudes are the rated short-circuit currents of the vacuum circuit breaker. The spatiotemporal distribution of the magnetic field of a vacuum circuit breaker is calculated by solving Maxwell's equations. The spatiotemporal distribution of the magnetic field in the plane between the contacts of phase A is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. A1 (t); Extract the spatiotemporal distribution of the magnetic field in the plane between the contacts of phase B. The extracted magnetic field is a two-dimensional vector B in the plane. B1 (t); Extract the spatiotemporal distribution of the magnetic field in the plane between the contacts of phase C. The extracted magnetic field is a two-dimensional vector B in the plane. C1 (t).

4. The method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker according to claim 1, characterized in that, The removal of the influence of the transverse magnetic field generated by the conductive rod specifically includes: Based on the three-phase model, the conductive rods at the top and bottom ends of the phase under test are removed, while other model parameters remain unchanged.

5. The method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker according to claim 1, characterized in that, The calculation only considers the distribution of the self-generated magnetic field of each single phase when a current is applied to each single phase, specifically: When applying and calculating the applied current, the same alternating current is applied to phase A, while no alternating current is applied to phases B and C. The self-generated magnetic field distribution of phase A of the vacuum circuit breaker is calculated, and the spatiotemporal distribution of the self-generated magnetic field in the plane between the contacts of phase A is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. A2 (t); When applying and calculating the applied current, the same alternating current is applied to phase B, while no alternating current is applied to phases A and C. The self-generated magnetic field distribution of phase B of the vacuum circuit breaker is calculated, and the spatiotemporal distribution of the self-generated magnetic field in the plane between the contacts of phase B is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. B2 (t); When applying and calculating the applied current, the same alternating current is applied to phase C, while no alternating current is applied to phases A and B. The self-generated magnetic field distribution of phase C of the vacuum circuit breaker is calculated, and the spatiotemporal distribution of the self-generated magnetic field in the plane between the contacts of phase C is extracted. The extracted magnetic field is a two-dimensional vector B in the plane. C2 (t).

6. The method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker according to claim 1, characterized in that, The external transverse magnetic field of a phase is obtained by subtracting the self-generated magnetic field distribution of a single phase when current is applied only to the single phase from the spatiotemporal distribution of the magnetic field between each phase and the contact plane in the three-phase model when current is applied. Specifically: The spatiotemporal distribution of the magnetic field between phase A and the contact plane in the three-phase model when current is applied (B) A1 (t) Subtract the self-generated magnetic field distribution when a single current is applied to phase A B A2 (t), to obtain the external transverse magnetic field between the contacts of phase A; The spatiotemporal distribution of the magnetic field between phase B and the contact plane in the three-phase model when current is applied. B1 (t) Subtract the self-generated magnetic field distribution when a single current is applied to phase B. B2 (t), to obtain the external transverse magnetic field between the contacts of phase B; The spatiotemporal distribution of the magnetic field between phase C and the contact plane in the three-phase model when current is applied (B) C1 (t) Subtract the self-generated magnetic field distribution when a single current is applied to phase C B C2 (t), to obtain the external transverse magnetic field between the contacts of the C phase.

7. A phase-to-phase transverse magnetic field measurement system between contacts of a vacuum circuit breaker, characterized in that, The method for measuring the interphase transverse magnetic field between contacts of a vacuum circuit breaker applied to any one of claims 1-6 includes a model building module, an overall magnetic field spatiotemporal distribution calculation module, a self-generated magnetic field distribution calculation module, and an external transverse magnetic field calculation module. The model building module is used to establish a three-phase model of a vacuum circuit breaker; The overall magnetic field spatiotemporal distribution calculation module is used to calculate the magnetic field spatiotemporal distribution of each phase of the three-phase model and the plane between the contacts when current is applied; The self-generated magnetic field distribution calculation module is used to remove the influence of the transverse magnetic field generated by the conductive rod and to calculate the self-generated magnetic field distribution of a single phase when current is applied only to each single phase. The external transverse magnetic field calculation module is used to obtain the external transverse magnetic field of a phase by subtracting the self-generated magnetic field distribution of a single phase when current is applied only on each single phase from the spatiotemporal distribution of the magnetic field between each phase and the contact plane of the three-phase model when current is applied.

8. A storage medium storing a program, characterized in that: When the program is executed by the processor, it implements the method for measuring the interphase transverse magnetic field between the contacts of a vacuum circuit breaker as described in any one of claims 1-6.

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