External interference measurement method and system of corona cage radio interference test system

Abstract

The invention discloses a corona cage radio interference test system external interference measurement method and system. The method comprises the following steps: determining field arrangement parameters of a corona cage test wire and a voltage divider; and connecting a non-shielding layer of the voltage divider with a high-voltage coupling loop through a metal wire, connecting the high-voltage coupling loop with radio interference measurement equipment through a shielding coaxial cable, and determining the radio interference on the basis of the field arrangement parameters and the parameters of the corona cage test wire model. Determining the electric field intensity Edf of a corona cage test wire in the high-voltage coupling loop at the non-screen part of the voltage divider and the radio interference Esf of a water pump in a test area at the non-screen part of the voltage divider through the radio interference measurement equipment; and determining an induced electric field Em of the radio interference measurement equipment based on the electric field intensity Edf and the radio interference Esf.

Description

Technical Field

[0001] The present invention relates to the technical field of radio interference measurement of power transmission and transformation projects, and more particularly to a method and system for measuring external interference of a corona cage radio interference test system. Background Art

[0002] When high-voltage transmission lines are energized, corona discharge occurs on the surface of the conductors and high-frequency currents flow on the conductors, generating radio noise that propagates into the surrounding space and couples into the receiving links of radars, direction-finding stations, and other radio stations near the lines, causing signal distortion and radar target loss, endangering national defense security and hindering the construction of ultra-high voltage projects.

[0003] To instantly detect whether a radio station's receiving link is experiencing radio interference from transmission lines, existing technology 1 employs a device that suppresses wireless signal interference, installed on the base station antenna, and employs a cavity-cut structure to reduce signal interference from the atmospheric waveguide layer. This primarily targets uplink interference in TDD networks and represents an improvement in hardware design. Existing technologies include the use of Newport's electromagnetic interference detection for communication harnesses, employing signal processing and data analysis algorithms to identify interference sources. Existing technology 2 may reduce the impact by analyzing interference sources within the harness, representing an innovation in detection methods. Existing technologies include coordinating interference between multiple radar networks, managing interference through measurement reports and coordinated transmission parameters, representing a dynamic coordination method that utilizes nodes to coordinate the operating parameters of multiple devices. Existing technologies also include the use of nickel-iron alloy protective shells to reduce electromagnetic interference, representing a physical shielding method. Improving anti-interference capabilities through neural network models and adding noise to the training set to enhance adaptability represent an algorithm optimization method.

[0004] In the corona cage test of the existing technology, in addition to high-voltage equipment, many auxiliary equipment are often used, such as water pumps used to simulate artificial rain. To simulate different rainfall amounts, the water pumps need to be adjusted frequently over a large range, and variable-frequency water pumps are more suitable. However, the variable-frequency water pumps contain switching devices, which generate radio noise during operation, interfering with the radio interference measurement of the corona cage test, especially when the conductor changes from no corona to corona onset, causing a significant impact on the corona onset judgment. The radio interference of the water pump comes from the transient process of the internal switching devices. Its frequency characteristics, bandwidth, and amplitude are affected by multiple factors such as load, temperature and humidity, structure, and cable layout, and cannot be simply subtracted. The corona cage radio interference test is the cornerstone of radio interference control for transmission lines. The reliability of its data depends on accurate interference identification and suppression of external interference. Summary of the Invention

[0005] The technical solution of the present invention provides a method and system for measuring external interference of a corona cage radio interference test system, so as to solve the problem of how to improve the accuracy of measuring the radio interference of corona discharge of transmission lines in a corona cage test.

[0006] In order to solve the above problems, the present invention provides a method for measuring external interference of a corona cage radio interference test system, the method comprising:

[0007] The first end of the corona cage test wire in the corona cage is suspended in the air, and the second end is connected to the high-voltage end of the high-voltage coupling circuit; the electromagnetic field generated by the water pump when it is working is transmitted through the air and input to the radio interference measurement equipment through the high-voltage coupling circuit; and the on-site layout parameters of the corona cage test wire and the voltage divider are determined;

[0008] Establish a corona cage test conductor model and determine the parameters of the corona cage test conductor model;

[0009] After connecting the unshielded portion of the voltage divider to the high-voltage coupling loop through a metal wire, and connecting the high-voltage coupling loop to a radio interference measurement device through a shielded coaxial cable, the electric field strength E of the corona cage test wire in the high-voltage coupling loop at the unshielded portion of the voltage divider is determined by the radio interference measurement device based on the field arrangement parameters and the parameters of the corona cage test wire model. df , the radio interference E of the water pump in the test area at the unshielded part of the voltage divider sf Based on the electric field strength E df and the radio interference E sf , determine the induced electric field E of the radio interference measuring device m .

[0010] Preferably, the electric field strength E df and the radio interference E sf Determine the induced electric field E of the radio interference measuring device m , the calculation formula for the induced electric field of radio interference measurement equipment is:

[0011] E m =f(E df +E sf )

[0012] Where f is the electric field strength received by the receiver, which is the electric field E generated by the corona current of the corona cage test wire. df and water pump radio interference E sf Composite function of .

[0013] Preferably, the method further comprises: based on the electric field strength E df 、The radio interference E sf And the real-time electric field strength value E of the radio interference measurement equipment r , determine the electric field Ev after eliminating the water pump interference:

[0014] Ev=Er -E m＝ Er-f(E df +E sf )

[0015] Among them, E r It is the real-time electric field strength value of the radio interference measurement equipment.

[0016] Preferably, the on-site layout parameters include:

[0017] The length l of the corona cage test wire, the equivalent height h of the corona cage test wire, the vertical projection distance l1 between the voltage divider and the center of the corona cage test wire, and the vertical projection distance l2 between the voltage divider and the water pump.

[0018] Preferably, the parameters of the corona cage test wire model include:

[0019] The antenna height is h and the antenna length is l.

[0020] According to another aspect of the present invention, the present invention provides an external interference measurement system for a corona cage radio interference test system, the system comprising:

[0021] The first modeling unit is configured to suspend a first end of a corona cage test wire in the corona cage and connect a second end to a high-voltage end of a high-voltage coupling circuit; the electromagnetic field generated by the water pump when in operation is transmitted through the air and then input to a radio interference measurement device via the high-voltage coupling circuit; and determine on-site layout parameters of the corona cage test wire and the voltage divider;

[0022] The second modeling unit is used to establish a corona cage test wire model and determine parameters of the corona cage test wire model;

[0023] a third modeling unit, configured to connect the unshielded portion of the voltage divider to a high-voltage coupling loop via a metal wire, and to connect the high-voltage coupling loop to a radio interference measuring device via a shielded coaxial cable;

[0024] The first determining unit is configured to determine the electric field strength E of the corona cage test wire in the high-voltage coupling loop at the unshielded portion of the voltage divider through the radio interference measuring device based on the on-site arrangement parameters and the parameters of the corona cage test wire model. df , the radio interference E of the water pump in the test area at the unshielded part of the voltage divider sf A second determining unit for determining the electric field strength E based on the df and the radio interference E sf Determine the induced electric field E of the radio interference measuring device m Preferably, the second determining unit is configured to: df and the radio interference Esf Determine the induced electric field E of the radio interference measuring device m , the calculation formula for the induced electric field of radio interference measurement equipment is:

[0025] E m =f(E df +E sf )

[0026] Among them, f is the electric field strength received by the receiver, which is the electric field strength E generated by the corona current of the corona cage test wire. df and water pump radio interference E sf Composite function of .

[0027] Preferably, the second determining unit is further configured to determine the electric field strength E based on the electric field strength E. df 、The radio interference E sf And the real-time electric field strength value E of the radio interference measurement equipment r , eliminating the electric field Ev of the water pump interference:

[0028] Ev=E r -E m＝ Er-f(E df +E sf )

[0029] Among them, E r It is the real-time electric field strength value of the radio interference measurement equipment.

[0030] Preferably, the on-site layout parameters include:

[0031] The length l of the corona cage test wire, the equivalent height h of the corona cage test wire, the vertical projection distance l1 between the voltage divider and the center of the corona cage test wire, and the vertical projection distance l2 between the voltage divider and the water pump.

[0032] Preferably, the parameters of the corona cage test wire model include:

[0033] The antenna height is h and the antenna length is l.

[0034] According to another aspect of the present invention, the present invention provides a computer-readable storage medium storing a computer program for executing an external interference measurement method for a corona cage radio interference test system.

[0035] According to another aspect of the present invention, the present invention provides an electronic device, comprising: a processor and a memory; wherein,

[0036] The memory is a memory for storing instructions executable by the processor;

[0037] The processor is configured to read the executable instructions from the memory and execute the instructions to implement an external interference measurement method for a corona cage radio interference test system.

[0038] The technical solution of the present invention provides a method and system for measuring external interference of a corona cage radio interference test system, wherein the method comprises: suspending a first end of a corona cage test wire in a corona cage and connecting a second end to a high-voltage end of a high-voltage coupling circuit; the electromagnetic field generated by a water pump when working is transmitted in the air and input to a radio interference measurement device via the high-voltage coupling circuit; determining on-site layout parameters of the corona cage test wire and a voltage divider; treating the corona cage test wire as an antenna, establishing a corona cage test wire model, and determining parameters of the corona cage test wire model; treating a connecting wire between the unshielded portion of the voltage divider and the high-voltage coupling circuit as a metal wire, and providing a shielded coaxial cable between the high-voltage coupling circuit and the radio interference measurement device; and determining, through radio interference measurement, the electric field strength E of the corona cage test wire at the unshielded portion of the voltage divider in the high-voltage coupling circuit based on the on-site layout parameters and the parameters of the corona cage test wire model. df , determine the radio interference E of the water pump in the test area at the unshielded position of the voltage divider sf Based on the electric field strength E df and the radio interference E sf Determine the induced electric field E of the radio interference measuring device m The technical solution of the present invention proposes a method and system for measuring background radio noise in a corona cage radio interference test system. By determining the on-site layout parameters and establishing a corona cage test conductor model, the accuracy of the corona discharge radio interference measurement of transmission conductors in the corona cage test can be effectively improved, thereby providing accurate data for the selection of transmission conductors, tower design, and environmental protection of power transmission and transformation projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] A more complete understanding of exemplary embodiments of the present invention may be obtained by referring to the following drawings:

[0040] Figure 1 Flowchart of a method for measuring external interference of a corona cage radio interference test system according to a preferred embodiment of the present invention;

[0041] Figure 2 A schematic diagram of the field arrangement of a corona cage radio interference test according to a preferred embodiment of the present invention;

[0042] Figure 3 A schematic diagram of a split conductor according to a preferred embodiment of the present invention;

[0043] Figure 4Schematic diagram of a transmission line antenna model according to a preferred embodiment of the present invention;

[0044] Figure 5 A schematic diagram of a high-voltage coupling loop according to a preferred embodiment of the present invention; and

[0045] Figure 6 1 is a structural diagram of an external interference measurement system of a corona cage radio interference test system according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0046] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a thorough and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments shown in the accompanying drawings is not intended to limit the present invention. In the accompanying drawings, identical elements are denoted by the same reference numerals.

[0047] Unless otherwise specified, the terms used herein (including technical terms) have the meanings commonly understood by those skilled in the art. In addition, it is understood that terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0048] Figure 1 The figure is a flow chart of an external interference measurement method of a corona cage radio interference test system according to a preferred embodiment of the present invention.

[0049] The present invention proposes a background radio interference test and elimination method for a corona cage radio interference test system, which effectively improves the accuracy of the measurement of radio interference caused by corona discharge of transmission conductors in corona cage tests, thereby providing accurate data for the selection of transmission conductors and the design of poles and towers. It can be applied to the design of power grid transmission lines and the environmental protection of power transmission and transformation projects.

[0050] like Figure 1 As shown, the present invention provides a method for measuring external interference of a corona cage radio interference test system, the method comprising:

[0051] Step 101: Suspending a first end of a corona cage test wire in a corona cage and connecting a second end to a high-voltage terminal of a high-voltage coupling circuit; the electromagnetic field generated by the water pump during operation is transmitted through the air and input to a radio interference measurement device via the high-voltage coupling circuit; and determining on-site layout parameters of the corona cage test wire and the voltage divider.

[0052] Preferably, the on-site arrangement parameters include:

[0053] The length of the corona cage test wire, l, the equivalent height of the corona cage test wire, h, the vertical projection distance between the voltage divider and the center of the corona cage test wire, l1, and the vertical projection distance between the voltage divider and the water pump, l2. The corona cage test wire with sag is equivalent to a height of h.

[0054] The present invention collects on-site layout parameters of the corona cage test system, including the wire length l, the wire center point height h, the vertical projection distance l1 between the voltage divider and the wire center, and the vertical projection distance l2 between the voltage divider and the water pump.

[0055] Step 102: establishing a corona cage test wire model and determining parameters of the corona cage test wire model;

[0056] Preferably, the parameters of the corona cage test wire model include:

[0057] The antenna height is h and the antenna length is l.

[0058] This invention establishes an antenna model for a corona cage test conductor. The classified conductor is equivalent to a wire antenna. The antenna height is h and the length is l. A current source is assumed at the center of the antenna. This current source is a high-frequency current source equivalent to corona discharge.

[0059] Step 103: Connect the unshielded portion of the voltage divider to the high-voltage coupling loop through a metal wire, and connect the high-voltage coupling loop to the radio interference measurement device through a shielded coaxial cable. Then, use the radio interference measurement device to determine the electric field strength E of the corona cage test wire in the high-voltage coupling loop at the unshielded portion of the voltage divider. df , the radio interference E of the water pump in the test area at the unshielded part of the voltage divider sf ;

[0060] The present invention establishes a radio interference coupling model for a voltage divider. The connecting wire between the voltage divider's end screen and the high-voltage coupling loop is equivalent to a metal wire, while the high-voltage coupling loop and the radio interference measurement device are connected via a shielded coaxial cable. The metal wire is connected to the inner core of the shielded coaxial cable.

[0061] Step 104: Based on the electric field strength E df and radio interference E sf , determine the induced electric field E of the radio interference measuring equipment m .

[0062] Preferably, based on the electric field strength E df and radio interference E sf ; Determine the induced electric field E of radio interference measuring equipment m , the calculation formula for the induced electric field of radio interference measurement equipment is:

[0063] E m =f(Edf +E sf )

[0064] Among them, f is the electric field strength received by the receiver, which is the electric field strength E generated by the corona current of the corona cage test wire. df and water pump radio interference E sf Composite function of .

[0065] Preferably, the method further comprises: based on the electric field strength E df 、Radio Interference E sf And the real-time electric field strength value E of the radio interference measurement equipment r , determine the electric field Ev after eliminating the water pump interference:

[0066] Ev=E r -E m＝ Er-f(E df +E sf )

[0067] Among them, E r It is the real-time electric field strength value of the radio interference measurement equipment.

[0068] The present invention establishes a model of the entire measurement system according to the above steps to solve the radio interference value received by the radio interference measurement device. First, the electric field strength E generated by the corona discharge of the corona cage test wire at the end screen of the voltage divider is solved. df , then solve the radio interference E generated by the water pump at the end screen of the voltage divider sf Finally, solve the induced electric field E measured by the measuring cable to the device end m =f(E df +E sf ).

[0069] The present invention can solve the above electric field values ​​to be solved according to commonly used field line coupling algorithms or electromagnetic field software.

[0070] The present invention obtains accurate measurement results. According to the measurement circuit of the measurement system, the electric field Ev=E can be obtained after eliminating the interference of the water pump. r -E m＝ Er-f(E df +E sf ). Where E r This is the reading of the radio interference measuring equipment.

[0071] In order to make the objectives, technical solutions and advantages of the present invention more clear, the following will be described through specific implementation methods in conjunction with the accompanying drawings.

[0072] The following is a detailed description of an embodiment of the present invention. This example is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiment.

[0073] (1) Corona cage test system Figure 2 As shown, the field layout parameters of the corona cage test system are collected, including the number of wire splits n, wire length l, and wire center height h. The vertical projection distance l1 between the voltage divider and the center of the wire, the vertical projection distance l2 between the voltage divider and the water pump, and the split wires are as follows: Figure 3 As shown, we obtain Figure 4 The information shown.

[0074] (2) Establish the antenna model of the corona cage test wire. Equivalently treat the classified wire as a wire antenna. The antenna height is h and the length is l. Assume that there is a current source at the center of the antenna. Figure 4 shown.

[0075] (3) Establish a radio interference coupling model for the voltage divider. The connection line between the voltage divider end screen and the high voltage coupling loop is equivalent to a metal wire, and the connection line between the high voltage coupling loop and the radio interference measurement equipment is a shielded coaxial cable. The metal wire is connected to the inner core of the shielded coaxial cable. Figure 5 shown.

[0076] According to (1), (2) and (3), the model of the entire measurement system is established to solve the radio interference value received by the radio interference measurement equipment. First, the electric field strength E generated by the corona discharge of the corona cage test wire at the end screen of the voltage divider is solved. df , then solve the radio interference E generated by the water pump at the end screen of the voltage divider sf Finally, solve the induced electric field E measured by the measuring cable to the device end m .

[0077] The electric field value E to be solved can be solved by the commonly used field line coupling algorithm or electromagnetic field software. m =f(E df +E sf ).

[0078] Obtain accurate measurement results. According to the measurement circuit of the measurement system, the electric field E can be obtained without the interference of the water pump. v =E r -f(E df +E sf ).

[0079] The present invention discloses a method for measuring background radio noise of a corona cage radio interference test system, and relates to the technical field of electromagnetic environment of power transmission and transformation projects. First, according to the on-site equipment layout diagram, the on-site layout parameters of the corona cage test system are collected, and an antenna model of the corona cage test conductor is established. The classification conductor is equivalent to a wire antenna and a radio interference coupling model of a voltage divider. Then, the connecting line between the end screen of the voltage divider and the high-voltage coupling loop is equivalent to a metal wire and a shielded coaxial cable. In this way, a model of the entire measurement system is obtained, the induced electric field at the device end of the measurement cable is solved, and finally the background radio interference noise is eliminated. The present invention proposes a method for measuring background radio noise of a corona cage radio interference test system, which can effectively improve the accuracy of the measurement of corona discharge radio interference of transmission conductors in corona cage tests, thereby providing accurate data for the selection of transmission conductors, pole tower design, and environmental protection of power transmission and transformation projects.

[0080] Figure 6 1 is a structural diagram of an external interference measurement system of a corona cage radio interference test system according to a preferred embodiment of the present invention.

[0081] like Figure 6 As shown, the present invention provides an external interference measurement system for a corona cage radio interference test system, the system comprising:

[0082] The first modeling unit 601 is configured to suspend a first end of a corona cage test wire in the corona cage and connect a second end to a high-voltage terminal of a high-voltage coupling circuit; the electromagnetic field generated by the water pump when in operation is transmitted through the air and then input to a radio interference measurement device via the high-voltage coupling circuit; and determine on-site layout parameters of the corona cage test wire and the voltage divider.

[0083] Preferably, the on-site arrangement parameters include:

[0084] The length l of the corona cage test wire, the equivalent height h of the corona cage test wire, the vertical projection distance l1 between the voltage divider and the center of the corona cage test wire, and the vertical projection distance l2 between the voltage divider and the water pump.

[0085] The second modeling unit 602 is used to establish a corona cage test wire model and determine parameters of the corona cage test wire model;

[0086] Preferably, the parameters of the corona cage test wire model include:

[0087] The antenna height is h and the antenna length is l.

[0088] The third modeling unit 603 is configured to connect the unshielded portion of the voltage divider to the high-voltage coupling loop via a metal wire, and to connect the high-voltage coupling loop to the radio interference measurement device via a shielded coaxial cable;

[0089] The first determining unit 604 is configured to determine the electric field strength E of the corona cage test wire at the unshielded portion of the voltage divider in the high-voltage coupling loop based on the on-site layout parameters and the parameters of the corona cage test wire model by using a radio interference measurement device. df , the radio interference E of the water pump in the test area at the unshielded part of the voltage divider sf The second determining unit 605 is configured to determine the electric field strength E based on the df and radio interference E sf ; Determine the induced electric field E of radio interference measuring equipment m .

[0090] Preferably, the second determining unit 605 is configured to determine the electric field strength E df and radio interference E sf ; Determine the induced electric field E of radio interference measuring equipment m , the calculation formula for the induced electric field of radio interference measurement equipment is:

[0091] E m =f(E df +E sf )

[0092] Where f is the electric field strength received by the receiver, which is the electric field E generated by the corona current of the corona cage test wire. df and water pump radio interference E sf Composite function of .

[0093] Preferably, the second determining unit 605 is further configured to determine the electric field strength E df 、Radio Interference E sf And the real-time electric field strength value E of the radio interference measurement equipment r , eliminating the electric field Ev of the water pump interference:

[0094] Ev=E r -E m＝ Er-f(E df +E sf )

[0095] Among them, E r It is the real-time electric field strength value of the radio interference measurement equipment.

[0096] The external interference measurement system of a corona cage radio interference test system in a preferred embodiment of the present invention corresponds to the external interference measurement method of a corona cage radio interference test system in a preferred embodiment of the present invention, and will not be described in detail here.

[0097] The present invention provides a computer-readable storage medium storing a computer program. The computer program is used to execute a method for measuring external interference of a corona cage radio interference test system.

[0098] The present invention provides an electronic device, which includes: a processor and a memory; wherein,

[0099] Memory for storing processor-executable instructions;

[0100] The processor is used for reading executable instructions from a memory and executing the instructions to implement an external interference measurement method for a corona cage radio interference test system.

[0101] It will be understood by those skilled in the art that the embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention may be implemented in various computer languages, for example, the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0102] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0103] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0105] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0106] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0107] The invention has been described above with reference to a few embodiments. However, it is readily apparent to a person skilled in the art that other embodiments than the ones disclosed above are equally within the scope of the invention, as defined by the appended patent claims.

[0108] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a / the [means, component, etc.]" are to be interpreted openly as referring to at least one instance of the means, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not necessarily need to be performed in the exact order disclosed, unless explicitly stated otherwise.

Claims

1. A method for measuring external interference of a corona cage radio interference test system, the method comprising: The first end of the corona cage test wire in the corona cage is suspended in the air, and the second end is connected to the high voltage end of the high voltage coupling circuit; The electromagnetic field generated when the water pump is working is transmitted in the air and input into the radio interference measuring equipment via the high-voltage coupling circuit; the on-site arrangement parameters of the corona cage test wire and the voltage divider are determined; Establish a corona cage test conductor model and determine the parameters of the corona cage test conductor model; After connecting the unshielded portion of the voltage divider to the high-voltage coupling loop through a metal wire, and connecting the high-voltage coupling loop to a radio interference measurement device through a shielded coaxial cable, the electric field strength E of the corona cage test wire in the high-voltage coupling loop at the unshielded portion of the voltage divider is determined by the radio interference measurement device based on the field arrangement parameters and the parameters of the corona cage test wire model. df , the radio interference E of the water pump in the test area at the unshielded part of the voltage divider sf ; Based on the electric field strength E df and the radio interference E sf , determine the induced electric field E of the radio interference measuring device m .

2. The method according to claim 1, wherein the electric field strength E df and the radio interference E sf Determine the induced electric field E of the radio interference measuring device m , the calculation formula for the induced electric field of radio interference measurement equipment is: AND m =f(E df +E sf ) in, f is a composite function.

3. The method according to claim 2, further comprising: Based on the electric field strength E df 、The radio interference E sf And the real-time electric field strength value E of the radio interference measurement equipment r , determine the electric field Ev after eliminating the water pump interference: Home=E r -TO m＝ Er-f(E df +E sf ) Among them, E r It is the real-time electric field strength value of the radio interference measurement equipment.

4. The method according to claim 1, wherein the on-site arrangement parameters include: The length l of the corona cage test wire, the equivalent height h of the corona cage test wire, the vertical projection distance l1 between the voltage divider and the center of the corona cage test wire, and the vertical projection distance l2 between the voltage divider and the water pump.

5. The method according to claim 1, wherein the parameters of the corona cage test wire model include: The antenna height is h and the antenna length is l.

6. An external interference measurement system for a corona cage radio interference test system, the system comprising: A first modeling unit is used to suspend a first end of a corona cage test wire in the corona cage in the air and connect a second end to a high voltage end of a high voltage coupling circuit; The electromagnetic field generated when the water pump is working is transmitted in the air and input into the radio interference measuring equipment via the high-voltage coupling circuit; the on-site arrangement parameters of the corona cage test wire and the voltage divider are determined; The second modeling unit is used to establish a corona cage test wire model and determine parameters of the corona cage test wire model; a third modeling unit, configured to connect the unshielded portion of the voltage divider to a high-voltage coupling loop via a metal wire, and to connect the high-voltage coupling loop to a radio interference measuring device via a shielded coaxial cable; The first determining unit is configured to determine the electric field strength E of the corona cage test wire in the high-voltage coupling loop at the unshielded portion of the voltage divider through the radio interference measuring device based on the on-site arrangement parameters and the parameters of the corona cage test wire model. df , the radio interference E of the water pump in the test area at the unshielded part of the voltage divider sf A second determining unit for determining the electric field strength E based on the df and the radio interference E sf ; Determine the induced electric field E of the radio interference measuring device m .

7. The system according to claim 6, wherein the second determining unit is configured to: df and the radio interference E sf Determine the induced electric field E of the radio interference measuring device m , the calculation formula for the induced electric field of radio interference measurement equipment is: AND m =f(E df +E sf ) in, f is a composite function.

8. The system according to claim 7, wherein the second determining unit is further configured to: df 、The radio interference E sf And the real-time electric field strength value E of the radio interference measurement equipment r , eliminating the electric field Ev of the water pump interference: Home=E r -TO m＝ Er-f(E df +E sf ) in, E r It is the real-time electric field strength value of the radio interference measurement equipment.

9. The system according to claim 6, wherein the on-site arrangement parameters include: The length l of the corona cage test wire, the equivalent height h of the corona cage test wire, the vertical projection distance l1 between the voltage divider and the center of the corona cage test wire, and the vertical projection distance l2 between the voltage divider and the water pump.

10. The system according to claim 6, wherein the parameters of the corona cage test wire model include: The antenna height is h and the antenna length is l.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 5.

12. An electronic device, characterized in that: The electronic device includes: a processor and a memory; wherein, The memory is a memory for storing instructions executable by the processor; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method according to any one of claims 1 to 5.

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