Monopole wire ion flow field altitude correction method, device and equipment

Abstract

The invention discloses a monopole wire ion flow field altitude correction method, device and equipment, and relates to the field of direct current transmission, and the method comprises the steps: obtaining the structure parameters and altitudes of a reference wire and a target wire; determining corona onset voltages at the two altitudes, and calculating synthetic electric field intensity of different corona discharge degree factors at the first altitude and nominal electric fields at the moment of corona onset at the two altitudes; according to the corona onset voltage at the second altitude and the applied voltage, determining a corona discharge degree factor at the second altitude; and according to the corona onset voltages at the two altitudes, the nominal electric field at the moment of corona onset at the two altitudes, the synthetic electric field intensity of different corona discharge degree factors at the first altitude and the corona discharge degree factor at the second altitude, determining the synthetic electric field intensity at the second altitude so as to correct the altitude of the ion flow field. The calculation efficiency of the synthetic electric field intensity at different altitudes is improved, and the method is suitable for all electrode structures of a monopole wire.

Description

Technical Field

[0001] The present application relates to the field of direct current power transmission, and in particular to a method, device and equipment for correcting the altitude of a monopolar conductor ion flow field based on a corona discharge degree factor. Background Art

[0002] Ultra-high voltage direct current transmission projects have long transmission distances, large capacity, and low losses. In recent years, they have accounted for an increasingly large proportion of power grid construction. In order to send energy from energy-sufficient areas, ultra-high voltage and ultra-high voltage direct current transmission projects inevitably have to pass through high-altitude areas during construction. When the DC line is in normal operation, there is a certain degree of corona discharge on the surface of the conductor. The charge generated by the discharge will generate ion flow in space and strengthen the ground electric field strength, forming an ion flow field problem. In order to protect the environment and ensure personal safety, the limited value of the ground synthetic electric field is required. With the increase of altitude, the relative air density decreases, the degree of corona discharge of the same transmission line under the same voltage intensifies, and the ion flow field problem becomes more serious. Therefore, it is necessary to study the influence of air pressure at different altitudes on the ion flow field characteristics of high-voltage direct current conductors, and provide a reference for the prediction of the ion flow field of direct current transmission lines in high-altitude areas.

[0003] There are two main methods for obtaining ion flow fields at different altitudes: simulation calculation and empirical formula.

[0004] There are finite element and flux line methods for simulation calculation. The calculation accuracy of flux line method is not high, and finite element method requires meshing, complicated procedures and long calculation time. Especially at different altitudes, it is necessary to change the ion mobility and the conductor corona initiation field strength according to the changes in the meteorological environment, which further increases the amount of calculation.

[0005] The empirical formula is only applicable to a certain conductor structure and cannot be used for conductors of other radii. It is also only applicable to a certain fixed voltage and cannot be applied to situations with different actual voltage levels. Summary of the invention

[0006] The purpose of the present application is to provide a method, device and equipment for correcting the altitude of the ion flow field of a monopolar conductor, which can improve the calculation efficiency of the synthetic electric field strength at different altitudes and can be applicable to all electrode structures of the monopolar conductor.

[0007] To achieve the above objectives, this application provides the following solutions:

[0008] In a first aspect, the present application provides a method for correcting the altitude of a monopolar wire ion flow field, comprising:

[0009] Acquire structural parameters of a reference conductor, structural parameters of a target conductor, a first altitude, and a second altitude; the first altitude is the altitude of the reference conductor; the second altitude is the altitude of the target conductor;

[0010] Determining a corona inception voltage at a first altitude and a corona inception voltage at a second altitude according to the structural parameters of the reference conductor, the structural parameters of the target conductor, the first altitude, and the second altitude;

[0011] According to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude and the voltage applied at the first altitude, the synthetic electric field intensity of different corona discharge degree factors at the first altitude, the nominal electric field at the time of corona inception at the first altitude and the nominal electric field at the time of corona inception at the second altitude are calculated;

[0012] determining a corona discharge degree factor at the second altitude according to the corona inception voltage at the second altitude and the voltage applied at the second altitude;

[0013] According to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude, the nominal electric field at the second altitude, the synthetic electric field strength of different corona discharge degree factors at the first altitude and the corona discharge degree factor at the second altitude, the synthetic electric field strength at the second altitude is determined to correct the altitude of the ion flow field.

[0014] In a second aspect, the present application provides a monopolar wire ion flow field altitude correction device, comprising:

[0015] A data acquisition module, used to acquire structural parameters of a reference conductor, structural parameters of a target conductor, a first altitude, and a second altitude; the first altitude is the altitude of the reference conductor; the second altitude is the altitude of the target conductor;

[0016] a corona inception voltage determination module, configured to determine a corona inception voltage at a first altitude and a corona inception voltage at a second altitude according to the structural parameters of the reference conductor, the structural parameters of the target conductor, the first altitude, and the second altitude;

[0017] A nominal electric field determination module is used to calculate the synthetic electric field intensity of different corona discharge degree factors at the first altitude, the nominal electric field at the first altitude when corona just starts, and the nominal electric field at the second altitude when corona just starts according to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, and the voltage applied at the first altitude;

[0018] A factor determination module, used to determine the corona discharge degree factor at the second altitude according to the corona inception voltage at the second altitude and the voltage applied at the second altitude;

[0019] The electric field strength determination module is used to determine the synthetic electric field strength at the second altitude based on the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude, the nominal electric field at the second altitude, the synthetic electric field strength of different corona discharge degree factors at the first altitude, and the corona discharge degree factor at the second altitude, so as to correct the altitude of the ion flow field.

[0020] In a third aspect, the present application provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-mentioned monopolar wire ion flow field altitude correction method.

[0021] According to the specific embodiments provided in this application, this application has the following technical effects:

[0022] The present application provides a method, device and equipment for correcting the altitude of the ion flow field of a monopolar conductor. Based on the corona discharge degree factor, by calculating the synthetic electric field strength of different corona discharge degree factors of the conductor at a certain altitude, the synthetic electric field strength of the same corona discharge degree factor at other altitudes can be calculated, thereby realizing the correction of the altitude of the ion flow field. In the whole process, the synthetic electric field strength only needs to be calculated once, which improves the calculation efficiency of the synthetic electric field strength at different altitudes, and is applicable to all electrode structures of the monopolar conductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is an application environment diagram of a method for correcting the altitude of a monopolar wire ion flow field in one embodiment of the present application;

[0025] Figure 2 A schematic flow chart of a method for correcting the altitude of a monopolar wire ion flow field provided in one embodiment of the present application;

[0026] Figure 3 is a curve diagram showing the relationship between the derivative of the electric field with respect to the voltage and the corona discharge factor in one embodiment of the present application;

[0027] Figure 4 A schematic diagram of the functional modules of a monopolar wire ion flow field altitude correction device provided in one embodiment of the present application;

[0028] Figure 5A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] The theoretical derivation of this application uses the Kaptzov hypothesis and the ion flow field control equation. And the corona discharge degree factor is proposed, and it is found that: under the same conductor structure parameters, under different temperatures, air pressures, and humidity (excluding suspended droplets) (i.e., at different altitudes), dE / dU as a function completely overlaps with the corona discharge degree factor curve at different altitudes, where E is the synthetic electric field intensity and U is the applied voltage. Therefore, using this property, the transformation relationship of the synthetic electric field intensity at different altitudes for the same corona discharge degree factor can be obtained. It has been verified by calculation that in actual engineering situations, the synthetic electric field of different conductor radii can also be obtained by this transformation.

[0031] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] The monopolar wire ion flow field altitude correction method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be set separately, or it can be integrated on the server 104, or it can be placed on the cloud or other servers. The terminal 102 can send the structural parameters of the baseline wire, the structural parameters of the target wire, the first altitude and the second altitude to the server 104, and the server 104 determines the synthetic electric field strength at the second altitude based on the received structural parameters of the baseline wire, the structural parameters of the target wire, the first altitude and the second altitude. The server 104 can feedback the synthetic electric field strength at the second altitude to the terminal 102. In addition, in some embodiments, the monopolar wire ion flow field altitude correction method can also be implemented by the server 104 or the terminal 102 alone.

[0033] The terminal 102 may be, but is not limited to, various desktop computers, laptop computers, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server 104 may be implemented as an independent server or a server cluster consisting of multiple servers, or may be a cloud server.

[0034] In an exemplary embodiment, Figure 2 As shown, a method for correcting the altitude of a monopolar wire ion flow field is provided. The method is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server 104 in the example is used for explanation, and the steps include the following steps 201 to 205.

[0035] Step 201, obtain the structural parameters of the reference wire, the structural parameters of the target wire, the first altitude and the second altitude. The first altitude is the altitude of the reference wire. The second altitude is the altitude of the target wire. The structural parameters include the height above the ground and the radius.

[0036] Step 202: determining a corona inception voltage at a first altitude and a corona inception voltage at a second altitude according to the structural parameters of the reference conductor, the structural parameters of the target conductor, the first altitude, and the second altitude.

[0037] Specifically, the corona inception voltage at the first altitude is determined according to the structural parameters of the reference conductor and the climatic factors at the first altitude. The corona inception voltage at the second altitude is determined according to the structural parameters of the target conductor and the climatic factors at the second altitude. The climatic factors include air pressure, temperature and humidity.

[0038] The relationship between structural parameters, air pressure, temperature, humidity and corona inception voltage can be obtained through experiments.

[0039] Step 203, calculating the synthetic electric field strength of different corona discharge degree factors at the first altitude, the nominal electric field at the first altitude when corona is just initiated, and the nominal electric field at the second altitude when corona is just initiated, according to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, and the voltage applied at the first altitude.

[0040] In an exemplary embodiment, the composite electric field strength of different corona discharge degree factors at the first altitude and the nominal electric field at the time of corona initiation at the first altitude are determined according to the corona initiation voltage at the first altitude and the voltage applied at the first altitude. The nominal electric field at the time of corona initiation at the second altitude is determined according to the corona initiation voltage at the second altitude.

[0041] Among them, conventional numerical simulation (such as finite element method, etc.) is used to determine the synthetic electric field strength at the first altitude. The control equation of the monopolar ion flow field in the numerical simulation is:

[0042]

[0043] in, is the space potential, ρ is the space charge density, J is the ion current density, K is the ion mobility, and ε0 is the vacuum dielectric constant.

[0044] In addition, experimental measurements can also be used to determine the synthetic electric field strength at the first altitude. Specifically, when determining the corona discharge degree factor, an electric field measuring instrument is placed at the location where the electric field needs to be measured. The measurement time is about 1 minute, and the measured readings are recorded. The average value of the readings during the measurement time is the required electric field. This application only needs to perform one measurement here, and the electric field strength at other altitudes can be quickly calculated later.

[0045] Step 204: determining a corona discharge degree factor at the second altitude according to the corona inception voltage at the second altitude and the voltage applied at the second altitude.

[0046] In an exemplary embodiment, the corona discharge degree factor is defined as:

[0047]

[0048] Among them, β is the corona discharge degree factor, U is the applied voltage, and U0 is the corona inception voltage.

[0049] The corona discharge degree factor at the second altitude is calculated using the following formula:

[0050]

[0051] Among them, β2 is the corona discharge degree factor at the second altitude, U 21 is the voltage applied at the second altitude, U 22 is the corona inception voltage at the second altitude.

[0052] Step 205, determining the synthetic electric field strength at the second altitude based on the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude, the nominal electric field at the second altitude, the synthetic electric field strength of different corona discharge degree factors at the first altitude, and the corona discharge degree factor at the second altitude, so as to correct the altitude of the ion flow field.

[0053] In an exemplary embodiment, the synthetic electric field strength of the target corona discharge degree factor at the first altitude is first determined. The target corona discharge degree is the corona discharge degree factor at the second altitude. Then, the synthetic electric field strength at the second altitude is determined based on the synthetic electric field strength of the target corona discharge degree factor at the first altitude, the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude when the corona is just initiated, and the nominal electric field at the second altitude when the corona is just initiated.

[0054] At different altitudes, the relationship curve between the derivative of the electric field intensity to the voltage and the corona discharge degree factor is calculated, such as Figure 3 As shown, the dE / dU~β curves completely overlap. The curve can be written as follows:

[0055] dE=U0f(β)d(β);

[0056] Among them, f is used to describe Figure 3 In the case of the first altitude H1 and the second altitude H2, the above formula is integrated from β = 0 to any value β1 to obtain:

[0057]

[0058] in, is the synthetic electric field intensity of the target corona discharge degree factor at the first altitude, is the composite electric field strength at the second altitude, is the nominal electric field at the first altitude when dizziness just occurs, is the nominal electric field at the second altitude when dizziness just occurs, is the corona inception voltage at the first altitude, is the corona inception voltage at the second altitude, S is the function of the corona discharge degree factor, which means the area between the f function and the horizontal axis, that is, Figure 3 The area of ​​the shaded part.

[0059] The corona discharge degree factor is the same under different gas pressures, so the relationship of the synthetic electric field strength can be obtained from the above formula:

[0060]

[0061] The synthetic electric field strength at the second altitude can be further obtained:

[0062]

[0063] In the present application, the correction of the altitude of the ion flow field at the same corona discharge degree factor is achieved through the synthetic electric field strength at the second altitude, that is, the correction of the synthetic electric field strength on the ground is achieved.

[0064] This application proposes a standard for measuring the degree of conductor discharge - the corona discharge degree factor. Based on the corona discharge degree factor, a set of calculated or measured data can be used to obtain the synthetic electric field strength of different voltages, conductor radii, temperatures, humidity, and air pressures at the same conductor height. This standard is applicable to all electrode structures of monopolar conductors, such as coaxial cylinders, wire plates, etc.

[0065] For simulation calculations, after obtaining a set of basic data, such as calculating the synthetic electric field strength under a certain conductor height above the ground, a certain air pressure, and different corona discharge degree factors, the synthetic electric field under other altitudes, different conductor radii, and different voltages can be obtained through the data without the need for further simulation calculations, which can greatly reduce the calculation time.

[0066] For the data obtained from the experiment. For example, in the absence of high-altitude experimental conditions, the experiment conducted at low altitude can obtain the synthetic electric field strength at high altitude through the method of this application. And the synthetic electric field strength at high altitude calculated by this application is compared with the experimental data at high altitude, and the error is within 3%, which proves the superiority of the calculation of this application.

[0067] In order to verify the effectiveness of this application, the ground electric field of 3mm conductor at 0m above sea level was taken as the benchmark, and the ground synthetic electric field at 1000m to 5000m above sea level at 65kV was calculated and compared with the experimental value, as shown in Table 1.

[0068] Table 1

[0069] Altitude (m) 1000 2000 3000 4000 5000 Experimental value (kV / m) 44.72 51.83 58.02 64.01 69.13 Calculated value 1(kV / m) 47.09 53.76 59.76 64.51 69.19 Relative deviation (%) 5.3 3.7 3.0 0.8 0.1 Calculated value 2 (kV / m) 45.62 53.58 61.25 67.67 74.30 Relative deviation (%) 2.0 3.4 5.6 5.7 7.5

[0070] Calculation value 1 in Table 1 is based on the calculation result at an altitude of 0m, and calculation value 2 is based on the calculation result at an altitude of 0m. It can be found that when the ground electric field calculation result at an altitude of 0m is used as a benchmark to predict the ground electric field at other altitudes, the relative error is less than 5.5%; when the ground field strength calculation result at an altitude of 0m is used as a benchmark to predict the ground electric field at other altitudes, the error will increase with the increase in altitude, but the relative error is less than 7.5%. This is because the rate of change of the ground electric field to the voltage decreases with the increase of the voltage (corona discharge degree factor), and data fitting was performed when there were not enough experimental data at low altitudes, so the higher the altitude, the greater the deviation. If more experimental tests with different corona discharge degrees are conducted at low altitudes, the error of the altitude correction calculation result will be reduced.

[0071] Further, taking the experimental results at an altitude of 5000m as a benchmark, the electric field strength at an altitude of 0m-4000m can be obtained based on the corona discharge degree factor, as shown in Table 2. It can be seen that the relative error between the predicted value and the experimental value of the ground electric field at different altitudes is less than 3%.

[0072] Table 2

[0073] Altitude (m) 0 1000 2000 3000 4000 Experimental value (kV / m) 35.42 44.72 51.83 58.02 64.01 Calculated value (kV / m) 34.40 43.98 51.47 58.71 64.76 Relative deviation (%) 2.9 1.7 0.7 1.2 1.2

[0074] In order to verify that the present application still has a good effect for different wire radii, the wire height is kept unchanged at 10m, and the wire with a diameter of 1mm is used as the benchmark to calculate the synthetic electric field strength, V / m, of four different corona discharge degree factors of wires with other radii. As shown in Table 3, it can be seen that as the wire radius increases, the error of predicting the ion flow field of a large wire radius with a small wire radius increases, but the maximum error does not exceed 3.5% (the largest wire diameter is 4cm, which is close to the actual ultra-high voltage transmission line, and is already 40 times the benchmark wire at this time). It can be seen that the present application still has a very good effect for different wire radii, and has a wide range of applications.

[0075] Table 3

[0076]

[0077] Based on the same inventive concept, the embodiment of the present application also provides a monopolar wire ion flow field altitude correction device for implementing the monopolar wire ion flow field altitude correction method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more monopolar wire ion flow field altitude correction device embodiments provided below can refer to the limitations of the monopolar wire ion flow field altitude correction method above, and will not be repeated here.

[0078] In an exemplary embodiment, Figure 4 As shown, a monopolar wire ion flow field altitude correction device is provided, including: a data acquisition module 401, a corona inception voltage determination module 402, a nominal electric field determination module 403, a factor determination module 404 and an electric field strength determination module 405.

[0079] The data acquisition module 401 is used to acquire the structural parameters of the reference wire, the structural parameters of the target wire, a first altitude and a second altitude. The first altitude is the altitude of the reference wire; the second altitude is the altitude of the target wire.

[0080] The corona inception voltage determination module 402 is used to determine the corona inception voltage at the first altitude and the corona inception voltage at the second altitude according to the structural parameters of the reference conductor, the structural parameters of the target conductor, the first altitude and the second altitude.

[0081] The nominal electric field determination module 403 is used to calculate the synthetic electric field strength of different corona discharge degree factors at the first altitude, the nominal electric field at the first altitude when corona just starts, and the nominal electric field at the second altitude when corona just starts according to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, and the voltage applied at the first altitude.

[0082] The factor determination module 404 is used to determine the corona discharge degree factor at the second altitude according to the corona inception voltage at the second altitude and the voltage applied at the second altitude.

[0083] The electric field strength determination module 405 is used to determine the synthetic electric field strength at the second altitude based on the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude when the corona inception is just started, the nominal electric field at the second altitude when the corona inception is just started, the synthetic electric field strength of different corona discharge degree factors at the first altitude, and the corona discharge degree factor at the second altitude, so as to correct the altitude of the ion flow field.

[0084] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 5 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the structural parameters of the reference wire, the structural parameters of the target wire, the first altitude and the second altitude. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for correcting the altitude of a monopolar wire ion flow field is implemented.

[0085] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0086] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0087] In this application, all actions to obtain signals, information or data are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0088] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0089] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0090] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for correcting the altitude of a monopolar wire ion flow field, characterized in that: The monopolar wire ion flow field altitude correction method comprises: Acquire structural parameters of a reference conductor, structural parameters of a target conductor, a first altitude, and a second altitude; the first altitude is the altitude of the reference conductor; the second altitude is the altitude of the target conductor; Determining a corona inception voltage at a first altitude and a corona inception voltage at a second altitude according to the structural parameters of the reference conductor, the structural parameters of the target conductor, the first altitude, and the second altitude; According to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude and the voltage applied at the first altitude, the synthetic electric field intensity of different corona discharge degree factors at the first altitude, the nominal electric field at the time of corona inception at the first altitude and the nominal electric field at the time of corona inception at the second altitude are calculated; determining a corona discharge degree factor at the second altitude according to the corona inception voltage at the second altitude and the voltage applied at the second altitude; According to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude, the nominal electric field at the second altitude, the synthetic electric field strength of different corona discharge degree factors at the first altitude and the corona discharge degree factor at the second altitude, the synthetic electric field strength at the second altitude is determined to correct the altitude of the ion flow field.

2. The method for correcting the altitude of the monopolar wire ion flow field according to claim 1, characterized in that: The structural parameters include height above the ground and radius.

3. The method for correcting the altitude of the monopolar wire ion flow field according to claim 1, characterized in that: Determining a corona inception voltage at the first altitude and a corona inception voltage at the second altitude according to the structural parameters of the reference conductor, the structural parameters of the target conductor, the first altitude, and the second altitude, specifically includes: Determining the corona inception voltage at the first altitude according to the structural parameters of the reference conductor and the climate factors at the first altitude; The corona inception voltage at the second altitude is determined according to the structural parameters of the target conductor and the climate factors at the second altitude.

4. The method for correcting the altitude of the monopolar wire ion flow field according to claim 1, characterized in that: The corona discharge severity factor at the second altitude is calculated using the following formula: Among them, β2 is the corona discharge degree factor at the second altitude, U 21 is the voltage applied at the second altitude, U 22 is the corona inception voltage at the second altitude.

5. The method for correcting the altitude of the monopolar wire ion flow field according to claim 1, characterized in that: According to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude and the voltage applied at the first altitude, the synthetic electric field intensity of different corona discharge degree factors at the first altitude, the nominal electric field at the time of corona inception at the first altitude and the nominal electric field at the time of corona inception at the second altitude are calculated, specifically including: According to the corona inception voltage at the first altitude and the voltage applied at the first altitude, the synthetic electric field intensity of different corona discharge degree factors at the first altitude and the nominal electric field at the time of corona inception at the first altitude are determined; The nominal electric field at the time of corona inception at the second altitude is determined according to the corona inception voltage at the second altitude.

6. The method for correcting the altitude of the monopolar wire ion flow field according to claim 1, characterized in that: According to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude, the nominal electric field at the second altitude, the synthetic electric field strength of different corona discharge degree factors at the first altitude and the corona discharge degree factor at the second altitude, the synthetic electric field strength at the second altitude is determined, specifically including: Determining a synthetic electric field strength of a target corona discharge degree factor at a first altitude; the target corona discharge degree is a corona discharge degree factor at a second altitude; The synthetic electric field strength at the second altitude is determined based on the synthetic electric field strength of the target corona discharge degree factor at the first altitude, the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the time of corona inception at the first altitude, and the nominal electric field at the time of corona inception at the second altitude.

7. The method for correcting the altitude of the monopolar wire ion flow field according to claim 6, characterized in that: The resultant electric field strength at the second altitude is determined using the following formula: in, is the composite electric field strength at the second altitude, is the synthetic electric field intensity of the target corona discharge degree factor at the first altitude, is the nominal electric field at the first altitude when dizziness just occurs, is the nominal electric field at the second altitude when dizziness just occurs, is the corona inception voltage at the first altitude, is the corona inception voltage at the second altitude.

8. A monopolar wire ion flow field altitude correction device, applied to the monopolar wire ion flow field altitude correction method according to any one of claims 1 to 7, characterized in that: The monopolar wire ion flow field altitude correction device comprises: A data acquisition module, used to acquire structural parameters of a reference conductor, structural parameters of a target conductor, a first altitude, and a second altitude; the first altitude is the altitude of the reference conductor; the second altitude is the altitude of the target conductor; a corona inception voltage determination module, configured to determine a corona inception voltage at a first altitude and a corona inception voltage at a second altitude according to the structural parameters of the reference conductor, the structural parameters of the target conductor, the first altitude, and the second altitude; A nominal electric field determination module is used to calculate the synthetic electric field intensity of different corona discharge degree factors at the first altitude, the nominal electric field at the first altitude when corona just starts, and the nominal electric field at the second altitude when corona just starts according to the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, and the voltage applied at the first altitude; A factor determination module, used to determine the corona discharge degree factor at the second altitude according to the corona inception voltage at the second altitude and the voltage applied at the second altitude; The electric field strength determination module is used to determine the synthetic electric field strength at the second altitude based on the corona inception voltage at the first altitude, the corona inception voltage at the second altitude, the nominal electric field at the first altitude, the nominal electric field at the second altitude, the synthetic electric field strength of different corona discharge degree factors at the first altitude, and the corona discharge degree factor at the second altitude, so as to correct the altitude of the ion flow field.

9. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the monopolar wire ion flow field altitude correction method according to any one of claims 1 to 7.

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