CN115412448B - Network equipment security assessment method, device and storage medium - Google Patents

Abstract

The present disclosure provides a network equipment security assessment method, device and storage medium, which relate to the field of communication technology and can assess the security of network equipment. The method includes: determining the power frequency magnetic field intensity generated by substation equipment at multiple preset locations; determining the relative position information of the installation location of network equipment and the substation equipment; based on the power frequency magnetic field intensity generated at multiple preset locations, and Relative position information is used to determine the power frequency magnetic field intensity at the installation location; the safety of the network equipment is evaluated based on the power frequency magnetic field intensity at the installation location and the power frequency magnetic field intensity safety threshold of the network equipment. This disclosure is a process for assessing network device security.

Description

Network equipment security assessment methods, devices and storage media

Technical field

The present disclosure relates to the field of communication technology, and in particular, to a network equipment security assessment method, device and storage medium.

Background technique

In related technologies, the power frequency magnetic field intensity safety threshold of network equipment is usually set within the range of 3.78ut. When the power frequency magnetic field intensity in the construction area of the network equipment is less than or equal to the safety threshold of the network equipment, the network equipment can operate normally and safely. Operation; when the strength of the power frequency magnetic field in the area where network equipment is built is greater than the safety threshold of the network equipment, the strong power frequency magnetic field will seriously interfere with the safe operation of the network equipment, and there is a risk of causing damage to the network equipment. Therefore, how to determine the power frequency magnetic field strength of network equipment and then evaluate the security of network equipment has become an urgent technical problem that needs to be solved.

Contents of the invention

The present disclosure provides a network equipment security assessment method, device and storage medium, which can assess the security of network equipment.

In order to achieve the above objectives, the present disclosure adopts the following technical solutions:

The first aspect provides a network equipment security assessment method, which method includes: determining the power frequency magnetic field intensity generated by substation equipment at multiple preset locations; determining the installation location of the network equipment and the relative position information of the substation equipment; based on multiple The power frequency magnetic field intensity generated at a preset position and the relative position information are used to determine the power frequency magnetic field intensity at the installation location; based on the power frequency magnetic field intensity at the installation location and the power frequency magnetic field intensity safety threshold of the network equipment, the network equipment is evaluated. safety.

Combined with the above first aspect, in a possible implementation, determining the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions includes: determining the current value of the substation equipment according to the parameter information of the substation equipment; the parameter information includes : Rated power, rated voltage and power factor angle; determine the power frequency magnetic field intensity generated by the substation equipment at multiple preset locations according to the current value of the substation equipment and the location information of the multiple preset locations.

Combined with the above first aspect, in a possible implementation manner, the parameter information of the substation equipment and the current value of the substation equipment satisfy the following formula:

Among them, i _ab is the current value of the substation equipment; P is the rated power of the substation equipment; U is the rated voltage of the equipment; is the power factor angle of the device.

Combined with the above first aspect, in one possible implementation, the power frequency magnetic field intensity generated by the substation equipment at the first position satisfies the following formula, and the first position is any position among multiple preset positions:

in, is the power frequency magnetic field intensity generated by the substation equipment at the first position; μ ₀ is the vacuum magnetic permeability; i _ab is the current value of the substation equipment; R is the distance between the first position and the substation equipment; θ _a is the The angle between a position and the first end point of the substation equipment; θ _b is the angle between the first position and the second end point of the substation equipment.

In a second aspect, a network equipment security assessment device is provided, including: a first determination unit, a second determination unit, a third determination unit, and an assessment unit; the first determination unit is used to determine multiple preset positions of substation equipment. The generated power frequency magnetic field intensity; the second determination unit is used to determine the relative position information of the installation position of the network equipment and the substation equipment; the third determination unit is used to determine the power frequency magnetic field intensity generated at multiple preset positions, and The relative position information is used to determine the power frequency magnetic field intensity at the installation location; the evaluation unit is used to evaluate the safety of the network equipment based on the power frequency magnetic field intensity at the installation location and the power frequency magnetic field intensity safety threshold of the network equipment.

In conjunction with the above second aspect, in a possible implementation, the first determination unit is specifically configured to: determine the current value of the substation equipment according to the parameter information of the substation equipment and the position information of the plurality of preset positions; the parameter The information includes: rated power, rated voltage and power factor angle; according to the current value of the substation equipment, the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions is determined.

Combined with the second aspect above, in a possible implementation, the parameter information of the substation equipment and the current value of the substation equipment satisfy the following formula:

Among them, i _ab is the current value of the substation equipment; P is the rated power of the substation equipment; U is the rated voltage of the equipment; is the power factor angle of the device.

Combined with the above second aspect, in a possible implementation, the power frequency magnetic field intensity generated by the substation equipment at the first position satisfies the following formula, and the first position is any position among multiple preset positions:

in, is the power frequency magnetic field intensity generated by the substation equipment at the first position; μ ₀ is the vacuum magnetic permeability; i _ab is the current value of the substation equipment; R is the distance between the first position and the substation equipment; θ _a is the The angle between a position and the first end point of the substation equipment; θ _b is the angle between the first position and the second end point of the substation equipment.

In a third aspect, the present disclosure provides a network equipment security assessment device. The network equipment security assessment device includes: a processor and a memory; wherein the memory is used to store computer execution instructions, and when the resource scheduling device is running, The processor executes the computer execution instructions stored in the memory, so that the resource scheduling device executes the resource scheduling method described in the first aspect and any possible implementation of the first aspect.

In a fourth aspect, the present disclosure provides a computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions in the computer-readable storage medium are executed by a processor of a network equipment security assessment device, the network equipment is caused to The security assessment device can perform the network equipment security assessment method as described in the first aspect and any possible implementation of the first aspect.

In a fifth aspect, the present disclosure provides a computer program product containing instructions, which when the computer program product is run on a network equipment security assessment device, causes the network equipment security assessment device to execute any one of the first aspect and the first aspect. The network device security assessment method described in Possible implementations.

In a sixth aspect, the present disclosure provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run computer programs or instructions to implement any one of the first aspect and the first aspect. The network device security assessment method described in Possible implementations.

Specifically, the chip provided in the embodiment of the present disclosure also includes a memory for storing computer programs or instructions.

In this disclosure, the name of the above-mentioned network equipment security assessment device does not limit the device or functional module itself. In actual implementation, these devices or functional modules may appear under other names. As long as the functions of each device or functional module are similar to the present disclosure, they fall within the scope of the claims of the present disclosure and its equivalent technology.

These and other aspects of the present disclosure will be more clearly understood in the following description.

The technical solutions provided by this disclosure at least bring the following beneficial effects:

In this solution, the network equipment safety assessment device first determines the power frequency magnetic field intensity generated by the substation equipment at multiple preset locations, and then determines the power frequency magnetic field intensity at the installation location based on the installation location of the network equipment. After that, the network equipment safety assessment device compares the power frequency magnetic field intensity at the installation location with the safety threshold to evaluate the safety of the network equipment when installed at that location. In this way, when installing network equipment in a substation, the network equipment safety assessment device can use this method to evaluate the installation location where the power frequency magnetic field intensity meets the safety requirements from the installation locations in the substation that meet the network equipment installation location conditions, thereby making the network equipment Install at an installation location where the power frequency magnetic field strength meets safety requirements.

Description of the drawings

Figure 1 is a schematic diagram of the hardware structure of a network equipment security assessment device provided by an embodiment of the present disclosure;

Figure 2 is a schematic flowchart of a network device security assessment method provided by an embodiment of the present disclosure;

Figure 3 is a schematic flow chart of yet another network device security assessment method provided by an embodiment of the present disclosure;

Figure 4 is a schematic diagram of a substation switching field area simulation model provided by an embodiment of the present disclosure;

Figure 5 is a schematic diagram of the magnetic field intensity generated by a substation equipment at any point in space according to an embodiment of the present disclosure;

Figure 6 is a schematic diagram of the power frequency magnetic field simulation results of a substation at a vertical distance of 20 meters provided by an embodiment of the present disclosure;

Figure 7 is a schematic flow chart of yet another network device security assessment method provided by an embodiment of the present disclosure;

Figure 8 is a schematic structural diagram of a network equipment security assessment device provided by an embodiment of the present disclosure.

Detailed ways

The network equipment security assessment method, device and storage medium provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations.

The terms "first", "second", etc. in the description of the present disclosure and the drawings are used to distinguish different objects, or to distinguish different processes on the same object, rather than to describe a specific order of objects.

Furthermore, references to the terms "including" and "having" and any variations thereof in the description of the present disclosure are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes other unlisted steps or units, or optionally also Includes other steps or units that are inherent to such processes, methods, products, or devices.

It should be noted that in the embodiments of the present disclosure, words such as “exemplary” or “for example” are used to represent examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "such as" in the present disclosure is not intended to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "such as" is intended to present the concept in a concrete manner.

Figure 1 is a schematic structural diagram of a network equipment security assessment device provided by an embodiment of the present disclosure. As shown in FIG. 1 , the network equipment security assessment device 100 includes at least one processor 101 , a communication line 102 , and at least one communication interface 104 , and may also include a memory 103 . Among them, the processor 101, the memory 103 and the communication interface 104 can be connected through a communication line 102.

The processor 101 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure. For example: one or more digital signal processors (DSP), or one or more field programmable gate arrays (FPGA).

Communication line 102 may include a path for communicating information between the components described above.

The communication interface 104 is used to communicate with other devices or communication networks, and can use any device such as a transceiver, such as Ethernet, wireless access network (radio access network, RAN), wireless local area networks (WLAN), etc. .

The memory 103 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or other type that can store information and instructions. The dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage ( Including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to include or store desired program code in the form of instructions or data structures and can be stored by a computer. any other medium, but not limited to this.

In one possible design, the memory 103 can exist independently of the processor 101, that is, the memory 103 can be a memory external to the processor 101. In this case, the memory 103 can be connected to the processor 101 through the communication line 102 for storing execution data. Instructions or application codes are controlled and executed by the processor 101 to implement the network device security assessment and determination method provided by the following embodiments of the present disclosure. In another possible design, the memory 103 can also be integrated with the processor 101, that is, the memory 103 can be an internal memory of the processor 101. For example, the memory 103 can be a cache, which can be used to temporarily store some data and instructions. Information etc.

As an implementation manner, the processor 101 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 1 . As another implementation manner, the network equipment security assessment apparatus 100 may include multiple processors, such as the processor 101 and the processor 107 in FIG. 1 . As yet another implementation manner, the network equipment security assessment apparatus 100 may also include an output device 105 and an input device 106.

Through the above description of the embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be allocated as needed. It is completed by different functional modules, that is, the internal structure of the network node is divided into different functional modules to complete all or part of the functions described above. For the specific working processes of the above-described systems, modules and network nodes, reference can be made to the corresponding processes in the foregoing method embodiments, which will not be described again here.

In related technologies, network equipment (such as 5G communication network equipment) is less affected by the electromagnetic environment due to its characteristic of using high frequency bands for communication. However, network equipment usually consists of a large number of electronic components, and a large amount of microelectronics technology is used to implement communication functions. This causes network equipment to be highly sensitive to interference from strong electromagnetic environments. When network equipment works in a strong electromagnetic environment, At this time, the performance of network equipment will be affected, and even the security of network equipment cannot be guaranteed.

When network equipment is installed in a substation, since a large number of devices in the high-voltage system of the substation have large currents, the high-voltage system of the substation forms a powerful source of interference, which will produce various steady states during normal operation or failure of the substation. Or transient interference, for example, when switching a high-current device, transient interference will be caused. In addition, when a short-circuit fault occurs in the substation equipment, the substation equipment will increase the nearby electromagnetic field and power frequency potential, which will also cause great interference to the normal operation of the network equipment.

The electromagnetic compatibility standards of currently designed network equipment are usually not well suited to the complex electromagnetic environment of substations. Therefore, when network equipment is installed in a substation, it may be subject to electromagnetic interference from the high-voltage system of the substation, which will seriously affect the network equipment. The safe operation of the network equipment may even be damaged, resulting in the inability of the communication system to operate safely and reliably. Therefore, how to evaluate the security of network equipment in a complex electromagnetic environment such as a substation has become an urgent technical problem to be solved.

The current electromagnetic environment of substations is generally a power-frequency electromagnetic field environment. Related technologies only use a combination of simulation and on-site instrument testing to study the impact of power-frequency electromagnetic fields on the ground on the human body. However, currently network equipment is usually built at an altitude of 20-30 meters, and the construction environment is generally in bustling business districts and office areas where there is no strong electromagnetic field interference. The electromagnetic environment in the substation is relatively complex and there are many types of internal equipment. Not only the voltage levels in the substation are different, but also the surrounding electromagnetic environment of different equipment varies greatly. However, the current research on the electromagnetic field calculation of network equipment installed in substation scenarios is still blank.

In order to solve the technical problems existing in the above related technologies, the present disclosure provides a network equipment security assessment method. The network equipment security assessment device first determines the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions, and then determines the intensity of the power frequency magnetic field generated by the substation equipment at multiple preset positions, and then determines the The installation position, determine the power frequency magnetic field strength at the installation position. After that, the network equipment safety assessment device compares the power frequency magnetic field intensity at the installation location with the safety threshold to evaluate the safety of the network equipment when installed at that location. In this way, when installing network equipment in a substation, the network equipment safety assessment device can use this method to evaluate the installation location where the power frequency magnetic field intensity meets the safety requirements from the installation locations in the substation that meet the network equipment installation location conditions, thereby making the network equipment Install at an installation location where the power frequency magnetic field strength meets safety requirements.

The network equipment security assessment method provided by the embodiment of the present disclosure can be applied to the network equipment security assessment device as shown in Figure 1. As shown in Figure 2, the network equipment security assessment method provided by the embodiment of the present disclosure can be implemented through the following steps 201 to Step 204 is implemented.

Step 201: The network equipment safety assessment device determines the intensity of the power frequency magnetic field generated by the substation equipment at multiple preset positions.

In one possible implementation, the network equipment safety assessment device obtains parameter information of the substation equipment, determines the current value passing through the current-carrying conductors of the substation equipment, and determines the current value of the substation equipment in advance based on the current value passing through the current-carrying conductors of the substation equipment. Set the power frequency magnetic field intensity generated at multiple preset positions within the range.

As an example, in order to facilitate an accurate comparative assessment with the power frequency magnetic field intensity safety threshold of network equipment, the network equipment safety assessment device analyzes and processes the obtained power frequency magnetic field intensity data and establishes a substation power frequency magnetic field database. After that, the network equipment safety assessment device determines the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions within the preset range based on the substation power frequency magnetic field database.

Specifically, the substation power frequency magnetic field database includes: the category of the substation, the type of substation equipment, the substation area where the substation equipment is located, and the power frequency magnetic field intensity of the substation equipment at each point within the preset range.

It should be noted that the network security assessment method (such as steps 201 to 204) provided in the embodiment of the present disclosure can be specifically executed by the network equipment security assessment device as shown in Figure 1, which will not be described in detail in the present disclosure.

Step 202: The network equipment security assessment device determines the relative position information of the installation location of the network equipment and the substation equipment.

Among them, the network device is within the above preset range.

In one possible implementation manner, the network equipment security assessment device determines the installation location of the network equipment by obtaining information such as antenna height and antenna downtilt angle from the specification parameter information of the network equipment. Among them, the specification parameter information of the network equipment includes: the manufacturer information, size, antenna height, antenna downtilt angle, antenna type, etc. of the network equipment. According to the installation location information of the network equipment, the relative location information of the network equipment in the substation equipment is determined.

An example, as shown in Table 1, is the specification parameter information of the network device.

Table 1. Specification parameter information of network equipment

Network equipment manufacturers Manufacturer A Network device size 44cm*45cm*41cm Network equipment antenna height 13 Network equipment antenna downtilt angle 6° Network device antenna types array antenna

It should be noted that the relative position information between the installation position of the network equipment and the substation equipment is mainly determined by the antenna height and antenna downtilt angle of the network equipment. The specific implementation method is not limited in this disclosure.

Step 203: The network equipment safety assessment device determines the power frequency magnetic field intensity at the installation location based on the power frequency magnetic field intensity generated at multiple preset locations and the relative position information.

In one possible implementation, the network equipment safety assessment device determines the power frequency magnetic field intensity of the substation equipment at the relative position based on the relative position information between the installation position of the network equipment and the substation equipment.

In one example, the network equipment safety assessment device extracts the power frequency magnetic field intensity value generated by the substation equipment at the relative position from the substation power frequency magnetic field database based on the relative position information between the installation position of the network equipment and the substation equipment.

Step 204: The network equipment security assessment device evaluates the security of the network equipment based on the power frequency magnetic field intensity at the installation location and the power frequency magnetic field intensity safety threshold of the network equipment.

In one possible implementation, the network equipment safety assessment device compares the obtained power frequency magnetic field intensity at the installation location of the network equipment relative to the substation equipment with the power frequency magnetic field intensity safety threshold of the network equipment, and evaluates the power frequency magnetic field intensity at the installation location. Whether the power frequency magnetic field strength meets the safe operation conditions of the network equipment.

In one example, the network equipment safety assessment device compares the extracted power frequency magnetic field intensity of the network equipment at the relative installation position of the substation equipment with the power frequency magnetic field intensity safety threshold of the network equipment. When the power frequency magnetic field strength at the relative installation position is less than or equal to the power frequency magnetic field strength safety threshold of the network equipment, it is evaluated that the power frequency magnetic field strength at the relative installation position meets the safe operation conditions of the network equipment; when the relative installation position is at The power frequency magnetic field intensity is greater than the safe operation threshold of the power frequency magnetic field intensity of the network equipment. It is estimated that the power frequency magnetic field intensity at the installation location does not meet the safe operation conditions of the network equipment.

A specific example is that the network device is a 5G communication device. The safety threshold of power frequency magnetic field intensity for 5G communication equipment is 3.78ut. When the power frequency magnetic field intensity at the installation location of the 5G communication equipment in the substation is less than the safety threshold of 3.78ut, the network equipment safety assessment device evaluates the location of the substation as a safe installation location for the 5G communication equipment. When the power frequency magnetic field intensity at the installation location of the 5G communication equipment in the substation is greater than the safety threshold of 3.78ut, the network equipment safety assessment device evaluates the location of the substation as an unsafe installation location for the 5G communication equipment.

The above solution at least brings the following beneficial effects.

The network equipment safety assessment device first determines the power frequency magnetic field intensity generated by the substation equipment at multiple preset locations, and then determines the power frequency magnetic field intensity at the installation location based on the installation location of the network equipment. After that, the network equipment safety assessment device compares the power frequency magnetic field intensity with the safety threshold according to the installation location to evaluate the safety of the network equipment when installed at that location. In this way, when installing network equipment in a substation, the network equipment safety assessment device can use this method to evaluate the installation location where the power frequency magnetic field intensity meets the safety requirements from the installation locations in the substation that meet the network equipment installation location conditions, thereby making the network The equipment is installed at an installation location where the power frequency magnetic field strength meets safety requirements.

With reference to Figure 2, as shown in Figure 3, the above step 201 can also be implemented through one or more of the following steps 301 to 302.

Step 301: The network equipment security assessment device determines the current value of the substation equipment based on the parameter information of the substation equipment.

Among them, the parameter information includes: rated power, rated voltage and power factor angle.

In one possible implementation, the current value of the substation equipment is mainly determined by the rated power, rated voltage and power factor angle of the substation equipment. Therefore, the network equipment safety assessment device can determine the size of the current flowing through the substation equipment based on the obtained rated power, rated voltage and power factor angle of the substation equipment.

As an example, the current value i _ab of the substation equipment satisfies the following formula 1

Among them, i _ab is the current value of the substation equipment; P is the rated power of the substation equipment; U is the rated voltage of the substation equipment; is the power factor angle of the substation.

Optionally, the current value of substation equipment will also be affected by factors such as substation site category, voltage level, number of main transformers, and main capacity.

In one example, the network equipment safety assessment device determines the substation category, voltage level, equipment type, number of main substation voltage units, main transformer capacity and other site information, and establishes a substation site information database based on the obtained site information.

Specifically, the categories of substations can be divided into: hub substations, terminal substations, step-up substations, step-down substations, etc.; voltage levels can be divided into: 550V, 220V, 110V and 35V; equipment types can be divided into transformer equipment and square equipment. , reactor equipment and daily office equipment; the number of main transformers and main transformer capacity are calculated based on the actual data of the site.

Furthermore, in order to more accurately simulate the power frequency magnetic field intensity within the network equipment construction area, the network equipment safety assessment device divides the substation into four construction areas according to the type of substation equipment. Among them, the four construction areas are: transformer area, switch plant area, reactor area and daily office area.

An example, as shown in Figure 4, is a schematic diagram of the simulation model of the substation switch plant area. When establishing the simulation model, in order to optimize internal details, the network equipment safety assessment device treats the busbars, incoming lines, outgoing lines and the wires connected between the equipment as cylindrical conductors. Among them, wires are good conductors.

It should be noted that this simulation model does not consider the impact of electrical equipment such as circuit breakers and lightning arresters in the substation on the electromagnetic field.

It is worth noting that different construction areas will have different effects on the current value of substation equipment. When establishing the power frequency magnetic field database of the substation, the network equipment safety assessment device will automatically set the influencing parameters that affect the current value of the equipment based on the actual construction environment of different construction areas. Among them, the actual construction environment is closely related to the substation type, voltage level and other site information where the construction area is located. During the data processing process, the current value of the substation equipment obtained in Formula 1 is automatically converted into the current value of the substation equipment when it is actually running. The current value is still represented by i _ab .

It should be noted that this disclosure does not limit the size of the influencing parameters.

Step 302: The network equipment safety assessment device determines the intensity of the power frequency magnetic field generated at multiple preset positions of the substation equipment based on the current value of the substation equipment.

In one possible implementation, the network equipment safety assessment device determines the power frequency magnetic field generated by the substation equipment at multiple preset positions within the preset range based on the actual operating current value of the substation equipment obtained in step 301. strength.

Exemplarily, the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions within the preset range satisfies the following formula 2

It should be noted, is the power frequency magnetic field intensity at any position of the substation equipment at multiple preset positions; μ ₀ is the vacuum magnetic permeability; i _ab is the current value of the substation equipment; R is any position at multiple preset positions and The distance between substation equipment; θ _a is the angle between any one of the multiple preset positions and the left end point of the substation equipment; θ _b is the angle between any one of the multiple preset positions and the right end point of the substation equipment. horn.

Specifically, the power frequency magnetic field intensity of the substation equipment at any one of multiple preset positions It can be deduced and calculated according to Biot-Savart's law. Combined with Figure 5, the following is the power frequency magnetic field intensity of the substation/> The derivation process of:

As shown in Figure 5, the magnetic field excited by the current element at point P at any position in space satisfies the following formula 3

Among them, I is the source current; dl is the line element of the source current; μ ₀ is the vacuum magnetic permeability, and its value is 4π×10 ^-7 H/m; is the distance from the current element to point P; θ is dl and/> angle.

Optionally, for any current-carrying wire segment of length l _AB in space, the coordinates of the starting point A are (x _a , y _a , z _a ), and the coordinates of the end point B are (x _b , y _b , z _b ), the line segment current is i _ab . Combined with Figure 5, it can be seen from Formula 3 that the magnetic induction intensity generated by the current-carrying conductor segment lAB at point P satisfies Formula 4

in, is the unit vector of line element dl pointing to point P; r is the distance from dl to point P.

The network security assessment device combines Formula 3 and Formula 4 and obtains the above Formula 2 after variable substitution.

It should be noted that the power frequency magnetic field intensity of the substation equipment at any one of multiple preset positions The direction satisfies the following formula 5 and formula 6

in, and/> are vectors between corresponding points respectively;/> are the unit vectors on x, y, and z respectively.

As an example, network equipment is usually installed 20-30 meters above the ground. When determining the intensity of the power frequency magnetic field generated by the substation equipment within a preset range, the network equipment safety assessment device simulates the temperature of the substation equipment. The magnetic field strength at the surface, and the power frequency magnetic field strength within 20-30 meters from the ground. Among them, the sky surface refers to the surface on the top of the substation equipment.

It should be noted that when simulating the power frequency magnetic field intensity of a substation, the network equipment security assessment device conducts accurate simulations in four construction areas divided according to the type of substation equipment. Among them, the four divided construction areas are: transformer area, switch plant area, reactor area and daily office area. Specifically, as shown in Table 2 below, they are the simulation results of the power frequency magnetic field intensity of the substation.

Table 2. Simulation results of power frequency magnetic field intensity in substation

For example, as shown in Figure 6, it is a schematic diagram of the power frequency magnetic field simulation results of a substation at a vertical distance of 20 meters.

It should be noted that, for better illustration, Table 1 only lists the power frequency magnetic field intensity within the preset range of 20 meters to 30 meters. Among them, the data in the table is within the range of 20 meters to 30 meters. Simulation results for every 1 meter interval. Further, the network equipment security assessment device classifies the substations according to categories according to the data in the substation site information database in step 301. Among them, the categories of substations include: hub substations, terminal substations, step-up substations, and step-down substations.

Optionally, the network equipment safety assessment device organizes and analyzes the obtained substation power frequency magnetic field intensity simulation results according to the category of the substation, and establishes a substation power frequency magnetic field database.

Above, the simulation process of the power frequency magnetic field intensity generated by the substation equipment within the preset range provided by the embodiment of the present disclosure has been described in detail.

Below, with reference to Figure 7, the overall process of evaluating the security of network equipment by the network equipment security assessment device is explained:

Step 701: The network equipment security assessment device determines the substation site information and establishes a substation site information database.

Among them, the site information of the substation includes: substation category, voltage level, equipment type, number of main substation voltage units, main transformer capacity, etc.

Step 702: The network equipment security assessment device divides the construction area according to the equipment type of the substation.

Among them, the equipment types of substations include: transformer equipment, open square equipment, reactor equipment and daily office equipment.

In one possible implementation, the network equipment security assessment device divides the substation area into: transformer area, switch plant area, reactor area and daily office area.

Step 703: The network equipment security assessment device determines the current value of the substation equipment based on the parameter information of the substation equipment.

The specific implementation of step 703 is similar to the above-mentioned step 301, and the specific implementation process can be referred to step 301, which will not be described again here.

Step 704: The network equipment safety assessment device determines the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions based on the current value of the substation equipment.

The specific implementation of step 704 is similar to the above-mentioned step 302, and the specific implementation process can be referred to step 302, which will not be described again here.

Step 705: The network equipment safety assessment device establishes a power frequency magnetic field database based on the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions within the preset range.

In one possible implementation, the network equipment safety assessment device performs data processing and analysis on the power frequency magnetic field intensity in step 704, and establishes a power frequency magnetic field database for the substation.

Step 706: The network equipment security assessment device determines the relative position information of the installation location of the network equipment and the substation equipment.

The specific implementation of step 706 is similar to the above-mentioned step 202, and the specific implementation process can refer to step 202, which will not be described again here.

Step 707: The network equipment safety assessment device determines the power frequency magnetic field intensity at the installation location based on the power frequency magnetic field intensity generated at multiple preset locations and the relative position information.

The specific implementation of step 707 is similar to the above-mentioned step 203, and the specific implementation process can be referred to step 203, which will not be described again here.

Step 708: The network equipment security assessment device evaluates the security of the network equipment based on the power frequency magnetic field intensity at the installation location and the power frequency magnetic field intensity safety threshold of the network equipment.

The specific implementation of step 708 is similar to the above-mentioned step 204, and the specific implementation process can be referred to step 204, which will not be described again here.

Step 709: The network equipment security assessment device outputs the assessment result.

In one possible implementation manner, after executing the above step 708, the network equipment security assessment device outputs the security assessment result on the electronic display screen.

In one example, the network equipment security assessment device outputs the assessment results on an electronic display screen. When the power frequency magnetic field intensity at the installation location of the network equipment is less than or equal to the safety threshold of the network equipment, the network equipment safety assessment device outputs on the electronic display: "The power frequency magnetic field intensity at the current location is within the safety threshold of the network equipment. "This position is a safe installation position", and this position is marked as a safe installation position in the power frequency magnetic field database; when the strength of the power frequency magnetic field at the installation position of the network equipment is greater than the safety threshold of the network equipment, the network equipment safety assessment device The display outputs: "The intensity of the power frequency magnetic field at the current location exceeds the safety threshold of the network equipment. This location is a dangerous installation location." The location is marked as a dangerous installation location in the power frequency magnetic field database.

Above, the network equipment security assessment device involved in the embodiment of the present disclosure, as well as the functions of each device of the network equipment security assessment device and the interaction between the devices have been described in detail.

It can be seen that the technical solutions provided by the embodiments of the present disclosure are mainly introduced from the perspective of methods. In order to realize the above functions, it includes hardware structures and/or software modules corresponding to each function. Persons skilled in the art should easily realize that, in conjunction with the modules and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered to be beyond the scope of this disclosure.

Embodiments of the present disclosure can divide the network equipment security assessment apparatus into functional modules according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software function modules. Optionally, the division of modules in the embodiment of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation.

Embodiments of the present disclosure can divide the network equipment security assessment apparatus into functional modules according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software function modules. Optionally, the division of modules in the embodiment of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation.

Embodiments of the present disclosure provide a network equipment security assessment device for performing the method required by any device in the above data integrity determination system. The network equipment security assessment device may be the network equipment security assessment device involved in this disclosure, or a module in the network equipment security assessment device; or a chip in the network equipment security assessment device, or other devices used to perform network equipment security The present disclosure does not limit the device for evaluating the determination method.

As shown in FIG. 8 , it is a schematic structural diagram of a network equipment security assessment apparatus provided by an embodiment of the present disclosure. The network equipment security assessment device includes: a first determination unit 801, a second determination unit 802, a third determination unit 803, an evaluation unit 804 and a communication unit 805.

The first determination unit 801 is used to determine the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions within the preset range;

The second determination unit 802 is used to determine the relative position information of the installation position of the network equipment and the substation equipment; the network equipment is within the preset range;

The third determination unit 803 is used to determine the power frequency magnetic field intensity of the installation location based on the power frequency magnetic field intensity generated at multiple preset positions and relative position information;

The evaluation unit 804 is used to evaluate the safety of the network equipment based on the power frequency magnetic field intensity at the installation location and the power frequency magnetic field intensity safety threshold of the network equipment.

Optionally, the first determination unit 801 is specifically used to: determine the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions within the preset range, including: determining the current of the substation equipment according to the parameter information of the substation equipment. value; parameter information includes: rated power, rated voltage and power factor angle; according to the current value of the substation equipment, determine the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions within the preset range.

Optionally, the first determination unit 801 is specifically used: the current value of the substation equipment satisfies the following formula:

Among them, i _ab is the current value of the substation equipment; P is the rated power of the substation equipment; U is the rated voltage of the equipment; is the power factor angle of the device.

Optionally, the first determination unit 801 is specifically configured to: the power frequency magnetic field intensity generated by the substation equipment at the first position satisfies the following formula, and the first position is any position among multiple preset positions:

Among them, the power frequency magnetic field intensity generated by the substation equipment at the first position; μ ₀ is the vacuum magnetic permeability; i _ab is the current value of the substation equipment; R is the distance between the first position and the substation equipment; θ _a is the The angle between the first position and the left end point of the substation equipment; θ _b is the angle between the first position and the right end point of the substation equipment.

Embodiments of the present disclosure provide a network equipment security assessment device for performing the method required by any device in the above data integrity determination system. The network equipment security assessment device may be the network equipment security assessment device involved in this disclosure, or a module in the network equipment security assessment device; or a chip in the network equipment security assessment device, or other devices used to perform network equipment security The present disclosure does not limit the device for evaluating the determination method.

Embodiments of the present disclosure also provide a computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When a computer executes the instructions, the computer executes each step in the method flow shown in the above method embodiment.

Embodiments of the present disclosure provide a computer program product containing instructions. When the instructions are run on a computer, they cause the computer to perform the network device security assessment method in the above method embodiment.

Embodiments of the present disclosure provide a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run computer programs or instructions to implement the network device security assessment method as in the above method embodiment.

The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard drive. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), register, hard disk, optical fiber, portable and compact Compact Disc Read-Only Memory (CD-ROM), optical storage device, magnetic storage device, or a suitable combination of the above, or any other form of computer-readable storage medium valued in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may be located in an Application Specific Integrated Circuit (ASIC). In embodiments of the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.

Since the devices, equipment, computer-readable storage media, and computer program products in the embodiments of the present disclosure can be applied to the above methods, the technical effects that can be obtained can also be referred to the above method embodiments. The embodiments of the present disclosure are here No longer.

The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present disclosure should be covered by the protection scope of the present disclosure. . Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims (6)

1. A network equipment security assessment method, characterized by including: Determine the power frequency magnetic field intensity generated by substation equipment at multiple preset locations; Determine the relative position information between the installation location of the network equipment and the substation equipment; Determine the power frequency magnetic field intensity of the installation position according to the power frequency magnetic field intensity generated at the multiple preset positions and the relative position information; Evaluate the safety of the network device according to the power frequency magnetic field intensity at the installation location and the power frequency magnetic field intensity safety threshold of the network device; Wherein, the determination of the power frequency magnetic field intensity generated by the substation equipment at multiple preset positions includes: Determine the current value of the substation equipment according to the parameter information of the substation equipment; the parameter information includes: rated power, rated voltage and power factor angle; Determine the power frequency magnetic field intensity generated by the substation equipment at the plurality of preset positions according to the current value of the substation equipment and the position information of the plurality of preset positions; The parameter information of the substation equipment and the current value of the substation equipment satisfy the following formula: Where, i _ab is the current value of the substation equipment; P is the rated power of the substation equipment; U is the rated voltage of the equipment; is the power factor angle of the device. 2. The method according to claim 1, characterized in that the power frequency magnetic field intensity generated by the substation equipment at a first position satisfies the following formula, and the first position is any of the plurality of preset positions. One position: in, is the power frequency magnetic field intensity generated by the substation equipment at the first position; μ ₀ is the vacuum magnetic permeability; i _ab is the current value of the substation equipment; R is the relationship between the first position and the The distance between the substation equipment; θ _a is the angle between the first position and the first end point of the substation equipment; θ _b is the angle between the first position and the second end point of the substation equipment. 3. A network equipment security assessment device, characterized in that it includes: a first determination unit, a second determination unit, a third determination unit, and an assessment unit; The first determination unit is used to determine the strength of the power frequency magnetic field generated by the substation equipment at multiple preset positions; The second determination unit is used to determine the relative position information between the installation position of the network equipment and the substation equipment; The third determination unit is configured to determine the power frequency magnetic field intensity of the installation position based on the power frequency magnetic field intensity generated at the plurality of preset positions and the relative position information; The evaluation unit is configured to evaluate the safety of the network device based on the power frequency magnetic field intensity of the installation location and the power frequency magnetic field intensity safety threshold of the network device; Wherein, the first determining unit is specifically used for: Determine the current value of the substation equipment according to the parameter information of the substation equipment and the position information of the plurality of preset positions; the parameter information includes: rated power, rated voltage and power factor angle; Determine the power frequency magnetic field intensity generated by the substation equipment at the plurality of preset positions according to the current value of the substation equipment; The parameter information of the substation equipment and the current value of the substation equipment satisfy the following formula: Where, i _ab is the current value of the substation equipment; P is the rated power of the substation equipment; U is the rated voltage of the equipment; is the power factor angle of the device. 4. The device according to claim 3, wherein the power frequency magnetic field intensity generated by the substation equipment at a first position satisfies the following formula, and the first position is any of the plurality of preset positions. One position: in, is the power frequency magnetic field intensity generated by the substation equipment at the first position; μ ₀ is the vacuum magnetic permeability; i _ab is the current value of the substation equipment; R is the relationship between the first position and the The distance between the substation equipment; θ _a is the angle between the first position and the first end point of the substation equipment; θ _b is the angle between the first position and the second end point of the substation equipment. 5. A network equipment security assessment device, characterized in that it includes: a processor and a communication interface; the communication interface is coupled to the processor, and the processor is used to run computer programs or instructions to implement the method of claim 1 -2 Network equipment security assessment methods described in any of the items. 6. A computer-readable storage medium with instructions stored in the computer-readable storage medium, characterized in that when the computer executes the instructions, the computer executes the network described in any one of claims 1-2. Equipment security assessment methods.