A high-voltage distribution box design and optimization method and system

Abstract

The present invention relates to the technical field of power distribution optimization, including a high-voltage distribution box design and optimization method and system, comprising the following steps: obtaining electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, detecting potential difference and calculating local field strength distribution, determining electric field gradient mutation points between the busbars, and screening electric field gradient mutation areas. In the present invention, by obtaining electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, calculating local field strength and identifying electric field gradient mutation areas, the potential distribution is made more balanced, based on electric field balance analysis, the busbar arrangement is optimized to maintain a reasonable distance between the high-voltage busbar and the low-voltage busbar, combined with the detection of the power supply path voltage gradient, the voltage distribution is made more uniform, according to the load end power demand fluctuation, the power supply path voltage change amplitude is calculated, the power supply path is dynamically adjusted, and the optimized power supply scheme reduces local overvoltage and undervoltage phenomena in the high-voltage distribution box, thereby improving the working reliability of the high-voltage distribution box.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy distribution optimization, and in particular to a high-voltage distribution box design and optimization method and system. Background Art

[0002] The technical field of power distribution optimization includes the rational allocation and management of electric energy among different loads, power supply equipment and network structures. The core content is to improve the utilization rate of electric energy and ensure the stability and safety of the power supply system through reasonable distribution strategies and control methods. Specifically, power distribution optimization involves aspects such as power network architecture design, voltage regulation, load balancing, energy scheduling and power factor adjustment. In modern power grids, in order to improve power supply reliability and reduce losses, power distribution optimization usually relies on intelligent scheduling systems, dynamic allocation strategies and adaptive control methods to optimize the allocation of power resources and ensure reasonable power supply between different areas and equipment. With the development of high-voltage transmission and distribution technology, it has gradually evolved towards more refined energy management and automation, enabling electric energy to be transmitted and used more efficiently in different application scenarios.

[0003] Among them, the design and optimization method of high-voltage distribution boxes refers to improvements to the structural design of high-voltage distribution equipment, optimization of power transmission paths, and layout of electrical components to improve the rationality of power distribution. It mainly covers the layout of high-voltage switchgear, optimization of busbar layout, and improvement of insulation protection structures. By analyzing the current distribution characteristics under different load conditions, the cable connection method is adjusted to reduce line losses. In response to the heat dissipation problem in the high-voltage distribution box, thermal conductive materials are used to optimize the heat dissipation channel and improve equipment stability. In terms of short-circuit protection, a reasonable segmented protection strategy is combined with the configuration of fast circuit breakers to improve safety in overload conditions. In addition, the box design is optimized based on electromagnetic interference shielding technology, and high-frequency interference is reduced by adjusting the grounding system and shielding layer structure to improve the operational reliability of the distribution equipment.

[0004] During the design and optimization of existing high-voltage distribution boxes, there is a lack of precise analysis of electric field distribution in busbar layout optimization, resulting in excessively high electric field strength in some areas and increasing the risk of insulation breakdown. The busbar spacing design does not fully consider the impact of potential differences, resulting in prominent electromagnetic interference issues and impacting the operational stability of low-voltage equipment. Power supply path selection primarily relies on fixed topology structures and lacks real-time detection and adjustment of voltage gradients, leading to large voltage fluctuations in some power supply paths and affecting the stability of power transmission. The load-side voltage regulation capability is insufficient and fails to effectively respond to power demand fluctuations. The power supply system lags behind in adjustment when the load changes, leading to local voltage anomalies and reduced power supply quality. The lack of a dynamic path optimization mechanism makes it impossible to quickly match the optimal power supply path under complex operating conditions, making the power supply system prone to power imbalances under high load or emergency situations, affecting the overall security of the power grid. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a design and optimization method for a high-voltage distribution box.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a high-voltage distribution box design and optimization method, comprising the following steps:

[0007] S1: Obtain electric field distribution data in the busbar arrangement area of ​​the high-voltage distribution box, detect the potential difference and calculate the local field strength distribution, determine the electric field gradient mutation points between the busbars, and screen the electric field gradient mutation areas;

[0008] S2: Based on the electric field gradient mutation area, analyze the potential difference between the high-voltage bus and the low-voltage bus, determine the electric field balance under the different arrangement modes, adjust the distance between the high-voltage bus and the low-voltage bus, and obtain an optimized bus arrangement scheme;

[0009] S3: According to the optimized busbar arrangement scheme, voltage data from each power supply node of the high-voltage distribution box to the load end is collected, the voltage gradient value of each power supply path is calculated, and the voltage gradient reference threshold is compared to obtain the voltage gradient abnormal path;

[0010] S4: Based on the abnormal voltage gradient path, compare the voltage gradient changes of all power supply paths of the high-voltage distribution box, select the power supply path with the smallest gradient change, extract the power supply node with the closest voltage gradient, and establish a power supply path with a matching voltage gradient;

[0011] S5: Based on the power supply path matching the voltage gradient, detect the power demand fluctuation at the load end of the high-voltage distribution box, calculate the voltage change amplitude of the power supply path, dynamically select the power supply path, and obtain the dynamically adjusted power supply path of the high-voltage distribution box.

[0012] As a further solution of the present invention, the electric field gradient mutation area includes the electric field gradient mutation point, the local field strength peak area, and the high potential difference bus gap; the optimized bus arrangement scheme includes the bus spacing adjustment parameters, the bus arrangement method, and the electric field balance index; the voltage gradient abnormal path includes the voltage gradient exceeding limit node, the abnormal power supply path, and the local voltage fluctuation area; the power supply path that matches the voltage gradient includes the voltage gradient closest to the power supply node, the low gradient change power supply line, and the stable voltage power supply path; the dynamically adjusted high-voltage distribution box power supply path includes the load power fluctuation compensation path, the voltage gradient balancing path, and the power supply path dynamic matching strategy.

[0013] As a further solution of the present invention, the specific steps of obtaining electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, detecting the potential difference and calculating the local field strength distribution, determining the electric field gradient mutation point between the busbars, and screening the electric field gradient mutation area are as follows:

[0014] S111: Obtain electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, detect the potential difference between each busbar, calculate the local field strength distribution value of each busbar, select data points where the potential difference between the busbars is greater than the set reference potential difference, and obtain the local field strength distribution value of the busbar;

[0015] S112: Based on the local field intensity distribution value of the busbar, the electric field gradient value between each busbar is calculated, the electric field gradient change rate is determined, and the busbar area with the electric field gradient value greater than the set gradient threshold is screened using the formula:

[0016] ;

[0017] Calculate the electric field gradient distribution value between busbars , compared with the gradient threshold, the abnormal electric field gradient area is obtained, where Representative The local field strength value at the location, Representative The local field strength value at the location, Representative The potential value of the position, Representative The potential value of the position, Represents the distance between adjacent busbars, represents the total number of data points;

[0018] S113: Screening electric field gradient mutation points according to the abnormal electric field gradient region, determining the busbar region according to the spatial position of the gradient mutation points, and obtaining the electric field gradient mutation region.

[0019] As a further solution of the present invention, based on the electric field gradient mutation area, the potential difference between the high-voltage bus and the low-voltage bus is analyzed, the electric field balance under the different arrangement mode is determined, and the spacing between the high-voltage bus and the low-voltage bus is adjusted. The specific steps for obtaining the optimized bus arrangement scheme are as follows:

[0020] S211: Based on the electric field gradient mutation area, calculate the potential difference between the high-voltage bus and the low-voltage bus, detect the adjacent spacing between the busbars, analyze the impact of the adjacent distance between the busbars on the local field strength, and obtain the potential difference distribution record between the busbars;

[0021] S212: Calculate the electric field balance under different busbar arrangements based on the potential difference distribution record between the buses, using the formula:

[0022] ;

[0023] Calculate the electric field balance index , screen the busbar arrangement scheme with the most balanced electric field strength and obtain the balanced busbar arrangement scheme, where Representative The local field strength value of the busbar, Represents the total number of buses, Representative The potential value of the position, represents the total number of potential data points;

[0024] S213: In combination with the balanced bus arrangement scheme, adjust the distance between the high-voltage bus and the low-voltage bus, recalculate the bus arrangement parameters, and obtain an optimized bus arrangement scheme.

[0025] As a further solution of the present invention, according to the optimized busbar arrangement scheme, the voltage data from each power supply node of the high-voltage distribution box to the load end is collected, the voltage gradient value of each power supply path is calculated, and the voltage gradient reference threshold is compared to obtain the voltage gradient abnormal path. The specific steps are as follows:

[0026] S311: Obtain the optimized busbar arrangement scheme, collect voltage data from each power supply node of the high-voltage distribution box to the load end, normalize the collected voltage data, calculate the voltage drop value of each power supply path, and obtain the voltage drop change value of each power supply path to obtain voltage drop change data;

[0027] S312: Based on the voltage drop change data, the voltage gradient value of each power supply path is calculated, and the path length is normalized using the formula:

[0028] ;

[0029] Calculating the power supply path Normalized voltage gradient value , and based on the topological relationship of the power supply path, it is mapped to the corresponding power supply path to obtain the voltage gradient mapping result, where, Representative Path The starting voltage value, Representative Path The end voltage value, Representative Path Power supply length, represents the normalized sum of voltage gradients of all paths, Represents the total number of power supply paths;

[0030] S313: Based on the voltage gradient mapping result, compare the voltage gradient reference threshold, filter abnormal paths, and record abnormal path numbers and corresponding voltage gradient mapping values ​​to obtain voltage gradient abnormal paths.

[0031] As a further solution of the present invention, based on the abnormal voltage gradient path, the voltage gradient changes of all power supply paths of the high-voltage distribution box are compared, the power supply path with the smallest gradient change is screened, the power supply node with the closest voltage gradient is extracted, and the specific steps of establishing a power supply path with a matching voltage gradient are as follows:

[0032] S411: Based on the abnormal voltage gradient path, calculating the voltage gradient change of all power supply paths, performing segmented difference calculation, and obtaining power supply path gradient change rate data by statistics;

[0033] S412: Based on the power supply path gradient change rate data, select the power supply path with the smallest gradient change rate, and calculate the voltage difference between the starting point and the end point of the path using the formula:

[0034] ;

[0035] Calculating the power supply path and power supply path Voltage gradient matching between , and perform path topology mapping to obtain the power supply path mapping result, where Represents the power supply path The starting voltage value, Represents the power supply path The starting voltage value, Represents the power supply path The end voltage value, Represents the power supply path To the power supply path The distance between represents the total length of the squares of all power supply paths, Represents the cumulative voltage difference of all power supply paths, Represents the total number of power supply paths;

[0036] S413: Based on the power supply path mapping result, extract the power supply node with the closest voltage gradient, and establish a power supply path matching the voltage gradient according to the power supply path topology.

[0037] As a further solution of the present invention, based on the power supply path matching the voltage gradient, detecting the power demand fluctuation at the load end of the high-voltage distribution box, calculating the voltage change amplitude of the power supply path, dynamically selecting the power supply path, and obtaining the dynamically adjusted high-voltage distribution box power supply path, the specific steps are as follows:

[0038] S511: Based on the power supply path matching the voltage gradient, detecting power demand fluctuations at the load end of the high-voltage distribution box, obtaining power demand data of the load end and its time variation sequence, calculating the power demand change rate of each load end, and obtaining the power demand change rate;

[0039] S512: Calculating a voltage change amplitude of the power supply path caused by the load change based on the power demand change rate, analyzing a voltage fluctuation trend of the power supply path based on the power demand change rate of each load end, electrical parameters of the power supply path, and power load distribution, and obtaining the voltage change amplitude of the power supply path;

[0040] S513: Call the voltage change amplitude of the power supply path to determine whether the power supply path still meets the voltage gradient balance standard. If not, reselect the power supply path and adjust the power supply path to obtain a dynamically adjusted high-voltage distribution box power supply path.

[0041] A high-voltage distribution box design and optimization system, comprising:

[0042] The electric field gradient detection module obtains the electric field distribution data of the busbar arrangement area, detects the busbar potential difference, calculates the local field strength, screens the busbar area where the electric field gradient exceeds the set gradient threshold, and generates the electric field gradient mutation area;

[0043] The busbar arrangement optimization module calculates the relative potential difference between the high and low voltage buses based on the electric field gradient mutation area, analyzes the local field strength at different adjacent distances, selects the busbar arrangement scheme with the most balanced electric field strength, adjusts the high-voltage busbar spacing, calculates the optimized electric field strength distribution, and generates the optimized busbar arrangement scheme;

[0044] The voltage gradient anomaly analysis module collects voltage data from the power supply node to the load end based on the optimized busbar arrangement scheme, calculates the voltage gradient value of the power supply path, compares it with the voltage gradient reference threshold, and screens and generates voltage gradient anomaly paths;

[0045] The power supply path matching module calculates the voltage gradient changes of all power supply paths based on the voltage gradient abnormal path, selects the path with the smallest gradient change, extracts the power supply node with the closest voltage gradient, and establishes a power supply path that matches the voltage gradient;

[0046] The load fluctuation adaptation module obtains the power demand fluctuation at the load end based on the power supply path that matches the voltage gradient, calculates the voltage fluctuation caused by the load change, and determines whether the power supply path meets the gradient balancing standard. If not, the power supply path is reselected to generate a dynamically adjusted high-voltage distribution box power supply path.

[0047] Compared with the prior art, the advantages and positive effects of the present invention are:

[0048] In the present invention, by obtaining the electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, calculating the local field strength and identifying the area of ​​electric field gradient mutation, the potential distribution is made more balanced, the high field strength area is reduced, and the busbar insulation performance is improved. Based on the electric field balance analysis, the busbar arrangement is optimized to maintain a reasonable distance between the high-voltage busbar and the low-voltage busbar, reduce the impact of electromagnetic interference, and improve the stability of the distribution system. Combined with the detection of the voltage gradient of the power supply path, the voltage changes of each power supply path are compared, and the path with the smallest gradient fluctuation is selected to make the voltage distribution more uniform and reduce the impact of abnormal voltage on the load-end equipment. According to the fluctuation of the power demand at the load end, the voltage change amplitude of the power supply path is calculated, and the power supply path is dynamically adjusted to maintain the voltage balance under different load conditions, thereby improving the adaptability of the power supply system. The optimized power supply scheme reduces local overvoltage and undervoltage phenomena in the high-voltage distribution box, makes the power distribution more efficient, reduces power supply loss, improves the working reliability of the high-voltage distribution box, and enhances the stable power supply capability under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a flow chart of the main steps of the present invention;

[0050] Figure 2 This is a flow chart of step S1 of the present invention;

[0051] Figure 3 This is a flow chart of step S2 of the present invention;

[0052] Figure 4 This is a flow chart of step S3 of the present invention;

[0053] Figure 5 This is a flow chart of step S4 of the present invention;

[0054] Figure 6 This is a flow chart of step S5 of the present invention. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0056] In the description of the present invention, it should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0057] See also Figure 1 , a high-voltage distribution box design and optimization method, comprising the following steps:

[0058] S1: Obtain the electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, detect the potential difference between each busbar, calculate the local field strength distribution, determine the electric field gradient mutation point between the busbars, and screen the busbar area where the electric field gradient exceeds the set gradient threshold to obtain the electric field gradient mutation area;

[0059] S2: Based on the area of ​​sudden change in electric field gradient, analyze the potential difference between the high-voltage busbar and the low-voltage busbar, analyze the impact of the distance between adjacent busbars on the local field strength, determine the electric field balance under different arrangements, select the busbar arrangement scheme with the most balanced electric field strength, adjust the distance between the high-voltage busbar and the low-voltage busbar, and obtain the optimized busbar arrangement scheme;

[0060] S3: Based on the optimized busbar arrangement plan, collect voltage data from each power supply node of the high-voltage distribution box to the load end, calculate the voltage gradient value of each power supply path, compare it with the voltage gradient reference threshold, and obtain the voltage gradient abnormal path;

[0061] S4: Based on the abnormal voltage gradient path, compare the voltage gradient changes of all power supply paths in the high-voltage distribution box, select the power supply path with the smallest gradient change, determine the voltage difference between the power supply nodes of the high-voltage distribution box, extract the power supply node with the closest voltage gradient, and establish a power supply path that matches the voltage gradient;

[0062] S5: Based on the power supply path that matches the voltage gradient, detect the power demand fluctuation at the load end of the high-voltage distribution box, calculate the voltage change amplitude of the power supply path caused by the load change, and determine whether the power supply path still meets the voltage gradient balance standard. If not, reselect the power supply path to obtain the dynamically adjusted high-voltage distribution box power supply path.

[0063] The electric field gradient mutation area includes the electric field gradient mutation point, the local field strength peak area, and the high potential difference bus gap. The optimized bus arrangement plan includes the bus spacing adjustment parameters, the bus arrangement method, and the electric field balance index. The voltage gradient abnormal path includes the voltage gradient exceeding limit node, the abnormal power supply path, and the local voltage fluctuation area. The power supply path that matches the voltage gradient includes the voltage gradient closest to the power supply node, the low gradient change power supply line, and the stable voltage power supply path. The dynamically adjusted high-voltage distribution box power supply path includes the load power fluctuation compensation path, the voltage gradient balancing path, and the power supply path dynamic matching strategy.

[0064] See also Figure 2 , S1 step is:

[0065] S111: Obtain electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, detect the potential difference between each busbar, calculate the local field strength distribution value of each busbar, select data points where the potential difference between the busbars is greater than the set reference potential difference, and obtain the local field strength distribution value of the busbar;

[0066] The electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box is collected through multiple monitoring points. Each monitoring point records the potential value, electric field strength and the distance between the busbars. The potential value is expressed in volts (V) and the electric field strength is expressed in volts per meter (V / m). To ensure the representativeness of the data, the sampling interval is set to 0.1 meters. At least 10 monitoring points are arranged in each area to detect the potential difference between the busbars and calculate the electric field strength distribution value between adjacent monitoring points. The electric field strength is expressed using the formula Calculate, where and are the potential values ​​of adjacent monitoring points, is the distance between two points. For example, in a certain busbar area, if the potentials of adjacent monitoring points are 3500V and 3600V respectively, and the distance between them is 0.5m, then the local field strength is V / m, filtering out data points where the potential difference between buses is greater than a set reference potential difference, set to 100V. This reference potential difference is based on the potential variation range under normal bus operation. After analyzing multiple sets of operational data, combined with potential stability and short-term voltage fluctuations, this value is set to encompass potential fluctuations under normal operation and effectively identify areas with abnormal potential differences. If the adjacent potential difference in a region exceeds 100V, it is marked as an abnormal potential region, ultimately resulting in the local field strength distribution value for the bus.

[0067] S112: Based on the local field intensity distribution value of the busbar, the electric field gradient value between each busbar is calculated, the electric field gradient change rate is determined, and the busbar area with the electric field gradient value greater than the set gradient threshold is screened using the formula:

[0068] ;

[0069] Calculate the electric field gradient distribution value between busbars , compared with the gradient threshold, the abnormal electric field gradient area is obtained, where Representative The local field strength value at the location, Representative The local field strength value at the location, Representative The potential value of the position, Representative The potential value of the position, Represents the distance between adjacent busbars, represents the total number of data points;

[0070] Based on the local field strength distribution value of the busbar, the electric field gradient value between each busbar is calculated. The electric field gradient represents the rate of change of the electric field with spatial position and is calculated using the formula.

[0071] The monitoring data of a certain area are as follows:

[0072] Table 1 Busbar local field strength and potential data

[0073] Monitoring point number Potential (V) Distance (m) Electric field strength (V / m) 1 3500 0.5 200 2 3600 0.5 220 3 3750 0.5 300

[0074] Enter the formula to calculate:

[0075] ;

[0076] ;

[0077] ;

[0078] ;

[0079] ;

[0080] Set the gradient threshold to The gradient threshold is set based on statistical analysis of the electric field gradient data for multiple busbar regions, analyzing the gradient distribution characteristics, and considering the range of electric field gradient variations in normally operating buses. Through data screening, a critical value is selected that effectively distinguishes abnormal gradient regions, ensuring that the gradient does not exceed this value under normal operation. At the same time, the gradient in abnormal regions is significantly higher than the set gradient threshold, forming an effective distinction standard. Since 393.8 > 350, this region is determined to be an abnormal electric field gradient region.

[0081] S113: screening electric field gradient mutation points according to the abnormal electric field gradient region, determining the busbar region according to the spatial position of the gradient mutation points, and obtaining the electric field gradient mutation region;

[0082] Call the abnormal electric field gradient area and screen the electric field gradient mutation point. The mutation point is determined by the gradient change exceeding the set threshold. For example, the electric field gradient change threshold is set to This threshold is set based on the stability assessment of the busbar electric field changes. By analyzing the gradient change data between adjacent monitoring points, the typical range of gradient changes under normal conditions is calculated. Combined with the boundary conditions of abnormal gradient changes, 50V / m is set as the judgment basis. If the gradient change between two adjacent points exceeds this value, it indicates that there may be a sudden change at that point, as shown in Table 2:

[0083] Table 2 Electric field gradient change data

[0084] Monitoring point number Gradient change (V / m) 1 20 2 80

[0085] Calculate the gradient change between adjacent monitoring points:

[0086] ;

[0087] ;

[0088] ;

[0089] Due to the maximum gradient change The threshold is exceeded, so the monitoring point numbered 2 is marked as a mutation point, and the electric field gradient mutation area is finally obtained.

[0090] See also Figure 3 , step S2 is:

[0091] S211: Based on the area of ​​sudden change in electric field gradient, calculate the potential difference between the high-voltage busbar and the low-voltage busbar, detect the adjacent spacing between each busbar, analyze the impact of the adjacent distance between buses on the local field strength, and obtain the distribution record of the potential difference between the buses;

[0092] Based on the electric field gradient mutation area, the potential difference between the high-voltage bus and the low-voltage bus is first measured. This potential difference is calculated from the difference between the high-voltage bus potential and the low-voltage bus potential. For example, in a typical 10kV high-voltage bus and 380V low-voltage bus system, the potential difference is calculated as , then measure the actual distance between adjacent busbars. Taking the data shown in Table 1 as an example, different busbar spacings have a significant impact on the local field strength. As shown in Table 1, a distance measuring sensor is used to measure the busbar spacing at multiple sampling points and calculate the average value. The distances between the high-voltage busbar and the low-voltage busbar are measured to be 0.3m, 0.5m, 0.7m, and 1.0m in four groups. The corresponding local field strength is calculated according to the formula Calculate the field strength, where is the potential difference, For busbar spacing, for example, when the busbar spacing When , the calculated local field strength is , when busbar spacing When , the calculated local field strength is ,It can be seen that the smaller the bus spacing is, the greater the local field strength is, and the final ,distribution record of the potential difference between the bus bars is obtained.

[0093] Table 3: Local field strength at different busbar spacings

[0094] Busbar spacing (m) 0.3 0.5 0.7 1.0 Local field strength (V / m) 32067 19240 13743 9620

[0095] As shown in Table 3, different busbar spacings have a direct impact on the local field strength. The field strength is greater when the spacing is smaller, and the field strength decreases when the spacing increases.

[0096] S212: Based on the potential difference distribution records between the busbars, calculate the electric field balance under different busbar arrangements using the formula:

[0097] ;

[0098] Calculate the electric field balance index , screen the busbar arrangement scheme with the most balanced electric field strength and obtain the balanced busbar arrangement scheme, where Representative The local field strength value of the busbar, Represents the total number of buses, Representative The potential value of the position, represents the total number of potential data points;

[0099] The potential difference distribution records between busbars are called to evaluate the electric field balance under different busbar arrangements. To calculate the electric field balance, the mean square error is used to calculate the dispersion of the local field strength of the busbars. When the local field strengths of the four busbars are 32067V / m, 19240V / m, 13743V / m, and 9620V / m, respectively, their mean square error is calculated:

[0100] ;

[0101] ;

[0102] ;

[0103] ;

[0104] Calculated , this value represents the electric field balance of the busbar arrangement, which can be used to screen different busbar arrangement schemes and finally obtain a balanced busbar arrangement scheme. This value represents the degree of discreteness of the local field strength data, that is, the fluctuation range of the local field strength of each busbar compared to the overall average value. The smaller the value, the more uniform the distribution of the electric field in the busbar system, the more stable the potential change between adjacent buses, and the less likely it is to form an electric field mutation point. The calculation results show that the electric field balance of the current busbar arrangement is low, and there are large field strength fluctuations in some busbar areas, which need to be reduced by adjusting the busbar spacing or optimizing the arrangement. value, making the overall electric field distribution of the system more balanced.

[0105] S213: Based on the balanced busbar arrangement plan, adjust the distance between the high-voltage busbar and the low-voltage busbar, recalculate the busbar arrangement parameters, and obtain the optimized busbar arrangement plan;

[0106] According to the balanced busbar arrangement scheme, the spacing between the high-voltage busbar and the low-voltage busbar is adjusted to reduce the gradient mutation of the local field strength. According to the data shown in Table 1, assuming that the optimization goal is to make the local field strength less than 15,000 V / m, a scheme with a spacing of not less than 0.7 m can be adopted. The optimized busbar arrangement scheme is measured as follows: when the spacing is adjusted to 0.7 m or above, the local field strength drops to 13,743 V / m or below, meeting the optimization goal. Therefore, the optimized busbar arrangement scheme is finally obtained.

[0107] See also Figure 4 , S3 steps are:

[0108] S311: Obtain an optimized busbar arrangement plan, collect voltage data from each power supply node of the high-voltage distribution box to the load end, normalize the collected voltage data, calculate the voltage drop value of each power supply path, and obtain the voltage drop change value of each power supply path to obtain voltage drop change data;

[0109] Based on the optimized busbar arrangement scheme, the voltage data from each power supply node of the high-voltage distribution box to the load end is collected. The power supply nodes of the high-voltage distribution box usually point to multiple key load ends, such as industrial equipment, data center server racks or large building power supply units. During the collection process, a voltage sensor needs to be installed on each power supply path to measure the voltage value in real time. Assuming that the power supply path of a certain high-voltage distribution box consists of three key nodes 1, 2, and 3, where 1 is the substation outlet, 2 is the distribution room input, and 3 is the terminal load point, the voltages of these three points are collected. Assuming that the measured voltage data are , , Since the collected data may be affected by sensor errors and line load fluctuations, the voltage data needs to be normalized to ensure that the voltage drop analysis under different load conditions is comparable. The normalization method uses minimum-maximum standardization, and the calculation formula is as follows:

[0110] ;

[0111] in, represents the voltage value to be normalized, and Represent the lowest and highest voltage values ​​during the measurement period. Assuming that in the past 24 hours, the minimum voltage of the power supply path is 9.3kV and the maximum voltage is 10.5kV, the normalized voltage of node 3 is calculated as:

[0112] ;

[0113] The normalized voltages at points A and B are calculated in the same way. The normalized voltage values ​​are used to further calculate the voltage drop in the power supply path. The voltage drop is calculated using the differential method, i.e.:

[0114] ;

[0115] ;

[0116] ;

[0117] According to the above calculations, the voltage drop change values ​​are 0.4kV, 0.3kV and 0.7kV respectively. These data will be used as input parameters for the subsequent voltage gradient calculation, and the voltage drop change data will eventually be obtained.

[0118] S312: Based on the voltage drop change data, the voltage gradient value of each power supply path is calculated, and the path length is normalized using the formula:

[0119] ;

[0120] Calculating the power supply path Normalized voltage gradient value , and based on the topological relationship of the power supply path, it is mapped to the corresponding power supply path to obtain the voltage gradient mapping result, where, Representative Path The starting voltage value, Representative Path The end voltage value, Representative Path Power supply length, represents the normalized sum of voltage gradients of all paths, Represents the total number of power supply paths;

[0121] The voltage gradient value of each power supply path is calculated based on the voltage drop change data. The calculation of the voltage gradient needs to take into account the length of the power supply path to ensure that the voltage gradients of paths of different lengths are comparable. Assuming that the 1→2 path is 200m long, the 2→3 path is 150m long, and the 1→3 path is 350m long, the voltage gradient of the power supply path is calculated as follows:

[0122] ;

[0123] ;

[0124] ;

[0125] Assuming that there are five paths in the entire power supply network, the normalized power supply path gradient values ​​are shown in Table 4:

[0126] path Voltage drop (kV) Path length (m) Normalized voltage gradient 1→2 0.4 200 0.002 2→3 0.3 150 0.002 1→3 0.7 350 0.002 4→5 0.5 250 0.002 5→6 0.6 300 0.002

[0127] As shown in Table 4, the normalized voltage gradients of each power supply path are the same. However, due to the different power supply loads of different paths, subsequent mapping needs to be performed in combination with the power supply topology relationship to obtain the voltage gradient mapping result.

[0128] S313: Based on the voltage gradient mapping result, compare the voltage gradient reference threshold, filter abnormal paths, and record the abnormal path numbers and corresponding voltage gradient mapping values ​​to obtain voltage gradient abnormal paths;

[0129] Based on the voltage gradient mapping results, the voltage gradient benchmark threshold is compared to screen out abnormal paths. The voltage gradient abnormality judgment standard is based on the industry power design specifications. The setting of this threshold mainly refers to the voltage drop limit allowed by the line, the conductivity of the cable material and the load variation range. In the distribution network design specifications, the voltage drop should be controlled within 5% of the rated voltage. Considering the common 10kV distribution system, its line length is usually between 500m and 2000m. The resistance characteristics of the conductor and the load power factor on the line will affect the voltage drop distribution. Assuming that the conductor resistance is , the load current is , the voltage drop on the line can be calculated as follows:

[0130] ;

[0131] in, is the line length, take 1000m, then:

[0132] ;

[0133] If the voltage gradient is the ratio of the voltage drop to the path length:

[0134] ;

[0135] Taking into account the influence of line materials, load power factors, and temperature of different distribution systems, a certain margin must be reserved on this basis. Combined with the voltage fluctuation range that may occur during peak load (such as a ±10% fluctuation range), the voltage gradient reference threshold is set to 0.0025kV / m, that is:

[0136] ;

[0137] This threshold reflects the maximum allowable range of voltage gradient under normal operation of the power supply system, and ensures that voltage stability can be maintained within the set range even when load fluctuates or line length is adjusted. , then the path is determined to be an abnormal path. Querying the data in Table 4, the voltage gradient of each path is 0.002kV / m, which does not exceed the threshold. Therefore, there is no abnormal path. If the voltage gradient calculation result of a power supply path is higher than 0.0025kV / m, for example, the voltage drop of path a→b is 1.5kV, and the path length is 500m, then its voltage gradient is calculated as:

[0138] ;

[0139] This value is greater than 0.0025 kV / m, so the path a→b is determined to be an abnormal path. Finally, the abnormal path number and the corresponding voltage gradient mapping value are screened out, and the voltage gradient abnormal path is finally obtained.

[0140] See also Figure 5 , step S4 is:

[0141] S411: Calculate the voltage gradient changes of all power supply paths based on the voltage gradient abnormal paths, perform segmented difference calculations, and obtain power supply path gradient change rate data statistically;

[0142] Based on the abnormal voltage gradient path, the voltage gradient of all power supply paths needs to be calculated to evaluate its change. First, the initial voltage value and terminal voltage value of each power supply path need to be extracted, and the voltage drop value between the initial voltage and the terminal voltage needs to be calculated. Assuming that the starting voltage of a power supply path is 10.5kV and the terminal voltage is 10.2kV, the voltage drop value of the path is 0.3kV. The voltage drop values ​​of multiple power supply paths are collected, and the voltage gradient value per unit length is calculated to analyze the gradient change rate of the power supply path. The differential calculation method is used to calculate the voltage gradient change rate of the power supply path over time based on data from two adjacent moments.

[0143] Assuming the time interval is 10 minutes, and the voltage gradient changes from 0.02 kV / m to 0.018 kV / m within 10 minutes, the gradient change rate is kV / m / min. This calculation can be extended to all power supply paths, and the calculation results are normalized to reduce the impact of different path lengths on gradient changes. The normalized reference value is set to the maximum value of the gradient change rate of all paths. Assuming the maximum gradient change rate is 0.005kV / m / min, the gradient change rate of a path after normalization is calculated as follows:

[0144] ;

[0145] The normalized gradient change rates of all paths are calculated and stored for subsequent screening to obtain the gradient change rates of the power supply paths.

[0146] S412: Based on the power supply path gradient change rate data, select the power supply path with the smallest gradient change rate, and calculate the voltage difference between the starting point and the end point of the path using the formula:

[0147] ;

[0148] Calculating the power supply path and power supply path Voltage gradient matching between , and perform path topology mapping to obtain the power supply path mapping result, where Represents the power supply path The starting voltage value, Represents the power supply path The starting voltage value, Represents the power supply path The end voltage value, Represents the power supply path To the power supply path The distance between represents the total length of the squares of all power supply paths, Represents the cumulative voltage difference of all power supply paths, Represents the total number of power supply paths;

[0149] Based on the gradient change rate of the power supply path, the power supply path with the smallest gradient change rate is screened out, and the voltage difference between the starting point and the terminal point of the path is calculated. During the calculation process, it is necessary to normalize the voltage value data of the path to match the voltage difference between different power supply paths.

[0150] Assume that the starting point voltage of path A is 10.5kV, the terminal point voltage is 10.2kV, and the path length is 500m. The total length of the square sum of all paths in the system is , the total voltage difference of all power supply paths is 1.5kV, then the calculation is as follows:

[0151] ;

[0152] ;

[0153] ;

[0154] This value represents the voltage gradient matching value of path A, and the power supply paths are sorted based on it, and the most matching power supply path is selected to obtain the power supply path mapping result.

[0155] S413: Based on the power supply path mapping result, extract the power supply node with the closest voltage gradient, and establish a power supply path matching the voltage gradient according to the power supply path topology;

[0156] Based on the power supply path mapping results, the power supply node with the closest voltage gradient is extracted. Then, according to the power supply path topology, a power supply path with a matching voltage gradient is established. To determine the power supply node with the closest gradient, the voltage gradient similarity of all power supply paths needs to be calculated. The mean square error is used to calculate the similarity of voltage gradients. Assuming that the voltage gradient value of power supply node A is 0.018 kV / m and the voltage gradient value of power supply node B is 0.019 kV / m, the similarity is calculated as follows:

[0157] ;

[0158] If the similarity is less than the set threshold, it is considered that the voltage gradients of the two power supply nodes are close, and a power supply path can be established. The similarity threshold is set to 0.000002 (the setting of the similarity threshold is based on the rated voltage fluctuation range of the power grid equipment and the statistical analysis of the actual monitoring data. Usually, the voltage deviation range allowed by the 10kV high-voltage distribution system is ±5%, that is, the normal fluctuation range of the voltage gradient of the power supply node can be calculated as (in (where is the power supply path length.) Based on calculations for typical power distribution paths (length 500m-1000m), this value is approximately between 0.000002 and 0.000005. Therefore, a lower limit of 0.000002 is selected as the threshold to ensure minimal voltage gradient differences between the screened power supply nodes, thereby preventing the impact of accumulated path selection errors on power supply stability. The calculated result, 0.0000005, is less than the threshold, so A and B can be connected, ultimately establishing a power supply path with a matching voltage gradient.

[0159] Table 5 Power supply path voltage data table

[0160] Power supply path Starting voltage (kV) Terminal voltage (kV) Power supply path length (m) Normalized gradient change rate First 10.5 10.2 500 -0.4 Second 10.4 10.0 600 -0.3 C 10.6 10.1 700 -0.2

[0161] As shown in Table 5, the voltage data of the power supply path is provided, and the normalized gradient change rate is calculated. The data is used for subsequent screening of the optimal power supply path.

[0162] See also Figure 6 , step S5 is:

[0163] S511: Based on the power supply path matching the voltage gradient, detect the power demand fluctuation of the load end of the high-voltage distribution box, obtain the power demand data of the load end and its time variation sequence, calculate the power demand change rate of each load end, and obtain the power demand change rate;

[0164] To design a power supply path based on voltage gradient matching, first determine the power supply system topology, including the connections between nodes and lines, and clarify the electrical parameters of each power supply path, such as line resistance and inductance. Assume that the power supply system uses a three-phase, four-wire system with a line voltage of 220V, a frequency of 50Hz, a resistive load on each phase, and a power factor of 1. Next, install power sensors to monitor the power demand changes at the load end of the high-voltage distribution box in real time, collecting power data and recording timestamps. Assume that at a certain moment, the load power on phase A is 100kW, the load power on phase B is 80kW, and the load power on phase C is 90kW. Then, obtain the load power demand data and its time series. The collected data is arranged in chronological order to form a power change time series, and the power change at each moment is calculated. For example, over the next 10 minutes, the load power on phase A increases to 110kW, the load power on phase B decreases to 75kW, and the load power on phase C remains unchanged at 90kW. Next, calculate the power demand change rate for each load using the formula: Power change rate = (current power - initial power) / initial power × 100%. The calculated power change rate for Phase A is (110kW - 100kW) / 100kW × 100% = 10%, the power change rate for Phase B is (75kW - 80kW) / 80kW × 100% = -6.25%, and the power change rate for Phase C is (90kW - 90kW) / 90kW × 100% = 0%. Finally, obtain the power demand change rate.

[0165] S512: Calculate the voltage variation of the power supply path caused by the load change based on the power demand change rate, analyze the voltage fluctuation trend of the power supply path based on the power demand change rate of each load end, the electrical parameters of the power supply path, and the power load distribution, and obtain the voltage variation of the power supply path;

[0166] According to the power demand change rate, calculate the voltage change amplitude of the power supply path caused by the load change. First, determine the electrical parameters of the power supply path, including the resistance and inductance of the line. Assume that the resistance of each phase line is 0.1Ω and the reactance is 0.05Ω. Next, according to the power demand change rate of each load end, calculate the corresponding current change. Use the current change = power change / line voltage for calculation. It is calculated that the current change of phase A is (110kW-100kW) / 220V=45.45A, the current change of phase B is (75kW-80kW) / 220V=-22.73A, and the current change of phase C is 0A. Then, calculate the voltage drop change caused by the current change. Use the voltage drop change = current change × line impedance, where line impedance = , the line impedance is calculated to be =0.112Ω, the voltage drop in phase A changes to 45.45A × 0.112Ω = 5.09V, the voltage drop in phase B changes to -22.73A × 0.112Ω = -2.55V, and the voltage drop in phase C changes to 0V. Next, analyze the voltage fluctuation trend of the power supply path and compare the voltage drop changes of each phase to determine the degree of voltage imbalance. Assume that the voltage imbalance threshold is set at 2%. This is based on the national standard GB / T15543-2008 "Three-Phase Voltage Unbalance for Power Quality," which stipulates that the voltage imbalance in general low-voltage distribution networks should not exceed 2%. Exceeding this range will cause additional losses in motors and power transformers, affecting the operational stability of the equipment. This threshold fluctuates with the current distribution and load characteristics of the system load. It is usually necessary to reassess and adjust it after the connection of high-power nonlinear loads. The threshold is 2% of the line voltage, which is calculated to be 220V × 2% = 4.4V. Finally, the voltage fluctuation amplitude of the power supply path is obtained.

[0167] S513: Calling the voltage change amplitude of the power supply path to determine whether the power supply path still meets the voltage gradient balance standard. If not, reselecting the power supply path and adjusting the power supply path to obtain a dynamically adjusted high-voltage distribution box power supply path;

[0168] Based on the voltage variation of the power supply path, the system determines whether the power supply path still meets the voltage gradient balance standard. First, the voltage variation of each phase is compared to determine whether it exceeds the preset voltage imbalance threshold. Assume that the voltage variation of phase A is 5.09V, phase B is -2.55V, and phase C is 0V. The voltage variation of phase A exceeds the threshold of 4.4V. Next, if it does not meet the requirements, the power supply path is reselected and the load distribution is adjusted to balance the loads of each phase. Assume that the 10kW load of phase A is transferred to phase C, reducing the power of phase A to 100kW and increasing the power of phase C to 100kW. The current variation and voltage drop of each phase are recalculated to ensure that the voltage variation of each phase is within the threshold range. Finally, the power supply path is adjusted to obtain the dynamically adjusted power supply path of the high-voltage distribution box.

[0169] A high-voltage distribution box design and optimization system, comprising:

[0170] The electric field gradient detection module obtains the electric field distribution data of the busbar arrangement area, detects the busbar potential difference, calculates the local field strength, screens the busbar area where the electric field gradient exceeds the set gradient threshold, and generates the electric field gradient mutation area;

[0171] The busbar arrangement optimization module calculates the relative potential difference between high-voltage and low-voltage buses based on the area of ​​electric field gradient mutation, analyzes the local field strength at different adjacent distances, selects the busbar arrangement scheme with the most balanced electric field strength, adjusts the high-voltage busbar spacing, calculates the optimized electric field strength distribution, and generates the optimized busbar arrangement scheme;

[0172] The voltage gradient anomaly analysis module collects voltage data from the power supply node to the load end based on the optimized busbar arrangement scheme, calculates the voltage gradient value of the power supply path, compares it with the voltage gradient reference threshold, and screens and generates voltage gradient anomaly paths;

[0173] The power supply path matching module calculates the voltage gradient changes of all power supply paths based on the voltage gradient abnormal paths, selects the path with the smallest gradient change, extracts the power supply node with the closest voltage gradient, and establishes a power supply path that matches the voltage gradient;

[0174] The load fluctuation adaptation module obtains the power demand fluctuation at the load end based on the power supply path that matches the voltage gradient, calculates the voltage fluctuation caused by the load change, and determines whether the power supply path meets the gradient balancing standard. If not, the power supply path is reselected to generate a dynamically adjusted high-voltage distribution box power supply path.

[0175] The above are merely preferred embodiments of the present invention and do not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high-voltage distribution box design and optimization method, characterized in that: The following steps are involved: S1: Obtain electric field distribution data in the busbar arrangement area of ​​the high-voltage distribution box, detect the potential difference and calculate the local field strength distribution, determine the electric field gradient mutation points between the busbars, and screen the electric field gradient mutation areas; S2: Based on the electric field gradient mutation area, analyze the potential difference between the high-voltage bus and the low-voltage bus, determine the electric field balance under the different arrangement modes, adjust the distance between the high-voltage bus and the low-voltage bus, and obtain an optimized bus arrangement scheme; The specific steps for obtaining the optimized busbar arrangement scheme are: S211: Based on the electric field gradient mutation area, calculate the potential difference between the high-voltage bus and the low-voltage bus, detect the adjacent spacing between the busbars, analyze the impact of the adjacent distance between the busbars on the local field strength, and obtain the potential difference distribution record between the busbars; S212: Calculate the electric field balance under different busbar arrangements based on the potential difference distribution record between the buses, using the formula: ； Calculate the electric field balance index , screen the busbar arrangement scheme with the most balanced electric field strength and obtain the balanced busbar arrangement scheme, where Representative The local field strength value of the busbar, Represents the total number of buses, Representative The potential value of the position, represents the total number of potential data points; S213: Based on the balanced bus arrangement scheme, adjust the distance between the high-voltage bus and the low-voltage bus, recalculate the bus arrangement parameters, and obtain an optimized bus arrangement scheme; S3: According to the optimized busbar arrangement scheme, voltage data from each power supply node of the high-voltage distribution box to the load end is collected, the voltage gradient value of each power supply path is calculated, and the voltage gradient reference threshold is compared to obtain the voltage gradient abnormal path; S4: Based on the abnormal voltage gradient path, compare the voltage gradient changes of all power supply paths of the high-voltage distribution box, select the power supply path with the smallest gradient change, extract the power supply node with the closest voltage gradient, and establish a power supply path with a matching voltage gradient; S5: Based on the power supply path matching the voltage gradient, detect the power demand fluctuation at the load end of the high-voltage distribution box, calculate the voltage change amplitude of the power supply path, dynamically select the power supply path, and obtain the dynamically adjusted power supply path of the high-voltage distribution box.

2. The high-voltage distribution box design and optimization method according to claim 1, characterized in that: The electric field gradient mutation area includes the electric field gradient mutation point, the local field strength peak area, and the high potential difference bus gap. The optimized bus arrangement scheme includes the bus spacing adjustment parameters, the bus arrangement method, and the electric field balance index. The voltage gradient abnormal path includes the voltage gradient exceeding limit node, the abnormal power supply path, and the local voltage fluctuation area. The power supply path that matches the voltage gradient includes the voltage gradient closest to the power supply node, the low gradient change power supply line, and the stable voltage power supply path. The dynamically adjusted high-voltage distribution box power supply path includes the load power fluctuation compensation path, the voltage gradient balancing path, and the power supply path dynamic matching strategy.

3. The high-voltage distribution box design and optimization method according to claim 1, characterized in that: The specific steps for obtaining electric field distribution data in the busbar arrangement area of ​​the high-voltage distribution box, detecting the potential difference and calculating the local field strength distribution, determining the electric field gradient mutation points between the busbars, and screening the electric field gradient mutation areas are as follows: S111: Obtain electric field distribution data of the busbar arrangement area of ​​the high-voltage distribution box, detect the potential difference between each busbar, calculate the local field strength distribution value of each busbar, select data points where the potential difference between the busbars is greater than the set reference potential difference, and obtain the local field strength distribution value of the busbar; S112: Based on the local field intensity distribution value of the busbar, the electric field gradient value between each busbar is calculated, the electric field gradient change rate is determined, and the busbar area with the electric field gradient value greater than the set gradient threshold is screened using the formula: ； Calculate the electric field gradient distribution value between busbars , compared with the gradient threshold, the abnormal electric field gradient area is obtained, where Representative The local field strength value at the location, Representative The local field strength value at the location, Representative The potential value of the position, Representative The potential value of the position, Represents the distance between adjacent busbars, represents the total number of data points; S113: Screening electric field gradient mutation points according to the abnormal electric field gradient region, determining the busbar region according to the spatial position of the gradient mutation points, and obtaining the electric field gradient mutation region.

4. The high-voltage distribution box design and optimization method according to claim 1, characterized in that: According to the optimized busbar arrangement scheme, the voltage data from each power supply node of the high-voltage distribution box to the load end is collected, the voltage gradient value of each power supply path is calculated, and the voltage gradient reference threshold is compared to obtain the voltage gradient abnormal path. The specific steps are as follows: S311: Obtain the optimized busbar arrangement scheme, collect voltage data from each power supply node of the high-voltage distribution box to the load end, normalize the collected voltage data, calculate the voltage drop value of each power supply path, and obtain the voltage drop change value of each power supply path to obtain voltage drop change data; S312: Based on the voltage drop change data, the voltage gradient value of each power supply path is calculated, and the path length is normalized using the formula: ； Calculating the power supply path Normalized voltage gradient value , and based on the topological relationship of the power supply path, it is mapped to the corresponding power supply path to obtain the voltage gradient mapping result, where, Representative Path The starting voltage value, Representative Path The end voltage value, Representative Path Power supply length, represents the normalized sum of voltage gradients of all paths, Represents the total number of power supply paths; S313: Based on the voltage gradient mapping result, compare the voltage gradient reference threshold, filter abnormal paths, and record abnormal path numbers and corresponding voltage gradient mapping values ​​to obtain voltage gradient abnormal paths.

5. The high-voltage distribution box design and optimization method according to claim 1, characterized in that: Based on the abnormal voltage gradient path, the voltage gradient changes of all power supply paths of the high-voltage distribution box are compared, the power supply path with the smallest gradient change is screened, the power supply node with the closest voltage gradient is extracted, and the specific steps of establishing a power supply path that matches the voltage gradient are as follows: S411: Based on the abnormal voltage gradient path, calculating the voltage gradient change of all power supply paths, performing segmented difference calculation, and obtaining power supply path gradient change rate data by statistics; S412: Based on the power supply path gradient change rate data, select the power supply path with the smallest gradient change rate, and calculate the voltage difference between the starting point and the end point of the path using the formula: ； Calculating the power supply path and power supply path Voltage gradient matching between , and perform path topology mapping to obtain the power supply path mapping result, where Represents the power supply path The starting voltage value, Represents the power supply path The starting voltage value, Represents the power supply path The end voltage value, Represents the power supply path To the power supply path The distance between represents the total length of the squares of all power supply paths, Represents the cumulative voltage difference of all power supply paths, Represents the total number of power supply paths; S413: Based on the power supply path mapping result, extract the power supply node with the closest voltage gradient, and establish a power supply path matching the voltage gradient according to the power supply path topology.

6. The high-voltage distribution box design and optimization method according to claim 1, characterized in that: Based on the power supply path matching the voltage gradient, detecting the power demand fluctuation at the load end of the high-voltage distribution box, calculating the voltage variation amplitude of the power supply path, dynamically selecting the power supply path, and obtaining the dynamically adjusted power supply path of the high-voltage distribution box are the specific steps as follows: S511: Based on the power supply path matching the voltage gradient, detecting power demand fluctuations at the load end of the high-voltage distribution box, obtaining power demand data of the load end and its time variation sequence, calculating the power demand change rate of each load end, and obtaining the power demand change rate; S512: Calculating a voltage change amplitude of the power supply path caused by the load change based on the power demand change rate, analyzing a voltage fluctuation trend of the power supply path based on the power demand change rate of each load end, electrical parameters of the power supply path, and power load distribution, and obtaining the voltage change amplitude of the power supply path; S513: Call the voltage change amplitude of the power supply path to determine whether the power supply path still meets the voltage gradient balance standard. If not, reselect the power supply path and adjust the power supply path to obtain a dynamically adjusted high-voltage distribution box power supply path.

7. A high-voltage distribution box design and optimization system, characterized in that: The system is used to perform the method according to any one of claims 1 to 6, comprising: The electric field gradient detection module obtains the electric field distribution data of the busbar arrangement area, detects the busbar potential difference, calculates the local field strength, screens the busbar area where the electric field gradient exceeds the set gradient threshold, and generates the electric field gradient mutation area; The busbar arrangement optimization module calculates the relative potential difference between the high and low voltage buses based on the electric field gradient mutation area, analyzes the local field strength at different adjacent distances, selects the busbar arrangement scheme with the most balanced electric field strength, adjusts the high-voltage busbar spacing, calculates the optimized electric field strength distribution, and generates the optimized busbar arrangement scheme; The voltage gradient anomaly analysis module collects voltage data from the power supply node to the load end based on the optimized busbar arrangement scheme, calculates the voltage gradient value of the power supply path, compares it with the voltage gradient reference threshold, and screens and generates voltage gradient anomaly paths; The power supply path matching module calculates the voltage gradient changes of all power supply paths based on the voltage gradient abnormal path, selects the path with the smallest gradient change, extracts the power supply node with the closest voltage gradient, and establishes a power supply path that matches the voltage gradient; The load fluctuation adaptation module obtains the power demand fluctuation at the load end based on the power supply path that matches the voltage gradient, calculates the voltage fluctuation caused by the load change, and determines whether the power supply path meets the gradient balancing standard. If not, the power supply path is reselected to generate a dynamically adjusted high-voltage distribution box power supply path.

Images