High-voltage distribution box design and optimization method and system

Abstract

The invention relates to the technical field of electric energy distribution optimization, and discloses a high-voltage distribution box design and optimization method and system, and the method comprises the following steps: obtaining the electric field distribution data of a bus arrangement region of a high-voltage distribution box, detecting the potential difference, calculating the local field intensity distribution, determining the electric field gradient mutation point between buses, and screening the electric field gradient mutation region. According to the method, potential distribution is more balanced by obtaining electric field distribution data of a bus arrangement area of a high-voltage distribution box, calculating local field intensity and identifying an electric field gradient mutation area, a reasonable distance is kept between a high-voltage bus and a low-voltage bus based on electric field balance degree analysis and optimization of a bus arrangement mode, and the voltage gradient of a power supply path is detected in combination. According to the power demand fluctuation condition of the load end, the voltage change amplitude of the power supply path is calculated, the power supply path is dynamically adjusted, the optimized power supply scheme reduces local overvoltage and undervoltage phenomena of the high-voltage distribution box, and the working reliability of the high-voltage distribution box is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution optimization, and particularly to a design and optimization method and system for a high-voltage distribution box. Background Art

[0002] The technical field of power distribution optimization involves the rational allocation and management of electric energy among different loads, power supply equipment, and network structures. The core content lies in improving the utilization rate of electric energy through reasonable distribution strategies and control methods to ensure the stability and security of the power supply system. 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, to improve power supply reliability and reduce losses, power distribution optimization usually relies on intelligent scheduling systems, dynamic distribution strategies, and adaptive control methods to optimize the allocation of power resources and ensure reasonable power supply among different regions and devices. With the development of high-voltage power transmission and distribution technology, it gradually evolves 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 for a high-voltage distribution box refers to improving the structural design of high-voltage distribution equipment, optimizing the power transmission path, and arranging electrical components to improve the rationality of power distribution, mainly covering the arrangement method of high-voltage switchgear, optimizing the busbar layout, and improving the insulation protection structure. By analyzing the current distribution characteristics under different load conditions, the cable connection method is adjusted to reduce line losses. Regarding the heat dissipation problem in the high-voltage distribution box, heat-conducting materials are used to optimize the heat dissipation channel to improve the equipment stability. In terms of short-circuit protection, a reasonable sectional protection strategy is configured in combination with a fast circuit breaker to enhance safety under overload conditions. In addition, the box design is optimized based on electromagnetic interference shielding technology, and the high-frequency interference is reduced by adjusting the grounding system and shielding layer structure to improve the operation reliability of the distribution equipment.

[0004] During the existing design and optimization process of high-voltage distribution boxes, there is a lack of precise analysis of the electric field distribution in the optimization of the busbar layout, resulting in too high electric field intensity in some areas and increasing the risk of insulation breakdown. The design of the busbar spacing does not fully consider the influence of potential difference, and the electromagnetic interference problem is relatively prominent, affecting the operation stability of low-voltage equipment. The selection of the power supply path mainly relies on a fixed topology structure, lacking real-time detection and adjustment of the voltage gradient, resulting in relatively large voltage fluctuations in some power supply paths and affecting the stability of power transmission. The voltage regulation ability at the load end is insufficient and cannot effectively cope with power demand fluctuations. The power supply system lags in adjustment when the load changes, resulting in abnormal local voltage and reducing the power supply quality. There is a lack of a dynamic path optimization mechanism and cannot quickly match the best power supply path under complex working conditions, making the power supply system prone to power supply imbalance under high load or sudden situations and affecting the overall power grid security. Summary of the Invention

[0005] The object of the present invention is to solve the disadvantages existing in the prior art, and a design and optimization method for a high-voltage distribution box is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a design and optimization method for a high-voltage distribution box, comprising the following steps: S1: Obtain the electric field distribution data of the bus 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 buses, 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, judge the electric field balance degree under different arrangement modes, adjust the distance between the high-voltage bus and the low-voltage bus, and obtain the optimized bus arrangement scheme; S3: According to the optimized bus arrangement scheme, collect the voltage data from each power supply node of the high-voltage distribution box to the load end, calculate the voltage gradient values of each power supply path, compare with the voltage gradient reference threshold, and obtain the voltage gradient abnormal path; S4: Based on the voltage gradient abnormal path, compare the voltage gradient change situations of all power supply paths of the high-voltage distribution box, screen the power supply path with the smallest gradient change, extract the power supply nodes with the closest voltage gradients, and establish a power supply path matching the voltage gradient; S5: Based on the power supply path matching the voltage gradient, detect the power demand fluctuation situation 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.

[0007] As a further scheme of the present invention, the electric field gradient mutation area includes electric field gradient mutation points, local field strength peak areas, and high-potential-difference bus gaps, the optimized bus arrangement scheme includes bus spacing adjustment parameters, bus arrangement modes, and electric field balance degree indexes, the voltage gradient abnormal path includes voltage gradient over-limit nodes, abnormal power supply paths, and local voltage fluctuation areas, the power supply path matching the voltage gradient includes power supply nodes with the closest voltage gradients, low-gradient-change power supply lines, and stable-voltage power supply paths, and the dynamically adjusted power supply path of the high-voltage distribution box includes load power fluctuation compensation paths, voltage gradient balance paths, and power supply path dynamic matching strategies.

[0008] As a further scheme of the present invention, the specific steps for obtaining the electric field distribution data of the bus 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 buses, and screening the electric field gradient mutation areas are as follows: S111: Obtain the electric field distribution data of the busbar arrangement area in the high-voltage power distribution box, detect the potential difference between each busbar, calculate the local field strength distribution value of each busbar, screen the 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 strength distribution value of the busbar, calculate the electric field gradient value between each busbar, judge the change rate of the electric field gradient, screen the busbar areas where the electric field gradient value is greater than the set gradient threshold, and use the formula: ; Calculate the electric field gradient distribution value between the busbars , compare with the gradient threshold to obtain the abnormal electric field gradient area, where, represents the local field strength value at the position, represents the local field strength value at the position, represents the potential value at the position, represents the potential value at the position, represents the distance between adjacent busbars, represents the total number of data points; S113: According to the abnormal electric field gradient area, screen the electric field gradient mutation points, determine the busbar area according to the spatial position of the gradient mutation points, and obtain the electric field gradient mutation area.

[0009] As a further solution of the present invention, based on the electric field gradient mutation area, analyze the potential difference between the high-voltage busbar and the low-voltage busbar, judge the electric field balance degree under different arrangement modes, and adjust the distance between the high-voltage busbar and the low-voltage busbar. The specific steps to obtain the optimized busbar arrangement scheme are as follows: S211: Based on the electric field gradient mutation area, calculate the potential difference between the high-voltage busbar and the low-voltage busbar, detect the adjacent distance between each busbar, analyze the influence of the adjacent distance of the busbar on the local field strength, and obtain the potential difference distribution record between the busbars; S212: According to the potential difference distribution record between the busbars, calculate the electric field balance degree under different busbar arrangement modes, and use the formula: ; Calculate the electric field balance degree index , screen the busbar arrangement scheme with the most balanced electric field strength, and obtain the balanced busbar arrangement scheme, where, represents the local field strength value of the th busbar, represents the total number of busbars, represents the potential value at the position, represents the total number of potential data points; S213: Combine the balanced busbar arrangement scheme, adjust the distance between the high-voltage busbar and the low-voltage busbar, recalculate the busbar arrangement parameters, and obtain the optimized busbar arrangement scheme.

[0010] As a further solution of the present invention, according to the optimized busbar arrangement scheme, collect the voltage data from each power supply node of the high-voltage distribution box to the load end, calculate the voltage gradient values of each power supply path, and compare with the voltage gradient reference threshold. The specific steps for obtaining the voltage gradient abnormal path are as follows: S311: Obtain the optimized busbar arrangement scheme, collect the voltage data from each power supply node of the high-voltage distribution box to the load end, perform normalization processing on the collected voltage data, calculate the voltage drop values of each power supply path, obtain the voltage drop change amount of each power supply path, and obtain the voltage drop change data; S312: Based on the voltage drop change data, calculate the voltage gradient values of each power supply path. Through path length normalization processing, use the formula: ; Calculate the normalized voltage gradient value of the power supply path , and based on the topological relationship of the power supply path, map it to the corresponding power supply path to obtain the voltage gradient mapping result, where represents the starting voltage value of path , represents the ending voltage value of path , represents the power supply length of path , represents the total normalized voltage gradient of all paths, represents the total number of power supply paths; represents the total number of power supply paths; S313: Based on the voltage gradient mapping result, compare with the voltage gradient reference threshold, screen the abnormal paths, and record the abnormal path numbers and the corresponding voltage gradient mapping values to obtain the voltage gradient abnormal paths.

[0011] As a further solution of the present invention, based on the voltage gradient abnormal path, compare the voltage gradient change conditions of all power supply paths in the high-voltage distribution box, screen the power supply path with the smallest gradient change, extract the power supply node with the closest voltage gradient, and establish the power supply path matching the voltage gradient. The specific steps are as follows: S411: Based on the voltage gradient abnormal path, calculate the voltage gradient change conditions of all power supply paths, perform segmented difference calculation, and statistically obtain the power supply path gradient change rate data; S412: According to the power supply path gradient change rate data, screen the power supply path with the smallest gradient change rate, and calculate the voltage difference between the starting point and the ending point of the path. Use the formula: ; Calculate the power supply path and the voltage gradient matching degree between the power supply paths , and perform path topology mapping to obtain the power supply path mapping result, where represents the starting voltage value of the power supply path , represents the starting voltage value of the power supply path , represents the ending voltage value of the power supply path , represents the distance from the power supply path to the power supply path represents the total sum of the squares of the lengths of all power supply paths represents the cumulative value of the voltage differences 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 nodes with the closest voltage gradient, and establish a power supply path that matches the voltage gradient according to the power supply path topology structure.

[0012] As a further solution of the present invention, based on the power supply path that matches the voltage gradient, detect the power demand fluctuation of 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 the specific steps to obtain the dynamically adjusted power supply path of the high-voltage distribution box are as follows: S511: Based on the power supply path that matches 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 change sequence, calculate the power demand change rate of each load end, and obtain the power demand change rate; S512: According to the power demand change rate, calculate the voltage change amplitude of the power supply path caused by the load change, analyze the voltage fluctuation trend of the power supply path according to the power demand change rate of each load end, the electrical parameters of the power supply path, and the power supply load distribution, and obtain the voltage change amplitude of the power supply path; S513: Call the voltage change amplitude of the power supply path, judge whether the power supply path still meets the voltage gradient balance standard, if not, reselect the power supply path, adjust the power supply path, and obtain the dynamically adjusted power supply path of the high-voltage distribution box.

[0013] A high-voltage distribution box design and optimization system includes: 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 areas where the electric field gradient exceeds the set gradient threshold, and generates electric field gradient mutation areas; Based on the sudden change region of the electric field gradient, the busbar arrangement optimization module calculates the relative potential difference between the high-voltage and low-voltage busbars, analyzes the local field strength at different adjacent distances, screens the busbar arrangement scheme with the most balanced electric field strength, adjusts the spacing of the high-voltage busbars, calculates the optimized electric field strength distribution, and generates the optimized busbar arrangement scheme; Based on the optimized busbar arrangement scheme, the voltage gradient anomaly analysis module collects the voltage data from the power supply node to the load end, calculates the voltage gradient value of the power supply path, compares it with the voltage gradient reference threshold, and screens and generates the voltage gradient abnormal path; Based on the voltage gradient abnormal path, the power supply path matching module calculates the voltage gradient change of all power supply paths, screens the path with the smallest gradient change, extracts the power supply nodes with the closest voltage gradient, and establishes the power supply path that matches the voltage gradient; Based on the power supply path that matches the voltage gradient, the load fluctuation adaptation module obtains the power demand fluctuation at the load end, calculates the voltage fluctuation caused by the load change, determines whether the power supply path meets the gradient balance standard. If not, it reselects the power supply path and generates the dynamically adjusted power supply path for the high-voltage distribution box.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 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 sudden change region of the electric field gradient, the potential distribution is made more balanced, the high-field strength region is reduced, the insulation performance of the busbars is improved. Based on the analysis of the electric field balance degree, the busbar arrangement is optimized, so that the high-voltage busbars and low-voltage busbars maintain a reasonable spacing, the influence of electromagnetic interference is reduced, and the stability of the power distribution system is improved. Combining with the detection of the voltage gradient of the power supply path, comparing the voltage changes of each power supply path, screening the path with the smallest gradient fluctuation, making the voltage distribution more uniform, reducing the impact of abnormal voltage on the load-end equipment. According to the power demand fluctuation at the load end, calculating the voltage change amplitude of the power supply path, dynamically adjusting the power supply path, so that the voltage is maintained balanced under different load conditions, improving the adaptability of the power supply system. The optimized power supply scheme reduces the local overvoltage and undervoltage phenomena of the high-voltage distribution box, makes the power distribution more efficient, reduces the power supply loss, improves the working reliability of the high-voltage distribution box, and enhances the stable power supply ability under complex working conditions. Description of the Drawings

[0015] Figure 1 It is the main step flow chart of the present invention; Figure 2 It is the flow chart of step S1 of the present invention; Figure 3 It is the flow chart of step S2 of the present invention; Figure 4 It is the flow chart of step S3 of the present invention; Figure 5Flow chart of step S4 of the present invention; Figure 6 Flow chart of step S5 of the present invention. Specific embodiments

[0016] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, 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 used to limit the present invention.

[0017] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, in the description of the present invention, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0018] Please refer to Figure 1 , a design and optimization method for a high-voltage distribution box, comprising the following steps: 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 points between the busbars, and screen the busbar areas where the electric field gradient exceeds the set gradient threshold to obtain the electric field gradient mutation area; S2: Based on the electric field gradient mutation area, analyze the potential difference between the high-voltage busbar and the low-voltage busbar, analyze the influence of the adjacent distance of the busbars on the local field strength, judge the electric field balance degree under different arrangement modes, screen 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; S3: According to the optimized busbar arrangement scheme, collect the voltage data from each power supply node of the high-voltage distribution box to the load end, calculate the voltage gradient values of each power supply path, and compare them with the voltage gradient reference threshold to obtain the voltage gradient abnormal path; S4: Based on the voltage gradient abnormal path, compare the voltage gradient change situations of all power supply paths of the high-voltage distribution box, screen the power supply path with the smallest gradient change, judge the voltage difference between the power supply nodes of the high-voltage distribution box, extract the power supply nodes with the closest voltage gradient, and establish a power supply path matching the voltage gradient; 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 equilibrium standard. If not, reselect the power supply path to obtain the dynamically adjusted power supply path of the high-voltage distribution box.

[0019] The electric field gradient mutation region includes the electric field gradient mutation point, the local field strength peak region, and the high potential difference busbar gap. The optimized busbar arrangement scheme includes the busbar spacing adjustment parameter, the busbar arrangement method, and the electric field balance index. The voltage gradient abnormal path includes the voltage gradient over-limit node, the abnormal power supply path, and the local voltage fluctuation region. The power supply path that matches the voltage gradient includes the power supply node with the closest voltage gradient, the power supply line with low gradient change, and the stable voltage power supply path. The dynamically adjusted power supply path of the high-voltage distribution box includes the load power fluctuation compensation path, the voltage gradient equilibrium path, and the power supply path dynamic matching strategy.

[0020] Please refer to Figure 2 , and the steps of S1 are as follows: S111: 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 value of each busbar, and screen the data points where the potential difference between the busbars is greater than the set reference potential difference to obtain the local field strength distribution value of the busbar. 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, the electric field strength, and the distance between the busbars. The potential value is 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 m, and at least 10 monitoring points are arranged in each area. Detect the potential difference between each busbar, and calculate the electric field strength distribution value between adjacent monitoring points. The electric field strength is calculated using the formula where and are the potential values of adjacent monitoring points respectively, is the distance between the two points. For example, in a certain busbar area, if the potentials of adjacent monitoring points are 3500 V and 3600 V respectively, and the distance is 0.5 m, then the local field strength V / m. Screen the data points where the potential difference between the busbars is greater than the set reference potential difference. The set reference potential difference is 100 V. The setting of this reference potential difference is based on the potential change range under the normal operating state of the busbar. After statistically analyzing multiple groups of operating data, combined with the potential stability and the short-term voltage fluctuation amplitude, this value is set so that it can cover the potential fluctuation situation under the normal operating state and effectively identify the abnormal potential difference area at the same time. If the adjacent potential difference in a certain area exceeds 100 V, it is marked as an abnormal potential area, and finally the local field strength distribution value of the busbar is obtained.

[0021] S112: Calculate the electric field gradient values between each busbar based on the local field strength distribution values of the busbars, judge the rate of change of the electric field gradient, screen the busbar areas where the electric field gradient values are greater than the set gradient threshold, using the formula: ; Calculate the distribution value of the electric field gradient between busbars , compare with the gradient threshold to obtain the abnormal electric field gradient area, where represents the local field strength value at the position, represents the local field strength value at the position, represents the potential value at the position, represents the potential value at the position, represents the distance between adjacent busbars, represents the total number of data points; Based on the local field strength distribution values of the busbars, calculate the electric field gradient values between each busbar. The electric field gradient represents the rate of change of the electric field with respect to the spatial position and is calculated using the formula.

[0022] The monitoring data of a certain area is as follows: Table 1 Data table of local field strength and potential of busbars 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 Substitute into the formula for calculation: ; ; ; ; ; Set the gradient threshold as [[ID=;57]]The gradient threshold is set based on the analysis of the electric field gradient data of multiple busbar areas, the distribution characteristics of the gradient are analyzed, and it is set in combination with the range of electric field gradient changes of the normally operating busbars. Through data screening, a critical value that can effectively distinguish abnormal gradient areas is selected to ensure that the gradient does not exceed this value under normal operating conditions, and at the same time ensure that the gradient in the abnormal area is significantly higher than the set gradient threshold to form an effective discrimination standard. Since 393.8 > 350, this area is determined to be an abnormal electric field gradient area.

[0023] S113: According to the abnormal electric field gradient area, screen the electric field gradient mutation points, determine the busbar area based on the spatial position of the gradient mutation points, and obtain the electric field gradient mutation area; Call the abnormal electric field gradient region, screen the mutation points of the electric field gradient. The basis for judging the mutation points is that the gradient change exceeds the set threshold. For example, the set threshold for the change of the electric field gradient is . This threshold is set based on the stability evaluation of the busbar electric field change. By analyzing the gradient change data between adjacent monitoring points, calculating the typical range of the gradient change under normal conditions, and combining the boundary conditions of the abnormal gradient change, 50 V / 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 mutation at this point, as shown in Table 2: Table 2 Data table of electric field gradient change Monitoring point number Gradient change (V / m) 1 20 2 80 Calculate the gradient change between adjacent monitoring points: ; ; ; Since the maximum gradient change exceeds this threshold, the monitoring point numbered 2 is marked as a mutation point, and finally the mutation region of the electric field gradient is obtained.

[0024] Please refer to Figure 3 , and the steps of S2 are as follows: S211: Based on the mutation region of the electric field gradient, calculate the potential difference between the high-voltage busbar and the low-voltage busbar, detect the adjacent spacing of each busbar, analyze the influence of the adjacent distance of the busbar on the local field strength, and obtain the record of the potential difference distribution between the busbars; Based on the mutation region of the electric field gradient, first measure the potential difference between the high-voltage busbar and the low-voltage busbar. This potential difference is calculated by the difference between the potential of the high-voltage side busbar and the potential of the low-voltage side busbar. For example, in a typical 10 kV high-voltage busbar and 380 V low-voltage busbar system, the potential difference is calculated as . Secondly, measure the actual distance between adjacent busbars. Taking the data shown in Table 1 as an example, the influence of different busbar spacings on the local field strength is significant, as shown in Table 1. Use a ranging sensor to measure the busbar spacings of multiple sampling points and calculate the average value. The measured spacings between the high-voltage busbar and the low-voltage busbar are four cases of 0.3 m, 0.5 m, 0.7 m, and 1.0 m, calculate the corresponding local field strengths, and calculate the field strength according to the formula where is the potential difference, is the busbar spacing. For example, when the busbar spacing , the calculated local field strength is , and when the busbar spacing , the calculated local field strength is . It can be seen that the smaller the busbar spacing, the greater the local field strength. Finally, the record of the potential difference distribution between the busbars is obtained.

[0025] Table 3: Local field strength under different bus bar spacings Busbar spacing (m) 0.3 0.5 0.7 1.0 Local field strength (V / m) 32067 19240 13743 9620 As shown in Table 3, different bus bar spacings have a direct impact on the local field strength. When the spacing is small, the field strength is large, and when the spacing increases, the field strength decreases.

[0026] S212: According to the recorded potential difference distribution between bus bars, calculate the electric field equilibrium degree under different bus bar arrangements, using the formula: ; Calculate the electric field equilibrium degree index , screen the bus bar arrangement scheme with the most balanced electric field strength to obtain the balanced bus bar arrangement scheme, where represents the local field strength value of the th bus bar, represents the total number of bus bars, represents the potential value at the th position, represents the total number of potential data points; Call the recorded potential difference distribution between bus bars to evaluate the electric field equilibrium degree under different bus bar arrangements. To calculate the electric field equilibrium degree, the mean square deviation is used to calculate the dispersion degree of the local field strength of the bus bars. When the local field strengths of four bus bars are 32067 V / m, 19240 V / m, 13743 V / m, and 9620 V / m respectively, calculate its mean square deviation: ; ; ; ; The calculated , this value represents the electric field equilibrium degree of the bus bar arrangement method, which can be used for screening different bus bar arrangement schemes, and finally obtain the balanced bus bar arrangement scheme. This value represents the dispersion degree of the local field strength data, that is, the fluctuation range of the local field strength of each bus bar compared to the overall average value. The smaller its value, the more uniform the distribution of the electric field in the bus bar system, the potential change between adjacent bus bars is relatively stable, and it is not easy to form an electric field mutation point. The calculation results show that the electric field equilibrium degree of the current bus bar arrangement method is relatively low, and there are large field strength fluctuations in some bus bar areas. It is necessary to adjust the bus bar spacing or optimize the arrangement method to reduce the value and make the overall electric field distribution of the system more balanced.

[0027] S213: Combine the balanced bus bar arrangement scheme, adjust the spacing between the high-voltage bus bar and the low-voltage bus bar, recalculate the bus bar arrangement parameters, and obtain the optimized bus bar arrangement scheme; 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.

[0028] See also Figure 4 , S3 steps are: 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; 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: ; 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: ; 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.: ; ; ; According to the above calculations, the voltage drop change values are 0.4 kV, 0.3 kV, and 0.7 kV respectively. These data will be used as input parameters for subsequent voltage gradient calculations to finally obtain the voltage drop change data.

[0029] S312: Based on the voltage drop change data, calculate the voltage gradient values of each power supply path. Through path length normalization, use the formula: ; Calculate the normalized voltage gradient value of the power supply path , and based on the topological relationship of the power supply path, map it to the corresponding power supply path to obtain the voltage gradient mapping result. Among them, represents the starting voltage value of path , represents the ending voltage value of path , represents the power supply length of path , represents the total normalized voltage gradient sum of all paths, represents the total number of power supply paths; represents the total number of power supply paths; Based on the voltage drop change data, calculate the voltage gradient values of each power supply path. The calculation of the voltage gradient needs to consider the length of the power supply path to ensure the comparability of the voltage gradients of paths with different lengths. Assume that the length of the 1→2 path is 200 m, the length of the 2→3 path is 150 m, and the length of the 1→3 path is 350 m. Then the voltage gradient calculation of the power supply path is as follows: ; ; ; Assume that there are 5 paths in the entire power supply network. The normalized power supply path gradient values are shown in Table 4: 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 As shown in Table 4, the normalized voltage gradients of each power supply path are the same. However, due to different power supply loads of different paths, subsequent mapping needs to be combined with the power supply topology relationship to obtain the voltage gradient mapping result.

[0030] S313: Based on the voltage gradient mapping result, compare with the voltage gradient reference threshold, screen abnormal paths, and record the abnormal path numbers and the corresponding voltage gradient mapping values to obtain the voltage gradient abnormal paths; Compare the voltage gradient with the voltage gradient reference threshold based on the voltage gradient mapping result to screen out abnormal paths. The voltage gradient abnormality determination standard is based on the industry's power design specifications. The setting of this threshold mainly refers to the allowable voltage drop limit of the line, the conductivity of the cable material, and the load change 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, the line length is usually between 500m and 2000m. The resistance characteristics of the wire and the load power factor on the line will affect the voltage drop distribution. Assume the wire resistance is , and the load current is , then the voltage drop on the line can be calculated as follows: ; Among them, is the line length, taking 1000m, then: ; If the voltage gradient is the ratio of the voltage drop to the path length: ; Considering the line material, load power factor, and temperature influence of different distribution systems, a certain margin needs to be reserved on this basis. Combining the possible voltage fluctuation range during the peak load period (such as a ±10% change range), the voltage gradient reference threshold is comprehensively set to 0.0025kV / m, that is: ; This threshold reflects the maximum allowable range of the voltage gradient under the normal operation of the power supply system, and at the same time ensures that even when the load fluctuates or the line length is adjusted, the voltage can still be maintained stable within the set range. If the voltage gradient of a certain path , then this path is determined as an abnormal path. Query the data in Table 4. The voltage gradients of each path are all 0.002kV / m and do not exceed the threshold, so there is no abnormal path. If the calculated result of the voltage gradient of a certain 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 calculation is: ; This value is greater than 0.0025kV / m, so path a→b is determined as an abnormal path. Finally, screen out the abnormal path numbers and the corresponding voltage gradient mapping values, and finally obtain the voltage gradient abnormal paths.

[0031] Please refer to Figure 5 , and the steps of S4 are: S411: Based on the voltage gradient abnormal paths, calculate the voltage gradient change of all power supply paths, perform segmented difference calculation, and statistically obtain the power supply path gradient change rate data; Based on the abnormal path of voltage gradient, it is necessary to calculate the voltage gradients of all power supply paths to evaluate their changes. First, it is necessary to extract the initial voltage value and the terminal voltage value of each power supply path, and calculate the voltage drop value between the initial voltage and the terminal voltage. Assuming that the starting voltage of a certain power supply path is 10.5 kV and the terminal voltage is 10.2 kV, then the voltage drop value of this path is 0.3 kV. Collect the voltage drop values of multiple power supply paths, and calculate the voltage gradient value per unit length to analyze the gradient change rate of the power supply path. Using the differential calculation method, based on the data of two adjacent moments, calculate the voltage gradient change rate of the power supply path over time.

[0032] Assume that the time interval is 10 minutes, and within 10 minutes, the voltage gradient changes from 0.02 kV / m to 0.018 kV / m, then 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 influence of different path lengths on the gradient change. Set the normalization reference value as the maximum value of the gradient change rates of all paths. Assuming that the maximum gradient change rate is 0.005 kV / m / min, then the gradient change rate of a certain path after normalization is calculated as follows: ; Calculate the normalized gradient change rates of all paths and store them for subsequent screening to obtain the gradient change rates of the power supply paths.

[0033] S412: According to the gradient change rate data of the power supply paths, screen the power supply path with the smallest gradient change rate, and calculate the voltage difference between the starting point and the ending point of the path. Use the formula: ; Calculate the voltage gradient matching degree between the power supply path and the power supply path , and perform path topology mapping to obtain the power supply path mapping result. Among them, represents the starting voltage value of the power supply path , represents the starting voltage value of the power supply path , represents the ending voltage value of the power supply path , represents the distance from the power supply path to the power supply path represents the sum of the squares of the total lengths of all power supply paths, represents the cumulative value of the voltage differences of all power supply paths, represents the total number of power supply paths; According to the rate of change of the power supply path gradient, select the power supply path with the minimum rate of change of the gradient, and calculate the voltage difference between the starting point and the ending point of this path. During the calculation process, it is necessary to normalize according to the voltage value data of this path to match the voltage differences between different power supply paths.

[0034] Suppose the starting point voltage of path A is 10.5 kV, the ending point voltage is 10.2 kV, the path length is 500 m, and the sum of the squares of the total lengths of all paths in the system is , and the sum of the voltage differences of all power supply paths is 1.5 kV, then the calculation is as follows: ; ; ; This value represents the voltage gradient matching value of path A, and based on this, the power supply paths are sorted, the most matching power supply path is selected, and the power supply path mapping result is obtained.

[0035] S413: Based on the power supply path mapping result, extract the power supply nodes with the closest voltage gradients, and establish a power supply path that matches the voltage gradient according to the power supply path topological structure; Based on the power supply path mapping result, extract the power supply nodes with the closest voltage gradients, and establish a power supply path that matches the voltage gradient according to the power supply path topological structure. To determine the power supply nodes with the closest gradients, it is necessary to calculate the voltage gradient similarity of all power supply paths. The mean square error is used to calculate the similarity of the voltage gradients. Suppose 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, then the similarity calculation is as follows: ; If this 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 basis of this similarity threshold comes from the rated voltage fluctuation range of grid equipment and the statistical analysis of actual monitoring data. Usually, the allowable voltage deviation range of a 10 kV class 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 (where is the power supply path length), and according to the calculation of typical distribution paths (length 500 m - 1000 m), this value is approximately between 0.000002 - 0.000005. Therefore, the lower limit value 0.000002 is selected as the threshold to ensure that the voltage gradient differences between the selected power supply nodes are minimized, thereby avoiding the impact of the accumulation of path selection errors on power supply stability), and the calculation result 0.0000005 is less than the threshold. Therefore, A and B can be connected, and finally a power supply path that matches the voltage gradient is established.

[0036] Table 5 Power supply path voltage data table Power supply path Initial voltage (kV) Terminal voltage (kV) Power supply path length (m) Normalized gradient change rate A 10.5 10.2 500 -0.4 B 10.4 10.0 600 -0.3 C 10.6 10.1 700 -0.2 As shown in Table 5, the voltage data of the power supply path are provided, and the normalized gradient change rate is calculated. This data is used to subsequently screen the optimal power supply path.

[0037] Please refer to Figure 6 , and the steps of S5 are as follows: S511: 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, obtain the power demand data at the load end and its time change sequence, calculate the power demand change rate of each load end, and obtain the power demand change rate; Based on the power supply path that matches the voltage gradient, first, determine the topology of the power supply system, including the connection relationships of each node and line, and clarify the electrical parameters of each power supply path, such as line resistance, inductance, etc. Assume that the power supply system adopts a three-phase four-wire system, the line voltage is 220V, the frequency is 50Hz, each phase load is a resistive load, and the power factor is set to 1. Next, install power sensors to monitor the power demand changes at the load end of the high-voltage distribution box in real time, collect power data and record timestamps. Assume that at a certain moment, the power of the A-phase load is 100kW, the power of the B-phase load is 80kW, and the power of the C-phase load is 90kW. Subsequently, obtain the power demand data at the load end and its time change sequence, arrange the collected data in chronological order to form a power change time sequence, and count the power change amount at each moment. For example, within the next 10 minutes, the power of the A-phase load increases to 110kW, the power of the B-phase load decreases to 75kW, and the power of the C-phase load remains unchanged at 90kW. Then, calculate the power demand change rate of each load end, using the formula power change rate = (current power - initial power) / initial power × 100% for calculation. It is calculated that the power change rate of the A-phase is (110kW - 100kW) / 100kW × 100% = 10%, the power change rate of the B-phase is (75kW - 80kW) / 80kW × 100% = -6.25%, and the power change rate of the C-phase is (90kW - 90kW) / 90kW × 100% = 0%. Finally, obtain the power demand change rate.

[0038] S512: According to the power demand change rate, calculate the voltage change amplitude of the power supply path caused by the load change. Based on the power demand change rate of each load end, the electrical parameters of the power supply path, and the power supply load distribution, analyze the voltage fluctuation trend of the power supply path and obtain the voltage change amplitude of the power supply path; According to the rate of change of power demand, 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 0.1 Ω and the reactance is 0.05 Ω. Next, calculate the corresponding current change amount according to the rate of change of power demand at each load end. Use the formula current change amount = power change amount / line voltage for calculation. It is calculated that the current change amount of phase A is (110 kW - 100 kW) / 220 V = 45.45 A, phase B is (75 kW - 80 kW) / 220 V = -22.73 A, and phase C is 0 A. Subsequently, calculate the voltage drop change caused by the current change. Use the formula voltage drop change = current change amount × line impedance, where the line impedance = , and it is calculated that the line impedance is = 0.112 Ω. The voltage drop change of phase A is 45.45 A × 0.112 Ω = 5.09 V, phase B is -22.73 A × 0.112 Ω = -2.55 V, and phase C is 0 V. Then, analyze the voltage fluctuation trend of the power supply path, compare the voltage drop changes of each phase, and judge the degree of voltage imbalance. Assume that the voltage imbalance threshold is set at 2%. The basis is the regulation of the national standard GB / T 15543-2008 "Power Quality - Three-phase Voltage Imbalance". This standard requires that the voltage imbalance of general low-voltage distribution networks should not exceed 2%. If it exceeds this range, it will cause additional losses of motors and power transformers and affect the operation stability of equipment. This threshold fluctuates with the current distribution and load nature of the system load and usually needs to be re-evaluated and adjusted after the access of high-power non-linear loads, that is, 2% of the line voltage. It is calculated that 220 V × 2% = 4.4 V. Finally, obtain the voltage change amplitude of the power supply path.

[0039] S513: Invoke the voltage change amplitude of the power supply path to judge whether the power supply path still meets the voltage gradient equilibrium standard. If not, reselect the power supply path, adjust the power supply path, and obtain the dynamically adjusted power supply path of the high-voltage distribution box; Based on the voltage change amplitude of the power supply path, judge whether the power supply path still meets the voltage gradient equilibrium standard. First, compare the voltage change amplitudes of each phase to judge whether they exceed the preset voltage imbalance threshold. Assume that the voltage change of phase A is 5.09 V, phase B is -2.55 V, and phase C is 0 V. The voltage change amplitude of phase A exceeds the threshold of 4.4 V. Next, if not, reselect the power supply path, adjust the load distribution, and balance the loads of each phase. Assume that 10 kW of the load of phase A is transferred to phase C, reducing the power of phase A to 100 kW and increasing the power of phase C to 100 kW. Recalculate the current change amount and voltage drop change of each phase to ensure that the voltage change amplitude of each phase is within the threshold range. Finally, adjust the power supply path to obtain the dynamically adjusted power supply path of the high-voltage distribution box.

[0040] A high-voltage distribution box design and optimization system, comprising: The electric field gradient detection module obtains the electric field distribution data of the bus arrangement area, detects the bus potential difference, calculates the local field strength, screens the bus areas where the electric field gradient exceeds the set gradient threshold, and generates the electric field gradient mutation area; The bus arrangement optimization module calculates the relative potential difference between the high-voltage and low-voltage buses based on the electric field gradient mutation area, analyzes the local field strength at different adjacent distances, screens the bus arrangement scheme with the most balanced electric field strength, adjusts the high-voltage bus spacing, calculates the optimized electric field strength distribution, and generates the optimized bus arrangement scheme; The voltage gradient anomaly analysis module collects the voltage data from the power supply node to the load end based on the optimized bus arrangement scheme, calculates the voltage gradient value of the power supply path, compares it with the voltage gradient reference threshold, and screens and generates the voltage gradient anomaly path; The power supply path matching module calculates the voltage gradient change of all power supply paths based on the voltage gradient anomaly path, screens the path with the smallest gradient change, extracts the power supply nodes with the closest voltage gradient, and establishes the power supply path that matches the voltage gradient; The load fluctuation adaptation module obtains the load end power demand fluctuation based on the power supply path that matches the voltage gradient, calculates the voltage fluctuation caused by the load change, determines whether the power supply path meets the gradient balance standard. If not, it reselects the power supply path and generates the dynamically adjusted high-voltage distribution box power supply path.

[0041] The above is only the preferred embodiment of the present invention, and does not limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A design and optimization method for a high-voltage distribution box, characterized in that, It includes the following steps: S1: Obtain the electric field distribution data of 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 busbar and the low-voltage busbar, judge the electric field balance degree under different arrangement methods, adjust the distance between the high-voltage busbar and the low-voltage busbar, and obtain the optimized busbar arrangement scheme; S3: According to the optimized busbar arrangement scheme, collect the voltage data from each power supply node of the high-voltage distribution box to the load end, calculate the voltage gradient values of each power supply path, compare with the voltage gradient reference threshold, and obtain the voltage gradient abnormal path; S4: Based on the voltage gradient abnormal path, compare the voltage gradient change conditions of all power supply paths in the high-voltage distribution box, screen the power supply path with the smallest gradient change, extract the power supply nodes with the closest voltage gradients, and establish a power supply path matching the voltage gradient; S5: Based on the power supply path matching the voltage gradient, detect the power demand fluctuation condition 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 design and optimization method of the high-voltage distribution box 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 busbar gap. The optimized busbar arrangement scheme includes the busbar spacing adjustment parameter, the busbar arrangement method, and the electric field balance degree index. The voltage gradient abnormal path includes the voltage gradient over-limit node, the abnormal power supply path, and the local voltage fluctuation area. The power supply path matching the voltage gradient includes the power supply node with the closest voltage gradient, the low-gradient change power supply line, and the stable voltage power supply path. The dynamically adjusted power supply path of the high-voltage distribution box includes the load power fluctuation compensation path, the voltage gradient balance path, and the power supply path dynamic matching strategy.

3. The design and optimization method of the high-voltage distribution box according to claim 1, characterized in that, The specific steps for obtaining the 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 points between the busbars, and screening the electric field gradient mutation area are as follows: S111: 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 value of each busbar, and screen the data points where the potential difference between the busbars is greater than the set reference potential difference to obtain the local field strength distribution value of the busbar; S112: Based on the local field strength distribution value of the busbar, calculate the electric field gradient value between each busbar, judge the electric field gradient change rate, screen the busbar areas where the electric field gradient value is greater than the set gradient threshold, and use the formula: ； Calculate the electric field gradient distribution value between busbars , compare with the gradient threshold to obtain the abnormal electric field gradient region, where represents the local field strength value at the position, represents the local field strength value at the position, represents the potential value at the position, represents the potential value at the position, represents the distance between adjacent busbars, represents the total number of data points; S113: According to the abnormal electric field gradient area, screen the electric field gradient mutation points, determine the busbar area according to the spatial position of the gradient mutation point, and obtain the electric field gradient mutation area.

4. The design and optimization method of the high-voltage distribution box according to claim 1, characterized in that The specific steps for analyzing the potential difference between the high-voltage busbar and the low-voltage busbar based on the electric field gradient mutation area, judging the electric field balance degree under different arrangement methods, adjusting the distance between the high-voltage busbar and the low-voltage busbar, and obtaining the optimized busbar arrangement scheme are as follows: 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 intensity, and obtain the balanced busbar arrangement scheme, where represents the local field strength value of the th busbar, represents the total number of busbars, represents the potential value at the th position, represents the total number of potential data points; 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.

5. The design and optimization method of the high-voltage distribution box 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: ； Calculate the power supply path of the normalized voltage gradient value , and based on the topological relationship of the power supply path, map it to the corresponding power supply path to obtain the voltage gradient mapping result, where represents the starting voltage value of the path , represents the ending voltage value of the path , represents the power supply length of the path , represents the sum of the normalized 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.

6. The design and optimization method of the high-voltage distribution box 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: ； Calculate the power supply path Match the voltage gradient with the power supply path and perform path topology mapping to obtain the power supply path mapping result, where , represents the starting voltage value of the power supply path , represents the starting voltage value of the power supply path , represents the ending voltage value of the power supply path , represents the distance between the power supply path and the power supply path , represents the total sum of the squares of the lengths of all power supply paths represents the cumulative value of the voltage differences 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.

7. The design and optimization method of the high-voltage distribution box 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: Invoke the voltage change amplitude of the power supply path, determine whether the power supply path still meets the voltage gradient balance standard. If not, reselect the power supply path, adjust the power supply path, and obtain the dynamically adjusted power supply path of the high-voltage distribution box.

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

Images