A method and system for analyzing cable detection data

Abstract

The present invention discloses a cable installation analysis method and system based on cable detection data, which relates to the field of data processing technology. The analysis system includes: a path generation module, a mimicry module, a load assessment module, and a laying estimation module. The cable installation analysis method and system based on cable detection data described in the present invention, based on the existing "navigation system", screens the laid cables by inputting the end point coordinates and working parameters of the cables to be added, finds the cables that meet the installation requirements, and then uses the channel where the cables can be added as the starting point coordinates to generate the cable installation route, which is convenient for actual implementation. Secondly, by adjusting the working parameters of each cable on the cable installation path, the influence of the cables to be added on other cables in the same channel is simulated, so as to predict the cable status evaluation value in the channel in advance, and improve the rationality and safety of the laying route selection.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to an additional analysis method and system based on cable detection data. Background Art

[0002] As the power load continues to increase, the demand for cable addition management continues to increase. Traditional cable addition management often relies on manual experience and judgment, and there are many problems such as low efficiency, poor accuracy, and low automation level. At the same time, the operating environment of cables continues to develop in a diversified and complex direction, and the difficulty of cable addition management is increasing. How to achieve high-quality cable addition management has attracted widespread attention.

[0003] There are two traditional ways to add cables. One is to add a branch cable at the connection point, which is to add a branch cable at the connection point of the laid cable. Since the position of the cable connection point is fixed and cannot be moved, the cable needs to be laid an additional distance when adding cables to facilitate the extension of the cable to the connection point (that is, pulling out a cable from the connection point). This method is time-consuming and labor-intensive and also wastes resources; the other is to add a cable by breaking the line, which is to directly connect a cable at the position where the laid cable is closest to the cable to be added, that is, to cut off the insulation of the laid cable to expose the copper wire inside, and then connect the copper wire at the end of the cable to be added to the exposed copper wire, and finally seal the connection. This process is quick and this method is also the most commonly used method for adding cables.

[0004] At present, a Chinese patent with the existing patent application number of "CN202310193215.9" discloses a cable detection data-based additional analysis method and system, which involves the field of data processing, wherein the method includes: preset channel cable detection data including daily current load detection data; extracting peak values ​​according to the daily current load detection data to obtain the daily current load peak value; performing daily current load maximum value analysis according to the cable laying pipe distribution information to generate the daily current load threshold; judging whether the daily current load peak value meets the daily current load threshold; if not, generating a first design instruction, performing cable additional analysis based on the spare pipe distribution information, generating a cable additional plan; and managing the cable additional plan according to the cable additional plan. Although it can solve the technical problem of insufficient accuracy of cable additional analysis in the prior art to a certain extent, since the plan is mainly for setting the cable laying plan based on the arrangement of the laid pipelines, and there is not only one cable in the same channel, the cluster cables in the underground pipes can be equivalent to heat sources and magnetic fields when running, and the thermal effects between adjacent cables affect each other. Therefore, we cannot just focus on how to lay the cables, but need to comprehensively consider the impact of the cables to be laid on other cables in the same channel.

[0005] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems:

[0006] The implementation is difficult, and it is impossible to comprehensively consider the interference when laying the additional cables: In the actual laying process, it is necessary to first plan the additional cable path according to the remaining holes in the channel, and then adjust the additional path according to the actual investigation situation, which requires a lot of time and energy. The existing cable addition analysis system only considers whether the cable can be laid in the channel, which cannot meet the actual needs. Moreover, this analysis method can only remain in the conceptual stage and cannot be truly implemented. Secondly, magnetic fields and thermal fields will be formed during the use of cables, and the thermal effects between adjacent cables will affect each other, resulting in temperature fields with different distribution degrees. The same is true for the magnetic fields. Moreover, due to objective conditions such as soil thermal resistance, it is difficult to dissipate heat in the cable channel. In an environment with high temperature values ​​for a long time, the insulation performance gradually deteriorates, and the service life of the cable is shortened. Therefore, it is not limited to how to lay the cable, but it is necessary to comprehensively consider the impact of the cable to be laid on other cables in the same channel. To this end, we propose an additional analysis method and system based on cable detection data. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies in the prior art, the present invention provides a cable installation analysis method and system based on cable detection data. Based on the existing "navigation system", by inputting the end point coordinates and working parameters of the cables to be installed into the "navigation system", the laid cables are screened to find the cables that meet the installation requirements, and then the channel where the cables can be installed is used as the starting point coordinates, and the cable installation route is generated in the "navigation system". At the same time, the corresponding screening instructions can be input according to the construction requirements, so that the generated cable installation route is more accurate and convenient to implement. Secondly, by adjusting the working parameters of each cable on the cable installation path, the impact of the cables to be installed on other cables in the same channel during actual use is simulated, so as to predict the cable status evaluation value Qpgt in the channel in advance. z , improve the rationality and safety of laying route selection, and solve the technical problems that the existing cable addition analysis system is difficult to implement and cannot comprehensively consider the interference factors when laying the additional cables.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0011] An additional analysis system based on cable detection data, the analysis system comprising:

[0012] The path generation module sets the end point coordinates of the cables to be added and the working parameters of the cables to be added under the use status, selects the laid cables, takes the coordinates of the channel where the laid cables that meet the requirements for the addition are located as the starting point coordinates, and generates the cable addition path;

[0013] The mimic module obtains the load redundancy working parameters corresponding to the cables that can be added, builds a redundancy calculation model, and calculates the redundancy value A of the cables that can be added. R , and according to the distance L0 from the terminal coordinates to the additional cable, the redundancy value A is matched in ascending order. R Adjust the working parameters of the corresponding laid cables, record the working parameters of all cables in the channel where the additional path is located before and after the adjustment, and generate the cable status evaluation value Qpgt in the corresponding channel based on the obtained working parameters z ;

[0014] Among them, the mimicry module includes a load unit, a collection unit, a transmission unit and a voltage regulation and stabilization unit;

[0015] When the cable is in a non-mimetic detection condition, the collection unit and the transmission unit are triggered, the collection unit collects the working parameters of all cables in the channel where the additional path is located under the use status, and then the transmission unit uploads the collected cable working parameters;

[0016] When the cable is under the mimic detection condition, the load unit and the voltage regulating unit are triggered to adjust the resistance value of the access cable line and the output voltage of the cable;

[0017] The load assessment module retrieves and quantifies the cable status assessment value Qpgt z And the working parameters of the cable to be added in use state, generate the cable load assessment value Qckt q , and the obtained cable load assessment value Qckt q Comparing with a preset comparison threshold range;

[0018] If the cable load assessment value Qckt q Within the comparison threshold range or the cable load evaluation value Qckt q When it is greater than the comparison threshold range, no response is made and a laying plan is generated;

[0019] If the cable load assessment value Qckt q When it is less than the comparison threshold range, an early warning is issued and the corresponding load redundancy value A is retrieved. R and the working parameters of the cable to be added under use to generate the correction coefficient δ x , the correction coefficient δ x Substitute into the redundancy calculation model and recalculate the redundancy value A of the additional cables R ;

[0020] The laying estimation module selects construction points on the laid channel according to the generated laying plan, obtains the environmental parameters around the construction point, and combines the cable load assessment value Qckt q , generate the estimated value Spid of the laying difficulty of the laying scheme under the influence of environmental parameters c .

[0021] Furthermore, the starting point coordinates include the pipe opening coordinates and node coordinates of the laid channel, and the working parameters of the cable to be added under the use state include the daily load peak Q j , output voltage U0 and output current I0, the specific process of generating the cable extension path is:

[0022] Retrieve the coordinates of the channel line of the laid cables and the redundant load of the corresponding line, and compare the redundant load of the corresponding line with the daily load peak value of the cable to be added under the use status;

[0023] If the redundant load of the line is less than or equal to the peak daily load Q of the cable to be added j If , no response is given;

[0024] If the redundant load of the line is greater than the daily load peak value Q of the cable to be added j When the line is qualified, a qualified signal is issued and the line is recorded as a line that can be added;

[0025] The coordinates of the channel where the additional line is located are used as the starting coordinates to generate the laying route of the cable to be added;

[0026] Obtain the price per unit length of cable, geographical environment, and number of laid cables, optimize the laying routes of the additional cables, and obtain the cable addition path.

[0027] Furthermore, when the load redundancy working parameters are obtained, the shortest distance between the set end point coordinates and the end point coordinates is calculated, and the cables that can be added are sorted from near to far, and then the redundancy values ​​A of the cables that can be added are generated in sequence. R , generate the redundant value A of the additional cables R The formula is as follows:

[0028]

[0029] In the formula, Q d is the redundant load of the laid cables, U s is the redundant voltage of the laid cable, L z is the total length of the laid cables, σ and τ are the weight coefficients of the load redundancy of the laid cables and the power redundancy ratio of the laid cables, respectively, and 1≥σ>0, 1>τ>0; where A R >0, when A R≤0, then delete the redundant value A R The corresponding cable;

[0030] Correction coefficient δ x The initial value of is 0, according to the cable load evaluation value Qckt q The comparison result with the preset comparison threshold range is used to correct the correction coefficient δ x Adjustment is made, and the correction factor δ x Always <1; at redundancy value A R Before calculation, the corresponding correction coefficient is retrieved according to the soil thermal resistance coefficient, and the current of the cable in use state is corrected by the correction coefficient, and the obtained value is recorded as the output current I0.

[0031] Furthermore, the laid cables are sorted according to the distance L0 between the addable cables and the end point coordinates, and the corresponding working parameters of the laid cables are adjusted in sequence according to the sorted order to generate the cable status evaluation value Qpgt in the corresponding channel z The formula is as follows:

[0032]

[0033] In the formula, Q j0 is the daily load peak value of the nth laid cable before adjustment, Q jz is the adjusted daily load peak of the nth laid cable, A R0 is the redundancy value of the nth laid cable before adjustment, A Rz is the redundancy value after adjustment for the nth laid cable, tex and lpg are the weight coefficients of the daily load peak change and the redundancy value change, respectively, and

[0034] 1>tex>0,1>lpg>0,lpg+tex=1,n={1,2,...,k},k is a positive integer;

[0035] The specific process of adjusting working parameters is as follows:

[0036] According to the number of cables already laid on the cable extension route, n, the daily load peak value Q of the cables to be added under use status is calculated. j And the output voltage U0 is divided into corresponding quantities to obtain the daily load peak adjustment value

[0037] and output voltage adjustment value

[0038] According to the order, the working parameters corresponding to the laid cables are adjusted in turn, and the working parameters before and after each adjustment are recorded.

[0039] Furthermore, before the working parameters are adjusted, the rated daily load peak and output voltage of the laid cable are retrieved, and the difference between the rated daily load peak and the actual daily load peak of the laid cable and the difference between the rated output voltage and the actual output voltage are calculated;

[0040] Peak load difference of the day ≥ And the output voltage difference ≥ If , no response is given;

[0041] Peak load difference of the day< And the output voltage difference < When the rated daily load peak or rated output voltage of the cable is used as the adjusted working parameter, the remaining amount of parameter adjustment is substituted into the working parameter of the next laid cable;

[0042] When all laid cables are adjusted and there is still some remaining amount for parameter adjustment, the remaining amount is discarded and marked as a section to be tested.

[0043] Further, the cable load evaluation value Qckt is generated q The formula is as follows:

[0044]

[0045] Where U 0s is the rated voltage of the cable to be added, and G1 is the correction factor.

[0046] Furthermore, the correction coefficient δ x The specific process of generation is as follows: when receiving an early warning, the load redundancy working parameters of the corresponding cable and the working parameters of the cable to be added in the use state are retrieved, and the redundancy value A of the cable that can be added is calculated respectively. R and the usage status value of the cable to be added, and compare the two; among them, when the redundancy value A of the cable that can be added R > The usage status value of the cable to be added, then the correction factor

[0047] Otherwise, the correction coefficient

[0048]

[0049] Furthermore, environmental parameters include human flow D, power consumption Q, ambient temperature W and construction scope M.

[0050]

[0051] Assume that the environmental interference value C on the route 环境 ,in Indicates the correction factor of the preset environmental interference value, Dc , Q c , W c 、M c represent the weights of passenger flow, power consumption, ambient temperature and construction scope respectively, and D c >0,Q c >0,W c >0,M c >0, G2 is the correction coefficient;

[0052] Generate the estimated value Spid for the difficulty of laying c The formula is as follows:

[0053]

[0054] Where a1 and a2 are the preset proportional coefficients of the cable status evaluation value and the environmental interference index, respectively, and

[0055] a2>a1>0.

[0056] Furthermore, the analysis system also includes:

[0057] Install a feedback module to obtain the operating parameters of all cables on the cable extension path after the cables to be added are installed, and compare them with their rated operating parameters;

[0058] Among them, when the working parameters of the added cable are within the rated working parameter range, a qualified result is output, and the added working parameters are compared with the rated working parameters once every 2-3 hours, and the detection is stopped after 15 days;

[0059] When the operating parameters of the added cable are not within the rated operating parameter range, a correction alarm is issued, maintenance personnel are dispatched for on-site inspection, and the path generation module is adjusted based on the results.

[0060] Furthermore, an additional analysis method based on cable detection data is provided, the analysis method comprising:

[0061] Set the end point coordinates of the cable to be added and the working parameters of the cable to be added under use status, filter the laid cables, take the coordinates of the channel where the laid cables that meet the addition requirements are located as the starting point coordinates, and generate the cable addition path;

[0062] Obtain the load redundancy working parameters corresponding to the cables that can be added, build a redundancy calculation model, and calculate the redundancy value A of the cables that can be added R , and according to the distance L0 from the terminal coordinates to the additional cable, the redundancy value A is matched in ascending order. RAdjust the working parameters of the corresponding laid cables, record the working parameters of all cables in the channel where the additional path is located before and after the adjustment, and generate the cable status evaluation value Qpgt in the corresponding channel based on the obtained working parameters z ;

[0063] Among them, the mimicry module includes a load unit, a collection unit, a transmission unit and a voltage regulation and stabilization unit;

[0064] When the cable is in a non-mimetic detection condition, the collection unit and the transmission unit are triggered, the collection unit collects the working parameters of all cables in the channel where the additional path is located under the use status, and then the transmission unit uploads the collected cable working parameters;

[0065] When the cable is under the mimic detection condition, the load unit and the voltage regulating unit are triggered to adjust the resistance value of the access cable line and the output voltage of the cable;

[0066] Retrieve and quantify the cable status assessment value Qogt z And the working parameters of the cable to be added in use state, generate the cable load assessment value Qckt q , and the obtained cable load assessment value Qckt q Comparing with a preset comparison threshold range;

[0067] If the cable load assessment value Qckt q Within the comparison threshold range or the cable load evaluation value Qckt q When it is greater than the comparison threshold range, no response is made and a laying plan is generated;

[0068] If the cable load assessment value Qckt q When it is less than the comparison threshold range, an early warning is issued, and the corresponding redundant working parameters and the working parameters of the cable to be added in the use state are retrieved to generate the correction coefficient δ x , the correction coefficient δ x Substitute into the redundancy calculation model and recalculate the redundancy value A of the additional cables R ;

[0069] According to the generated laying plan, a construction point is selected on the laid channel, and the environmental parameters around the construction point are obtained, and the cable load assessment value Qckt is combined with the cable load assessment value Qckt. q , generate the estimated value Spid of the laying difficulty of the laying scheme under the influence of environmental parameters c ,Environmental parameters include human flow D, power consumption Q, ambient temperature W and construction scope M.

[0070] (III) Beneficial effects

[0071] The present invention is based on the existing "navigation system". By inputting the end point coordinates and working parameters of the cables to be added into the "navigation system", the laid cables are screened to find the cables that meet the requirements for the addition. Then, the channel where the cables can be added is used as the starting point coordinates, and the cable addition route is generated in the "navigation system". At the same time, the corresponding screening instructions can be input according to the construction requirements, so that the generated cable addition route is more accurate and convenient to implement. Secondly, by adjusting the working parameters of each cable on the cable addition path, the influence of the cables to be added on other cables in the same channel during actual use is simulated, so as to predict the cable status evaluation value Qpgt in the channel in advance. z , improving the rationality and safety of paving route selection.

[0072] The present invention converts the cable status evaluation value Qpgt into z Combined with the working parameters of the cable to be added in use, a cable load assessment value Qckt is obtained to intuitively evaluate the cable load capacity. q , so as to intuitively understand the cable load carrying capacity of each cable laying channel, facilitate and accurately control the use range of each cable in the channel, thereby improving the service life of the cable and the accuracy of operation and maintenance; then according to the cable load assessment value Qckt q Compare the result with the comparison threshold value to obtain the correction factor δ for adding cables x , adjust the screening criteria for additional cables to adapt to the interference caused by cable aging, damage and other factors. Secondly, calculate the interference value C of the external environment on the actual construction based on the environmental parameters when the cables are laid, such as human flow, vehicle flow, temperature, etc. 环境 and a comparable estimate of the difficulty of laying Spid c , so as to plan the best construction strategy and improve construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0074] Figure 1 The present invention is a system block diagram of an additional analysis system based on cable detection data. DETAILED DESCRIPTION

[0075] The embodiment of the present application provides a cable installation analysis method and system based on cable detection data to solve the technical problems that the existing cable installation analysis system is difficult to implement and cannot comprehensively consider the interference factors when laying the cables to be added. Based on the existing "navigation system", the end point coordinates and working parameters of the cables to be added are input into the "navigation system" to screen the laid cables to find the cables that meet the installation requirements. Then, the channel where the cables can be added is used as the starting point coordinates to generate the cable installation route in the "navigation system". At the same time, the corresponding screening instructions can be input according to the construction requirements, so that the generated cable installation route is more accurate and convenient to implement. Secondly, by adjusting the working parameters of each cable on the cable installation path, the impact of the cables to be added on other cables in the same channel during actual use is simulated, so as to predict the cable status evaluation value Qpgt in the channel in advance. z , improving the rationality and safety of paving route selection.

[0076] Embodiment 1: The technical solution in the embodiment of the present application is to solve the technical problem that the existing cable addition analysis system is difficult to implement and cannot comprehensively consider the interference factors when laying the additional cables. The overall idea is as follows:

[0077] In view of the problems existing in the prior art, the present invention provides an additional analysis system based on cable detection data. The development process of the system is as follows:

[0078] Research and development concept:

[0079] According to the market research results on the problems encountered in the current cable laying, although there are many cable laying schemes on the market, most of them remain on "paper" and cannot be truly implemented. For example, the journal "Optimization of the Location of New Cables Considering the Operating Temperature of the Cluster" published by the State Grid Zhejiang Haiyan County Power Supply Company in April 2022 points out that during the second planning of the distribution network and the expansion of cables, the thermal effect of underground cable clusters during operation cannot be ignored. During planning and design, it is necessary to optimize the location of the newly added shunt cables and optimize the operating temperature by reasonably selecting the holes in the channel. The optimization results show that when the existing line topology is not changed, the more dispersed the location of the newly added cables is during cable shunting, the better the shunting effect. In addition, the optimization model established in this article contains complex matrix data structures, which can be solved by improving the PSO algorithm.

[0080] Although it is clearly pointed out that the thermal effect during the operation of underground cable clusters cannot be ignored and needs to be taken into consideration when laying cables, in actual use, the thermal effect is only one of the many influencing factors in the cable laying process. There are many factors we need to consider, such as the laying location of the cable, the impact of cable laying on pedestrian and vehicle traffic, etc. These are all issues we need to consider, and for this we need an auxiliary system that can comprehensively consider various situations during laying.

[0081] In addition, according to the existing patent application number: "CN202310193215.9", a cable detection data-based additional analysis method and system are disclosed, which involves the field of data processing, wherein the method includes: preset channel cable detection data including daily current load detection data; peak value extraction based on daily current load detection data to obtain daily current load peak value; daily current load maximum value analysis based on cable laying pipe distribution information to generate daily current load threshold value; determine whether the daily current load peak value meets the daily current load threshold value; if not, generate a first design instruction, perform cable additional analysis based on spare pipe distribution information, generate a cable additional plan; perform cable additional management according to the cable additional plan. Although it can solve the technical problem of insufficient accuracy of cable additional analysis in the prior art to a certain extent, since the plan is mainly for the arrangement of laid pipelines to set the cable laying plan, and there is not only one cable in the same channel, the cluster cables in the underground pipes can be equivalent to heat sources and magnetic fields when running, and the thermal effects between adjacent cables affect each other. Therefore, we cannot just focus on how to lay the cables, but need to comprehensively consider the impact of the cables to be laid on other cables in the same channel.

[0082] Summary of the problem:

[0083] After observing the construction process of the local distribution network and asking relevant personnel, we learned that at present, during the construction process, what needs to be considered is how to plan the laying of the lines and whether the laid cables will have an impact on the existing cables. The impact here refers to whether the cable's own anti-interference ability is exceeded, such as the thermal effect mentioned above, whether the surface temperature of other cables exceeds the normal temperature tolerance range of the cable. The existing cable laying scheme and laying analysis mainly study the various factors encountered during the laying process. However, since the factors that affect the working conditions of the cable are diverse, and the researchers, algorithms, and directions are different, these factors cannot be truly summarized, which is also a major problem that makes the scheme difficult to implement.

[0084] Technology R&D:

[0085] In order to solve the problems in actual use and to bring together the existing research, we decided to create a "carrier" that can carry the implementation plans of various factors. After analyzing and comparing the existing solutions on the market, we decided to use the existing "navigation system" as the carrier and utilize the route planning and screening functions of the "navigation system".

[0086] That is, the "navigation system" only needs to determine the "starting point" and "end point", as well as the existing "road" (using the laid pipeline as the "road") to plan and generate the route, and then substitute the various interference factors during cable laying into the "navigation system" to screen the route. As for the interference of the environment on the cable laying, a simulation method is used to detect it and obtain a comprehensive interference factor. At the same time, through research, a numerical value is set that can intuitively reflect the cable carrying capacity and the difficulty of cable laying. Only in this way can the abstract plan be converted into a comparable "numerical value".

[0087] Path generation:

[0088] This application is based on the existing navigation system. The starting point coordinates and the ending point coordinates of the pipeline to be added are used as the "starting point" and "end point" in the navigation system, and the paved channel is the "road" in the navigation system. The algorithm of the navigation system can be used to calculate the length of the cable to be laid (such as the length of the route in the navigation system) and the price corresponding to the length. The lowest cost amount can be selected based on the price, just like the highway toll standard in the navigation system. Just substitute the amount into the formula. In addition, the congestion of the channel is displayed according to the cables inside the laid channel, just like the route congestion displayed in the navigation system, and the geographical environment of the laid pipeline entered in the navigation system is used to calculate and select the optimal route, which greatly reduces the design difficulty of the cable extension system. The specific steps for generating the cable extension path are as follows:

[0089] Set the end point coordinates of the cable to be added and the working parameters of the cable to be added under use. Then select the laid cables and use the coordinates of the channel where the laid cables that meet the requirements for addition are the starting coordinates. The starting coordinates include the pipe mouth coordinates and node coordinates of the laid channel. The working parameters of the cable to be added under use include the daily load peak Q j , output voltage U0 and output current I0. The specific steps of screening are as follows:

[0090] First, retrieve the coordinates of all the channels and lines of the laid cables and the redundant loads of the corresponding lines, and compare the redundant loads of the corresponding lines with the peak daily loads of the cables to be added under the use status, so as to determine the carrying capacity of the laid cables, and generate the laying lines of the cables to be added with the coordinates of the channels where the cables that meet the standards (cables that can be added) are located as the starting coordinates;

[0091] If the redundant load of the line is less than or equal to the peak daily load Q of the cable to be added, j If , no response is given;

[0092] If the redundant load of the line is greater than the daily load peak value Q of the cable to be added j When the signal is met, a qualified signal is issued and the line is recorded as a line that can be added.

[0093] The starting point coordinates include the pipe mouth coordinates, node coordinates and line coordinates of the laid channel. The line coordinates are the coordinate set of each point on the surface of the laid channel. The price difference Scz of the additional cable length is calculated based on the starting point coordinates. L Select the pipe opening coordinates or line coordinates of the laid channel as the starting point coordinates of the cable additional path, based on the following formula:

[0094] ScZ L =(L g -L b )×S g -D g

[0095] Where, L g Indicates the length of the cable to be laid when the pipe mouth coordinates or node coordinates of the laid channel are used as the starting point coordinates, L b It indicates the length of the cable to be laid when the line coordinates of the laid channel are taken as the starting point coordinates, S g is the price per unit length of cable, D g It is the sum of the price of adding pipe openings and adding channels;

[0096] When the price difference Scz L When ≤0, the pipe opening coordinates (support point coordinates) of the laid channel are selected as the starting point coordinates of the cable extension path. During construction, workers arrive at the designated pipe opening or node, insert the cable to be added into the channel, and arrange it according to the generated cable extension path;

[0097] When the price difference Scz L When it is greater than 0, the line coordinates of the laid channel are selected as the starting coordinates of the cable additional path, and the nearest point is selected as the pipe opening setting point. Workers drill holes at the pipe opening setting point and install the pipe opening of the channel. After that, the point can be used as the cable entry point to insert the cable to be added into the channel and arrange it according to the generated cable additional path. Since the addition of pipe openings requires construction operations, the environment of the construction site is surveyed before construction (the specific situation depends on the on-site construction). The method of adding pipe openings is for channels where the distance between two adjacent pipe openings of the laid channel is greater than 50m, or when there is no pipe opening on the laid channel. When the distance between the pipe openings is less than 50m, the pipe opening coordinates are preferably used as the starting coordinates.

[0098] The selection of the "nearest point" takes the end point of the paved channel as the starting point, and the interval of 0.5-1m is a set point. The paved channel is divided into several set points, and then the price difference Scz is calculated based on each set point as the starting point L , select all price differences Scz L The maximum value of the price difference Scz L The corresponding set point is the "nearest point". Route optimization: Based on the geographical environment on the cable laying route and the number of cables already laid (analogous to the traffic congestion in the "navigation system"), the laying routes for additional cables are screened and the resulting routes are recorded as the cable additional paths.

[0099] Summarize:

[0100] By using the existing "navigation system" as a carrier and utilizing its own path specification function, a laying route that meets the needs is generated. Various factors that need to be paid attention to when laying cables are set as screening criteria to screen the planned paths. This makes the generated cable extension routes more accurate and convenient for actual implementation, avoiding staying on "paper". At the same time, it can also be compatible with the screening of different interference factors.

[0101] Cable status simulation:

[0102] There are three main parts: a load unit that can change the load size of the connected cable (a variable resistor can be used), a collection unit that can collect various working parameters of the cable when in use, and a voltage regulating and stabilizing unit that can keep the cable voltage constant; when the cable is in non-mimetic detection conditions, the collection unit begins to collect the working parameters of all cables in the channel where the additional path is located, and then the transmission unit uploads the collected cable working parameters; when the cable is in mimicry detection conditions, the load unit and the voltage regulating and stabilizing unit are additionally turned on to adjust the resistance of the connected cable line and the output voltage of the cable. During the entire detection process, the collection unit is in a normally open state and is constantly collecting data.

[0103] Detect the load redundancy working parameters of the additional cables, that is, the range that the additional cables can carry, build a calculation model that can calculate the redundancy, and calculate the redundancy value A of the additional cables R When obtaining the load redundancy working parameters, the set end point coordinates are used as the center of the circle, and the shortest distance between the addable cable and the end point coordinates is calculated according to the calculation formula from "point" to "straight line". Then, the addable cables are sorted from far to near, and the redundancy value A corresponding to the addable cables is generated. R The formula for generating the redundant value Ax of the additional cables is as follows:

[0104]

[0105] In the formula, Q d is the redundant load of the laid cables, U s is the redundant voltage of the laid cable, L z is the total length of the laid cables, σ and τ are the weight coefficients of the load redundancy of the laid cables and the power redundancy ratio of the laid cables, respectively, and 1≥σ>0,1>T>0; where A R >0, when A R ≤0, then delete the redundant value A R The corresponding cable.

[0106] By calculating the average load per unit cable length and the average power per unit cable length The residual load capacity and power carrying capacity of the cable can be intuitively obtained, and then the redundancy value A can be adjusted by the correction factor. R Filter range.

[0107] Among them, the correction coefficient δ x The initial value of is 0, so the correction coefficient δ does not need to be considered during the first detection. x , and then the cable load evaluation value Qckt obtained by testing q The comparison result with the preset comparison threshold range is then used to adjust the correction coefficient δ x Adjustment is made, and the correction factor δ x Always < 1, when the correction coefficient δ x =1, discard this adjustment;

[0108] Since the thermal resistance of the soil has an effect on the current, in order to avoid this effect, the redundant value A R Before calculation, the corresponding correction coefficient is retrieved according to the soil thermal resistance coefficient, and the current of the cable in use is corrected by the correction coefficient, and the obtained value is recorded as the output current I0. The correction coefficient of current carrying capacity for different soil thermal resistance coefficients is as follows:

[0109]

[0110] Note 1: The thermal resistivity of moist soil is 60-80 (referring to coastal areas, lakes, river areas and other areas with heavy rainfall, such as East China and South China).

[0111] 2. The thermal resistivity of ordinary soil is 120 (referring to plain areas, such as East China and North China).

[0112] 3. The thermal resistivity of dry soil is 160 to -200 (such as plateau areas, mountainous areas with little rainfall, hills, and dry areas).

[0113] Get the redundancy value A of the additional cablesR After that, the laid cables are sorted according to the distance L0 between the addable cables and the end point coordinates, and the corresponding working parameters of the laid cables are adjusted in sequence according to the sorted order. The working parameters of all cables in the channel where the additional path is located before and after the adjustment are recorded, and the cable status evaluation value Qpgt in the corresponding channel is generated according to the obtained working parameters. z , generate the cable status evaluation value Qpgt in the corresponding channel z The formula is as follows:

[0114]

[0115] In the formula, Q j0 is the daily load peak value of the nth laid cable before adjustment, Q jz is the adjusted daily load peak of the nth laid cable, A R0 is the redundancy value of the nth laid cable before adjustment, A Rz is the adjusted redundancy value of the nth laid cable, tex and lpg are the weight coefficients of the daily load peak change and the redundancy value change, respectively, and 1>tex>0, 1>lpg>0, lpg+tex=1, n={1, 2, ..., k}, k is a positive integer.

[0116] Get the average load per unit cable length and the corresponding unit length redundancy value A of all cables in the same channel R , superimpose them and divide them by the corresponding number of cables to get the cable status assessment value per unit length of cable.

[0117] For example, if there are three cables in a channel, the average load per unit cable length of the three cables and the corresponding unit length redundancy value A R The sum is equal to

[0118]

[0119]

[0120] In order to fully simulate the impact of the cable to be added on other cables in the same channel, we need to average all the working parameters of the cable to be added to other cables. The specific adjustment process is as follows:

[0121] According to the number of cables already laid on the cable extension route, n, the daily load peak value Q of the cables to be added under use status is calculated. j And the output voltage U0 is divided into corresponding quantities to obtain the daily load peak adjustment value

[0122] and output voltage adjustment value

[0123] According to the order, adjust the working parameters of the laid cables in turn, and record the working parameters before and after each adjustment. When the load added to the laid cable exceeds the maximum daily load peak that the cable can withstand, the maximum daily load peak of the cable shall be the adjusted maximum daily load peak.

[0124] Before adjusting the working parameters, the rated daily load peak and output voltage of the laid cables are retrieved, and the difference between the rated daily load peak and the actual daily load peak of the laid cables and the difference between the rated output voltage and the actual output voltage are calculated;

[0125] Peak load difference of the day ≥ And the output voltage difference ≥ If , no response is given;

[0126] Peak load difference of the day< And the output voltage difference < When the rated daily load peak or rated output voltage of the cable is used as the adjusted working parameter, the remaining amount of parameter adjustment is substituted into the working parameter of the next laid cable;

[0127] When all laid cables are adjusted and there is still some remaining amount for parameter adjustment, the remaining amount is discarded and marked as a section to be tested.

[0128] Cable carrying capacity assessment:

[0129] By retrieving and quantifying the cable status evaluation value Qpgt z And the working parameters of the cable to be added in use, calculate the cable load assessment value Qckt q , generate the cable load assessment value Qckt q The formula is as follows:

[0130]

[0131] Where U 0s is the rated voltage of the cable to be added, and G1 is the correction factor.

[0132] The cable load evaluation value Qckt is obtained q Compare with the preset comparison threshold range; if the cable load assessment value Qckt q Within the comparison threshold range or the cable load evaluation value Qckt q When it is greater than the comparison threshold range, no response is made and a laying plan is generated;

[0133] If the cable load assessment value Qckt qWhen it is less than the comparison threshold range, an early warning is issued and the corresponding load redundancy value A is retrieved. R and the working parameters of the cable to be added under use to generate the correction coefficient δ x , the correction coefficient δ x Substitute into the redundancy calculation model and recalculate the redundancy value A of the additional cables R .

[0134] Correction coefficient δ x The specific process of generation is as follows: when receiving an early warning, the load redundancy working parameters of the corresponding cable and the working parameters of the cable to be added in the use state are retrieved, and the redundancy value A of the cable that can be added is calculated respectively. R and the usage status value of the cable to be added, and compare the two;

[0135] Among them, when the redundancy value A of the cable can be added R > The usage status value of the cable to be added, then the correction factor On the contrary, when the redundancy value A of the cable can be increased R <The usage status value of the cable to be added, then the correction factor

[0136] When the correction factor δ x =1, the current adjustment is discarded.

[0137] Due to the usage status value and redundancy value A of the cable to be added R are all values ​​greater than 0, and the largest value is used as the denominator to ensure that the adjusted correction coefficient δ x <1, so the redundancy value A can be increased R The reason for adopting this method is to ensure that the screening criteria are always higher than the actual needs and avoid overload and other situations.

[0138] Estimated laying difficulty

[0139] According to the generated paving plan, a construction point is selected on the paved channel to obtain the environmental parameters around the construction point, including the flow of people D, power consumption Q, ambient temperature W and construction range M. Get the environmental interference value C on the additional route 环境 ,in Indicates the correction factor of the preset environmental interference value, D c , Q c , W c 、M c represents the weights of the passenger flow on the additional route, the power consumption on the additional route, the ambient temperature on the additional route and the construction scope (i.e., the scope around the construction point that needs to be blocked during construction), and D c >0,Qc >0,W c >0,M c >0, G2 is the correction coefficient.

[0140] The present application is not limited to these interference factors, but also includes traffic volume, power consumption period and interference range (i.e. the range of additional power supply lines), etc. In order to combine these factors, the present application also has an expansion unit that can enter new interference factors and their corresponding weights as needed.

[0141] Combined with the cable load assessment value Qckt q , generate the estimated value Spid of the laying difficulty of the laying scheme under the influence of environmental parameters c The formula is as follows:

[0142]

[0143] Where a1 and a2 are the preset proportional coefficients of the cable status evaluation value and the environmental interference index, respectively, and

[0144] a2>a1>0.

[0145] Through the assessment value of construction difficulty, we can intuitively understand the construction efficiency of each route, so as to plan the best construction strategy and improve construction efficiency.

[0146] After the installation of the cables to be added is completed, the operating parameters of all cables on the cable addition path are obtained and compared with their rated operating parameters;

[0147] Among them, when the working parameters of the added cable are within the rated working parameter range, a qualified result is output, and the added working parameters are compared with the rated working parameters once every 2-3 hours, and the detection is stopped after 15 days;

[0148] When the operating parameters of the added cable are not within the rated operating parameter range, a correction alarm is issued and maintenance personnel are dispatched to conduct on-site inspection and analysis. The results of the analysis are fed back to the generation of the additional cable path to adjust the standards for generating the additional cable path.

[0149] Example 2

[0150] Based on Example 1, the present application provides an additional analysis method based on cable detection data, the analysis method comprising:

[0151] Set the end point coordinates of the cable to be added and the working parameters of the cable to be added under use status, filter the laid cables, take the coordinates of the channel where the laid cables that meet the addition requirements are located as the starting point coordinates, and generate the cable addition path;

[0152] Obtain the load redundancy working parameters corresponding to the cables that can be added, build a redundancy calculation model, and calculate the redundancy value A of the cables that can be added R , and according to the distance L0 from the terminal coordinates to the additional cable, the redundancy value A is matched in ascending order. R Adjust the working parameters of the corresponding laid cables, record the working parameters of all cables in the channel where the additional path is located before and after the adjustment, and generate the cable status evaluation value Qpgt in the corresponding channel based on the obtained working parameters z ;

[0153] Among them, the mimicry module includes a load unit, a collection unit, a transmission unit and a voltage regulation and stabilization unit;

[0154] When the cable is in a non-mimetic detection condition, the collection unit and the transmission unit are triggered, the collection unit collects the working parameters of all cables in the channel where the additional path is located under the use status, and then the transmission unit uploads the collected cable working parameters;

[0155] When the cable is under the mimic detection condition, the load unit and the voltage regulating unit are triggered to adjust the resistance value of the access cable line and the output voltage of the cable;

[0156] Retrieve and quantify the cable status assessment value Qpgt z And the working parameters of the cable to be added in use state, generate the cable load assessment value Qckt q , and the obtained cable load assessment value Qckt q Comparing with a preset comparison threshold range;

[0157] If the cable load assessment value Qckt q Within the comparison threshold range or the cable load evaluation value Qckt q When it is greater than the comparison threshold range, no response is made and a laying plan is generated;

[0158] If the cable load assessment value Qckt q When it is less than the comparison threshold range, an early warning is issued, and the corresponding redundant working parameters and the working parameters of the cable to be added in the use state are retrieved to generate the correction coefficient δ x , the correction coefficient δ x Substitute into the redundancy calculation model and recalculate the redundancy value A of the additional cables R ;

[0159] According to the generated laying plan, a construction point is selected on the laid channel, and the environmental parameters around the construction point are obtained, and the cable load assessment value Qckt is combined with the cable load assessment value Qckt. q , generate the estimated value Spid of the laying difficulty of the laying scheme under the influence of environmental parameters c,Environmental parameters include human flow D, power consumption Q, ambient temperature W and construction scope M.

[0160] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An additional analysis system based on cable detection data, characterized in that: The analysis system includes: The path generation module sets the end point coordinates of the cable to be added and the working parameters of the cable to be added under the use status, and selects the laid cables according to the settings, and takes the coordinates of the channel where the laid cables that meet the requirements for the addition are located as the starting point coordinates to generate the cable addition path; The mimic module obtains the load redundancy working parameters corresponding to the cables that can be added, builds a redundancy calculation model, and calculates the redundancy value of the cables that can be added , and according to the distance from the end point coordinates to the additional cable The size of the redundancy value Adjust the working parameters of the corresponding laid cables, record the working parameters of all cables in the channel where the additional path is located before and after the adjustment, and generate an evaluation value of the cable status in the corresponding channel based on the obtained working parameters ; Among them, the mimicry module includes a load unit, a collection unit, a transmission unit and a voltage regulation and stabilization unit; When the cable is in a non-mimetic detection condition, the collection unit and the transmission unit are triggered, and the collection unit collects the working parameters of all cables in the channel where the additional path is located under the use status, and then the transmission unit uploads the collected working parameters; When the cable is under the mimic detection condition, the load unit and the voltage regulating unit are triggered to adjust the resistance value of the access cable line and the output voltage of the cable; Carrying assessment module, retrieve and quantify cable status assessment value As well as the working parameters of the cable to be added when in use, generate the cable load assessment value , and the cable load assessment value obtained is Comparing with a preset comparison threshold range; If the cable load is assessed Within the comparison threshold range or cable load assessment value When it is greater than the comparison threshold range, no response is made and a laying plan is generated; If the cable load is assessed When it is less than the comparison threshold range, an early warning is issued and the corresponding load redundancy value is retrieved. and the working parameters of the cable to be added under use to generate the correction coefficient , the correction coefficient Substitute the redundancy calculation model and recalculate the redundancy value of the additional cables ; The laying estimation module selects construction points on the laid channel according to the generated laying plan, obtains the environmental parameters around the construction point, and combines the cable load assessment value , generate an estimated value of the paving difficulty of the paving scheme under the influence of environmental parameters .

2. The additional analysis system based on cable detection data according to claim 1, characterized in that: The starting point coordinates include the pipe opening coordinates of the laid channel and the channel connection node coordinates. The working parameters of the cable to be added in use state include the daily load peak value. , output voltage and output current , the specific process of generating the cable additional path is as follows: Retrieve the coordinates of the channel line of the laid cables and the redundant load of the corresponding line, and compare the redundant load of the corresponding line with the daily load peak value of the cable to be added under the use status; If the redundant load of the line is less than or equal to the peak daily load of the cable to be added If , no response is given; If the redundant load of the line is greater than the peak daily load of the cable to be added When the line is qualified, a qualified signal is issued and the line is recorded as a line that can be added; The coordinates of the channel where the additional line is located are used as the starting coordinates to generate the laying route of the cable to be added; Obtain the price per unit length of cable, geographical environment, and number of laid cables, screen the laying routes for additional cables, and obtain the cable addition path.

3. The additional analysis system based on cable detection data according to claim 1, characterized in that: When obtaining the load redundancy working parameters, the shortest distance between the set end point coordinates and the end point coordinates is calculated, and the cables that can be added are sorted from near to far, and then the redundancy values ​​of the cables that can be added are generated in sequence. , generating redundancy values ​​for additional cables The formula used is as follows: In the formula, For redundant loads of the laid cables, is the redundant voltage of the laid cables, is the total length of the laid cables, are the weight coefficients of the redundant load of the laid cables and the redundant power ratio of the laid cables, respectively, and ;in, >0, when When ≤0, delete the redundant value The corresponding cable; Correction coefficient The initial value is 0, according to the cable load assessment value The correction coefficient is compared with the preset comparison threshold range. Adjustment is made and the correction factor Always <1; In the redundant value Before calculation, the corresponding correction coefficient is retrieved according to the thermal resistance coefficient of the soil where the cable is located. The current of the cable in use is corrected by the correction coefficient, and the value obtained is recorded as the output current. .

4. The additional analysis system based on cable detection data as claimed in claim 3, characterized in that: According to the distance between the additional cable and the end point coordinates The laid cables are sorted by their size, and the corresponding working parameters of the laid cables are adjusted in sequence to generate the cable status evaluation value in the corresponding channel. The formula used is as follows: In the formula, is the daily load peak value of the nth laid cable before adjustment, is the adjusted daily load peak of the nth laid cable, is the redundancy value of the nth laid cable before adjustment, is the redundancy value adjusted for the nth laid cable, are the weight coefficients of the daily load peak change and the redundancy value change, respectively, and , ,n= , k is a positive integer; The specific process of adjusting working parameters is as follows: According to the number of cables already laid on the cable extension route, the daily load peak value of the cables to be added under the use status is calculated. and output voltage Divide into corresponding quantities to obtain the daily load peak adjustment value and output voltage adjustment value ; According to the order, add the daily load peak adjustment value to the corresponding working parameters of the laid cables. and output voltage adjustment value , and record the working parameters before and after each adjustment.

5. The additional analysis system based on cable detection data as claimed in claim 4, characterized in that: Before adjusting the working parameters, the rated daily load peak and output voltage of the laid cables are retrieved, and the difference between the rated daily load peak and the actual daily load peak of the laid cables and the difference between the rated output voltage and the actual output voltage are calculated; Peak load difference of the day ≥ And the output voltage difference ≥ If , no response is given; Peak load difference of the day< And the output voltage difference < When the rated daily load peak or rated output voltage of the cable is used as the adjusted working parameter, it is marked as the section to be tested.

6. The additional analysis system based on cable detection data as claimed in claim 5, characterized in that: Generate cable load estimates The formula used is as follows: In the formula, is the rated voltage of the cable to be added, is the correction factor.

7. The additional analysis system based on cable detection data according to claim 6, characterized in that: Correction coefficient The specific process of generation is: when receiving the warning, the load redundancy working parameters of the corresponding cable and the working parameters of the cable to be added in the use state are retrieved, and the redundancy values ​​of the cables that can be added are calculated respectively. and the usage status value of the cable to be added, and then compare the two, and adjust the correction coefficient according to the comparison result ; Among them, when the redundancy value of the cable can be increased > The usage status value of the cable to be added, then the correction factor Otherwise, the correction coefficient .

8. The additional analysis system based on cable detection data according to claim 6, characterized in that: Environmental parameters include human flow D, power consumption Q, ambient temperature W and construction scope M. Get the environmental interference value on the additional route ,in Represents the correction factor of the preset environmental interference value, Respectively represent the weights of human flow, electricity consumption, ambient temperature and construction scope, and , is the correction factor; Generate a paving difficulty estimate The formula used is as follows: In the formula, are preset proportional coefficients of the cable status evaluation value and the environmental interference index, respectively, and .

9. The additional analysis system based on cable detection data according to claim 1, characterized in that: The analysis system also includes: Install the feedback module to obtain the working parameters of all cables on the cable extension path after the cables to be added are installed, and compare them with their own rated working parameters; Among them, when the working parameters of the added cable are within its rated working parameter range, a qualified result is output, and the comparison is performed every 2-3 hours, and the detection is stopped after 15 days; When the operating parameters of the added cable are not within the rated operating parameter range, a correction alarm is issued, maintenance personnel are dispatched for on-site inspection, and the path generation module is adjusted based on the results.

10. A cable detection data-based additional analysis method, using any system described in claim 1 to 9, characterized in that: The analytical method includes: Set the end point coordinates of the cable to be added and the working parameters of the cable to be added under the use status, screen the laid cables, take the coordinates of the channel where the laid cables that meet the addition requirements are located as the starting point coordinates, and generate the cable addition path; Obtain the load redundancy working parameters corresponding to the cables that can be added, build a redundancy calculation model, and calculate the redundancy value of the cables that can be added , and according to the distance from the end point coordinates to the additional cable , using the order from small to large and the redundant value Adjust the working parameters of the corresponding laid cables, record the working parameters of all cables in the channel where the additional path is located before and after the adjustment, and generate the cable status assessment value in the corresponding channel based on the obtained working parameters ; Among them, the mimicry module includes a load unit, a collection unit, a transmission unit and a voltage regulation and stabilization unit; When the cable is in a non-mimetic detection condition, the collection unit and the transmission unit are triggered, the collection unit collects the working parameters of all cables in the channel where the additional path is located under the use status, and then the transmission unit uploads the collected cable working parameters; When the cable is under the mimic detection condition, the load unit and the voltage regulating unit are triggered to adjust the resistance value of the access cable line and the output voltage of the cable; Retrieve and quantify cable condition assessment values As well as the working parameters of the cable to be added when in use, generate the cable load assessment value , and the cable load assessment value obtained is Comparing with a preset comparison threshold range; If the cable load is assessed Within the comparison threshold range or cable load assessment value When it is greater than the comparison threshold range, no response is made and a laying plan is generated; If the cable load is assessed When it is less than the comparison threshold range, an early warning is issued, and the corresponding redundant working parameters and the working parameters of the cable to be added in use are retrieved to generate a correction coefficient. , the correction coefficient Substitute the redundancy calculation model and recalculate the redundancy value of the additional cables ; According to the generated laying plan, select the construction point on the laid channel, obtain the environmental parameters around the construction point, and combine it with the cable load assessment value , generate an estimated value of the paving difficulty of the paving scheme under the influence of environmental parameters ,Environmental parameters include human flow D, power consumption Q, ambient temperature W and construction scope M.

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