Remote diagnosis system for box-type substation

Abstract

The invention relates to the technical field of box-type substations, and aims to solve the problems that an existing box-type substation abnormal fault diagnosis mode is limited and incomplete, and abnormal and fault diagnosis of a box-type substation cannot be accurately monitored and analyzed and timely and effective early warning prompt cannot be carried out. The invention discloses a remote diagnosis system for a box-type substation, which solves the problem that normal production and life, power utilization experience of a user and economic benefits are directly affected by abnormal power supply due to the fact that the power supply is abnormal and the electrical operation condition and fault occurrence condition of the box-type substation cannot be mastered exactly, and particularly discloses the remote diagnosis system for the box-type substation. The server is in communication connection with a data acquisition module, an electrical operation analysis module, a main body damage monitoring module, an operation state monitoring module, a remote diagnosis control module and a display terminal, and the box-type substation is comprehensively and accurately monitored and analyzed by adopting modes of formula calculation, data analysis, threshold comparison, abnormal information analysis and the like; and the operation efficiency of a power system and the stability of power supply are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of box-type substations, in particular to a remote diagnosis system for box-type substations. Background Art

[0002] The box-type substation is a kind of factory-prefabricated indoor and outdoor compact power distribution equipment that integrates high-voltage switchgear, distribution transformers and low-voltage distribution devices according to a certain wiring scheme. It organically combines the functions of high-voltage power receiving, transformer step-down, and low-voltage power distribution. It is installed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulated, fully enclosed, and movable steel structure box. It is mechatronic and fully enclosed, especially suitable for urban network construction and transformation. It is a new type of substation that has emerged after civil substations. Box-type substations are widely used in the field of urban power supply due to their flexible combination, small footprint, and short construction period.

[0003] Traditional box-type substation maintenance mainly relies on manual inspections, which has many disadvantages. On the one hand, manual inspections are inefficient, require a lot of time and manpower, and are difficult to achieve real-time monitoring of box-type substations. On the other hand, the professional level and experience of inspectors vary greatly, and the judgment of faults may be subjective and one-sided, which can easily lead to missed detection and misjudgment of faults. In addition, when a box-type substation fails, the operation and maintenance personnel usually need to spend a long time troubleshooting and repairing the fault, resulting in a long power supply interruption, affecting the user's power experience.

[0004] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing abnormal fault diagnosis methods of box-type substations are relatively limited and incomplete, and cannot accurately monitor and analyze the abnormalities and fault diagnosis of box-type substations and provide timely and effective early warning prompts, and cannot accurately grasp the electrical operation conditions and fault occurrence conditions of box-type substations, resulting in power supply abnormalities that directly affect the normal production and life, the user's electricity experience and economic benefits. Through data analysis, the electrical operation status, the degree of damage to the main body, and the overall operation signal status of the box-type substation are accurately monitored and analyzed, and early warning prompts are issued by triggering corresponding control operations, thereby realizing comprehensive abnormality and fault diagnosis of box-type substations, and a remote diagnosis system for box-type substations is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A remote diagnosis system for a box-type substation includes a server, wherein the server is communicatively connected with a data acquisition module, an electrical operation analysis module, a main body damage monitoring module, an operation status monitoring module, a remote diagnosis control module and a display terminal;

[0008] The data acquisition module is used to collect the electrical operation status information of the box-type substation, the damage status information of the box-type substation and the operation status information of the box-type substation, and send it to the electrical operation analysis module, the main body damage monitoring module and the operation status monitoring module through the server;

[0009] The electrical operation analysis module is used to receive the electrical operation status information of the box-type substation and perform electrical operation analysis and processing, thereby obtaining a severe warning signal, a moderate warning signal and a mild warning signal and sending them to the remote diagnosis control module;

[0010] The main body damage monitoring module is used to receive the damage status information of the box-type substation and perform damage status analysis and processing, thereby obtaining a severe damage feedback signal, a moderate damage feedback signal and a slight damage feedback signal and sending them to the remote diagnosis control module;

[0011] The operation status monitoring module is used to receive the operation status information of the box-type substation and perform operation status analysis and processing, thereby obtaining a normal operation status signal and an abnormal operation status signal, and sending the obtained abnormal operation status signal to the remote diagnosis control module;

[0012] The remote diagnosis control module is used to receive the severe warning signal directly sent by the electrical operation analysis module and the moderate warning signal and the mild warning signal sent through the server, to receive the severe damage feedback signal directly sent by the main damage monitoring module and the moderate damage feedback signal and the mild damage feedback signal sent through the server, to receive the abnormal operation status signal sent by the operation status monitoring module, and to perform abnormal data regulation and analysis processing, thereby triggering the first-level maintenance instruction, K1 alarm instruction, P1 alarm inspection instruction, P2 alarm inspection instruction and P3 alarm inspection instruction, and sending them to the display terminal for corresponding operation processing.

[0013] Further, the electrical operation status analysis and processing are carried out, and the specific execution steps are as follows:

[0014] Obtain the voltage in the electrical operation status information of the box-type substation within a period of time and mark it as U f The voltages at each time point are arranged in descending order, and the maximum voltage and the minimum voltage are selected and marked as U max , U min , according to the formula: The voltage fluctuation value UB is obtained, wherein f represents each time point within a period of time, and f=1, 2, ..., g, and U' represents the set reference voltage value stored in the system storage library;

[0015] Obtain the current in the electrical operation status information of the box-type substation within a period of time and mark it as I f The currents at each time point are arranged in descending order, and the maximum current and the minimum current are selected and marked as I max ,I min , according to the formula: Obtaining a current fluctuation value UI, wherein I' represents a set reference current value stored in a system storage library;

[0016] Obtain the frequency of the electrical operation status information of the box-type substation within a period of time, and perform mean analysis on the frequency at each time point to obtain the mean frequency F avg , and extract the set reference frequency from the system repository, recorded as F0, according to the formula: PF = |F avg -F0|, get the frequency deviation value PF;

[0017] The voltage fluctuation value, current fluctuation value and frequency deviation value in the electrical operation status information of the box-type substation within a period of time are calculated according to the formula: DYX=UB×λ1+IB×λ2+PF×λ3 to obtain the electrical operation coefficient DYX, wherein λ1, λ2 and λ3 represent the weight factors of the voltage fluctuation value, the current fluctuation value and the frequency deviation value, respectively, and λ1>λ2>λ3. The weight factor is used to balance the weight of each data in the formula calculation, thereby promoting the accuracy of the calculation result. The specific weight factor is reasonably set by those skilled in the art according to the actual situation.

[0018] The electrical operation coefficient threshold is set to YU1, and the electrical operation coefficient is compared with the electrical operation coefficient threshold. When the electrical operation coefficient is greater than the electrical operation coefficient threshold, a severe warning signal is generated. When the electrical operation coefficient is equal to the electrical operation coefficient threshold, a moderate warning signal is generated. When the electrical operation coefficient is less than the electrical operation coefficient threshold, a mild warning signal is generated.

[0019] Further, the damage status analysis is performed, and the specific execution steps are as follows:

[0020] Monitor the corrosion value, aging value, wear value, foreign matter adhesion value and dust value in the damage status information of the box-type substation over a period of time, and calibrate them as fush, lahu, mosu, yi zo and fece respectively. According to the formula: suh = fush*x1+lahu*x2+mosu*x3+yi zo*x4+fece*x5, the damage degree coefficient suh is obtained, wherein x1, x2, x3, x4 and x5 represent the weight coefficients of the corrosion value, aging value, wear value, foreign matter adhesion value and dust value respectively, and x1>x2>x3>x4>x5. The weight coefficient is used to balance the weight of each data in the formula calculation, so as to promote the accuracy of the calculation result. The specific weight factor is reasonably set by the technicians in this field according to the actual situation.

[0021] Three damage gradient comparison intervals of the damage degree coefficient are set, namely, the first gradient damage interval TD1, the second gradient damage interval TD2 and the third gradient damage interval TD3, and TD1 = A*TD2 = 2A*TD3, wherein TD1>TD2>TD3, A represents the multiple of the gradient, and the specific value of A is set by those skilled in the art in a specific box-type substation example;

[0022] When the damage degree coefficient is in the preset first gradient damage interval TD1, a severe damage feedback signal is generated; when the damage degree coefficient is in the preset second gradient damage interval TD2, a moderate damage feedback signal is generated; when the damage degree coefficient is in the preset third gradient damage interval TD3, a slight damage feedback signal is generated.

[0023] Further, the operation status analysis is performed, and the specific execution steps are as follows:

[0024] Obtain the vibration signal of the box-type substation within a period of time, and based on this, generate the vibration waveform of the box-type substation within a period of time through the specified software, overlap and compare the vibration waveform of the box-type substation within a period of time with the reference vibration waveform corresponding to the box-type substation stored in the system repository, and obtain the vibration overlap waveform length of the box-type substation within a period of time, recorded as ZL, and at the same time obtain the waveform length of the reference vibration waveform corresponding to the box-type substation, recorded as ZL0;

[0025] Extract the vibration peak value and vibration trough value from the vibration waveform of the box-type substation within a period of time, and mark them as ZF max , ZG min And extract the reference vibration peak value and reference vibration valley value from the reference vibration waveform corresponding to the box-type substation, marked as ZF0 and ZG0 respectively, according to the formula:

[0026] ZK=(ZL / ZL0)*y1+(1 / |ZF max -ZF0|+1)*y2+(1 / |ZG min -ZG0|+1)*y3, and obtain the vibration condition value ZK, wherein y1, y2, and y3 represent the correction factors corresponding to the overlapped waveform length, the vibration wave peak value difference, and the vibration wave valley value difference, respectively, and y1>y2>y3. The correction factor is used to correct the deviation of various parameters in the process of formula calculation, so as to calculate more accurate parameter data. The specific setting of the correction factor is reasonably set by those skilled in the art according to the actual situation;

[0027] Acquire the sound signal of the box-type substation within a period of time, and based on this, generate the sound spectrum of the box-type substation within a period of time through the specified software, compare and analyze the sound spectrum of the box-type substation within a period of time with the reference sound spectrum corresponding to the box-type substation stored in the system repository, and obtain the overlapping segments of each sound spectrum of the box-type substation within a period of time, extract each sound spectrum overlapping segment from the sound spectrum of the box-type substation within a period of time, and then obtain each abnormal sound spectrum segment of the box-type substation within a period of time, which is used as each abnormal sound of the box-type substation within a period of time, count the number of each abnormal sound of the box-type substation within a period of time, and obtain the number of abnormal sounds of the box-type substation within a period of time, marked as SYN, and extract the duration of each abnormal sound from the sound spectrum of the box-type substation within a period of time, marked as SYT i , i represents the number of each abnormal sound within a period of time, and i=1,2,....,n, according to the formula: The sound condition value YK is obtained, wherein z1 and z2 represent the correction factors corresponding to the number of abnormal sounds and the duration of each abnormal sound, respectively, and z1<z2. The correction factor is used to correct the deviation of various parameters in the calculation process of the formula, so as to calculate more accurate parameter data. The specific setting of the correction factor is reasonably set by those skilled in the art according to the actual situation;

[0028] Obtain the atmospheric ambient temperature outside the box-type substation for a period of time and calibrate it as wwd j And calculate the average value of the atmospheric ambient temperature at each monitoring point at each time according to the formula: Get the mean atmospheric environment temperature fwd, match the mean atmospheric environment temperature outside the box-type substation for a period of time with the atmospheric environment temperature corresponding to each set temperature influence value, get the temperature influence value outside the box-type substation for a period of time, and match the temperature influence value outside the box-type substation for a period of time with the temperature reference slope threshold inside the box-type substation corresponding to each set temperature influence value, get the temperature reference slope threshold inside the box-type substation for a period of time;

[0029] Get the temperature inside the box-type substation over a period of time and calibrate it as nwd j , j represents each time monitoring point within a period of time, and j = 1, 2, ...., m, with the time monitoring point as the horizontal coordinate and the temperature as the vertical coordinate, and a two-dimensional temperature dynamic coordinate system is established accordingly, and the temperature in the box-type substation within a period of time is plotted on the two-dimensional temperature dynamic coordinate system by drawing points, and the slope value between each temperature in the box-type substation and the origin within a period of time on the two-dimensional temperature dynamic coordinate system is obtained, and the temperature slope value in the box-type substation is compared and analyzed with the temperature reference slope threshold. When a temperature slope value in the box-type substation is greater than or less than the temperature reference slope threshold, the temperature is judged as an abnormal temperature, and the number of abnormal temperatures is obtained by statistics, according to the formula: Get the temperature difference value NW, where N 异 Expressed as the number of abnormal temperatures, N 总 It is expressed as the total number of temperatures, u1 and u2 are weight coefficients, and u2>u1. The weight coefficient is used to balance the weight of each data in the formula calculation, so as to promote the accuracy of the calculation result. The specific weight coefficient is reasonably set by those skilled in the art according to the actual situation.

[0030] The vibration value, sound value and temperature abnormal value in the monitoring signal status information of the box-type substation within a period of time are calculated according to the formula: The operation signal state value is obtained, wherein θ1, θ2 and θ3 are correction factors corresponding to the condition value, the sound condition value and the temperature condition value, respectively, and θ1<θ2<θ3. The correction factor is used to correct the deviation of each parameter in the formula calculation, so as to calculate more accurate parameter data. The specific setting of the correction factor is reasonably set by those skilled in the art according to the actual situation;

[0031] Set the threshold YU2 of the running signal status value, compare and analyze the running signal status value with the threshold of the running signal status value, and generate a normal running status signal when the running signal status value is greater than or equal to the threshold of the running signal status value; and generate an abnormal running status signal when the running signal status value is less than the threshold of the running signal status value.

[0032] Furthermore, abnormal data regulation and analysis are performed, and the specific execution steps are as follows:

[0033] When a severe warning signal is received from the electrical operation analysis module, a first-level maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the first-level maintenance instruction, a maintenance person will be assigned to perform maintenance operations within the set A1 time period;

[0034] When receiving the severe damage feedback signal sent by the main damage monitoring module, the K1 alarm command is triggered and sent to the display terminal. When the display terminal receives the K1 alarm command, it is necessary to quickly fence the box-type substation and arrange a no-approach warning within the B1 time period;

[0035] According to the abnormal operation status signal generated in the operation status monitoring module, the moderate warning signal and the mild warning signal in the electrical operation analysis module and the moderate damage feedback signal and the mild damage feedback signal in the main body damage monitoring module are retrieved;

[0036] When the moderate warning signal and the moderate damage feedback signal are captured at the same time, the P1 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P1 alarm maintenance instruction, it is necessary to quickly fence the box-type substation and prohibit approach warning arrangements within the Q1 time period, and assign maintenance personnel to go and perform maintenance operations within the set W1 time period;

[0037] When a moderate warning signal and a slight damage feedback signal or a slight warning signal and a moderate damage feedback signal are captured at the same time, the P2 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P2 alarm maintenance instruction, it is necessary to quickly fence the box-type substation and prohibit approach warning arrangements within the Q2 time period, and assign maintenance personnel to go and perform maintenance operations within the set W2 time period;

[0038] When a mild warning signal and a mild damage feedback signal are captured at the same time, the P3 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P3 alarm maintenance instruction, the box-type substation needs to be quickly fenced and prohibited from approaching within the Q3 time period, and maintenance personnel will be assigned to perform maintenance operations within the set W3 time period.

[0039] Beneficial effects of the present invention:

[0040] 1. The present invention obtains the voltage fluctuation value, current fluctuation value and frequency deviation value in the electrical operation status information of the box-type substation within a period of time and substitutes them into the formula for calculation and analysis, and analyzes the electrical operation status based on the threshold comparison method. When an electrical abnormality occurs in the box-type substation, it can promptly issue an early warning instruction to notify maintenance personnel to carry out maintenance, avoid further expansion and deterioration of the fault degree, and improve the timeliness of fault response and the operation and maintenance efficiency of the box-type substation.

[0041] 2. The present invention monitors the corrosion value, aging value, wear value, foreign matter attachment value and dust value in the damage degree information of the box-type substation over a period of time, and substitutes them into the formula for calculation and analysis and sets the gradient comparison interval for analysis and processing, thereby achieving a comprehensive and accurate judgment of the main damage degree of the box-type substation, and issuing different levels of alarm instructions and processing time requirements according to the damage degree, so that the operation and maintenance personnel can reasonably arrange their work according to the actual situation, thereby improving the pertinence and effectiveness of the work.

[0042] 3. The present invention obtains the vibration signal, sound signal and temperature signal in the operating status information of the box-type substation within a period of time for analysis to obtain the vibration value, sound value and temperature abnormal value of the box-type substation, and then substitutes them into the formula for calculation and analysis. At the same time, the operating status is analyzed based on the threshold comparison method, which realizes a comprehensive analysis of the abnormal operation of the box-type substation. When an abnormal signal occurs, the operation and maintenance personnel can be reminded in time to take corresponding measures, thereby improving the safety and stability of the operation of the box-type substation.

[0043] 4. The present invention further analyzes and processes the electrical operation status and the degree of damage to the main body by analyzing the abnormal data of the box-type substation operation signal, providing strong data support for the diagnosis of abnormal and fault conditions of the box-type substation, and reducing the time and cost of manual inspections. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 As shown, the present invention is a remote diagnosis system for a box-type substation, including a server, and the server is communicatively connected with a data acquisition module, an electrical operation analysis module, a main body damage monitoring module, an operation status monitoring module, a remote diagnosis control module and a display terminal.

[0048] The data acquisition module is used to collect the electrical operation status information of the box-type substation, the damage status information of the box-type substation and the operation status information of the box-type substation, and send it to the electrical operation analysis module, the main body damage monitoring module and the operation status monitoring module through the server;

[0049] When the electrical operation analysis module receives the electrical operation status information of the box-type substation, it performs electrical operation analysis and processing accordingly. The specific execution steps are as follows:

[0050] Obtain the voltage in the electrical operation status information of the box-type substation within a period of time and mark it as U f The voltages at each time point are arranged in descending order, and the maximum voltage and the minimum voltage are selected and marked as U max , U min , according to the formula: The voltage fluctuation value UB is obtained, wherein f represents each time point within a period of time, and f=1, 2, ..., g, U' represents the set reference voltage value stored in the system storage library; g represents the total number of each time point, and the value is a positive integer;

[0051] Obtain the current in the electrical operation status information of the box-type substation within a period of time and mark it as I f The currents at each time point are arranged in descending order, and the maximum current and the minimum current are selected and marked as I max ,I min , according to the formula: Obtaining a current fluctuation value UI, wherein I' represents a set reference current value stored in a system storage library;

[0052] Obtain the frequency of the electrical operation status information of the box-type substation within a period of time, and perform mean analysis on the frequency at each time point to obtain the mean frequency F avg , and extract the set reference frequency from the system repository, recorded as F0, according to the formula: PF = |F avg -F0|, get the frequency deviation value PF;

[0053] The voltage fluctuation value, current fluctuation value and frequency deviation value in the electrical operation status information of the box-type substation within a period of time are calculated according to the formula: DYX=UB×λ1+IB×λ2+PF×λ3 to obtain the electrical operation coefficient DYX, wherein λ1, λ2 and λ3 represent the weight factors of the voltage fluctuation value, the current fluctuation value and the frequency deviation value, respectively, and λ1>λ2>λ3. The weight factor is used to balance the weight of each data in the formula calculation, thereby promoting the accuracy of the calculation result. The specific weight factor is reasonably set by those skilled in the art according to the actual situation.

[0054] The electrical operation coefficient threshold is set to YU1, and the electrical operation coefficient is compared with the electrical operation coefficient threshold. When the electrical operation coefficient is greater than the electrical operation coefficient threshold, a severe warning signal is generated; when the electrical operation coefficient is equal to the electrical operation coefficient threshold, a moderate warning signal is generated; and when the electrical operation coefficient is less than the electrical operation coefficient threshold, a mild warning signal is generated.

[0055] The generated data is directly sent to the remote diagnosis control module for abnormal data regulation and analysis. The moderate warning signal and the mild warning signal are sent to the remote diagnosis control module through the server for abnormal data regulation and analysis. Specifically:

[0056] When a severe warning signal is received, a first-level maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the first-level maintenance instruction, a maintenance personnel will be assigned to perform maintenance operations within the set A1 time period.

[0057] When the main damage monitoring module receives the damage status information of the box-type substation, it performs damage status analysis and processing accordingly. The specific execution steps are as follows:

[0058] Monitor the corrosion value, aging value, wear value, foreign matter adhesion value and dust value in the damage status information of the box-type substation over a period of time, and calibrate them as fush, lahu, mosu, yi zo and fece respectively. According to the formula: suh = fush*x1+lahu*x2+mosu*x3+yi zo*x4+fece*x5, the damage degree coefficient suh is obtained, wherein x1, x2, x3, x4 and x5 represent the weight coefficients of the corrosion value, aging value, wear value, foreign matter adhesion value and dust value respectively, and x1>x2>x3>x4>x5. The weight coefficient is used to balance the weight of each data in the formula calculation, so as to promote the accuracy of the calculation result. The specific weight factor is reasonably set by the technicians in this field according to the actual situation.

[0059] It should be noted that the corrosion value indicates the total area of ​​the main corrosion area of ​​the box-type substation within a period of time, the aging value indicates the total area of ​​the main aging area of ​​the box-type substation within a period of time, the wear value indicates the total area of ​​the main wear area of ​​the box-type substation within a period of time, the foreign matter adhesion value indicates the total area covered by foreign matter in the main body of the box-type substation within a period of time, and the dust value indicates the amount of dust contained in the air inside the box-type substation within a period of time;

[0060] Three damage gradient comparison intervals of the damage degree coefficient are set, namely, the first gradient damage interval TD1, the second gradient damage interval TD2 and the third gradient damage interval TD3, and TD1 = A*TD2 = 2A*TD3, wherein TD1>TD2>TD3, A represents the multiple of the gradient, and the specific value of A is set by those skilled in the art in a specific box-type substation example;

[0061] When the damage degree coefficient is in the preset first gradient damage interval TD1, a severe damage feedback signal is generated; when the damage degree coefficient is in the preset second gradient damage interval TD2, a moderate damage feedback signal is generated; when the damage degree coefficient is in the preset third gradient damage interval TD3, a slight damage feedback signal is generated;

[0062] The generated severe damage feedback signal is directly sent to the remote diagnosis control module for abnormal data regulation and analysis processing, and the moderate damage feedback signal and the light damage feedback signal are sent to the remote diagnosis control module through the server for abnormal data regulation and analysis processing. Specifically:

[0063] When a severe damage feedback signal is received, the K1 alarm command is triggered and sent to the display terminal. When the display terminal receives the K1 alarm command, it is necessary to quickly fence the box-type substation and arrange a no-approach warning within the B1 time period;

[0064] When the operation status monitoring module receives the operation status information of the box-type substation, it performs operation status analysis and processing accordingly. The specific execution steps are as follows:

[0065] Obtain the vibration signal of the box-type substation within a period of time, and based on this, generate the vibration waveform of the box-type substation within a period of time through the specified software, overlap and compare the vibration waveform of the box-type substation within a period of time with the reference vibration waveform corresponding to the box-type substation stored in the system repository, and obtain the vibration overlap waveform length of the box-type substation within a period of time, recorded as ZL, and at the same time obtain the waveform length of the reference vibration waveform corresponding to the box-type substation, recorded as ZL0;

[0066] It should be noted that the designated software is specifically vibration analysis software;

[0067] Extract the vibration peak value and vibration trough value from the vibration waveform of the box-type substation within a period of time, and mark them as ZF max , ZG min And extract the reference vibration peak value and reference vibration valley value from the reference vibration waveform corresponding to the box-type substation, marked as ZF0 and ZG0 respectively, according to the formula:

[0068] ZK=(ZL / ZL0)*y1+(1 / |ZF max -ZF0|+1)*y2+(1 / |ZG min -ZG0|+1)*y3, and obtain the vibration condition value ZK, wherein y1, y2, and y3 represent the correction factors corresponding to the overlapped waveform length, the vibration wave peak value difference, and the vibration wave valley value difference, respectively, and y1>y2>y3. The correction factor is used to correct the deviation of various parameters in the process of formula calculation, so as to calculate more accurate parameter data. The specific setting of the correction factor is reasonably set by those skilled in the art according to the actual situation;

[0069] Acquire the sound signal of the box-type substation within a period of time, and based on this, generate the sound spectrum of the box-type substation within a period of time through the specified software, compare and analyze the sound spectrum of the box-type substation within a period of time with the reference sound spectrum corresponding to the box-type substation stored in the system repository, and obtain the overlapping segments of each sound spectrum of the box-type substation within a period of time, extract each sound spectrum overlapping segment from the sound spectrum of the box-type substation within a period of time, and then obtain each abnormal sound spectrum segment of the box-type substation within a period of time, which is used as each abnormal sound of the box-type substation within a period of time, count the number of each abnormal sound of the box-type substation within a period of time, and obtain the number of abnormal sounds of the box-type substation within a period of time, marked as SYN, and extract the duration of each abnormal sound from the sound spectrum of the box-type substation within a period of time, marked as SYT i , i represents the number of each abnormal sound within a period of time, and i=1,2,....,n, n represents the total number of each abnormal sound; according to the formula: The sound condition value YK is obtained, wherein z1 and z2 represent the correction factors corresponding to the number of abnormal sounds and the duration of each abnormal sound, respectively, and z1<z2. The correction factor is used to correct the deviation of various parameters in the calculation process of the formula, so as to calculate more accurate parameter data. The specific setting of the correction factor is reasonably set by those skilled in the art according to the actual situation;

[0070] It should be noted that the designated software is specifically spectrum analysis software;

[0071] Obtain the atmospheric ambient temperature outside the box-type substation for a period of time and calibrate it as wwd j And calculate the average value of the atmospheric ambient temperature at each monitoring point at each time according to the formula: Get the mean atmospheric environment temperature fwd, match the mean atmospheric environment temperature outside the box-type substation for a period of time with the atmospheric environment temperature corresponding to each set temperature influence value, get the temperature influence value outside the box-type substation for a period of time, and match the temperature influence value outside the box-type substation for a period of time with the temperature reference slope threshold inside the box-type substation corresponding to each set temperature influence value, get the temperature reference slope threshold inside the box-type substation for a period of time;

[0072] Get the temperature inside the box-type substation over a period of time and calibrate it as nwd j , j represents each time monitoring point within a period of time, and j = 1, 2, ...., m, m is the total number of each time monitoring point, the value is a positive integer, the time monitoring point is used as the horizontal coordinate, the temperature is used as the vertical coordinate, and a two-dimensional temperature dynamic coordinate system is established accordingly, and the temperature in the box-type substation within a period of time is plotted on the two-dimensional temperature dynamic coordinate system by drawing points, and the slope value between each temperature in the box-type substation and the origin within a period of time on the two-dimensional temperature dynamic coordinate system is obtained, and the temperature slope value in the box-type substation is compared and analyzed with the temperature reference slope threshold. When a temperature slope value in the box-type substation is greater than or less than the temperature reference slope threshold, the temperature is determined to be an abnormal temperature, and the number of abnormal temperatures is obtained by statistics, according to the formula: Get the temperature difference value NW, where N 异 Expressed as the number of abnormal temperatures, N 总 It is expressed as the total number of temperatures, u1 and u2 are weight coefficients, and u2>u1. The weight coefficient is used to balance the weight of each data in the formula calculation, so as to promote the accuracy of the calculation result. The specific weight coefficient is reasonably set by those skilled in the art according to the actual situation.

[0073] The vibration value, sound value and temperature abnormal value in the monitoring signal status information of the box-type substation within a period of time are calculated according to the formula: The operation signal state value is obtained, wherein θ1, θ2 and θ3 are correction factors corresponding to the condition value, the sound condition value and the temperature condition value, respectively, and θ1<θ2<θ3. The correction factor is used to correct the deviation of each parameter in the formula calculation, so as to calculate more accurate parameter data. The specific setting of the correction factor is reasonably set by those skilled in the art according to the actual situation;

[0074] A threshold value YU2 of the running signal state value is set, and the running signal state value is compared and analyzed with the threshold value of the running signal state value. When the running signal state value is greater than or equal to the threshold value of the running signal state value, a normal running state signal is generated; when the running signal state value is less than the threshold value of the running signal state value, an abnormal running state signal is generated;

[0075] The generated abnormal operation status signal is sent to the remote diagnosis control module through the server for abnormal data regulation and analysis. Specifically:

[0076] According to the abnormal operation status signal generated in the operation status monitoring module, the moderate warning signal and the mild warning signal in the electrical operation analysis module and the moderate damage feedback signal and the mild damage feedback signal in the main body damage monitoring module are retrieved;

[0077] When the moderate warning signal and the moderate damage feedback signal are captured at the same time, the P1 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P1 alarm maintenance instruction, it is necessary to quickly fence the box-type substation and prohibit approach warning arrangements within the Q1 time period, and assign maintenance personnel to go and perform maintenance operations within the set W1 time period;

[0078] When a moderate warning signal and a slight damage feedback signal or a slight warning signal and a moderate damage feedback signal are captured at the same time, the P2 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P2 alarm maintenance instruction, it is necessary to quickly fence the box-type substation within the Q2 time period and assign maintenance personnel to perform maintenance operations within the set W2 time period;

[0079] When a mild warning signal and a mild damage feedback signal are captured at the same time, the P3 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P3 alarm maintenance instruction, it is necessary to quickly set up a regional fence around the box-type substation within the Q3 time period to prohibit approaching, and assign maintenance personnel to perform maintenance operations within the set W3 time period;

[0080] It should be noted that the severity level of the triggered alarm maintenance instruction is P1>P2>P3, the length of time for which the box-type substation needs to be fenced and prohibited from approaching is Q1<Q2<Q3, and the set time for assigning maintenance personnel to go and perform maintenance operations is W1<W2<W3.

[0081] When the present invention is used, by obtaining the voltage fluctuation value, current fluctuation value and frequency deviation value in the electrical operation status information of the box-type substation within a period of time and substituting them into the formula for calculation and analysis, and analyzing the electrical operation status according to the threshold comparison method, it is possible to timely issue an early warning instruction to notify maintenance personnel to carry out maintenance when an electrical abnormality occurs in the box-type substation, thereby avoiding further expansion and deterioration of the fault degree, and improving the timeliness of fault response and the operation and maintenance efficiency of the box-type substation;

[0082] By monitoring the corrosion value, aging value, wear value, foreign matter adhesion value and dust value in the damage degree information of the box-type substation over a period of time, and substituting them into the formula for calculation and analysis and setting the gradient comparison interval for analysis and processing, it is possible to comprehensively and accurately determine the damage degree of the main body of the box-type substation, and issue different levels of alarm instructions and processing time requirements according to the damage degree, so that the operation and maintenance personnel can reasonably arrange their work according to the actual situation, improving the pertinence and effectiveness of the work;

[0083] By obtaining the vibration signal, sound signal and temperature signal in the operating status information of the box-type substation within a period of time, the vibration value, sound value and temperature abnormal value of the box-type substation are obtained, and then substituted into the formula for calculation and analysis. At the same time, the operating status is analyzed based on the threshold comparison method, which realizes a comprehensive analysis of the abnormal operation of the box-type substation. When an abnormal signal occurs, the operation and maintenance personnel can be reminded in time to take corresponding measures, thereby improving the safety and stability of the operation of the box-type substation;

[0084] By analyzing the abnormal data of the box-type substation operation signal, the electrical operation status and the degree of damage to the main body were analyzed and processed again, providing strong data support for the diagnosis of abnormal and fault conditions of the box-type substation, reducing the time and cost of manual inspections.

[0085] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A remote diagnostic system for a box-type substation, characterized in that: It includes a server, which is connected to a data acquisition module, an electrical operation analysis module, a main body damage monitoring module, an operation status monitoring module, a remote diagnosis control module and a display terminal; The data acquisition module is used to collect the electrical operation status information of the box-type substation, the damage status information of the box-type substation and the operation status information of the box-type substation, and send it to the electrical operation analysis module, the main body damage monitoring module and the operation status monitoring module through the server; The electrical operation analysis module is used to receive the electrical operation status information of the box-type substation and perform electrical operation analysis and processing, thereby obtaining a severe warning signal, a moderate warning signal and a mild warning signal and sending them to the remote diagnosis control module; The main body damage monitoring module is used to receive the damage status information of the box-type substation and perform damage status analysis and processing, thereby obtaining a severe damage feedback signal, a moderate damage feedback signal and a slight damage feedback signal and sending them to the remote diagnosis control module; The operation status monitoring module is used to receive the operation status information of the box-type substation and perform operation status analysis and processing, thereby obtaining a normal operation status signal and an abnormal operation status signal, and sending the obtained abnormal operation status signal to the remote diagnosis control module; The remote diagnosis control module is used to receive the severe warning signal directly sent by the electrical operation analysis module and the moderate warning signal and the mild warning signal sent through the server, to receive the severe damage feedback signal directly sent by the main damage monitoring module and the moderate damage feedback signal and the mild damage feedback signal sent through the server, to receive the abnormal operation status signal sent by the operation status monitoring module, and to perform abnormal data regulation and analysis processing, thereby triggering the first-level maintenance instruction, K1 alarm instruction, P1 alarm inspection instruction, P2 alarm inspection instruction and P3 alarm inspection instruction, and sending them to the display terminal for corresponding operation processing.

2. The remote diagnosis system for a box-type substation according to claim 1 is characterized in that: The electrical operation status analysis and processing is specifically performed in the following steps: Obtain the voltage in the electrical operation status information of the box-type substation within a period of time, and arrange the voltage at each time point in order from large to small, filter out the maximum voltage and the minimum voltage, and perform normalization analysis to obtain the voltage fluctuation value; Obtain the current in the electrical operation status information of the box-type substation within a period of time, and arrange the current at each time point in order from large to small, filter out the maximum current and the minimum current, and perform normalization processing and analysis to obtain the current fluctuation value; Obtain the frequency in the electrical operation status information of the box-type substation within a period of time, and perform mean analysis on the frequency at each time point to obtain the mean frequency, and extract the set reference frequency from the system repository, and perform comprehensive analysis to obtain the frequency deviation value; The voltage fluctuation value, current fluctuation value and frequency deviation value in the electrical operation status information of the box-type substation within a period of time are comprehensively analyzed to obtain the electrical operation coefficient; The electrical operation coefficient threshold is set to YU1, and the electrical operation coefficient is compared with the electrical operation coefficient threshold. When the electrical operation coefficient is greater than the electrical operation coefficient threshold, a severe warning signal is generated. When the electrical operation coefficient is equal to the electrical operation coefficient threshold, a moderate warning signal is generated. When the electrical operation coefficient is less than the electrical operation coefficient threshold, a mild warning signal is generated.

3. The remote diagnosis system for a box-type substation according to claim 1 is characterized in that: The damage degree status analysis process is specifically performed in the following steps: Monitor the corrosion value, aging value, wear value, foreign matter adhesion value and dust value in the damage status information of the box-type substation over a period of time, and conduct a comprehensive analysis to obtain the damage degree coefficient; Three damage gradient comparison intervals of the damage degree coefficient are set, namely, the first gradient damage interval TD1, the second gradient damage interval TD2 and the third gradient damage interval TD3, and TD1=A*TD2=2A*TD3, wherein TD1>TD2>TD3, and A represents the multiple of the gradient; When the damage degree coefficient is in the preset first gradient damage interval TD1, a severe damage feedback signal is generated; when the damage degree coefficient is in the preset second gradient damage interval TD2, a moderate damage feedback signal is generated; when the damage degree coefficient is in the preset third gradient damage interval TD3, a slight damage feedback signal is generated.

4. The remote diagnosis system for a box-type substation according to claim 1, characterized in that: The specific steps of performing the running status analysis are as follows: Obtain the vibration signal of the box-type substation within a period of time, and based on this, generate the vibration waveform of the box-type substation within a period of time through the specified software, overlap and compare the vibration waveform of the box-type substation within a period of time with the reference vibration waveform corresponding to the box-type substation stored in the system repository, obtain the vibration overlap waveform length of the box-type substation within a period of time, and at the same time obtain the waveform length of the reference vibration waveform corresponding to the box-type substation; Extract the vibration peak value and vibration trough value from the vibration waveform of the box-type substation within a period of time, and extract the reference vibration peak value and reference vibration trough value from the reference vibration waveform corresponding to the box-type substation, and perform comprehensive analysis to obtain the vibration condition value; Acquire the sound signal of the box-type substation within a period of time, and based on this, generate the sound spectrum diagram of the box-type substation within a period of time through the specified software, compare and analyze the sound spectrum diagram of the box-type substation within a period of time with the reference sound spectrum diagram corresponding to the box-type substation stored in the system repository, and obtain the overlapping segments of each sound spectrum of the box-type substation within a period of time, extract each sound spectrum overlapping segment from the sound spectrum diagram of the box-type substation within a period of time, and then obtain each abnormal sound spectrum segment of the box-type substation within a period of time, thereby taking this as each abnormal sound of the box-type substation within a period of time, counting the number of each abnormal sound of the box-type substation within a period of time, and obtaining the number of abnormal sounds of the box-type substation within a period of time, and extracting the duration of each abnormal sound from the sound spectrum diagram of the box-type substation within a period of time, thereby performing a comprehensive analysis to obtain the sound condition value; Obtain the atmospheric environment temperature outside the box-type substation within a period of time, and calculate the average atmospheric environment temperature of each monitoring point at each time to obtain the average atmospheric environment temperature, match the average atmospheric environment temperature outside the box-type substation within a period of time with the atmospheric environment temperature corresponding to each set temperature influence value, and obtain the temperature influence value outside the box-type substation within a period of time, and match the temperature influence value outside the box-type substation within a period of time with the temperature reference slope threshold inside the box-type substation corresponding to each set temperature influence value, and obtain the temperature reference slope threshold inside the box-type substation within a period of time; Obtain the temperature in the box-type substation within a period of time, with the time monitoring point as the horizontal coordinate and the temperature as the vertical coordinate, and establish a two-dimensional temperature dynamic coordinate system based on this, and plot the temperature in the box-type substation within a period of time on the two-dimensional temperature dynamic coordinate system by plotting points, obtain the slope value between each temperature in the box-type substation and the origin in the two-dimensional temperature dynamic coordinate system within a period of time, and compare and analyze the temperature slope value in the box-type substation with the temperature reference slope threshold. When a temperature slope value in the box-type substation is greater than or less than the temperature reference slope threshold, the temperature is determined to be an abnormal temperature, and the number of abnormal temperatures is obtained by statistics, and normalization processing is performed to obtain temperature abnormality values; Comprehensively analyze the vibration value, sound value, and temperature abnormality in the monitoring signal status information of the box-type substation over a period of time to obtain the operating signal status value; Set the threshold YU2 of the running signal status value, compare and analyze the running signal status value with the threshold of the running signal status value, and generate a normal running status signal when the running signal status value is greater than or equal to the threshold of the running signal status value; and generate an abnormal running status signal when the running signal status value is less than the threshold of the running signal status value.

5. The remote diagnosis system for box-type substation according to claim 1, characterized in that: The specific steps of performing abnormal data control analysis are as follows: When a severe warning signal is received from the electrical operation analysis module, a first-level maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the first-level maintenance instruction, a maintenance person will be assigned to perform maintenance operations within the set A1 time period; When receiving the severe damage feedback signal sent by the main damage monitoring module, the K1 alarm command is triggered and sent to the display terminal. When the display terminal receives the K1 alarm command, it is necessary to quickly fence the box-type substation and arrange a no-approach warning within the B1 time period; According to the abnormal operation status signal generated in the operation status monitoring module, the moderate warning signal and the mild warning signal in the electrical operation analysis module and the moderate damage feedback signal and the mild damage feedback signal in the main body damage monitoring module are retrieved; When the moderate warning signal and the moderate damage feedback signal are captured at the same time, the P1 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P1 alarm maintenance instruction, it is necessary to quickly fence the box-type substation and prohibit approach warning arrangements within the Q1 time period, and assign maintenance personnel to go and perform maintenance operations within the set W1 time period; When a moderate warning signal and a slight damage feedback signal or a slight warning signal and a moderate damage feedback signal are captured at the same time, the P2 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P2 alarm maintenance instruction, it is necessary to quickly fence the box-type substation and prohibit approach warning arrangements within the Q2 time period, and assign maintenance personnel to go and perform maintenance operations within the set W2 time period; When a mild warning signal and a mild damage feedback signal are captured at the same time, the P3 alarm maintenance instruction is triggered and sent to the display terminal. When the display terminal receives the P3 alarm maintenance instruction, the box-type substation needs to be quickly fenced and prohibited from approaching within the Q3 time period, and maintenance personnel will be assigned to perform maintenance operations within the set W3 time period.

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