A distribution cabinet operation supervision system

Abstract

The present invention relates to the technical field of power distribution cabinet equipment supervision, and in particular to a power distribution cabinet operation supervision system, including a data acquisition module for acquiring power distribution information, power distribution cabinet parameters and power distribution cabinet historical information, a data analysis module for analyzing the power distribution cabinet operation parameters and classifying the safety levels of various circuits in the power distribution cabinet, a circuit analysis module for analyzing the operation status of each circuit, an overall analysis module for analyzing the overall operation status of the power distribution cabinet and adjusting the analysis process of the overall operation status of the power distribution cabinet, a power distribution management module for generating a management plan for the next monitoring cycle and outputting the management plan to a user, and a management update module for updating the process of generating a management plan for the next management cycle. The present invention effectively improves the efficiency of the supervision of the operation status of the power distribution cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinet equipment supervision, and in particular to a power distribution cabinet operation supervision system. Background Art

[0002] With the continuous development of the power system, the requirements for the stability and safety of distribution cabinets are getting higher and higher. Traditional distribution cabinet supervision mostly relies on manual regular inspections, which is not only inefficient, but also difficult to detect and handle sudden faults in real time. Therefore, it is particularly important to develop a distribution cabinet operation supervision system that can achieve real-time monitoring, fault warning and remote management.

[0003] Chinese Patent Publication No.: CN117040138A discloses a dynamic safety assessment system for the operation of a distribution cabinet, including a processor, a distribution cabinet sampling module, a multi-component item-by-item monitoring module, a distribution cabinet overall decision module and a background visual early warning terminal; the present invention uses the distribution cabinet sampling module to analyze and determine whether to generate a scrap signal for the corresponding distribution cabinet, so that the management personnel can scrap the corresponding distribution cabinet in time, reduce the subsequent operation risk and reduce the safety hazard, and analyze the operation status of each internal component of the distribution cabinet that has not generated a scrap signal one by one to generate a multi-component monitoring qualified signal or a multi-component monitoring unqualified signal, and perform an overall decision analysis on the distribution cabinet corresponding to the multi-component monitoring qualified signal, thereby generating a decision normal signal or a decision abnormal signal, to achieve a comprehensive assessment of the dynamic safety of the distribution cabinet, the assessment result is highly accurate, and the operation safety and stability of the distribution cabinet are effectively guaranteed; it can be seen that the invention only judges and analyzes the safe state of the operation of the distribution cabinet, does not efficiently supervise the operation process of the distribution cabinet, and has the problem of low efficiency in supervising the operation state of the distribution cabinet. Summary of the invention

[0004] To this end, the present invention provides a distribution cabinet operation monitoring system to overcome the problem of low efficiency in monitoring the operation status of the distribution cabinet in the prior art.

[0005] To achieve the above object, the present invention provides a distribution cabinet operation monitoring system, comprising:

[0006] The data acquisition module is used to obtain power distribution information in real time, and is also used to obtain power distribution cabinet parameters and power distribution cabinet historical information;

[0007] The data analysis module is used to analyze the operating parameters of the distribution cabinet according to the altitude of the distribution cabinet installation area and the distribution cabinet parameters, and is also used to classify the safety level of each circuit in the distribution cabinet according to the distribution cabinet historical information and the distribution cabinet operating parameters;

[0008] The circuit analysis module is used to analyze the operating status of each circuit according to the power distribution information within the monitoring period and the safety level of each circuit;

[0009] The overall analysis module is used to analyze the overall operation status of the power distribution cabinet according to the analysis results of the operation status of each circuit, and is also used to adjust the analysis process of the overall operation status of the power distribution cabinet according to the parameters of the power distribution cabinet;

[0010] The power distribution management module is used to generate a management plan for the next monitoring period based on the analysis results of the circuit operation status and the overall operation status of the power distribution cabinet during the monitoring period, and output the management plan to the user;

[0011] The management update module is used to update the process of generating a management plan for the next management cycle based on the analysis results of the overall operating status of the distribution cabinet in each monitoring cycle within the management cycle.

[0012] Furthermore, the data analysis module is provided with an altitude analysis unit, which is used to compare the altitude h of the distribution cabinet installation area with each preset altitude, and analyze the distribution cabinet operation parameters according to the comparison result and the distribution cabinet parameters, wherein:

[0013] When 2000≤h

[0014] When H1≤h<H2, the altitude analysis unit sets the actual maximum load power of each circuit to Ps2(i), and sets Ps2(i)=Ie(i)×Ue×[1-sin(h / 2000)] / cosΦ;

[0015] When h≥H2, the altitude analysis unit sets the actual maximum load power of each circuit to Ps3(i), and sets Ps3(i)=Ie(i)×Ue×(1-h / 2000) / cosΦ;

[0016] Wherein, i=1, 2...n1, n1 is the number of circuits, Ie(i) is the rated current of the ith circuit of the distribution cabinet, Ue is the rated voltage of the distribution cabinet, H1 is the first preset altitude, cosΦ is the power factor, Φ is the phase difference between the voltage and current of the distribution cabinet, and H2 is the second preset altitude.

[0017] Furthermore, the data analysis module is also provided with a safety level division unit, which is used to compare the historical load average value PE(i) of each circuit with the actual maximum load power Psj(i) of each circuit, and divide the safety level of each circuit in the distribution cabinet according to the comparison result, setting j=1, 2, 3, where:

[0018] ​When PE(i)≤Psj(i)×a1, the safety level classification unit determines that the safety level of the circuit is level one;

[0019] When Psj(i)×a1<PE(i)≤Psj(i)×a2, the safety level classification unit determines that the safety level of the circuit is level 2;

[0020] When PE(i)>Psj(i)×a2, the safety level classification unit determines that the safety level of the loop is level three;

[0021] Wherein, a1 is the first preset safety factor, a2 is the second preset safety factor, 0<a1<a2<1.2;

[0022] The data analysis module is further provided with a first adjustment unit, which is used to compare the number of triggering times n2(i) of the protection components of each circuit with the triggering times threshold M, and adjust the process of classifying the safety levels of each circuit in the power distribution cabinet according to the comparison result, wherein:

[0023] When n2(i)<M, the first adjustment unit determines that the number of times the protection component of the circuit is triggered is normal and does not make any adjustment;

[0024] When n2(i)≥M, the first adjustment unit determines that the number of triggering times of the protection component of the circuit is abnormal, and adjusts the second preset safety factor to a2', setting a2'=a2×{1-[n2(i)-M] / M}.

[0025] Furthermore, the loop analysis module is provided with a loop load analysis unit, and the loop load analysis unit is used to analyze load abnormality according to the load power P(i) and the safety level of each loop, wherein:

[0026] When the loop safety level is level one, if P(i) < Psj(i) × b1, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b1, the loop load analysis unit determines that the loop load is abnormal;

[0027] When the loop safety level is level 2, if P(i) < Psj(i) × b2, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b2, the loop load analysis unit determines that the loop load is abnormal;

[0028] When the loop safety level is level three, if P(i) < Psj(i) × b3, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b1, the loop load analysis unit determines that the loop load is abnormal;

[0029] Wherein, b1 is the first safety load factor, b2 is the second safety load factor, b3 is the third safety load factor, 1.2>b1>b2>b3>0;

[0030] The loop analysis module is further provided with a current analysis unit, which analyzes the current abnormality of each loop according to the load current I(i) of each loop and the rated current Ie(i) of each loop, wherein:

[0031] When I(i)<Ie(i)×η, the current analysis unit determines that the current of the loop is normal;

[0032] When I(i)≥Ie(i)×η, the current analysis unit determines that the current of the loop is abnormal.

[0033] Furthermore, the loop analysis module is further provided with an abnormality analysis unit, which analyzes the abnormal operation state of each loop within the monitoring period according to the analysis results of the load abnormality and the current abnormality of each loop, wherein:

[0034] When c1×A1(i) / B+c2×A2(i) / B<C, the abnormality analysis unit determines that the operation state of the circuit within the monitoring period is normal;

[0035] When c1×A1(i) / B+c2×A2(i) / B≥C, the abnormality analysis unit determines that the operation state of the loop within the monitoring period is abnormal;

[0036] Among them, c1 is the load weight value, c2 is the current weight value, c1>c2 and c1+c2=1, A1(i) is the duration of the load abnormality of the i-th circuit during the monitoring period, B is the duration of the monitoring period, and C is the preset abnormality index.

[0037] Furthermore, the overall analysis module is provided with an overall abnormality analysis unit, and the overall abnormality analysis unit is used to analyze the overall operation status of the power distribution cabinet according to the abnormal analysis status of each circuit;

[0038] The overall abnormality analysis unit counts the number of circuits n3 in which the abnormal operation state of each circuit of the power distribution cabinet is abnormal during the monitoring period, and calculates the abnormality ratio α according to the statistical result, and sets α=n3 / n1;

[0039] The overall abnormality analysis unit compares the abnormality ratio α with the preset abnormality ratio Y, and analyzes the overall operating state of the power distribution cabinet according to the comparison result, wherein:

[0040] When α<Y, the overall abnormality analysis unit determines that the overall operating state of the power distribution cabinet within the monitoring period is normal;

[0041] When α≥Y, the overall abnormality analysis unit determines that the overall operation of the power distribution cabinet is abnormal during the monitoring period.

[0042] Furthermore, the overall analysis module is also provided with an overall load adjustment unit, which calculates the total output power PW and the carrying power PC of the distribution cabinet according to the distribution cabinet parameters. The calculation formulas of the total output power PW and the carrying power PC are as follows:

[0043]

[0044]

[0045] Where S is the cross-sectional area of ​​the wire at the input end of the distribution cabinet, k is the conductivity of the wire, and L is the wire length of the wire at the input end of the distribution cabinet;

[0046] The overall load adjustment unit compares the total output power PW with the carrying power PC during the monitoring period, and analyzes the load state of the distribution cabinet according to the comparison result. The overall load adjustment unit is also used to adjust the analysis process of the overall operating state according to the load state of the distribution cabinet, wherein:

[0047] When PW<PC, the overall analysis unit determines that the load of the power distribution cabinet is normal within the monitoring period and does not make any adjustment;

[0048] When PW≥PC, the overall analysis unit determines that the load of the distribution cabinet is abnormal within the monitoring period, and adjusts the preset abnormal ratio to Y', setting Y'=Y×{1-2 / π×arctan[(PW-PC) / PC]}.

[0049] Furthermore, the overall analysis module is further provided with an optimization unit, which is used to compare the heat convection heat dissipation power t within the monitoring period with each heat convection heat dissipation power, and optimize the adjustment process of the overall operating state according to the comparison result, wherein:

[0050] When t<T1, the optimization unit determines that the heat dissipation power in the monitoring period is low, and adjusts the carrying power PC to PC', setting PC'=PC×cosΦ×(T1-t) / T1;

[0051] When T1≤t<T2, the optimization unit determines that the heat dissipation is normal within the monitoring period and does not perform optimization;

[0052] When t≥T2, the optimization unit determines that the heat dissipation power is high during the monitoring period, and optimizes the carrying power PC to PC", setting PC"=PC×cosΦ×exp[(T2-t) / T1];

[0053] Wherein, T1 is a first preset thermal convection heat dissipation power, T2 is a second preset thermal convection heat dissipation power, and T1<T2.

[0054] Furthermore, the power distribution management module generates a management plan for the next monitoring cycle according to the loop operation status analysis results and the overall operation status analysis results of the power distribution cabinet within the monitoring cycle, wherein:

[0055] When the overall operation status is normal, if the operation status of the i-th circuit is normal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring cycle to D1(i), and sets D1(i)=D0(i); if the operation status of the i-th circuit is abnormal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring cycle to D2(i), and sets The power distribution management module uses the number of wires in each circuit in the next monitoring cycle as the management plan for the next monitoring cycle;

[0056] When the overall operation state is abnormal and g(i) / B<β, the power distribution management module sets the number of wires at the input end of the power distribution cabinet to F1, and sets F1=PW×L / (Ue 2 ×k), at this time, if the operating status of each i-th circuit is normal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring period to D3(i), setting D3(i) = D0(i); if the operating status of the i-th circuit is abnormal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring period to D4, setting The power distribution management module uses the number of wires in each circuit and the number of wires at the input end of the power distribution cabinet in the next monitoring period as the management plan for the next monitoring period;

[0057] When the overall operating status is abnormal and g(i) / B≥β, the power distribution management module will "recommend the user to re-layout and inspect the power distribution cabinet" as the management plan for the next monitoring cycle;

[0058] The power distribution management module outputs the management plan for the next monitoring cycle to the user;

[0059] Among them, D0(i) is the number of wires in the i-th circuit in the current monitoring period, g(i) is the duration of abnormal load of the distribution cabinet during the monitoring period, and β is the preset load duration ratio.

[0060] Further, the management update module updates the process of generating a management plan for the next management cycle according to the analysis results of the overall operation status of the power distribution cabinet in each monitoring cycle within the management cycle;

[0061] The management update module counts the proportion of monitoring periods γ in which the overall operation status of the power distribution cabinet is normal within the management period, sets γ=n4 / N, and compares γ with the preset normal proportion V. The management update module updates the management process of the number of input wires and the number of wires in each loop in the next management period according to the comparison result, wherein:

[0062] When γ≤V, the management update module recommends that the user re-layout and check the power distribution cabinet;

[0063] When V≤γ<V×r, the management update module updates the preset load duration ratio of the next management cycle to β', and sets β'=β×sin[V×(1-r)];

[0064] When γ≥V×r, the management update module does not perform update;

[0065] Where r is the buffer coefficient, 1<r≤1.5, and N is the number of monitoring cycles within the management cycle.

[0066] Compared with the prior art, the beneficial effect of the present invention lies in that the data acquisition module improves the accuracy of data acquisition by acquiring the information required by the system, thereby improving the accuracy of the maximum load power analysis of each circuit in high-altitude areas, thereby improving the accuracy of the safety level division of each circuit, thereby improving the accuracy of the analysis of the circuit operation status and the overall operation status, and ultimately improving the efficiency of the operation status supervision of the distribution cabinet. The data analysis module analyzes the operation parameters of the distribution cabinet and divides the safety level of each circuit, thereby improving the accuracy of the maximum load power analysis of each circuit in high-altitude areas, thereby improving the accuracy of the analysis of the circuit operation status and the overall operation status, thereby improving the accuracy of the management of the distribution cabinet in the next monitoring cycle, and ultimately improving the efficiency of the operation status supervision of the distribution cabinet. The circuit analysis module performs load analysis on the real-time acquired distribution information, and analyzes the load abnormality according to the analysis results, thereby improving the accuracy of the circuit operation status analysis. The accuracy of the management of the distribution cabinet in the next monitoring cycle is improved, and the efficiency of the supervision of the operation status of the distribution cabinet is finally improved. The overall operation status of the distribution cabinet is analyzed by the overall analysis module, which improves the accuracy of the overall operation status analysis, and then improves the accuracy of the management of the distribution cabinet in the next monitoring cycle, and finally improves the efficiency of the supervision of the operation status of the distribution cabinet. The distribution management module generates a management plan for the next monitoring cycle based on the analysis results of the circuit operation status of the distribution cabinet and the overall operation status analysis results within the monitoring cycle, which improves the accuracy of the management of the distribution cabinet in the next monitoring cycle, and finally improves the efficiency of the supervision of the operation status of the distribution cabinet. The overall operation status analysis results of the distribution cabinets in each monitoring cycle within the management cycle are updated by the management update module for the process of generating a management plan for the next management cycle, which improves the accuracy of the overall operation status analysis, and then improves the accuracy of the management of the distribution cabinet in the next monitoring cycle, and finally improves the efficiency of the supervision of the operation status of the distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 This is a schematic diagram of the structure of the power distribution cabinet operation supervision system of this embodiment;

[0068] Figure 2 This is a structural diagram of the data analysis module of this embodiment;

[0069] Figure 3 Schematic diagram of the structure of the loop analysis module of this embodiment;

[0070] Figure 4 Schematic diagram of the structure of the overall analysis module of this embodiment. DETAILED DESCRIPTION

[0071] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0072] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0073] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] See also Figure 1 As shown, it is a structural diagram of the distribution cabinet operation supervision system of this embodiment, including:

[0075] A data acquisition module is used to acquire power distribution information in real time, and is also used to acquire power distribution cabinet parameters and power distribution cabinet historical information; the power distribution information includes the load power and load current of each circuit; the power distribution cabinet parameters include the number of circuits, the rated power of the power distribution cabinet, the power factor, the calculated current of the power distribution cabinet and the rated current of each circuit; the power distribution cabinet historical information includes the historical load average value of each circuit and the number of times the protection components of each circuit are triggered; in this embodiment, no specific limitation is made on the acquisition method of power distribution information, power distribution cabinet parameters and power distribution cabinet historical information, and technical personnel in this field can freely set it, and only need to meet the acquisition requirements of power distribution information, power distribution cabinet parameters and power distribution cabinet historical information, such as obtaining power distribution information through voltage monitoring equipment and current monitoring equipment in the power distribution cabinet, obtaining power distribution cabinet parameter information through user interactive input, and obtaining power distribution cabinet historical information through the power distribution cabinet historical database;

[0076] A data analysis module is used to analyze the operating parameters of the distribution cabinet according to the altitude of the distribution cabinet installation area and the distribution cabinet parameters, and is also used to classify the safety level of each circuit in the distribution cabinet according to the distribution cabinet historical information and the distribution cabinet operating parameters. The data analysis module is connected to the data acquisition module; the distribution cabinet operating parameters include the actual maximum load power of each circuit;

[0077] A loop analysis module is used to analyze the operating status of each loop according to the power distribution information within the monitoring period and the safety level of each loop. The loop analysis module is connected to the data analysis module. In this embodiment, the value of the monitoring period should meet the condition that it can be divided by 24 hours. Those skilled in the art can set it freely as long as it meets the value requirements of the monitoring period. For example, the monitoring period can be set to 4 hours, 6 hours, 8 hours, etc.

[0078] An overall analysis module, used to analyze the overall operation state of the power distribution cabinet according to the operation state analysis results of each circuit, and also used to adjust the analysis process of the overall operation state of the power distribution cabinet according to the parameters of the power distribution cabinet, and the overall analysis module is connected to the circuit analysis module;

[0079] A power distribution management module, used to generate a management plan for the next monitoring period according to the analysis results of the circuit operation status and the overall operation status of the power distribution cabinet within the monitoring period, and output the management plan to the user, the power distribution management module is connected to the overall analysis module and the circuit analysis module;

[0080] A management update module is used to update the process of generating a management plan for the next management cycle according to the analysis results of the overall operating status of the distribution cabinet in each monitoring period within the management cycle. The management update module is connected to the distribution management module. In this embodiment, no specific limitation is made to the value of the management cycle, and technical personnel in this field can set it freely as long as the value requirements of the management cycle are met. In this embodiment, the value requirement of the management cycle is that the length of the management cycle is an integer multiple of 24 hours, such as the management cycle can be set to 5 days, 6 days, 7 days, etc.

[0081] See also Figure 2 As shown, it is a structural diagram of the data analysis module of this embodiment, including:

[0082] An altitude analysis unit is used to analyze the operating parameters of the distribution cabinet according to the altitude of the distribution cabinet installation area and the distribution cabinet parameters;

[0083] A safety level division unit, used for dividing the safety level of each circuit in the power distribution cabinet according to the analysis results of the operation parameters of the power distribution cabinet and the historical load average value of each circuit, and the safety level division unit is connected to the altitude analysis unit;

[0084] The first adjustment unit is used to adjust the process of classifying the safety levels of each circuit in the distribution cabinet according to the number of times the protection components of each circuit are triggered. The first adjustment unit is connected to the safety level classification unit.

[0085] See also Figure 3 As shown, it is a schematic diagram of the structure of the loop analysis module of this embodiment, including:

[0086] A circuit load analysis unit is used to analyze load abnormality according to load power and safety level of each circuit;

[0087] A current analysis unit is used to analyze the current abnormality of each circuit according to the load current of each circuit and the parameters of the distribution cabinet;

[0088] The abnormality analysis unit is used to analyze the abnormal operation state of each circuit within the monitoring period according to the analysis results of the load abnormality and the current abnormality of each circuit. The abnormality analysis unit is connected to the circuit load analysis unit and the current analysis unit.

[0089] See also Figure 4 As shown, it is a schematic diagram of the structure of the overall analysis module of this embodiment, including:

[0090] The overall abnormality analysis unit is used to analyze the overall operating status of the power distribution cabinet according to the abnormal analysis status of each circuit;

[0091] An overall load adjustment unit, used to analyze the load status of the distribution cabinet according to the power distribution information, and to adjust the analysis process of the overall operation status according to the load status of the distribution cabinet, the overall load adjustment unit being connected to the overall abnormality analysis unit;

[0092] The optimization unit is used to optimize the adjustment process of the overall operation state according to the heat convection heat dissipation power within the monitoring period, and the optimization unit is connected to the overall load analysis unit.

[0093] Specifically, the distribution cabinet operation supervision system described in this embodiment is applied to the operation monitoring and management of low-voltage distribution cabinets in high-altitude areas; in this embodiment, the high-altitude areas refer to areas with an altitude of more than 2000 meters; this embodiment analyzes the operating parameters of the distribution cabinet through the historical information and altitude of the distribution cabinet, and analyzes the operating status of each circuit in the cabinet and the overall operating status according to the operating parameter analysis results, and then manages the distribution cabinet according to the analysis results, thereby improving the efficiency of supervising the operating status of the distribution cabinet.

[0094] Specifically, the altitude analysis unit compares the altitude h of the distribution cabinet installation area with each preset altitude, and analyzes the distribution cabinet operation parameters according to the comparison result and the distribution cabinet parameters, wherein:

[0095] When 2000≤h

[0096] ​When H1≤h<H2, the altitude analysis unit sets the actual maximum load power of each circuit to Ps2(i), and sets Ps2(i)=Ie(i)×Ue×[1-sin(h / 2000)] / cosΦ;

[0097] When h≥H2, the altitude analysis unit sets the actual maximum load power of each circuit to Ps3(i), and sets Ps3(i)=Ie(i)×Ue×(1-h / 2000) / cosΦ;

[0098] Wherein, i=1, 2...n1, n1 is the number of circuits, Ie(i) is the rated current of the i-th circuit of the distribution cabinet, Ue is the rated voltage of the distribution cabinet, H1 is the first preset altitude, cosΦ is the power factor, Φ is the phase difference between the voltage and current of the distribution cabinet, H2 is the second preset altitude, 2000

[0099] Specifically, the altitude analysis unit analyzes the altitude of the distribution cabinet installation area, and analyzes the distribution cabinet operating parameters according to the analysis results and the distribution cabinet parameters, thereby improving the accuracy of the maximum load power analysis of each circuit in the high altitude area, and then improving the accuracy of the safety level classification of each circuit, thereby improving the accuracy of the analysis of the circuit operating status and the overall operating status, and ultimately improving the efficiency of the distribution cabinet operating status supervision; it can be understood that in this embodiment, there is no specific limitation on the values ​​of the first preset altitude H1 and the second preset altitude H2, and it is only necessary to meet the value requirements of the first preset altitude H1 and the second preset altitude H2, such as the first preset altitude H1 can be set to 2900 meters, and the second preset altitude H2 can be set to 3900 meters.

[0100] Specifically, the safety level division unit compares the historical load average value PE(i) of each circuit with the actual maximum load power Psj(i) of each circuit, and divides the safety level of each circuit in the distribution cabinet according to the comparison result, setting j=1, 2, 3, where:

[0101] When PE(i)≤Psj(i)×a1, the safety level classification unit determines that the safety level of the circuit is level one;

[0102] When Psj(i)×a1<PE(i)≤Psj(i)×a2, the safety level classification unit determines that the safety level of the circuit is level 2;

[0103] When PE(i)>Psj(i)×a2, the safety level classification unit determines that the safety level of the loop is level three;

[0104] ​Wherein, a1 is the first preset safety factor, a2 is the second preset safety factor, and 0<a1<a2<1.2.

[0105] Specifically, the safety level division unit improves the accuracy of the analysis of the circuit operation status and the overall operation status by dividing the safety levels of each circuit, thereby improving the accuracy of the management of the distribution cabinet in the next monitoring cycle, and finally improving the efficiency of the supervision of the operation status of the distribution cabinet; it can be understood that in this embodiment, the safety level of level one represents that the safety status of the circuit is safe, the safety level of level two represents that the safety status of the circuit is risky, and the safety level of level three represents that the safety status of the circuit is dangerous; in this embodiment, there is no specific limitation on the values ​​of the first preset safety factor a1 and the second preset safety factor a2, and technical personnel in this field can set them freely, as long as the value requirements of the first preset safety factor a1 and the second preset safety factor a2 are met, such as the first preset safety factor a1 can be set to 0.9, and the second preset safety factor a2 can be set to 1.1.

[0106] Specifically, the first adjustment unit compares the triggering times n2(i) of the protection components of each circuit with the triggering times threshold M, and adjusts the process of classifying the safety levels of each circuit in the power distribution cabinet according to the comparison result, wherein:

[0107] When n2(i)<M, the first adjustment unit determines that the number of times the protection component of the circuit is triggered is normal and does not make any adjustment;

[0108] When n2(i)≥M, the first adjustment unit determines that the number of triggering times of the protection component of the circuit is abnormal, and adjusts the second preset safety factor to a2', setting a2'=a2×{1-[n2(i)-M] / M}.

[0109] Specifically, the first adjustment unit analyzes the number of times the protection components of each circuit are triggered, and adjusts the process of dividing the safety levels of each circuit in the distribution cabinet according to the analysis results, thereby improving the accuracy of the analysis of the circuit operation status and the overall operation status, thereby improving the accuracy of the management of the distribution cabinet in the next monitoring cycle, and ultimately improving the efficiency of the supervision of the operation status of the distribution cabinet; it can be understood that in this embodiment, the value of the triggering number threshold M is not specifically limited, and technical personnel in this field can set it freely, as long as the value requirements of the triggering number threshold M are met, such as the triggering number threshold M can be set to 3.

[0110] Specifically, the loop load analysis unit analyzes load abnormality according to the load power P(i) and the safety level of each loop, wherein:

[0111] When the loop safety level is level one, if P(i) < Psj(i) × b1, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b1, the loop load analysis unit determines that the loop load is abnormal;

[0112] When the loop safety level is level 2, if P(i) < Psj(i) × b2, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b2, the loop load analysis unit determines that the loop load is abnormal;

[0113] When the loop safety level is level three, if P(i) < Psj(i) × b3, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b1, the loop load analysis unit determines that the loop load is abnormal;

[0114] Wherein, b1 is the first safety load factor, b2 is the second safety load factor, b3 is the third safety load factor, and 1.2>b1>b2>b3>0.

[0115] Specifically, the loop load analysis unit performs load analysis on the power distribution information obtained in real time, and analyzes the load abnormality according to the analysis results, thereby improving the accuracy of the loop operation status analysis, thereby improving the accuracy of the distribution cabinet management in the next monitoring cycle, and ultimately improving the efficiency of the distribution cabinet operation status supervision; it can be understood that in this embodiment, there is no specific limitation on the values ​​of the first safety load factor b1, the second safety load factor b2 and the third safety load factor b3, and technical personnel in this field can set them freely, as long as the value requirements of the first safety load factor b1, the second safety load factor b2 and the third safety load factor b3 are met. For example, the first safety load factor b1 can be set to 1.19, the second safety load factor b2 can be set to 1, and the third safety load factor b3 can be set to 0.9.

[0116] Specifically, the current analysis unit analyzes the current abnormality of each circuit according to the load current I(i) of each circuit and the rated current Ie(i) of each circuit, wherein:

[0117] When I(i)<Ie(i)×η, the current analysis unit determines that the current of the loop is normal;

[0118] When I(i)≥Ie(i)×η, the current analysis unit determines that the current of the loop is abnormal;

[0119] Wherein, η is the current operation coefficient, 0.9≤η≤1.1.

[0120] Specifically, the current analysis unit analyzes the load current of each circuit and analyzes the current abnormality of each circuit based on the analysis results, thereby improving the accuracy of the circuit operation status analysis, thereby improving the accuracy of the distribution cabinet management in the next monitoring cycle, and ultimately improving the efficiency of the distribution cabinet operation status supervision; in this embodiment, the optimal value of the current operation coefficient η is 1.1.

[0121] Specifically, the abnormality analysis unit will analyze the abnormal operation state of each circuit within the monitoring period according to the analysis results of the load abnormality and the current abnormality of each circuit, wherein:

[0122] When c1×A1(i) / B+c2×A2(i) / B<C, the abnormality analysis unit determines that the operation state of the circuit within the monitoring period is normal;

[0123] When c1×A1(i) / B+c2×A2(i) / B≥C, the abnormality analysis unit determines that the operation state of the loop within the monitoring period is abnormal;

[0124] Among them, c1 is the load weight value, c2 is the current weight value, c1>c2 and c1+c2=1, A1(i) is the duration of the load abnormality of the i-th circuit during the monitoring period, B is the duration of the monitoring period, and C is the preset abnormality index.

[0125] Specifically, the abnormal analysis unit improves the accuracy of the analysis of the circuit operation status by analyzing the abnormal operation status of each circuit within the monitoring period, thereby improving the accuracy of the management of the distribution cabinet in the next monitoring period, and ultimately improving the efficiency of the supervision of the operation status of the distribution cabinet; it can be understood that in this embodiment, no specific limitation is made to the values ​​of the load weight value c1, the current weight value c2 and the preset abnormal index C, and technical personnel in this field can set them freely, as long as the value requirements of the load weight value c1, the current weight value c2 and the preset abnormal index C are met. For example, the load weight value c1 can be set to 0.6, the current weight value c2 can be set to 0.4, and the preset abnormal index C can be set to 10%.

[0126] Specifically, the overall abnormality analysis unit analyzes the overall operating status of the power distribution cabinet according to the abnormality analysis status of each circuit;

[0127] The overall abnormality analysis unit counts the number of circuits n3 in which the abnormal operation state of each circuit of the power distribution cabinet is abnormal during the monitoring period, and calculates the abnormality ratio α according to the statistical result, and sets α=n3 / n1;

[0128] The overall abnormality analysis unit compares the abnormality ratio α with the preset abnormality ratio Y, and analyzes the overall operating state of the power distribution cabinet according to the comparison result, wherein:

[0129] When α<Y, the overall abnormality analysis unit determines that the overall operating state of the power distribution cabinet within the monitoring period is normal;

[0130] When α≥Y, the overall abnormality analysis unit determines that the overall operation of the power distribution cabinet is abnormal during the monitoring period.

[0131] Specifically, the overall abnormality analysis unit improves the accuracy of the overall operating status analysis by analyzing the overall operating status of the distribution cabinet, thereby improving the accuracy of the distribution cabinet management in the next monitoring cycle, and ultimately improving the efficiency of the distribution cabinet operating status supervision; in this embodiment, the value of the preset abnormality ratio Y is not specifically limited, and technical personnel in this field can set it freely, as long as the value requirements of the preset abnormality ratio Y are met, such as the preset abnormality ratio Y can be set to 1%.

[0132] Specifically, the overall load adjustment unit calculates the total output power PW and the carrying power PC of the distribution cabinet according to the distribution cabinet parameters. The calculation formulas of the total output power PW and the carrying power PC are as follows:

[0133]

[0134]

[0135] Where S is the cross-sectional area of ​​the wire at the input end of the distribution cabinet, k is the conductivity of the wire, and L is the wire length of the wire at the input end of the distribution cabinet;

[0136] The overall load adjustment unit compares the total output power PW with the carrying power PC during the monitoring period, and analyzes the load state of the distribution cabinet according to the comparison result. The overall load adjustment unit is also used to adjust the analysis process of the overall operating state according to the load state of the distribution cabinet, wherein:

[0137] When PW<PC, the overall analysis unit determines that the load of the power distribution cabinet is normal within the monitoring period and does not make any adjustment;

[0138] When PW≥PC, the overall analysis unit determines that the load of the distribution cabinet is abnormal within the monitoring period, and adjusts the preset abnormal ratio to Y', setting Y'=Y×{1-2 / π×arctan[(PW-PC) / PC]}.

[0139] Specifically, the overall load adjustment unit calculates the total output power and carrying power of the distribution cabinet, and analyzes the load status of the distribution cabinet based on the calculation results. The overall load adjustment unit also adjusts the analysis process of the overall operating status according to the load status of the distribution cabinet, thereby improving the accuracy of the overall operating status analysis, thereby improving the accuracy of the distribution cabinet management in the next monitoring cycle, and ultimately improving the efficiency of the distribution cabinet operation status supervision.

[0140] Specifically, the optimization unit compares the heat convection heat dissipation power t within the monitoring period with each heat convection heat dissipation power, and optimizes the adjustment process of the overall operating state according to the comparison result, wherein:

[0141] When t<T1, the optimization unit determines that the heat dissipation power in the monitoring period is low, and adjusts the carrying power PC to PC', setting PC'=PC×cosΦ×(T1-t) / T1;

[0142] When T1≤t<T2, the optimization unit determines that the heat dissipation is normal within the monitoring period and does not perform optimization;

[0143] When t≥T2, the optimization unit determines that the heat dissipation power is high during the monitoring period, and optimizes the carrying power PC to PC", setting PC"=PC×cosΦ×exp[(T2-t) / T1];

[0144] Wherein, T1 is a first preset thermal convection heat dissipation power, T2 is a second preset thermal convection heat dissipation power, and T1<T2.

[0145] Specifically, the optimization unit optimizes the adjustment process of the overall operating state according to the thermal convection heat dissipation power within the monitoring period, thereby improving the accuracy of the overall operating state analysis, thereby improving the accuracy of the distribution cabinet management in the next monitoring period, and ultimately improving the efficiency of the distribution cabinet operation state supervision; In this embodiment, the method for obtaining the thermal convection heat dissipation power within the monitoring period is not specifically limited, and technical personnel in this field can set it freely, as long as the acquisition requirements of the thermal convection heat dissipation power within the monitoring period are met, such as by respectively setting temperature sensors inside and outside the distribution cabinet, and according to t=1.86×SC×ΔTS 1.25 Calculate the thermal convection heat dissipation power within the monitoring period, where SC is the surface area of ​​the distribution cabinet, and ΔTS is the temperature difference between the inside and outside of the distribution cabinet. In this embodiment, the values ​​of the first preset thermal convection heat dissipation power T1 and the second preset thermal convection heat dissipation power T2 are not specifically limited, and technical personnel in this field can set them freely, as long as the value requirements of the first preset thermal convection heat dissipation power T1 and the second preset thermal convection heat dissipation power T2 are met. For example, the first preset thermal convection heat dissipation power T1 can be set to 0.3 kilowatts, and the second preset thermal convection heat dissipation power T2 can be set to 0.5 kilowatts.

[0146] Specifically, the power distribution management module generates a management plan for the next monitoring cycle according to the loop operation status analysis results and the overall operation status analysis results of the power distribution cabinet within the monitoring cycle, wherein:

[0147] When the overall operation status is normal, if the operation status of the i-th circuit is normal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring cycle to D1(i), and sets D1(i)=D0(i); if the operation status of the i-th circuit is abnormal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring cycle to D2(i), and sets The power distribution management module uses the number of wires in each circuit in the next monitoring cycle as the management plan for the next monitoring cycle;

[0148] When the overall operation state is abnormal and g(i) / B<β, the power distribution management module sets the number of wires at the input end of the power distribution cabinet to F1, and sets F1=PW×L / (Ue 2 ×k), at this time, if the operating status of each i-th circuit is normal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring period to D3(i), setting D3(i) = D0(i); if the operating status of the i-th circuit is abnormal, the power distribution management module sets the number of wires in the i-th circuit in the next monitoring period to D4, setting The power distribution management module uses the number of wires in each circuit and the number of wires at the input end of the power distribution cabinet in the next monitoring period as the management plan for the next monitoring period;

[0149] When the overall operating status is abnormal and g(i) / B≥β, the power distribution management module will "recommend the user to re-layout and inspect the power distribution cabinet" as the management plan for the next monitoring cycle;

[0150] The power distribution management module outputs the management plan for the next monitoring cycle to the user;

[0151] Where D0(i) is the number of wires in the i-th circuit in the current monitoring period, g(i) is the duration of abnormal load of the distribution cabinet during the monitoring period, and β is the preset load duration ratio.

[0152] Specifically, the power distribution management module generates a management plan for the next monitoring period by analyzing the loop operation status analysis results and the overall operation status analysis results of the power distribution cabinet in the monitoring period, thereby improving the accuracy of the management of the power distribution cabinet in the next monitoring period, and ultimately improving the efficiency of the supervision of the operation status of the power distribution cabinet; it can be understood that in this embodiment, no specific limitation is made to the value of the preset load duration ratio β, and those skilled in the art can set it freely, as long as the value requirement of the preset load duration ratio β is met, such as the preset load duration ratio β can be set to 10%; in this embodiment, It is the result of rounding up "D0(i)×ln[e+c1×A1(i) / B+c2×c2×A2(i) / BC] / C".

[0153] Specifically, the management update module updates the management process of the number of input wires and the number of wires in each loop in the next management cycle according to the analysis results of the overall operation status of the power distribution cabinet in each monitoring cycle within the management cycle;

[0154] The management update module counts the proportion of monitoring periods γ in which the overall operating status of the distribution cabinet is normal within the management period, sets γ=n4 / N, and compares γ with the preset normal proportion V, and updates the process of generating a management plan for the next management period according to the comparison result, wherein:

[0155] When γ≤V, the management update module recommends that the user re-layout and check the power distribution cabinet;

[0156] When V≤γ<V×r, the management update module updates the preset load duration ratio of the next management cycle to β', and sets β'=β×sin[V×(1-r)];

[0157] When γ≥V×r, the management update module does not perform update;

[0158] Where r is the buffer coefficient, 1<r≤1.5, and N is the number of monitoring cycles within the management cycle.

[0159] Specifically, the management update module updates the process of generating a management plan for the next management cycle by analyzing the overall operating status of the distribution cabinet in each monitoring period within the management cycle, thereby improving the accuracy of the overall operating status analysis, thereby improving the accuracy of the management of the distribution cabinet in the next monitoring period, and ultimately improving the efficiency of the supervision of the operating status of the distribution cabinet; it can be understood that in this embodiment, no specific limitation is made on the values ​​of the buffer coefficient r and the preset normal ratio V, and technical personnel in this field can set them freely, as long as the value requirements of the buffer coefficient r and the preset normal ratio V are met, such as the buffer coefficient r can be set to 1.2, and the preset normal ratio V can be set to 0.95.

[0160] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A distribution cabinet operation supervision system, characterized in that: include, The data acquisition module is used to obtain power distribution information in real time, and is also used to obtain power distribution cabinet parameters and power distribution cabinet historical information; The data analysis module is used to analyze the operating parameters of the distribution cabinet according to the altitude of the distribution cabinet installation area and the distribution cabinet parameters, and is also used to classify the safety level of each circuit in the distribution cabinet according to the distribution cabinet historical information and the distribution cabinet operating parameters; The circuit analysis module is used to analyze the operating status of each circuit according to the power distribution information within the monitoring period and the safety level of each circuit; The overall analysis module is used to analyze the overall operation status of the power distribution cabinet according to the analysis results of the operation status of each circuit, and is also used to adjust the analysis process of the overall operation status of the power distribution cabinet according to the parameters of the power distribution cabinet; The power distribution management module is used to generate a management plan for the next monitoring period based on the analysis results of the circuit operation status and the overall operation status of the power distribution cabinet during the monitoring period, and output the management plan to the user; A management update module is used to update the process of generating a management plan for the next management cycle based on the analysis results of the overall operation status of the power distribution cabinets in each monitoring cycle within the management cycle; The data analysis module is provided with an altitude analysis unit, which is used to compare the altitude h of the distribution cabinet installation area with each preset altitude, and analyze the distribution cabinet operation parameters according to the comparison result and the distribution cabinet parameters, wherein: When 2000≤h<H1, the altitude analysis unit sets the actual maximum load power of each circuit to Ps1(i), and sets Ps1(i)=Ie(i)×Ue×[1-ln(1+h / 2000)] / cosΦ; When H1≤h<H2, the altitude analysis unit sets the actual maximum load power of each circuit to Ps2(i), and sets Ps2(i)=Ie(i)×Ue×[1-sin(h / 2000)] / cosΦ; When h≥H2, the altitude analysis unit sets the actual maximum load power of each circuit to Ps3(i), and sets Ps3(i)=Ie(i)×Ue×(1-h / 2000) / cosΦ; Where i=1, 2...n1, n1 is the number of circuits, Ie(i) is the rated current of the ith circuit of the distribution cabinet, Ue is the rated voltage of the distribution cabinet, H1 is the first preset altitude, cosΦ is the power factor, Φ is the phase difference between the voltage and current of the distribution cabinet, and H2 is the second preset altitude; The data analysis module is also provided with a safety level division unit, which is used to compare the historical load average value PE(i) of each circuit with the actual maximum load power Psj(i) of each circuit, and divide the safety level of each circuit in the distribution cabinet according to the comparison result, setting j=1, 2, 3, where: When PE(i)≤Psj(i)×a1, the safety level classification unit determines that the safety level of the circuit is level one; When Psj(i)×a1<PE(i)≤Psj(i)×a2, the safety level classification unit determines that the safety level of the circuit is level 2; When PE(i)>Psj(i)×a2, the safety level classification unit determines that the safety level of the circuit is level three; Wherein, a1 is the first preset safety factor, a2 is the second preset safety factor, 0<a1<a2<1.2; The data analysis module is further provided with a first adjustment unit, which is used to compare the triggering times n2(i) of the protection components of each circuit with the triggering times threshold M, and adjust the process of classifying the safety levels of each circuit in the power distribution cabinet according to the comparison result, wherein: When n2(i)<M, the first adjustment unit determines that the number of times the protection component of the circuit is triggered is normal and does not make any adjustment; When n2(i)≥M, the first adjustment unit determines that the number of times the protection component of the circuit is triggered is abnormal, and adjusts the second preset safety factor to a2', setting a2'=a2×{1-[n2(i)-M] / M}; The power distribution management module generates a management plan for the next monitoring cycle based on the loop operation status analysis results and the overall operation status analysis results of the power distribution cabinet within the monitoring cycle, wherein: When the overall operation status is normal, if the operation status of the ith circuit is normal, the power distribution management module sets the number of wires of the ith circuit in the next monitoring period to D1(i), and sets D1(i)=D0(i); if the operation status of the ith circuit is abnormal, the power distribution management module sets the number of wires of the ith circuit in the next monitoring period to D2(i), and sets D2(i)=⌈D0(i)×ln[e+c1×A1(i) / B+c2×c2×A2(i) / BC] / C⌉; the power distribution management module uses the number of wires of each circuit in the next monitoring period as the management plan for the next monitoring period; When the overall operation state is abnormal and g(i) / B<β, the power distribution management module sets the number of wires at the input end of the power distribution cabinet to F1, and sets F1=PW×L / (Ue 2 ×k), at this time, if the operating status of each i-th circuit is normal, the power distribution management module sets the number of wires of the i-th circuit in the next monitoring period to D3(i), and sets D3(i)=D0(i); if the operating status of the i-th circuit is abnormal, the power distribution management module sets the number of wires of the i-th circuit in the next monitoring period to D4, and sets D4(i)=⌈D0(i)×[e+c1×A1(i) / B+c2×c2×A2(i) / BC] / C⌉; the power distribution management module uses the number of wires of each circuit in the next monitoring period and the number of wires at the input end of the distribution cabinet as the management plan for the next monitoring period; When the overall operation status is abnormal and g(i) / B≥β, the power distribution management module will "recommend the user to re-layout and inspect the power distribution cabinet" as the management plan for the next monitoring cycle; The power distribution management module outputs the management plan for the next monitoring cycle to the user; Among them, D0(i) is the wire and quantity of the i-th circuit in the current monitoring period, g(i) is the duration of abnormal load of the distribution cabinet during the monitoring period, and β is the preset load duration ratio.

2. A distribution cabinet operation monitoring system according to claim 1, characterized in that: The loop analysis module is provided with a loop load analysis unit, which is used to analyze load abnormality according to the load power P(i) and the safety level of each loop, wherein: When the loop safety level is level one, if P(i) < Psj(i) × b1, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b1, the loop load analysis unit determines that the loop load is abnormal; When the loop safety level is level 2, if P(i) < Psj(i) × b2, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b2, the loop load analysis unit determines that the loop load is abnormal; When the loop safety level is level three, if P(i) < Psj(i) × b3, the loop load analysis unit determines that the loop load is normal; if P(i) ≥ Psj(i) × b1, the loop load analysis unit determines that the loop load is abnormal; Wherein, b1 is the first safety load factor, b2 is the second safety load factor, b3 is the third safety load factor, 1.2>b1>b2>b3>0; The loop analysis module is further provided with a current analysis unit, which analyzes the current abnormality of each loop according to the load current I(i) of each loop and the rated current Ie(i) of each loop, wherein: When I(i)<Ie(i)×η, the current analysis unit determines that the current of the loop is normal; When I(i)≥Ie(i)×η, the current analysis unit determines that the current of the loop is abnormal.

3. A distribution cabinet operation monitoring system according to claim 2, characterized in that: The circuit analysis module is further provided with an abnormality analysis unit, which analyzes the abnormal operation state of each circuit within the monitoring period according to the analysis results of the load abnormality and the current abnormality of each circuit, wherein: When c1×A1(i) / B+c2×A2(i) / B<C, the abnormality analysis unit determines that the operation state of the circuit within the monitoring period is normal; When c1×A1(i) / B+c2×A2(i) / B≥C, the abnormality analysis unit determines that the operation state of the circuit within the monitoring period is abnormal; Wherein, c1 is the load weight value, c2 is the current weight value, c1>c2 and c1+c2=1, A1(i) is the duration of the load abnormality of the i-th circuit within the monitoring period, B is the duration of the monitoring period, and C is the preset abnormality index.

4. A distribution cabinet operation monitoring system according to claim 3, characterized in that: The overall analysis module is provided with an overall abnormality analysis unit, and the overall abnormality analysis unit is used to analyze the overall operation status of the power distribution cabinet according to the abnormal analysis status of each circuit; The overall abnormality analysis unit counts the number of circuits n3 in which the abnormal operation state of each circuit of the power distribution cabinet is abnormal during the monitoring period, and calculates the abnormality ratio α according to the statistical result, and sets α=n3 / n1; The overall abnormality analysis unit compares the abnormality ratio α with the preset abnormality ratio Y, and analyzes the overall operating state of the power distribution cabinet according to the comparison result, wherein: When α<Y, the overall abnormality analysis unit determines that the overall operating state of the power distribution cabinet within the monitoring period is normal; When α≥Y, the overall abnormality analysis unit determines that the overall operation of the power distribution cabinet is abnormal during the monitoring period.

5. A distribution cabinet operation monitoring system according to claim 4, characterized in that: The overall analysis module is also provided with an overall load adjustment unit, which calculates the total output power PW and the carrying power PC of the distribution cabinet according to the distribution cabinet parameters. The calculation formulas of the total output power PW and the carrying power PC are as follows: ， Where S is the cross-sectional area of ​​the wire at the input end of the distribution cabinet, k is the conductivity of the wire, and L is the wire length of the wire at the input end of the distribution cabinet; The overall load adjustment unit compares the total output power PW with the carrying power PC during the monitoring period, and analyzes the load state of the distribution cabinet according to the comparison result. The overall load adjustment unit is also used to adjust the analysis process of the overall operating state according to the load state of the distribution cabinet, wherein: When PW<PC, the overall load adjustment unit determines that the load of the power distribution cabinet is normal within the monitoring period and does not make any adjustment; When PW≥PC, the overall load adjustment unit determines that the load of the distribution cabinet is abnormal within the monitoring period, and adjusts the preset abnormal ratio to Y', setting Y'=Y×{1-2 / π×arctan[(PW-PC) / PC]}.

6. A distribution cabinet operation monitoring system according to claim 5, characterized in that: The overall analysis module is further provided with an optimization unit, which is used to compare the heat convection heat dissipation power t within the monitoring period with each heat convection heat dissipation power, and optimize the adjustment process of the overall operating state according to the comparison result, wherein: When t<T1, the optimization unit determines that the heat dissipation power in the monitoring period is low, and adjusts the carrying power PC to PC', setting PC'=PC×cosΦ×(T1-t) / T1; When T1≤t<T2, the optimization unit determines that the heat dissipation is normal within the monitoring period and does not perform optimization; When t≥T2, the optimization unit determines that the heat dissipation power is high during the monitoring period, and optimizes the carrying power PC to PC", setting PC"=PC×cosΦ×exp[(T2-t) / T1]; Wherein, T1 is a first preset thermal convection heat dissipation power, T2 is a second preset thermal convection heat dissipation power, and T1<T2.

7. A distribution cabinet operation monitoring system according to claim 6, characterized in that: The management update module updates the process of generating a management plan for the next management cycle according to the analysis results of the overall operation status of the power distribution cabinet in each monitoring cycle within the management cycle; The management update module counts the proportion of monitoring periods γ in which the overall operation status of the power distribution cabinet is normal within the management period, sets γ=n4 / N, and compares γ with the preset normal proportion V. The management update module updates the management process of the number of input wires and the number of wires in each loop in the next management period according to the comparison result, wherein: When γ≤V, the management update module recommends that the user re-layout and check the power distribution cabinet; When V≤γ<V×r, the management update module updates the preset load duration ratio of the next management cycle to β', and sets β'=β×sin[V×(1-r)]; When γ≥V×r, the management update module does not perform update; Where r is the buffer coefficient, 1<r≤1.5, and N is the number of monitoring cycles within the management cycle.

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