A method and system for real-time monitoring of cable temperature and load in a wind farm

Abstract

The present invention relates to the technical field of wind farm cable fault detection, and discloses a method and system for real-time monitoring of wind farm cable temperature and load. The system includes a wind farm cable operating temperature fault monitoring module, a wind farm cable operating power transmission load fault monitoring module, and a wind farm cable operating fault location feedback module. A fiber Bragg grating temperature sensor is used to dynamically collect the real-time operating temperature parameters of the target cable line intermediate joints online, combining numerical analysis with the target cable line's normal operating temperature range to perform intelligent analysis of the target cable line intermediate joint's real-time operating temperature fault state. A current sensor is used to dynamically and intelligently identify the target cable line intermediate joint's real-time operating power transmission load fault state by combining numerical analysis with the target cable line's normal operating power transmission load range.

Description

Technical Field

[0001] The present invention relates to the technical field of wind farm cable fault detection, and in particular to a method and system for real-time monitoring of wind farm cable temperature and load. Background Art

[0002] Wind farms are multi-branch power transmission and transformation systems with complex topologies and short cable runs. These systems require numerous high- and low-voltage electrical equipment and cable connections, making the safety of cable joints and cable terminals within transfer boxes particularly crucial. Because cable joints are crimped on-site, they are often affected by factors such as seasonal changes, biological damage, line overload, construction worker crimping skills, and the high moisture and salinity of the soil in the area where the buried cables are located. Overheating and insulation aging, which degrade insulation performance and lead to cable head breakdown and discharge accidents, pose a serious threat to wind farm safety. Therefore, accurately monitoring the temperature and transmission load parameters of cable joints can scientifically monitor fault conditions in wind farm cable joints. However, existing wind farm cable monitoring systems cannot intelligently identify operating temperature and transmission load fault conditions of cable joints, nor can they provide accurate online feedback on cable joint operational fault monitoring results.

[0003] A Chinese invention patent application with publication number CN115453270A discloses an online cable trench temperature monitoring system and method. By setting up a PC terminal, a monitoring module, a temperature prediction module, a cooling module, a fire protection module, an alarm module, a cloud platform and a mobile terminal, the system can predict the temperature change trend of the cable, ventilate and cool the cable, and provide early warning of fire based on the predicted temperature change trend. However, the above technical solution cannot accurately determine the abnormal operating temperature status of the cable line based on different cable product models. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In order to solve the problem that the above-mentioned existing wind farm cable monitoring system cannot intelligently identify the operating temperature fault status and operating transmission load fault status of the cable intermediate joint, and cannot provide accurate online feedback on the cable intermediate joint operating fault monitoring results, the above purpose is to accurately collect the target cable line identification information, accurately search the target cable line cable product information, scientifically analyze the target cable normal operating temperature range parameters, online collect the real-time operating temperature parameters of the target cable intermediate joint, intelligently analyze the real-time operating temperature fault status of the target cable intermediate joint, accurately search the target cable normal operating transmission load range parameters, online collect the real-time operating transmission load parameters of the target cable intermediate joint, intelligently analyze the real-time operating transmission load fault status of the target cable intermediate joint, and accurately locate and feedback the cable intermediate joint operating fault monitoring information.

[0006] (2) Technical solution

[0007] The present invention is implemented through the following technical solution: a method for real-time monitoring of cable temperature and load in a wind farm, the method comprising the following steps:

[0008] S1. Collect target cable line identification text data;

[0009] S2. Search and process the cable product information of the target cable line in the wind farm based on the target cable line identification text data and the cable product text data of different cable lines to generate the cable product text data of the target cable line;

[0010] S3. Analyze and process the normal operating temperature interval of the target cable line in the wind farm based on the target cable line cable product text data and the normal operating temperature intervals of different cable products to generate the target cable line normal operating temperature interval;

[0011] S4, collecting the real-time operating temperature data of the target cable line intermediate joint and performing a real-time operating temperature fault state analysis and processing on the target cable line intermediate joint with the normal operating temperature range of the target cable line, generating the real-time operating temperature fault analysis data of the target cable line intermediate joint, and directly executing step S7 when it is a temperature fault;

[0012] S5. When there is no temperature fault, searching for the normal operating transmission load interval of the target cable line in the wind farm is performed based on the cable product information of the target cable line, the real-time operating temperature parameters of the intermediate joints, and the normal operating transmission load interval of the cable, to generate the normal operating transmission load interval of the target cable line;

[0013] S6. Collecting real-time transmission load data of the target cable line intermediate joint and performing real-time transmission load fault status analysis on the target cable line intermediate joint in combination with the normal operating transmission load interval of the target cable line to generate real-time transmission load fault analysis data of the target cable line intermediate joint. If no transmission load fault is detected, the wind farm cable operation fault monitoring operation is terminated.

[0014] S7. When a temperature fault or a transmission load fault occurs, the real-time operation fault information of the target cable line intermediate joint is screened and processed based on the real-time operation temperature and transmission load fault analysis information of the target cable line intermediate joint, and operation fault screening data of the target cable line intermediate joint in the wind farm is generated, and spatial coordinate data of the wind farm cable line intermediate joint with operation fault is collected;

[0015] S8. Construct wind farm cable line operation fault monitoring data and perform wind farm cable operation fault monitoring feedback operations.

[0016] Preferably, the steps of collecting target cable line identification text data are as follows:

[0017] S11. Input the identity text information of the target cable line to be monitored in the wind farm online through the data collection dialog box of the wind power supervision platform, and generate the target cable line identification text data L, wherein the target cable line identification text data includes the line number text information and line name text information of the target cable line in the wind farm.

[0018] Preferably, the cable product information search process of the target cable line of the wind farm is performed based on the target cable line identification text data and the cable product text data of different cable lines, and the operation steps of generating the target cable line cable product text data are as follows:

[0019] S21. Establish text data sets for different cable lines and cable products where a u Represents the cable product text data of different cable lines corresponding to the u-th wind farm cable line, Indicates the maximum number of cable lines in the wind farm, wherein the cable product text data of different cable lines includes brand text information, model text information, specification text information, application scenario text information and implementation standard text information of the cable product;

[0020] S22, using XGBoost algorithm to compare the target cable line identification text data L with the different cable line cable product text data a in the different cable line cable product text data set A. u Perform cable line identification character matching to search for the different cable line cable product text data a corresponding to the target cable line identification text data L u , and generate the target cable line cable product text data through data identification The target cable line cable product text data represents the cable product text data used in the target cable line of the wind farm.

[0021] Preferably, the normal operating temperature interval of the target cable line in the wind farm is analyzed and processed based on the target cable line cable product text data and the normal operating temperature intervals of different cable products, and the operating steps for generating the target cable line normal operating temperature interval are as follows:

[0022] S31. Establish a set of normal operating temperature ranges for different cable products B = (b1,Λ,b v ,Λ,b θ ), v=1,2,3,Λ,θ; where b vrepresents the normal operating temperature range of different cable products corresponding to the vth cable product type, θ represents the maximum number of cable product types, where b v =[b v,1 ,b v,2 ], b v,1 and b v,2 Respectively represent the normal operating temperature range b of the different cable products v The normal operating minimum temperature data of different cable products and the normal operating maximum temperature data of different cable products are shown in the figure. The normal operating temperature ranges of different cable products represent the standard temperature range data of different types of cable products under normal operating conditions. v,1 and b v,2 The unit is ℃;

[0023] S32, the target cable line cable product text data The normal operating temperature range b of the different cable products in the normal operating temperature range set B is the same as the normal operating temperature range b of the different cable products in the normal operating temperature range set B. v Perform cable product type keyword matching to search for the target cable line cable product text data The corresponding normal operating temperature range b of the different cable products v , and generate the target cable line normal operating temperature range through data identification Execute to generate the target cable line normal operating temperature range The specific steps are as follows:

[0024] S321, initializing parameters, updating the number of temperature search crow populations, the maximum number of iterations, and the flight distance Λ;

[0025] S322, initialize the initial position and memory of the temperature search crow individual in the search space of the normal operating temperature interval set B of the different cable products, and randomly distribute N temperature search crow individuals in the search space of the normal operating temperature interval set B of the different cable products with a spatial dimension of θ; in the first iteration, assume that the temperature search crow individual searches for the text data of the cable product of the target cable line in the search space of the normal operating temperature interval set B of the different cable products. Normal operating temperature range b of the different cable products v Food and hidden in the initial location;

[0026] S323, calculate the individual fitness value of each temperature search crow, that is, calculate the target cable line cable product text data The normal operating temperature interval b of the different cable products in the search space of the normal operating temperature interval set B of the different cable products v The fitness value of

[0027] S324. Update the position of the temperature search crow individual in the search space of the normal operating temperature range set B of the different cable products. The temperature search crow individual position update formula is as follows: in represents the new position of the temperature search crow individual i in the search space of the normal operating temperature range set B of the different cable products in the t+1th iteration, represents the position of the temperature search crow individual i in the search space of the normal operating temperature range set B of the different cable products in the t-th iteration, represents a random number uniformly distributed between

[01] , Λ i t represents the flight distance of the temperature search crow individual i in the search space of the normal operating temperature range set B of different cable products in the t-th iteration, It represents the food hiding location of the t-th iteration temperature search crow individual i in the search space of the normal operating temperature interval set B of the different cable products, that is, the t-th iteration temperature search crow individual i searches for the text data of the cable product of the target cable line in the search space of the normal operating temperature interval set B of the different cable products. Normal operating temperature range b of the different cable products v location;

[0028] S325, determine the feasibility of the new position, determine the feasibility of the new position of each temperature-searching crow individual; if the new position of the temperature-searching crow individual is feasible, the temperature-searching crow individual will update its position, that is, search for the cable product text data of the target cable line in the search space of the normal operating temperature range set B of the different cable products. Normal operating temperature range b of the different cable products v The temperature search crow individual is updated to the normal operating temperature range b of the different cable products that have successfully matched v Otherwise, the temperature-seeking crow individual stays at the current location and does not move to the new location;

[0029] S326, evaluate the fitness value of the new position, calculate the fitness value of each temperature search crow's individual new position, that is, calculate the target cable line cable product text data in the search space of the normal operating temperature range set B of the different cable products Normal operating temperature range b of the different cable products at the new location v The fitness value of

[0030] S327, update memory, if the fitness value of the new position of the temperature search crow is greater than the fitness value of the initial position in the memory, the temperature search crow updates its memory through the new position, otherwise it does not update its memory; that is, search for the cable product text data of the target cable line in the search space of the normal operating temperature range set B of the different cable products. Normal operating temperature range b of the different cable products with the largest fitness value v ;

[0031] S328, when the maximum number of iterations is met, output the target cable line cable product text data The most suitable normal operating temperature range b for the different cable products v ;

[0032] S329, the normal operating temperature range b of the different cable products output in step S328 v Generate the target cable line normal operating temperature range through data identification in and Respectively represent the normal operating temperature range of the target cable line The target cable line normal operation minimum temperature data and the target cable line normal operation maximum temperature data, and The unit is ℃.

[0033] Preferably, the real-time operating temperature data of the target cable line intermediate joint is collected and the real-time operating temperature fault state analysis processing of the target cable line intermediate joint is performed with the normal operating temperature range of the target cable line to generate the real-time operating temperature fault analysis data of the target cable line intermediate joint. When a temperature fault occurs, the operation steps of directly executing step S7 are as follows:

[0034] S41, collect the temperature parameters of the cable middle joint position of the target cable line of the wind farm online through the fiber Bragg grating temperature sensor and generate the real-time operating temperature data set C of the target cable line middle joint (c1,Λ,c o ,Λ,c θ ), o=1,2,3,Λ,θ;where c o represents the real-time operating temperature data of the target cable line intermediate joint at the oth cable intermediate joint position, θ represents the maximum number of cable intermediate joint positions, c o The unit is ℃;

[0035] S42, the target cable line intermediate joint real-time operating temperature data set C of the target cable line intermediate joint real-time operating temperature data c oThe cable intermediate joints are numbered in order according to the normal operating temperature range of the target cable line. The target cable line normal operation minimum temperature data and the target cable line normal operation maximum temperature data Perform temperature value comparison and generate the target cable line intermediate joint real-time operation temperature fault analysis data set C′=(c′1,Λ,c′ o ,Λ,c′ θ ), where c′ o Indicates the real-time operating temperature fault analysis data of the target cable line intermediate joint corresponding to the oth cable intermediate joint position;

[0036] when When , it means that the operating temperature of the oth cable intermediate joint in the target cable line meets the standard operating temperature, then the real-time operating temperature fault analysis data c′ of the target cable line intermediate joint is output. o There is no temperature fault;

[0037] When c o When , it means that the operating temperature of the oth cable intermediate joint in the target cable line does not meet the standard operating temperature, then the target cable line intermediate joint real-time operating temperature fault analysis data c′ is output. o If it is a temperature fault, directly execute step S7.

[0038] Preferably, when there is no temperature fault, the normal operating transmission load interval of the target cable line in the wind farm is searched based on the cable product information of the target cable line, the real-time operating temperature parameters of the intermediate joint, and the normal operating transmission load interval of the cable. The operating steps for generating the normal operating transmission load interval of the target cable line are as follows:

[0039] S51, when the target cable line intermediate joint real-time operating temperature fault analysis data c' o In order to avoid temperature fault, the normal operation transmission load interval set D = (d1,Λ,d p ,Λ,d ρ ), p=1,2,3,Λ,ρ; where d p represents the normal operation transmission load range of the cable corresponding to the pth cable line operation condition type, ρ represents the maximum number of cable line operation condition types, and the cable line operation condition type represents the wind farm cable line operation condition type composed of the cable product characteristic parameters used in the wind farm cable line and the cable line operation real-time temperature characteristic parameters; where d p =[d p,1 ,d p,2 ], d p,1 and dp,2 They represent the normal operation transmission load interval d of the cable respectively p The cable normal operation minimum transmission load data and the cable normal operation maximum transmission load data, the cable normal operation transmission load interval represents the standard transmission load interval data under different types of cable line operating conditions, d p,1 and d p,1 The unit of all is ampere;

[0040] S52, using the mean formula to calculate the target cable line intermediate joint real-time operating temperature data set C of the target cable line intermediate joint real-time operating temperature data set C. o Perform mean value processing to measure the real-time operating temperature average of the intermediate joints of the target cable line in The unit is ℃;

[0041] S53, using a breadth-first search algorithm to search the target cable line cable product text data The real-time operating temperature average of the intermediate joint of the target cable line The normal operation transmission load interval d of the cable in the normal operation transmission load interval set D p Perform cable line operation condition type character matching to search for the target cable line cable product text data The real-time operating temperature average of the intermediate joint of the target cable line The corresponding normal operation transmission load interval d of the cable p , and construct the target cable line normal operation transmission load interval d′ p , where d′ p =[d′ p,1 ,d′ p,2 ], d′ p,1 and d′ p,2 They represent the normal operation transmission load interval d′ of the target cable line respectively p The target cable line normal operation minimum transmission load data and the target cable line normal operation maximum transmission load data, d′ p,1 and d′ p,2 The unit of ampere is

[0042] Preferably, the real-time transmission load data of the target cable line intermediate joint is collected and the real-time transmission load fault state analysis of the target cable line intermediate joint is performed with the normal operating transmission load interval of the target cable line to generate the real-time transmission load fault analysis data of the target cable line intermediate joint. When there is no transmission load fault, the operation steps for ending the current wind farm cable operation fault monitoring operation are as follows:

[0043] S61, collect the transmission load parameters of the cable intermediate joint position of the target cable line of the wind farm online through the current sensor and generate the real-time operation transmission load data set E of the target cable line intermediate joint (e1,Λ,e o ,Λ,e θ ), where e o represents the real-time transmission load data of the target cable line intermediate joint at the oth cable intermediate joint position, e o The unit is ampere,

[0044] S62, the target cable line intermediate joint real-time operation transmission load data set E of the target cable line intermediate joint real-time operation transmission load data e o The cable intermediate joint positions are numbered in order and correspond to the normal operation transmission load interval d′ of the target cable line. p The target cable line in the normal operation of the minimum transmission load data d' p,1 and the target cable line normal operation maximum transmission load data d′ p,2 Perform transmission load value comparison, and generate the target cable line intermediate joint real-time operation transmission load fault analysis data set E′=(e′1,Λ,e′ o ,Λ,e′ θ ), where e′ o Indicates the real-time transmission load fault analysis data of the target cable line intermediate joint corresponding to the oth cable intermediate joint position;

[0045] When e o ∈d′ p When , it means that the transmission load of the oth cable intermediate joint in the target cable line meets the standard transmission load, then the target cable line intermediate joint real-time operation transmission load fault analysis data e′ is output o If there is no transmission load fault, the wind farm cable operation fault monitoring operation is terminated directly at this time;

[0046] When e o d′ p When , it means that the transmission load of the oth cable intermediate joint in the target cable line does not meet the standard transmission load, then the target cable line intermediate joint real-time operation transmission load fault analysis data e′ is output. o It is a transmission load fault.

[0047] Preferably, when a temperature fault or a power transmission load fault occurs, the steps of screening and processing the real-time operation fault information of the target cable line intermediate joint according to the real-time operation temperature and the power transmission load fault analysis information of the target cable line intermediate joint, generating operation fault screening data of the target cable line intermediate joint in the wind farm, and collecting spatial coordinate data of the wind farm cable line operation fault intermediate joint are as follows:

[0048] S71, when the target cable line intermediate joint real-time operating temperature fault analysis data c' o When the fault is a temperature fault, the BERT language model algorithm is used to search the target cable line intermediate joint real-time operation temperature fault analysis data set C' for all the target cable line intermediate joint real-time operation temperature fault analysis data c' whose temperature fault analysis result is a temperature fault o , and construct the wind farm target cable line intermediate joint operation temperature fault screening data set C″=(c″ o1 ,Λ,c″ o2 ), 1≤o1≤o≤o2≤θ, where c″ o1 Indicates the operating temperature fault screening data of the intermediate joint of the target cable line in the wind farm corresponding to the position of the intermediate joint of the cable at the 1st position, c″ o2 Indicates the operating temperature fault screening data of the intermediate joint of the target cable line in the wind farm corresponding to the position of the intermediate joint of the cable at the 2nd position;

[0049] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When the load failure is detected, the BERT language model algorithm is used to search the target cable line intermediate joint real-time transmission load fault analysis data set E' for all the target cable line intermediate joint real-time transmission load fault analysis data e' whose transmission load fault analysis result is a transmission load fault. o , and construct the wind farm target cable line intermediate joint operation transmission load fault screening data set E″=(e″ o1 ,Λ,e″ o2 ), 1≤o1≤o≤o2≤θ, where e″ o1 represents the transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the o1th cable intermediate joint position, e″ o2 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the o2-th cable intermediate joint position;

[0050] S72, when the target cable line intermediate joint real-time operating temperature fault analysis data c' oWhen it is a temperature fault, the wind farm target cable line intermediate joint operation temperature fault screening data set C" is used according to the wind farm target cable line intermediate joint operation temperature fault screening data set C". o1 to c″ o2 The corresponding cable intermediate joint position number cooperates with the position sensor to collect the spatial coordinates of the cable intermediate joint with temperature fault online, and generates the wind farm cable line operation temperature fault intermediate joint spatial coordinate data set C″′=(c″′ o1 ,Λ,c″′ o2 ), where c″′ o1 Indicates the spatial coordinate data of the wind farm cable line operating temperature fault intermediate joint corresponding to the position of the o1th cable intermediate joint, c″′ o2 Indicates the spatial coordinate data of the wind farm cable line operating temperature fault intermediate joint corresponding to the position of the o2-th cable intermediate joint;

[0051] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When there is a transmission load fault, the target cable line intermediate joint transmission load fault screening data set E″ of the target cable line intermediate joint of the wind farm is used to screen the target cable line intermediate joint transmission load fault. o1 to e″ o2 The corresponding cable intermediate joint position number cooperates with the position sensor to collect the spatial coordinates of the cable intermediate joint with the transmission load fault online, and generates the wind farm cable line transmission load fault intermediate joint spatial coordinate data set E″′=(e″′ o1 ,Λ,e″′ o2 ), where e″′ o1 The spatial coordinate data of the wind farm cable line transmission load fault intermediate joint corresponding to the position of the o1th cable intermediate joint, e″′ o2 It represents the spatial coordinate data of the wind farm cable line transmission load fault intermediate joint corresponding to the position of the o2th cable intermediate joint.

[0052] Preferably, the steps of constructing wind farm cable line operation fault monitoring data and performing wind farm cable operation fault monitoring feedback operations are as follows:

[0053] S81, when the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time oWhen a transmission load fault occurs, the target cable line identification text data L, the wind farm target cable line intermediate joint operating temperature fault screening data set C", and the wind farm cable line operating temperature fault intermediate joint spatial coordinate data set C"' are combined to construct wind farm cable line operating temperature fault monitoring data H1 = (L, C", C"');

[0054] When the target cable line intermediate joint runs the transmission load fault analysis data in real time o When there is a transmission load fault, the target cable line identification text data L, the wind farm target cable line intermediate joint operation transmission load fault screening data set E″, and the wind farm cable line operation transmission load fault intermediate joint spatial coordinate data set E″′ are combined to construct the wind farm cable line operation transmission load fault monitoring data H2=(L, E″, E″′);

[0055] S82, when the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When there is a transmission load fault, the wind farm cable line operating temperature fault monitoring data H1 is transmitted to the wind power supervision platform through the Internet of Things communication network to perform wind farm cable operation fault monitoring feedback operation;

[0056] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When there is a transmission load fault, the wind farm cable line operation transmission load fault monitoring data H2 is transmitted to the wind power supervision platform through the Internet of Things communication network to perform wind farm cable operation fault monitoring feedback operation.

[0057] A wind farm cable temperature and load real-time monitoring system, used to implement a wind farm cable temperature and load real-time monitoring method, the system includes a wind farm cable operation temperature fault monitoring module, a wind farm cable operation transmission load fault monitoring module, and a wind farm cable operation fault location feedback module;

[0058] The wind farm cable operation temperature fault monitoring module includes a target cable line identification information acquisition unit, a different cable line cable product information storage unit, a target cable line cable product information search unit, a different cable product normal operating temperature interval storage unit, a target cable line normal operating temperature interval analysis unit, a target cable line intermediate joint real-time operation temperature acquisition unit, and a target cable line intermediate joint real-time operation temperature fault state analysis unit;

[0059] The target cable line identification information acquisition unit collects target cable line identification text data through the wind power supervision platform; the different cable line cable product information storage unit is used to store different cable line cable product text data; the target cable line cable product information search unit is used to perform cable product information search processing on the target cable line of the wind farm based on the target cable line identification text data and different cable line cable product text data, and generate target cable line cable product text data; the different cable product normal operating temperature range storage unit is used to store different cable product normal operating temperature ranges; the target cable line normal operating temperature range analysis unit is used to analyze the target cable line based on the target cable line identification text data and different cable line cable product text data. The normal operating temperature interval of the target cable line in the wind farm is analyzed and processed by using the text data of the cable products and the normal operating temperature intervals of different cable products to generate the normal operating temperature interval of the target cable line; the real-time operating temperature acquisition unit of the target cable line intermediate joint acquires the real-time operating temperature data of the target cable line intermediate joint through the fiber grating temperature sensor; the real-time operating temperature fault state analysis unit of the target cable line intermediate joint performs real-time operating temperature fault state analysis and processing on the target cable line intermediate joint according to the real-time operating temperature data of the target cable line intermediate joint and the normal operating temperature interval of the target cable line to generate the real-time operating temperature fault analysis data of the target cable line intermediate joint;

[0060] The wind farm cable operation transmission load fault monitoring module includes a cable normal operation transmission load interval storage unit, a target cable line normal operation transmission load interval search unit, a target cable line intermediate joint real-time operation transmission load acquisition unit, and a target cable line intermediate joint real-time operation transmission load fault state analysis unit;

[0061] The cable normal operation transmission load interval storage unit is used to store the cable normal operation transmission load interval; the target cable line normal operation transmission load interval search unit performs normal operation transmission load interval search processing of the target cable line of the wind farm according to the cable product information and the real-time operation temperature parameters of the intermediate joint of the target cable line and the cable normal operation transmission load interval, and generates the target cable line normal operation transmission load interval; the target cable line intermediate joint real-time operation transmission load acquisition unit acquires the target cable line intermediate joint real-time operation transmission load data through the current sensor; the target cable line intermediate joint real-time operation transmission load fault state analysis unit performs target cable line intermediate joint real-time operation transmission load fault state analysis processing according to the target cable line intermediate joint real-time operation transmission load data and the target cable line normal operation transmission load interval, and generates target cable line intermediate joint real-time operation transmission load fault analysis data;

[0062] The wind farm cable operation fault location feedback module includes a wind farm cable line intermediate joint operation fault information screening unit, a wind farm cable line operation fault intermediate joint location information collection unit, and a wind farm cable line operation fault monitoring result feedback unit;

[0063] The wind farm cable line intermediate joint operation fault information screening unit performs real-time operation fault information screening of the target cable line intermediate joint based on the real-time operation temperature and transmission load fault analysis information of the target cable line intermediate joint, and generates wind farm target cable line intermediate joint operation fault screening data; the wind farm cable line operation fault intermediate joint position information acquisition unit cooperates with the position sensor to acquire the wind farm cable line operation fault intermediate joint spatial coordinate data based on the wind farm target cable line intermediate joint operation fault screening data; the wind farm cable line operation fault monitoring result feedback unit is used to construct the wind farm cable line operation fault monitoring data and perform the wind farm cable operation fault monitoring feedback operation.

[0064] (3) Beneficial effects

[0065] The present invention provides a method and system for real-time monitoring of cable temperature and load in a wind farm, which has the following beneficial effects:

[0066] 1. Accurately obtain the target cable line identification text information through the wind power supervision platform, combine it with the intelligent search algorithm and the scientifically preset text information of different cable lines and cable products to accurately search the cable product information of the target cable line, and provide reliable data support for the accurate search of the normal operating temperature parameters required for the temperature fault state of the intermediate joint of the target cable line; combine the target cable line cable product text information with the intelligent recognition algorithm and the normal operating temperature range of different cable products stored in the standard to efficiently and accurately match the normal operating temperature range required for the temperature fault analysis of the intermediate joint of the target cable line, and realize accurate matching of the normal operating temperature range parameters required for the temperature fault analysis of the intermediate joint of the cable line based on different cable product types, thereby improving the accuracy of cable temperature fault monitoring in wind farms; use the fiber grating temperature sensor to dynamically collect the real-time operating temperature parameters of the intermediate joint of the target cable line online, combine it with numerical analysis and the normal operating temperature range of the target cable line to perform intelligent analysis of the real-time operating temperature fault state of the intermediate joint of the target cable line, realize efficient and accurate identification of the real-time operating temperature fault of the intermediate joint of the target cable line, and improve the efficiency and reliability of cable temperature fault monitoring operations in wind farms.

[0067] 2. By combining the cable product information of the target cable line and the real-time operating temperature parameters of the intermediate joints with the intelligent search algorithm and the normal operating transmission load interval of the cable, a dynamic and accurate search is performed on the normal operating transmission load interval required for the transmission load fault analysis of the intermediate joints of the target cable line. The normal operating transmission load interval parameters required for the transmission load fault analysis of the intermediate joints of the cable line are accurately matched based on the cable product type and the real-time operating temperature parameters of the cable, thereby improving the accuracy of the cable load monitoring results of the wind farm. The real-time operating transmission load parameters of the intermediate joints of the target cable line are combined with numerical analysis using the current sensor online and the normal operating transmission load interval of the target cable line to perform dynamic intelligent identification of the real-time operating transmission load fault status of the intermediate joints of the target cable line. This realizes intelligent monitoring of whether the transmission load of the cable line outputs the standard transmission load requirements, thereby improving the quality and efficiency of cable load monitoring in wind farms.

[0068] 3. By realizing intelligent screening of the object information of the intermediate joints in the cable lines of the wind farm in a faulty state, and cooperating with the position sensor to accurately collect the spatial coordinate information of the intermediate joints in the cable lines in a faulty state, the intelligent positioning of the intermediate joints in the cable lines of the wind farm in a faulty state is realized; based on the target cable line identification information, temperature fault analysis parameters, transmission current load fault analysis parameters and the position information of the faulty intermediate joint, the wind farm cable line operation fault monitoring data is scientifically constructed, and the wind farm cable operation fault monitoring feedback operation is performed autonomously and efficiently, realizing dynamic and accurate feedback of the wind farm cable temperature fault status and the transmission load fault status, thereby improving the safety and reliability of wind power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 This is a module schematic diagram of a wind farm cable temperature and load real-time monitoring system provided by the present invention;

[0070] Figure 2 This is a flow chart of a method for real-time monitoring of cable temperature and load in a wind farm provided by the present invention. DETAILED DESCRIPTION

[0071] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0072] The embodiments of the method and system for real-time monitoring of cable temperature and load in a wind farm are as follows:

[0073] Example 1:

[0074] See also Figure 1 - Figure 2 A method for real-time monitoring of cable temperature and load in a wind farm comprises the following steps:

[0075] S1. Collect target cable line identification text data;

[0076] S2. Search and process the cable product information of the target cable line of the wind farm based on the target cable line identification text data and the cable product text data of different cable lines to generate the cable product text data of the target cable line;

[0077] S3. Analyze and process the normal operating temperature interval of the target cable line in the wind farm based on the text data of the cable products of the target cable line and the normal operating temperature intervals of different cable products to generate the normal operating temperature interval of the target cable line;

[0078] S4. Collect the real-time operating temperature data of the target cable line intermediate joint and perform real-time operating temperature fault state analysis and processing on the target cable line intermediate joint with the normal operating temperature range of the target cable line to generate real-time operating temperature fault analysis data of the target cable line intermediate joint. If it is a temperature fault, directly execute step S7;

[0079] S5. When there is no temperature fault, searching for the normal operating transmission load interval of the target cable line in the wind farm is performed based on the cable product information of the target cable line, the real-time operating temperature parameters of the intermediate joints, and the normal operating transmission load interval of the cable, to generate the normal operating transmission load interval of the target cable line;

[0080] S6. Collect the real-time transmission load data of the target cable line intermediate joint and perform real-time transmission load fault status analysis on the target cable line intermediate joint compared with the normal operating transmission load interval of the target cable line to generate real-time transmission load fault analysis data of the target cable line intermediate joint. If there is no transmission load fault, the wind farm cable operation fault monitoring operation is terminated.

[0081] S7. When a temperature fault or a transmission load fault occurs, the real-time operation fault information of the target cable line intermediate joint is screened and processed based on the real-time operation temperature and transmission load fault analysis information of the target cable line intermediate joint, and operation fault screening data of the target cable line intermediate joint in the wind farm is generated, and spatial coordinate data of the wind farm cable line intermediate joint with operation fault is collected;

[0082] S8. Construct wind farm cable line operation fault monitoring data and perform wind farm cable operation fault monitoring feedback operations.

[0083] For further information, see Figure 1 - Figure 2,The steps to collect the target cable line identification text data are as follows:

[0084] S11. Input the identity text information of the target cable line to be monitored in the wind farm online through the data collection dialog box of the wind power supervision platform, and generate the target cable line identification text data L. The target cable line identification text data includes the line number text information and line name text information of the target cable line in the wind farm.

[0085] The cable product information of the target cable line of the wind farm is searched and processed based on the target cable line identification text data and the cable product text data of different cable lines. The operation steps for generating the target cable line cable product text data are as follows:

[0086] S21. Establish text data sets for different cable lines and cable products where a u Represents the cable product text data of different cable lines corresponding to the u-th wind farm cable line, Indicates the maximum number of cable lines in a wind farm. The cable product text data for different cable lines includes the brand text information, model text information, specification text information, application scenario text information, and implementation standard text information of the cable product;

[0087] S22, using XGBoost algorithm to compare the target cable line identification text data L with the different cable line cable product text data a in the different cable line cable product text data set A. u Perform cable line identification character matching to search for different cable line cable product text data a corresponding to the target cable line identification text data L u , and generate the target cable line cable product text data through data identification The target cable line cable product text data represents the cable product text data used in the target cable line of the wind farm.

[0088] Based on the target cable line cable product text data and the normal operating temperature ranges of different cable products, the normal operating temperature range of the target cable line in the wind farm is analyzed and processed. The steps for generating the normal operating temperature range of the target cable line are as follows:

[0089] S31. Establish a set of normal operating temperature ranges for different cable products B = (b1,Λ,b v ,Λ,b θ ), v=1,2,3,Λ,θ; where b v represents the normal operating temperature range of different cable products corresponding to the vth cable product type, θ represents the maximum number of cable product types, where b v =[b v,1 ,bv,2 ], b v,1 and b v,2 Respectively represent the normal operating temperature range b of different cable products v The normal operating minimum temperature data and the normal operating maximum temperature data of different cable products are shown in the figure. The normal operating temperature range of different cable products represents the standard temperature range data of different types of cable products under normal operating conditions. v,1 and b v,2 The unit is ℃;

[0090] S32, target cable line cable product text data The normal operating temperature range b of different cable products in the normal operating temperature range set B is the same as that of different cable products. v Perform cable product type keyword matching to search for target cable line cable product text data Corresponding normal operating temperature range b for different cable products v , and generate the target cable line normal operating temperature range through data identification Execute to generate the target cable line normal operating temperature range The specific steps are as follows:

[0091] S321, initializing parameters, updating the number of temperature search crow populations, the maximum number of iterations, and the flight distance Λ;

[0092] S322. Initialize the initial position and memory of the temperature search crow individual in the search space of the normal operating temperature range set B of different cable products. N temperature search crow individuals are randomly distributed in the search space of the normal operating temperature range set B of different cable products with a spatial dimension of θ. In the first iteration, it is assumed that the temperature search crow individual searches for the text data of the cable product corresponding to the target cable line in the search space of the normal operating temperature range set B of different cable products. Normal operating temperature range b of different matching cable products v Food and hidden in the initial location;

[0093] S323, calculate the individual fitness value of each temperature search crow, that is, calculate the target cable line cable product text data Different cable product normal operating temperature intervals b in the search space of different cable product normal operating temperature intervals set B v The fitness value of

[0094] S324. Update the position of the temperature search crow individual in the search space of the set B of normal operating temperature ranges of different cable products. The temperature search crow individual position update formula is as follows: in represents the new position of the temperature search crow individual i in the search space of the normal operating temperature range set B of different cable products in the t+1th iteration, represents the position of the temperature search crow individual i in the search space of the normal operating temperature range set B of different cable products in the t-th iteration, represents a random number uniformly distributed between

[01] , Λ i t represents the flight distance of the temperature search crow individual i in the search space of the normal operating temperature range set B of different cable products in the t-th iteration, It represents the food hiding location of the crow individual i in the search space of different cable product normal operating temperature intervals B in the t-th iteration temperature search, that is, the crow individual i in the search space of different cable product normal operating temperature intervals B searches for the target cable line cable product text data. Normal operating temperature range b of different matching cable products v location;

[0095] S325, determine the feasibility of the new position, determine the feasibility of the new position of each temperature-searching crow individual; if the new position of the temperature-searching crow individual is feasible, the temperature-searching crow individual will update its position, that is, search for the cable product text data of the target cable line in the search space of the normal operating temperature range set B of different cable products. Normal operating temperature range b of different matching cable products v The temperature search crow individual is updated to the normal operating temperature range b of different cable products that have successfully matched v Otherwise, the temperature-seeking crow individual stays at the current location and does not move to the new location;

[0096] S326, evaluate the fitness value of the new position, calculate the fitness value of each temperature search crow's individual new position, that is, calculate the target cable line cable product text data in the search space of the normal operating temperature range set B of different cable products Normal operating temperature range b of different cable products at new locations v The fitness value of

[0097] S327, update memory, if the fitness value of the new position of the temperature search crow is greater than the fitness value of the initial position in the memory, the temperature search crow updates its memory through the new position, otherwise it does not update its memory; that is, search for the cable product text data of the target cable line in the search space of the set B of normal operating temperature ranges of different cable products. Normal operating temperature range b of different cable products with the largest fitness value v ;

[0098] S328, when the maximum number of iterations is met, output the target cable line cable product text data The most suitable normal operating temperature range b for different cable products v ;

[0099] S329, the normal operating temperature range b of different cable products output in step S328 v Generate the target cable line normal operating temperature range through data identification in and Respectively represent the normal operating temperature range of the target cable line The target cable line normal operation minimum temperature data and the target cable line normal operation maximum temperature data, and The unit is ℃.

[0100] Collect the real-time operating temperature data of the target cable line intermediate joint and perform real-time operating temperature fault status analysis of the target cable line intermediate joint with the normal operating temperature range of the target cable line to generate real-time operating temperature fault analysis data of the target cable line intermediate joint. When a temperature fault occurs, directly execute step S7 as follows:

[0101] S41, collect the temperature parameters of the cable middle joint position of the target cable line of the wind farm online through the fiber Bragg grating temperature sensor and generate the real-time operating temperature data set C of the target cable line middle joint (c1,Λ,c o ,Λ,c θ ), o=1,2,3,Λ,θ;where c o represents the real-time operating temperature data of the target cable line intermediate joint at the oth cable intermediate joint position, θ represents the maximum number of cable intermediate joint positions, c o The unit is ℃;

[0102] S42, the target cable line intermediate joint real-time operating temperature data set C of the target cable line intermediate joint real-time operating temperature data c o The cable intermediate joints are numbered in order according to the normal operating temperature range of the target cable line. The target cable line normal operation minimum temperature data and the target cable line normal operating maximum temperature data Perform temperature value comparison and generate the target cable line intermediate joint real-time operation temperature fault analysis data set C′=(c′1,Λ,c′ o ,Λ,c′ θ ), where c′ oIndicates the real-time operating temperature fault analysis data of the target cable line intermediate joint corresponding to the oth cable intermediate joint position;

[0103] when When , it means that the operating temperature of the oth cable intermediate joint in the target cable line meets the standard operating temperature, then the real-time operating temperature fault analysis data c′ of the target cable line intermediate joint is output. o There is no temperature fault;

[0104] When c o When , it means that the operating temperature of the oth cable intermediate joint in the target cable line does not meet the standard operating temperature, then the target cable line intermediate joint real-time operating temperature fault analysis data c′ is output. o If it is a temperature fault, directly execute step S7.

[0105] Through the cooperation of the target cable line identification information acquisition unit and the target cable line cable product information search unit, the wind power supervision platform is used to accurately obtain the target cable line identification text information, combined with the intelligent search algorithm and the scientific preset different cable line cable product text information to accurately search the cable product information of the target cable line, and provide reliable data support for the accurate search of the normal operating temperature parameters required for the temperature fault state of the intermediate joint of the target cable line; the target cable line normal operating temperature range analysis unit combines the target cable line cable product text information with the intelligent recognition algorithm and the standard stored normal operating temperature range of different cable products to efficiently and accurately match the normal operating temperature range required for the target cable line intermediate joint temperature fault analysis. The system can match the normal operating temperature range parameters required for temperature fault analysis of intermediate joints in cable lines accurately based on different cable product types, thereby improving the accuracy of cable temperature fault monitoring in wind farms. The real-time operating temperature acquisition unit for the intermediate joints in the target cable line and the real-time operating temperature fault status analysis unit for the intermediate joints in the target cable line cooperate with each other, and the real-time operating temperature parameters of the intermediate joints in the target cable line are collected online and dynamically by using the fiber grating temperature sensor. The real-time operating temperature parameters of the intermediate joints in the target cable line are combined with the numerical analysis and the normal operating temperature range of the target cable line to perform intelligent analysis of the real-time operating temperature fault status of the intermediate joints in the target cable line, thereby achieving efficient and accurate identification of the real-time operating temperature fault of the intermediate joints in the target cable line, thereby improving the efficiency and reliability of cable temperature fault monitoring operations in wind farms.

[0106] For further information, see Figure 1 - Figure 2 When there is no temperature fault, the normal operating transmission load interval of the target cable line in the wind farm is searched based on the cable product information of the target cable line, the real-time operating temperature parameters of the intermediate joints, and the normal operating transmission load interval of the cable. The steps for generating the normal operating transmission load interval of the target cable line are as follows:

[0107] S51, when the target cable line intermediate joint real-time operating temperature fault analysis data c' o In order to avoid temperature fault, the normal operation transmission load interval set D = (d1,Λ,d p ,Λ,d ρ ), p=1,2,3,Λ,ρ; where d p represents the normal operation transmission load range of the cable corresponding to the pth cable line operation condition type, ρ represents the maximum number of cable line operation condition types, and the cable line operation condition type represents the wind farm cable line operation condition type composed of the cable product characteristic parameters used in the wind farm cable line and the cable line operation real-time temperature characteristic parameters; where d p =[d p,1 ,d p,2 ], d p,1 and d p,2 They represent the normal operation transmission load interval d of the cable respectively p The cable normal operation minimum transmission load data and the cable normal operation maximum transmission load data, the cable normal operation transmission load range represents the standard transmission load range data under different types of cable line operating conditions, d p,1 and d p,1 The unit of all is ampere;

[0108] S52, using the mean formula to calculate the target cable line intermediate joint real-time operating temperature data c in the target cable line intermediate joint real-time operating temperature data set C. o Perform mean value processing to measure the real-time operating temperature average of the intermediate joints of the target cable line in The unit is ℃;

[0109] S53, using breadth-first search algorithm to target cable line cable product text data Real-time operating temperature average of the intermediate joints of the target cable line The cable normal operation transmission load interval d in the cable normal operation transmission load interval set D p Perform character matching on cable line operating condition type to search for target cable line and cable product text data Real-time operating temperature average of the intermediate joints of the target cable line The corresponding normal operation transmission load interval d of the cable p , and construct the target cable line normal operation transmission load interval d′ p , where d′ p =[d′ p,1 ,d′ p,2 ], d′ p,1 and d′ p,2They represent the normal operation transmission load interval d′ of the target cable line respectively p The target cable line normal operation minimum transmission load data and the target cable line normal operation maximum transmission load data, d′ p,1 and d′ p,2 The unit of ampere is

[0110] Collect the real-time transmission load data of the target cable line intermediate joint and perform real-time transmission load fault status analysis of the target cable line intermediate joint with the normal operating transmission load interval of the target cable line to generate real-time transmission load fault analysis data of the target cable line intermediate joint. If there is no transmission load fault, the operation steps for ending the wind farm cable operation fault monitoring operation are as follows:

[0111] S61, collect the transmission load parameters of the cable intermediate joint position of the target cable line of the wind farm online through the current sensor and generate the real-time operation transmission load data set E of the target cable line intermediate joint (e1,Λ,e o ,Λ,e θ ), where e o represents the real-time transmission load data of the target cable line intermediate joint at the oth cable intermediate joint position, e o The unit is ampere,

[0112] S62, the target cable line intermediate joint real-time operation transmission load data set E of the target cable line intermediate joint real-time operation transmission load data e o The cable intermediate joints are numbered in order according to the normal operation of the target cable line and the transmission load interval d' p The target cable line normal operation minimum transmission load data d′ p,1 and the target cable line normal operation maximum transmission load data d′ p,2 Perform transmission load value comparison, and generate the target cable line intermediate joint real-time operation transmission load fault analysis data set E′=(e′1,Λ,e′ o ,Λ,e′ θ ), where e′ o Indicates the real-time transmission load fault analysis data of the target cable line intermediate joint corresponding to the oth cable intermediate joint position;

[0113] When e o ∈d′ p When , it means that the transmission load of the oth cable intermediate joint in the target cable line meets the standard transmission load, then the target cable line intermediate joint real-time operation transmission load fault analysis data e′ is output oIf there is no transmission load fault, the wind farm cable operation fault monitoring operation is terminated directly at this time;

[0114] When e o d′ p When , it means that the transmission load of the oth cable intermediate joint in the target cable line does not meet the standard transmission load, then the target cable line intermediate joint real-time operation transmission load fault analysis data e′ is output. o It is a transmission load fault.

[0115] Through the target cable line normal operating transmission load interval search unit, the normal operating transmission load interval required for the transmission load fault analysis of the target cable line intermediate joint is dynamically and accurately searched according to the cable product information and the real-time operating temperature parameters of the intermediate joint of the target cable line combined with the intelligent search algorithm and the normal operating transmission load interval of the cable, so as to achieve accurate matching of the normal operating transmission load interval parameters required for the transmission load fault analysis of the cable line intermediate joint based on the cable product type and the real-time operating temperature parameters of the cable, thereby improving the accuracy of the wind farm cable load monitoring results; the target cable line intermediate joint real-time operating transmission load acquisition unit and the target cable line intermediate joint real-time operating transmission load fault state analysis unit cooperate with each other, and the current sensor is used to combine the real-time operating transmission load parameters of the target cable line intermediate joint online with numerical analysis and the normal operating transmission load interval of the target cable line to perform dynamic intelligent identification of the real-time operating transmission load fault state of the target cable line intermediate joint, thereby realizing intelligent monitoring of whether the cable line transmission load outputs the standard transmission load requirements, thereby improving the quality and efficiency of wind farm cable load monitoring.

[0116] For further information, please refer to Figure-- Figure 2 When a temperature fault or a transmission load fault occurs, the real-time operation fault information of the target cable line intermediate joint is screened and processed based on the real-time operation temperature and transmission load fault analysis information of the target cable line intermediate joint, and the operation steps for generating operation fault screening data of the target cable line intermediate joint in the wind farm and collecting the spatial coordinate data of the wind farm cable line operation fault intermediate joint are as follows:

[0117] S71, when the target cable line intermediate joint real-time operating temperature fault analysis data c' o When the fault is a temperature fault, the BERT language model algorithm is used to search for all the target cable line intermediate joint real-time operation temperature fault analysis data c′ with the temperature fault analysis result as temperature fault in the target cable line intermediate joint real-time operation temperature fault analysis data set C′. o , and construct the wind farm target cable line intermediate joint operation temperature fault screening data set C″=(c″ o1 ,Λ,c″ o2 ), 1≤o1≤o≤o2≤θ, where c″o1 Indicates the operating temperature fault screening data of the intermediate joint of the target cable line in the wind farm corresponding to the position of the intermediate joint of the cable at the 1st position, c″ o2 Indicates the operating temperature fault screening data of the intermediate joint of the target cable line in the wind farm corresponding to the position of the intermediate joint of the cable at the 2nd position;

[0118] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When the load fault occurs, the BERT language model algorithm is used to search the target cable line intermediate joint real-time transmission load fault analysis data set E′ to find all the target cable line intermediate joint real-time transmission load fault analysis data e′ whose transmission load fault analysis result is transmission load fault. o , and construct the wind farm target cable line intermediate joint operation transmission load fault screening data set E″=(e″ o1 ,Λ,e″ o2 ), 1≤o1≤o≤o2≤θ, where e″ o1 represents the transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the o1th cable intermediate joint position, e″ o2 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the o2-th cable intermediate joint position;

[0119] S72, when the target cable line intermediate joint real-time operating temperature fault analysis data c" o When it is a temperature fault, the target cable line intermediate joint operation temperature fault screening data set C″ of the target cable line intermediate joint operation temperature fault screening data set c ... o1 to c″ o2 The corresponding cable intermediate joint position number cooperates with the position sensor to collect the spatial coordinates of the cable intermediate joint with temperature fault online, and generates the wind farm cable line operation temperature fault intermediate joint spatial coordinate data set C″′=(c″′ o1 ,Λ,c″′ o2 ), where c″′ o1 Indicates the spatial coordinate data of the wind farm cable line operating temperature fault intermediate joint corresponding to the position of the o1th cable intermediate joint, c″′ o2 Indicates the spatial coordinate data of the wind farm cable line operating temperature fault intermediate joint corresponding to the position of the o2-th cable intermediate joint;

[0120] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time oWhen there is a transmission load fault, the target cable line intermediate joint transmission load fault screening data set E" of the target cable line intermediate joint transmission load fault screening data set e" of the target cable line intermediate joint transmission load fault screening data set o1 to e″ o2 The corresponding cable intermediate joint position number cooperates with the position sensor to collect the spatial coordinates of the cable intermediate joint with the transmission load fault online, and generates the wind farm cable line transmission load fault intermediate joint spatial coordinate data set E″′=(e″′ o1 ,Λ,e″′ o2 ), where e″′ o1 The spatial coordinate data of the wind farm cable line transmission load fault intermediate joint corresponding to the position of the o1th cable intermediate joint, e″′ o2 It represents the spatial coordinate data of the wind farm cable line transmission load fault intermediate joint corresponding to the position of the o2th cable intermediate joint.

[0121] The steps for constructing wind farm cable line operation fault monitoring data and performing wind farm cable operation fault monitoring feedback are as follows:

[0122] S81, when the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When a transmission load fault occurs, the target cable line identification text data L, the wind farm target cable line intermediate joint operating temperature fault screening data set C″, and the wind farm cable line operating temperature fault intermediate joint spatial coordinate data set C″′ are combined to construct the wind farm cable line operating temperature fault monitoring data H1 = (L, C″, C″′);

[0123] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When a transmission load fault occurs, the target cable line identification text data L, the wind farm target cable line intermediate joint operation transmission load fault screening data set E″, and the wind farm cable line operation transmission load fault intermediate joint spatial coordinate data set E″′ are combined to construct the wind farm cable line operation transmission load fault monitoring data H2 = (L, E″, E″′);

[0124] S82, when the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When a transmission load fails, the wind farm cable line operating temperature fault monitoring data H1 is transmitted to the wind power supervision platform through the Internet of Things communication network to perform wind farm cable operation fault monitoring feedback operations;

[0125] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time oWhen a transmission load fault occurs, the wind farm cable line operation transmission load fault monitoring data H2 is transmitted to the wind power supervision platform through the Internet of Things communication network to execute the wind farm cable operation fault monitoring feedback operation.

[0126] Through the cooperation of the wind farm cable line intermediate joint operation fault information screening unit and the wind farm cable line operation fault intermediate joint position information collection unit, intelligent screening of the intermediate joint object information in the wind farm cable line with fault status is realized, and at the same time, the spatial coordinate information of the intermediate joint in the cable line with fault status is accurately collected in cooperation with the position sensor, so as to realize the intelligent positioning of the intermediate joint in the wind farm cable line with fault status; the wind farm cable line operation fault monitoring result feedback unit scientifically constructs the wind farm cable line operation fault monitoring data based on the target cable line identification information, temperature fault analysis parameters, transmission current load fault analysis parameters and the position information of the fault intermediate joint, and independently and efficiently executes the wind farm cable operation fault monitoring feedback operation, so as to realize dynamic and accurate feedback of the wind farm cable temperature fault status and transmission load fault status, thereby improving the safety and reliability of wind power generation.

[0127] Example 2:

[0128] See also Figure 1 - Figure 2 A wind farm cable temperature and load real-time monitoring system is used to implement a wind farm cable temperature and load real-time monitoring method. The system includes a wind farm cable operation temperature fault monitoring module, a wind farm cable operation transmission load fault monitoring module, and a wind farm cable operation fault location feedback module;

[0129] The wind farm cable operation temperature fault monitoring module includes a target cable line identification information acquisition unit, a different cable line cable product information storage unit, a target cable line cable product information search unit, a different cable product normal operating temperature range storage unit, a target cable line normal operating temperature range analysis unit, a target cable line intermediate joint real-time operation temperature acquisition unit, and a target cable line intermediate joint real-time operation temperature fault status analysis unit;

[0130] a target cable line identification information acquisition unit, which collects target cable line identification text data through a wind power supervision platform; a different cable line cable product information storage unit, which is used to store different cable line cable product text data; a target cable line cable product information search unit, which is used to search and process the cable product information of the target cable line in the wind farm based on the target cable line identification text data and the different cable line cable product text data, and generate the target cable line cable product text data; a different cable product normal operating temperature interval storage unit, which is used to store different cable product normal operating temperature intervals; a target cable line normal operating temperature interval analysis unit, which analyzes and processes the normal operating temperature interval of the target cable line in the wind farm based on the target cable line cable product text data and the different cable product normal operating temperature intervals, and generates the target cable line normal operating temperature interval; a target cable line intermediate joint real-time operating temperature acquisition unit, which collects the real-time operating temperature data of the target cable line intermediate joint through a fiber grating temperature sensor; a target cable line intermediate joint real-time operating temperature fault state analysis unit, which analyzes and processes the real-time operating temperature fault state of the target cable line intermediate joint based on the real-time operating temperature data of the target cable line intermediate joint and the target cable line normal operating temperature interval, and generates the target cable line intermediate joint real-time operating temperature fault analysis data;

[0131] The wind farm cable operation transmission load fault monitoring module includes a cable normal operation transmission load interval storage unit, a target cable line normal operation transmission load interval search unit, a target cable line intermediate joint real-time operation transmission load acquisition unit, and a target cable line intermediate joint real-time operation transmission load fault state analysis unit;

[0132] The cable normal operation transmission load interval storage unit is used to store the cable normal operation transmission load interval; the target cable line normal operation transmission load interval search unit performs normal operation transmission load interval search processing of the target cable line in the wind farm according to the cable product information and the real-time operating temperature parameters of the intermediate joint of the target cable line and the cable normal operation transmission load interval, and generates the target cable line normal operation transmission load interval; the target cable line intermediate joint real-time operation transmission load acquisition unit collects the target cable line intermediate joint real-time operation transmission load data through the current sensor; the target cable line intermediate joint real-time operation transmission load fault state analysis unit performs real-time operation transmission load fault state analysis processing of the target cable line intermediate joint according to the target cable line intermediate joint real-time operation transmission load data and the target cable line normal operation transmission load interval, and generates the target cable line intermediate joint real-time operation transmission load fault analysis data;

[0133] The wind farm cable operation fault location feedback module includes a wind farm cable line intermediate joint operation fault information screening unit, a wind farm cable line operation fault intermediate joint location information collection unit, and a wind farm cable line operation fault monitoring result feedback unit;

[0134] The wind farm cable line intermediate joint operation fault information screening unit performs real-time operation fault information screening of the target cable line intermediate joint based on the real-time operation temperature and transmission load fault analysis information of the target cable line intermediate joint, and generates the wind farm target cable line intermediate joint operation fault screening data; the wind farm cable line operation fault intermediate joint position information collection unit collects the wind farm cable line operation fault intermediate joint spatial coordinate data based on the wind farm target cable line intermediate joint operation fault screening data in cooperation with the position sensor; the wind farm cable line operation fault monitoring result feedback unit is used to construct the wind farm cable line operation fault monitoring data and perform the wind farm cable operation fault monitoring feedback operation.

[0135] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for real-time monitoring of cable temperature and load in a wind farm, characterized in that: The method comprises the following steps: S1. Collect target cable line identification text data; S2, performing cable product information search processing on the target cable line of the wind farm based on the target cable line identification text data and the cable product text data of different cable lines, and generating the target cable line cable product text data ; S3. Analyze and process the normal operating temperature interval of the target cable line in the wind farm based on the target cable line cable product text data and the normal operating temperature intervals of different cable products to generate the target cable line normal operating temperature interval; The S3 includes the following steps: S31. Establish a set of normal operating temperature ranges for different cable products , ;in Indicates the The normal operating temperature range of different cable products corresponding to different cable product types, Indicates the maximum number of cable product types, where , and Respectively represent the The normal operating minimum temperature data and the normal operating maximum temperature data of different cable products are and The unit is ℃; S32, the With the As stated in Perform keyword matching on cable product types and search for the The corresponding , and generate the target cable line normal operating temperature range through data identification ; S4, collecting the real-time operating temperature data of the target cable line intermediate joint and performing a real-time operating temperature fault state analysis and processing on the target cable line intermediate joint with the normal operating temperature range of the target cable line, generating the real-time operating temperature fault analysis data of the target cable line intermediate joint, and directly executing step S7 when it is a temperature fault; The S4 comprises the following steps: S41, collecting temperature parameters of the intermediate cable joints of the target cable line of the wind farm online through the fiber Bragg grating temperature sensor and generating a real-time operating temperature data set of the intermediate cable joints of the target cable line. , ;in Indicates the collected Real-time operating temperature data of the target cable line intermediate joint at each cable intermediate joint position, Indicates the maximum number of cable intermediate joint positions. The unit is ℃; S42, the As stated in According to the position of the intermediate cable joints, they are numbered in order and in all and stated Perform temperature value comparison and generate real-time temperature fault analysis data set of target cable line intermediate joints based on the temperature value comparison results ,in Indicates the Real-time operating temperature fault analysis data of the target cable line intermediate joint corresponding to each cable intermediate joint position; when ∈ When the target cable line intermediate joint real-time operating temperature fault analysis data is output There is no temperature fault; when When the target cable line intermediate joint real-time operating temperature fault analysis data is output If it is a temperature fault, go directly to step S7; S5. When there is no temperature fault, searching for the normal operating transmission load interval of the target cable line in the wind farm is performed based on the cable product information of the target cable line, the real-time operating temperature parameters of the intermediate joints, and the normal operating transmission load interval of the cable, to generate the normal operating transmission load interval of the target cable line; The S5 comprises the following steps: S51, when the To avoid temperature faults, establish a set of normal transmission load intervals for cables , ;in Indicates the The normal operating transmission load range of the cable corresponding to the operating condition type of the cable line is: Indicates the maximum number of cable line operating condition types, where , and Respectively represent the The minimum transmission load data of the normal operation of the cable and the maximum transmission load data of the normal operation of the cable, and The unit of all is ampere; S52, using the mean formula to As stated in Perform mean value processing to measure the real-time operating temperature average of the intermediate joints of the target cable line ,in The unit is ℃; S53, adopt breadth-first search algorithm to 、 With the As stated in Perform cable line operation condition type character matching to search for the 、 The corresponding , and construct the target cable line normal operation transmission load range ,in , and Respectively represent the The target cable line normal operation minimum transmission load data and the target cable line normal operation maximum transmission load data, and The unit of all is ampere; S6. Collecting real-time transmission load data of the target cable line intermediate joint and performing real-time transmission load fault status analysis on the target cable line intermediate joint in combination with the normal operating transmission load interval of the target cable line to generate real-time transmission load fault analysis data of the target cable line intermediate joint. If no transmission load fault is detected, the wind farm cable operation fault monitoring operation is terminated. The S6 comprises the following steps: S61, collecting the transmission load parameters of the cable intermediate joint position of the target cable line of the wind farm online through the current sensor and generating a real-time transmission load data set of the target cable line intermediate joint. ,in Indicates the collected The target cable line intermediate joint real-time operation transmission load data of the cable intermediate joint position, The unit is ampere; S62, the As stated in According to the position of the intermediate cable joints, they are numbered in order and As stated in and stated Perform transmission load value comparison and generate real-time transmission load fault analysis data set for target cable line intermediate joints based on the transmission load value comparison results ,in Indicates the Real-time transmission load fault analysis data of the target cable line intermediate joint corresponding to each cable intermediate joint position; when ∈ When the target cable line intermediate joint real-time operation transmission load fault analysis data is output If there is no transmission load fault, the wind farm cable operation fault monitoring operation is terminated directly at this time; when When the target cable line intermediate joint real-time operation transmission load fault analysis data is output For transmission load failure; S7. When a temperature fault or a transmission load fault occurs, the real-time operation fault information of the target cable line intermediate joint is screened and processed based on the real-time operation temperature and transmission load fault analysis information of the target cable line intermediate joint, and operation fault screening data of the target cable line intermediate joint in the wind farm is generated, and spatial coordinate data of the wind farm cable line intermediate joint with operation fault is collected; The S7 comprises the following steps: S71, when the When the fault is temperature, the BERT language model algorithm is used in the Search for all the temperature fault analysis results for temperature faults , and construct a wind farm target cable line intermediate joint operating temperature fault screening data set , ,in Indicates the The wind farm target cable line intermediate joint operating temperature fault screening data corresponding to the cable intermediate joint position, Indicates the The wind farm target cable line intermediate joint operating temperature fault screening data corresponding to the cable intermediate joint position; When the When the power transmission load fails, the BERT language model algorithm is used in the Search for all the transmission load fault analysis results of the transmission load fault , and construct a wind farm target cable line intermediate joint operation transmission load fault screening data set , ,in Indicates the The transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the cable intermediate joint position is Indicates the The transmission load fault screening data of the wind farm target cable line intermediate joint operation corresponding to the cable intermediate joint position; S72, when the In case of temperature fault, As stated in to The corresponding cable intermediate joint position number cooperates with the position sensor to collect the spatial coordinates of the cable intermediate joint with temperature fault online, and generates the spatial coordinate data set of the wind farm cable line operation temperature fault intermediate joint ,in Indicates the The spatial coordinate data of the wind farm cable line operating temperature fault intermediate joint corresponding to the position of the cable intermediate joint, Indicates the The spatial coordinate data of the wind farm cable line operation temperature fault intermediate joint corresponding to the position of the cable intermediate joint; When the When the transmission load fails, As stated in to The corresponding cable intermediate joint position number cooperates with the position sensor to collect the spatial coordinates of the cable intermediate joint with the transmission load fault online, and generates the spatial coordinate data set of the wind farm cable line transmission load fault intermediate joint ,in Indicates the The spatial coordinate data of the wind farm cable line transmission load fault intermediate joint corresponding to the position of the cable intermediate joint, Indicates the The spatial coordinate data of the wind farm cable line transmission load fault intermediate joint corresponding to the position of the cable intermediate joint; S8. Constructing wind farm cable line operation fault monitoring data and performing wind farm cable operation fault monitoring feedback operations; The S8 comprises the following steps: S81, when the When the transmission load fails, the 、 、 Combine data to construct wind farm cable line operating temperature fault monitoring data ; When the When the transmission load fails, the 、 、 Combine data to construct wind farm cable line operation transmission load fault monitoring data ; S82, when the When the transmission load fails, the Transmitted via the IoT communication network to the wind power supervision platform to perform wind farm cable operation fault monitoring and feedback operations; When the When the transmission load fails, the The data is transmitted to the wind power supervision platform through the Internet of Things communication network to perform wind farm cable operation fault monitoring and feedback operations.

2. A method for real-time monitoring of cable temperature and load in a wind farm according to claim 1, characterized in that: Said S1 comprises the following steps: S11. Input the identification text information of the target cable line to be monitored in the wind farm online through the data collection dialog box of the wind power supervision platform, and generate the target cable line identification text data. .

3. A method for real-time monitoring of cable temperature and load in a wind farm according to claim 2, characterized in that: The S2 comprises the following steps: S21. Establish text data sets for different cable lines and cable products , ;in Indicates the The cable product text data of different cable lines corresponding to the wind farm cable lines, Indicates the maximum number of cable lines in a wind farm; S22, using XGBoost algorithm to With the As stated in Perform cable line identification character matching to search for the The corresponding , and generate the target cable line cable product text data through data identification .

4. A method for real-time monitoring of cable temperature and load in a wind farm according to claim 1, characterized in that: The S32 includes the following steps: S321, initialize parameters, update temperature, search the number of crow populations, maximum number of iterations, flight distance ; S322, initialize the temperature to search for the crow individual in the Initial position and memory in the search space, Temperature-searching crows are randomly distributed in a space of dimension The In the search space; in the first iteration, assume that the temperature search crow individual is in the Search the search space for Matching the Food and hidden in the initial location; S323, calculate the individual fitness value of each temperature-searching crow, that is, calculate the With the The search space The fitness value of S324, update the temperature to search for crow individuals in the Position in the search space; S325, determine the feasibility of the new position, determine the feasibility of the new position of each temperature-searching crow individual; if the new position of the temperature-searching crow individual is feasible, the temperature-searching crow individual will update its position, that is, in the Search the search space for Matching the , the temperature search crow individual is updated to the matching successful Otherwise, the temperature-seeking crow individual stays at the current location and does not move to the new location; S326, evaluate the fitness value of the new position, calculate the fitness value of each temperature-searching crow's new position, that is, calculate the fitness value of the new position of the temperature-searching crow. Search space described With the new location The fitness value of S327, update memory, if the fitness value of the new position of the temperature-searching crow is greater than the fitness value of the initial position in the memory, the temperature-searching crow updates its memory through the new position, otherwise it does not update its memory; that is, in the Search the search space for The one with the largest fitness value ; S328, when the maximum number of iterations is met, output the The best match ; S329, the output in step S328 After data identification, the ,in , and Respectively represent the normal operating temperature range of the target cable line The target cable line normal operation minimum temperature data and the target cable line normal operation maximum temperature data, and The unit is ℃.

5. A wind farm cable temperature and load real-time monitoring system, used to implement a wind farm cable temperature and load real-time monitoring method according to any one of claims 1 to 4, characterized in that: The system comprises a wind farm cable operation temperature fault monitoring module, a wind farm cable operation power transmission load fault monitoring module, and a wind farm cable operation fault positioning feedback module.

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