Wind power plant cable temperature and load real-time monitoring method and system

Abstract

The invention relates to the technical field of wind power plant cable fault detection, and discloses a wind power plant cable temperature and load real-time monitoring method and system, and the system comprises a wind power plant cable operation temperature fault monitoring module, a wind power plant cable operation power transmission load fault monitoring module, and a wind power plant cable operation fault positioning feedback module. The real-time operating temperature parameters of the intermediate joint of the target cable line are dynamically collected on line through a fiber grating temperature sensor, and the real-time operating temperature fault state intelligent analysis of the intermediate joint of the target cable line is carried out in combination with numerical analysis and the normal operating temperature interval of the target cable line; and dynamically and intelligently identifying the fault state of the real-time operation power transmission load of the intermediate joint of the target cable line by combining the real-time operation power transmission load parameters of the online target cable line intermediate joint with numerical analysis and the normal operation power transmission load interval of the target cable line.

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] A wind farm is a multi-branch power transmission and transformation system with complex topology and short-distance cables. It requires a large number of high and low voltage electrical equipment and cable connections. The safety of the cable intermediate joints and the cable terminals in the transfer box is particularly important. Since the cable intermediate joints are crimped on site by the staff, they are affected by factors such as the early and late season change, biological damage, line overload, the crimping skill level of the construction staff, the high soil humidity and high salinity in the area where the buried cables are located. Overheating and aging of the insulation layer often lead to cable head breakdown and discharge accidents due to reduced insulation capacity, which poses a serious threat to the safe production of wind farms. Therefore, accurate monitoring of the temperature parameters and transmission load parameters of the cable intermediate joints can realize scientific monitoring of the fault status of the cable intermediate joints in wind farms; however, the existing wind farm cable monitoring system cannot realize intelligent identification of the operating temperature fault status and operating transmission load fault status of the cable intermediate joints, nor can it provide accurate online feedback on the operating fault monitoring results of the cable intermediate joints.

[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 cable temperature change trend can be predicted, the cable can be ventilated and cooled, and a fire warning operation can be performed according to 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 issues to be 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 state and operating transmission load fault state of the cable intermediate joint, and cannot provide accurate online feedback on the cable intermediate joint operating fault monitoring results, the above purpose of accurately collecting the target cable line identification information, accurately searching the target cable line cable product information, scientifically analyzing the normal operating temperature range parameters of the target cable, online collecting the real-time operating temperature parameters of the target cable intermediate joint, intelligently analyzing the real-time operating temperature fault state of the target cable intermediate joint, accurately searching the normal operating transmission load range parameters of the target cable, online collecting the real-time operating transmission load parameters of the target cable intermediate joint, intelligently analyzing the real-time operating transmission load fault state of the target cable intermediate joint, and accurately locating and feedbacking the cable intermediate joint operating fault monitoring information is achieved.

[0006] (II) Technical solution

[0007] The present invention is implemented by 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, collecting target cable line identification text data;

[0009] S2, performing cable product information search and processing of the target cable line of the wind farm according to the target cable line identification text data and the cable product text data of different cable lines, and generating the cable product text data of the target cable line;

[0010] S3, performing normal operating temperature interval analysis and processing 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, and generating the normal operating temperature interval of the target cable line;

[0011] S4, collecting the real-time operating temperature data of the target cable line intermediate joint and performing real-time operating temperature fault state analysis and processing of the target cable line intermediate joint with the normal operating temperature range of the target cable line, generating 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, the normal operating transmission load interval of the target cable line of the wind farm is searched and processed according to 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, and the normal operating transmission load interval of the target cable line is generated;

[0013] S6, collecting the real-time transmission load data of the target cable line intermediate joint and performing real-time transmission load fault state analysis and processing on the target cable line intermediate joint with the normal operation transmission load interval of the target cable line, generating real-time transmission load fault analysis data of the target cable line intermediate joint, and ending the cable operation fault monitoring operation of the wind farm when there is no transmission load fault;

[0014] S7. When it is a temperature fault or a transmission load fault, the real-time operation fault information of the target cable line intermediate joint is screened and processed according to the real-time operation temperature of the target cable line intermediate joint and the transmission load fault analysis information, and the operation fault screening data of the target cable line intermediate joint of the wind farm is generated and the spatial coordinate data of the wind farm cable line operation fault intermediate joint 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 operation steps of collecting the 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 cable product text data of the target cable line are as follows:

[0019] S21. Establish text data sets of 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, 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 analysis and processing of the target cable line in the wind farm is performed 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 normal operating temperature interval of the target cable line 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 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 ℃;

[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 of the different cable products 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 and generate the target cable line normal operating temperature range The specific steps are as follows:

[0024] S321, initializing parameters, updating the temperature, searching the number of 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 N temperature search crow individuals are randomly distributed 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, it is assumed that the temperature search crow individual searches for the cable product text data corresponding to 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 that match v Food and hidden in the initial location;

[0026] S323, calculating the individual fitness value of each temperature-searching crow, that is, calculating the text data of the target cable line cable product 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, updating 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, and 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 t-th iteration temperature search crow individual i in the search space of the normal operating temperature range set B of the different cable products, 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 the different cable products in the t-th iteration, It represents the food hiding position 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 corresponding to 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 that match 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 corresponding to 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 that match 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 position and does not move to the new position;

[0029] S326, evaluate the fitness value of the new position, calculate the fitness value of each temperature-searching 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. The 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 cable product text data corresponding to the target cable line The most suitable normal operating temperature range of the different cable products b v ;

[0032] S329, the normal operating temperature range b of the different cable products output in step S328 v The target cable line normal operating temperature range is generated 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 and 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 it is a temperature fault, 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 set 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 o-th 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 real-time operating temperature fault analysis data c′ of the intermediate joint of the target cable line is output. o It is a temperature fault. In this case, directly execute step S7.

[0038] Preferably, when there is no temperature fault, the normal operating transmission load interval of the target cable line of the wind farm is searched and processed according to 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, and the operating steps of 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 of the cable 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 interval 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 the operating conditions of different types of cable lines, 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 mean of the intermediate joint 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 of the cable 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 of the cable is d p , and construct the normal operation transmission load interval d′ of the target cable line 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 is ampere.

[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 and processing of the target cable line intermediate joint is performed with the normal operation 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 of ending the cable operation fault monitoring operation of the wind farm 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 is used to calculate the target cable line intermediate joint real-time operation transmission load data set E. o The cable intermediate joint positions are numbered in order and are in accordance with the normal operation transmission load interval d′ of the target cable line. 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 numerical 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 o-th 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 real-time transmission load fault analysis data e′ of the target cable line intermediate joint 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 real-time transmission load fault analysis data e′ of the target cable line intermediate joint is output. o It is a transmission load fault.

[0047] Preferably, when it is a temperature fault or a power transmission load fault, the real-time operation fault information of the target cable line intermediate joint is screened and processed according to the real-time operation temperature of the target cable line intermediate joint and the power transmission load fault analysis information, and the operation steps of generating the operation fault screening data of the target cable line intermediate joint of the wind farm and collecting the 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 it 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' whose temperature fault analysis result is a 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 represents 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 o1th position, c″ o2 Indicates the operating temperature fault screening data of the intermediate joint of the target cable line of the wind farm corresponding to the position of the intermediate joint of the cable of the 2nd order;

[0049] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When the load is faulty, 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 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the position of the o1th cable intermediate joint, e″ o2 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint operation 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 generate 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 wind farm target cable line intermediate joint operation transmission load fault screening data set E″ is used according to the wind farm target cable line intermediate joint operation transmission load fault screening data set E″. 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 operation 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 there is a transmission load fault, the target cable line identification text data L, the wind farm target cable line intermediate joint operation temperature fault screening data set C″, and the wind farm cable line operation temperature fault intermediate joint space coordinate data set C″′ are combined to construct the wind farm cable line operation 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 space 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 execute the 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 positioning 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 is used to collect 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 the different cable line cable product text data, and generate the 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 the 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 intermediate joint of the target cable line acquires the real-time operating temperature data of the intermediate joint of the target cable line through the fiber grating temperature sensor; the real-time operating temperature fault state analysis unit of the intermediate joint of the target cable line performs the real-time operating temperature fault state analysis of the intermediate joint of the target cable line according to the real-time operating temperature data of the intermediate joint of the target cable line and the normal operating temperature interval of the target cable line to generate the real-time operating temperature fault analysis data of the intermediate joint of the target cable line;

[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 of the target cable line and the real-time operation temperature parameters of the intermediate joint 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 the 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 the 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 according to the real-time operation temperature of the target cable line intermediate joint and the transmission load fault analysis information, 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 according to 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.

[0064] (III) 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 the intelligent search algorithm with the scientific 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, so as to achieve 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, and improve 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 the numerical analysis with the normal operating temperature range of the target cable line, and intelligently analyze the real-time operating temperature fault state of the intermediate joint of the target cable line, so as to achieve 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 can be 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 current sensors 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 can realize 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 wind farm cable line with fault status, and cooperating with the position sensor to accurately collect the spatial coordinate information of the intermediate joints in the cable line with fault status, the intelligent positioning of the intermediate joints in the wind farm cable line with fault status is realized; based on the target cable line identification information, temperature fault analysis parameters, transmission current load fault analysis parameters and the location 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 A module schematic diagram of a wind farm cable temperature and load real-time monitoring system provided by the present invention;

[0070] Figure 2 The present invention provides a flow chart of a method for real-time monitoring of cable temperature and load in a wind farm. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0073] Embodiment 1:

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

[0075] S1, collecting target cable line identification text data;

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

[0077] S3, 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 of the wind farm is analyzed and processed to generate the normal operating temperature range of the target cable line;

[0078] S4, collecting the real-time operating temperature data of the target cable line intermediate joint and performing real-time operating temperature fault state analysis and processing of the target cable line intermediate joint with the normal operating temperature range of the target cable line, generating 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;

[0079] S5. When there is no temperature fault, the normal operating transmission load interval of the target cable line of the wind farm is searched and processed according to 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, and the normal operating transmission load interval of the target cable line is generated;

[0080] S6, collecting the real-time transmission load data of the target cable line intermediate joint and performing real-time transmission load fault state analysis and processing on the target cable line intermediate joint with the normal operation transmission load interval of the target cable line, generating real-time transmission load fault analysis data of the target cable line intermediate joint, and ending the cable operation fault monitoring operation of the wind farm when there is no transmission load fault;

[0081] S7. When it is a temperature fault or a transmission load fault, the real-time operation fault information of the target cable line intermediate joint is screened and processed according to the real-time operation temperature of the target cable line intermediate joint and the transmission load fault analysis information, and the operation fault screening data of the target cable line intermediate joint of the wind farm is generated and the spatial coordinate data of the wind farm cable line operation fault intermediate joint 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, which 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 according to the target cable line identification text data and the cable product text data of different cable lines. The operation steps of generating the cable product text data of the target cable line are as follows:

[0086] S21. Establish text data sets of 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 of 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 the 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 of different cable products b 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 range of different cable products indicates 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 v Perform keyword matching of cable product types to search for text data of target cable lines and cable products Corresponding normal operating temperature range of different cable products b 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 temperature, searching the number of 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 individuals in the search space of the normal operating temperature range set B of different cable products, and 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 individuals search for the cable product text data 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 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 The normal operating temperature range b of different cable products in the search space is the set B of normal operating temperature ranges of different cable products. v The fitness value of

[0094] S324. Update the position of the temperature search crow individual in the search space of the normal operating temperature range set B 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 t-th iteration temperature search crow individual i in the search space of the normal operating temperature range set B of different cable products, 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 tth iteration, It represents the food hiding location of the crow individual i in the search space of different normal operating temperature intervals of cable products in the t-th iteration temperature search. That is, the crow individual i in the t-th iteration temperature search searches for the cable product text data related to the target cable line in the search space of different normal operating temperature intervals of cable products in the B-th search space. Normal operating temperature range 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 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 position and does not move to the new position;

[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 of different cable products at new location b 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 normal operating temperature range set B of different cable products The 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 of different cable products v ;

[0099] 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 ℃.

[0100] 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 the real-time operating temperature fault analysis data of the target cable line intermediate joint. When it is a temperature fault, directly execute the operation steps of 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 in and 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 o-th 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 real-time operating temperature fault analysis data c′ of the intermediate joint of the target cable line is output. o It is a temperature fault. In this case, 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 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; 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 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. The system can accurately match the normal operating temperature range parameters required for the temperature fault analysis of the intermediate joints in the cable lines 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 lines and the real-time operating temperature fault status analysis unit for the intermediate joints in the target cable lines cooperate with each other, and the real-time operating temperature parameters of the intermediate joints in the target cable lines are dynamically acquired online by the fiber grating temperature sensor, and the real-time operating temperature fault status of the intermediate joints in the target cable lines is intelligently analyzed by combining the numerical analysis with the normal operating temperature range of the target cable lines, thereby realizing efficient and accurate identification of the real-time operating temperature faults of the intermediate joints in the target cable lines, thereby improving the efficiency and reliability of the cable temperature fault monitoring operation 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 and processed according to 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 operation 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 operation temperature fault analysis data c′ o In order to avoid temperature fault, the normal operation of the cable 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 interval 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 are shown in the figure. The cable normal operation transmission load interval represents the standard transmission load interval data under the operating conditions of different types of cable lines. 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 set C of the target cable line intermediate joint real-time operating temperature data c. o Perform mean value processing to measure the real-time operating temperature mean of the intermediate joint of the target cable line in The unit is ℃;

[0109] S53, using the breadth-first search algorithm to search the target cable line cable product text data Real-time operating temperature average of the intermediate joint 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 the cable line operating condition type to search for the target cable line cable product text data Real-time operating temperature average of the intermediate joint of the target cable line The corresponding normal operation transmission load interval of the cable is d p , and construct the normal operation transmission load interval d′ of the target cable line 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 is ampere.

[0110] Collect the real-time transmission load data of the target cable line intermediate joint and analyze the real-time transmission load fault status of the target cable line intermediate joint with the normal operation 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 to end the cable operation fault monitoring operation of this wind farm 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 According to the cable intermediate joint position number, the target cable line is in normal operation 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 numerical 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 real-time transmission load fault analysis data e′ of the target cable line intermediate joint 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 real-time transmission load fault analysis data e′ of the target cable line intermediate joint is output. o It is a transmission load fault.

[0115] Through the target cable line normal operation transmission load interval search unit, according to the cable product information of the target cable line and the real-time operation temperature parameters of the intermediate joint, combined with the intelligent search algorithm and the normal operation transmission load interval of the cable, the normal operation transmission load interval required for the transmission load fault analysis of the intermediate joint of the target cable line is dynamically and accurately searched, so as to achieve accurate matching of the normal operation transmission load interval parameters required for the transmission load fault analysis of the intermediate joint of the cable line based on the cable product type and the real-time operation 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 operation transmission load acquisition unit and the target cable line intermediate joint real-time operation transmission load fault state analysis unit cooperate with each other, and the current sensor is used to combine the real-time operation transmission load parameters of the online target cable line intermediate joint with the numerical analysis and the normal operation transmission load interval of the target cable line to perform dynamic intelligent identification of the real-time operation 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 it is a temperature fault or a transmission load fault, the real-time operation fault information of the target cable line intermediate joint is screened and processed according to the real-time operation temperature and transmission load fault analysis information of the target cable line intermediate joint, and the operation steps of generating the operation fault screening data of the target cable line intermediate joint of 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 temperature fault occurs, 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 being a 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 represents 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 o1th position, c″ o2 Indicates the operating temperature fault screening data of the intermediate joint of the target cable line of the wind farm corresponding to the position of the intermediate joint of the cable of the 2nd order;

[0118] When the target cable line intermediate joint runs the transmission load fault analysis data e′ in real time o When the load is faulty, the BERT language model algorithm is used to search for all the target cable line intermediate joints real-time transmission load fault analysis data set E′ whose transmission load fault analysis results are transmission load faults. 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 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the position of the o1th cable intermediate joint, e″ o2 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint operation 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 wind farm target cable line intermediate joint operation temperature fault screening data set C″ of the wind farm target cable line intermediate joint operation temperature fault screening data 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 generate 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 wind farm target cable line intermediate joint operation transmission load fault screening data set E" is used according to the wind farm target cable line intermediate joint operation transmission load fault screening data e" 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 operation 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 operations 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 there is a transmission load fault, the target cable line identification text data L, the wind farm target cable line intermediate joint operation temperature fault screening data set C″, and the wind farm cable line operation temperature fault intermediate joint space coordinate data set C″′ are combined to construct the wind farm cable line operation 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 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 space 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 the 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 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 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 faulty intermediate joint, and independently and efficiently performs the wind farm cable operation fault monitoring feedback operation, so as to realize the 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.

[0127] Embodiment 2:

[0128] See also Figure 1 - Figure 2 , 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 positioning 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 state 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 the different cable product normal operating temperature intervals; a target cable line normal operating temperature interval analysis unit, which performs normal operating temperature interval analysis and processing 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 target cable line intermediate joint real-time operating temperature data through a fiber grating temperature sensor; a target cable line intermediate joint real-time operating temperature fault state analysis unit, which performs real-time operating temperature fault state analysis and processing of the target cable line intermediate joint based on the target cable line intermediate joint real-time operating temperature data 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] A cable normal operation transmission load interval storage unit is used to store the cable normal operation transmission load interval; a target cable line normal operation transmission load interval search unit performs a normal operation transmission load interval search process of the target cable line in the wind farm according to the cable product information of the target cable line and the real-time operation temperature parameters of the intermediate joint and the cable normal operation transmission load interval, and generates the target cable line normal operation transmission load interval; a 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 a current sensor; a target cable line intermediate joint real-time operation transmission load fault state analysis unit performs a target cable line intermediate joint real-time operation transmission load fault state analysis process 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 according to the real-time operation temperature of the target cable line intermediate joint and the transmission load fault analysis information, 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 according to 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] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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, collecting target cable line identification text data; S2, performing cable product information search and processing of the target cable line of the wind farm according to the target cable line identification text data and the cable product text data of different cable lines, and generating the cable product text data of the target cable line; S3, performing normal operating temperature interval analysis and processing 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, and generating the normal operating temperature interval of the target cable line; S4, collecting the real-time operating temperature data of the target cable line intermediate joint and performing real-time operating temperature fault state analysis and processing of the target cable line intermediate joint with the normal operating temperature range of the target cable line, generating 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; S5. When there is no temperature fault, the normal operating transmission load interval of the target cable line of the wind farm is searched and processed according to 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, and the normal operating transmission load interval of the target cable line is generated; S6, collecting the real-time transmission load data of the target cable line intermediate joint and performing real-time transmission load fault state analysis and processing on the target cable line intermediate joint with the normal operation transmission load interval of the target cable line, generating real-time transmission load fault analysis data of the target cable line intermediate joint, and ending the cable operation fault monitoring operation of the wind farm when there is no transmission load fault; S7. When it is a temperature fault or a transmission load fault, the real-time operation fault information of the target cable line intermediate joint is screened and processed according to the real-time operation temperature of the target cable line intermediate joint and the transmission load fault analysis information, and the operation fault screening data of the target cable line intermediate joint of the wind farm is generated and the spatial coordinate data of the wind farm cable line operation fault intermediate joint is collected; S8. Construct wind farm cable line operation fault monitoring data and perform wind farm cable operation fault monitoring 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: The S1 comprises the following steps: 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.

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 of 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; S22, using XGBoost algorithm to compare L with a in A u Perform cable line identification character matching to search for the a corresponding to the L u , 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 3, characterized in that: The S3 comprises the following steps: 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 ,b v,2 ], b v,1 and b v,2 Respectively represent the b v The normal operating minimum temperature data of different cable products and the normal operating maximum temperature data of different cable products, b v,1 and b v,2 The unit is ℃; S32, the with the b in the b v Perform keyword matching of cable product types and search for the following The corresponding b v , and generate the target cable line normal operating temperature range through data identification Execute and generate the target cable line normal operating temperature range The specific steps are as follows: S321, initializing parameters, updating the temperature, searching the number of crow populations, the maximum number of iterations, and the flight distance Λ; S322, initializing the initial position and memory of the temperature-searching crow individuals in the B search space, and N temperature-searching crow individuals are randomly distributed in the B search space with a spatial dimension of θ; in the first iteration, it is assumed that the temperature-searching crow individuals search for the temperature in the B search space that is consistent with the Matching the b v Food and hidden in the initial location; S323, calculate the individual fitness value of each temperature-searching crow, that is, calculate the and the b in the B search space v The fitness value of S324, updating the position of the temperature search crow individual in the B 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, search for a new position in the B search space that is consistent with the Matching the b v , the temperature search crow individual is updated to the b that matches successfully v otherwise, the temperature-seeking crow individual stays at the current position and does not move to the new position; S326, evaluate the fitness value of the new position, calculate the fitness value of each temperature-searching crow's individual new position, that is, calculate the fitness value of the new position in the B search space With the new position of the b v The fitness value of 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 fitness value of the initial position in the B search space. The b with the largest fitness value v ; S328. When the maximum number of iterations is met, output the same as described above. The best match for the b v ; S329, the b output in step S328 v The data is identified and generated 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 method for real-time monitoring of cable temperature and load in a wind farm according to claim 4, characterized in that The S4 comprises the following steps: 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 ℃; S42, the c in the C o The cable intermediate joints are numbered in order according to their positions. in all and stated 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 o-th cable intermediate joint position; when When , the real-time operating temperature fault analysis data c′ of the target cable line intermediate joint is output o There is no temperature fault; When c o When , the real-time operating temperature fault analysis data c′ of the target cable line intermediate joint is output o It is a temperature fault. In this case, directly execute step S7.

6. A method for real-time monitoring of cable temperature and load in a wind farm according to claim 5, characterized in that: The S5 comprises the following steps: S51, when the c′ o In order to avoid temperature fault, the normal operation of the cable 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 interval of the cable corresponding to the pth cable line operation condition type, ρ represents the maximum number of cable line operation condition types, where d p =[d p,1 ,d p,2 ],d p,1 and d p,2 Respectively represent the d p 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, d p,1 and d p,1 The unit of all is ampere; S52, using the mean formula to calculate the value of c in C o Perform mean value processing to measure the real-time operating temperature mean of the intermediate joint of the target cable line in The unit is ℃; S53, using a breadth-first search algorithm to Said With the D in the D p Perform character matching on the cable line operation condition type and search for the Said The corresponding d p , and construct the normal operation transmission load interval d′ of the target cable line p , where d′ p =[d′ p,1 ,d′ p,2 ],d′ p,1 and d′ p,2 Respectively represent the d′ 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 is ampere.

7. A method for real-time monitoring of cable temperature and load in a wind farm according to claim 6, characterized in that: The S6 comprises the following steps: 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, S62, the e in the E o According to the position of the cable intermediate joints, they are numbered in order and d′ p The d′ p,1 and the d′ p,2 Perform transmission load numerical 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 o-th cable intermediate joint position; When e o ∈d′ p When the target cable line intermediate joint real-time 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; When e o d′ p When the target cable line intermediate joint real-time transmission load fault analysis data e' is output o It is a transmission load fault.

8. A method for real-time monitoring of cable temperature and load in a wind farm according to claim 7, characterized in that: The S7 comprises the following steps: S71, when the c′ o When it is a temperature fault, the BERT language model algorithm is used to search for all the c's whose temperature fault analysis results are temperature faults in the 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 represents 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 o1th position, c″ o2 Indicates the operating temperature fault screening data of the intermediate joint of the target cable line of the wind farm corresponding to the position of the intermediate joint of the cable of the 2nd order; When the e′ o When the load is faulty, the BERT language model algorithm is used to search for all e's whose load fault analysis results are faulty in E'. 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 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint corresponding to the position of the o1th cable intermediate joint, e″ o2 Indicates the transmission load fault screening data of the wind farm target cable line intermediate joint operation corresponding to the o2-th cable intermediate joint position; S72, when the c′ o In case of temperature failure, according to the c" in 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 generate the wind farm cable line operation temperature fault intermediate joint spatial coordinate data set C″′′=(c″′ o1 ,Λ,c″′2), 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; When the e′ o When the transmission load fails, according to the e" in E" 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 operation 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.

9. A method for real-time monitoring of cable temperature and load in a wind farm according to claim 8, characterized in that: The S8 comprises the following steps: S81, when the e′ o When there is a transmission load fault, the L, C″, and C″′ are combined to construct wind farm cable line operating temperature fault monitoring data H1=(L, C″, C″′); When the e′ o When there is a transmission load fault, the L, E″, and E″′ are combined to construct wind farm cable line operation transmission load fault monitoring data H2=(L, E″, E″′); S82, when the e′ o When the transmission load fails, the H1 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; When the e′ o When the transmission load fails, the H2 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.

10. 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 9, 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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