Cable parameter testing device based on optical fiber sensing

Abstract

The invention relates to the technical field of cable parameter testing, and discloses a cable parameter testing device based on optical fiber sensing. The device comprises a temperature module for acquiring temperature parameters and performing temperature testing, a strain module for acquiring strain parameters and performing strain testing, a vibration module for acquiring vibration parameters and performing vibration testing, a partial discharge module for testing partial discharge parameters and performing partial discharge testing, and a transmission module for optimizing a transmission sequence. According to the application, temperature parameter acquisition and temperature test are realized through the temperature module, strain parameter acquisition and strain test are realized through the strain module, vibration parameter acquisition and vibration test are realized through the vibration module, and partial discharge parameter acquisition and partial discharge test are realized through the partial discharge module. And the transmission sequence of the parameters is optimized through the transmission module, so that comprehensive testing of the cable parameters is realized.

Description

[0001] The present application relates to the technical field of cable parameter testing, and in particular to a cable parameter testing device based on optical fiber sensing. Background Art

[0002] Cables are the key carrier of power transmission, and accurate testing of cable parameters is an important part of ensuring the safe operation of the power system. Traditional cable testing devices are susceptible to electromagnetic interference, and contact testing may cause damage to the cable.

[0003] Fiber optic sensing has the characteristics of anti-electromagnetic interference, high temperature resistance, corrosion resistance, high sensitivity and the ability to achieve distributed measurement, and is suitable for cable parameter testing.

[0004] Chinese Patent No. CN202111075915.5 discloses a cable fault prediction method, device, equipment and storage medium for optical fiber temperature measurement, the method comprising: obtaining the cable temperature parameters of the cable collected by the optical fiber temperature measurement device; determining the environmental parameters of the cable location point and the historical fault parameters within a preset range, the environmental parameters including any one or more of the ambient temperature, ambient humidity and ambient air pressure, the historical fault parameters including the historical fault point, historical fault time and historical fault factors; determining the predicted failure rate of the cable according to the cable temperature parameters, the environmental parameters and the historical fault parameters, and providing a prompt message when the predicted failure rate meets the preset conditions. In this scheme, relatively few conditions affecting the operation of the cable are considered, so it is impossible to comprehensively detect the actual state of the cable.

[0005] Therefore, there is an urgent need for a technology that can test cables more comprehensively. Summary of the invention

[0006] The purpose of the present application is to provide a cable parameter testing device based on optical fiber sensing to solve the technical problems raised in the above background technology.

[0007] To achieve the above objectives, this application discloses the following technical solutions:

[0008] A cable parameter testing device based on optical fiber sensing, comprising:

[0009] A temperature module, wherein the temperature module is configured to: collect temperature parameters of the cable, perform a temperature test on the cable based on the temperature parameters, and upload the temperature test result;

[0010] A strain module, wherein the strain module is configured to: collect strain parameters of the cable, perform strain testing on the cable based on the strain parameters, and upload the strain testing results;

[0011] A vibration module, wherein the vibration module is configured to: collect vibration parameters of the cable, perform a vibration test on the cable based on the vibration parameters, and upload the vibration test result;

[0012] A partial discharge module, wherein the partial discharge module is configured to: collect partial discharge parameters of the cable, perform a partial discharge test on the cable based on the partial discharge parameters, and upload the partial discharge test result;

[0013] A transmission module, wherein the transmission module is configured to: obtain the temperature test result, the strain test result, the vibration test result and the partial discharge test result, and determine a transmission priority, wherein the transmission priority is used to determine a transmission order of the temperature parameter, the strain parameter, the vibration parameter and the partial discharge parameter.

[0014] Preferably, the temperature parameters of the acquisition cable specifically include:

[0015] The cables are temperature zoned based on the temperature data of the environment in which the cables are located. Cables whose relative temperature difference of the environment in which the cables are located is less than or equal to Temp0 are divided into the same temperature zone, where Temp0 is a preset temperature zone threshold.

[0016] Preferably, the method of performing a temperature test on the cable based on the temperature parameter and uploading the temperature test result specifically comprises the following steps:

[0017] A1: Obtain several cables in the same temperature zone, and obtain the average temperature parameters of each cable based on optical fiber sensing, and express it as Temp i_j , where i is the cable number and j is the temperature zone number;

[0018] A2: Calculate the average temperature parameters of several cables in the same temperature zone in step A1, and the calculation formula for the average temperature parameters of several cables in the same temperature zone is: Among them, N EC The number of cables in the same temperature zone. is the sum of the average temperature parameters of several cables in the same temperature zone. is the average temperature parameter of several cables in the temperature zone numbered j;

[0019] A3: Satisfaction The cable numbered i_j is captured, and the cable is segmented by temperature based on optical fiber sensing. The cable segments with a relative temperature difference less than or equal to Temp1 are divided into the same temperature segment and expressed as Temp. α_i_j , where α is the temperature segment number on the cable, and Temp1 is the preset temperature segment threshold;

[0020] A4: Calculate and judge | Temp α_i_j -Temp (α-1)_i_j |≥Temp2 is true, if so, set Temp α_i_j and Temp (α-1)_i_j Define as the temperature test result and upload, otherwise repeat steps A1-A4, where Temp2 is the preset temperature test threshold.

[0021] Preferably, the strain parameters of the acquisition cable specifically include:

[0022] The cables are strain zoned based on their types and the corresponding environments. Cables of the same type and whose environmental similarity is greater than or equal to Envi0 are divided into the same strain zone, where Envi0 is a preset strain zone threshold.

[0023] Preferably, the method of performing a strain test on the cable based on the strain parameter and uploading the strain test result specifically comprises the following steps:

[0024] B1: Obtain several cables in the same strain zone, obtain the strain parameters of each cable based on optical fiber sensing, and express them as Stra i_m , where i is the cable number and m is the strain zone number;

[0025] B2: Calculate the average strain parameters of several cables in the same strain partition in step B1, and the calculation formula for the average strain parameters of several cables in the same strain partition is: Among them, N EC is the number of cables in the same strain zone, is the sum of the average strain parameters of several cables in the same strain zone, is the average strain parameter of several cables in the strain partition numbered m;

[0026] B3: Satisfaction The cable numbered i_m is captured, and the cable is strain segmented based on optical fiber sensing. The cable segments with relative strain differences less than or equal to Stra0 are divided into the same strain segment and expressed as Stra β_i_m , where β is the strain segment number on the cable, and Stra0 is the preset strain segment threshold;

[0027] B4: Calculate and judge | Stra β_i_m -Stra (β-1)_i_m |≥Stra1 is true, if so, set Stra β_i_m and Stra (β-1)_i_mDefined as the strain test result and uploaded, otherwise repeat steps B1-B4, where Stra1 is the preset strain test threshold.

[0028] Preferably, the vibration parameters of the acquisition cable specifically include:

[0029] The cables are strain zoned based on their types and the corresponding environments. Cables of the same type and whose environment similarity is greater than or equal to Envi1 are divided into the same vibration zone, where Envi0 is the preset vibration zone threshold.

[0030] The vibration parameters include vibration amplitude and vibration frequency.

[0031] Preferably, the vibration test of the cable is performed based on the vibration parameters, and the vibration test result is uploaded, which specifically includes the following steps:

[0032] C1: Obtain several cables in the same vibration zone, obtain the vibration parameters of each cable based on optical fiber sensing, and express them as Vibr i_n , where i is the cable number and n is the vibration zone number;

[0033] C2: Calculate the average vibration parameters of several cables in the same vibration zone in step C1, and the calculation formula for the average vibration parameters of several cables in the same vibration zone is: Among them, N EC The number of cables in the same vibration zone, is the sum of the average vibration parameters of several cables in the same vibration zone, is the average vibration parameter of several cables in the vibration zone numbered n;

[0034] C3: Satisfaction The cable numbered i_n is captured, and the cable is segmented based on optical fiber sensing. The cable segments with relative vibration difference less than or equal to Vibr0 are divided into the same vibration segment and expressed as Vibr χ_i_n , where χ is the vibration segment number on the cable, and Vibr0 is the preset vibration segment threshold;

[0035] C4: Calculate and judge | Vibr χ_i_n -Vibr (χ-1)_i_n |≥Vibr1 is true, if so, Vibr χ_i_n and Vibr (χ-1)_i_n Define as the vibration test result and upload, otherwise repeat steps C1-C4, where Vibr1 is the preset vibration test threshold.

[0036] Preferably, the partial discharge parameters of the acquisition cable specifically include:

[0037] Conduct partial discharge testing over the entire cable area based on fiber optic sensing;

[0038] The local discharge parameters include discharge amount and discharge repetition rate.

[0039] Preferably, the method of performing a partial discharge test on the cable based on the partial discharge parameters and uploading the partial discharge test result specifically comprises the following steps:

[0040] D1: Obtain the partial discharge parameters of the entire cable based on optical fiber sensing and express them as PD δ_i_q , where δ is the number of iterations of the partial discharge test, i is the cable number, and q is the number of the partial discharge area on the cable numbered i;

[0041] D2: Obtain the function of the partial discharge parameter with respect to the number of iterations of the partial discharge test, and express it as PD δ_i_q =f(δ), wherein f represents a function of the partial discharge parameter with respect to the number of iterations of the partial discharge test;

[0042] D3: Calculate and determine whether f'(δ)>0 is true in the interval [δ-ε,δ]. If so, convert the interval [δ-ε,δ] and the corresponding [PD (δ-ε)_i_q ,PD δ_i_q ] is defined as the partial discharge test result and uploaded, otherwise steps D1-D3 are repeated, wherein ε is a control parameter of the preset number of iterations of the partial discharge test, and f'(δ) is the derivative of the function of the partial discharge parameter with respect to the number of iterations of the partial discharge test.

[0043] Preferably, the determination of transmission priority specifically includes the following steps:

[0044] E1: Determine whether any one or more of the temperature test results, the strain test results, the vibration test results and the partial discharge test results are uploaded. If yes, any one or more of the temperature test results, the strain test results, the vibration test results and the partial discharge test results are preferentially transmitted, and the transmission order is: the partial discharge test result precedes the vibration test result, the vibration test result precedes the strain test result, and the strain test result precedes the temperature test result. Otherwise, execute step E2;

[0045] E2: The parameters of the partial discharge module are transmitted prior to the parameters of the vibration module, the parameters of the vibration module are transmitted prior to the parameters of the strain module, and the parameters of the strain module are transmitted prior to the parameters of the temperature module.

[0046] Beneficial effects: The fiber optic sensing-based cable parameter testing device of the present application realizes the collection of temperature parameters and temperature testing through the temperature module, the collection of strain parameters and strain testing through the strain module, the collection of vibration parameters and vibration testing through the vibration module, the collection of local discharge parameters and local discharge testing through the local discharge module, and the optimization of the transmission order of parameters through the transmission module, thereby realizing a comprehensive test of the cable parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 This is a structural block diagram of a cable parameter testing device based on optical fiber sensing provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0050] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0051] This embodiment discloses Figure 1 A cable parameter testing device based on optical fiber sensing is shown, comprising:

[0052] The temperature module is configured to: collect temperature parameters of the cable, perform temperature test on the cable based on the temperature parameters, and upload the temperature test result;

[0053] The strain module is configured to: collect the strain parameters of the cable, perform strain testing on the cable based on the strain parameters, and upload the strain test results;

[0054] A vibration module, the vibration module is configured to: collect vibration parameters of the cable, perform a vibration test on the cable based on the vibration parameters, and upload the vibration test results;

[0055] A partial discharge module, wherein the partial discharge module is configured to: collect partial discharge parameters of the cable, perform a partial discharge test on the cable based on the partial discharge parameters, and upload the partial discharge test results;

[0056] The transmission module is configured to obtain temperature test results, strain test results, vibration test results and partial discharge test results, and determine the transmission priority, and the transmission priority is used to determine the transmission order of temperature parameters, strain parameters, vibration parameters and partial discharge parameters.

[0057] The temperature module is used to collect temperature parameters and perform temperature tests; the strain module is used to collect strain parameters and perform strain tests; the vibration module is used to collect vibration parameters and perform vibration tests; the partial discharge module is used to collect partial discharge parameters and perform partial discharge tests; and the transmission module is used to optimize the transmission sequence of parameters.

[0058] Specifically, the temperature parameters of the cable are collected, including:

[0059] The cables are temperature zoned based on the temperature data of the environment in which the cables are located, and the cables whose relative temperature difference in the environment is less than or equal to Temp0 are divided into the same temperature zone, wherein Temp0 is a preset temperature zone threshold. It should be noted that different temperature data will have different impacts on the temperature parameters. Therefore, this embodiment performs temperature zone on the cables based on the temperature data of the environment in which the cables are located in order to optimize the preprocessing of the temperature parameters.

[0060] Specifically, the temperature test of the cable is performed based on the temperature parameter, and the temperature test result is uploaded, which specifically includes the following steps:

[0061] A1: Obtain several cables in the same temperature zone, and obtain the average temperature parameters of each cable based on optical fiber sensing, and express it as Temp i_j , where i is the cable number and j is the temperature zone number;

[0062] A2: Calculate the average temperature parameters of several cables in the same temperature zone in step A1, and the calculation formula for the average temperature parameters of several cables in the same temperature zone is Among them, N EC The number of cables in the same temperature zone. is the sum of the average temperature parameters of several cables in the same temperature zone. is the average temperature parameter of several cables in the temperature zone numbered j;

[0063] A3: Satisfaction The cable numbered i_j is captured, and the cable is segmented by temperature based on optical fiber sensing. The cable segments with a relative temperature difference less than or equal to Temp1 are divided into the same temperature segment and expressed as Temp. α_i_j , where α is the temperature segment number on the cable, and Temp1 is the preset temperature segment threshold;

[0064] A4: Calculate and judge | Temp α_i_j -Temp (α-1)_i_j |≥Temp2 is true, if so, set Temp α_i_j and Temp (α-1)_i_j Defined as temperature test result and upload, otherwise repeat steps A1-A4, wherein Temp2 is the preset temperature test threshold. It should be noted that this embodiment divides the cable into temperature segments based on temperature zoning, which is different from the traditional method of dividing the cable based on fixed length. The division method based on temperature segmentation threshold is conducive to temperature comparison between different segments on the same cable, making it more accurate to capture the cable segment with excessive temperature rise, which is conducive to cable parameter testing and improves the processing effect of temperature parameters.

[0065] Specifically, the strain parameters of the cable are collected, including:

[0066] The cables are strain zoned based on the types of cables and the corresponding environments in which they are located. Cables of the same type and whose environmental similarity is greater than or equal to Envi0 are divided into the same strain zone, wherein Envi0 is a preset strain zone threshold. It should be noted that the calculation of environmental similarity in this embodiment may be any of the existing technologies for analyzing environmental data, which aims to obtain similar environmental data; further, the cable type has an important influence on its strain parameters. Therefore, in this embodiment, the cables are divided based on the cable type in order to optimize the preprocessing of strain data.

[0067] Specifically, performing a strain test on the cable based on the strain parameter and uploading the strain test result specifically includes the following steps:

[0068] B1: Obtain several cables in the same strain zone, obtain the strain parameters of each cable based on optical fiber sensing, and express them as Stra i_m , where i is the cable number and m is the strain zone number;

[0069] B2: Calculate the average strain parameters of several cables in the same strain partition in step B1, and the calculation formula for the average strain parameters of several cables in the same strain partition is Among them, N EC is the number of cables in the same strain zone, is the sum of the average strain parameters of several cables in the same strain zone, is the average strain parameter of several cables in the strain partition numbered m;

[0070] B3: Satisfaction The cable numbered i_m is captured, and the cable is strain segmented based on optical fiber sensing. The cable segments with relative strain differences less than or equal to Stra0 are divided into the same strain segment and expressed as Stra β_i_m , where β is the strain segment number on the cable, and Stra0 is the preset strain segment threshold;

[0071] B4: Calculate and judge | Stra β_i_m -Stra (β-1)_i_m |≥Stra1 is true, if so, set Stra β_i_m and Stra (β-1)_i_m Define it as strain test result and upload it, otherwise repeat steps B1-B4, where Stra1 is the preset strain test threshold. It should be noted that this embodiment is different from the traditional segmentation of the cable according to a fixed distance. The segmentation based on the strain segmentation threshold makes the location of the strain anomaly more accurate, which is beneficial to the cable parameter test and provides a processing effect on the strain parameters.

[0072] Specifically, the vibration parameters of the cable are collected, including:

[0073] The cables are strain zoned based on the type of cable and the corresponding environment. Cables of the same type and whose environment similarity is greater than or equal to Envi1 are divided into the same vibration zone, where Envi0 is the preset vibration zone threshold. It should be noted that the division of vibration zones and strain zones follows the same division rule, which will not be elaborated here.

[0074] The vibration parameters include vibration amplitude and vibration frequency. It should be noted that the vibration parameters in this embodiment are calculated using existing matrix operation rules, and the corresponding threshold settings are also corresponding matrices, and the threshold comparison method is to compare the values ​​on the corresponding rows and columns.

[0075] Specifically, a vibration test is performed on the cable based on the vibration parameters, and the vibration test results are uploaded, which specifically includes the following steps:

[0076] C1: Obtain several cables in the same vibration zone, obtain the vibration parameters of each cable based on optical fiber sensing, and express them as Vibr i_n , where i is the cable number and n is the vibration zone number;

[0077] C2: Calculate the average vibration parameters of several cables in the same vibration zone in step C1, and the calculation formula for the average vibration parameters of several cables in the same vibration zone is Among them, N EC The number of cables in the same vibration zone, is the sum of the average vibration parameters of several cables in the same vibration zone, is the average vibration parameter of several cables in the vibration zone numbered n;

[0078] C3: Satisfaction The cable numbered i_n is captured, and the cable is segmented based on optical fiber sensing. The cable segments with relative vibration difference less than or equal to Vibr0 are divided into the same vibration segment and expressed as Vibr χ_i_n , where χ is the vibration segment number on the cable, and Vibr0 is the preset vibration segment threshold;

[0079] C4: Calculate and judge | Vibr χ_i_n -Vibr (χ-1)_i_n |≥Vibr1 is true, if so, Vibr χ_i_n and Vibr (χ-1)_i_n Defined as vibration test result and upload, otherwise repeat steps C1-C4, wherein Vibr1 is the preset vibration test threshold. It should be noted that in this embodiment, the cable is segmented based on the vibration segmentation threshold, which effectively improves the positioning of abnormal vibration positions and the processing effect of vibration parameters.

[0080] Specifically, the partial discharge parameters of the cable are collected, including:

[0081] Based on optical fiber sensing, partial discharge test is performed in the whole cable area. It should be noted that the partial discharge parameter represents the insulation aging degree of the cable, and its existence has a decisive influence on the operation of the cable. Therefore, in this embodiment, partial discharge test is performed in the whole cable area to effectively improve the test of partial discharge phenomenon;

[0082] The local discharge parameters include the discharge amount and the discharge repetition rate. It should be noted that the local discharge parameters in this embodiment are calculated according to the existing matrix operation rules, and the corresponding threshold settings are also corresponding matrices, and the threshold comparison method is to compare the values ​​on the corresponding rows and columns.

[0083] Specifically, performing a partial discharge test on the cable based on the partial discharge parameters and uploading the partial discharge test results specifically includes the following steps:

[0084] D1: Obtain the partial discharge parameters of the entire cable based on optical fiber sensing and express them as PD δ_i_q , where δ is the number of iterations of the partial discharge test, i is the cable number, and q is the number of the partial discharge area on the cable numbered i;

[0085] D2: Get the function of the local discharge parameters with respect to the number of iterations of the local discharge test and express it as PD δ_i_q =f(δ), where f represents a function of the number of iterations of the partial discharge parameter with respect to the partial discharge test. It should be noted that, in the present embodiment, the function for obtaining the number of iterations of the partial discharge parameter with respect to the partial discharge test is a fitting function, and its derivative represents the variation trend of the partial discharge parameter.

[0086] D3: Calculate and determine whether f'(δ)>0 is true in the interval [δ-ε,δ], that is, determine whether the change trend of the partial discharge parameter is rising. If so, the interval [δ-ε,δ] and the corresponding [PD (δ-ε)_i_q ,PD δ_i_q ] is defined as the partial discharge test result and uploaded, otherwise steps D1-D3 are repeated, where ε is a control parameter of the preset number of iterations of the partial discharge test and δ is a positive integer multiple of (δ-ε), and f'(δ) is the derivative of the function of the partial discharge parameter with respect to the number of iterations of the partial discharge test.

[0087] Specifically, determining the transmission priority includes the following steps:

[0088] E1: Determine whether there is any one or more of the uploaded temperature test results, strain test results, vibration test results and partial discharge test results. If yes, any one or more of the existing temperature test results, strain test results, vibration test results and partial discharge test results are preferentially transmitted, and the transmission order is: partial discharge test results precede vibration test results, vibration test results precede strain test results, and strain test results precede temperature test results. Otherwise, execute step E2;

[0089] E2: The parameters of the partial discharge module are transmitted before the parameters of the vibration module, the parameters of the vibration module are transmitted before the parameters of the strain module, and the parameters of the strain module are transmitted before the parameters of the temperature module.

[0090] In summary, the cable parameter testing device based on optical fiber sensing in this embodiment realizes the collection of temperature parameters and temperature testing through the temperature module, the collection of strain parameters and strain testing through the strain module, the collection of vibration parameters and vibration testing through the vibration module, the collection of local discharge parameters and local discharge testing through the local discharge module, and the optimization of parameter transmission order through the transmission module, thereby realizing comprehensive testing of cable parameters.

[0091] In the embodiments provided in the present application, it should be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code or any appropriate combination thereof. For hardware implementation, the processor can be implemented in one or more of the following units: application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other electronic units designed to implement the functions described herein or their combination. For software implementation, part or all of the flow of the embodiment can be completed by instructing the relevant hardware through a computer program. When implemented, the above program can be stored in a computer-readable storage medium or transmitted as one or more instructions or codes on a computer-readable storage medium. Computer-readable storage media include computer storage media and communication media, wherein the communication medium includes any medium that is convenient for transmitting a computer program from one place to another. The storage medium can be any available medium that a computer can access. The computer-readable storage medium can include but is not limited to RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer.

[0092] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cable parameter testing device based on optical fiber sensing, characterized in that: include: A temperature module, wherein the temperature module is configured to: collect temperature parameters of the cable, perform a temperature test on the cable based on the temperature parameters, and upload the temperature test result; A strain module, wherein the strain module is configured to: collect strain parameters of the cable, perform strain testing on the cable based on the strain parameters, and upload the strain testing results; A vibration module, wherein the vibration module is configured to: collect vibration parameters of the cable, perform a vibration test on the cable based on the vibration parameters, and upload the vibration test result; A partial discharge module, wherein the partial discharge module is configured to: collect partial discharge parameters of the cable, perform a partial discharge test on the cable based on the partial discharge parameters, and upload the partial discharge test result; A transmission module, wherein the transmission module is configured to: obtain the temperature test result, the strain test result, the vibration test result and the partial discharge test result, and determine a transmission priority, wherein the transmission priority is used to determine a transmission order of the temperature parameter, the strain parameter, the vibration parameter and the partial discharge parameter.

2. The cable parameter testing device based on optical fiber sensing according to claim 1 is characterized in that: The temperature parameters of the acquisition cable specifically include: The cables are temperature zoned based on the temperature data of the environment in which the cables are located. Cables whose relative temperature difference of the environment in which the cables are located is less than or equal to Temp0 are divided into the same temperature zone, where Temp0 is a preset temperature zone threshold.

3. The cable parameter testing device based on optical fiber sensing according to claim 2 is characterized in that: The method of performing a temperature test on the cable based on the temperature parameter and uploading the temperature test result specifically includes the following steps: A1: Obtain several cables in the same temperature zone, and obtain the average temperature parameters of each cable based on optical fiber sensing, and express it as Temp i_j , where i is the cable number and j is the temperature zone number; A2: Calculate the average temperature parameters of several cables in the same temperature zone in step A1, and the calculation formula for the average temperature parameters of several cables in the same temperature zone is: Among them, N EC The number of cables in the same temperature zone. is the sum of the average temperature parameters of several cables in the same temperature zone. is the average temperature parameter of several cables in the temperature zone numbered j; A3: Satisfaction The cable numbered i_j is captured, and the cable is segmented by temperature based on optical fiber sensing. The cable segments with a relative temperature difference less than or equal to Temp1 are divided into the same temperature segment and expressed as Temp. α_i_j , where α is the temperature segment number on the cable, and Temp1 is the preset temperature segment threshold; A4: Calculate and judge | Temp α_i_j -Temp (α-1)_i_j |≥Temp2 is true, if so, set Temp α_i_j and Temp (α-1)_i_j Define as the temperature test result and upload, otherwise repeat steps A1-A4, where Temp2 is the preset temperature test threshold.

4. The cable parameter testing device based on optical fiber sensing according to claim 1, characterized in that: The strain parameters of the acquisition cable specifically include: The cables are strain zoned based on their types and the corresponding environments. Cables of the same type and whose environmental similarity is greater than or equal to Envi0 are divided into the same strain zone, where Envi0 is a preset strain zone threshold.

5. The cable parameter testing device based on optical fiber sensing according to claim 4 is characterized in that: The method of performing a strain test on the cable based on the strain parameter and uploading the strain test result specifically includes the following steps: B1: Obtain several cables in the same strain zone, obtain the strain parameters of each cable based on optical fiber sensing, and express them as Stra i_m , where i is the cable number and m is the strain zone number; B2: Calculate the average strain parameters of several cables in the same strain partition in step B1, and the calculation formula for the average strain parameters of several cables in the same strain partition is: Among them, N EC is the number of cables in the same strain zone, is the sum of the average strain parameters of several cables in the same strain zone, is the average strain parameter of several cables in the strain partition numbered m; B3: Satisfaction The cable numbered i_m is captured, and the cable is strain segmented based on optical fiber sensing. The cable segments with relative strain differences less than or equal to Stra0 are divided into the same strain segment and expressed as Stra β_i_m , where β is the strain segment number on the cable, and Stra0 is the preset strain segment threshold; B4: Calculate and judge | Stra β_i_m -Stra (β-1)_i_m |≥Stra1 is true, if so, set Stra β_i_m and Stra (β-1)_i_m Defined as the strain test result and uploaded, otherwise repeat steps B1-B4, where Stra1 is the preset strain test threshold.

6. The cable parameter testing device based on optical fiber sensing according to claim 1, characterized in that: The vibration parameters of the acquisition cable specifically include: The cables are strain zoned based on their types and the corresponding environments. Cables of the same type and whose environment similarity is greater than or equal to Envi1 are divided into the same vibration zone, where Envi0 is the preset vibration zone threshold. The vibration parameters include vibration amplitude and vibration frequency.

7. The cable parameter testing device based on optical fiber sensing according to claim 6, characterized in that: The vibration test of the cable based on the vibration parameters and uploading the vibration test results specifically includes the following steps: C1: Obtain several cables in the same vibration zone, obtain the vibration parameters of each cable based on optical fiber sensing, and express them as Vibr i_n , where i is the cable number and n is the vibration zone number; C2: Calculate the average vibration parameters of several cables in the same vibration zone in step C1, and the calculation formula for the average vibration parameters of several cables in the same vibration zone is: Among them, N EC The number of cables in the same vibration zone, is the sum of the average vibration parameters of several cables in the same vibration zone, is the average vibration parameter of several cables in the vibration zone numbered n; C3: Satisfaction The cable numbered i_n is captured, and the cable is segmented based on optical fiber sensing. The cable segments with relative vibration difference less than or equal to Vibr0 are divided into the same vibration segment and expressed as Vibr χ_i_n , where χ is the vibration segment number on the cable, and Vibr0 is the preset vibration segment threshold; C4: Calculate and judge | Vibr χ_i_n -Vibr (χ-1)_i_n |≥Vibr1 is true, if so, Vibr χ_i_n and Vibr (χ-1)_i_n Define as the vibration test result and upload, otherwise repeat steps C1-C4, where Vibr1 is the preset vibration test threshold.

8. The cable parameter testing device based on optical fiber sensing according to claim 1, characterized in that: The partial discharge parameters of the acquisition cable specifically include: Conduct partial discharge testing over the entire cable area based on fiber optic sensing; The local discharge parameters include discharge amount and discharge repetition rate.

9. The cable parameter testing device based on optical fiber sensing according to claim 8, characterized in that: The method of performing a partial discharge test on the cable based on the partial discharge parameters and uploading the partial discharge test results specifically includes the following steps: D1: Obtain the partial discharge parameters of the entire cable based on optical fiber sensing and express them as PD δ_i_q , where δ is the number of iterations of the partial discharge test, i is the cable number, and q is the number of the partial discharge area on the cable numbered i; D2: Obtain the function of the partial discharge parameter with respect to the number of iterations of the partial discharge test, and express it as PD δ_i_q =f(δ), wherein f represents a function of the partial discharge parameter with respect to the number of iterations of the partial discharge test; D3: Calculate and determine whether f'(δ)>0 is true in the interval [δ-ε,δ]. If so, convert the interval [δ-ε,δ] and the corresponding [PD (δ-ε)_i_q ,PD δ_i_q ] is defined as the partial discharge test result and uploaded, otherwise steps D1-D3 are repeated, wherein ε is a control parameter of the preset number of iterations of the partial discharge test, and f'(δ) is the derivative of the function of the partial discharge parameter with respect to the number of iterations of the partial discharge test.

10. The cable parameter testing device based on optical fiber sensing according to any one of claims 3, 5, 7 or 9, characterized in that: The determination of transmission priority specifically includes the following steps: E1: Determine whether any one or more of the temperature test results, the strain test results, the vibration test results and the partial discharge test results are uploaded. If yes, any one or more of the temperature test results, the strain test results, the vibration test results and the partial discharge test results are preferentially transmitted, and the transmission order is: the partial discharge test result precedes the vibration test result, the vibration test result precedes the strain test result, and the strain test result precedes the temperature test result. Otherwise, execute step E2; E2: The parameters of the partial discharge module are transmitted prior to the parameters of the vibration module, the parameters of the vibration module are transmitted prior to the parameters of the strain module, and the parameters of the strain module are transmitted prior to the parameters of the temperature module.

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