A method for measuring 10kV cable field environmental data using a single-soldier workstation

Abstract

The present invention relates to the technical field of cable environment measurement, and discloses a 10kV cable field environment data measurement method of a single-soldier workstation. The present invention first compares a first environmental risk coefficient of a cable field environment with a preset first risk coefficient threshold of the cable field environment to avoid the influence of temperature and humidity in the environment on cable signal transmission, then compares a second environmental risk coefficient of the cable field environment with a preset second risk coefficient threshold of the cable field environment to avoid the influence of battery strength and air pH in the environment on cable signal transmission, and finally, performs an overall risk assessment on the cable field environment according to the first environmental risk coefficient and the second environmental risk coefficient to ensure that the influence of the cable field environment on cable signal transmission is minimized.

Description

Technical Field

[0001] The invention relates to the technical field of cable environment measurement, and in particular to a method for measuring on-site environmental data of a 10kV cable by a single-soldier workstation. Background Art

[0002] An individual workstation usually refers to a portable system that integrates multiple functions. The individual workstation integrates multiple functions to meet the various needs of individual soldiers when performing tasks. Among them, data transmission and processing capabilities are crucial, which enables the command center to understand the on-site situation in real time and make corresponding command decisions. Therefore, the site selection of the individual workstation must first consider the impact of the surrounding environment on the signal transmission of the 10kV cable.

[0003] The existing methods for measuring the on-site environmental data of 10kV cables at individual workstations mostly measure whether there are obstacles and explosives in the on-site environment, whether the on-site environment is stable, and other environmental data that affect cable laying. Whether the on-site environment will affect the signal transmission of the cable is not considered. Therefore, the present application provides a method for measuring the on-site environmental data of 10kV cables at individual workstations. Summary of the invention

[0004] The purpose of the present invention is to provide a 10kV cable field environment data measurement method for a single-soldier workstation to solve the above technical problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for measuring 10kV cable field environmental data by a single-soldier workstation, the method comprising the following steps:

[0007] Step S1, measuring basic data of the cable field environment in real time, and entering the basic data into a database, wherein the basic data includes ambient temperature and ambient humidity;

[0008] Step S2, measuring the special data of the cable field environment in real time, and entering the special data into a database, wherein the special data includes magnetic field strength and air pH value;

[0009] Step S3, processing the basic data to calculate the first risk coefficient of the cable site environment;

[0010] Step S4, processing the special data and calculating the second risk coefficient of the cable site environment;

[0011] Step S5: judging whether there is a risk in the cable site environment according to the first risk coefficient of the cable site environment and the second risk coefficient of the cable site environment, and issuing a corresponding warning according to the judgment result.

[0012] As a further description of the solution of the present invention, the method for obtaining the first risk coefficient in step S3 includes:

[0013] Step S31, dividing the cable field environment into multiple areas according to the settings, and deploying temperature sensors and humidity sensors in each area to measure basic data in real time;

[0014] Step S32, number all the areas, the numbers are: 1, 2, ..., n;

[0015] Step S33: Obtain the temperature data of the ith region over time curve T i (t) and humidity data change curve H over time i (t), i belongs to n, and n>i>1;

[0016] Step S34: Obtain the temperature change value and humidity change value of the ith region in turn according to the curve obtained in step S33, and calculate the first environmental risk coefficient σ of the ith region i ;

[0017] Step S35: The first environmental risk coefficient σ of the i-th region i Compared with the set threshold σ0, if σ i If it is greater than or equal to σ0, the i-th region will be marked;

[0018] Step S36: Repeat steps S33-S35 to calculate the first environmental risk coefficients of n areas in sequence.

[0019] Step S37, comparing the first environmental risk coefficient of each area with the set threshold σ0 in turn, until all areas with the first environmental risk coefficient greater than or equal to the set threshold σ0 are marked;

[0020] Step S38, obtaining the volume, ambient temperature and ambient humidity of each marked area;

[0021] Step S39, calculating a first risk coefficient of the cable site environment according to the data acquired in step S38.

[0022] As a further description of the solution of the present invention, the first environmental risk coefficient σ of the i-th area is calculated in step S33. i The specific process includes:

[0023] The first environmental risk coefficient σ of the i-th region is calculated by the following formula: i :

[0024]

[0025] In the formula, α and β are weight coefficients, T i0(t) is the standard curve of temperature data changing with time based on standard data, H i0 (t) is the standard curve of humidity data changing with time obtained based on standard data, t1 is the initial time of measurement, and t2 is the end time of measurement.

[0026] As a further description of the scheme of the present invention, all areas marked in step S37 where the first environmental risk coefficient is greater than or equal to the set threshold σ0 are obtained, and the marked areas are renumbered in sequence: 1, 2, ..., m, where m is less than or equal to n.

[0027] As a further description of the solution of the present invention, the specific process of calculating the first risk coefficient of the cable field environment in step S39 includes:

[0028] The first environmental risk factor σ of the cable site environment is calculated by the following formula s :

[0029]

[0030] Where j belongs to m, and n>m>j>1, V j is the volume of the jth region, V y is the total volume of the cable field environment, V x is the total volume of all regions marked in step S37 where the first environmental risk coefficient is greater than or equal to the set threshold σ0, σ j is the first environmental risk coefficient of the jth region.

[0031] As a further description of the solution of the present invention, the method of calculating the second risk coefficient of the cable field environment in step S4 includes:

[0032] Step S41, measuring the magnetic field and air pH value of the cable field environment at regular intervals;

[0033] Step S42, numbering all the measurement times, the numbers are: 1, 2, ..., k;

[0034] Step S43, construct a rectangular coordinate system xoy, where the x-axis is the number of measurements;

[0035] Step S44, fitting the curve D(k) of magnetic field intensity changing with time and the curve P(k) of air pH value changing with time in the rectangular coordinate system xoy;

[0036] Step S45: Obtain the area S enclosed by the curve D(k) of magnetic field intensity changing with time and the x-axis D The area S enclosed by the air pH value changing with time curve P(k) and the x-axis P ;

[0037] Step S46: Calculate a second risk coefficient ρ of the cable site environment according to the area data obtained in step S45.

[0038] As a further description of the solution of the present invention, the specific process of calculating the second risk coefficient of the cable field environment in step S46 includes:

[0039] The second risk factor ρ of the cable site environment is calculated by the following formula s :

[0040]

[0041] In the formula, μ and π are weight coefficients, θ is the conversion coefficient, S D0 S is the area enclosed by the standard curve of magnetic field intensity versus time preset by the system and the x-axis, P0 It is the area enclosed by the standard curve of air pH value changing with time preset by the system and the x-axis.

[0042] As a further description of the solution of the present invention, the specific working process of step S5 includes:

[0043] Step S51: The first environmental risk coefficient σ of the cable site environment s The first risk factor threshold σ of the preset cable site environment th For comparison, if σ s ≥σ th , it is judged that there is a first type of fault risk in the cable field environment, and a first type of fault risk warning is immediately issued, otherwise, no warning is issued;

[0044] Step S52: The second environmental risk coefficient ρ of the cable site environment s The second risk factor threshold ρ of the preset cable site environment th For comparison, if ρ s ≥ρ th , it is judged that there is a second type of fault risk in the cable field environment, and a second type of fault risk warning is immediately issued, otherwise, no warning is issued;

[0045] Step S53: According to the first environmental risk coefficient σ s and the second environmental risk coefficient ρ s Conduct an overall risk assessment of the cable site environment.

[0046] As a further description of the solution of the present invention, the process of performing an overall risk assessment on the cable field environment in step S53 includes:

[0047] The overall environmental risk factor of the cable site environment is calculated by the following formula:

[0048]

[0049] In the formula, γ and δ are weight coefficients;

[0050] The overall environmental risk factor of the cable site environment The overall risk factor threshold of the preset cable site environment For comparison, if It is judged that there is an overall type failure risk in the cable field environment, and an overall type failure risk warning is immediately issued; otherwise, no warning is issued.

[0051] Beneficial effects of the present invention:

[0052] 1. The present invention divides the cable field environment into multiple areas according to the settings, and numbers all the areas, obtains the temperature data change curve over time and the humidity data change curve over time of each area, calculates the first environmental risk coefficient of each area according to the obtained data, compares the first environmental risk coefficient of each area with the set threshold in turn, and marks it if it is greater than the set threshold until all areas are marked, obtains the volume, ambient temperature and ambient humidity of each marked area, calculates the first risk coefficient of the cable field environment, and compares the first environmental risk coefficient of the cable field environment with the preset first risk coefficient threshold of the cable field environment to prevent the temperature and humidity in the environment from affecting the cable signal transmission;

[0053] 2. The present invention measures the magnetic field and air pH value of the cable on-site environment at regular intervals, numbers all the measurement times, and then fits the magnetic field intensity versus time curve and the air pH value versus time curve in a rectangular coordinate system, obtains the area enclosed by the magnetic field intensity versus time curve and the x-axis, and the area enclosed by the air pH value versus time curve and the x-axis, calculates the second risk coefficient of the cable on-site environment, compares the second environmental risk coefficient of the cable on-site environment with a preset second risk coefficient threshold of the cable on-site environment, and avoids the battery strength and air pH in the environment affecting the cable signal transmission.

[0054] 3. The present invention performs an overall risk assessment on the cable site environment according to the first environmental risk coefficient and the second environmental risk coefficient to ensure that the impact of the cable site environment on cable signal transmission is minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The present invention will be further described below in conjunction with the accompanying drawings.

[0056] Figure 1 It is a partial flow chart of the 10kV cable field environment data measurement method of the individual workstation provided by the present invention. DETAILED DESCRIPTION

[0057] 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.

[0058] See also Figure 1 The present invention is a method for measuring 10kV cable field environment data by a single-soldier workstation, the method comprising the following steps:

[0059] Step S1, measuring basic data of the cable field environment in real time, and entering the basic data into a database, wherein the basic data includes ambient temperature and ambient humidity;

[0060] Step S2, measuring the special data of the cable field environment in real time, and entering the special data into a database, wherein the special data includes magnetic field strength and air pH value;

[0061] Step S3, processing the basic data to calculate the first risk coefficient of the cable site environment;

[0062] Step S4, processing the special data and calculating the second risk coefficient of the cable site environment;

[0063] Step S5: judging whether there is a risk in the cable site environment according to the first risk coefficient of the cable site environment and the second risk coefficient of the cable site environment, and issuing a corresponding warning according to the judgment result.

[0064] Through the above technical scheme, the present invention measures the basic data and special data domains of the on-site environment respectively. The basic data include: ambient temperature and ambient humidity, and the special data include: magnetic field strength and air pH value. Among them, the temperature of the cable operating environment has an important influence on its performance. Too high temperature may reduce its insulation performance, while too low temperature may cause the cable to become brittle and reduce its mechanical properties. Humidity also affects the insulation performance and mechanical strength of the cable. Too high humidity may cause the cable insulation layer to absorb water, thereby reducing its insulation performance; too low humidity may cause the cable material to become brittle and reduce its mechanical strength. The decline in the insulation performance and mechanical properties of the cable will affect the signal transmission of the cable. Therefore, it is very important to control the temperature and humidity of the cable environment. At the same time, a strong electromagnetic field may interfere with the signal transmission of the cable, resulting in a decrease in communication quality. The pH value of the ambient air will also affect the signal transmission of the cable.

[0065] Then, the present invention calculates a first risk coefficient of the cable site environment and a second risk coefficient of the cable site environment according to the basic data and the special data respectively, determines whether there is a risk in the cable site environment according to the first risk coefficient of the cable site environment and the second risk coefficient of the cable site environment, and issues a corresponding warning based on the judgment result.

[0066] The method for obtaining the first risk coefficient in step S3 includes:

[0067] Step S31, dividing the cable field environment into multiple areas according to the settings, and deploying temperature sensors and humidity sensors in each area to measure basic data in real time;

[0068] Step S32, number all the areas, the numbers are: 1, 2, ..., n;

[0069] Step S33: Obtain the temperature data of the ith region over time curve T i (x) and humidity data change curve H over time i (t), i belongs to n, and n>i>1;

[0070] Step S34: Obtain the temperature change value and humidity change value of the ith region in turn according to the curve obtained in step S33, and calculate the first environmental risk coefficient σ of the ith region i ;

[0071] Step S35: The first environmental risk coefficient σ of the i-th region i Compared with the set threshold σ0, if σ i If it is greater than or equal to σ0, the i-th region will be marked;

[0072] Step S36: Repeat steps S33-S35 to calculate the first environmental risk coefficients of n areas in sequence.

[0073] Step S37, comparing the first environmental risk coefficient of each area with the set threshold σ0 in turn, until all areas with the first environmental risk coefficient greater than or equal to the set threshold σ0 are marked;

[0074] Step S38, obtaining the volume, ambient temperature and ambient humidity of each marked area;

[0075] Step S39, calculating a first risk coefficient of the cable site environment according to the data acquired in step S38.

[0076] In step S33, the first environmental risk coefficient σ of the i-th region is calculated. i The specific process includes:

[0077] The first environmental risk coefficient σ of the i-th region is calculated by the following formula: i :

[0078]

[0079] In the formula, α and β are weight coefficients, T i0 (t) is the standard curve of temperature data changing with time based on standard data, H i0 (t) is the standard curve of humidity data changing with time obtained based on standard data, t1 is the initial time of measurement, and t2 is the end time of measurement.

[0080] Obtain all areas marked in step S37 where the first environmental risk coefficient is greater than or equal to the set threshold σ0, and renumber the marked areas in the following order: 1, 2, ..., m, where m is less than or equal to n.

[0081] The specific process of calculating the first risk coefficient of the cable field environment in step S39 includes:

[0082] The first environmental risk factor σ of the cable site environment is calculated by the following formula s :

[0083]

[0084] Where j belongs to m, and n>m>j>1, V j is the volume of the jth region, V y is the total volume of the cable field environment, V x is the total volume of all regions marked in step S37 where the first environmental risk coefficient is greater than or equal to the set threshold σ0, σ j is the first environmental risk coefficient of the jth region.

[0085] Through the above technical scheme, in this embodiment, the cable site environment is divided into multiple areas according to the settings, and all areas are numbered, and the temperature data change curve over time and the humidity data change curve over time of each area are obtained. The first environmental risk coefficient of each area is calculated based on the acquired data, and the first environmental risk coefficient of each area is compared with the set threshold in turn. If it is greater than the set threshold, it is marked until all areas are marked, and the volume, ambient temperature and ambient humidity of each marked area are obtained, and the first risk coefficient of the cable site environment is calculated.

[0086] The method of calculating the second risk coefficient of the cable field environment in step S4 includes:

[0087] Step S41, measuring the magnetic field and air pH value of the cable field environment at regular intervals;

[0088] Step S42, numbering all the measurement times, the numbers are: 1, 2, ..., k;

[0089] Step S43, construct a rectangular coordinate system xoy, where the x-axis is the number of measurements;

[0090] Step S44, fitting the curve D(k) of magnetic field intensity changing with time and the curve P(k) of air pH value changing with time in the rectangular coordinate system xoy;

[0091] Step S45: Obtain the area S enclosed by the curve D(k) of magnetic field intensity changing with time and the x-axis D The area S enclosed by the air pH value changing with time curve P(k) and the x-axis P ;

[0092] Step S46: Calculate a second risk coefficient ρ of the cable site environment according to the area data obtained in step S45.

[0093] The specific process of calculating the second risk coefficient of the cable field environment in step S46 includes:

[0094] The second risk factor ρ of the cable site environment is calculated by the following formula s :

[0095]

[0096] In the formula, μ and π are weight coefficients, θ is the conversion coefficient, S D0 S is the area enclosed by the standard curve of magnetic field intensity versus time preset by the system and the x-axis, P0 It is the area enclosed by the standard curve of air pH value changing with time preset by the system and the x-axis.

[0097] Through the above technical solution, this embodiment measures the magnetic field and air pH value of the cable site environment at regular intervals, and numbers all measurement times in sequence: 1, 2, ..., k, and then fits the magnetic field strength versus time curve and the air pH value versus time curve in the rectangular coordinate system, obtains the area enclosed by the magnetic field strength versus time curve and the x-axis, and the area enclosed by the air pH value versus time curve and the x-axis, and calculates the second risk coefficient of the cable site environment.

[0098] The specific working process of step S5 includes:

[0099] Step S51: The first environmental risk coefficient σ of the cable site environment s The first risk factor threshold σ of the preset cable site environment th For comparison, if σ s ≥σ th , it is judged that there is a first type of fault risk in the cable field environment, and a first type of fault risk warning is immediately issued, otherwise, no warning is issued;

[0100] Step S52: The second environmental risk coefficient ρ of the cable site environment s The second risk factor threshold ρ of the preset cable site environment th For comparison, if ρ s ≥ρ th , it is judged that there is a second type of fault risk in the cable field environment, and a second type of fault risk warning is immediately issued, otherwise, no warning is issued;

[0101] Step S53: According to the first environmental risk coefficient σ s and the second environmental risk coefficient ρ s Conduct an overall risk assessment of the cable site environment.

[0102] The process of performing an overall risk assessment on the cable site environment in step S53 includes:

[0103] The overall environmental risk factor of the cable site environment is calculated by the following formula:

[0104]

[0105] In the formula, γ and δ are weight coefficients;

[0106] The overall environmental risk factor of the cable site environment The overall risk factor threshold of the preset cable site environment For comparison, if It is judged that there is an overall type failure risk in the cable field environment, and an overall type failure risk warning is immediately issued; otherwise, no warning is issued.

[0107] Through the above technical solution, in this embodiment, firstly, the first environmental risk coefficient σ of the cable field environment is s The first risk factor threshold σ of the preset cable site environment th For comparison, if σ s ≥σ th , it is judged that the cable site environment has the first type of fault risk, and the first type of fault risk warning is immediately issued. Otherwise, no warning is issued to avoid the impact of temperature and humidity in the environment on cable signal transmission. Then, the second environmental risk coefficient ρ of the cable site environment is calculated. s The second risk factor threshold ρ of the preset cable site environment th For comparison, if ρ s ≥ρ th , then it is judged that the cable site environment has a second type of fault risk, and a second type of fault risk warning is issued immediately. Otherwise, no warning is issued to avoid the battery strength and air pH in the environment affecting the cable signal transmission. Finally, according to the first environmental risk coefficient σ sand the second environmental risk coefficient ρ s Conduct an overall risk assessment of the cable site environment to ensure that the impact of the cable site environment on cable signal transmission is minimized.

[0108] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for measuring 10kV cable field environmental data by a single-soldier workstation, characterized in that: The method comprises the following steps: Step S1, measuring basic data of the cable field environment in real time, and entering the basic data into a database, wherein the basic data includes ambient temperature and ambient humidity; Step S2, measuring the special data of the cable field environment in real time, and entering the special data into a database, wherein the special data includes magnetic field strength and air pH value; Step S3, processing the basic data to calculate the first risk coefficient of the cable site environment; Step S4, processing the special data and calculating the second risk coefficient of the cable site environment; Step S5, according to the cable site environment first risk factor and the cable site environment second risk factor to determine whether there is a risk in the cable site environment, and according to the judgment result issued a corresponding warning; The method for obtaining the first risk coefficient in step S3 includes: Step S31, dividing the cable field environment into multiple areas according to the settings, and deploying temperature sensors and humidity sensors in each area to measure basic data in real time; Step S32, number all the areas, the numbers are: 1, 2, ..., n; Step S33: Obtain the temperature data of the ith region over time The curve of humidity data changing with time , i belongs to n, and n>i>1; Step S34: Obtain the temperature change value and humidity change value of the ith region in turn according to the curve obtained in step S33, and calculate the first environmental risk coefficient of the ith region ; Step S35: The first environmental risk coefficient of the i-th area With setting threshold Compare, if Greater than or equal to , then mark the i-th area; Step S36: Repeat steps S33-S35 to calculate the first environmental risk coefficients of n areas in sequence. Step S37: compare the first environmental risk coefficient of each area with the set threshold in turn. Compare until all first environmental risk factors are greater than or equal to the set threshold area; Step S38, obtaining the volume, ambient temperature and ambient humidity of each marked area; Step S39: Calculate the first risk coefficient of the cable site environment according to the data obtained in step S38.

2. The 10kV cable field environment data measurement method of a single-soldier workstation according to claim 1 is characterized in that: In step S34, the first environmental risk coefficient of the i-th area is calculated. The specific process includes: The first environmental risk coefficient of the i-th region is calculated by the following formula: : ； In the formula, and is the weight coefficient, The standard curve of temperature data changing with time based on standard data, The standard curve of humidity data changing with time based on standard data is: is the initial moment of measurement, is the end time of the measurement.

3. The 10kV cable field environment data measurement method of a single-soldier workstation according to claim 2 is characterized in that: Obtain all the first environmental risk coefficients marked in step S37 that are greater than or equal to the set threshold , and renumber the marked areas, the numbers are: 1, 2, ..., m, where m is less than or equal to n.

4. The 10kV cable field environment data measurement method of a single-soldier workstation according to claim 3 is characterized in that: The specific process of calculating the first risk coefficient of the cable field environment in step S39 includes: The first environmental risk factor of the cable site environment is calculated by the following formula : ； In the formula, j belongs to m, and n>m>j>1, is the volume of the jth region, is the total volume of the cable field environment, For all first environmental risk factors marked in step S37 to be greater than or equal to the set threshold The total volume of the region, is the first environmental risk coefficient of the jth region.

5. The method for measuring 10kV cable field environment data of a single-soldier workstation according to claim 4 is characterized in that: The method of calculating the second risk coefficient of the cable field environment in step S4 includes: Step S41, measuring the magnetic field and air pH value of the cable field environment at regular intervals; Step S42, numbering all the measurement times, the numbers are: 1, 2, ..., k; Step S43, construct a rectangular coordinate system xoy, where the x-axis is the number of measurements; Step S44: Fitting the curve of magnetic field intensity changing with time in the rectangular coordinate system xoy The curve of air pH value changing with time ; Step S45: Obtaining a curve of magnetic field intensity changing with time The area enclosed by the x-axis The curve of air pH value changing with time The area enclosed by the x-axis ; Step S46: Calculate the second risk coefficient of the cable site environment according to the area data obtained in step S45 .

6. The method for measuring 10kV cable field environment data of a single-soldier workstation according to claim 5 is characterized in that: The specific process of calculating the second risk coefficient of the cable field environment in step S46 includes: The second risk factor of the cable site environment is calculated by the following formula : ； In the formula, and is the weight coefficient, is the conversion factor, The area enclosed by the standard curve of magnetic field intensity versus time preset by the system and the x-axis, It is the area enclosed by the standard curve of air pH value changing with time preset by the system and the x-axis.

7. The method for measuring 10kV cable field environment data of a single-soldier workstation according to claim 6 is characterized in that: The specific working process of step S5 includes: Step S51: The first environmental risk coefficient of the cable site environment The first risk factor threshold of the preset cable site environment For comparison, if , it is judged that the cable field environment has a first type of fault risk, and a first type of fault risk warning is immediately issued, otherwise, no warning is issued; Step S52: The second environmental risk coefficient of the cable site environment The second risk factor threshold value of the preset cable site environment For comparison, if , it is judged that there is a second type of fault risk in the cable field environment, and a second type of fault risk warning is immediately issued, otherwise, no warning is issued; Step S53: According to the first environmental risk coefficient and the second environmental risk factor Conduct an overall risk assessment of the cable site environment.

8. The method for measuring 10kV cable field environment data of a single-soldier workstation according to claim 7, characterized in that: The process of performing an overall risk assessment on the cable site environment in step S53 includes: The overall environmental risk factor of the cable site environment is calculated by the following formula: : ； In the formula, and is the weight coefficient; The overall environmental risk factor of the cable site environment The overall risk factor threshold of the preset cable site environment For comparison, if , it is judged that there is an overall type failure risk in the cable field environment, and an overall type failure risk warning is immediately issued; otherwise, no warning is issued.

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