Insulator state wireless remote monitoring method

Abstract

The invention relates to the technical field of high voltage, in particular to an insulator state wireless remote monitoring method, which comprises the following steps of: determining a working range through working parameters; obtaining target data, wherein the target data comprises reference data and characteristic data; according to the target data, carrying out primary screening on single chips, and obtaining a first target single chip; calculating the first target single chip to obtain a region area; performing secondary screening on the first target single chip according to the area of the region to obtain a second target single chip; and performing three times of screening on the second target single chip through the reference power frequency voltage to obtain a target combination. Compared with the prior art, the method has the advantages that obviously degraded pieces are rapidly filtered through the first piece, then the distribution uniformity is evaluated through the second piece, and finally the difficult pieces are finally judged through the third piece, so that the problems that existing insulators are difficult to detect and inaccurate in detection can be effectively solved, the safety of detection personnel is greatly improved, the working time is shortened, and the detection efficiency is improved. The labor cost is saved, and the insulator detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the high voltage technical field, and particularly relates to a method for wirelessly and remotely monitoring the state of insulators. BACKGROUND

[0002] In an overhead transmission line, insulators (strings) are widely used. Since the insulators bear the dual functions of mechanical support and electrical insulation in a high-voltage transmission line, the value of the insulation resistance of the insulators is directly related to the safe and stable operation of the line. Further, since the insulators are exposed to the outdoor environment for a long time, they are easily affected by natural disasters, temperature changes, humidity, material aging and other factors, resulting in defects such as cracks, contamination and self-explosion. These defects can seriously affect the stability and safety of the power system, and even cause short circuits, electric leakage and other accidents, resulting in huge economic losses.

[0003] Once the insulators have zero value or contamination, they must be cleaned or replaced, otherwise flashover tripping accidents will occur. Therefore, it is of great significance to periodically detect the insulators, discover and handle potential defects in a timely manner, to ensure the safe and stable operation of the power system. SUMMARY

[0004] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] In view of the above-mentioned existing problems, the present application is proposed.

[0006] Therefore, the present application provides a method for wirelessly and remotely monitoring the state of insulators, which can solve the problems mentioned in the background art.

[0007] To solve the above technical problems, the present application provides the following technical solutions: In a first aspect, the present application provides a method for wirelessly and remotely monitoring the state of insulators, comprising determining a working range through working parameters; acquiring target data, wherein the target data comprises reference data and characteristic data; performing a preliminary screening of single pieces according to the target data, and obtaining first target single pieces; obtaining a region area by calculating the first target single pieces; performing a secondary screening of the first target single pieces according to the region area, and obtaining second target single pieces; performing a third screening of the second target single pieces by referring to a power frequency voltage, and obtaining a target combination.

[0008] In a preferred embodiment of the wireless remote monitoring method for insulator status described in this invention, the step of determining the working range through working parameters includes: By referencing the allowable deviation parameter ΔU of the reference resistor, the operating range of a single insulator is determined to be I1-I2.

[0009] As a preferred embodiment of the wireless remote monitoring method for insulator status described in this invention, the reference data is a voltage-reference resistance characteristic curve; The voltage-reference resistance relationship curve is formed by connecting the voltage at each point within the range of I1-I2 with its corresponding reference resistance value.

[0010] As a preferred embodiment of the wireless remote monitoring method for insulator status described in this invention, the characteristic data is a voltage-resistance characteristic curve; The voltage-resistance characteristic curve is formed by connecting the voltage and corresponding resistance values ​​at various points within the range of I1-I2 of each insulator.

[0011] As a preferred embodiment of the wireless remote monitoring method for insulator status described in this invention, the step of performing preliminary screening of insulators based on target data and determining the first target single-piece insulator includes: The voltage-resistance characteristic curve of each insulator piece is compared with the voltage-reference resistance curve, and the insulator pieces whose absolute value of deviation within the range of I1-I2 is less than ΔU are selected as the first target pieces.

[0012] As a preferred embodiment of the wireless remote monitoring method for insulator status described in this invention, the step of performing secondary screening of the first target single piece based on the area includes: Each first target chip, whose area Sn is calculated by integrating absolute values, is sorted in ascending order of absolute resistance value. The required number of chips is then selected and compared to obtain the second target chip.

[0013] As a preferred embodiment of the wireless remote monitoring method for insulator status described in this invention, the second target chip is screened three times using a reference power frequency voltage, including: The selected second target chips are sorted in ascending order of absolute resistance value. The problematic chips are then subjected to power frequency voltage testing to determine the target combination.

[0014] Secondly, the present invention provides a wireless remote monitoring method for insulator status, comprising: a target data acquisition module, used to acquire reference voltage data to obtain a voltage-reference resistance relationship curve and input the voltage and corresponding resistance data of each insulator piece within the working range to obtain a voltage-resistance characteristic curve; The screening module is used to compare the voltage-resistance characteristic curve of the insulator piece with the current-reference voltage relationship curve, screen out the pieces with a deviation of less than ΔU, and sort the calculated area Sn of each piece in ascending order to screen out the required number of pieces and obtain the second target piece. The result acquisition module is used to test and verify the obtained second target single chip with reference to the power frequency voltage, filter out the number of unqualified single chips, and form a target combination.

[0015] Thirdly, the present invention provides a computer device including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method described above.

[0016] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: first, a first step is used to quickly filter obviously deteriorated pieces; then, a second step is used to evaluate the uniformity of distribution; and finally, a third step is used to make a final decision on difficult pieces. This can effectively solve the problems of difficulty and inaccuracy in existing insulator testing, greatly improve the safety of testing personnel, reduce working time, save labor costs, and improve the efficiency of insulator testing operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Fig. 1 This is a schematic diagram illustrating the operation steps of a wireless remote monitoring method for insulator status.

[0019] Fig. 2 This is a schematic diagram illustrating the preliminary voltage screening for a wireless remote monitoring method for insulator status.

[0020] Fig. 3 This is a schematic diagram of the internal structure of a computer device. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0024] Example 1

[0025] Reference Figs. 1-3 This is the first embodiment of the present invention, which provides a method for wireless remote monitoring of insulator status, comprising: S1. Determine the working range through working parameters.

[0026] Furthermore, the working range is determined through working parameters, including... The operating range of a single insulator is determined to be I1-I2 by using the allowable deviation parameter ΔU of the reference voltage.

[0027] It should be noted that, based on the basic parameters, the operating range I1-I2 of the insulator should be designed, and within the current range of I1-I2, the operating range of the insulator should include at least three operating points to determine the characteristic curve of the insulator. The more operating points, the greater the computational workload for insulator selection, the smaller the impact of data measurement deviations, and the better the insulator selection effect. The deviation △U is not a fixed value and can be adjusted and changed according to the actual situation.

[0028] S2. Obtain target data, which includes reference data and characteristic data.

[0029] Furthermore, the reference data is the current-reference voltage relationship curve; The current-reference voltage relationship curve is formed by connecting the current at each point within the range of I1-I2 with its corresponding reference voltage value.

[0030] It should be noted that the current and corresponding reference voltage at each point of the insulator are used to establish the current-reference voltage relationship curve a of the insulator with current as the abscissa and voltage as the ordinate.

[0031] Furthermore, the characteristic data are voltage-resistance characteristic curves; The voltage-resistance characteristic curve is a characteristic curve formed by connecting the current and the corresponding voltage value at each point in the range of I1-I2 of each insulator.

[0032] It should be noted that the measured current and corresponding voltage at each point within the I1-I2 current range of each insulator piece form m voltage-resistance characteristic curves for each insulator piece, where m is the total number of insulator pieces available for selection.

[0033] S3. Based on the target data, perform preliminary screening of individual chips to obtain the first target chip.

[0034] Furthermore, based on the target data, preliminary screening of individual chips is performed to determine the first target chip, including: The voltage-resistance characteristic curve of each insulator piece is compared with the current-reference voltage relationship curve, and the insulator pieces whose absolute value of deviation within the range of I1-I2 is less than ΔU are selected as the first target pieces.

[0035] It should be noted that, for the above m current-voltage characteristic curves, the difference between the voltage at each point and the reference voltage in the current-reference voltage relationship curve a is calculated under the same current within the current range of I1-I2. If the difference is greater than the allowable deviation range △U (curve a), it is excluded. Finally, n curves are obtained in which the voltage difference within the working range is all less than the allowable deviation △U, where n is the number of insulator pieces that are initially qualified.

[0036] S4. Based on the area of ​​the region, the first target single piece is screened again to obtain the second target single piece.

[0037] Furthermore, the secondary screening of the first target unit based on the area includes, Each first target chip, whose area Sn is calculated by integrating absolute values, is sorted in ascending order of absolute resistance value. The required number of chips is then selected and compared to obtain the second target chip.

[0038] It should be noted that, for the above n current-voltage characteristic curves, each curve is calculated and subtracted from the current-reference voltage relationship curve a within the current range of I1-I2, corresponding to n1, n2... Nn. The voltage values ​​that are significantly lower than those of the two adjacent "normal" insulators are selected, and the corresponding number of single pieces k is selected. Then k is the second target single piece combination. S5. The second target single chip is screened three times by using the reference power frequency voltage to obtain the target combination.

[0039] Furthermore, the second target chip is screened three times by referencing the power frequency voltage, including: The selected second target chips are sorted in ascending order of absolute resistance value. The problematic chips are then subjected to power frequency voltage testing to determine the target combination.

[0040] It should be noted that N1, N2...Nn are sorted in ascending order, and the required number of individual chips k is selected in turn. Each chip k is then brought into contact with a standardized impulse or power frequency voltage (set by an adjustable spark gap). If a discharge channel cannot be established between the steel cap and the steel foot, it means that the internal circuit is completely conductive (zero value) and has lost its capacitive voltage division capability. The chips corresponding to these k voltage-resistance characteristic curves are the target combination.

[0041] In summary, the beneficial effects of this invention are that it first uses a first step to quickly filter obviously deteriorated insulators, then uses a second step to evaluate the uniformity of distribution, and finally uses a third step to make a final decision on difficult insulators. This effectively solves the problems of difficulty and inaccuracy in existing insulator testing, greatly improves the safety of testing personnel, reduces working time, saves labor costs, and improves the efficiency of insulator testing operations.

[0042] Example 2

[0043] This embodiment provides a wireless remote monitoring method for insulator status, which includes a target data acquisition module for acquiring reference voltage data to obtain a voltage-reference resistance relationship curve and inputting the voltage and corresponding resistance data of each insulator within the working range to obtain a voltage-resistance characteristic curve. The screening module is used to compare the voltage-resistance characteristic curve of the insulator piece with the current-reference voltage relationship curve, screen out the pieces with a deviation of less than ΔU, and sort the calculated area Sn of each piece in ascending order to screen out the required number of pieces and obtain the second target piece. The result acquisition module is used to test and verify the obtained second target single chip with reference to the power frequency voltage, filter out the number of unqualified single chips, and form a target combination.

[0044] The above-mentioned unit modules can be embedded in the processor of the computer device in hardware form or independent of it, or they can be stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of the above modules.

[0045] Example 3

[0046] This embodiment provides a computer device, which can be a terminal. The computer device includes a processor, memory, communication interface, display screen, and input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a method for wireless remote monitoring of insulator status. The display screen can be a liquid crystal display (LCD) or an e-ink display. The input device can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0047] This embodiment also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, enables the acquisition terminal to perform time compensation through a synchronization algorithm.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for wireless remote monitoring of insulator status, characterized in that: include, Determine the working range by using the working parameters; Acquire target data, which includes reference data and characteristic data; Based on the target data, a preliminary screening of individual chips is conducted, and the first target chip is obtained; The area of ​​the region is obtained by calculating the area of ​​the first target unit. The first target unit is further screened based on the area of ​​the region to obtain the second target unit. The target single chip is screened three times by referencing the power frequency voltage to obtain the target combination.

2. The wireless remote monitoring method for insulator status as described in claim 1, characterized in that: The process of determining the working range through working parameters includes, By referencing the allowable deviation parameter ΔU of the reference resistor, the operating range of a single insulator is determined to be I1-I2.

3. The wireless remote monitoring method for insulator status as described in claim 2, characterized in that: The reference data is a voltage-reference resistance characteristic curve; The voltage-reference resistance relationship curve is formed by connecting the voltage at each point within the range of I1-I2 with its corresponding reference resistance value.

4. The wireless remote monitoring method for insulator status as described in claim 3, characterized in that: The characteristic data is a voltage-resistance characteristic curve; The voltage-resistance characteristic curve is formed by connecting the voltage and corresponding resistance values ​​at various points within the range of I1-I2 of each insulator.

5. The wireless remote monitoring method for insulator status as described in any one of claims 1 to 4, characterized in that: The preliminary screening of insulators based on target data, and the determination of the first target single-piece insulator, includes: The voltage-resistance characteristic curve of each insulator piece is compared with the voltage-reference resistance curve, and the insulator pieces whose absolute value of deviation within the range of I1-I2 is less than ΔU are selected as the first target pieces.

6. The wireless remote monitoring method for insulator status as described in claim 5, characterized in that: The secondary screening of the first target piece based on the area includes, Each first target chip, whose area Sn is calculated by integrating absolute values, is sorted in ascending order of absolute resistance value. The required number of chips is then selected and compared to obtain the second target chip.

7. The wireless remote monitoring method for insulator status as described in claim 6, characterized in that: The second target chip is screened three times by referencing the power frequency voltage, including: The selected second target chips are sorted in ascending order of absolute resistance value. The problematic chips are then subjected to power frequency voltage testing to determine the target combination.

8. A method for wireless remote monitoring of insulator status, characterized in that, include: The target data acquisition module is used to acquire reference voltage data to obtain the voltage-reference resistance relationship curve and input the voltage and corresponding resistance data of each insulator piece within the working range to obtain the voltage-resistance characteristic curve. The screening module is used to compare the voltage-resistance characteristic curve of the insulator piece with the current-reference voltage relationship curve, screen out the pieces with a deviation of less than ΔU, and sort the calculated area Sn of each piece in ascending order to screen out the required number of pieces and obtain the second target piece. The result acquisition module is used to test and verify the obtained second target single chip with reference to the power frequency voltage, filter out the number of unqualified single chips, and form a target combination.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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