Intelligent control method and system for oil supplementing device

Abstract

This invention discloses an intelligent control method and system for an oil replenishment device, relating to the field of high-voltage circuit breaker oil replenishment technology. It aims to solve the problems of long working times and low efficiency in current high-voltage circuit breaker oil replenishment operations. The steps include: remotely acquiring the real-time status of the high-voltage circuit breaker and determining the preset oil replenishment amount; connecting the oil replenishment device to the high-voltage circuit breaker; using a vacuum device to remove air from the hydraulic oil of the high-voltage circuit breaker and using a gas detection device to determine whether the air has been completely removed; filtering the oil in the oil replenishment cylinder to remove impurities and using a continuously variable speed control module to control the flow rate of the oil pump; obtaining the total oil replenishment amount within the oil pump time period based on the acquired real-time oil pump replenishment amount and the number of oil pump flow rate adjustments, and determining whether the total oil replenishment amount has reached the preset replenishment amount. This invention enables remote data acquisition and control of the oil replenishment device, ensuring the uniformity and accuracy of control, and greatly improving the working efficiency of high-voltage circuit breaker oil replenishment operations.

Description

Technical Field

[0001] This invention relates to the field of oil replenishment technology for high-voltage circuit breakers, and specifically to an intelligent control method and system for an oil replenishment device. Background Technology

[0002] High-voltage circuit breakers are among the most important pieces of equipment in power systems. Hydraulic circuit breakers, due to their stable performance and high reliability, are widely used in the field. However, with the increase in operating time and the influence of harsh field conditions, some hydraulic circuit breakers experience hydraulic oil leakage, requiring oil replenishment. Current maintenance and troubleshooting methods for oil replenishment face problems such as long operating times, low efficiency, and the potential for induced voltage.

[0003] During routine inspections of substations, if the hydraulic oil level of a high-voltage circuit breaker is found to be low, immediate live-line oil replenishment should be arranged to address the issue. Currently, the hydraulic oil for circuit breakers is mainly replenished by directly injecting hydraulic oil into the oil inlet on the top cover of the existing spare oil tank. However, since the top cover of the tank is approximately 2.4 meters above the ground, at least three workers are required during the process: one to hold the ladder, one to stand on the ladder to replenish the oil, and another to pass tools and assist with other tasks. Because the circuit breaker being replenished is in operation, extra attention must be paid to whether the circuit breaker is operating stably and whether the amount of oil added is within the specified range. Furthermore, the adequacy of fall protection measures for personnel on the ladder, the completeness of anti-inductive current measures, and the difficulty of disassembling and assembling the fixing bolts on the top of the oil tank must be considered. These combined factors result in a lengthy on-site operation and low work efficiency.

[0004] A current patent, CN115929737A, discloses a hydraulic mechanism oil replenishment device and an uninterrupted oil replenishment method for circuit breakers. This device, belonging to the field of circuit breaker technology, mainly includes an oil replenishment tank and a low-pressure pipeline connecting to the drain port of the circuit breaker's oil tank. A connecting oil delivery pipeline exists between the oil replenishment tank and the low-pressure pipeline. This oil delivery pipeline includes an oil pump and a first control valve for controlling the opening and closing of the oil delivery pipeline. The low-pressure pipeline has a second control valve for controlling the opening and closing of the low-pressure pipeline. The second control valve is located downstream of the first control valve and at the bottom of the circuit breaker's oil tank. However, this Chinese patent focuses on the oil replenishment device and does not propose an intelligent control method. Summary of the Invention

[0005] This invention solves the problems of long working time and low efficiency in current high-voltage circuit breaker oil replenishment field operations. It proposes an intelligent control method and system for the oil replenishment device, which enables remote data acquisition and control of the oil replenishment device and the high-voltage circuit breaker, ensuring the uniformity and accuracy of control. At the same time, it greatly improves the working efficiency of high-voltage circuit breaker oil replenishment field operations.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent control method for an oil replenishment device, comprising the following steps:

[0007] S1, remotely obtain the real-time status of the high-voltage circuit breaker, determine the preset oil replenishment amount, and connect the oil replenishment device to the high-voltage circuit breaker;

[0008] S2, a vacuum pumping device is used to remove air from the hydraulic oil of the high-voltage circuit breaker, and a gas detection device is used to determine whether the air has been completely removed.

[0009] S3 filters and removes impurities from the oil in the oil replenishment cylinder, and uses a stepless speed regulation module to control the flow rate of the oil pump.

[0010] S4. Based on the real-time oil pump replenishment amount and the number of times the oil pump flow rate is adjusted, the total oil replenishment amount within the oil pump time period is obtained, and it is determined whether the total oil replenishment amount has reached the preset oil replenishment amount.

[0011] In this technical solution, the real-time status of the high-voltage circuit breaker is first remotely acquired. This real-time status is mainly composed of various collected data. Based on the real-time status, a preset oil replenishment amount is determined. Then, the oil replenishment device is connected to the high-voltage circuit breaker requiring oil replenishment. Next, the hydraulic tank of the high-voltage circuit breaker is evacuated, and the air inside is periodically checked for discharge. Then, the oil pump is started, and the oil in the replenishment cylinder is filtered to remove impurities. When the oil pump flow rate needs adjustment, a stepless speed control module is used for adjustment. Finally, the total oil replenishment amount for the final time period is calculated using the collected data and compared with the preset oil replenishment amount to determine whether to stop the oil pump. This technical solution can greatly improve the efficiency of on-site oil replenishment operations for high-voltage circuit breakers while shortening the operation time.

[0012] The present invention is further configured such that step S1 includes the following steps:

[0013] S11, encrypt the collected data from the sensing device installed on the high-voltage circuit breaker to obtain real-time status information about the high-voltage circuit breaker;

[0014] S12, Determine the preset oil replenishment amount for the high-voltage circuit breaker based on the real-time status information, specifications, and historical oil replenishment amount of the high-voltage circuit breaker;

[0015] S13. Select the appropriate oil replenishment device, connect the oil replenishment device to the hydraulic tank of the high-voltage circuit breaker, and check whether all parts are sealed.

[0016] In this technical solution, firstly, real-time status information about the high-voltage circuit breaker is obtained, specifically collected by sensors installed on the high-voltage circuit breaker and transmitted to a remote control terminal via encrypted transmission. The remote control terminal can simultaneously control several high-voltage circuit breakers for oil replenishment and stores historical data for various high-voltage circuit breakers. Subsequently, based on the decrypted real-time status information of the high-voltage circuit breaker, the specifications and model information of the high-voltage circuit breaker pre-stored in the remote control terminal, and the historical oil replenishment amount for that high-voltage circuit breaker, while also considering other unexpected influencing factors, the remote control terminal determines the preset oil replenishment amount for this replenishment. Finally, based on the preset oil replenishment amount, a matching oil replenishment device is determined. After connecting the oil replenishment device to the high-voltage circuit breaker, the device is checked for air or oil leaks. After the checks are completed, it is ready for standby.

[0017] The present invention is further configured such that the encryption processing of the collected data from the sensing device installed on the high-voltage circuit breaker includes the following steps:

[0018] S111: After analog-to-digital conversion of the collected data from each sensor within the time period, the data is classified and sorted.

[0019] S112, normalize each type of collected data, and scale each normalized data according to a scaling factor to form a scaled binary array;

[0020] S113, store the binary array in groups of 8 bits. If there are less than 8 bits, pad with 0. Convert the binary array into decimal numbers in groups of 8 bits. Form a decimal array by grouping three decimal numbers.

[0021] S114: Map the decimal array to image color blocks, and form an encrypted image containing x*y image color blocks in sequence, where x is the number of rows of image color blocks in the encrypted image and y is the number of columns of image color blocks in the encrypted image.

[0022] In this technical solution, the data collected by the sensors of the high-voltage circuit breaker is encrypted before being sent to the remote control terminal to ensure data security. First, the collected data from each sensor is preprocessed and classified. Then, the data is normalized and formed into a binary array. The binary array is then grouped and stored in 8-bit units and converted into decimal numbers. Three decimal numbers form a decimal data, which is used to represent the RGB value of a certain area. Finally, the decimal array is represented as RGB values ​​and mapped to image color blocks, ultimately forming an encrypted image with x*y, which is transmitted in the form of an encrypted image. Direct and fast transmission over the external network is also an option.

[0023] The present invention is further configured such that step S11 includes:

[0024] The encrypted image and key are sent to the remote control terminal. The key includes the zero padding position, the scaling factor, and the order of the encrypted image. After being sent to the remote control terminal, the image is decrypted to obtain real-time status information about the high-voltage circuit breaker.

[0025] In this technical solution, after encryption is completed and sent to the remote control terminal, the decryption process is performed on the remote control terminal. The data is decrypted using a key. First, the encrypted image is restored according to the order of the encrypted image. Several decimal arrays are obtained through the reverse process of mapping, and binary arrays are obtained according to the zero padding positions. The original collected data is obtained according to the scaling factor. For different collected data, the above decryption process is performed until all collected data is decrypted to obtain the original real-time status information. The key can be sent through the intranet.

[0026] The present invention is further configured such that step S2 includes the following steps:

[0027] S21, The remote control terminal issues a vacuuming command to start the vacuuming device connected to the oil replenishment device;

[0028] S22, while vacuuming, the remote control terminal sends a gas detection command, and the gas detection device detects the content of various gases in the hydraulic tank of the high-voltage circuit breaker.

[0029] S23. Based on the collected gas contents, the set gas contents are periodically compared to determine whether the gas contents are less than the set gas contents, so as to determine whether the air has been completely discharged.

[0030] In this technical solution, the vacuum pumping device is directly started and controlled by a remote control terminal. At the same time as the vacuum pumping device is started, gas detection is performed in the hydraulic tank of the high-voltage circuit breaker to obtain the content of various gases. At intervals, the detected gas contents are compared with the set gas contents values. If the detected gas contents are all lower than the set gas contents values, it is determined that the air has been completely discharged; if the detected gas contents are equal to or greater than the set gas contents value, it is determined that the air has not been completely discharged.

[0031] The present invention is further configured such that step S3 includes the following steps:

[0032] S31, the remote control terminal sends a start command to start the oil pump, maintains the preset flow rate, and uses a stepless speed regulation module to control the flow rate of the oil pump;

[0033] S32, using a filtration device to filter and remove impurities from the oil in the oil replenishment cylinder or the oil in the pipeline connected to the oil replenishment cylinder.

[0034] In this technical solution, a filter device is used to filter and remove impurities from the oil. The filter device can be directly installed in the oil replenishment cylinder or on the oil outlet pipe of the oil replenishment cylinder, or both. After the filtration and impurity removal are completed, the remote control terminal sends an oil pump start command, and the oil pump is started. If the flow rate of the oil pump needs to be adjusted, it is controlled by a stepless speed regulation module, which includes a direct motor and a potentiometer.

[0035] The present invention is further configured such that step S4 includes the following steps:

[0036] S41, collect the real-time oil pump replenishment rate and replenishment amount, and count the number of times the oil pump flow rate is adjusted to obtain the total oil pump replenishment amount within a certain period of time.

[0037] S42 compares the total replenishment amount within the time period with the preset replenishment amount in real time, and determines whether the deviation between the total replenishment amount and the preset replenishment amount is less than 10%. If it is less than 10%, the oil pump replenishment is stopped immediately. If it is greater than 10%, the replenishment continues.

[0038] In this technical solution, the oil pump replenishment rate and replenishment amount are monitored in real time by a sensor installed in the oil pump outlet pipeline. The monitored data, combined with the number of times the oil pump flow rate is adjusted, can be used to calculate the total oil replenishment amount of the oil pump within a certain period of time. The oil pump replenishment is stopped based on the real-time comparison between the total replenishment amount and the preset replenishment amount.

[0039] The present invention is further configured such that: if the total amount of oil replenishment during the time period is the same as the preset amount of oil replenishment, a first safety measure is triggered to forcibly stop the oil pump; if the total amount of oil replenishment during the time period is greater than the preset amount of oil replenishment, a second safety measure is triggered to cut off the power to the oil replenishment device.

[0040] In this technical solution, although the remote control terminal immediately sends a stop oil pump replenishment command when the deviation between the total replenishment amount and the preset replenishment amount is less than 10%, for safety reasons, if the remote control terminal malfunctions or the transmission fails, the oil pump may fail to stop. Therefore, a primary safety measure and a secondary safety measure are set, namely, the automatic forced stop of the oil pump and the power-off treatment of the entire replenishment device.

[0041] An intelligent control system for an oil replenishment device, applicable to the aforementioned intelligent control method for an oil replenishment device, includes:

[0042] The remote control terminal issues control commands to remotely control the start and stop of the oil pump and vacuum device, and decrypts and processes the data.

[0043] An encrypted transmission module encrypts the collected data and transmits it over the external network;

[0044] The oil replenishment device control terminal receives control commands and performs preprocessing of collected data.

[0045] The control system of this technical solution mainly includes a remote control terminal, an encrypted transmission module, and a refueling device control terminal. The remote control terminal is connected to the encrypted transmission module, which is connected to the refueling device control terminal. The encrypted transmission module includes an encrypted transmission channel and a normal transmission channel. The uploading of collected data is carried out through the encrypted transmission channel, while the issuance of instructions and other information exchanges can be carried out through the normal transmission channel.

[0046] The present invention is further configured such that: the remote control terminal includes an internal instruction sending module and a decryption module, the instruction sending module is connected to a data processing module, and the instruction sending module issues corresponding control instructions based on the results of the data processing module.

[0047] In this technical solution, the remote control terminal includes an instruction sending module, a decryption module, and a data processing module. The instruction sending module is connected to the data processing module, and the decryption module is connected to the data processing module.

[0048] The present invention has the following beneficial effects:

[0049] 1. The present invention relates to an intelligent control method for an oil replenishment device, which enables remote data acquisition and control of the oil replenishment device and the high-voltage circuit breaker, ensuring the uniformity and accuracy of control, and at the same time greatly improving the work efficiency of on-site oil replenishment operations for the high-voltage circuit breaker.

[0050] 2. The present invention relates to an intelligent control system for a refueling device, which improves the accuracy of control by utilizing the collaborative operation between a remote control terminal, an encrypted transmission module, and the control terminal of the refueling device. Attached Figure Description

[0051] Figure 1 This is a flowchart illustrating an intelligent control method for an oil replenishment device according to the present invention.

[0052] Figure 2 This is a connection diagram of an intelligent control system for an oil replenishment device according to the present invention;

[0053] Figure 3 This is a schematic diagram of the connection of the remote control terminal of the intelligent control system for the oil replenishment device of the present invention. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only one preferred embodiment of this invention and are only used to explain this invention. They do not limit the scope of protection of this invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0055] Example 1:

[0056] This embodiment proposes an intelligent control method for an oil replenishment device, which mainly includes the following steps, for details of which can be found in the following reference. Figure 1 .

[0057] Step S1: Remotely acquire the real-time status of the high-voltage circuit breaker, determine the preset oil replenishment amount, and connect the oil replenishment device to the high-voltage circuit breaker.

[0058] Step S1, in more detail, includes the following sub-steps.

[0059] Step S11: Encrypt the collected data from the sensing device installed on the high-voltage circuit breaker to obtain real-time status information about the high-voltage circuit breaker.

[0060] For step S11, after the data is acquired by the sensing device on the high-voltage circuit breaker, a series of encryption processes are required, and the data is transmitted to the remote control terminal to obtain real-time status information about the high-voltage circuit breaker.

[0061] More specifically, the process of encrypting the data collected by the sensors installed on the high-voltage circuit breaker includes the following steps.

[0062] Step S111: After the analog-to-digital conversion of the collected data from each sensing device within the time period, the data is classified and arranged.

[0063] After the data is collected by each sensor, preprocessing operations are performed, including analog-to-digital conversion, classification, and sorting.

[0064] In this embodiment, after the analog-to-digital conversion, a screening and impurity removal process is also included.

[0065] Step S112: Normalize the collected data for each type, and scale each normalized data according to a scaling factor to form a scaled binary array.

[0066] First, after step S112, all types of data are classified and sorted, and then normalization is performed on each type of data.

[0067] After normalization, each piece of data of each type is scaled according to its own scaling factor. The scaling factor needs to be backed up and stored in the key for later decryption.

[0068] After scaling, it forms a contiguous binary array.

[0069] Step S113: Store the binary array in groups of 8 bits. If there are less than 8 bits, pad with 0. Convert the binary array into decimal numbers in groups of 8 bits. Form a decimal array by grouping three decimal numbers together.

[0070] In this step, the binary array obtained in step S112 is processed and stored in groups of 8 bits.

[0071] For binary arrays less than 8 bits, 0 is used for padding. The 0 padding needs to be recorded and backed up in the key.

[0072] Perform decimal conversion in groups of 8 bits.

[0073] A decimal array is formed by grouping three decimal numbers in sequence. In this embodiment, the decimal array is represented as (a, b, c), where a, b, and c are all decimal numbers from 0 to 255.

[0074] Step S114: Map the decimal array to image color blocks and form an encrypted image containing x*y image color blocks in sequence, where x is the number of rows of image color blocks in the encrypted image and y is the number of columns of image color blocks in the encrypted image.

[0075] First, the decimal data is mapped to image color blocks. Specifically, a decimal array is used to represent RGB values, and the corresponding image colors are represented by the RGB values.

[0076] In this embodiment, there is a decimal array (240, 200, 150), where 240, 200, and 150 represent the R value, G value, and B value, respectively.

[0077] Based on the image color it represents, it is converted into a corresponding image color patch, with each image color patch being the same size.

[0078] An encrypted image is then formed in sequence, consisting of x*y image color blocks.

[0079] The arrangement of color blocks in the image is similar to that of a data matrix.

[0080] The resulting encrypted image is used for data transmission.

[0081] In addition, step S11 also includes the following process.

[0082] The encrypted image and key are sent to the remote control terminal. The key includes the zero padding position, the scaling factor, and the order of the encrypted images.

[0083] After being sent to the remote control terminal, the data is decrypted to obtain real-time status information about the high-voltage circuit breaker.

[0084] After encryption is completed and sent to the remote control terminal, the data is decrypted using a key.

[0085] Step S12: Determine the preset oil replenishment amount for the high-voltage circuit breaker based on its real-time status information, specifications, and historical oil replenishment amount.

[0086] Specifically, based on the real-time status information of the decrypted high-voltage circuit breaker, the specification and model information of the high-voltage circuit breaker pre-stored in the remote control terminal, and the historical oil replenishment amount of the high-voltage circuit breaker, while also taking into account other unexpected influencing factors, the preset oil replenishment amount for this oil replenishment is determined.

[0087] Step S13: Select the appropriate oil replenishment device, connect the oil replenishment device to the hydraulic tank of the high-voltage circuit breaker, and check whether all parts are sealed.

[0088] First, select the oil replenishment device, and then perform a seal check after selection.

[0089] More specifically, sealing checks include checking for air leaks and oil leaks.

[0090] Step S2: Use a vacuum pump to remove air from the hydraulic oil of the high-voltage circuit breaker, and use a gas detection device to determine whether the air has been completely removed.

[0091] Step S2 mainly includes the following sub-steps.

[0092] Step S21: The remote control terminal issues a vacuuming command to start the vacuuming device connected to the oil replenishment device.

[0093] During step S21, after receiving the vacuuming command, the control terminal of the oil replenishment device controls the corresponding vacuuming device to start.

[0094] In this embodiment, a vacuum pump is used as the vacuuming device. Other vacuuming devices can also be used as long as they can achieve the vacuuming effect. No limitation is made here.

[0095] In step S22, while the vacuum is being drawn, the remote control terminal sends a gas detection command, and the gas detection device detects the content of various gases in the hydraulic tank of the high-voltage circuit breaker.

[0096] For step S22, a gas detection command is issued simultaneously with step S21.

[0097] Upon receiving a gas detection command, the control unit of the oil replenishment device controls the corresponding gas detection device to perform detection.

[0098] In this embodiment, the type of gas detection device is not limited.

[0099] Step S23: Based on the collected gas contents, periodically compare them with the set gas contents value to determine whether the gas contents are less than the set gas contents value, so as to determine whether the air has been completely discharged.

[0100] More specifically, the content of various gases collected at each time interval is judged and compared. First, a set gas content value is set, which is generally low, almost close to 0.

[0101] In this technical solution, determining whether the air has been completely expelled is essentially based on whether it is close to being completely expelled, which can be assumed to be completely expelled.

[0102] In this technical solution, if the content of all the collected gases is less than the set gas content value, it is determined that the air has been completely discharged.

[0103] In this technical solution, if the content of any of the collected gases is greater than or equal to the set gas content value, it is determined that the air has not been completely discharged.

[0104] Step S3: Filter the oil in the oil replenishment cylinder to remove impurities, and use a stepless speed regulation module to control the flow rate of the oil pump.

[0105] The specific process of step S3 mainly includes the following steps.

[0106] Step S31: The remote control terminal sends an oil pump start command to start the oil pump and maintain the preset flow rate; and uses the stepless speed regulation module to control the flow rate of the oil pump.

[0107] The remote control terminal sends the corresponding oil pump start command to the oil replenishment device control terminal, which then controls the oil pump to start.

[0108] In addition, if speed adjustment is required, the flow rate of the oil pump is controlled by a continuously variable speed control module, which includes a direct motor and a potentiometer.

[0109] Step S32: This step uses a filtration device to filter and remove impurities from the oil in the oil replenishment cylinder or the oil in the pipe connected to the oil replenishment cylinder.

[0110] In this embodiment, the filter device can be directly installed inside the oil replenishment cylinder or on the oil outlet pipe of the oil replenishment cylinder, or the filter device can be installed in both places; no limitation is made here.

[0111] Step S4: Based on the real-time oil pump replenishment amount and the number of times the oil pump flow rate is adjusted, the total oil replenishment amount during the oil pump period is obtained, and it is determined whether the total oil replenishment amount has reached the preset oil replenishment amount.

[0112] The specific process of step S4 mainly includes the following sub-steps.

[0113] Step S41: Collect the real-time oil pump replenishment rate and replenishment amount, and count the number of times the oil pump flow rate is adjusted to obtain the total oil pump replenishment amount within a certain period of time.

[0114] First, the real-time oil pump replenishment rate and replenishment volume are collected.

[0115] The number of times the oil pump flow rate was adjusted was then recorded.

[0116] Finally, the total amount of oil replenished by the oil pump during the time period was calculated.

[0117] Step S42: Compare the total replenishment amount within the time period with the preset replenishment amount in real time, and determine whether the deviation between the total replenishment amount and the preset replenishment amount is less than 10%. If it is less than 10%, stop the oil pump replenishment immediately. If it is greater than 10%, continue replenishing oil.

[0118] This step is a real-time comparison process, which mainly determines the deviation between the total oil replenishment amount of the oil pump and the preset oil replenishment amount.

[0119] If the deviation between the total oil replenishment amount of the oil pump and the preset oil replenishment amount is less than 10%, the oil pump oil replenishment will be stopped immediately.

[0120] If the deviation between the total oil replenishment amount and the preset oil replenishment amount is greater than 10%, oil replenishment will continue.

[0121] If the deviation between the total oil replenishment amount of the oil pump and the preset oil replenishment amount is exactly 10%, the result is the same as when the deviation is less than 10%.

[0122] The oil replenishment device in this technical solution includes an oil replenishment device control terminal, an oil pump, a vacuum pump, a gas detection device, and a filter. The oil replenishment device control terminal receives instructions from a remote control terminal to start or stop the oil pump, the vacuum pump, and the gas detection device.

[0123] In this embodiment of the technical solution, the real-time status of the high-voltage circuit breaker is first remotely acquired. The real-time status is mainly composed of various collected data. Based on the real-time status, the preset oil replenishment amount is determined. Then, the oil replenishment device is connected to the high-voltage circuit breaker that needs oil replenishment.

[0124] Subsequently, the hydraulic tank of the high-voltage circuit breaker is evacuated, and the air inside is periodically checked to see if it has been purged. Then, the oil pump is started and the oil in the replenishment cylinder is filtered to remove impurities. When it is necessary to adjust the flow rate of the oil pump, a stepless speed regulation module is used for adjustment.

[0125] Finally, the total oil replenishment amount of the oil pump within the final time period is calculated based on the collected data, and compared with the preset oil replenishment amount to determine whether to stop the oil pump from working.

[0126] This technical solution can greatly improve the efficiency of on-site oil replenishment operations for high-voltage circuit breakers, while shortening the operation time.

[0127] In this embodiment, the technical solution first obtains real-time status information about the high-voltage circuit breaker, specifically collected by sensors installed on the high-voltage circuit breaker and transmitted to a remote control terminal via encrypted transmission. The remote control terminal can simultaneously control several high-voltage circuit breakers for oil replenishment and stores historical data for various high-voltage circuit breakers. Then, based on the decrypted real-time status information of the high-voltage circuit breaker, the specifications and model information of the high-voltage circuit breaker pre-stored in the remote control terminal, and the historical oil replenishment amount for that high-voltage circuit breaker, while also considering other unexpected influencing factors, the remote control terminal determines the preset oil replenishment amount for this replenishment. Finally, based on the preset oil replenishment amount, a matching oil replenishment device is determined. After connecting the oil replenishment device to the high-voltage circuit breaker, the device is checked for air or oil leaks. After the check is completed, it is ready for use.

[0128] In this embodiment, the data collected by the sensors of the high-voltage circuit breaker is encrypted before being sent to the remote control terminal to ensure data security. First, the collected data from each sensor is preprocessed and classified. Then, the data is normalized to form a binary array. The binary array is then grouped and stored in 8-bit units and converted to decimal numbers. Three decimal numbers together form a decimal data set, which is used to represent the RGB values ​​of a certain area. Finally, the decimal array is represented as RGB values ​​and mapped to image color blocks, ultimately forming an encrypted image with x*y values. This encrypted image is then transmitted and can be directly and quickly transmitted over an external network.

[0129] In this embodiment, after encryption is completed and sent to the remote control terminal, a decryption process is performed on the remote control terminal. The data is decrypted using a key. First, the encrypted images are restored according to their order. Several decimal arrays are obtained through the reverse mapping process, and binary arrays are obtained according to the zero padding positions. The original collected data is obtained according to the scaling factor. For different collected data, the above decryption process is performed until all collected data is decrypted to obtain the original real-time status information. The key can be sent through the intranet.

[0130] In this embodiment, the vacuuming device is directly started and controlled by a remote control terminal. At the same time as the vacuuming device is started, gas detection is performed in the hydraulic tank of the high-voltage circuit breaker to obtain the content of various gases. At intervals, the detected gas contents are compared with the set gas content values. If the detected gas contents are all lower than the set gas content values, it is determined that the air has been completely discharged. If the detected gas contents are equal to or greater than the set gas content value, it is determined that the air has not been completely discharged.

[0131] In this embodiment, a filtration device is used to filter and remove impurities from the oil. The filtration device can be directly installed inside the oil replenishment cylinder or on the oil outlet pipe of the oil replenishment cylinder, or both. After the filtration and impurity removal are completed, the remote control terminal sends an oil pump start command, and the oil pump is started. If the flow rate of the oil pump needs to be adjusted, it is controlled by a stepless speed regulation module, which includes a direct motor and a potentiometer.

[0132] In this embodiment, the oil pump replenishment rate and replenishment amount are monitored in real time by a sensor installed in the oil pump outlet pipeline. The monitored data, combined with the number of times the oil pump flow rate is adjusted, can be used to calculate the total replenishment amount of the oil pump within a certain period of time. The oil pump replenishment is stopped based on the real-time comparison between the total replenishment amount and the preset replenishment amount.

[0133] This embodiment also proposes an intelligent control system for an oil replenishment device, applicable to the aforementioned intelligent control method for an oil replenishment device. It mainly includes the following components, which can be found in the following references. Figure 2 and Figure 3 .

[0134] The remote control terminal issues control commands to remotely control the start and stop of the oil pump and vacuum device, and decrypts and processes the data.

[0135] The encrypted transmission module encrypts the collected data and transmits it over the external network.

[0136] The oil replenishment device control terminal receives control commands and performs preprocessing of collected data.

[0137] The control system of this technical solution mainly includes a remote control terminal, an encrypted transmission module, and a refueling device control terminal. The remote control terminal is connected to the encrypted transmission module, which is connected to the refueling device control terminal. The encrypted transmission module includes an encrypted transmission channel and a normal transmission channel. The uploading of collected data is carried out through the encrypted transmission channel, while the issuance of instructions and other information exchanges can be carried out through the normal transmission channel.

[0138] For more details, please refer to [link / reference]. Figure 2 The remote control terminal includes an internal command sending module and a decryption module. The command sending module is connected to a data processing module, and the command sending module issues corresponding control commands based on the results of the data processing module.

[0139] In the technical solution of this embodiment, the remote control terminal includes an instruction sending module, a decryption module, and a data processing module. The instruction sending module is connected to the data processing module, and the decryption module is connected to the data processing module.

[0140] Example 2

[0141] Based on steps S1, S2 and S3 of Example 1, step S4 is further modified.

[0142] Step S4: Based on the real-time oil pump replenishment amount and the number of times the oil pump flow rate is adjusted, the total oil replenishment amount during the oil pump period is obtained, and it is determined whether the total oil replenishment amount has reached the preset oil replenishment amount.

[0143] The specific process of step S4 mainly includes the following sub-steps.

[0144] Step S41: Collect the real-time oil pump replenishment rate and replenishment amount, and count the number of times the oil pump flow rate is adjusted to obtain the total oil pump replenishment amount within a certain period of time.

[0145] First, the real-time oil pump replenishment rate and replenishment volume are collected.

[0146] The number of times the oil pump flow rate was adjusted was then recorded.

[0147] Finally, the total amount of oil replenished by the oil pump during the time period was calculated.

[0148] Step S42: Compare the total replenishment amount within the time period with the preset replenishment amount in real time, and determine whether the deviation between the total replenishment amount and the preset replenishment amount is less than 10%. If it is less than 10%, stop the oil pump replenishment immediately. If it is greater than 10%, continue replenishing oil.

[0149] This step is a real-time comparison process, which mainly determines the deviation between the total oil replenishment amount of the oil pump and the preset oil replenishment amount.

[0150] If the deviation between the total oil replenishment amount of the oil pump and the preset oil replenishment amount is less than 10%, the oil pump oil replenishment will be stopped immediately.

[0151] If the deviation between the total oil replenishment amount and the preset oil replenishment amount is greater than 10%, oil replenishment will continue.

[0152] If the deviation between the total oil replenishment amount of the oil pump and the preset oil replenishment amount is exactly 10%, the result is the same as when the deviation is less than 10%.

[0153] Based on the above steps, if the total amount of oil replenishment during the time period is the same as the preset amount of oil replenishment, a safety measure will be triggered to forcibly stop the oil pump.

[0154] If the total amount of oil replenished during the specified time period exceeds the preset amount of oil replenishment, a secondary safety measure is triggered to cut off the power to the oil replenishment device.

[0155] In the technical solution of this embodiment, although the remote control terminal immediately sends a stop oil pump oil replenishment command when the deviation between the total replenishment amount and the preset replenishment amount is less than 10%, for safety reasons, if the remote control terminal malfunctions or the transmission fails, the oil pump may fail to stop.

[0156] Therefore, primary and secondary safety measures were implemented, namely, automatic forced shutdown of the oil pump and power cut-off of the overall oil replenishment device, to further ensure good safety.

[0157] Example 3

[0158] Step S1: Remotely acquire the real-time status of the high-voltage circuit breaker, determine the preset oil replenishment amount, and connect the oil replenishment device to the high-voltage circuit breaker.

[0159] Step S1, in more detail, includes the following sub-steps.

[0160] Step S11: Encrypt the collected data from the sensing device installed on the high-voltage circuit breaker to obtain real-time status information about the high-voltage circuit breaker.

[0161] For step S11, after the data is acquired by the sensing device on the high-voltage circuit breaker, a series of encryption processes are required, and the data is transmitted to the remote control terminal to obtain real-time status information about the high-voltage circuit breaker.

[0162] More specifically, the process of encrypting the data collected by the sensors installed on the high-voltage circuit breaker includes the following steps.

[0163] Step S111: After the analog-to-digital conversion of the collected data from each sensing device within the time period, the data is classified and arranged.

[0164] After the data is collected by each sensor, preprocessing operations are performed, including analog-to-digital conversion, classification, and sorting.

[0165] In this embodiment, after the analog-to-digital conversion, a screening and impurity removal process is also included.

[0166] Step S112: Normalize the collected data for each type, and scale each normalized data according to a scaling factor to form a scaled binary array.

[0167] First, after step S112, all types of data are classified and sorted, and then normalization is performed on each type of data.

[0168] After normalization, each piece of data of each type is scaled according to its own scaling factor. The scaling factor needs to be backed up and stored in the key for later decryption.

[0169] After scaling, it forms a contiguous binary array.

[0170] Step S113: Store the binary array in groups of 8 bits. If there are less than 8 bits, pad with 0. Convert the binary array into decimal numbers in groups of 8 bits. Form a decimal array by grouping three decimal numbers together.

[0171] In this step, the binary array obtained in step S112 is processed and stored in groups of 8 bits.

[0172] For binary arrays less than 8 bits, 0 is used for padding. The 0 padding needs to be recorded and backed up in the key.

[0173] Perform decimal conversion in groups of 8 bits.

[0174] A decimal array is formed by grouping three decimal numbers in sequence. In this embodiment, the decimal array is represented as (a, b, c), where a, b, and c are all decimal numbers from 0 to 255.

[0175] Step S114: Map the decimal array to image color blocks and form an encrypted image containing x*y image color blocks in sequence, where x is the number of rows of image color blocks in the encrypted image and y is the number of columns of image color blocks in the encrypted image.

[0176] First, the decimal data is mapped to image color blocks. Specifically, a decimal array is used to represent RGB values, and the corresponding image colors are represented by the RGB values.

[0177] In this embodiment, there is a decimal array (240, 200, 150), where 240, 200, and 150 represent the R value, G value, and B value, respectively.

[0178] Based on the image color it represents, it is converted into a corresponding image color patch, with each image color patch being the same size.

[0179] An encrypted image is then formed according to a randomly generated order. The encrypted image consists of x*y image color blocks.

[0180] The arrangement of color blocks in the image is similar to that of a data matrix.

[0181] The resulting encrypted image is used for data transmission.

[0182] In this embodiment, the difference from Embodiment 1 is that the image color blocks are not arranged in a sequential order to form the encrypted image, but are arranged in a randomly generated order.

[0183] The random order is retrieved from a random database. In the set random database, you only need to input the number of color blocks in the image and the specific values ​​of x and y in the encrypted image to generate a random order. Simultaneously, it can also output a table showing the transformation between the random generated order and the normal order (i.e., the order in Example 1). This transformation table is backed up and stored in the key for subsequent decryption.

Claims

1. An intelligent control method for an oil replenishment device, Its characteristics include the following steps: S1, remotely obtain the real-time status of the high-voltage circuit breaker, determine the preset oil replenishment amount, and connect the oil replenishment device to the high-voltage circuit breaker; S11, encrypt the collected data from the sensing device installed on the high-voltage circuit breaker to obtain real-time status information about the high-voltage circuit breaker; S12, determine the preset oil replenishment amount for the high-voltage circuit breaker based on the real-time status information, specifications, and historical oil replenishment amount of the high-voltage circuit breaker; S13, Select the appropriate oil replenishment device, connect the oil replenishment device to the hydraulic tank of the high-voltage circuit breaker, and check whether all parts are sealed. S2, a vacuum pumping device is used to remove air from the hydraulic oil of the high-voltage circuit breaker, and a gas detection device is used to determine whether the air has been completely removed. S3 filters and removes impurities from the oil in the oil replenishment cylinder, and uses a stepless speed regulation module to control the flow rate of the oil pump. S4. Based on the real-time oil pump replenishment amount and the number of times the oil pump flow rate is adjusted, the total oil replenishment amount within the oil pump time period is obtained, and it is determined whether the total oil replenishment amount has reached the preset oil replenishment amount.

2. The intelligent control method for an oil replenishment device according to claim 1, characterized in that, The encryption process for the data collected by the sensing device installed on the high-voltage circuit breaker includes the following steps: S111: After analog-to-digital conversion of the collected data from each sensor within the time period, the data is classified and sorted. S112, normalize each type of collected data, and scale each normalized data according to a scaling factor to form a scaled binary array; S113, store the binary array in groups of 8 bits. If there are less than 8 bits, pad with 0. Convert the binary array into decimal numbers in groups of 8 bits. Form a decimal array by grouping three decimal numbers. S114: Map the decimal array to image color blocks, and form an encrypted image containing x*y image color blocks in sequence, where x is the number of rows of image color blocks in the encrypted image and y is the number of columns of image color blocks in the encrypted image.

3. The intelligent control method for an oil replenishment device according to claim 2, characterized in that, Step S11 further includes: The encrypted image and key are sent to the remote control terminal. The key includes the zero padding position, the scaling factor, and the order of the encrypted image. After being sent to the remote control terminal, the image is decrypted to obtain real-time status information about the high-voltage circuit breaker.

4. The intelligent control method for an oil replenishment device according to claim 1, 2, or 3, characterized in that, Step S2 includes the following steps: S21, The remote control terminal issues a vacuuming command to start the vacuuming device connected to the oil replenishment device; S22, while vacuuming, the remote control terminal sends a gas detection command, and the gas detection device detects the content of various gases in the hydraulic tank of the high-voltage circuit breaker. S23. Based on the collected gas contents, the set gas contents are periodically compared to determine whether the gas contents are less than the set gas contents, so as to determine whether the air has been completely discharged.

5. The intelligent control method for an oil replenishment device according to claim 4, characterized in that, Step S3 includes the following steps: S31, the remote control terminal sends a start command to start the oil pump, maintains the preset flow rate, and uses a stepless speed regulation module to control the flow rate of the oil pump; S32, using a filtration device to filter and remove impurities from the oil in the oil replenishment cylinder or the oil in the pipeline connected to the oil replenishment cylinder.

6. The intelligent control method for an oil replenishment device according to claim 1 or 5, characterized in that, Step S4 includes the following steps: S41, collect the real-time oil pump replenishment rate and replenishment amount, and count the number of times the oil pump flow rate is adjusted to obtain the total oil pump replenishment amount within a certain period of time. S42 compares the total replenishment amount within the time period with the preset replenishment amount in real time, and determines whether the deviation between the total replenishment amount and the preset replenishment amount is less than 10%. If it is less than 10%, the oil pump replenishment is stopped immediately. If it is greater than 10%, the replenishment continues.

7. The intelligent control method for an oil replenishment device according to claim 6, characterized in that, If the total oil replenishment amount during the specified time period is the same as the preset oil replenishment amount, a first safety measure is triggered to forcibly stop the oil pump; if the total oil replenishment amount during the specified time period is greater than the preset oil replenishment amount, a second safety measure is triggered to cut off the power to the oil replenishment device.

8. An intelligent control system for an oil replenishment device, applicable to the intelligent control method for an oil replenishment device as described in any one of claims 1-7, characterized in that, include The remote control terminal issues control commands to remotely control the start and stop of the oil pump and vacuum device, and decrypts and processes the data. An encrypted transmission module encrypts the collected data and transmits it over the external network; The oil replenishment device control terminal receives control commands and performs preprocessing of collected data.

9. The intelligent control system for an oil replenishment device according to claim 8, characterized in that, The remote control terminal includes an internal instruction sending module and a decryption module. The instruction sending module is connected to a data processing module, and the instruction sending module issues corresponding control instructions based on the results of the data processing module.

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