Method, medium and system for shortening offline time of oil chromatography online monitoring device

Abstract

The invention provides a method, a medium and a system for shortening offline time of an oil chromatography online monitoring device, and belongs to the technical field of oil chromatography online monitoring. Comprising the steps that when the oil chromatography online monitoring device breaks down, a control module sends a first control instruction to a switch module so as to control the switch module to be disconnected and a power supply module to be powered off; and the control module sends a second control instruction to the switch module at a preset time interval so as to control the switch module to be switched on and the power supply module to be powered on, so that the oil chromatography online monitoring device is restarted. According to the invention, the automatic restarting device is additionally arranged on the oil chromatography online monitoring device, so that the oil chromatography online monitoring device can be restarted automatically, the oil chromatography online monitoring device can respond and process in time when having a fault, the fault processing time is shortened by automatically restarting the oil chromatography online monitoring device, and the working efficiency is improved. Furthermore, the off-line time of the oil chromatography online monitoring device is shortened, and the safe operation of the transformer is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of oil chromatogram online monitoring devices, and in particular to a method, a medium and a system for shortening the offline time of an oil chromatogram online monitoring device. Background Art

[0002] Oil-immersed power transformers are key equipment in the power grid, and their insulators are made of mineral oil. During long-term operation, the insulating oil will age and release various dissolved gases. Monitoring and analyzing the types and concentrations of these gases can determine the working status of the insulator and realize early warning and diagnosis of transformer faults. Gas online monitoring technology has therefore become an important means of detecting the status of power equipment. At present, the oil chromatography online monitoring device is mainly used to monitor the characteristic gases in the transformer oil in real time. Its working principle is to introduce the transformer oil sample into the detector, use the carrier gas to carry the gas sample through the chromatographic separation column, and obtain the qualitative and quantitative analysis results of the gas according to the retention time of different gases, so as to timely discover the latent faults inside the equipment, grasp the operating status of the equipment at any time, and judge whether the equipment is operating normally. Therefore, the oil chromatography online monitoring device is one of the important equipment to ensure the safe operation of the transformer. If the oil chromatography online monitoring device is offline for too long, it will not be able to provide real-time oil chromatography analysis data, and it may not be able to timely discover and solve the overheating, discharge and other faults inside the transformer, thereby affecting the safe operation of the transformer. Summary of the invention

[0003] In view of this, the present invention provides a method for shortening the offline time of an oil chromatogram online monitoring device, so as to solve the technical problem that the existing oil chromatogram online monitoring device has a long offline time and affects the safe operation of the transformer.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A method for shortening the offline time of an oil chromatography online monitoring device comprises the following steps:

[0006] When the oil chromatogram online monitoring device fails, the control module sends a first control instruction to the switch module to control the switch module to disconnect and the power supply module to cut off power;

[0007] The control module sends a second control instruction to the switch module at a preset time interval to control the switch module to be turned on and the power supply module to be powered on, thereby restarting the oil chromatography online monitoring device.

[0008] Preferably, when the oil chromatogram online monitoring device fails, the control module sends a first control instruction to the switch module, including the following steps:

[0009] When the oil chromatography online monitoring device fails, identifying the failure type of the failure;

[0010] Determine whether the fault type is a preset fault type;

[0011] When the fault type is a preset fault type, the control module sends a first control instruction to the switch module.

[0012] Preferably, the identifying the fault type of the fault comprises the following steps:

[0013] Get fault information;

[0014] The fault information is input into a pre-trained fault type recognition model to obtain the fault type corresponding to the fault information.

[0015] Preferably, the control module is a timing relay.

[0016] Preferably, the time parameter of the timing relay is determined according to the operating time of the oil chromatography online monitoring device.

[0017] Preferably, when the oil chromatogram online monitoring device fails, the control module sends the first control instruction to the switch module, further comprising the following steps:

[0018] When the oil chromatogram online monitoring device fails, the current data transmission mode of the oil chromatogram online monitoring device is obtained;

[0019] When the data transmission mode is wireless transmission, the control module sends a first control instruction to the switch module.

[0020] Preferably, the method further comprises: when the data transmission mode is wired transmission, restarting the oil chromatogram online monitoring device through a restart program of a backend computer of the oil chromatogram online monitoring device.

[0021] The present invention also provides a computer-readable storage medium, on which computer program instructions are stored; when the computer program instructions are executed by a processor, the method for shortening the offline time of an oil chromatogram online monitoring device as described above is implemented.

[0022] The present invention also provides a system for shortening the offline time of an oil chromatogram online monitoring device, comprising: the computer-readable storage medium as described above.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention installs an automatic restart device on the oil chromatogram online monitoring device so that the oil chromatogram online monitoring device can automatically restart, so that timely response processing can be achieved when a fault occurs in the oil chromatogram online monitoring device. The fault processing time is shortened by automatically restarting the oil chromatogram online monitoring device, and practical problems such as low work efficiency and long processing time caused by personnel entering the station to restart the device can be effectively solved, thereby shortening the offline time of the oil chromatogram online monitoring device and ensuring the safe operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0026] Figure 2 It is a device block diagram of the present invention.

[0027] Figure 3 This is a statistical arrangement diagram of fault types of oil chromatography online monitoring device.

[0028] Figure 4 FIG. 4 is another device block diagram of the present invention.

[0029] Figure 5 This is a comparison chart of the offline time of the oil chromatography online monitoring device before and after the implementation of the method of the present invention. DETAILED DESCRIPTION

[0030] The technical solutions and technical effects of the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0031] Please also see Figure 1 and Figure 2 , a method for shortening the offline time of an oil chromatography online monitoring device, comprising the following steps:

[0032] When the oil chromatogram online monitoring device fails, the control module sends a first control instruction to the switch module to control the switch module to disconnect and the power supply module to cut off power;

[0033] The control module sends a second control instruction to the switch module at a preset time interval to control the switch module to be turned on and the power supply module to be powered on, thereby restarting the oil chromatogram online monitoring device.

[0034] The inventor used the Ningxia Power Grid Intelligent Operation and Inspection System to query the online status of 330kv and above oil chromatography online monitoring devices in the area under the team's jurisdiction from September to December 2022 and conducted statistics, and obtained Table 1:

[0035] Table 1

[0036]

[0037] As can be seen from Table 1, the average offline time of 330kV and above oil chromatography online monitoring devices from September to December 2022 was 41.45h, which is significantly higher than the 24h requirement.

[0038] In order to find out the reasons for the long offline time of the oil chromatogram online monitoring device, the inventor classified and counted the types of faults that occurred in the oil chromatogram online monitoring device in the past few months and the offline time of each type of fault, and obtained the statistical results as shown in Table 2 and Table 3. Figure 3 :

[0039] Table 2

[0040]

[0041] According to Table 2 and Figure 3 It can be seen that the data upload interruption fault cycle is 63.16% of the oil chromatography online monitoring device fault offline cycle, which is the crux of the long offline time of the oil chromatography online monitoring device. Among them, the reasons for the data upload interruption fault mainly include equipment failure, data acquisition problems, communication failures, power supply interference, software problems, etc., and the reasons for the failure need to be investigated and processed one by one, resulting in a long data upload interruption fault cycle. However, the inventor found in daily work that for wireless communication interruption, unstable communication connection, industrial control board, mainboard program stuck, some hardware running errors cannot be automatically reset, background computer program running errors, crashes, etc., a better self-recovery effect can be achieved by restarting and powering off. Therefore, the inventor installed an automatic restart device on the oil chromatography online monitoring device, so that the oil chromatography online monitoring device can automatically restart, so that when the oil chromatography online monitoring device fails, it can respond and process in time, shorten its fault processing time by automatically restarting the oil chromatography online monitoring device, and can effectively solve the practical problems such as low work efficiency and long processing time limit caused by personnel entering the station to restart the device, shorten the offline time of the oil chromatography online monitoring device, and ensure the safe operation of the transformer.

[0042] For details, please refer again to Figure 2The present invention adds a control module and a switch module to the oil chromatography online monitoring device, and the switch module is connected to the power supply module of the oil chromatography online monitoring device to control the on and off of the power supply module. When the oil chromatography online monitoring device fails, the control module sends a first control instruction to the switch module to control the switch module to disconnect. When the switch module is disconnected, the power supply module is powered off, thereby ensuring that the oil chromatography online monitoring device is completely powered off, and the device is in a stable state during the restart process, avoiding current shock or other potential problems during the restart process. After power failure, it is necessary to wait for a period of time to allow the capacitors and other components inside the oil chromatography online monitoring device to discharge. Therefore, the control module sends a second control instruction to the switch module after a preset time interval to control the switch module to turn on, so that the power supply module is powered on, the oil chromatography online monitoring device is started, and the oil chromatography online monitoring device is automatically restarted. Among them, the preset time is set to 20-30s, that is, after the control module sends the first control instruction, it sends the second control instruction to the switch module after an interval of 20-30s.

[0043] Furthermore, when the oil chromatogram online monitoring device fails, the control module sends a first control instruction to the switch module, including the following steps:

[0044] When the oil chromatography online monitoring device fails, identify the fault type;

[0045] Determine whether the fault type is a preset fault type;

[0046] When the fault type is a preset fault type, the control module sends a first control instruction to the switch module.

[0047] Only certain fault types of the oil chromatography online monitoring device can be processed by the restart device. Therefore, it is necessary to identify the fault type of the fault occurring in the oil chromatography online monitoring device, so that the corresponding processing method can be determined more accurately according to the type of fault, thereby improving the fault processing efficiency and shortening the offline time of the oil chromatography online monitoring device. Specifically, the control module is connected to the server of the oil chromatography online monitoring device in communication, and the control module is connected to the switch module in communication via wireless transmission. When a fault occurs in the oil chromatography online monitoring device, the fault type is identified by the server and it is determined whether the fault type is a preset fault type, wherein the preset fault type is a type of fault that can be processed by the restart device. When the fault type is a preset fault type, it indicates that the fault can be handled by restarting. Therefore, the server can send a restart signal to the control module, and the control module sends a first control instruction to the switch module to control the switch module to disconnect and power off the oil chromatography online monitoring device. The control module sends a second control instruction to the switch module at a preset interval to control the switch module to turn on, and the oil chromatography online monitoring device starts, thereby realizing automatic restart of the oil chromatography online monitoring device. Therefore, the fault of the oil chromatography online monitoring device can be responded to and resolved in time by restarting, thereby improving the fault handling efficiency and shortening the offline time of the oil chromatography online monitoring device.

[0048] In some embodiments, when the fault type is not a preset fault type, it indicates that the fault cannot be handled by restarting, so it is necessary to send a reminder message to the staff to prompt the staff to handle the fault in time, thereby shortening the fault handling cycle. Specifically, the oil chromatography online monitoring device is equipped with a GSM SMS function. When the fault type is not a preset fault type, the server sends a text message to the staff's mobile phone through the GSM network for reminder, wherein the text message may include the fault type of the fault, so that the staff can know what kind of fault has occurred, and then determine the fault handling method more quickly, thereby improving the fault handling efficiency.

[0049] Further, identifying the fault type of the fault includes the following steps:

[0050] Get fault information;

[0051] The fault information is input into a pre-trained fault type recognition model to obtain the fault type corresponding to the fault information.

[0052] When the oil chromatogram online monitoring device fails, the server obtains the fault information reported by the device, which includes fault content, fault time, faulty equipment, etc. The fault information is input into the pre-trained fault type recognition model to obtain the fault type corresponding to the fault information, so as to improve the efficiency of fault type recognition, so that the fault handling method can be determined more quickly according to the fault type, thereby improving the efficiency of fault handling and shortening the offline time of the oil chromatogram online monitoring device.

[0053] In some embodiments, the training method of the fault type identification model is as follows: obtain multiple historical fault information of the oil chromatography online monitoring device, and determine the corresponding fault type according to the historical fault information. Divide the multiple historical fault information and the corresponding fault types into a training set and a test set. Establish an extension neural network, and input the training set into the extension neural network for training. After the training is completed, input the test set into the extension neural network to test the accuracy of the extension neural network to obtain a trained fault type identification model. By obtaining the fault type corresponding to the fault information through the fault type identification model, the efficiency and accuracy of fault type identification can be improved, thereby improving the efficiency of fault handling and shortening the offline time of the oil chromatography online monitoring device.

[0054] For further information, see Figure 4 , the control module is a timing relay. The oil chromatography online monitoring device can be restarted regularly through the timing relay and the switch module. Among them, the time parameter of the timing relay is determined according to the operation time of the oil chromatography online monitoring device. The oil chromatography online monitoring device generally samples twice a day, and its sampling cycle is 12 hours. The oil chromatography analysis data will be uploaded to the PMS and the intelligent operation and inspection platform every 12 hours. If the oil chromatography online monitoring device is offline for more than 24 hours, the company will issue a serious defect processing order to urge processing and require offline data monitoring. Therefore, the restart cycle can be set to 14-18 hours.

[0055] In some embodiments, the timing relay includes a first timing relay and a second timing relay, wherein one end of the second timing relay is connected to the switch module, and the other end is connected to the first timing relay, the first timing relay is used to set the restart cycle, and the second timing relay is used to set the time between power off and power on of the device during restart. Specifically, after the first timing relay receives the input signal, the timing circuit of the first timing relay starts timing, and when it reaches 14-18h, the contact of the first timing relay will close, thereby sending the input signal to the second timing relay; after the second timing relay receives the input signal, the contact of the second timing relay is disconnected, thereby disconnecting the switch module and powering off the power supply module; at the same time, the timing circuit of the second timing relay starts timing, and when it reaches 20-30s, the contact of the second timing relay is closed, the switch module is turned on, and the power supply module is powered on, thereby realizing the timed restart of the oil chromatography online monitoring device.

[0056] In some embodiments, the switch module is a timing switch, one end of which is connected to a timing relay, and the other end is connected to a power supply module of the oil chromatography online monitoring device. Specifically, after the timing relay receives an input signal, the timing circuit of the timing relay starts timing, and when 14-18 hours are reached, the contact of the timing relay will close, thereby controlling the timing switch to start working. The timing switch can automatically complete the on-off operation at a specific time by setting a fixed time parameter, thereby realizing the on-off of the power supply module and completing the timed restart of the oil chromatography online monitoring device.

[0057] In some embodiments, the control module further includes a wireless communication module, which has no control function and is used to query the restart response of the switch module. Specifically, after the oil chromatogram online monitoring device automatically restarts or fails to restart, it can return a signal of successful or failed restart to the switch module, which is then sent by the switch module to the staff through the wireless communication network, so that the staff can know the restart status of the oil chromatogram online monitoring device in time. When the oil chromatogram online monitoring device fails to restart, the cause of the restart failure can be promptly checked to shorten the fault handling cycle, thereby shortening the offline time of the oil chromatogram online monitoring device.

[0058] In some embodiments, when the oil chromatography online monitoring device fails, the control module sends the first control instruction to the switch module further comprising the following steps:

[0059] When the oil chromatogram online monitoring device fails, the current data transmission mode of the oil chromatogram online monitoring device is obtained;

[0060] When the data transmission mode is wireless transmission, the control module sends a first control instruction to the switch module.

[0061] Among them, the oil chromatography online monitoring device is controlled and operated by multiple internal industrial control boards, circuit boards, and program boards. After data collection, the data is sent to the provincial main station through wired or wireless transmission communication methods. Specifically, the oil chromatography online monitoring device usually adopts the TCP / IP network protocol and supports the IEC61850 standard protocol, which makes remote detection and diagnosis and remote browsing and access to data possible. This design allows the oil chromatography online monitoring device to transmit data through both wired network connection and wireless network. When the oil chromatography online monitoring device performs wireless transmission, the data collected by the device is transmitted to the designated server through wireless network technologies such as Wi-Fi, Bluetooth or GPRS. During wired transmission, communication is performed through the RS485 communication interface, and the data collected by the main transformer oil chromatography online monitoring device is transmitted to the designated computer or server through the network cable. According to different transmission methods, the present invention designs different restart methods to ensure that the oil chromatography online monitoring device can be restarted.

[0062] Please see Figure 1 When the data transmission mode is wireless transmission, as an implementation method, the server identifies the fault type of the fault. When the fault type is a preset fault type, the control module sends a first control instruction to the switch module to control the switch module to disconnect and power off the power supply module; the control module sends a second control instruction to the switch module at a preset interval to control the switch module to turn on and power on the power supply module; thereby, the oil chromatography online monitoring device can be restarted according to the type of fault in the oil chromatography online monitoring device, and the fault handling of the oil chromatography online monitoring device is more targeted, and the fault can be handled in time.

[0063] As another implementation, the control module is a timing relay, so the oil chromatography online monitoring device can be restarted at a scheduled time through the timing relay, so that potential faults of the oil chromatography online monitoring device can be handled in advance, the fault handling efficiency of the oil chromatography online monitoring device can be improved, and the offline time of the oil chromatography online monitoring device can be shortened.

[0064] In some embodiments, when the data transmission mode is wired transmission, the oil chromatography online monitoring device is restarted by the restart program of the background machine of the oil chromatography online monitoring device. Since the restart of the oil chromatography online monitoring device realized by the hardware structure of the control module and the switch module is not suitable for wired transmission, the restart program needs to be written into the background machine system for the oil chromatography online monitoring device with wired transmission, so that the device can realize soft restart. Specifically, when the oil chromatography online monitoring device fails, the server can call the restart program of the background machine system. When the restart program runs, the restart signal is sent to the power supply module of the oil chromatography online monitoring device. The power supply module is turned on and off according to the restart signal to realize the control of the oil chromatography online monitoring device to restart. Furthermore, the restart program can also set a preset period to restart the oil chromatography online monitoring device on a scheduled basis. Specifically, the running time of the oil chromatography online monitoring device is checked by the restart program. When the running time reaches the time set by the preset period, the restart program executes the restart operation, thereby controlling the oil chromatography online monitoring device to restart.

[0065] In some embodiments, the oil chromatogram online monitoring device communicates via the RS485 communication interface when performing wired transmission. Therefore, the access status of the communication interface can be obtained through the server to determine whether the current transmission mode of the oil chromatogram online monitoring device is wired transmission or wireless transmission. Specifically, the server can query the port information of the communication interface of the oil chromatogram online monitoring device and obtain the operating status of each port. When the port is connected and in a normal transmission state, it indicates that the current transmission mode of the oil chromatogram online monitoring device is wired transmission.

[0066] In some embodiments, the network connection mode of the oil chromatography online monitoring device can also be viewed through a network diagnostic tool. Wired transmission will display information such as the IP address and gateway, while wireless transmission will display which Wi-Fi network it is connected to, thereby determining the current transmission mode of the oil chromatography online monitoring device based on the displayed content.

[0067] The inventors used the above method to conduct 30 simulation experiments on the fault restart time of the oil chromatography online monitoring device, and statistically calculated the fault restart time as shown in Table 3:

[0068] Table 3

[0069]

[0070] It can be seen from Table 3 that by adding an automatic restart device to the oil chromatogram online monitoring device, the oil chromatogram online monitoring device can be automatically restarted, which effectively shortens the restart time of the oil chromatogram online monitoring device in case of failure.

[0071] Furthermore, the inventors counted the offline time of the oil chromatogram online monitoring device using the method of the present invention, and obtained Table 4; at the same time, the offline time of the oil chromatogram online monitoring device before and after the installation of the restart device was compared to obtain Figure 5 .

[0072] Table 4

[0073]

[0074] from Figure 5 It can be seen that, compared with the past, after the restart device was installed in the oil chromatogram online monitoring device and the method of the present invention was implemented, the offline time of the oil chromatogram online monitoring device was significantly reduced. Moreover, it can be seen from Table 4 that after the method of the present invention was adopted, the offline time of the oil chromatogram online monitoring device was less than 18 hours, meeting the requirement of less than 24 hours. It can be seen that the method of reducing the offline time of the oil chromatogram online monitoring device of the present invention can shorten the fault handling time, thereby shortening the offline time of the oil chromatogram online monitoring device.

[0075] A restart device is installed on the oil chromatography online monitoring device to control the oil chromatography online monitoring device to automatically restart. While quickly responding to defect processing, it can reduce the frequency of personnel entering the station for operation and maintenance. For remote substations, it can also effectively reduce the use of public vehicle resources, and can effectively solve practical problems such as low work efficiency and long processing time caused by personnel entering the station to restart the device. It can quickly respond to and handle faults of the oil chromatography online monitoring device, help judge the degree of device failure, improve the speed of fault elimination, and effectively improve the online rate and availability of the online monitoring device, thereby improving economic benefits and work efficiency, and reducing costs and increasing efficiency.

[0076] The present invention also provides a computer-readable storage medium on which computer program instructions are stored; when the computer program instructions are executed by a processor, the method for shortening the offline time of an oil chromatogram online monitoring device as described above is implemented.

[0077] The present invention also provides a system for shortening the offline time of an oil chromatogram online monitoring device, comprising: the computer-readable storage medium as described above.

[0078] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A method for shortening the offline time of an oil chromatography online monitoring device, characterized in that: The following steps are involved: When the oil chromatogram online monitoring device fails, the control module sends a first control instruction to the switch module to control the switch module to disconnect and the power supply module to cut off power; The control module sends a second control instruction to the switch module at a preset time interval to control the switch module to be turned on and the power supply module to be powered on, thereby restarting the oil chromatogram online monitoring device.

2. The method for shortening the offline time of an oil chromatography online monitoring device according to claim 1, characterized in that: When the oil chromatogram online monitoring device fails, the control module sends a first control instruction to the switch module, including the following steps: When the oil chromatogram online monitoring device fails, identifying the failure type of the failure; Determine whether the fault type is a preset fault type; When the fault type is a preset fault type, the control module sends a first control instruction to the switch module.

3. The method for shortening the offline time of an oil chromatography online monitoring device according to claim 2, characterized in that: The identifying the fault type of the fault comprises the following steps: Get fault information; The fault information is input into a pre-trained fault type recognition model to obtain the fault type corresponding to the fault information.

4. The method for shortening the offline time of an oil chromatography online monitoring device according to claim 1, characterized in that: The control module is a timing relay.

5. The method for shortening the offline time of an oil chromatography online monitoring device according to claim 4, characterized in that: The time parameters of the timing relay are determined according to the operating time of the oil chromatography online monitoring device.

6. The method for shortening the offline time of an oil chromatography online monitoring device according to any one of claims 1 to 5, characterized in that: When the oil chromatogram online monitoring device fails, the control module sends the first control instruction to the switch module, which further includes the following steps: When the oil chromatogram online monitoring device fails, the current data transmission mode of the oil chromatogram online monitoring device is obtained; When the data transmission mode is wireless transmission, the control module sends a first control instruction to the switch module.

7. The method for shortening the offline time of an oil chromatography online monitoring device according to claim 6, characterized in that: The method further comprises: when the data transmission mode is wired transmission, restarting the oil chromatogram online monitoring device through a restart program of a background machine of the oil chromatogram online monitoring device.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, the method for shortening the offline time of an oil chromatography online monitoring device according to any one of claims 1 to 7 is implemented.

9. A system for shortening the offline time of an oil chromatography online monitoring device, characterized in that: include: The computer readable storage medium of claim 8.

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