Intelligent disconnecting switch state monitoring and automatic operating system

Abstract

The invention discloses an intelligent disconnecting switch state monitoring and automatic operating system which comprises an intelligent control unit, the intelligent control unit is respectively connected with a state monitoring unit, an automatic operating unit, a safety protection unit and a fault early warning unit, and the state monitoring unit, the automatic operating unit and the safety protection unit are respectively connected with a disconnecting switch; wherein the intelligent control unit comprises a data processing module, a state judgment module, an operation decision module, a fault diagnosis module and a communication interface module; the state monitoring unit comprises a data acquisition module and a sensor module; the automatic operation unit comprises an electric operation module, a remote control module and a local control module; the safety protection unit comprises an electrical locking module, a mechanical locking module and an authority management module; the fault early warning unit comprises a data storage module and an early warning sending module; according to the invention, real-time monitoring, remote control, intelligent judgment and fault early warning are integrated, and the state of the disconnecting switch is comprehensively reflected.

Description

Technical Field

[0001] The present invention belongs to the technical field of disconnector status monitoring, and particularly relates to an intelligent disconnector status monitoring and automatic operation system. Background Art

[0002] The high-voltage disconnector is an important switching device in the electrical systems of power plants and substations. Its main function is to ensure the safety of high-voltage electrical appliances and devices during maintenance work and play a role in isolating voltage. The high-voltage disconnector is the high-voltage electrical equipment with the largest usage and the widest application range in the power system. However, since the main function of the high-voltage disconnector is to isolate, it does not break or close load current and fault current, remains in the closed state for a long time and is rarely operated, and its structure is relatively simple and easy to manufacture. Therefore, the disconnector is the electrical equipment that is least valued by the manufacturing and using departments.

[0003] This has led to the operation department easily neglecting the maintenance management of high-voltage disconnectors in management. The maintenance is in a free state, without unified and legal maintenance procedures, and there is a common phenomenon of long-term disrepair. In operation, the high-voltage disconnector is actually in a state of "not repaired unless it breaks, repaired only when it breaks, and breaks again after repair", resulting in frequent failures of high-voltage disconnectors.

[0004] Therefore, it is necessary to regularly inspect the operating disconnector, once per shift in the distribution substation with on-duty personnel; at least once a week in the distribution substation without on-duty personnel. The main content of the daily inspection is to observe the relevant ammeter, and its operating current should be within the normal range; secondly, according to the structure of the disconnector, check that its conductive part is in good contact, without overheating and discoloration, the insulating part should be intact, and there are no flashover discharge traces; and then the transmission part should be normal (without distortion, pin shaft detachment, etc.).

[0005] Currently, traditional disconnectors mostly rely on manual operation and regular inspection, with problems such as low operation efficiency, large safety hazards, and untimely status monitoring. In the prior art, some disconnectors are already equipped with electric operating mechanisms, but the degree of intelligence is insufficient, lacking real-time status monitoring and automatic judgment functions. In addition, the existing monitoring means are mostly limited to local parameter collection, unable to comprehensively reflect the status of the disconnector, and lacking an effective fault warning mechanism.

[0006] Therefore, to solve the above problems, it is necessary to develop an intelligent disconnector status monitoring and automatic operation system. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an intelligent disconnector status monitoring and automatic operation system, which integrates real-time monitoring, remote control, intelligent judgment, and fault warning, and comprehensively reflects the status of the disconnector.

[0008] The object of the present invention is achieved as follows: An intelligent disconnector status monitoring and automatic operation system, including an intelligent control unit, which is respectively connected with a status monitoring unit, an automatic operation unit, a safety protection unit and a fault warning unit, and the status monitoring unit, the automatic operation unit and the safety protection unit are respectively connected with the disconnector; Among them, the intelligent control unit includes a data processing module, a status judgment module, an operation decision module, a fault diagnosis module and a communication interface module. The data processing module is connected to the status monitoring unit to receive monitoring data and process it. The status judgment module judges the status of the disconnector according to the monitoring data. The operation decision module decides whether to perform opening and closing operations based on the monitoring data and the operating status of the power system. The fault diagnosis module establishes a fault prediction model based on machine learning algorithms to analyze historical data and identify potential faults. The communication interface module is used for communication connection with the upper-level monitoring system to realize data sharing and remote control; The status monitoring unit is connected to the disconnector, and monitors the operating status of the disconnector in real time, and sends the monitoring data to the intelligent control unit. The status monitoring unit includes a data acquisition module, and a sensor module connected to the data acquisition module and arranged at the disconnector. The data acquisition module transmits the sensor data to the intelligent control unit in real time; The automatic operation unit is connected to the disconnector, and automatically controls the opening and closing operations of the disconnector according to the instructions of the intelligent control unit, and feeds back the operation result information to the intelligent control unit. The automatic operation unit includes an electric operation module connected to the disconnector, as well as a remote control module and a local control module; The safety protection unit is connected to the disconnector to prevent misoperation of the disconnector. The safety protection unit includes an electrical interlock module, a mechanical interlock module and a permission management module; The fault warning unit issues a warning for abnormal data or fault information. The fault warning unit includes a data storage module and a warning sending module.

[0009] Further, the data processing module in the intelligent control unit uses an embedded processor to process the monitoring data in real time.

[0010] Further, the sensor module in the status monitoring unit includes a position sensor, a temperature sensor, a current and voltage sensor, and a vibration sensor.

[0011] Further, the position sensor is arranged at the disconnector knife switch to monitor the closing and opening positions in real time, and is specifically implemented by an optoelectronic sensor or a Hall sensor; the temperature sensor is arranged at the contacts and connection points of the disconnector to monitor the heating condition, and is specifically implemented by an infrared sensor or a thermocouple; the current and voltage sensors are arranged at the circuit connection of the disconnector to collect electrical parameters in real time, and are specifically implemented by integrating a current transformer and a voltage transformer; the vibration sensor is used to monitor the mechanical vibration during the operation of the disconnector to judge the mechanical state.

[0012] Further, in the automatic operation unit, the electric operation module drives the contacts to act to realize the closing and opening operations by using a motor assembly.

[0013] Further, the remote control module in the automatic operation unit includes a wireless communication module and a wired communication module. The wireless communication module is implemented by using a 5G communication component or a LoRa communication component, and the wired communication module is implemented by using an optical fiber communication component.

[0014] Further, in the safety protection unit, the electrical interlock module detects the circuit state before the switch operation; the mechanical interlock module prevents misoperation through mechanical locks during the switch operation; the permission management module is used to set operation permissions and authorize staff for remote or local operations.

[0015] Further, the fault warning unit further includes a warning indicator for displaying the fault warning state.

[0016] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: by setting up a real-time monitoring unit, a sensor module composed of multiple sensors is used to monitor the operating state of the disconnector, including operating parameters such as position, temperature, current, and voltage, in real time. And through the high-speed data acquisition module, the sensor data is uploaded to the intelligent control unit in real time. Based on the monitoring data, the intelligent control unit realizes intelligent judgment, operation decision-making, and fault diagnosis, and supports remote automatic control of the closing and opening operations of the disconnector through the automatic operation unit. And through the fault warning unit, early warnings are issued for abnormal data or fault information. At the same time, a safety protection unit is set up to prevent misoperation and ensure operation safety; it integrates real-time monitoring, remote control, intelligent judgment, and fault warning, comprehensively reflecting the state of the disconnector. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention.

[0018] Figure 2 is a system principle block diagram of the present invention.

[0019] In the figure: 1. Intelligent control unit; 2. Status monitoring unit; 3. Automatic operation unit; 4. Safety protection unit; 5. Fault warning unit. Detailed implementation manners

[0020] The technical solution of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0021] As Figure 1 、 Figure 2 shown, an intelligent disconnector status monitoring and automatic operation system includes an intelligent control unit, and the intelligent control unit is respectively connected to a status monitoring unit, an automatic operation unit, a safety protection unit, and a fault warning unit. The status monitoring unit, the automatic operation unit, and the safety protection unit are respectively connected to the disconnector.

[0022] Among them, the intelligent control unit includes a data processing module, a status judgment module, an operation decision module, a fault diagnosis module, and a communication interface module. The data processing module is connected to the status monitoring unit to receive and process monitoring data. Specifically, the data processing module can use an embedded processor to process the monitoring data in real time; the status judgment module judges the status of the disconnector according to the monitoring data, the operation decision module decides whether to perform opening and closing operations based on the monitoring data and the operating status of the power system, the fault diagnosis module establishes a fault prediction model based on a machine learning algorithm to analyze historical data to identify potential faults, and the communication interface module is used for communication connection with the upper-level monitoring system to achieve data sharing and remote control.

[0023] Among them, the status monitoring unit is connected to the disconnector, and monitors the operating status of the disconnector in real time, and sends the monitoring data to the intelligent control unit. The status monitoring unit includes a data acquisition module, and a sensor module connected to the data acquisition module and arranged at the disconnector. The data acquisition module transmits the sensor data to the intelligent control unit in real time; specifically, the sensor module includes a position sensor, a temperature sensor, a current and voltage sensor, and a vibration sensor; the position sensor is arranged at the disconnector knife switch to monitor the opening and closing positions in real time, and can be specifically implemented by an optoelectronic sensor or a Hall sensor; the temperature sensor is arranged at the disconnector contact and connection point to monitor the heating condition, and can be specifically implemented by an infrared sensor or a thermocouple; the current and voltage sensor is arranged at the disconnector circuit connection to collect electrical parameters in real time, and can be specifically implemented by integrating a current transformer and a voltage transformer; the vibration sensor is used to monitor the mechanical vibration during the operation of the disconnector to judge the mechanical state.

[0024] Among them, the automatic operation unit is connected to the disconnector, automatically controls the opening and closing operations of the disconnector according to the instructions of the intelligent control unit, and feeds back the operation result information to the intelligent control unit. The automatic operation unit includes an electric operation module connected to the disconnector, as well as a remote control module and a local control module. Specifically, the electric operation module uses a motor assembly to drive the contact to actuate to achieve the opening and closing operations. The remote control module includes a wireless communication module and a wired communication module. The wireless communication module is implemented using a 5G communication component or a LoRa communication component, and the wired communication module is implemented using an optical fiber communication component.

[0025] Among them, the safety protection unit is connected to the disconnector to prevent misoperation of the disconnector. The safety protection unit includes an electrical interlock module, a mechanical interlock module, and a permission management module. Specifically, the electrical interlock module detects the circuit state before the switch operation. The mechanical interlock module prevents misoperation through a mechanical lock during the switch operation. The permission management module is used to set the operation permissions and authorize the staff to perform remote or local operations.

[0026] Among them, the fault warning unit issues a warning for abnormal data or fault information. The fault warning unit includes a data storage module and a warning sending module. The fault warning unit also includes a warning indicator for displaying the fault warning status.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that modifications or equivalent replacements can still be made to the specific implementation manners of the present invention. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. An intelligent disconnector status monitoring and automatic operation system, characterized in that: It includes an intelligent control unit, which is respectively connected to a status monitoring unit, an automatic operation unit, a safety protection unit, and a fault warning unit. The status monitoring unit, the automatic operation unit, and the safety protection unit are respectively connected to the disconnector. Among them, the intelligent control unit includes a data processing module, a status judgment module, an operation decision-making module, a fault diagnosis module, and a communication interface module. The data processing module is connected to the status monitoring unit to receive and process monitoring data. The status judgment module judges the status of the disconnector according to the monitoring data. The operation decision-making module decides whether to perform opening and closing operations based on the monitoring data and the operating status of the power system. The fault diagnosis module establishes a fault prediction model based on machine learning algorithms to analyze historical data and identify potential faults. The communication interface module is used for communication connection with the upper-level monitoring system to achieve data sharing and remote control. The status monitoring unit is connected to the disconnector, and monitors the operating status of the disconnector in real time, and sends the monitoring data to the intelligent control unit. The status monitoring unit includes a data acquisition module, and a sensor module connected to the data acquisition module and arranged at the disconnector. The data acquisition module transmits the sensor data to the intelligent control unit in real time. The automatic operation unit is connected to the disconnector, and automatically controls the opening and closing operations of the disconnector according to the instructions of the intelligent control unit, and feeds back the operation result information to the intelligent control unit. The automatic operation unit includes an electric operation module connected to the disconnector, as well as a remote control module and a local control module. The safety protection unit is connected to the disconnector to prevent misoperation of the disconnector. The safety protection unit includes an electrical interlock module, a mechanical interlock module, and a permission management module. The fault warning unit issues warnings for abnormal data or fault information. The fault warning unit includes a data storage module and a warning sending module.

2. The intelligent disconnector status monitoring and automatic operation system according to claim 1, wherein: In the intelligent control unit, the data processing module uses an embedded processor to process the monitoring data in real time.

3. An intelligent disconnector status monitoring and automatic operation system according to claim 1, characterized in that: In the status monitoring unit, the sensor module includes a position sensor, a temperature sensor, a current and voltage sensor, and a vibration sensor.

4. The intelligent disconnector status monitoring and automatic operation system according to claim 3, characterized in that: The position sensor is arranged at the disconnector blade to monitor the opening and closing position in real time, and is specifically implemented by an optoelectronic sensor or a Hall sensor. The temperature sensor is arranged at the disconnector contact and connection point to monitor the heating condition, and is specifically implemented by an infrared sensor or a thermocouple. The current and voltage sensor is arranged at the disconnector circuit connection to collect electrical parameters in real time, and is specifically implemented by integrating a current transformer and a voltage transformer. The vibration sensor is used to monitor the mechanical vibration during the operation of the disconnector to judge the mechanical state.

5. An intelligent disconnector status monitoring and automatic operation system according to claim 1, characterized in that: In the automatic operation unit, the electric operation module uses a motor assembly to drive the contact to move to achieve opening and closing operations.

6. An intelligent disconnector status monitoring and automatic operation system according to claim 1, characterized in that: In the automatic operation unit, the remote control module includes a wireless communication module and a wired communication module. The wireless communication module is implemented by a 5G communication component or a LoRa communication component. The wired communication module is implemented by an optical fiber communication component.

7. An intelligent disconnector status monitoring and automatic operation system according to claim 1, characterized in that: Before the switch operation, the electrical interlock module in the safety protection unit detects the circuit state; during the switch operation, the mechanical interlock module prevents misoperation through mechanical locks; the permission management module is used to set operation permissions and authorize staff for remote or local operations.

8. An intelligent disconnector status monitoring and automatic operation system according to claim 1, characterized in that: The fault warning unit further includes warning indicator lights for displaying the fault warning status.

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