Isolation switch monitoring and control device

Abstract

The utility model relates to a disconnecting switch monitoring and control device, the device is provided with a driving assembly, an information acquisition module and a monitoring control module, the monitoring control module comprises a cabinet, a terminal unit, a control unit, a display unit and an input unit, and the terminal unit, the display unit and the input unit are all arranged on the cabinet. The control unit is arranged in the case, the control unit is electrically connected with the terminal unit, the display unit and the input unit, the terminal unit is electrically connected with the driving assembly and the information acquisition module, and the driving assembly is connected with the isolating switch; the information acquisition module is electrically connected with the driving assembly and the isolating switch; thus, the information acquisition module sends the acquired state information of the disconnecting switch to the control unit through the terminal unit, the control unit judges whether the disconnecting switch meets the switching-on and switching-off conditions or not according to the information, and the judgment result is displayed through the display unit, so that the fault position of the disconnecting switch is judged and eliminated in time through the display unit.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a monitoring and control device for an isolating switch. Background Art

[0002] In the power system, the isolating switch is an important device used to isolate the power supply, switch operation, connect and disconnect the small current circuit and ensure the safety of maintenance personnel. The isolating switch is used in large quantities, has a wide range of applications, and has high working reliability requirements. The safety and reliability of the isolating switch is crucial to the safety of the power grid, equipment and operators.

[0003] In order to maintain the safe operation of the line, the disconnector often needs to be opened and closed; however, the existing disconnectors have the following two problems. First, the disconnector is operated outdoors for a long time, and the conductive circuit and transmission part of the disconnector are exposed to the external environment for a long time. Due to the influence of the external environment such as wind, rain, dust, air pollution, etc. on the disconnector, the opening and closing operation of the disconnector is difficult, and it is impossible to open and close the switch in bad weather. The phenomenon of misoperation also occurs from time to time, which brings great inconvenience to the switching operation of the substation and the line; second, the staff must operate directly under the disconnector when pulling and closing the switch, which poses a threat to the personal safety of the operator.

[0004] In order to solve the above technical problems, the technical solution disclosed in the Chinese invention patent with patent application number CN200910014564.X is a remote monitoring device for isolating switches, including isolating switches, motors, travel switches, monitoring panels, control cables, cameras and searchlights, wherein the monitoring panel is installed in the main control room of the substation, and the others are installed on the poles. The camera is installed on one side of the isolating switch through the control cable, and the motor and travel switch are installed under the isolating switch, and the motor drives the isolating switch to open and close. Therefore, the automatic opening and closing of the isolating switch and the full-process monitoring of the operation can be realized without the need for staff to operate on site, which not only ensures the safety of the operators, but also saves manpower, greatly improves the work efficiency, and effectively improves the automation level of equipment operation of the substation and line management department. In addition, the present invention is more suitable for application in substation systems, especially for the automation operation of unmanned substations.

[0005] However, the above-mentioned prior art has the following technical problems: in the above-mentioned remote monitoring device for the isolating switch, remote monitoring of the isolating switch is achieved through a camera. The camera can only monitor the opening and closing conditions of the isolating switch, but cannot monitor the status information of the isolating switch. When a fault occurs in the isolating switch, it cannot be eliminated in time, affecting the efficiency of fault detection. Utility Model Content

[0006] In view of this, it is necessary to provide a disconnect switch monitoring and control device to monitor the status information of the disconnect switch, eliminate the fault in time when the disconnect switch fails, and improve the efficiency of fault detection.

[0007] The utility model provides a monitoring and control device for an isolating switch, comprising a driving component, an information collection module and a monitoring and control module, wherein the monitoring and control module comprises a chassis, a terminal unit, a control unit, a display unit and an input unit, wherein the terminal unit, the display unit and the input unit are all arranged on the chassis, the control unit is arranged in the chassis, the control unit is electrically connected to the terminal unit, the display unit and the input unit, the terminal unit is electrically connected to the driving component and the information collection module respectively, and the driving component is connected to the isolating switch;

[0008] The information acquisition module is electrically connected to the drive component and the isolating switch, and is used to respectively collect the voltage and current information of the drive component power supply circuit and the status information of the isolating switch, and send the collected information to the control unit through the terminal unit; the control unit is used to judge whether the status of the isolating switch meets the conditions for opening and closing the switch according to the received information, and display the judgment result through the display unit, so that the operator can perform the corresponding control operation through the input unit according to the content displayed on the display unit, and the input unit uploads the executed control operation signal to the control unit, and the control unit generates a control instruction according to the control operation, and sends it to the drive component through the terminal unit; the drive component drives the isolating switch to perform the corresponding opening and closing operation according to the control instruction.

[0009] Preferably, the terminal unit includes a power terminal, an input terminal and an output terminal, and the power terminal, the input terminal and the output terminal are all arranged on the back of the chassis, and the power terminal is used to connect to the power supply; the input terminal is electrically connected to the information acquisition module and the control unit, respectively, to receive the voltage and current information and status information sent by the information acquisition module, and send this information to the control unit; the output terminal is electrically connected to the control unit and the drive component, respectively, to receive the opening, closing or stop instructions issued by the control unit, and send the issued instructions to the drive component.

[0010] Preferably, the control unit is also used to determine the operating state of the drive component according to the received voltage and current information, and cut off the power supply of the drive component when the drive component operates abnormally.

[0011] Preferably, the display unit includes a closing permission light group, an opening permission light group, an operation signal light group and a display screen, and the closing permission light group, the opening permission light group, the operation signal light group and the display screen are all arranged on the front side of the chassis. The closing permission light group is used to display the judgment result of the closing condition; the opening permission light group is used to display the judgment result of the opening condition; the operation signal light group is used to display the current control status of the isolating switch monitoring and control device; and the display screen is used to display the current operating status of the isolating switch monitoring and control device.

[0012] Preferably, the input unit includes a closing button, an opening button, a stop button and a reset button, and the closing button, the opening button, the stop button and the reset button are arranged on the front of the chassis and are located below the display unit; the closing button is used to be triggered by an operator to generate a closing operation signal and send it to the control unit; the opening button is used to be triggered by an operator to generate an opening operation signal and send it to the control unit; the stop button is used to be triggered by an operator to generate a stop operation signal and send it to the control unit; the reset button is used to be triggered by an operator to generate a reset operation signal and send it to the control unit.

[0013] Preferably, the drive assembly includes three motors with the same structure, and the driving end of each motor is connected to a phase switch of the isolating switch, so that the rotation of the driving end of each motor drives the switch of each phase to open and close.

[0014] Preferably, the isolating switch monitoring and control device further comprises a mechanism box, and the monitoring and control module is arranged in the mechanism box.

[0015] The monitoring and control module also includes a temperature and humidity sensor and a heater. The temperature and humidity sensor is installed on the back of the chassis, and the heater is installed in the mechanism box. The temperature and humidity sensor and the heater are electrically connected to the control unit. The temperature and humidity sensor is used to collect temperature and humidity information around the chassis and transmit the information to the control unit. The control unit is used to control the heater to heat up the mechanism box when the temperature around the chassis is too low; the control unit is also used to control the heater to dehumidify the mechanism box when the humidity around the chassis is too high.

[0016] Preferably, the terminal unit also includes a communication terminal, which is connected to the control unit and the remote terminal respectively, and is used to realize remote communication with the remote terminal, so as to monitor and control the disconnector and the disconnector monitoring and control device through the remote terminal.

[0017] The above-mentioned isolating switch monitoring and control device is provided with a driving component, an information collection module and a monitoring control module. The monitoring control module includes a chassis, a terminal unit, a control unit, a display unit and an input unit. The terminal unit, the display unit and the input unit are all arranged on the chassis, and the control unit is arranged in the chassis. The control unit is electrically connected to the terminal unit, the display unit and the input unit. The terminal unit is electrically connected to the driving component and the information collection module respectively, and the driving component is connected to the isolating switch; the information collection module is electrically connected to the driving component and the isolating switch; in this way, the voltage and current information of the power supply circuit of the driving component and the status information of the isolating switch are respectively collected through the information collection module, and the collected information is sent to the terminal unit through the terminal unit. To the control unit, the control unit determines whether the state of the isolating switch meets the conditions for opening and closing according to the received information, and displays the judgment result through the display unit, so that the state information of the isolating switch is displayed on the display unit, so that when a fault occurs in the isolating switch, the fault location can be discovered and eliminated in time, thereby improving the efficiency of fault detection; and when the content displayed on the display unit meets the opening and closing conditions of the isolating switch, the operator performs the corresponding control operation through the input unit, and the input unit uploads the executed control operation signal to the control unit, and the control unit generates a control instruction according to the control operation, and sends it to the drive component through the terminal unit; the drive component drives the isolating switch to perform the corresponding opening and closing operations according to the control instruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the monitoring and control module of the present application.

[0019] Figure 2 It is a rear view of the monitoring and control module of the present application.

[0020] Figure 3 It is a connection block diagram between the modules of this application.

[0021] Figure 4 It is a connection block diagram between the modules and terminals of this application.

[0022] In the figure: a monitoring control module 10 , a chassis 20 , a terminal unit 30 , a power supply terminal 31 , an input terminal 32 , an output terminal 33 , a communication terminal 34 , and a temperature and humidity sensor 40 . DETAILED DESCRIPTION

[0023] The technical scheme 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.

[0024] Please refer to Figure 1 and Figure 4The utility model provides a monitoring and control device for an isolating switch, comprising a driving component, an information collection module and a monitoring and control module 10. The monitoring and control module 10 comprises a chassis 20, a terminal unit 30, a control unit, a display unit and an input unit. The terminal unit 30, the display unit and the input unit are all arranged on the chassis 20. The control unit is arranged in the chassis 20. The control unit is electrically connected to the terminal unit 30, the display unit and the input unit. The terminal unit 30 is electrically connected to the driving component and the information collection module respectively. The driving component is connected to the isolating switch.

[0025] The information acquisition module is electrically connected to the drive component and the isolating switch, and is used to respectively collect the voltage and current information of the power supply circuit of the drive component and the status information of the isolating switch, and send the collected information to the control unit through the terminal unit 30; the control unit is used to judge whether the status of the isolating switch meets the conditions for opening and closing the switch based on the received information, and display the judgment result through the display unit, so that the operator can perform the corresponding control operation through the input unit according to the content displayed by the display unit, and the input unit uploads the executed control operation signal to the control unit, and the control unit generates a control instruction according to the control operation, and sends it to the drive component through the terminal unit 30; the drive component drives the isolating switch to perform the corresponding opening and closing operations according to the control instruction; in this way, the operator can intuitively see the status information of the isolating switch through the display unit, so as to promptly find the fault location and eliminate it when the isolating switch fails, thereby improving the efficiency of troubleshooting.

[0026] Furthermore, the terminal unit 30 includes a power terminal 31, an input terminal 32 and an output terminal 33. The power terminal 31, the input terminal 32 and the output terminal 33 are all arranged on the back of the chassis 20. The power terminal 31 is used to connect to the power supply to supply power to the disconnector monitoring and control device; the input terminal 32 is electrically connected to the information acquisition module and the control unit respectively, and is used to receive the voltage and current information and status information sent by the information acquisition module, and send this information to the control unit; the output terminal 33 is electrically connected to the control unit and the drive component respectively, so as to receive the opening, closing or stopping instructions issued by the control unit, and send the issued instructions to the drive component.

[0027] In this embodiment, the control unit is also used to compare the voltage and current information with the preset voltage and preset current respectively based on the received voltage and current information, so as to determine the operating status of the drive component. When the voltage and current information conflicts with the preset voltage and preset current, it means that the drive component is operating abnormally. The control unit will send a stop command to the drive component through the opening terminal 33, thereby cutting off the power supply of the drive component. At the same time, the control unit displays the motor fault information through the display unit to remind the operator to inspect the drive component.

[0028] Furthermore, the display unit includes a closing permission light group, an opening permission light group, an operation signal light group and a display screen. The closing permission light group, the opening permission light group, the operation signal light group and the display screen are all arranged on the front side of the chassis 20. The closing permission light group is used to display the judgment result of the closing condition; the opening permission light group is used to display the judgment result of the opening condition; the operation signal light group is used to display the current control status of the disconnector monitoring and control device; the display screen is used to display the current operating status of the disconnector monitoring and control device.

[0029] Furthermore, the input unit includes a closing button, an opening button, a stop button and a reset button, which are arranged on the front of the chassis 20 and below the display unit; the closing button is used to be triggered by the operator to generate a closing operation signal, and send it to the control unit, so that the control unit sends an opening instruction to the drive component through the opening terminal 33; the opening button is used to be triggered by the operator to generate an opening operation signal, and send it to the control unit; the stop button is used to be triggered by the operator to generate a stop operation signal, and send it to the control unit, so that the control unit sends a stop instruction to the drive component through the opening terminal 33; the reset button is used to be triggered by the operator to generate a reset operation signal, and send it to the control unit, so that after the operator completes the inspection and maintenance, the control unit resets the judgment result displayed in the display unit.

[0030] Furthermore, the drive assembly includes three motors with the same structure, and the driving end of each motor is connected to a phase switch of the isolating switch, so that the rotation of the driving end of each motor drives the switches of each phase to be opened and closed, so that when a single phase of the isolating switch is opened and closed, only the motor of the corresponding single phase is controlled to perform opening and closing operations.

[0031] Furthermore, the isolating switch monitoring and control device also includes a mechanism box, and the monitoring control module is arranged in the mechanism box to isolate the monitoring control module from the outside world and protect the monitoring control module from corrosion by the external environment.

[0032] In this embodiment, the monitoring and control module 10 also includes a temperature and humidity sensor 40 and a heater. The temperature and humidity sensor 40 is installed on the back of the chassis 20, and the heater is installed in the mechanism box. The temperature and humidity sensor 40 and the heater are electrically connected to the control unit. The temperature and humidity sensor 40 is used to collect temperature and humidity information around the chassis 20 and transmit the information to the control unit. The control unit compares the received temperature information with the preset temperature information. When the temperature is lower than the preset temperature, the heater is turned on to heat the mechanism box; the control unit compares the received humidity information with the preset humidity information. When the humidity is higher than the preset humidity, the heater dehumidifies the mechanism box to ensure that the environment of the chassis 20 meets the operating requirements of the monitoring and control components.

[0033] In this embodiment, when the monitoring and control module 10 operates normally, overheating will not occur, so no corresponding cooling function is set. When the monitoring and control module 10 overheats, the power should be turned off in time for maintenance.

[0034] In this embodiment, the terminal unit 30 also includes a communication terminal 34, which is connected to the control unit and the remote terminal respectively, and is used to realize remote communication with the remote terminal, so as to monitor and control the isolating switch and the isolating switch monitoring and control device through the remote terminal, thereby remotely controlling the isolating switch to be opened and closed.

[0035] In this embodiment, the isolating switch monitoring and control device also has a single-phase control switching function. The display screen is electrically connected to the control unit so that by touching the corresponding setting button on the display screen, a control mode switching instruction is sent to the control unit, so that when the control unit sends the opening, closing and stop instructions, it only controls the corresponding single-phase motor to perform opening and closing operations.

[0036] In this embodiment, the closing permission light group includes a closing permission light, a closing limit light, a door-controlled switch light, an external locking light, an auxiliary switch closing position light, etc. and an auxiliary switch opening position light. The opening permission light group includes an opening permission light, a door-controlled switch light, an external locking light, an auxiliary switch closing position light, etc. and an auxiliary switch opening position light. Each light is green when the corresponding condition is met and green when it is not met, which is convenient for operators to carry out timely maintenance.

[0037] In this embodiment, the operation signal light group includes a remote control / local light, a phase A single control light, a phase B single control light, a phase C single control light, a three-phase linkage light and a dehumidification heating light. When the remote control / local light is green, it means that the isolating switch monitoring and control device is in a remote control state. When it is red, it means that the isolating switch monitoring and control device is in a local control state. When the isolating switch monitoring and control device controls phase A of the isolating switch alone, the phase A single control light is green, otherwise, the phase A single control light is off. When the isolating switch monitoring and control device is in a local control state, the isolating switch monitoring and control device controls phase A of the isolating switch alone. When the B phase of the isolating switch is controlled individually, the B phase single control light is green, otherwise, the B phase single control light is off; when the isolating switch monitoring and control device controls the C phase of the isolating switch individually, the C phase single control light is green, otherwise, the C phase single control light is off; when the isolating switch monitoring and control device controls the A phase, B phase and C phase of the isolating switch at the same time, the three-phase linkage light is green, otherwise, the three-phase linkage light is off; when the isolating switch monitoring and control device performs heating and dehumidification operation, the dehumidification heating light is green, otherwise, the dehumidification heating light is off.

[0038] In the present embodiment, the front of the chassis 20 is also provided with an operation light, an alarm light, a fault light, a three-phase opening permission light, a three-phase closing permission light and a knife isolation position light. When the isolating switch monitoring and control device is in operation, the operation light is green and flashes, otherwise it is off; when the isolating switch monitoring and control device has an abnormality, the alarm light is red, otherwise it is off; when the isolating switch monitoring and control device has a fault, the fault light is red, otherwise it is off; when the three-phase opening condition of the isolating switch monitoring and control device is met, the three-phase opening permission light is green, otherwise it is green; when the three-phase closing condition of the isolating switch monitoring and control device is met, the three-phase closing permission light is green, otherwise it is green; the knife isolation position light indicates the knife isolation position of this phase, green when the knife isolation is in the closed position, and red when the knife isolation is in the open position, otherwise the knife isolation position light is off.

[0039] The utility model is provided with an information acquisition module, a terminal unit 30, a control unit and a display unit. The information acquisition module acquires the status information of the isolating switch and sends it to the control unit through the terminal unit 30. The control unit determines whether the status of the isolating switch satisfies the conditions for opening and closing the switch according to the received information, and displays the judgment result through the display unit, thereby realizing the visualization of various conditions required for opening and closing the isolating switch, enabling the operator to grasp various status information of the isolating switch, and to eliminate the fault of the isolating switch in time, and the troubleshooting time is reduced to seconds, and the one-time operation success rate is increased from an average of 75% to 91%. It also realizes real-time diagnosis of the operating condition of the isolating switch, and increases the monitoring status quantity to 15 items.

[0040] The utility model also integrates the functions of measurement and control, protection, communication, temperature and humidity controller, etc., which solves the problem of large number of components in the traditional control method of the isolating switch, reduces the number of components by 70%, and reduces internal wiring by more than 50%.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disconnector monitoring and control device, characterized in that: It includes a driving component, an information collection module and a monitoring control module, wherein the monitoring control module includes a chassis, a terminal unit, a control unit, a display unit and an input unit, wherein the terminal unit, the display unit and the input unit are all arranged on the chassis, the control unit is arranged in the chassis, the control unit is electrically connected to the terminal unit, the display unit and the input unit, the terminal unit is electrically connected to the driving component and the information collection module respectively, and the driving component is connected to the isolating switch; The information acquisition module is electrically connected to the drive component and the isolating switch, and is used to respectively acquire voltage and current information of the power supply circuit of the drive component and status information of the isolating switch, and sends the acquired information to the control unit through the terminal unit; The control unit is used to judge whether the state of the disconnector meets the conditions of opening and closing according to the received information, and display the judgment result through the display unit, so that the operator can perform the corresponding control operation through the input unit according to the content displayed by the display unit, and the input unit uploads the executed control operation signal to the control unit, and the control unit generates a control instruction according to the control operation, and sends it to the drive component through the terminal unit; The driving component drives the isolating switch to perform corresponding opening and closing operations according to the control instruction.

2. The isolating switch monitoring and control device according to claim 1, characterized in that: The terminal unit includes a power terminal, an input terminal and an output terminal, and the power terminal, the input terminal and the output terminal are all arranged on the back of the chassis, and the power terminal is used to connect to the power supply; the input terminal is electrically connected to the information acquisition module and the control unit respectively, and is used to receive the voltage and current information and status information sent by the information acquisition module, and send this information to the control unit; the output terminal is electrically connected to the control unit and the drive component respectively, so as to receive the opening, closing or stop instructions issued by the control unit, and send the issued instructions to the drive component.

3. The isolating switch monitoring and control device according to claim 1, characterized in that: The control unit is also used to determine the operating state of the drive component according to the received voltage and current information, and cut off the power supply of the drive component when the drive component operates abnormally.

4. The isolating switch monitoring and control device according to claim 1, characterized in that: The display unit includes a closing permission light group, an opening permission light group, an operation signal light group and a display screen. The closing permission light group, the opening permission light group, the operation signal light group and the display screen are all arranged on the front side of the chassis. The closing permission light group is used to display the judgment result of the closing condition; the opening permission light group is used to display the judgment result of the opening condition; the operation signal light group is used to display the current control status of the disconnector monitoring and control device; the display screen is used to display the current operating status of the disconnector monitoring and control device.

5. The isolating switch monitoring and control device according to claim 1, characterized in that: The input unit includes a closing button, an opening button, a stop button and a reset button, which are arranged on the front of the chassis and below the display unit; the closing button is used to be triggered by an operator to generate a closing operation signal and send it to the control unit; The opening button is used to be triggered by an operator to generate an opening operation signal and send it to the control unit; the stop button is used to be triggered by an operator to generate a stop operation signal and send it to the control unit; the reset button is used to be triggered by an operator to generate a reset operation signal and send it to the control unit.

6. The isolating switch monitoring and control device according to claim 1, characterized in that: The driving assembly includes three motors with the same structure. The driving end of each motor is connected to a phase switch of the isolating switch, so that the rotation of the driving end of each motor drives the switch of each phase to open and close.

7. The isolating switch monitoring and control device according to claim 1, characterized in that: The isolating switch monitoring and control device further comprises a mechanism box, and the monitoring and control module is arranged in the mechanism box.

8. The isolating switch monitoring and control device according to claim 7, characterized in that: The monitoring and control module also includes a temperature and humidity sensor and a heater. The temperature and humidity sensor is installed on the back of the chassis, and the heater is installed in the mechanism box. The temperature and humidity sensor and the heater are electrically connected to the control unit. The temperature and humidity sensor is used to collect temperature and humidity information around the chassis and transmit the information to the control unit. The control unit is used to control the heater to heat up the mechanism box when the temperature around the chassis is too low; the control unit is also used to control the heater to dehumidify the mechanism box when the humidity around the chassis is too high.

9. The isolating switch monitoring and control device according to claim 1, characterized in that: The terminal unit also includes a communication terminal, which is connected to the control unit and the remote terminal respectively, and is used to realize remote communication with the remote terminal, so as to monitor and control the disconnector and the disconnector monitoring and control device through the remote terminal.

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