CN111817445B - Power cut and transmission control method and system - Google Patents

Power cut and transmission control method and system Download PDF

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Publication number
CN111817445B
CN111817445B CN202010949761.7A CN202010949761A CN111817445B CN 111817445 B CN111817445 B CN 111817445B CN 202010949761 A CN202010949761 A CN 202010949761A CN 111817445 B CN111817445 B CN 111817445B
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China
Prior art keywords
power
controller
isolating switch
control device
state
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CN202010949761.7A
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Chinese (zh)
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CN111817445A (en
Inventor
李太友
陈桂刚
赵岩
李大勤
宋晨
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Tianjin Zhongxin Zhiguan Information Technology Co ltd
Tianjin Meiteng Technology Co Ltd
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Tianjin Zhongxin Zhiguan Information Technology Co ltd
Tianjin Meiteng Technology Co Ltd
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Publication of CN111817445A publication Critical patent/CN111817445A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/18—Systems supporting electrical power generation, transmission or distribution using switches, relays or circuit breakers, e.g. intelligent electronic devices [IED]

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The application provides a power cut-off and power transmission control method and system, and belongs to the technical field of electric power safety protection. The method is applied to a power transmission and power transmission control system, the system comprises a power transmission and power transmission control device, a field device, a power distribution loop of the field device and a controller of the power distribution loop, the power transmission and power transmission control device comprises an isolating switch, and the isolating switch is respectively connected with the field device, the power distribution loop and the controller, and the method comprises the following steps: responding to the power failure operation, the power outage and transmission control device disconnects the isolating switch so as to disconnect the field equipment from the power distribution loop and enable the field equipment to be in a power outage state; responding to the first power transmission operation, closing an isolating switch by the power transmission stopping control device so as to communicate the field equipment with the power distribution loop; the controller sends a power-up command to the power distribution circuit to place the field device in a powered-on state. By means of the method and the device, the problem that an existing power cut-off and transmission scheme is low in maintenance efficiency can be solved.

Description

Power cut and transmission control method and system
Technical Field
The application relates to the technical field of electric power safety protection, in particular to a power cut and transmission control method and system.
Background
In modern industrial production, in order to perform centralized power supply control on a plurality of field devices arranged on a production field, a power distribution room can be arranged, and professional power distribution control personnel in the power distribution room control the power supply conditions of the field devices.
In the related art, if the field device needs to be overhauled, power cut and transmission operation needs to be performed. The specific process is as follows: before the maintenance, the maintenance personnel need to show a power failure notice book to the power distribution control personnel in the power distribution room, and the power distribution control personnel turn off the power supply of the target field equipment to be maintained and hang a power failure board to prompt that the equipment is being maintained. In the maintenance process, a power distribution controller needs to perform center guard in a power distribution room to avoid serious safety accidents caused by the fact that other people perform power-on operation on target field equipment. After the maintenance is finished, the maintenance personnel need to take off the power failure board in the power distribution room, and the power distribution control personnel perform power transmission operation again to recover the power supply of the target field equipment.
However, typically, the distribution room is located far from the production site. In order to overhaul equipment, overhaul personnel need to frequently go back and forth between overhaul equipment and a power distribution room so as to execute operations such as power failure, card hanging, card picking, power transmission and the like, and therefore overhaul efficiency is low.
Disclosure of Invention
An object of the embodiments of the present application is to provide a power outage and transmission control method and system, so as to solve the problem of low maintenance efficiency of the existing power outage and transmission scheme. The specific technical scheme is as follows:
in a first aspect, a method for controlling power outage and transmission is provided, where the method is applied to a power outage and transmission control system, the system includes a power outage and transmission control apparatus, a field device, a power distribution loop of the field device, and a controller of the power distribution loop, the power outage and transmission control apparatus includes a disconnecting switch, and the disconnecting switch is respectively connected to the field device, the power distribution loop, and the controller, and the method includes:
in response to a power outage operation, the power outage and transmission control device disconnects the isolating switch to disconnect the field device from the power distribution loop to enable the field device to be in a power outage state;
in response to a first power transmission operation, the power transmission stopping control device closes the isolating switch to communicate the field device with the power distribution loop; the controller sends a power-on command to the power distribution circuit to cause the field device to be in a powered-on state.
Optionally, the power cut and supply control device includes an electromagnetic lock component connected to the controller, and the electromagnetic lock component is capable of mechanically locking the disconnecting switch, and the method further includes:
in response to the permission release operation of power distribution control, the controller sends an unlocking instruction to the electromagnetic lock component, so that the electromagnetic lock component releases the locking of the isolating switch after receiving the unlocking instruction, and the operation permission of the isolating switch is released;
the controller sends a locking instruction to the electromagnetic lock component after detecting the switch state change of the isolating switch, so that the electromagnetic lock component locks the isolating switch after receiving the locking instruction, and the operation authority of the isolating switch is locked.
Optionally, the method further includes:
in response to a second power transmission operation, the controller detects a switch state of the disconnecting switch, wherein the switch state is an open state or a closed state;
and if the isolating switch is in the off state, the controller outputs preset warning information.
Optionally, the system further includes a first display component, the first display component being connected to the controller, and the method further includes:
the controller detects the switch state of the isolating switch and sends the switch state to the first display part;
the first display part displays the switch state.
Optionally, the method further includes:
the controller determines prompt information corresponding to the switch state of the isolating switch according to a pre-stored corresponding relation between the switch state and the prompt information, and sends the determined prompt information to the first display component;
the first display part displays the prompt information.
Optionally, the power distribution loop includes a contactor, the contactor is respectively connected to the isolation switch and the controller, and the controller sends a power-on command to the power distribution loop, so that the field device is in a power-on state, including:
the controller sends a power-on command to the contactor;
the contactor is used for connecting the power supply of the power distribution loop with the power supply of the power distribution loop under the condition that the contactor receives a power-on command and detects that the isolating switch is in a closed state;
the power distribution circuit provides electrical energy to the field device such that the field device is in a powered on state.
Optionally, the power cut and transmission control device further includes a warning light, and the method further includes:
and responding to the power failure operation, and controlling the warning lamp to emit warning light by the power failure and transmission control device.
Optionally, the power cut and transmission control device further includes a communication component, and the method further includes:
the power cut-off and transmission control device receives a control instruction sent by a user terminal through the communication part, and the control instruction is sent by a maintainer through the user terminal;
the power-on/power-off control device determines a control operation including a power-off operation or a first power-on operation based on the received control instruction.
Optionally, the power cut and transmission control device further includes a second display unit, and the method further includes:
the power cut-off control device acquires equipment information of field equipment to be overhauled;
and displaying the acquired equipment information in the second display component.
In a second aspect, a power outage control system is provided, which includes a power outage control apparatus, a field device, a power distribution loop of the field device, and a controller of the power distribution loop; wherein,
the power cut-off and power transmission control device comprises an isolating switch, and the isolating switch is respectively connected with the field device, the power distribution loop and the controller;
the power cut and transmission control device is used for responding to power failure operation and disconnecting the isolating switch so as to disconnect the field equipment from the power distribution loop and enable the field equipment to be in a power cut state;
the power-on/power-off control device is also used for responding to a first power-on operation and closing the isolating switch so as to communicate the field device with the power distribution loop;
the controller is configured to send a power-on command to the power distribution circuit, so that the field device is in a power-on state.
Optionally, the power cut and transmission control device further includes an electromagnetic lock component connected to the controller, and the electromagnetic lock component can mechanically lock the isolating switch; wherein,
the controller is used for responding to the authority release operation of power distribution control and sending an unlocking instruction to the electromagnetic lock component;
the electromagnetic lock component is used for unlocking the isolating switch after receiving the unlocking instruction so as to release the operation authority of the isolating switch;
the controller is further used for sending a locking instruction to the electromagnetic lock component after detecting the change of the switch state of the isolating switch;
and the electromagnetic lock component is used for locking the isolating switch after receiving the locking instruction so as to lock the operation authority of the isolating switch.
Optionally, the controller is further configured to detect a switch state of the isolating switch in response to a second power transmission operation, and output preset warning information when the isolating switch is in an off state, where the switch state is an off state or an on state.
Optionally, the system further comprises a first display component, and the first display component is connected with the controller; wherein,
the controller is further used for detecting the switch state of the isolating switch and sending the switch state to the first display component;
the first display part is used for displaying the received switch state.
Optionally, the controller is further configured to determine, according to a pre-stored correspondence between the switch state and the prompt information, prompt information corresponding to the switch state of the disconnecting switch, and send the determined prompt information to the first display component;
the first display component is also used for displaying the received prompt message.
Optionally, the power distribution circuit includes a contactor, and the contactor is connected to the isolation switch and the controller respectively; wherein,
the controller is used for sending a power-on command to the contactor;
the contactor is used for connecting the power supply of the power distribution loop with the power supply of the power distribution loop under the condition that a power-on command is received and the isolating switch is detected to be in a closed state;
the power distribution loop is configured to provide power to the field device such that the field device is in a powered state.
Optionally, the power on/off control device further includes a warning light; wherein,
the power cut and transmission control device is also used for responding to the power cut operation and controlling the warning lamp to emit warning light.
Optionally, the power cut and transmission control device further includes a communication component; wherein,
the communication component is used for receiving a control instruction sent by a user terminal, and the control instruction is sent by a maintainer through the user terminal;
the power transmission stopping and sending control device is further used for determining control operation based on the received control instruction, wherein the control operation comprises power failure operation or first power transmission operation.
Optionally, the power cut control apparatus further includes a second display unit, wherein,
the power cut-off and transmission control device is used for acquiring equipment information of the field equipment needing to be overhauled;
and the second display component is used for displaying the acquired equipment information.
The embodiment of the application has the following beneficial effects:
the embodiment of the application provides a power outage and transmission control method and a system, wherein the system comprises a power outage and transmission control device, field equipment, a power distribution loop of the field equipment and a controller of the power distribution loop, the power outage and transmission control device comprises an isolating switch, and the isolating switch is respectively connected with the field equipment, the power distribution loop and the controller.
In response to a power outage operation, the power outage control apparatus may open the isolation switch to disconnect the field device from the power distribution circuit to place the field device in a power outage state. In response to the first power transmission operation, the power outage and transmission control device can close the isolating switch to communicate the field device with the power distribution loop; the controller can then send a power-up command to the power distribution circuit to place the field device in a powered-on state.
Because the maintainer can realize power cut and transmission control through carrying out power cut operation, first power transmission operation to power cut and transmission control device, consequently, avoided the frequent field device of maintainer and the electricity distribution room to come and go, can improve maintenance efficiency.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1a is a schematic diagram of a power cut control system according to an embodiment of the present disclosure;
fig. 1b is a schematic diagram of another power cut control system provided in the embodiment of the present application;
FIG. 1c is a schematic diagram of an electromagnetic lock component according to an embodiment of the present application;
fig. 2 is a flowchart of a power outage control method according to an embodiment of the present disclosure;
fig. 3 is a flowchart of another power cut control method according to an embodiment of the present disclosure;
fig. 4 is a flowchart of another power cut control method according to the embodiment of the present application;
fig. 5a is a schematic diagram of a display interface provided in an embodiment of the present application;
fig. 5b is a schematic diagram of another display interface provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a power cut and transmission control method which can be applied to a power cut and transmission control system. As shown in fig. 1a, a schematic diagram of a power outage control system provided in the embodiment of the present application includes a power outage control apparatus 110, a field device 120, a power distribution loop 130 of the field device, and a controller 140 of the power distribution loop. The power outage and transmission control device 110 includes an isolation switch 111, and the isolation switch 111 is connected to the field device 120, the power distribution circuit 130, and the controller 140.
In the embodiment of the present application, the isolating switch 111 may be any device having a switch function, for example, the isolating switch 111 may be a button switch, a key switch, or the like. The field device 120 may be a production process device in a production site, for example, the field device 120 may be a machining tool, a welding bug, a high temperature furnace, and the like. The Controller 140 may be any device having a control function, and the Controller 140 may be a PLC (Programmable Logic Controller), a single chip microcomputer, or the like.
The field devices 120 can be located in a production site and the power distribution loop 130 and controller 140 can be located in a power distribution room. The power outage control apparatus 110 may be a component constituting the field device 120 or may be a stand-alone device, and the embodiment of the present application is not particularly limited. When the power cut control apparatus 110 is a stand-alone device, the power cut control apparatus 110 may be provided in a production site.
A power transmission stopping control method provided in an embodiment of the present application will be described in detail below with reference to specific embodiments, as shown in fig. 2, the specific steps are as follows:
step 201, responding to the power failure operation, the power outage and transmission control device disconnects the isolating switch.
In practice, in order to overhaul the field device, the maintainer can perform power failure operation on the power outage and transmission control device. In the embodiment of the application, the maintainer can execute the power failure operation on the power cut and transmission control device in multiple modes. In one possible implementation, the service person may perform a power outage operation by pulling the isolation switch to the off position. In another possible implementation manner, the power outage and transmission control device may include a communication component, and a service person may perform a power outage operation on the power outage and transmission control device through a user terminal, where a detailed description is provided later on in a specific processing procedure.
In response to the power outage operation, the power outage control device may turn off the disconnector. Because the field device is connected with the power distribution loop through the isolating switch, after the isolating switch is disconnected, the electrical connection between the field device and the power distribution loop can be cut off, and the field device can be in a power-off state. Furthermore, the controller connected to the disconnector will also detect that the disconnector is in an open state.
Step 202, responding to the first power transmission operation, closing the isolating switch by the power transmission stopping control device, and sending a power-on command to the power distribution loop by the controller.
In implementation, after the equipment maintenance is completed, a maintenance worker may perform a first power transmission operation on the power transmission stop control device. In the embodiment of the application, corresponding to the power failure operation, the maintainer can perform the first power transmission operation on the power transmission/reception control device in multiple modes. In one possible implementation, the service person may perform the first power delivery operation by pulling the disconnector to the closed position. In another possible implementation manner, the power on/off control device may include a communication component, and a service person may perform a first power transmission operation on the power on/off control device through the user terminal, where a detailed description is provided later.
In response to the first power transmitting operation, the power cut control device may close the disconnector. Because the field device is connected to the power distribution circuit through the isolation switch, the electrical connection between the field device and the power distribution circuit is reconnected when the isolation switch is closed.
Furthermore, when the isolation switch is closed, a controller connected to the isolation switch may detect that the isolation switch is in a closed state. The controller may then send a power-up command to the power distribution loop, which may then provide power to the field device to place the field device in a powered-on state.
In the embodiment of the application, the power outage operation of the maintainer is responded, and the power outage and transmission control device can disconnect the isolating switch so as to disconnect the field equipment from the power distribution loop and enable the field equipment to be in a power outage state. In response to a first power transmission operation of a service person, the power transmission stopping control device can close the isolating switch to communicate the field device with the power distribution loop; the controller can then send a power-up command to the power distribution circuit to place the field device in a powered-on state.
Because the maintainer can realize power cut and transmission control through carrying out power cut operation, first power transmission operation to power cut and transmission control device, consequently, avoided the frequent field device of maintainer and the electricity distribution room to come and go, can improve maintenance efficiency.
In this embodiment of the present application, one power outage and transmission control device may be used to perform power outage and transmission control on a plurality of field devices, or one power outage and transmission control device may be provided for each field device, and power outage and transmission control is performed on the corresponding field device through each power outage and transmission control device, which is not specifically limited in this embodiment of the present application.
Alternatively, the power cut control device may include an electromagnetic lock member connected to the controller, the electromagnetic lock member being capable of mechanically locking the disconnector. Based on the electromagnetic lock part can control isolator's operation authority, specific control process includes:
in response to the permission release operation of power distribution control, the controller sends an unlocking instruction to the electromagnetic lock component, so that the electromagnetic lock component releases the locking of the isolating switch after receiving the unlocking instruction, and the operation permission of the isolating switch is released. The controller sends a locking instruction to the electromagnetic lock component after detecting the change of the switch state of the isolating switch, so that the electromagnetic lock component locks the isolating switch after receiving the locking instruction, and the operation authority of the isolating switch is locked.
The permission release operation may be pressing a preset permission release button in the controller, or clicking a confirmation icon representing the permission of the release operation in a control panel of the controller.
In implementation, before the power outage operation or the first power transmission operation is performed on the power outage and transmission control device, the maintenance personnel can contact the power distribution control personnel to request to release the operation authority of the isolating switch. The power distribution control personnel can execute authority releasing operation on the controller.
In response to the authority release operation of the power distribution control, the controller may transmit an unlocking instruction to the electromagnetic lock section. The electromagnetic lock component can unlock the isolating switch after receiving the unlocking instruction so as to release the operation authority of the isolating switch.
For example, as shown in fig. 1c, a schematic diagram of an electromagnetic lock component provided in an embodiment of the present application is shown, where the electromagnetic lock component includes an electromagnetic lock bolt capable of moving up and down and an electromagnetic lock body, the disconnecting switch is connected to the handle through a connecting shaft, and the electromagnetic lock bolt is inserted into the connecting shaft. The maintainer can be in the disconnection state or the closure state through rotatory handle control isolator.
In response to the authority release operation of the power distribution control person, the controller may send an unlocking instruction to the electromagnetic lock component. The electromagnetic lock component can drive the electromagnetic lock bolt to move downwards after receiving an unlocking instruction, so that the movement interference on the connecting shaft is eliminated, a maintainer can operate the handle, the isolation switch is unlocked, and the operation permission of the isolation switch is released.
After the maintenance personnel perform the power failure operation or the first power transmission operation, the controller can detect the switch state change of the isolating switch. For example, after a service person performs a power failure operation, the switching state of the disconnector changes from the closed state to the open state. After the maintainer executes the first power transmission operation, the switch state of the isolating switch is changed from the open state to the closed state.
Upon detecting a change in the switch state of the isolator switch, the controller may send a lock command to the electromagnetic lock component. The electromagnetic lock component can lock the isolating switch after receiving the locking instruction so as to lock the operation authority of the isolating switch.
For example, also taking the electromagnetic lock component shown in fig. 1c as an example, the controller may send a lock command to the electromagnetic lock component after detecting a change in the switch state of the disconnector. The electromagnetic lock component can drive the electromagnetic lock bolt to move upwards after receiving a locking instruction, so that the electromagnetic lock bolt can interfere with the movement of the connecting shaft, a maintainer can not operate the handle, the isolating switch is locked, and the operation permission of the isolating switch is locked.
In the embodiment of the present application, the power cut and transmission control device may include an electromagnetic lock component connected to the controller and capable of mechanically locking the disconnector. The controller can respond to the permission release operation of power distribution control and send an unlocking instruction to the electromagnetic lock component, so that the electromagnetic lock component can unlock the isolating switch after receiving the unlocking instruction, and the operation permission of the isolating switch can be released. And after detecting the switch state change of the isolating switch, the controller sends a locking instruction to the electromagnetic lock component, so that the electromagnetic lock component locks the isolating switch after receiving the locking instruction, and the operation authority of the isolating switch is locked. Therefore, the operation authority of the isolating switch can be controlled, the isolating switch is prevented from being opened or closed by a maintainer at will, and the safety of equipment maintenance is improved.
Optionally, the controller may lock the operation authority of the disconnecting switch at various times, and in addition to detecting the change in the switch state of the disconnecting switch, the controller may also send a lock instruction to the electromagnetic lock component in response to the authority locking operation of the power distribution control, so as to lock the operation authority of the disconnecting switch. Corresponding to the authority releasing operation, the authority locking operation may be pressing an authority locking button preset in the controller, or the authority locking operation may be clicking a confirmation icon representing the authority of the locking operation in a control panel of the controller.
Optionally, the power cut and supply control device may further include a mechanical lock component, the mechanical lock component may mechanically lock the disconnecting switch, and the electromagnetic lock component may indirectly achieve mechanical locking or release of the disconnecting switch through the mechanical lock component. Specifically, the electromagnetic lock component may lock the mechanical lock component first, and then the mechanical lock component may lock the disconnector, thereby achieving indirect locking of the disconnector. Similarly, the electromagnetic lock member may first release the mechanical lock member, and then the mechanical lock member may release the disconnector, whereby an indirect release of the disconnector may be achieved.
The electromagnetic lock component may adopt any one of the mechanical structures in the related art to achieve mechanical locking of the disconnector, and the embodiment of the present application is not particularly limited.
Optionally, the controller may be used to warn the power transmission operation performed in the maintenance process, as shown in fig. 3, the specific processing procedure includes:
in step 301, in response to the second power transmission operation, the controller detects a switching state of the disconnecting switch.
Wherein the switch state is an open state or a closed state.
In practice, the distribution control personnel in the distribution room may perform the second power delivery operation in the event of a false touch, or other personnel not known to the equipment servicing event may perform the second power delivery operation in the distribution room. The second power transmission operation may be to click a preset power transmission button, or the second power transmission operation may be to pull the power switch to the power-on position.
In response to the second power transmitting operation, the controller may detect a switching state of the disconnector.
And step 302, if the isolating switch is in an off state, the controller outputs preset warning information.
In practice, if the isolator is in the off state, indicating that the field device is being serviced, the controller may output preset warning information. If the isolation switch is in the closed state, indicating that power has been supplied to the field device, the field device is in the operational state and the controller may output a prompt indicating that the field device is in operation.
Optionally, the controller may output the preset warning information in a plurality of manners, and in a feasible implementation manner, the power cut and transmission control system may include an audio playing component, and the controller may be connected to the audio playing component. If the isolating switch is in an off state, the controller can send an audio playing instruction to the audio playing part, so that the audio playing part plays audio containing preset warning information.
In another possible implementation, the power on/off control system may include a first display component, and the controller may be connected to the first display component. If the isolating switch is in an off state, the controller can display preset warning information through the first display part, and detailed description will be given later on a specific processing process.
The manner of outputting the prompt information by the controller is similar to the manner of outputting the preset warning information, and is not described herein again.
In the embodiment of the present application, in response to the second power transmitting operation, the controller may detect the switching state of the disconnecting switch. Under the condition that the isolating switch is in an off state, on one hand, the controller does not send a power-on instruction to the power distribution loop, so that safety accidents caused by power transmission for field equipment which is being overhauled can be avoided. On the other hand, the controller outputs preset warning information, can prompt the equipment maintenance condition and warn the power transmission operation executed in the maintenance process.
Among the correlation technique, in the overhaul of equipments in-process, if distribution control personnel maloperation in the distribution room leads to for field device power transmission, perhaps, other personnel that are unknown to the overhaul of equipments are for field device power transmission in the distribution room, can harm maintainer's safety, cause the incident. According to the power on/off control method provided by the embodiment of the application, power transmission for the field equipment in the maintenance state can be avoided, and the safety of equipment maintenance is improved.
Alternatively, in the case where a plurality of field devices need to be serviced, the controller may be connected to the power cut control apparatus of each field device, respectively. During the maintenance process, the controller can determine the field device which is completed with the maintenance by detecting the state change of the isolating switch in the stop and supply electric control device. Then, the controller can generate a maintenance schedule according to the field devices which are already repaired and the field devices which need to be repaired. Thereafter, the controller may display the repair progress in the first display part.
Optionally, the power on/off control system may further include a first display unit, the first display unit is connected to the controller, and the first display unit may be any device having a display function, for example, the first display unit may be a display screen or a touch screen. The controller may output the switching state of the disconnector through the first display part, as shown in fig. 4, and the processing includes:
step 401, the controller detects the switch state of the isolation switch and sends the switch state to the first display component.
In an implementation, the controller may detect a switching state of the disconnection switch, and then, the controller may transmit the detected switching state to the first display part.
Step 402, the first display component displays the switch state.
Fig. 5a is a schematic diagram of a display interface provided in an embodiment of the present application, where: the switch state of the isolating switch is as follows: open state ".
In this embodiment of the application, the controller can detect the on-off state of the isolator, and send the on-off state to the first display component, and then, the first display component can display the on-off state. Therefore, personnel in the power distribution room can know the current operation state of the field device according to the switch state of the isolating switch.
Optionally, in addition to the switch state, the first display unit may further display a prompt message, and the specific processing procedure includes:
step 1, the controller determines prompt information corresponding to the switch state according to the corresponding relationship between the switch state and the prompt information which is stored in advance.
In an implementation, the controller may store a correspondence between the switch state and the presentation information in advance. Specifically, when the switch state is the off state, it indicates that the field device is in the maintenance state, and the prompt information corresponding to the off state may be: the field device is under inspection; when the switch state is the closed state, it indicates that the field device is in the operating state, and the prompt information corresponding to the open state may be: the field device is operating.
After the switch state of the disconnecting switch is detected, the controller can determine the prompt information corresponding to the switch state according to the corresponding relation between the switch state and the prompt information.
And 2, sending the determined prompt information to the first display component.
And 3, displaying prompt information by the first display part.
Fig. 5b is a schematic diagram of another display interface provided in the embodiment of the present application, where not only the switch state "of the disconnecting switch is shown as follows: and the disconnection state 'also displays prompt information that the field equipment is in the maintenance state'.
In this embodiment of the application, the controller may determine the prompt information corresponding to the switch state according to a pre-stored correspondence between the switch state and the prompt information, and then send the determined prompt information to the first display component. Then, the first display part may display the prompt information. Therefore, the personnel in the power distribution room can conveniently know the maintenance condition of the field equipment in real time according to the prompt information displayed by the first display component.
Alternatively, the power distribution circuit may include a contactor, and the contactor may be any device having a power distribution circuit on-off control function, for example, the contactor may be an electric operating mechanism or a mechanical arm. The contactor is connected with the isolating switch and the controller.
The embodiment of the application uses the power distribution loop including the contactor as an example, when the isolation switch is closed, the controller sends the power-on command to the power distribution loop, and the process of power transmission for the field device is explained, including:
step one, the controller sends a power-on command to the contactor.
In an implementation, the controller may detect that the disconnector is in the closed state when the disconnector is closed, and then the controller may send a power-on command to the contactor.
And step two, the contactor switches on the power supply of the power distribution loop and the power supply of the power distribution loop under the condition that the contactor receives a power-on command and detects that the isolating switch is in a closed state.
In implementations, the contactor may detect the switch state of the isolation switch after receiving the power-on command. The contactor may connect the power distribution circuit and the power source of the power distribution circuit if the isolation switch is in the closed state.
In the embodiment of the application, if the contactor receives a power-on command but detects that the isolating switch is in an open state, or if the contactor detects that the isolating switch is in a closed state but does not receive the power-on command, the contactor does not switch on the power distribution loop and the power supply of the power distribution loop.
And step three, the power distribution loop provides electric energy for the field device.
In implementations, the power distribution circuit can provide power to the field device upon being powered on, such that the field device is in a powered on state.
In the embodiment of the application, because the contactor receives the power-on command and detects that the isolating switch is in the closed state, the power supply of the power distribution loop and the power distribution loop is switched on, and the power distribution loop can provide electric energy for the field device, so that the safety of equipment maintenance can be ensured.
Optionally, the power cut-off control device may further include a warning light, and the warning light may be any device having a light emitting function. In response to the power failure operation, the power on/off control device can control the warning lamp to emit warning light to prompt that equipment maintenance is being performed. The warning light may be a normally bright red light, a blinking red light, or an alternating red light and a blue light, which is not specifically limited in the embodiments of the present application.
In the embodiment of the application, because the power transmission stopping control device can send the mode of warning light through controlling the warning lamp in the maintenance process, the prompting field device is maintaining, therefore, non-maintenance related personnel can be prevented from being close to the field device, or the non-maintenance related personnel can execute power transmission operation on the power transmission stopping control device, so that safety accidents are caused, and the safety of equipment maintenance can be improved.
Optionally, the power on/off control device may include a communication component, where the communication component may be any device having a communication function, and the communication component may be connected to and communicate with the user terminal in a connection manner such as bluetooth and WiFi, and the embodiment of the present application is not particularly limited. The maintainer can carry out power failure operation or first power transmission operation to power transmission stop control device through user terminal, and specific processing procedure includes:
step 1, the power transmission stop control device receives a control instruction sent by a user terminal through a communication component.
Wherein the control instruction is sent by a maintainer through a user terminal.
In implementation, the service person may perform a preset operation on the user terminal so that the user terminal sends a control instruction indicating power outage to the power outage control device.
For example, an application program for performing power outage and transmission control may be installed in a user terminal of the service person, and when the equipment needs to be serviced, the service person may click a power outage button in a preset page in the application program. Then, the user terminal can generate a control command carrying the power failure identifier, and then send the control command to the power outage and transmission control device.
Similarly, when the equipment maintenance is completed, a maintenance worker can click a power transmission button in a preset page in the application program, and then the user terminal can generate a control command carrying a power transmission identifier and send the control command to the power transmission stopping control device.
And 2, determining the control operation executed by the maintainer by the power cut-off control device based on the received control instruction.
Wherein the control operation includes a power-off operation or a first power-feeding operation.
In implementation, the power outage and transmission control device may obtain an identifier carried by the control command, and if the identifier carried by the control command is the power outage identifier, the power outage and transmission control device may determine that the control operation performed by the service personnel is the power outage operation. If the identifier carried by the control command is a power transmission identifier, the power-on/power-off control device may determine that the control operation performed by the service person is the first power transmission operation.
In the embodiment of the application, the maintainer can send the control operation to the power on/off control device through the user terminal, so that the power on/off control device is not required to be arranged in a production field, the maintainer can conveniently execute the control operation on the power on/off control device, and the convenience of equipment maintenance is improved.
Optionally, the power outage and transmission control apparatus may further include a second display component, and the power outage and transmission control apparatus may display device information of the field device being overhauled based on the second display component, where the device information may be a device number, a device parameter when the device normally operates, and the device parameter may be a voltage, a current, and the like.
The process of the power cut control apparatus displaying the device information of the field device being serviced based on the second display part may include:
step 1, the power cut-off control device acquires equipment information of the field equipment needing to be overhauled.
In implementation, the power outage control apparatus may acquire device information of a field device requiring maintenance in various ways. In a feasible implementation manner, the power on/off control device may locally store device information of each field device in a production field, and the control instruction may carry a device identifier of the field device to be overhauled. Therefore, the power on/off control device can acquire the equipment identifier carried by the control command, and locally acquire the equipment information of the field equipment to be overhauled according to the equipment identifier.
In another possible implementation, the power outage control apparatus may receive device information of the field device to be serviced, which is sent by the user terminal.
And step 2, displaying the acquired equipment information in a second display component.
In the embodiment of the application, the power on/off control device can acquire the equipment information of the field equipment to be overhauled, and the acquired equipment information is displayed in the second display part, so that the overhaul personnel can know the equipment information of the field equipment to be overhauled conveniently, and overhaul is carried out according to the equipment information.
Optionally, an embodiment of the present application further provides an isolation switch, where the isolation switch may include two auxiliary switches, each auxiliary switch may be a contact of the isolation switch, and each auxiliary switch may also be a switch connected in parallel with the isolation switch. When the isolating switch is in an off state, the two auxiliary switches are also in the off state; when the disconnector is in the closed state, the two auxiliary switches are also in the closed state.
The embodiment of the present application, taking the case that the isolation switch includes two auxiliary switches, the power distribution circuit includes a contactor, and the controller is connected to the first display component, provides a schematic diagram of a power transmission control system, as shown in fig. 1b, wherein,
the isolation switch 111 includes two auxiliary switches, namely an auxiliary switch 111a and an auxiliary switch 111b, the power distribution circuit 130 is connected to the field device 120 through the isolation switch 111, and the isolation switch 111 is connected to the auxiliary switch 111a and the auxiliary switch 111b, respectively. The auxiliary switch 111a is connected with a contactor 131, and the contactor 131 is connected with the power distribution circuit 130; the auxiliary switch 111b is connected to the controller 140, and the controller 140 is connected to the contactor 131. The controller 140 may also be connected to a first display member 150.
In response to the power outage operation, the power outage control apparatus 110 cuts off the power connection between the field device 120 and the power distribution circuit 130 by opening the isolation switch 111, so that the field device 120 is in a power outage state.
The auxiliary switch 111a and the auxiliary switch 111b are also in an open state, and the contactor 131 connected to the auxiliary switch 111a can detect that the auxiliary switch 111a is in the open state, and the contactor 131 disconnects the power distribution loop 130 from the power distribution loop power source, such that the power distribution loop 130 cannot provide power to the field device 120. The controller 140 connected to the auxiliary switch 111b may detect that the auxiliary switch 111b is in the off state. Then, the controller 140 may transmit the detected switching state to the first display part 150. Thereafter, the first display part 150 may display that the disconnection switch is in an off state.
In response to the first power transmission operation, the power shutdown control apparatus 110 communicates the field device 120 with the power distribution circuit 130 by closing the isolation switch 111. The auxiliary switch 111a and the auxiliary switch 111b are also in a closed state, and the controller 140 connected to the auxiliary switch 111b may detect that the auxiliary switch 111b is in the closed state, and then, the controller 140 may transmit the detected switch state to the first display part 150. Thereafter, the first display part 150 may display that the disconnection switch is in a closed state.
The controller 140 may also send a power-on command to the contactor 131. The contactor 131 coupled to the auxiliary switch 111a may detect that the auxiliary switch 111a is in a closed state after receiving the power-on command, and the contactor 131 may then connect the power distribution circuit 130 to the power distribution circuit power source to enable the power distribution circuit 130 to provide power to the field device 120 to deliver power to the field device 120.
Based on the same technical concept, the embodiment of the application also provides a power transmission and stoppage control system, which comprises a power transmission and stoppage control device, field equipment, a power distribution loop of the field equipment and a controller of the power distribution loop; wherein,
the power cut-off and power transmission control device comprises an isolating switch, and the isolating switch is respectively connected with the field device, the power distribution loop and the controller;
the power cut and transmission control device is used for responding to power failure operation and disconnecting the isolating switch so as to disconnect the field equipment from the power distribution loop and enable the field equipment to be in a power cut state;
the power-on/power-off control device is also used for responding to a first power-on operation and closing the isolating switch so as to communicate the field device with the power distribution loop;
the controller is configured to send a power-on command to the power distribution circuit, so that the field device is in a power-on state.
Optionally, the power cut and transmission control device further includes an electromagnetic lock component connected to the controller, and the electromagnetic lock component can mechanically lock the isolating switch; wherein,
the controller is used for responding to the authority release operation of power distribution control and sending an unlocking instruction to the electromagnetic lock component;
the electromagnetic lock component is used for unlocking the isolating switch after receiving the unlocking instruction so as to release the operation authority of the isolating switch;
the controller is further used for sending a locking instruction to the electromagnetic lock component after detecting the change of the switch state of the isolating switch;
and the electromagnetic lock component is used for locking the isolating switch after receiving the locking instruction so as to lock the operation authority of the isolating switch.
Optionally, the controller is further configured to detect a switch state of the isolating switch in response to a second power transmission operation, and output preset warning information when the isolating switch is in an off state, where the switch state is an off state or an on state.
Optionally, the system further comprises a first display component, and the first display component is connected with the controller; wherein,
the controller is further used for detecting the switch state of the isolating switch and sending the switch state to the first display component;
the first display part is used for displaying the received switch state.
Optionally, the controller is further configured to determine, according to a pre-stored correspondence between the switch state and the prompt information, prompt information corresponding to the switch state of the disconnecting switch, and send the determined prompt information to the first display component;
the first display component is also used for displaying the received prompt message.
Optionally, the power distribution circuit includes a contactor, and the contactor is connected to the isolation switch and the controller respectively; wherein,
the controller is used for sending a power-on command to the contactor;
the contactor is used for connecting the power supply of the power distribution loop with the power supply of the power distribution loop under the condition that a power-on command is received and the isolating switch is detected to be in a closed state;
the power distribution loop is configured to provide power to the field device such that the field device is in a powered state.
Optionally, the power on/off control device further includes a warning light; wherein,
the power cut and transmission control device is also used for responding to power failure operation and controlling the warning lamp to emit warning light.
Optionally, the power cut and transmission control device further includes a communication component; wherein,
the communication component is used for receiving a control instruction sent by a user terminal, and the control instruction is sent by a maintainer through the user terminal;
the power transmission stopping and sending control device is further used for determining control operation based on the received control instruction, wherein the control operation comprises power failure operation or first power transmission operation.
Optionally, the power cut control apparatus further includes a second display unit, wherein,
the power cut-off and transmission control device is used for acquiring equipment information of the field equipment needing to be overhauled;
and the second display component is used for displaying the acquired equipment information.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A power outage and transmission control method is applied to a power outage and transmission control system, the system comprises a power outage and transmission control device, a field device, a power distribution loop of the field device and a controller of the power distribution loop, the power outage and transmission control device comprises an isolating switch, the isolating switch is respectively connected with the field device, the power distribution loop and the controller, the power outage and transmission control device is arranged in a production field, or when the power outage and transmission control device is not located in the production field, the power outage and transmission control device is remotely controlled and operated by a terminal, and the method comprises the following steps:
in response to a power outage operation, the power outage and transmission control device disconnects the isolating switch to disconnect the field device from the power distribution loop to enable the field device to be in a power outage state;
in response to a first power transmission operation, the power transmission stopping control device closes the isolating switch to communicate the field device with the power distribution loop; the controller sends a power-on command to the power distribution circuit, so that the field device is in a power-on state;
the power cut and transmission control device comprises an electromagnetic lock component connected with the controller, wherein the electromagnetic lock component can mechanically lock the isolating switch, and the method further comprises the following steps:
in response to the permission release operation of power distribution control, the controller sends an unlocking instruction to the electromagnetic lock component, so that the electromagnetic lock component releases the locking of the isolating switch after receiving the unlocking instruction, and the operation permission of the isolating switch is released;
the controller sends a locking instruction to the electromagnetic lock component after detecting the change of the switch state of the isolating switch, so that the electromagnetic lock component locks the isolating switch after receiving the locking instruction, and the operation authority of the isolating switch is locked;
wherein, the distribution circuit includes the contactor, the contactor respectively with isolator, the controller is connected, the controller to the distribution circuit sends power-on command, makes field device is in the circular telegram state, includes:
the controller sends a power-on command to the contactor;
the contactor is used for connecting the power supply of the power distribution loop with the power supply of the power distribution loop under the condition that the contactor receives a power-on command and detects that the isolating switch is in a closed state;
the power distribution circuit provides electrical energy to the field device such that the field device is in a powered on state.
2. The method of claim 1, further comprising:
in response to a second power transmission operation, the controller detects a switch state of the disconnecting switch, wherein the switch state is an open state or a closed state;
and if the isolating switch is in the off state, the controller outputs preset warning information.
3. The method of claim 1, wherein the system further comprises a first display component, the first display component being connected to the controller, the method further comprising:
the controller detects the switch state of the isolating switch and sends the switch state to the first display part;
the first display part displays the switch state.
4. The method of claim 3, further comprising:
the controller determines prompt information corresponding to the switch state of the isolating switch according to a pre-stored corresponding relation between the switch state and the prompt information, and sends the determined prompt information to the first display component;
the first display part displays the prompt information.
5. The method of claim 1, wherein the power shutdown control device further comprises a warning light, the method further comprising:
and responding to the power failure operation, and controlling the warning lamp to emit warning light by the power failure and transmission control device.
6. The method of claim 1, wherein the power shutdown control device further comprises a communication component, the method further comprising:
the power cut-off and transmission control device receives a control instruction sent by a user terminal through the communication part, and the control instruction is sent by a maintainer through the user terminal;
the power-on/power-off control device determines a control operation including a power-off operation or a first power-on operation based on the received control instruction.
7. The method according to claim 1, wherein the power cut control device further includes a second display section, the method further comprising:
the power cut-off control device acquires equipment information of field equipment to be overhauled;
and displaying the acquired equipment information in the second display component.
8. A power outage and transmission control system is characterized by comprising a power outage and transmission control device, a field device, a power distribution loop of the field device and a controller of the power distribution loop; wherein,
the power cut-off and transmission control device comprises an isolating switch, the isolating switch is respectively connected with the field equipment, the power distribution loop and the controller, the power cut-off and transmission control device is arranged in a production field, or when the power cut-off and transmission control device is not positioned in the production field, the power cut-off and transmission control device is remotely controlled and operated by a terminal;
the power cut and transmission control device is used for responding to power failure operation and disconnecting the isolating switch so as to disconnect the field equipment from the power distribution loop and enable the field equipment to be in a power cut state;
the power-on/power-off control device is also used for responding to a first power-on operation and closing the isolating switch so as to communicate the field device with the power distribution loop;
the controller is used for sending a power-on command to the power distribution loop so that the field device is in a power-on state;
the power cut-off and power transmission control device further comprises an electromagnetic lock component connected with the controller, and the electromagnetic lock component can mechanically lock the isolating switch; wherein,
the controller is used for responding to the authority release operation of power distribution control and sending an unlocking instruction to the electromagnetic lock component;
the electromagnetic lock component is used for unlocking the isolating switch after receiving the unlocking instruction so as to release the operation authority of the isolating switch;
the controller is further used for sending a locking instruction to the electromagnetic lock component after detecting the change of the switch state of the isolating switch;
the electromagnetic lock component is used for locking the isolating switch after receiving the locking instruction so as to lock the operation authority of the isolating switch;
the power distribution circuit comprises a contactor, and the contactor is respectively connected with the isolating switch and the controller; wherein,
the controller is used for sending a power-on command to the contactor;
the contactor is used for connecting the power supply of the power distribution loop with the power supply of the power distribution loop under the condition that a power-on command is received and the isolating switch is detected to be in a closed state;
the power distribution loop is configured to provide power to the field device such that the field device is in a powered state.
CN202010949761.7A 2020-09-10 2020-09-10 Power cut and transmission control method and system Active CN111817445B (en)

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