CN212909115U - Double-emergency control system for switch cabinet of unattended substation - Google Patents

Abstract

A switch cabinet dual emergency control system of an unattended substation is provided with a mechanical switching-on and switching-off mechanism and a control subsystem, wherein an independent power supply screen is installed in a remote controlled station of the substation; 2 communication channels are configured between the controlled station and the remote control station, the control subsystem comprises a server, a driving unit, a mechanical opening and closing mechanism control module, a switch, a sub-switch cabinet motor and a tripping magnetic valve control loop, and the server realizes information interaction with the control station through the 2 communication channels through the switch; the power supply screen, the driving unit, the sub-switch cabinet motor, the control loop of the tripping magnetic valve, the switch cabinet control motor, the signal input end of the contactor, the control module of the mechanical opening and closing mechanism and the mechanical opening and closing mechanism are electrically connected. This novel dual means of controlling that is provided with, first heavy control circuit is simple, reliable, and the second is heavy does not rely on any return circuit, can ensure that the action of operation obtains carrying out. The novel safe power supply of the electrified railway is effectively ensured.

Description

Double-emergency control system for switch cabinet of unattended substation

Technical Field

The utility model relates to an electric railway pulls power supply corollary equipment technical field, especially a cubical switchboard dual emergency control system of unmanned on duty electric substation.

Background

The electrified railway traction substation is an important node for electrified railway operation, and in recent years, with the development of railways in China, the running density of the electrified railway is increased, and the condition that the power supply of the electrified railway traction substation is interrupted due to the reasons of substation automatic system abnormity, equipment failure and the like caused by lightning stroke and the like sometimes occurs. Because the power failure can influence the transportation order, the social influence is large, and under the unattended condition, how to recover the power supply quickly is very significant. In the prior art, the power supply control of the traction substation of the electrified railway is generally manual on-site control, so that when power failure occurs, if an attendant is not on site for various reasons or does not know the power failure condition in time, the power supply cannot be recovered in time, and the influence on the safe operation of the electrified railway is brought.

Although in the prior art, power supply data of a field electrified railway traction substation is transmitted to a remote control station through a railway special communication channel, the control station controls a power switch mechanism of a field switch cabinet of the electrified railway traction substation to act after receiving field power failure data, and then closing or opening is completed. However, since the dedicated channel is only one channel and data is transmitted in a wired manner, when a field power failure occurs, a power supply supplying power to the channel is powered off, or the channel transmits abnormal data due to abnormal operation of equipment, the remote control station cannot normally receive and transmit control data, and cannot complete actions such as closing or opening, and the like, thereby restricting the safe operation of the electrified railway. And the switch cabinet is only provided with one set of switching-on and switching-off equipment, and the power supply depends on the power supply in the substation, so that the switching-on and switching-off action of a circuit breaker (power switch mechanism) of the switch cabinet cannot be controlled at a far end after the power supply in the substation is cut off or abnormal.

Disclosure of Invention

In order to overcome the defect that the adopted control equipment can not effectively ensure the switching-on and switching-off operation of the switching-off and switching-on power switch of the switch cabinet of the on-site substation after the power supply equipment in the existing electrified railway traction substation is powered off, the utility model provides a switching-off and switching-on control system which combines the existing switch cabinet of the substation, is provided with an independent power supply subsystem, a control subsystem and a double-channel data transmission channel and can effectively ensure the transmission of on-site power supply data and remote control data, and can effectively switch on or off the switch cabinet switch-on/off switch through the control subsystem when the power is cut off on site, and can also operate the opening and closing switch action of the switch cabinet body through the mechanical opening and closing mechanism under the condition of the failure of the switch cabinet motor and the like, therefore, the switch cabinet dual emergency control system of the unattended substation achieves multiple insurance effects and effectively ensures that the electrified railway traction substation safely supplies power to the electrified railway.

The utility model provides a technical scheme that its technical problem adopted is:

a switch cabinet dual emergency control system of an unattended substation comprises an original opening and closing control system in an electrified railway traction substation, and is characterized by further comprising a mechanical opening and closing mechanism and a control subsystem, wherein an independent power supply screen is installed in a remote controlled station of the substation, and surge-proof electrical equipment is installed at a wire inlet and outlet end of the power supply screen; 2 communication channels are configured between the controlled station and the remote control station, one main channel adopts the existing communication network of the railway, and the other standby channel; the control subsystem comprises a server, a driving unit, a mechanical opening and closing mechanism control module, a switch, a sub-switch cabinet motor and a tripping magnetic valve control loop; the power supply input end of the power supply screen is electrically connected with an alternating current power supply in the substation, the power supply output end of the power supply screen is electrically connected with the power supply input end of the control subsystem, and the server is in information interaction with the control station through 2 communication channels through the switch; the signal output end of the driving unit is electrically connected with the signal input ends of the sub-switch cabinet motor and the tripping magnetic valve control loop, and the signal output ends of the sub-switch cabinet motor and the tripping magnetic valve control loop are respectively electrically connected with the signal input ends of the switch cabinet control motor and the contactor; and the signal output end of the mechanical opening and closing mechanism control module is electrically connected with the signal input end of the mechanical opening and closing mechanism.

Furthermore, the pair of normally closed control nodes of the sub-switch cabinet motor and the tripping magnetic valve control loop are electrically connected in series between the circuit breaker motor and the tripping magnetic valve control loop of the switch cabinet and the signal input ends of the switch cabinet motor and the contactor.

Furthermore, the mechanical switching-on and switching-off mechanism comprises a guide rail, a translation box body, a vertical movement box body, a double-vision camera, a double-joint movable arm, an electric rocker, a controller and a laser radar positioning module, wherein the guide rail is horizontally arranged at the front upper part of the switch cabinet, the translation box body is arranged on the guide rail and can horizontally move back and forth along the guide rail, a support column is arranged at the lower end of the translation box body, the vertical movement box body is arranged at the front part of the support column and can vertically move and rotate along the support column, the double-vision camera, the double-joint movable arm and the laser radar positioning module are arranged in front of the vertical movement box body, the electric rocker is arranged at the front end of the double-joint movable arm, the controller is arranged in the translation box body, the double-vision camera inputs two-dimensional code information at the front end of the switch cabinet, the laser radar positioning module inputs and, the power input ends of the controller, the translation box body, the vertical movement box body, the double-joint movable arm and the electric rocker are respectively electrically connected, and the signal output end of the double-vision camera and the signal input end of the laser radar positioning module are connected with the signal input end of the controller.

Furthermore, the power input end of the mechanical switching-on/off mechanism is powered by the power supply screen, and the mechanical switching-on/off mechanism can also be installed on the moving trolley and powered by an independent power supply.

The utility model has the advantages that: this novel adopt solitary power screen power supply, do not rely on existing monitored control system's in the electric substation power and communication channel yet, also do not rely on existing monitored control system's control cable, and existing monitored control system mutually independent, can not reach when suffering destruction moreover the utility model discloses a machinery divide-shut brake mechanism, control subsystem. This novel dual means of controlling that is provided with, first heavy control circuit, branch cubical switchboard motor and dropout solenoid valve control circuit can realize quick circuit breaker switching operation to the cubical switchboard, and the return circuit of design is simple, reliable. The second mechanical opening and closing mechanism controls the switching operation of the breaker of the switch cabinet without depending on any loop, so that the operation behavior can be ensured to be executed. The novel double-channel communication system has the advantages that the first main channel guarantees real-time performance of communication data with the help of a communication network of an existing railway communication system, the second standby channel runs a wireless communication mode, and only the first main channel is started when the first main channel cannot work normally, and accordingly communication safety is guaranteed. This is novel has effectively guaranteed that electrified railway pulls transformer substation is electrified railway safety power supply, based on the aforesaid, this is novel to have good application prospect.

Drawings

The invention will be further explained with reference to the drawings and examples.

Fig. 1 is a block diagram of the architecture of the present invention.

Fig. 2 is the structure schematic diagram of the mechanical opening and closing mechanism of the present invention.

Detailed Description

As shown in fig. 1, a switch cabinet dual emergency control system of an unattended substation includes an original switching-closing control system (a power output end of the control system and a signal input end of a switch cabinet control motor and a contactor are respectively connected by a wire) in an electrified railway traction substation, and further includes a mechanical switching-closing mechanism and a control subsystem, an independent power screen is installed in a remote controlled station of the substation, and surge-proof electrical equipment (which protects the power screen) is installed at an incoming and outgoing end of the power screen, 2 communication channels are configured between the controlled station and the remote control station, one main channel adopts an existing communication network of a railway, and the other standby channel; the control subsystem comprises a server, a driving unit, a mechanical opening and closing mechanism control module, a switch, a sub-switch cabinet motor and a tripping magnetic valve control loop; the power supply input end of the power supply screen is connected with an alternating current power supply in a substation through a wire, the power supply output end of the power supply screen is connected with the power supply input end of the control subsystem through a wire, and the server is connected with the control station through the switch through 2 communication channels; the signal output end of the driving unit is connected with the signal input end of the branch switch cabinet motor and the signal input end of the tripping magnetic valve control loop through a lead, and the signal output end of the branch switch cabinet motor and the tripping magnetic valve control loop is connected with the signal input end of the switch cabinet control motor and the contactor through leads respectively; and the signal output end of the mechanical opening and closing mechanism control module is connected with the signal input end of the mechanical opening and closing mechanism through a wire.

As shown in fig. 1 and 2, a pair of normally closed control nodes of the sub-switch cabinet motor and the tripping magnetic valve control loop are connected in series between the circuit breaker motor and the tripping magnetic valve control loop of the switch cabinet and the signal input end of the switch cabinet motor and the contactor through wires. The control station is provided with a program control card, and the control tasks serialized in a plurality of controlled stations (substations) are completed by selecting the program control card. The mechanical switching-on and switching-off mechanism comprises a guide rail 1, a translation box body 2, a vertical moving box body 3, a double-vision camera 4, a double-joint movable arm 5, an electric rocker 6, a controller 7 and a laser radar positioning module 8, wherein the guide rail 1 is horizontally arranged at the front upper part of the switch cabinet, the translation box body 2 is arranged on the guide rail and can horizontally move back and forth along the guide rail 1, apillar 10 is arranged at the lower end of the translation box body 2, the vertical moving box body 3 is arranged at the front part of thepillar 10 and can vertically move and rotate along thepillar 10, the double-vision camera 4, the double-joint movable arm 5 and the laser radar positioning module 8 are arranged in front of the vertical moving box body 3, the electric rocker 6 is arranged at the front end of the double-joint movable arm 5, the controller 7 is arranged in the translation box body 2, the double-vision camera inputs two-dimensional code information at the front, the controller 7 can realize laser radar location and two-dimensional code locate function, and the power input end of controller 7 and translation box 2, vertical movement box 3, double-joint movable arm 5, electric power rocker 6 is connected through the wire respectively, and double vision camera 4, the 8 signal output part of laser radar orientation module and the 7 signal input part of controller are connected through the wire respectively. The power input end of the mechanical opening and closing mechanism is powered by the power supply screen, and the mechanical opening and closing mechanism can also be installed on the moving trolley and powered by an independent power supply.

As shown in fig. 1 and 2, the utility model is mainly applied to the deployment and implementation of the controlled station during installation. The implementation of the controlled station is divided into the installation of a power supply screen, the installation of a mechanical switching-on and switching-off mechanism, secondary wiring and the debugging of all systems in the controlled station. The preset position of the mechanical switching-on and switching-off mechanism is configured in a controller of the mechanical switching-on and switching-off mechanism during debugging, and the configured point position and description are input into a control subsystem in the mechanical switching-on and switching-off mechanism. The controlled station server executes the command of the control station, if the mechanical switching-on/off mechanism is required to participate, the mechanical switching-on/off mechanism is controlled to a specific preset point position through the controller of the mechanical switching-on/off mechanism and the mechanical switching-on/off mechanism control module, corresponding operation is executed, after the operation is successful, all data are input into the controller and the mechanical switching-on/off mechanism control module, and then automatic control can be completed.

Fig. 1 and 2 show that a driving unit can drive eight supporting branch switch cabinets motors of switch cabinets and the control circuit of tripping magnetic valve at most, namely the action of opening and closing the circuit breakers of 8 switch cabinets in the controllable controlled station (and the quantity of the driving unit can be increased). The utility model discloses in, the power supply screen charges through the power in the electric substation at ordinary times, and the electric substation takes place the tripping operation because of various reasons and has a power failure after, can be automatically independently for the power input end power supply of control subsystem and mechanical divide-shut brake mechanism, has guaranteed that the two can normally work after the electric substation has a power failure (the power supply screen electric energy can accomplish at least twice switching operation and the long requirement of the standby more than 2 hours). The utility model discloses main channel is substation railway private network, controls between station and the server, and the design has the heartbeat message of application layer, and among the practical application, judge when the heartbeat message is unusual to be the communication connection interrupt, think main channel to have unusually. When the communication connection between the control station and the server is interrupted, the control subsystem automatically switches channels, the controlled station and the control station are changed into standby channels to be connected with the remote cloud server, and information interaction is achieved. The control station encrypts the command content and forwards the encrypted command content to the cloud server, and the cloud server forwards the encrypted command content to the server in the substation. And the server in the substation decrypts the command content, executes the command when the received content is judged to be legal, and returns the execution process data, the execution result and the like to the remote control station through the cloud server. In specific application, wireless communication data comprise unique numbers of an operation station and a controlled station, contents and check codes, and the data are transmitted by ciphertext after being symmetrically encrypted; after both the controlled station and the control station receive the data, the controlled station and the control station decrypt and judge the check code and the station number, the data check is executed only if the data check is correct, and the wireless communication data key is manually replaced after being used for a plurality of times so as to ensure the safety of communication. When tripping occurs in a switch cabinet of a substation due to lightning stroke, abnormal channel, abnormal comprehensive self-healing and other reasons, a remote control station can remotely send out a control command after receiving information, and then a signal output end of a driving unit outputs a command signal to a motor of a switch cabinet and a control loop of a tripping magnetic valve, and a signal output end of the motor of the switch cabinet and the control loop of the tripping magnetic valve outputs a control signal to enter a signal input end of a control motor and a signal input end of a contactor of the switch cabinet, so that a breaker of the switch cabinet generates switching-on or switching-off actions (for example, when a large fault occurs, the control station has the requirement of remotely controlling the breaker to.

Fig. 1 and 2 show, the utility model discloses after the trouble such as emergence cubical switchboard motor, contactor (cubical switchboard self can't be at divide-shut brake), the station of controlling can realize the circuit breaker divide-shut brake operation of cubical switchboard through the work of mechanical divide-shut brake mechanism control module control machinery divide-shut brake mechanism. When the mechanical switching-on and switching-off mechanism works, the controller 7 controls the translation box body 2 to horizontally move back and forth along the guide rail 1, and the vertical movement box body 3 vertically moves and rotates along thesupport column 10, so that the double-vision camera 4 and the laser radar positioning module 8 are close to the front of a circuit breaker operation hole in front of the switch cabinet. Double vision camera 4 inputs cubical switchboard front end two-dimensional code information, and behind laser radar orientation module 8 input and cubical switchboard front end position information to controller 7, laser radar location and two-dimensional code locate function can be realized to controller 7, and then control electric power rocker 6 inserts in the circuit breaker handle hole, controller 7 fine adjustment translation box 2, erect and move 3 positions of box for electric power rocker front end accurate positioning is to the handle hole and insert. The controller 7 controls the electric rocker to rotate the rocker clockwise or anticlockwise according to a set program, and when the specified number of turns and torque are reached, the opening and closing operation of the switch of the circuit breaker is completed.

Fig. 1 and 2 show, the utility model discloses an independent power supply screen power supply does not rely on existing monitored control system's in the electric substation power and communication channel, does not also rely on existing monitored control system's control cable, and with existing monitored control system mutual independence, can not reach when existing monitored control system suffers destruction moreover the utility model discloses a machinery divide-shut brake mechanism, control subsystem. The utility model discloses be provided with dual means of controlling, first heavy control circuit divides cubical switchboard motor and dropout solenoid valve control circuit can realize quick circuit breaker switching operation to the cubical switchboard, and the return circuit of design is simple, reliable. The second mechanical opening and closing mechanism controls the switching operation of the breaker of the switch cabinet without depending on any loop, so that the operation behavior can be ensured to be executed. The utility model discloses have dual communication channel, first main use passageway guarantees the real-time of communication data with the help of existing railway communication system's communication network, and wireless communication's mode is walked to second spare channel, only uses the unable normal during operation of passageway to launch at first main use, and spare wireless channel uses the security that private symmetry encryption technique guaranteed communication. The utility model discloses effectively guaranteed that electric railway pulls the substation for the safe power supply of electric railway.

The basic principles and essential features of the invention and the advantages of the invention have been shown and described above, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but rather can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims (5)

1. A switch cabinet dual emergency control system of an unattended substation comprises an original opening and closing control system in an electrified railway traction substation, and is characterized by further comprising a mechanical opening and closing mechanism and a control subsystem, wherein an independent power supply screen is installed in a remote controlled station of the substation, and surge-proof electrical equipment is installed at a wire inlet and outlet end of the power supply screen; 2 communication channels are configured between the controlled station and the remote control station, one main channel adopts the existing communication network of the railway, the other standby channel forwards the communication between the controlled station and the control station equipment through the cloud server, the communication encryption algorithm uses a private symmetric encryption algorithm, and each controlled station is configured with an independent secret key; the control subsystem comprises a server, a driving unit, a mechanical opening and closing mechanism control module, a switch, a sub-switch cabinet motor and a tripping magnetic valve control loop; the power supply input end of the power supply screen is electrically connected with an alternating current power supply in the substation, the power supply output end of the power supply screen is electrically connected with the power supply input end of the control subsystem, and the server is in information interaction with the control station through 2 communication channels through the switch; the signal output end of the driving unit is electrically connected with the signal input ends of the sub-switch cabinet motor and the tripping magnetic valve control loop, and the signal output ends of the sub-switch cabinet motor and the tripping magnetic valve control loop are respectively electrically connected with the signal input ends of the switch cabinet control motor and the contactor; and the signal output end of the mechanical opening and closing mechanism control module is electrically connected with the signal input end of the mechanical opening and closing mechanism.

2. The dual emergency operation and control system for the switch cabinet of the unattended substation according to claim 1, wherein the pair of normally closed control nodes of the sub-switch cabinet motor and the trip magnet valve control loop are electrically connected in series between the circuit breaker motor and the trip magnet valve control loop of the switch cabinet and the signal input terminals of the switch cabinet motor and the contactor.

3. The system of claim 1, wherein the control station is configured with a programmable control card, and a plurality of control tasks serialized in the controlled station are performed by selecting the programmable control card.

4. The system of claim 1, wherein the mechanical switching mechanism comprises a rail, a translational box, a vertical box, a dual-view camera, a dual-joint movable arm, an electric rocker, a controller, and a lidar positioning module, wherein the rail is horizontally mounted on the upper front portion of the switch cabinet, the translational box is mounted on the rail and can horizontally move back and forth along the rail, a support is mounted at the lower end of the translational box, the vertical box is mounted on the front portion of the support and can vertically move and rotate along the support, the dual-view camera, the dual-joint movable arm, the lidar positioning module are mounted on the front portion of the vertical box, the electric rocker is mounted on the front end of the dual-joint movable arm, the controller is mounted in the translational box, the dual-view camera inputs two-dimensional code information at the front end of the switch cabinet, the lidar positioning module inputs and the position information at the front end of the switch cabinet to the rear portion of the controller, the controller can realize laser radar location and two-dimensional code locate function, and the power input end of controller and translation box, the vertical box that moves, two joint movable arm, electric power rocker is electric connection respectively, and double vision camera, laser radar orientation module signal output part and controller signal input part are connected.

5. The switch cabinet dual emergency control system of the unattended substation according to claim 1, wherein the power input end of the mechanical switching-on/off mechanism is powered by a power supply screen and can be mounted on a mobile trolley and powered by an independent power supply.

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