CN106549500A - A kind of device of transformer station's telecontrol communication machine Two-channel switching and its method for automatic switchover - Google Patents
A kind of device of transformer station's telecontrol communication machine Two-channel switching and its method for automatic switchover Download PDFInfo
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Abstract
The invention discloses the device and its automatic switching method of a kind of transformer station's telecontrol communication machine Two-channel switching, including：Signal input output module, voltage transformation module, front panel signal input output module, logic processing module, actuator module, passage input/output module, power module；The device has manually and automatically two kinds of changing methods, is respectively mounted automatic switching module during automatic switchover in two telecontrol communication machines.The device is used in the main auxiliary machine switched system of transformer station's telecontrol equipment, realize the handoff functionality of main auxiliary machine judgement, switching and the telemechanical serial ports passage of transformer station's telecontrol equipment, it is short with switching time, the characteristics of real time and reliability is high, realizes when a telecontrol communication machine restarting or does not interfere with another telecontrol communication machine data-transformation facility when closing.Meanwhile, the manually and automatically design of two kinds of switch modes meets the application demand of field control.
Description
Technical field
The present invention relates to the management of transformer station's telecontrol system, and in particular to a kind of device of transformer station's telecontrol communication machine Two-channel switching
And its method for automatically switching.
Background technology
The construction of electric power secondary system in recent years achieves tremendous development, telecontrol system as substation automation system
Individual important branch plays a part of to form a connecting link in the entire system.To ensure that transformer station's remote data can be accurately and in time
Send scheduling to, Redundancy Design has been inevitable requirement, and the switch mode of double telecontrol communication machines is for guarantee scheduling at crucial moment data biography
Defeated integrity, real-time are significant.
At present, telecontrol communication machine Two-channel switching mechanism realized typically by serial ports channel switching device, but, the switching is filled
The switching for being merely capable of realizing serial ports passage is put, and the detection of main auxiliary machine cannot be realized and judged, and its main auxiliary machine judges and cuts
The realization changed is realized by network communication between telecontrol communication machine.Additionally, current channel switching device because of its Main Function is
Passage handoff functionality is realized, therefore there is more or less, such as complex structure, cost height etc. on system convergence.From master
From the aspects of subsidiary engine judgement, switching, judge that main auxiliary machine state has poor real, reliability by network communication circuit low scarce
Point；Once in addition, network communication interface goes wrong, then occur that two telecontrol communication machines fight for the problem of main frame.
The content of the invention
For the problem of existing telecontrol communication machine Two-channel switching, the invention provides a kind of new Two-channel switching device, the dress
Put in addition to possessing serial ports passage handoff functionality, while with the function of judging and switch main auxiliary machine, judging for main auxiliary machine, switching
Function, is retained connection detection mode, and software control is mutually redundant with the control of Two-channel switching device by rational design,
The reliability of raising system.Meanwhile, the switching device has the characteristics of logical structure is simple, reliability is high.
In addition, to adapt to the different requirements for controlling environment, the Two-channel switching device has manual switching, automatically switches two kinds
Switching mode, realizes handoff functionality by hardware or software.This double machine switching method has that system structure is simple, user
Just, multiple functional the advantages of, and high real-time when possessing switching, high reliability, for the Redundancy Design of telecontrol communication machine, provide can
By ensureing.
For achieving the above object, the telecontrol communication machine Two-channel switching device includes：The signal input output module 1 that is sequentially connected,
Voltage transformation module 2, logic processing module 4, actuator module 6, passage input/output module 5；Also include being connected to logic
The front panel signal input output module 3 of processing module 4, for the power module 7 of above-mentioned module for power supply.
Signal input output module 1：The function of the module is to realize leading between Two-channel switching device and main and auxiliary telecontrol communication machine
Letter, such as, using 5 communications for realizing Two-channel switching device and telecontrol communication machine among 9 order wires, this 5 order wires are respectively
DCD, DSR, RTS, CTS, DTR, its application function are respectively, and DCD Two-channel switchings device has mark, DSR telecontrol communication machine main auxiliary machines
Signal, RTS telecontrol communication machine main auxiliary machine switching signals, CTS Two-channel switching device auto-manual mode signals, DTR telemechanicals machine host dimension
Hold signal.Signal input output module 1 is using the Serial Port Line based on standard DB9 interface.
Voltage transformation module 2：It is connected between signal input output module 1 and logic processing module 4, for by logic
The standard 5V signal of the reason input of module 4 is converted to the ± 10V output levels required by RS-232 agreements and exports to signal input
Output module 1, input a signal into output module 1 input ± 10V output levels be converted to standard 5V signal and export to logic
Processing module 4.
Front panel signal input output module 3：Signal conditioning circuit is included in the module, for by switching signal conditioning being
Standard 5V signal passes to logic processing module 4, while receiving the signal of the output of logic processing module 4 and controlling front panel display lamp
Light or extinguish.
Logic processing module 4：The module is used to receive the output signal of signal input output module 1 and above partitioned signal is defeated
Enter the input signal of output module 3, after logical judgment cutting machine signal is exported to actuator module 6, and cutting after machine
Current hosts signal be sent to signal input output module 1, front panel signal input output module 3.The module realizes two-shipper
All of logic control inside switching device, the module are made up of logical devices such as logical device trigger, NAND gate.When manual
During signal input, all control signals of logic circuit locking telecontrol communication machine only return main auxiliary machine indication signal to telecontrol communication machine；When certainly
During dynamic signal input, now all of control signal of telecontrol communication machine participates in logical operationss, according to the output of signal input output module 1
Signal is controlled to Two-channel switching device.
Actuator module 6：The module is used for the cutting machine signal for receiving the output of logic processing module 4, and signal Jing drives electricity
Control relay group behind road, to switching channel.
Passage input/output module 5：The module is used to realize that telecontrol communication machine main auxiliary machine is connected with Two-channel switching device, realizes double
The switching of machine；The module allows each 8 road serial ports of telecontrol communication machine main auxiliary machine to be input into Two-channel switching device, and 8 road serial ports are filled from Two-channel switching
Put output.
Power module 7：Power supply is designed using dual power supply hot stand by redundancy, any one piece of power work be abnormal do not affect be
The normal work of system.
The operation principle of Two-channel switching device：The voltage transformation module 2 changes the signal input output module 1 and institute
The input/output signal level of logic processing module 4 is stated, makes the two can be with proper communication；The logic processing module 4 is according to institute
The signal of the output of signal input output module 1 and the signal of the front panel signal input output module 3 input are stated through logic
Output signal is exported to the actuator module 6 after judgement, the actuator module 6 is by the passage input and output
Module 5 realizes the switching of two-shipper.
Realize that the concrete mode of telecontrol communication machine Two-channel switching there are two kinds：One kind is manual mode, will switching device be set to
Manual mode, selects current hosts to be A machines or B machines by the switching switch on the device, finally realizes Two-channel switching work(
Energy.
Another kind is automated manner, will switching device be set to automatic mode, by two telecontrol communication machines from
Dynamic handover module realizes Two-channel switching function by control signal.Realize that the method that two-shipper automatically switches comprises the steps：
Step 1：Automatic switching module is respectively mounted on the main auxiliary machine of telecontrol communication machine, automatic switching module is included for realizing
Serial ports opening with close and initialize default parameterss operation with exit module, judge current telecontrol communication machine state be main frame also
Be the main auxiliary machine state detection module of subsidiary engine, realize cutting machine module, current machine being kept for the main frame of main frame for main auxiliary machine switching
Keep module, judge that main frame judge module, detection Two-channel switching device current state that Two-channel switching device whether there is are oneself
The Two-channel switching plant running mode detection module of dynamic model formula or manual mode；
Step 2：Operation is opened serial ports and initializes power on signal with module is exited；
Step 3：Main frame judge module detection Two-channel switching device whether there is, if now there is no Two-channel switching dress
Put, then detect again, if it is present execution step 4；
Step 4：The current host identification of main auxiliary machine state detection module inspection judges whether be currently main frame, if it is
Module is kept to keep Host Status by main frame, if not as subsidiary engine；
Step 5：Two-channel switching plant running mode detection module judge current switch mode be it is automatic or manual, if
Present mode receives the main auxiliary machine status signal that Two-channel switching device is transmitted not then to be controlled manually, only, if working as front mould
Formula is automatic, and whether telemechanical machine check itself is working properly, if it is, proceeding the real-time inspection of telecontrol communication machine oneself state
Survey, if not, telecontrol communication machine sends cutting machine signal to the machine module of cutting, cut machine module by signal input output module 1 at logic
Reason module 4 sends the machine order of cutting to be carried out cutting machine.
The functional module of above-mentioned Two-channel switching device is all realized by hardware logic electric circuit that switch speed is fast, safe and reliable.
Beneficial effect：The telecontrol communication machine Two-channel switching device possesses detection main auxiliary machine state, switching main auxiliary machine, switching serial ports and leads to
The function in road.To increase the reliability of system, the function of the device is all realized by hardware logic electric circuit, so as to avoid because soft
Part problem and the failure brought, hardware realize it is fast with switch speed, many advantages, such as safe and reliable.Meanwhile, manually and automatically
The design of two kinds of switch modes, meets the application demand of field control.
Description of the drawings
Fig. 1 is the logic diagram of the hardware function of the present invention
Fig. 2 is the logic chart of the automatic switchover mode of the present invention
Fig. 3 is the front panel schematic diagram of Two-channel switching device
Fig. 4 is the rear board schematic diagram of Two-channel switching device
Fig. 5 is the system connection figure of telecontrol communication machine Two-channel switching
Specific embodiment
Below in conjunction with the accompanying drawings, illustrate the device of transformer station's telecontrol communication machine Two-channel switching and its realize the side automatically switched
Method.
As shown in figure 1, the device of telecontrol communication machine Two-channel switching includes：The signal input output module 1, voltage being sequentially connected turns
Mold changing block 2, logic processing module 4, actuator module 6, passage input/output module 5；Also include being connected to logical process mould
The front panel signal input output module 3 of block 4, for the power module 7 of above-mentioned module for power supply.
Signal input output module 1：The function of the module is to realize leading between Two-channel switching device and main and auxiliary telecontrol communication machine
Letter, such as, using 5 communications for realizing Two-channel switching device and telecontrol communication machine among 9 order wires, this 5 order wires are respectively
DCD, DSR, RTS, CTS, DTR, its application function are respectively, and DCD Two-channel switchings device has mark, DSR telecontrol communication machine main auxiliary machines
Signal, RTS telecontrol communication machine main auxiliary machine switching signals, CTS Two-channel switching device auto-manual mode signals, DTR telemechanicals machine host dimension
Hold signal.Signal input output module 1 is using the Serial Port Line based on standard DB9 interface.
Voltage transformation module 2：It is connected between signal input output module 1 and logic processing module 4, for by logic
The standard 5V signal of the reason input of module 4 is converted to the ± 10V output levels required by RS-232 agreements and exports to signal input
Output module 1, input a signal into output module 1 input ± 10V output levels be converted to standard 5V signal and export to logic
Processing module 4, such as MAX202 achieve that the function.
Front panel signal input output module 3：Signal conditioning circuit is included in the module, for by switching signal conditioning being
Standard 5V signal passes to logic processing module 4, while receiving the signal of the output of logic processing module 4 and controlling front panel display lamp
Light or extinguish.
Logic processing module 4：The module is used to receive the output signal of signal input output module 1 and above partitioned signal is defeated
Enter the input signal of output module 3, after logical judgment cutting machine signal is exported to actuator module 6, and cutting after machine
Current hosts signal be sent to signal input output module 1, front panel signal input output module 3.The module realizes two-shipper
All of logic control inside switching device, the module are made up of logical devices such as logical device trigger, NAND gate.When manual
During signal input, all control signals of logic circuit locking telecontrol communication machine only return main auxiliary machine indication signal to telecontrol communication machine；When certainly
During dynamic signal input, now all of control signal of telecontrol communication machine participates in logical operationss, according to the output of signal input output module 1
Signal is controlled to Two-channel switching device.
Actuator module 6：The module is used for the cutting machine signal for receiving the output of logic processing module 4, and signal Jing drives electricity
Control relay group behind road, to switching channel.
Passage input/output module 5：The module is used to realize that telecontrol communication machine main auxiliary machine is connected with Two-channel switching device, realizes double
The switching of machine；The module allows each 8 road serial ports of telecontrol communication machine main auxiliary machine to be input into Two-channel switching device, and 8 road serial ports are filled from Two-channel switching
Put output.
Power module 7：Power supply is designed using dual power supply hot stand by redundancy, any one piece of power work be abnormal do not affect be
The normal work of system.
The operation principle of Two-channel switching device：1 conversion signal input/output module 2 of voltage transformation module and logical process mould
The input/output signal level of block 4, makes the two can be with proper communication；Logic processing module 4 is defeated according to signal input output module 1
The signal of the signal for going out and the input of front panel signal input output module 3 after logical judgment exports output signal to execution
Mechanism module 6, actuator module 6 realize the switching of two-shipper by passage input/output module 5.
Realize that the concrete grammar of telecontrol communication machine Two-channel switching there are two kinds：One kind is manual switching method, and another kind is to cut automatically
Change method.
Manual switching method, will switching device be set to manual mode, selected by switching on device switch
Current hosts are A machines or B machines, finally realize Two-channel switching function.
Accompanying drawing 3 is the front panel schematic diagram of Two-channel switching device, realizes the function of front panel signal input output module 3,
Wherein：Manually, automatic pilot lamp indicates Two-channel switching device switch mode；A machines, B machines display lamp indicate current hosts；Ship type is opened
1 switch mode that is manual, automatically selecting current Two-channel switching device is closed, it is corresponding with shown by manual, automatic pilot lamp.When beating
When manual, it is A machines or B machines that can select current hosts by ship type switch 2；When beating in automatic transmission, ship type switch 2
Cut little ice, maintain signal by automatic switching module automatically complete according to cutting machine signal and main frame by Two-channel switching device
Switch into main auxiliary machine；POWER1 and POWER2 indicate respectively current power supply, and two power supplys are hot standby each other.
Accompanying drawing 4 is the rear board schematic diagram of Two-channel switching device, realizes signal input output module 1, passage input and output
The function of module 5, power module 7.Wherein, A, B corresponding power module 7, stand-by heat each other, wherein 1,2 terminals are dead electricity alarm
Signal.D, E correspondence signal input output module 1, is standard BD9 interface, is the connection for realizing Two-channel switching, connects remote respectively
The main and auxiliaries of motivation.C, F, G respective channel input/output module 5, C be standard DB62 interface, 8 tunnels of Two-channel switching device
Serial ports is exported；F, G are phoenix terminal interface, can connect 8 road serial ports respectively, be connected with 8 road serial ports of telemechanical main auxiliary machine, as double
The serial ports input of machine switching device.
When switching device is set to automatic switchover mode, led to by the automatic switching module in two telecontrol communication machines
Cross telecontrol communication machine to send control signal to realize two-shipper automatic switching function, in automatic switching module, the function of each submodule is as follows：
Run and exit module：The module is realized the opening of serial ports and closes and initialize default parameterss.Specifically include
Following steps：Open switching serial ports, initialization power on signal, check Two-channel switching device with the presence or absence of ＆ host identifications, notice
Exit signal, close switching serial ports.
Main auxiliary machine state detection module：The module judges current telecontrol communication machine state, is main frame or subsidiary engine.Specifically include with
Lower step：Switching device finds main frame, finds the Host Status of first Two-channel switching device identification to judge this with the presence or absence of ＆
Machine whether main frame, the presence of Two-channel switching device is considered as simply by the presence of a Two-channel switching device.
Cut machine module：The switching of main auxiliary machine is realized by the module.
Main frame keeps module：The module is used to keep current machine to be main frame.Specifically include following steps：Maintenance module
The major-minor state of major-minor state, modified module.
Main frame judge module：Judge that Two-channel switching device whether there is, if existing, with the host identification of Two-channel switching device
It is defined.
Two-channel switching plant running mode detection module：For detect Two-channel switching device current state for automatic mode also
It is manual mode.
As shown in Fig. 2 realizing two-shipper using Two-channel switching device and the above-mentioned automatic switching module in telecontrol communication machine
The step of switching, is as follows：
Step 1：Automatic switching module is respectively mounted on the main auxiliary machine of telecontrol communication machine；
Step 2：The operation is opened serial ports and initializes power on signal with module is exited；
Step 3：The main frame judge module detection Two-channel switching device whether there is, if now there is no Two-channel switching
Device, then detected again, if it is present execution step 4；
Step 4：The current host identification of the main auxiliary machine state detection module inspection judges whether be currently main frame, if
It is then to keep module to keep Host Status by main frame, if not as subsidiary engine；
Step 5：The Two-channel switching plant running mode detection module judge current switch mode be it is automatic or manual,
It is not controlled if present mode is manually, only receives the main auxiliary machine status signal that Two-channel switching device is transmitted, if works as
Premode is automatic, and whether telemechanical machine check itself is working properly, if it is, proceeding the real-time of telecontrol communication machine oneself state
Detection, if not, telecontrol communication machine sends cutting machine signal to the machine module of cutting, cuts machine module by signal input output module 1 to logic
Processing module 4 sends the machine order of cutting and carries out cutting machine.
The following is the example of the program code segments for realizing part major function：
1st, main auxiliary machine state detection module：
2nd, cut machine module：
Accompanying drawing 5 is the system connection diagram of the present invention, and in figure in addition to scheduling station, remaining is setting in transformer station
It is standby.In system, scheduling station is realized to the data acquisition of IED equipment and control function in station by telecontrol communication machine.IED equipment leads to
Cross network connection to communicate with telecontrol communication machine；Telecontrol communication machine A machine, the DB9 interfaces B D respectively with Two-channel switching device of B machines, E interface are connected
Connect, realize the communication function of telecontrol communication machine and Two-channel switching device；Telecontrol communication machine A machine, B machines serial ports C respectively with Two-channel switching device
F, G interface be connected, Jing after Two-channel switching device, 8 road serial ports of an only telecontrol communication machine are connect by the C of Two-channel switching device
Mouth output；For convenience of field connection and numeral and analog channel are adapted to, devise serial ports auxiliary equipment, while by DB62 interfaces
Phoenix terminal interface is converted to, additionally increases lightning protection function；The serial ports passage of scheduling station and serial equipment can be straight
Serial ports auxiliary equipment is connect in succession.
System electrification, two telecontrol communication machines are respectively mounted telecontrol communication machine program and run communication service, the service realize telecontrol communication machine with
The communication of scheduling station, after operation, the corresponding serial ports display lamp of telecontrol communication machine can flash, and indicate transceiving data.Check that two-shipper is cut
Whether changing device power supply indicator is light and spacious, if light and spacious explanation power supply is normal, Two-channel switching device is beaten in manual gear pattern, is entered
Row A, B machine switches, and can now hear the sound of the actuating of relay.
When telecontrol communication machine Communications service program is run, it can be seen that Two-channel switching device front panel indicates current main auxiliary machine
State.Two-channel switching device is switched to into manual gear, the switching switch that can now pass through on Two-channel switching device panel is cut
Change owner subsidiary engine and serial ports passage；Two-channel switching device is switched to into automatic gear, can now pass through cutting for software supervision interface
Button switching main auxiliary machine state and serial ports passage are changed, further, since the main frame clothes that many reasons such as hostdown or exception cause
During business operation exception, issue machine automatically can be switched to subsidiary engine by Two-channel switching device, while switch serial ports passage, because of hardware
Switch the characteristics of having switch speed fast, therefore be not in the situation of loss of data in handoff procedure.
Claims (5)
1. a kind of device of transformer station's telecontrol communication machine Two-channel switching, it is characterised in that：Including the signal input output mould being sequentially connected
Block (1), voltage transformation module (2), logic processing module (4), actuator module (6), passage input/output module (5)；Also
Including being connected to front panel signal input output module (3) of logic processing module (4), for the power module of above-mentioned module for power supply
(7)；
Signal input output module (1), for realizing communicating between Two-channel switching device and major-minor telecontrol communication machine；
Voltage transformation module (2), is connected between signal input output module (1) and logic processing module (4), for by logic
The standard 5V signal that processing module (4) is input into is converted to ± 10V the output levels required by RS-232 agreements and exports to signal
Input/output module (1), input a signal into the ± 10V output levels that output module (1) is input into and be converted to standard 5V signal defeated
Go out and give logic processing module (4)；
Logic processing module (4), for receiving the output signal and front panel signal input output of signal input output module (1)
The input signal of module (3), after logical judgment exports cutting machine signal to actuator module (6), and cutting after machine
Current hosts signal is sent to signal input output module (1), front panel signal input output module (3)；
Front panel signal input output module (3), for switching signal conditioning is passed to logic processing module for standard 5V signal
(4), while receiving logic processing module (4) signal that exports and controlling front panel display lamp and light or extinguish；
Actuator module (6), for receiving cutting machine signal control relay group that logic processing module (4) exports to cut
Change passage；
Passage input/output module (5), for realizing that telecontrol communication machine main auxiliary machine is connected with Two-channel switching device, realizes cutting for two-shipper
Change.
2. the device of a kind of transformer station's telecontrol communication machine Two-channel switching according to claim 1, it is characterised in that at the logic
Reason module (4) is made up of logical device trigger, NAND gate.
3. the device of a kind of transformer station's telecontrol communication machine Two-channel switching according to claim 1, it is characterised in that the signal is defeated
Enter output module (1) using the Serial Port Line based on standard DB9 interface.
4. a kind of device of transformer station's telecontrol communication machine Two-channel switching according to claim 1, it is characterised in that the power supply mould
Block (7) is designed using dual power supply hot stand by redundancy.
5. a kind of method automatically switched by the device of transformer station's telecontrol communication machine Two-channel switching according to claim 1, its
It is characterised by, comprises the steps：
Step 1：Automatic switching module is respectively mounted on the main auxiliary machine of telecontrol communication machine, the automatic switching module is included for realizing
Serial ports opening with close and initialize default parameterss operation with exit module, judge current telecontrol communication machine state be main frame also
Be the main auxiliary machine state detection module of subsidiary engine, realize cutting machine module, current machine being kept for the main frame of main frame for main auxiliary machine switching
Keep module, judge that main frame judge module, detection Two-channel switching device current state that Two-channel switching device whether there is are oneself
The Two-channel switching plant running mode detection module of dynamic model formula or manual mode；
Step 2：The operation is opened serial ports and initializes power on signal with module is exited；
Step 3：The main frame judge module detection Two-channel switching device whether there is, if now there is no Two-channel switching dress
Put, then detect again, if it is present execution step 4；
Step 4：The current host identification of the main auxiliary machine state detection module inspection judges whether be currently main frame, if it is
Module is kept to keep Host Status by main frame, if not as subsidiary engine；
Step 5：The Two-channel switching plant running mode detection module judge current switch mode be it is automatic or manual, if
Present mode receives the main auxiliary machine status signal that Two-channel switching device is transmitted not then to be controlled manually, only, if working as front mould
Formula is automatic, and whether telemechanical machine check itself is working properly, if it is, proceeding the real-time inspection of telecontrol communication machine oneself state
Survey, if not, telecontrol communication machine sends cutting machine signal to the machine module of cutting, machine module is cut by signal input output module (1) to logic
Processing module (4) sends the machine order of cutting and carries out cutting machine.
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Cited By (5)
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| CN108023465A (en) * | 2018-01-22 | 2018-05-11 | 上海海事大学 | One kind can carry electrochromic device power-supply controller of electric |
| CN108090009A (en) * | 2017-11-13 | 2018-05-29 | 北京全路通信信号研究设计院集团有限公司 | A kind of multimachine method, apparatus of falling machine and system |
| CN110497941A (en) * | 2019-08-27 | 2019-11-26 | 中车株洲电力机车有限公司 | Hot backup redundancy system equipment |
| CN110784007A (en) * | 2019-10-21 | 2020-02-11 | 南京南瑞继保电气有限公司 | Main and standby machine redundancy method of micro-grid coordination control device |
| CN110968021A (en) * | 2019-12-20 | 2020-04-07 | 上海亨钧科技股份有限公司 | Interlocking machine dual-system switching system and control method |
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