CN108289042A - A kind of control system and control method for power plant modem - Google Patents
A kind of control system and control method for power plant modem Download PDFInfo
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- CN108289042A CN108289042A CN201810113818.2A CN201810113818A CN108289042A CN 108289042 A CN108289042 A CN 108289042A CN 201810113818 A CN201810113818 A CN 201810113818A CN 108289042 A CN108289042 A CN 108289042A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 64
- 230000007547 defect Effects 0.000 claims abstract description 49
- 238000003379 elimination reaction Methods 0.000 claims abstract description 37
- 230000008030 elimination Effects 0.000 claims abstract description 36
- 238000009434 installation Methods 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 50
- 238000004891 communication Methods 0.000 claims description 26
- 230000000087 stabilizing effect Effects 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 230000001788 irregular Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
- H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
Abstract
The invention discloses a kind of control systems and control method for power plant modem, belong to electrical equipment technical field, control system includes control device and for electric installation, and control device includes detection module, control module, display module, memory module and the first relay；Detection module is used to detect the signal voltage of modem, and control module is used to whether restart modem according to detection signal determining；Display module restarts defect elimination number for showing, memory module restarts defect elimination information for recording, and the first relay is used to control modem and connects wires the break-make on road.By control module control power plant modem whether power-off restarting, the automatic purpose for restarting defect elimination can be realized in the case where power plant modem breaks down, the power on/off that power plant modem is realized by the first relay, to realize that power plant modem can first power off the purpose for being powered afterwards and realizing and restarting automatically when breaking down.
Description
Technical field
The present invention relates to electrical equipment technical field more particularly to a kind of control systems for power plant modem
System, in addition, the invention further relates to the control methods of such control system.
Background technology
As country fosters the policy of new energy, the access speed in power plant is accelerated, and the quantity in power plant gradually increases,
The scale of dispatching terminal acquisition power plant data constantly increases, and net, provincial electric power company want the quality sent on data acquisition of plant
Ask also higher and higher.2016, " adjust scope tube generate electricity in real time information collection accuracy " was included in county by Zhejiang Electric Power Company
The achievement of Utilities Electric Co. is to marking index, since the operation maintenance personnel level in power plant is irregular, data acquisition of plant equipment
The ratio of defects that quality compared with substation, can not also result in data acquisition of plant is high, significantly increases main website O＆M people
The workload of member.
Statistics and analysis is carried out it is found that modem by acquiring defect situation to the data in power plant over the past two years
Defect accounts for 90% or more of power plant defect sum, accounts for relatively high.The modem that power plant uses is mounted on power plant control
In the telecontrol communication screen of room processed, input termination telecontrol communication machine, the output terminating communications equipment of modem, modem will be remote
The digital signal of motivation is converted into analog signal, and whole station gathered data is uploaded to main station side by communication apparatus, therefore, modulation
Demodulator is the important equipment that data interaction is carried out between power plant automation system and master station automation system.
In addition, according to the defect elimination statistical data of power plant modem it is found that 95% or so modem defect
Defect elimination can be carried out by restarting mode.Currently, existing power plant modem defect elimination process flow is：Dispatching terminal is being sent out
After existing power plant data exception, first tentatively judged, after excluding main station side reason, notice power plant personnel set to field verification
Standby, background information simultaneously restarts modem, then judges whether data are restored.According to the record of dispatching log it is found that according to
The overall average of existing process flow defect elimination modem takes as 94min, wherein power plant maintenance personnel rushes towards the flat of scene
It takes as 84min, accounts for overall average takes 89%.In addition, foundation《Zhejiang power grid county regulation and control integral automation system fortune
Row maintenance management method》The 9.1.2 articles of regulation in (Zhejiang 2015 ﹞ of electricity Gui ﹝ 17), modem delay machine causes doomed dead according to category
In urgent defect.Meanwhile provincial company achievement monthly examines mark index " adjust scope tube generate electricity in real time information collection accuracy ", it is right
The minimum check requirements of power plant data are that must refresh 4 times for 1 hour, i.e., doomed dead to directly affect finger achievement according to 15 minutes or more
To mark.The case where power plant modem takes place frequently there are stage needs main website to increase tour dynamics, and contact power generation repeatedly
Factory maintenance personnel carries out defect elimination, so brings no small index O＆M pressure to power plant maintenance personnel.
Invention content
In order to solve above-mentioned shortcoming and defect existing in the prior art, the present invention provides one kind in power plant modulatedemodulate
It can make the control system for power plant modem that it restarts automatically when device being adjusted to break down.
In order to achieve the above technical purposes, provided by the present invention for the control system of power plant modem, including
Control device and for electric installation, is used to be converted into being powered to control device after power supply by external power supply for electric installation；
The control device includes detection module, control module, display module, memory module and the first relay；
The detection module is used to detect the signal voltage of modem, and the input terminal electricity of detection module is connected to modulatedemodulate
Device, output end electricity is adjusted to be connected to the input terminal of control module；
The control module is used to whether restart modem according to the detection signal determining of detection module；
The display module restarts defect elimination number for modulation demodulator, and display module electricity is connected to control module
Output end；
What the memory module was used to record modem restarts defect elimination information, and memory module electricity is connected to control module
Output end；
First relay is used to control modem and connects wires the break-make on road, and the first relay electricity is connected to control mould
The output end of block.
Preferably, the control device further includes the communication module that electricity is connected to control module output end, and communication module is being adjusted
Modulator-demodulator reports and submits warning when restarting number in fixed time period more than preset times value.
Preferably, the control device further includes the second relay that electricity is connected to control module output end, the second relay
For controlling whether modem starts self-check program.
Preferably, described for electric installation includes power supply changeover device and Voltage stabilizing module, and power supply changeover device is equipped with the first power connection end
With the first feeder ear, Voltage stabilizing module is equipped with the second power connection end and the second feeder ear, and the first power connection end electricity is connected to external power supply, and second
Power connection end and the first relay electricity are connected to the first feeder ear of power supply changeover device, control module, detection module, display module and deposit
Storage module electricity is connected to the second feeder ear of Voltage stabilizing module.
Preferably, the power supply changeover device electricity is connected to the circuit of external power supply equipped with fuse.
After adopting the above technical scheme, provided by the present invention for power plant modem control system have it is as follows
Advantage：
1, provided by the present invention for the control system of power plant modem, using detection module to the tune in power plant
Modulator-demodulator is measured in real time, by control module control power plant modem whether power-off restarting, can generate electricity
Factory's modem realizes the purpose for restarting defect elimination automatically in the case of breaking down, and power plant tune is realized by the first relay
The power on/off of modulator-demodulator can first power off the automatic weight of the realization that is powered afterwards to realize power plant modem when breaking down
The purpose opened.It greatlys save and is taken and defect elimination cost, reduction power plant maintenance personnel using the defect elimination needed for existing process flow
O＆M pressure.It, can the effective whole required manufacturing cost of control system in addition, the structure of equipment entirety is simple.
2, control system also sets up the communication module that electricity is connected to control module output end, when modem is in the set time
In section when restarting number more than preset value, communication module reports and submits warning to dispatching terminal, reminds the artificial defect elimination of staff's needs,
The defect elimination action of restarting of excessive number is avoided to influence the normal work of power plant modem, while by restarting modulatedemodulate
It is reminded in the case of adjusting device to can not achieve defect elimination purpose, operation maintenance personnel is made effectively to solve sent out failure.
3, the startup that power plant modem self-check program is realized by the second relay, does not occur in modem
It actively debugs in the case of failure.
4, include power supply changeover device and Voltage stabilizing module for electric installation, external power supply is converted by 12V by power supply changeover device
Direct current, for being powered to the first relay and the second relay.By Voltage stabilizing module, further by the direct current of 12V
Electricity is converted into the direct current of 5V, for being powered to control module, detection module, display module and memory module.Rationally set
Set the power requirement for making output voltage better meet each electronic component for electric installation.
5, it is connected on the circuit of external power supply in power supply changeover device electricity and fuse is set, fusing cut-out circuit when realizing overload
Protection purpose, it is impaired when each electronic component being avoided to overload, better meet requirement.
The present invention also provides a kind of control method using the above-mentioned control system for power plant modem, packets
Include following steps：
The signal voltage U of S1, detection module detection modemS, as signal voltage USIt is pre- more than the voltage of detection module
If value UPWhen, detection module continues output pulse signal, control module return pulse signal and does not make execution signal；
If the signal voltage U in S2, step S1SLess than the voltage preset value U of detection moduleP, detection module stopping output arteries and veins
Signal is rushed, when control module does not receive pulse signal in preset time period Δ t, control module makes power-off and executes signal simultaneously
It is sent to the first relay；
After power-off in S3, the first relay receiving step S2 executes signal, the normally-closed contact of the first relay disconnects, and adjusts
The road disconnection of connecting wires of modulator-demodulator, modem are out of service；
If the power-off time Δ T of modem reaches delay time preset value T in S4, step S3PWhen, control module is made
Go out to be powered and executes signal and be sent to the first relay；
After energization in S5, the first relay receiving step S4 executes signal, the normally-closed contact of the first relay is closed, and is adjusted
The road energization of connecting wires of modulator-demodulator, realizes that modem is restarted；Meanwhile restarting information is sent to storage mould by control module
Block is recorded, this time is restarted number and be sent to display module by control module to be shown.
Preferably, the control method further includes step S6,
If S6, modem are in fixed time period TFRestarted for interior the m times, control module locking stops to first
Relay sends power-off and executes signal.
Preferably, the control system for power plant modem further includes that electricity is connected to control module output end
Communication module, in step S6, control module makes caution signal simultaneously and is sent to communication module, and communication module receives warning letter
It is reported and submitted after number.
Preferably, the voltage preset value U of the detection modulePIt it is 2min, delay time for 127mV, preset time period Δ t
Preset value TPFor 5s, fixed time period TFFor 15min, m 6.
Preferably, the control system for power plant modem further includes that electricity is connected to control module output end
Second relay, the second relay is used to start the self-check program of modem, if the first relay is normally closed in step S3
Contact does not disconnect, and control module makes energization and executes signal and be sent to the second relay, and the normally opened contact of the second relay exists
It receives and is closed after being powered execution signal, modem enters self-check program；After modem self-check program, mould is detected
Block detects the signal voltage U of modemSIf signal voltage USMore than the voltage preset value U of detection moduleP, detection module holds
Continue output pulse signal, makes reset signal after control module return pulse signal and be sent to the second relay, the second relay
The normally opened contact of the second relay restores to normally open after device reception reset signal.
Control method provided by the invention about above-mentioned control system has the following advantages that：
1, control method provided by the invention, step is simple, and the signal voltage by detecting modem realizes control
Judgement of the module to modem whether normal operation, basis for estimation is reliable, is convenient for detecting.When the letter of modem
When number electric voltage exception, control module passes through the road of connecting wires that the first relay cuts off modem, modem power-off.When
When the power-off time of first relay reaches delay time preset value, the first relay resets under the order of control module, adjusts
The road energization of connecting wires of modulator-demodulator, realization are restarted.The action that modem restart defect elimination is simple, can realize well
Defect elimination purpose.
2, when the number that modem is restarted in fixed time period reaches certain numerical value, control module locking, no
Power-off being sent to the first relay again and executing signal, modem is avoided excessively to repeat damage caused by power on/off in a short time
It ruins, ensures the service life of modem.It several times can't be real in addition, restarting in fixed time period when modem
When existing defect elimination purpose, shows that this defect cannot be eliminated by way of restarting modem, it need to be taken
His defect elimination mode, locking in time is avoided that modem invalid restart to control module in this case.
3, when the number that modem is restarted in fixed time period reaches certain numerical value, control module is latched same
When caution signal is reported and submitted to dispatching terminal by communication module, convenient for reminding dispatching terminal that other modes is taken to carry out defect elimination in time.
4, the voltage preset value U of detection modulePIt is 2min, delay time preset value T for 127mV, preset time period Δ tPFor
5s, fixed time period TFFor 15min, m 6.Each numerical value is rationally set, so that each step of control method is more reasonable, more preferably
Satisfaction use purpose.
5, when the first relay cannot cut off in time modem connect wires road when, the normally opened contact of the second relay
It is closed, modem proceeds by self-test to eliminate defect.After modem self-check program, detection module is again
The signal voltage of modem is detected, if my modem works, the second relay resets, and normally opened contact restores to normal
Open state, avoid influence modem normal work, by second relay can program crash, device dead electricity,
Defect elimination is carried out using self test mode when the first relay damaged, the universality and versatility of control method is improved, better meets
Defect elimination purpose.
Description of the drawings
Fig. 1 is circuit diagram of the embodiment of the present invention one for the control system of power plant modem；
Fig. 2 is circuit diagram of the embodiment of the present invention one for detection module in the control system of power plant modem；
Fig. 3 is circuit diagram of the embodiment of the present invention one for display module in the control system of power plant modem；
Fig. 4 is circuit diagram of the embodiment of the present invention one for control module in the control system of power plant modem；
Fig. 5 is circuit diagram of the embodiment of the present invention one for the control system repeat circuit of power plant modem；
Fig. 6 is the embodiment of the present invention one for the circuit diagram for electric installation in the control system of power plant modem；
Fig. 7 is schematic diagram of the embodiment of the present invention one for outer box in the control system of power plant modem；
Fig. 8 is schematic diagram of the embodiment of the present invention one for front cover portion in the control system of power plant modem；
Fig. 9 is stereogram of the embodiment of the present invention one for protecgulum in the control system of power plant modem；
Figure 10 is schematic diagram of the embodiment of the present invention one for bottom housing section in the control system of power plant modem；
Figure 11 is control method flow chart of the embodiment of the present invention one for the control system of power plant modem.
In figure, 100- modems, 200- control devices, 201- detection modules, 202- control modules, 203- display moulds
Block, 204- memory modules, the first relays of 205-, the second relays of 206-, 207- communication modules, 300- is for electric installation, 301-
Power supply changeover device, 302- Voltage stabilizing modules, 303- fuses, 400- outer box, 1- bottom cases, 11- bottom plates, 12- transverse slats, 13- flange, 2-
Protecgulum, 21- cover boards, 22- side plates, 23- display windows, 24- through-holes, 3- master controls switch, 4- line banks, 5- fastener holes, 6- control base
Plate, 7- power supply boards.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.It is to be appreciated that following "upper",
Indicating positions or the position such as "lower", "left", "right", " longitudinal direction ", " transverse direction ", "inner", "outside", "vertical", "horizontal", "top", "bottom"
The word for setting relationship is based only upon orientation or positional relationship shown in the drawings, only for the purposes of the description present invention and simplifies description, and
It is not instruction or implies that signified device/element must have a particular orientation or with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
Embodiment one
As shown in Figure 1, the control system for power plant modem that the embodiment of the present invention one provides, including control
Device 200 and for electric installation 300, is used to be converted into supplying to control device after power supply by external power supply for electric installation
Electricity, control device 200 include detection module 201, control module 202, display module 203 and memory module 204.Detection module
201 signal voltage for detecting modem 100, control module 202 are used for the detection signal determining according to detection module
Whether modem is restarted.The input terminal electricity of detection module 201 is connected to modem 100, the output end electricity of detection module
It is connected to the input terminal of control module 202.Display module 203 restarts defect elimination number for modulation demodulator 100, shows mould
Block electricity is connected to the output end of control module 202.What memory module 204 was used to record modem 100 restarts defect elimination information, deposits
Storage module electricity is connected to the output end of control module 202.
The modem 100 in power plant is measured in real time by detection module 201, is controlled by control module 202
Power plant modem processed whether power-off restarting, can be realized in the case where power plant modem breaks down automatic
The purpose for restarting defect elimination is greatlyd save and is taken and defect elimination cost, reduction power plant dimension using the defect elimination needed for existing process flow
The O＆M pressure of shield personnel.It, can the effective whole required manufacturing cost of control system in addition, the structure of equipment entirety is simple.
Control device 200 further includes the first relay 205 that electricity is connected to 202 output end of control module, and the first relay is used
It connects wires the break-make on road in control modem 100.Control device 200 further includes that electricity is connected to 202 output end of control module
Second relay 206, the second relay is for controlling whether modem 100 starts self-check program.Pass through the first relay
205 and second relay 206 low-voltage control modem 100 high voltage, control effect is good, well meet control
The requirement of system.
In the present embodiment, control device 200 further includes the communication module 207 that electricity is connected to 202 output end of control module, communication
Module reports and submits warning when restarting number in fixed time period more than preset times value in modem 100 to dispatching terminal.It carries
The staff that wakes up needs artificial defect elimination, and the defect elimination action of restarting of excessive number is avoided to influence the normal work of power plant modem
Make, while being reminded in the case where can not achieve defect elimination purpose by restarting modem, operation maintenance personnel is made effectively to solve
Certainly sent out failure.
Currently, the normal signal voltage U for the modem 100 that power plant usesSFor AC400mV~500mV, most high frequency
Rate is 2880Hz, and signal voltage when modem breaks down is less than 100mV, due to need to only judge that modem is just
Normal or failure, without measuring the concrete numerical value of modem signal voltage, therefore, the detection module 201 in the present embodiment
Testing requirements can be met using voltage comparator.
Specific in the present embodiment, detection module 201 uses LM311 voltage comparators, circuit diagram as shown in Fig. 2, by R1,
R2 forms input signal bleeder circuit, and intrinsic standoff ratio is about 9:10, the positive input terminal U+ of voltage comparator is input to after partial pressure.By
R1, C5 form RC passive low-pass filter circuits, bandwidth about 1kHz, for filtering out high-frequency interferencing signal.Limit is formed by R1, D1, D2
Width circuit, protects detection module not to be burned, and improves circuit reliability, such as accidentally accesses the voltage of 220V in this circuit, inputs
The maximum value of voltage is limited in ± 0.7V.Voltage comparator threshold voltage adjustment circuit is formed by R3, W1 ,+5V accesses voltage warp
The negative input end U- of voltage comparator is input to after bleeder circuit partial pressure, this threshold voltage adjustment value is0.9=
127mV, i.e. the voltage preset value U of detection module 201PFor 127mV.
When modem 100 works normally, the signal voltage U of modemSMore than 100mV, through bleeder circuit
After partial pressure, when the instantaneous value of U+ is more than U- (127mV), the pin 7 of voltage comparator U2 exports high level.When the instantaneous value of U+
When less than U- (127mV), the pin 7 of voltage comparator U2 exports low level.Therefore, when the signal voltage of modem 100
USWhen more than 100mV, detection module 201 just has output of pulse signal.
When modem 100 breaks down, the signal voltage U of modemSLess than 100mV, through bleeder circuit
After partial pressure, the maximum value of U+ is less than U- (127mV), and the pin 7 of voltage comparator U2 exports low level always, at this point, detection mould
Block 201 does not have output of pulse signal.Therefore, output of pulse signal whether can judges modulatedemodulate according to detection module 201
Adjust whether device breaks down.
In the present embodiment, display module 203 is equipped with five segment liquid crystal display screens, and the physical circuit figure of display module is such as
Shown in Fig. 3, U5 is the driving chip of segment liquid crystal display screen, and liquid crystal display, which can at most be shown 99999 times, restarts number, very well
Satisfaction display restart the purpose of defect elimination number.
In the present embodiment, control module 202 uses microcontroller, memory module 204 that storage chip, memory module is used to be used for
Record occurs the data such as notice main station time point, defect expressivity time point, communication module 207 when defect and uses 4G network communication moulds
The wire communication module of block or RS485 type interfaces.The physical circuit figure of microcontroller R8, C8, C9, C10 as shown in figure 4, be made of
Electric source filter circuit can improve stability with the noise of filtering circuit.J6 is the driving interface of display module 203, and U4 is storage
Chip.
The circuit of first relay and the second relay by R11 and V2, R10 and V1 as shown in figure 5, form triode switch
Circuit, when control module 202 export high level when, triode saturation conduction, relay energized action, wherein K1 be first after
Electric appliance, K2 are the second relay.
Include power supply changeover device 301 and Voltage stabilizing module 302 for electric installation 300, power supply changeover device 301 is equipped with the first power connection end
With the first feeder ear, Voltage stabilizing module 302 is equipped with the second power connection end and the second feeder ear.First power connection end of power supply changeover device 301
Electricity is connected to external power supply, and the second power connection end electricity of the first relay 205, the second relay 206 and Voltage stabilizing module 302 is connected to first
Feeder ear, control module 202, detection module 201, display module 203 and 204 electricity of memory module are connected to the of Voltage stabilizing module 302
Two feeder ears.
In the present embodiment, the output voltage of power supply changeover device 301 is 12V DC electricity, and the output voltage of Voltage stabilizing module 302 is
5V direct currents.In order to improve safety, the circuit that the first power connection end electricity is connected to external power supply is equipped with fuse 303.
Power supply changeover device 301 uses AC/DC converters, Voltage stabilizing module 302 to use three terminal regulator.For electric installation 300
Circuit diagram is as shown in fig. 6, AC220V power supplys become DC12V power supplys after power supply changeover device 301, then become through Voltage stabilizing module 302
DC5V power supplys, 12V power supplys are the first relay 205, the power supply of the second relay 206, and 5V power supplys are that other electronic components are powered, electricity
C1, C2, C3, C4 in road are power filtering capacitor.
As shown in Fig. 7, Fig. 8, Fig. 9, Figure 10, control system further includes for accommodating control device 200 and for electric installation 300
Outer box 400, outer box 400 include that the bottom case 1 that is fixed together and protecgulum 2, display module 203 are fixed on the inner wall of protecgulum 2,
Protecgulum is equipped with display window 23 corresponding with display module, and the master control switch for realizing control system start and stop is additionally provided on protecgulum
3, bottom case 1 is equipped with line bank 4.
Protecgulum 2 includes cover board 21 and the side plate 22 set on cover board arranged on left and right sides, and display window 23 is set on cover board, and master control is opened
It closes 3 to be set on cover board, and master control switch is connected to set on the first power connection end electricity of power supply changeover device on the circuit of external power supply, cover board
21 are equipped with the through-hole 24 for installing master control switch.
Bottom case 1 includes that bottom plate 11 and the transverse slat 12 set on the upper and lower both sides of bottom plate, line bank 4 are fixed on the cross being located above
On plate and it is used for wiring.Protecgulum 2 is fixed together with bottom case 1 by fastener, in the present embodiment, is passed through between protecgulum and bottom case
Screw, which is realized, to be fixed, and the edge of transverse slat 12 is equipped with the flange 13 of infolding, is equipped with mutually on the edge of protecgulum 2 and flange 13
Corresponding fastener hole 5 realizes the fixation between back box and protecgulum by the cooperation of screw and fastener hole.
In the present embodiment, the inner wall of bottom case 1 is equipped with control base board 6 and power supply board 7, detection module 201, control module
202, memory module 204 and communication module 207 are set in control base board 6, power supply changeover device 301, Voltage stabilizing module 302 and fuse
303 are set on power supply board 7.
As shown in figure 11, the control method of the present embodiment control system includes the following steps：
S1, detection module 201 detect the signal voltage U of modem 100S, as signal voltage USMore than detection module
Voltage preset value UPWhen, detection module continues output pulse signal, 202 return pulse signal of control module and does not make and executes letter
Number；
If the signal voltage U in S2, step S1SLess than the voltage preset value U of detection module 201P, the stopping of detection module 201
Output pulse signal, when control module 201 does not receive pulse signal in preset time period Δ t, control module 202 is made disconnected
Electricity executes signal and is sent to the first relay 205；
After power-off in S3,205 receiving step S2 of the first relay executes signal, the normally-closed contact of the first relay is disconnected
It opens, the road disconnection of connecting wires of modem 100, modem is out of service；
S4, reach delay time preset value T as the power-off time Δ T of modem 100 in step S3PWhen, control mould
Block 202 makes energization and executes signal and be sent to the first relay 205；
After energization in S5,205 receiving step S4 of the first relay executes signal, the normally-closed contact of the first relay closes
It closes, the circuit energization of connecting wires of modem realizes that modem is restarted；Meanwhile control module sends restarting information
It is recorded to memory module, this time is restarted number and be sent to display module by control module to be shown.
If S6, modem 100 are in fixed time period TFRestarted for interior the m times, control module locking, is stopped to the
One relay sends power-off and executes signal.
For optimal control method, the voltage preset value U of detection module 201PIt is for 127mV, preset time period Δ t
2min, delay time preset value TPFor 5s, fixed time period TFFor 15min, m 6.
In order to notify main station side in time, in step S6, control module 202 makes caution signal simultaneously and is sent to communication mould
Block 207, communication module are reported and submitted after receiving caution signal to main station side.It reminds staff to need artificial defect elimination, avoided repeatedly
It is several to restart defect elimination action and influence the normal work of power plant modem, while cannot be real by restarting modem
It is reminded in the case of existing defect elimination purpose, operation maintenance personnel is made effectively to solve sent out failure.
Second relay 206 is used to start the self-check program of modem, if the first relay is normally closed in step S3
Contact does not disconnect, and control module makes energization and executes signal and be sent to the second relay, and the normally opened contact of the second relay exists
It receives and is closed after being powered execution signal, modem enters self-check program.After modem self-check program, mould is detected
Block detects the signal voltage U of modemSIf signal voltage USMore than the voltage preset value U of detection moduleP, detection module holds
Continue output pulse signal, makes reset signal after control module return pulse signal and be sent to the second relay, the second relay
The normally opened contact of the second relay restores to normally open after device reception reset signal.
In order to improve the reliability of control system overall operation, 202 built-in self program of control module, when equipment is integrally transported
Row certain time or after restarting and reaching certain number, control module starts self-check program, actively excludes the defect of control system.
In addition to above preferred embodiment, the present invention also has other embodiments, those skilled in the art can be according to this
Invention makes various changes and modifications, and without departing from the spirit of the present invention, should all belong in claims of the present invention and determine
The range of justice.
Claims (10)
1. a kind of control system for power plant modem, which is characterized in that
Including control device and for electric installation, for electric installation be used for by external power supply be converted into after power supply to control device into
Row power supply；
The control device includes detection module, control module, display module, memory module and the first relay；
The detection module is used to detect the signal voltage of modem, and the input terminal electricity of detection module is connected to modulation /demodulation
Device, output end electricity are connected to the input terminal of control module；
The control module is used to whether restart modem according to the detection signal determining of detection module；
The display module restarts defect elimination number for modulation demodulator, and display module electricity is connected to the output of control module
End；
What the memory module was used to record modem restarts defect elimination information, and memory module electricity is connected to the output of control module
End；
First relay is used to control modem and connects wires the break-make on road, and the first relay electricity is connected to control module
Output end.
2. the control system according to claim 1 for power plant modem, which is characterized in that the control dress
It further includes that electricity is connected to the communication module of control module output end to set, and communication module is in modem in restarting in fixed time period
Number reports and submits warning when being more than preset times value.
3. the control system according to claim 1 for power plant modem, which is characterized in that the control dress
It further includes electric the second relay for being connected to control module output end to set, and the second relay is for controlling whether modem starts
Self-check program.
4. the control system according to claim 1 or 2 or 3 for power plant modem, which is characterized in that described
Include power supply changeover device and Voltage stabilizing module for electric installation, power supply changeover device is equipped with the first power connection end and the first feeder ear, voltage stabilizing mould
Block is equipped with the second power connection end and the second feeder ear, and the first power connection end electricity is connected to external power supply, the second power connection end and the first relay
Electricity is connected to the first feeder ear of power supply changeover device, and control module, detection module, display module and memory module electricity are connected to voltage stabilizing mould
Second feeder ear of block.
5. the control system according to claim 4 for power plant modem, which is characterized in that the power supply turns
The circuit that parallel operation electricity is connected to external power supply is equipped with fuse.
6. the controlling party using the claims 1-5 any one of them for the control system of power plant modem
Method includes the following steps：
The signal voltage U of S1, detection module detection modemS, as signal voltage USMore than the voltage preset value of detection module
UPWhen, detection module continues output pulse signal, control module return pulse signal and does not make execution signal；
If the signal voltage U in S2, step S1SLess than the voltage preset value U of detection moduleP, detection module, which stops output pulse, to be believed
Number, when control module does not receive pulse signal in preset time period Δ t, control module makes power-off and executes signal and send
To the first relay；
After power-off in S3, the first relay receiving step S2 executes signal, the normally-closed contact of the first relay disconnects, modulatedemodulate
Adjust the road disconnection of connecting wires of device, modem out of service；
S4, reach delay time preset value T as the power-off time Δ T of modem in step S3PWhen, control module is made logical
Electricity executes signal and is sent to the first relay；
After energization in S5, the first relay receiving step S4 executes signal, the normally-closed contact of the first relay is closed, modulatedemodulate
The road energization of connecting wires for adjusting device, realizes that modem is restarted；Meanwhile control module by restarting information be sent to memory module into
Row record, this time is restarted number and be sent to display module by control module to be shown.
7. control method according to claim 6, which is characterized in that the control method further includes step S6,
If S6, modem are in fixed time period TFRestarted for interior the m times, control module locking stops to the first relay
It sends power-off and executes signal.
8. control method according to claim 7, which is characterized in that the control system for power plant modem
System further includes that electricity is connected to the communication module of control module output end, and in step S6, it is concurrent that control module makes caution signal simultaneously
Communication module is given, communication module is reported and submitted after receiving caution signal.
9. control method according to claim 7, which is characterized in that the voltage preset value U of the detection modulePFor
127mV, preset time period Δ t are 2min, delay time preset value TPFor 5s, fixed time period TFFor 15min, m 6.
10. according to claim 6-9 any one of them control methods, which is characterized in that described to be used for power plant modulation /demodulation
The control system of device further includes the second relay that electricity is connected to control module output end, and the second relay is for starting modulation /demodulation
The self-check program of device, if the normally-closed contact of the first relay does not disconnect in step S3, control module makes energization and executes signal simultaneously
It is sent to the second relay, the normally opened contact of the second relay is closed after receiving energization and executing signal, and modem enters
Self-check program；After modem self-check program, detection module detects the signal voltage U of modemSIf signal is electric
Press USMore than the voltage preset value U of detection moduleP, detection module continues output pulse signal, after control module return pulse signal
It makes reset signal and is sent to the second relay, the normally opened contact of the second relay is extensive after the second relay reception reset signal
Again to normally open.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810113818.2A CN108289042A (en) | 2018-02-05 | 2018-02-05 | A kind of control system and control method for power plant modem |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810113818.2A CN108289042A (en) | 2018-02-05 | 2018-02-05 | A kind of control system and control method for power plant modem |
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Family
ID=62836506
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|---|---|---|---|
| CN201810113818.2A Pending CN108289042A (en) | 2018-02-05 | 2018-02-05 | A kind of control system and control method for power plant modem |
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| CN110086683A (en) * | 2019-05-28 | 2019-08-02 | 广东电网有限责任公司 | A kind of self-starting Dual module modem apparatus and system |
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