CN104898547B - A kind of wind electricity change paddle PLC detection methods and detection means - Google Patents
A kind of wind electricity change paddle PLC detection methods and detection means Download PDFInfo
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- CN104898547B CN104898547B CN201510255977.2A CN201510255977A CN104898547B CN 104898547 B CN104898547 B CN 104898547B CN 201510255977 A CN201510255977 A CN 201510255977A CN 104898547 B CN104898547 B CN 104898547B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/15—Plc structure of the system
- G05B2219/15078—Modules, construction of system
Abstract
A kind of wind electricity change paddle PLC detection methods and detection means, including main control PLC, tri- groups of feature PLC of A#, B#, C# and host computer, using main control PLC as detection terminal, wind electricity change paddle PLC each functional module to be measured is replaced to the corresponding normal module in main control PLC, A#, B#, C#PLC group respectively, observation master control itself realizes the detection to each module of DIO, RTD and SSI in wind electricity change paddle PLC with the running status of be connected each feature PLC groups.The application is unified to similar module to complete specific aim test, realizes disposable grafting using the overall connector of cable between PLC module and module, between module and peripheral hardware, eliminates each passage solution lines of PLC and the repeated work of wiring.
Description
Technical field
The application is related to PLC detection methods and detection means, more particularly to a kind of wind electricity change paddle PLC detection methods and detection
Device.
Background technology
Wind energy is used as clean energy resource with fastest developing speed in regenerative resource, its scale and commercialized development prospect, quilt
Paid attention to countries in the world.At present, stable operations of the PLC in wind power generating set control, is generally accepted both at home and abroad.Become
Pitch control system is the important device of the control of MW class above wind power generating set and protection, is the main brake system of fan parking
System.Pitch-controlled system PLC is as the control core of pitch-controlled system, and the stability of its each functional module operation is particularly important.
The change oar PLC of complete set includes control module, CAN main websites communication module (controller LAN module, reality substantially
Now become between oar PLC and variable pitch driver and communicate), CAN slave stations communication module (controller LAN module, realize become oar PLC with
Communicated between blower fan master control), Profibus-DP slave stations communication module (realize and become oar PLC and blower fan by Process FieldbusROFIBUS module
Communicated between master control, hereafter simply referred to as DP modules), DIO modules (digital quantity input/output module, major control and control relay
Adhesive and disconnection), RTD modules (resistance temperature detecting module, to detect the temperature value that PT100 is reacted) and SSI modules
(synchronous serial interface module, to receive encoder angular value signal).
Pitch-controlled system PLC passes through CANopen or Profibus-DP buses and blower fan using CAN slave stations or DP slave stations module
Communicated between master control system, after master location instruction is received, control is made to blade position.Become oar PLC DIO modules
By receiving the 24V signal detection peripheral hardware component states of the feedbacks such as power supply, control button and relay, by sending 24V letters
Number control device start and stop, by RTD module monitors emphasis devices and ambient temperature, pass through SSI modules and read present encoding
Device angle value.Because the sampling observation of change oar PLC module storage, test of dispatching from the factory, live failed part return and are required for carrying out each important parameter
Confirm, it is therefore desirable to design a set of change oar PLC special detection devices to substitute a whole set of pitch-controlled system and blower fan main control device, realize
The specific aim test of module to be measured.Have PLC producers devise judge PLC module whether the detection means of normal work, but can not
Detect operational factors of the pitch-controlled system PLC under special operation condition and demand.
The content of the invention
Become actual motion effect of each modules of oar PLC under special operation condition for convenience of detection, the application is proposed with a set of master
It is detection terminal to control PLC, and each generic module in a whole set of change oar PLC to be detected is carried out into specific aim test according to function packet and united
One processing, the method being directly connected between PLC module and external device using the overall connector of cable, can be examined high-efficiency high-accuracy
Survey the running status for becoming each modules of oar PLC.
This application discloses a kind of wind electricity change paddle PLC detection means and the wind electricity change paddle PLC based on the detection means inspection
Survey method.
The application specifically uses following technical scheme：
A kind of wind electricity change paddle PLC detection methods and detection means, including main control PLC, tri- groups of PLC groups of A#, B#, C#, it is special
Levy and be：
Using main control PLC as detection terminal, by wind electricity change paddle PLC each functional module to be measured replace respectively main control PLC,
Corresponding normal module in A#, B#, C#PLC group, observation main control PLC is realized pair be connected tri- groups of running statuses of A#, B#, C#
The detection of each module of DIO, RTD and SSI in wind electricity change paddle PLC.
Wind electricity change paddle PLC detection means, including main control PLC, A#PLC groups, B#PLC groups, C#PLC groups, host computer, for reality
1 DP slave stations module existing to wind electricity change paddle PLC to be measured, 1 CAN master station module, 3 CAN slave stations modules, one group of DIO module,
The detection of one group of RTD module and one group of SSI module；It is characterized in that：
The main control PLC, A#PLC groups, B#PLC groups and C#PLC groups configure normal PLC module before testing；
Wherein, the main control PLC configures one group of DIO modules, 1 CAN master station modules, 3 CAN slave stations modules, 1 DP master
Module of standing and 1 DP slave station module；
The A#PLC, which is assembled, puts 1 DP slave stations module, 1 CAN master station module and one group of DIO module；
The B#PLC, which is assembled, puts 1 CAN slave stations module, 1 CAN master station module and one group of RTD module；
The C#PLC configures 1 CAN slave stations module, 1 CAN master station module and one group of SSI module；
By 1 wind electricity change paddle PLC to be measured DP slave stations module, 1 wind electricity change paddle PLC to be measured CAN master station modules, 3
Wind electricity change paddle PLC to be measured CAN slave stations module replaces the original normal 1 DP slave station module of main control PLC, 1 CAN main website respectively
Module and 3 CAN slave station modules, realization wind electricity change paddle PLC to be measured to 1 DP slave stations module, 1 wind electricity change paddle to be measured
The detection of PLC CAN master station modules and 3 wind electricity change paddle PLC to be measured CAN slave station modules；
Wind electricity change paddle PLC to be measured DIO modules are replaced into the normal DIO modules that A#PLC group first wifves put；
Wind electricity change paddle PLC to be measured RTD modules are replaced into the normal RTD modules that B#PLC group first wifves put；
Wind electricity change paddle PLC to be measured SSI modules are replaced to the normal SSI modules of C#PLC groups Central Plains configuration；
3 CAN slave stations modules to be measured in the main control PLC are connected respectively A#PLC by CAN communication line
DP slave stations module in group, B#PLC groups, the CAN master station modules of C#PLC groups, A#PLC groups passes through Profibus-DP communication cables
It is connected in main control PLC in DP master station modules, the CAN slave station modules in CAN slave stations module and C#PLC groups in B#PLC groups
It is connected to by CAN communication cable in CAN master station modules to be measured in main control PLC；
Data interaction is carried out by universal serial bus between module and module in each PLC groups；
Overall plug-in unit is corresponding connects by cable for DIO modules in the main control PLC and DIO modules to be measured in A#PLC groups
Connect, i.e., the input channel of the DIO modules in main control PLC is correspondingly connected in DIO module output channels to be detected, main control PLC
The output channels of DIO modules be correspondingly connected to DIO module input channels to be detected；
RTD modules to be measured distinguish external variable resistor in B#PLC groups；
SSI modules to be measured distinguish external encoder in C#PLC groups；
The unified B# that receives of CAN master station modules to be measured in main control PLC uploads information with CAN slave stations module in C#PLC groups；
CAN master station modules send information in 3 one-to-one reception tri- PLC groups of A#, B# and C# of CAN slave stations module difference to be measured；DP
Master station module receives DP slave stations to be measured in main control PLC and sends information with DP slave stations module in A#PLC groups；
The host computer connects main control PLC by netting twine, and testing staff can be by visualization circle write in host computer
Face observation shows the status information of main control PLC and each module in A#, B#, C#PLC group, and opening for program is detected by PC control
Stop.
The application also uses following scheme：
The wind electricity change paddle PLC detection means also includes AC/DC Switching Power Supplies, and the AC/DC Switching Power Supplies are master control
PLC, A#PLC group, B#PLC groups and C#PLC groups provide 24V dc sources.
In DIO modules and A#PLC groups in main control PLC between DIO modules to be measured, in B#PLC groups RTD modules to be measured with
Between variable resistor, connection is realized using the overall connector of cable between SSI modules to be measured and encoder in C#PLC groups.Institute
The main body for stating the overall plug connector of cable is fixed " word " type contact pin, contact pin of installation in perforate on insulating sheet material, insulating sheet material, hole
One end is " word " type metal draw point, is directly plugged on PLC corresponding modules；The contact pin other end welds cable, and cable one end can
The selection small-sized clip of connection or external device, cable entirety connector are completed after connection, by hasp and main control PLC or
Corresponding PLC groups carry out overall fixed.
The transceiver path of communication information between main control PLC and A#PLC groups, B#PLC groups and C#PLC groups is respectively：1. by
To be measured DP slave station module of the DP master station modules into main control PLC in main control PLC；2. by the DP main control modules of main control PLC to A#
The DP slave station modules of PLC groups；3. by the CAN master station modules in main control PLC into B#PLC groups CAN slave stations module to be measured；4. by leading
Control CAN master station modules CAN slave stations module to be measured into C#PLC groups in PLC；5. by 3 CAN slave stations modules to be measured of main control PLC
It is respectively corresponding to the CAN master station modules, the CAN master station modules of B#PLC groups, the CAN master station modules of C#PLC groups of A#PLC groups；Wherein
The communication information includes heartbeat signal.
Disclosed herein as well is a kind of detection side of the wind electricity change paddle PLC based on above-mentioned wind electricity change paddle PLC detection means
Method, the detection method comprises the following steps：
Step 1：Initialization inspection is carried out in 3 minutes in main control PLC, A#PLC groups, B#PLC groups and C#PLC groups after electricity
Survey, the heartbeat signal negated automatically according to the PLC scan periods sent from main control PLC to A#PLC groups, B#PLC groups and C#PLC groups,
The heartbeat signal received is not dealt with directly feed back to main control PLC respectively by each PLC groups for receiving heartbeat signal, works as master control
When more each PLC groups feedback heartbeat signals of PLC have change in 100ms, communication is represented normally, into next step；If
The heartbeat signal that each PLC groups are fed back in 100ms is constant always, then point out communication abnormality, it is necessary to CAN communication cable,
Profibus-DP communication cables, main control PLC, A#PLC groups, B#PLC groups CAN master station modules corresponding with C#PLC groups, CAN from
Stand and re-start initialization detection after module, DP master station modules, DP slave stations module are overhauled, enter next step after communication is normal；
Step 2：Main control PLC to A#PLC groups, B#PLC groups and C#PLC groups while heartbeat signal is sent, and increase is sent
One each PLC scan period, the automatic integer data for Jia 1 was cumulative signal, and each PLC groups are in the heartbeat signal received with tiring out
Main control PLC is directly fed back to after plus signal；Main control PLC by two neighboring periodic heartbeat signal value in relatively each communication path,
Calculate the constant number of times of heartbeat and maximum successive heartbeat not variable period；By on relatively more currently transmitted cumulative signal and each communication path
The cumulative signal value of feedback, it is communication delay to calculate cumulative signal maximum difference；CAN in A#PLC groups, B#PLC groups and C#PLC groups
Master station module detects 3 CAN slave station modules to be measured in correspondence connection main control PLC group respectively, and main control PLC group is to be measured according to 3
The communication data that receives of CAN slave stations module calculate obtain occurring in 3 order circuits maximum successive heartbeat not variable period with it is logical
News delay, when communication delay more than setting alarm threshold value when, then it is assumed that in the order circuit CAN slave stations module to be measured with it is right
Answer that the interaction between the CAN master station modules of PLC groups has flash or communication line has virtual connection, and the order circuit is reported
It is alert；With DP slave station modules to be measured in DP master station modules detection main control PLC group in main control PLC group, main control PLC group is according to be measured
The communication data calculating that DP master station modules are received obtains the maximum successive heartbeat of appearance in this order circuit, and variable period does not prolong with communication
When, when alarm threshold value of the communication delay more than setting, then it is assumed that DP slave stations module to be measured and corresponding master in the order circuit
Interaction between the DP master station modules of control PLC groups there is flash or communication line has virtual connection, and the order circuit is reported
It is alert；With CAN master station modules to be measured, B# and C#PLC groups in CAN slave stations module detection main control PLC group in B#PLC groups and C#PLC groups
It is constant that the communication data calculating received according to CAN slave stations module to be measured obtains the maximum successive heartbeat of appearance in 2 order circuits
Cycle is delayed with communication, when alarm threshold value of the communication delay more than setting, then it is assumed that CAN main websites to be measured in the order circuit
Interacting between module and corresponding B# and the CAN slave station modules of C#PLC groups there is flash or communication line has virtual connection, and to this
Order circuit is alarmed；
Step 3：The output channel of DIO modules in main control PLC and A#PLC groups all will be at set time intervals to connecting
The input channel output 24V signals connect.The input channel of A#PLC groups DIO modules to be measured is received after 24V signals, and the signal is closed
Form into binary code is by DP slave station module feedbacks DP master station modules into main control PLC, if master control DIO module output channels
DIO module input channel reception conditions are inconsistent in output situation and A#PLC groups and inconsistent existence time is more than setting time,
Then the input channel to DIO modules to be measured is alarmed；Main control PLC sends the time interval of setting to A# by DP main websites
DP slave stations in PLC groups, A#PLC groups are according to the time interval received, by the output channels of DIO modules in this group of PLC to master control
The input channel of DIO modules to be measured sends 24V signals in PLC, if master control DIO module input channel reception conditions and A#PLC groups
Middle DIO modules output channel output situation is inconsistent and inconsistent existence time is more than setting time, then to DIO modules to be measured
Output channel is alarmed；
Step 4：Each RTD modules to be measured measure the temperature value of corresponding variable resistance in B#PLC groups, and by the temperature surveyed
Value is sent into main control PLC, and main control PLC compares the temperature in the two neighboring cycle of same passage feedback in same RTD modules in real time
Angle value, when current rear cycle temperature value change is more than temperature change setting value, then it is assumed that the RTD modules have failure, and alarm；
Step 5：Gray's code value that each SSI module capturing and coding devices to be measured are sent in C#PLC groups, and by the Gray of collection
Code value is sent into main control PLC, and main control PLC will compare Gray's code value in the two neighboring cycle of same SSI module feedbacks in real time,
When cycle Gray code value changes are more than Gray code change setting value after current, then it is assumed that the SSI module failures, and alarm.
The application has following beneficial technique effect：
By above detection means and detection method, it can need to classify to becoming oar PLC module according to actually detected,
And specific aim test is completed to similar module is unified, the state-detection of each module can refine to 10ms.PLC module and module it
Between, between module and peripheral hardware (encoder and variable resistor) using the overall connector of cable realize disposable grafting, eliminate PLC
Each passage solution line and the repeated work of wiring.
Brief description of the drawings
Fig. 1 is the wind electricity change paddle PLC structure of the detecting device schematic diagrames of the application；
Fig. 2 is the overall connector top view of cable of the application；
Fig. 3 is the overall connector left view of cable of the application；
Fig. 4 is the module failure detection principle diagram of the application；
Fig. 5 is the wind electricity change paddle PLC of the application detection method schematic flow sheet.
Specific embodiment
With reference to Figure of description, technical scheme is described in further detail.
As shown in figure 1, the wind electricity change paddle PLC detection means of the application present invention, mainly including main control PLC, A#PLC groups, B#
PLC groups, C#PLC groups and host computer, in addition can external variable resistor and encoder auxiliary detection.
(in figure shown in heavy line) is connected with DP communication cables using CAN communication cable between each PLC groups, each PLC is realized
The information interaction of group；Data interaction is carried out by universal serial bus between module and module in each PLC groups.Host computer passes through net
Line connection main control PLC (in figure shown in hollow the arrow icon), and check in the visualization interface for write completion each mould of analysis
Bulk state；Between DIO intermodules, B#PLC group RTD modules and the variable resistor of A#PLC groups and main control PLC, C#PLC group SSI modules
Realized and be connected (in figure shown in dotted line) with the overall connector of cable between encoder.
The detection of the start and stop of detection program, wherein tri- groups of PLC of A#, B#, C# can be controlled in host computer visualization interface
Mode and detection time are operated by testing staff in visualization interface, and unified setting is completed by main control PLC.Visualization
In interface in addition to having main control PLC group information and operation sequence interface, tri- groups of PLC of A#, B#, C# each independent boundaries have also been compiled
Face, testing staff can be observed according to specific detection needs to each module channels to be measured.
Main control PLC, A#PLC groups, B#PLC groups and C#PLC groups configure normal PLC module before testing.Wherein, main control PLC
Configure one group of DIO module, 1 CAN master station module, 3 CAN slave stations modules, 1 DP master station module and 1 DP slave station module；A#
PLC, which is assembled, puts 1 DP slave stations module, 1 CAN master station module and one group of DIO module；B#PLC assemble put 1 CAN slave stations module,
1 CAN master station module and one group of RTD module；C#PLC configures 1 CAN slave stations module, 1 CAN master station module and one group of SSI mould
Block.
To ensure that only existing a part of module in detection accuracy, each PLC groups can be substituted by module to be measured, its complementary modul
Block uses the normal module of acquiescence.During test, following replacement operation can be carried out as needed：By 1 wind electricity change paddle PLC to be measured DP
Slave station module, 1 wind electricity change paddle PLC to be measured CAN master station modules, 3 wind electricity change paddle PLC to be measured CAN slave stations module are distinguished
The original normal 1 DP slave station module of main control PLC, 1 CAN master station module and 3 CAN slave station modules are replaced, are realized to 1
Wind electricity change paddle PLC to be measured DP slave stations module, 1 wind electricity change paddle PLC to be measured CAN master station modules and 3 wind-powered electricity generations to be measured become
The detection of oar PLC CAN slave station modules；By wind electricity change paddle PLC to be measured DIO modules replace that A#PLC group first wifves put it is normal
DIO modules；Wind electricity change paddle PLC to be measured RTD modules are replaced into the normal RTD modules that B#PLC group first wifves put；By wind-powered electricity generation to be measured
The SSI modules for becoming oar PLC replace the normal SSI modules of C#PLC groups Central Plains configuration；
As shown in Figure 2 and Figure 3, it is contemplated that the simplicity of each PLC module wiring, module is realized using the overall connector of cable
Between module, the connection of module and external equipment.The main body of cable entirety plug connector is insulating sheet material, thereon according to PLC moulds
Block passage distribution situation carries out installing fixed " word " type contact pin in perforate, hole.Contact pin one end is " word " type metal draw point, can
Directly it is plugged in PLC module；The contact pin other end welds cable, and the small-sized clip of connection or external device may be selected in cable one end.
Cable entirety connector is completed after connection, is carried out by hasp and PLC groups to be measured overall fixed.
As shown in figure 4, all kinds of change oar PLC modules to be measured replaced according to function and model different grouping be installed on main control PLC,
In A#PLC groups, B#PLC groups and C#PLC groups, detected by respective setting means, it is specific as follows：
Led to the output to be measured for becoming oar DIO modules in the input channel detection A#PLC groups of main control PLC Plays DIO modules
Road, the change frequency of module output signal low and high level to be measured can be set in host computer visualization interface, pass through communication
Cable transmission is into A#PLC groups.If outside the state handoff delay of restriction, detecting DIO modules output situation to be measured and setting
State is different, then alarm can be made to respective channel.
Led to the input to be measured for becoming oar DIO modules in the output channel detection A#PLC groups of main control PLC Plays DIO modules
The form that the 24V signals that each DIO modules input channel is received are combined into binary code is fed back to main control PLC by road, A#PLC groups
In, if module input channel to be measured reception signal is different from master control output signal and outer in state setting delay, lead to corresponding
Make alarm in road.
With change oar RTD modules to be measured in continuous variable resistance detection B#PLC groups, detect that different passages are warm under same resistance
Deviation is spent, and whether same passage temperature in whole detection process occurs saltus step.If interchannel collection value deviation is more than most
There is saltus step in collection value before and after big tolerance or same passage, then alarm is made to respective channel, and record the passage in report
The collection value of detection cycle before and after the alert moment.
With change oar SSI modules to be measured in absolute value encoder detection C#PLC groups, when SSI modules correctly connect encoder
Clock is positive and negative with after the positive negative signal of data, uploading module collection gained Gray's code value to be checked.Testing staff can stand or rotate coding
Device, checks whether gathered Gray's code value occurs exception.Gray code value changes are gathered more than maximum when there are adjacent periods
During permissible value, then alarm is made to the module, and record Gray's code value in cycle before and after change.
The main control PLC sends heartbeat signal and cumulative signal in real time, and remaining each PLC group is straight by both signals of reception
Connect and return to main control PLC.Main control PLC contrasts the adjacent periods pulse rate to reception, is made if heart beat status is constant
Early warning, most long heart beat status invariant time and the constant number of times of heartbeat are counted and show while screening.Main control PLC passes through currently transmitted
The cumulative signal that is returned with each PLC groups of cumulative signal contrasted, be delayed according to the communication in the whole loop of mathematic interpolation so that
Confirm whether each change oar communication module to be measured is normal.
As shown in figure 5, need to carry out module to be measured type classification mark before module detection is carried out, and replacement connects respectively
Enter in each PLC groups.Connected between realizing communication module using CAN and DP communication cables, module is realized using the overall connector of cable
It is connected between intermodule, module and peripheral hardware.After completing mark and being connected, point 5 steps carry out the detection of PLC module to be measured, tool
Body is as described below：
Step 1：Because each module information will be collected by CAN and DP communication buses to master in tri- PLC groups of A#, B#, C#
Control in PLC.Therefore, after after wiring and module installation, will detect first communicated between this 3 PLC groups and main control PLC whether
Normally.A whole set of detection means will carry out initialization detection in 3 minutes to communication quality upon actuation.Main control PLC in this time
The heartbeat signal negated automatically according to the PLC scan periods will be sent to each PLC groups by CAN and DP buses, each PLC groups exist
Receive and received data is directly returned after heartbeat signal.According to the master control of current conventional megawatt-level wind unit and pitch-controlled system
Between communication failure delay in 100ms~200ms, therefore initialization detection time in the range of, the main control PLC of this set detection means
Data to return are checked, if the heartbeat signal that setting is fed back in 100ms is constant always, point out communication different
Often, testing staff is now needed to be confirmed whether it is communication cable or communication module problem.After module to be confirmed or cable problem, respectively
PLC groups need to go up electricity and restart, and initialization detection hereafter will be performed again, it is ensured that be communicated between each PLC groups normal.
After initialization detection terminates, real-time detection-phase will be entered, the test of each module to be checked will be now carried out.Master control
PLC will preserve data and will once be reset before and after the fault value and individual modules failure to each module to be measured.In view of first
During beginningization there is the priority in sequential in artificial maloperation and each PLC groups electrifying startup, and all PLC modules all set independence
Reset function, remove inadvisable failure.
Step 2：After causing to communicate thoroughly interruption between confirming communication module without circuit question or module failure, under progress
The detection of one step communication quality.Now, main control PLC is sending the same of heartbeat signal to A#PLC groups, B#PLC groups and C#PLC groups
When, it is cumulative signal that increase, which sends each PLC scan period automatic integer data for Jia 1, and each PLC groups are in the heart received
Signal is jumped with directly feeding back to main control PLC after cumulative signal.Main control PLC will compare two neighboring in each communication path of analysis in real time
The heartbeat signal of PLC scan periods.If two neighboring periodic heartbeat signal is all 1 or is 0, progress is accumulative, and (this data is the heart
Jump continuous not variable period), until being zeroed out after front and rear periodic heartbeat signal intensity to the continuous not variable period of current heartbeat.
In whole test process, main control PLC can the continuous not variable period of the maximum heartbeat of automatic screening reservation.In detection heartbeat signal simultaneously,
Main control PLC also calculates the cumulative signal that current each passage is sent and the cumulative signal difference (communicating delay time) received, from
It is dynamic to preserve maximum communication delay time.This set detection means is with CAN master station modules in A#PLC groups, B#PLC groups and C#PLC groups point
Corresponding 3 pieces of CAN slave station modules to be measured in main control PLC group Jian Ce not be connected, main control PLC group is received by CAN slave stations module
Communication data calculates the continuous not variable period of maximum heartbeat and maximum communication delay time according to the above method.When the two are most worth greatly
When the alarm threshold value of setting, then it is assumed that CAN slave stations module to be measured has flash with normal CAN master station modules information interaction,
And CAN slave stations module to be measured is alarmed.Similarly, with DP slave stations in DP master station modules detection main control PLC group in main control PLC group
Module, with CAN master station modules to be measured in CAN slave stations module detection main control PLC group in B#PLC groups and C#PLC groups.It is each to be measured above
The continuous not variable period of the current heartbeat of module, Current communications delay time, the continuous not variable period of maximum heartbeat prolong with maximum communication
When the time can all be shown in host computer interface, be easy to testing staff the very first time to obtain related data.
Step 3：After being communicated normally between the main control PLC and each PLC groups that confirm the present apparatus, into next stage test.
Now, the time that the output channel of main control PLC group Plays DIO modules and DIO modules to be measured in A#PLC groups is set according to master control
Interval output 24V signals (this time interval can have tester to be set).A#PLC groups lead to the input of DIO modules to be measured
Road reception condition exports the form that situation is combined into binary code with output channel, and master is uploaded to by CAN main websites and DP slave stations
Control in PLC correspondence link blocks.Main control PLC, which will be assembled originally, puts the input of Plays DIO modules with output channel transmitting-receiving situation with connecing
A#PLC groups upload data are received to be checked.If master control DIO modules output channel exports situation and inputted with DIO modules in A#PLC groups
Channel reception situation is inconsistent and inconsistent more than 6 PLC scan periods (60ms) of existence time, then to DIO modules pair to be measured
The input channel answered is alarmed；If master control DIO module input channel reception conditions and DIO module output channels in A#PLC groups
Output situation is inconsistent and inconsistent more than 6 PLC scan periods (60ms) of existence time, then corresponding to DIO modules to be measured
Output channel is alarmed.When there is alarm in the passage of DIO modules to be measured, correspondence DIO to be measured in host computer visualization interface
Module channels correspondence indicator lamp will be changed into red from green.
Step 4：B#PLC groups by RTD modules collecting temperature value to be measured be converted into after integer variable form by CAN main websites with
Slave station is uploaded in main control PLC.Main control PLC compares the temperature in the two neighboring cycle of same passage feedback in same RTD modules in real time
Angle value, when current rear cycle temperature value change is more than temperature change setting value, then it is assumed that the RTD modules have failure, and alarm.
In the current collecting temperature value of each passage of RTD modules to be measured, whole test process it is maximum with minimum temperature value, front and rear cycle most
Big temperature gap is shown all in host computer interface.When module to be measured some passage is alarmed, host computer interface correspondence is treated
Surveying module channels lamp will be changed into red from green.
Step 5：：Gray's code value that each SSI module capturing and coding devices to be measured are sent in C#PLC groups, and by the lattice of collection
Thunder code value is sent into main control PLC by CAN main websites and slave station, and main control PLC will compare the adjacent of same SSI module feedbacks in real time
Gray's code value in two cycles.When cycle Gray code value changes are more than given threshold after current, then it is assumed that the SSI module failures,
And alarm.Gray's code value is shown all in host computer interface before and after the current collection Gray code values of SSI modules to be measured, saltus step.When
When module to be measured is alarmed, host computer interface correspondence module status lamp to be measured will be changed into red from green.
This detection means will show total detection time in host computer interface, main when any module to be measured breaks down
Control PLC will automatically save fault moment and the communication heart beat status and communication delay time of front and rear a cycle, be integrated with this
The reason for judgement is broken down.
Claims (5)
1. a kind of wind electricity change paddle PLC detection means, including main control PLC, A#PLC groups, B#PLC groups, C#PLC groups, host computer, are used for
Realize 1 DP slave stations module to wind electricity change paddle PLC to be measured, 1 CAN master station modules, 3 CAN slave stations modules, one group of DIO mould
The detection of block, one group of RTD module and one group of SSI module；It is characterized in that：
The main control PLC, A#PLC groups, B#PLC groups and C#PLC groups configure normal PLC module before testing；
Wherein, the main control PLC configures one group of DIO modules, 1 CAN master station modules, 3 CAN slave stations modules, 1 DP main websites mould
Block and 1 DP slave station module；
The A#PLC, which is assembled, puts 1 DP slave stations module, 1 CAN master station module and one group of DIO module；
The B#PLC, which is assembled, puts 1 CAN slave stations module, 1 CAN master station module and one group of RTD module；
The C#PLC, which is assembled, puts 1 CAN slave stations module, 1 CAN master station module and one group of SSI module；
By 1 wind electricity change paddle PLC to be measured DP slave stations module, 1 wind electricity change paddle PLC to be measured CAN master station modules, 3 it is to be measured
Wind electricity change paddle PLC CAN slave stations module replaces the original normal 1 DP slave station module of main control PLC, 1 CAN master station module respectively
And 3 CAN slave station modules, realize wind electricity change paddle PLC to be measured to 1 DP slave stations module, 1 wind electricity change paddle PLC to be measured
The detection of CAN master station modules and 3 wind electricity change paddle PLC to be measured CAN slave station modules；
Wind electricity change paddle PLC to be measured DIO modules are replaced into the normal DIO modules that A#PLC group first wifves put；
Wind electricity change paddle PLC to be measured RTD modules are replaced into the normal RTD modules that B#PLC group first wifves put；
Wind electricity change paddle PLC to be measured SSI modules are replaced to the normal SSI modules of C#PLC groups Central Plains configuration；
3 CAN slave stations modules to be measured in the main control PLC are connected respectively A#PLC groups, B# by CAN communication line
DP slave stations module in PLC groups, the CAN master station modules of C#PLC groups, A#PLC groups is connected to by Profibus-DP communication cables
In main control PLC in DP master station modules, the CAN slave station modules in CAN slave stations module and C#PLC groups in B#PLC groups pass through
CAN communication cable is connected in CAN master station modules to be measured in main control PLC；
Data interaction is carried out by universal serial bus between module and module in each PLC groups；
DIO modules in the main control PLC are connected with DIO modules to be measured in A#PLC groups by the way that the overall plug-in unit of cable is corresponding, i.e.,
The input channel of DIO modules in main control PLC is correspondingly connected to the DIO in DIO module output channels to be detected, main control PLC
The output channel of module is correspondingly connected to DIO module input channels to be detected；
RTD modules to be measured distinguish external variable resistor in B#PLC groups；
SSI modules to be measured distinguish external encoder in C#PLC groups；
The unified B# that receives of CAN master station modules to be measured in main control PLC uploads information with CAN slave stations module in C#PLC groups；3
CAN master station modules send information in one-to-one reception tri- PLC groups of A#, B# and C# of CAN slave stations module difference to be measured；DP main websites
Module receives DP slave stations to be measured in main control PLC and sends information with DP slave stations module in A#PLC groups；
The host computer connects main control PLC by netting twine, and testing staff can be seen by the visualization interface write in host computer
The status information for showing main control PLC and each module in A#, B#, C#PLC group is surveyed, the start and stop of program are detected by PC control.
2. wind electricity change paddle PLC detection means according to claim 1, it is characterised in that：
The wind electricity change paddle PLC detection means also includes AC/DC Switching Power Supplies, and the AC/DC Switching Power Supplies are main control PLC, A#
PLC groups, B#PLC groups and C#PLC groups provide 24V dc sources.
3. wind electricity change paddle PLC detection means according to claim 1, it is characterised in that：
In DIO modules and A#PLC groups in main control PLC between DIO modules to be measured, in B#PLC groups RTD modules to be measured with it is variable
Between resistance, connection is realized using the overall connector of cable between SSI modules to be measured and encoder in C#PLC groups；The line
The main body of cable entirety plug connector is fixed " word " type contact pin of installation, contact pin one end in perforate on insulating sheet material, insulating sheet material, hole
For " word " type metal draw point, directly it is plugged on PLC corresponding modules；The contact pin other end welds cable, and cable one end may be selected
Small-sized clip or external device are connected, cable entirety connector is completed after connection, passes through hasp and main control PLC or corresponding
PLC groups carry out it is overall fixed.
4. wind electricity change paddle PLC detection means according to claim 1, it is characterised in that：
The transceiver path of communication information between main control PLC and A#PLC groups, B#PLC groups and C#PLC groups is respectively：1. by master control
To be measured DP slave station module of the DP master station modules into main control PLC in PLC；2. by the DP main control modules of main control PLC to A#PLC groups
DP slave station modules；3. by the CAN master station modules in main control PLC into B#PLC groups CAN slave stations module to be measured；4. by main control PLC
Middle CAN master station modules CAN slave stations module to be measured into C#PLC groups；5. it is right respectively by 3 CAN slave stations modules to be measured of main control PLC
Should to A#PLC groups CAN master station modules, the CAN master station modules of B#PLC groups, the CAN master station modules of C#PLC groups；It is wherein described logical
Interrogating information includes heartbeat signal.
5. a kind of wind electricity change paddle PLC of the wind electricity change paddle PLC detection means based on described in claim 1-4 detection method, institute
Detection method is stated to comprise the following steps：
Step 1：Initialization detection is carried out in 3 minutes in main control PLC, A#PLC groups, B#PLC groups and C#PLC groups after electricity, by
Main control PLC sends the heartbeat signal negated automatically according to the PLC scan periods to A#PLC groups, B#PLC groups and C#PLC groups, receives
Each PLC groups of heartbeat signal, which respectively do not deal with the heartbeat signal received, directly feeds back to main control PLC, when main control PLC ratio
When more each PLC groups feedback heartbeat signal has change in 100ms, communication is represented normally, into next step；If in 100ms
The heartbeat signal that interior each PLC groups are fed back is constant always, then points out communication abnormality, it is necessary to CAN communication cable, Profibus-
DP communication cables, main control PLC, A#PLC groups, B#PLC groups CAN master station modules corresponding with C#PLC groups, CAN slave stations module, DP
Initialization detection is re-started after master station module, the maintenance of DP slave stations module, enters next step after communication is normal；
Step 2：Main control PLC to A#PLC groups, B#PLC groups and C#PLC groups while heartbeat signal is sent, and increase sends one
Each PLC scan periods automatic integer data for Jia 1 is cumulative signal, and each PLC groups are in the heartbeat signal received and cumulative letter
Main control PLC is directly fed back to after number；Main control PLC is calculated by two neighboring periodic heartbeat signal value in relatively more each communication path
The constant number of times of heartbeat and maximum successive heartbeat not variable period；By relatively more currently transmitted cumulative signal with being fed back on each communication path
Cumulative signal value, calculate cumulative signal maximum difference be communication delay；A#PLC groups, B#PLC groups and C#PLC Zu Zhong CAN main websites
Module detects 3 CAN slave station modules to be measured in correspondence connection main control PLC group respectively, and main control PLC group is according to 3 CAN to be measured
The communication data calculating that slave station module is received obtains the maximum successive heartbeat of appearance in 3 order circuits, and variable period does not prolong with communication
When, when communication delay more than setting alarm threshold value when, then it is assumed that in the order circuit CAN slave stations module to be measured with it is corresponding
There is flash in the interaction between the CAN master station modules of PLC groups or communication line has virtual connection, and the order circuit is reported
It is alert；With DP slave station modules to be measured in DP master station modules detection main control PLC group in main control PLC group, main control PLC group is according to be measured
The communication data calculating that DP master station modules are received obtains the maximum successive heartbeat of appearance in this order circuit, and variable period does not prolong with communication
When, when alarm threshold value of the communication delay more than setting, then it is assumed that DP slave stations module to be measured and corresponding master in the order circuit
Interaction between the DP master station modules of control PLC groups there is flash or communication line has virtual connection, and the order circuit is reported
It is alert；With CAN master station modules to be measured, B# and C#PLC groups in CAN slave stations module detection main control PLC group in B#PLC groups and C#PLC groups
It is constant that the communication data calculating received according to CAN slave stations module to be measured obtains the maximum successive heartbeat of appearance in 2 order circuits
Cycle is delayed with communication, when alarm threshold value of the communication delay more than setting, then it is assumed that CAN main websites to be measured in the order circuit
Interacting between module and corresponding B# and the CAN slave station modules of C#PLC groups there is flash or communication line has virtual connection, and to this
Order circuit is alarmed；
Step 3：The output channels of DIO modules in main control PLC and A#PLC groups is all by set time intervals to being connected
Input channel exports 24V signals, and the input channel of A#PLC groups DIO modules to be measured is received after 24V signals, and the signal is synthesized into two
The form of ary codes is by DP slave station module feedbacks DP master station modules into main control PLC, if master control DIO modules output channel is exported
DIO module input channel reception conditions are inconsistent in situation and A#PLC groups and inconsistent existence time is more than setting time, then right
The input channel of DIO modules to be measured is alarmed；Main control PLC sends the time interval of setting to A#PLC groups by DP main websites
Middle DP slave stations, A#PLC groups are according to the time interval received, by the output channel of DIO modules in this group of PLC into main control PLC
The input channel of DIO modules to be measured sends 24V signals, if master control DIO module input channel reception conditions and DIO in A#PLC groups
Module output channel output situation is inconsistent and inconsistent existence time is more than setting time, then to the output of DIO modules to be measured
Passage is alarmed；
Step 4：Each RTD modules to be measured measure the temperature value of corresponding variable resistance in B#PLC groups, and the temperature value surveyed is sent out
Deliver in main control PLC, main control PLC compares the temperature value in the two neighboring cycle of same passage feedback in same RTD modules in real time,
When the change of cycle temperature value is more than temperature change setting value after current, then it is assumed that the RTD modules have failure, and alarm；
Step 5：Gray's code value that each SSI module capturing and coding devices to be measured are sent in C#PLC groups, and by Gray's code value of collection
Send into main control PLC, main control PLC will compare Gray's code value in the two neighboring cycle of same SSI module feedbacks in real time, currently
When cycle Gray code value changes are more than Gray code change setting value afterwards, then it is assumed that the SSI module failures, and alarm.
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| CN105404284B (en) * | 2015-12-15 | 2018-07-27 | 中国电子信息产业集团有限公司第六研究所 | A kind of cross-platform PLC products tooling test system and its test method based on QT |
| CN107966664A (en) * | 2016-10-19 | 2018-04-27 | 惠州市德赛电池有限公司 | A kind of multiple channel test equipment mistake-proof control method and device |
| CN107589734A (en) * | 2017-08-24 | 2018-01-16 | 固安华电天仁控制设备有限公司 | A kind of wind electricity change paddle controller IO fastener method of testings |
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| CN201607643U (en) * | 2010-01-29 | 2010-10-13 | 国电联合动力技术(连云港)有限公司 | Testing device for variable pitch control system of wind generating set |
| CN202057733U (en) * | 2011-04-02 | 2011-11-30 | 迅捷卓越传动系统科技(北京)有限责任公司 | Super capacitor group state monitoring system of variable propeller pitch system |
| CN103616890B (en) * | 2013-12-09 | 2016-05-11 | 北京天源科创风电技术有限责任公司 | The detection method of a kind of times of good fortune PLC module |
| CN104181916B (en) * | 2014-08-27 | 2017-02-22 | 北京天源科创风电技术有限责任公司 | Method for detecting spare parts to be detected of wind turbine generator main control systems |
| CN204116941U (en) * | 2014-08-27 | 2015-01-21 | 北京天源科创风电技术有限责任公司 | The pick-up unit of a kind of Wind turbines master control system spare part to be checked |
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