CN107168287A - A kind of PLC failures based on PLC transformer cooler control systems are met an urgent need module - Google Patents
A kind of PLC failures based on PLC transformer cooler control systems are met an urgent need module Download PDFInfo
- Publication number
- CN107168287A CN107168287A CN201710385601.2A CN201710385601A CN107168287A CN 107168287 A CN107168287 A CN 107168287A CN 201710385601 A CN201710385601 A CN 201710385601A CN 107168287 A CN107168287 A CN 107168287A
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- China
- Prior art keywords
- plc
- terminal
- cooler
- auxiliary reclay
- contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000005284 excitation Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 8
- 230000003111 delayed effect Effects 0.000 description 5
- 230000001934 delay Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- 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
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
A kind of PLC failures based on PLC transformer cooler control systems are met an urgent need module, including module major loop, input circuit and output loop；Described module major loop includes the common port XT1 being sequentially connected, put into operation the auxiliary contact of handle, auxiliary reclay KA01 normally opened contact, auxiliary reclay KP01 normally-closed contact, run indicator LR, common port XT2 and the auxiliary reclay KA02 branch road in parallel with run indicator LR, time relay KT01 branch roads, time relay KT01 timing closings contact concatenates branch road with time relay KT02 ..., and the timing closing contacts of time relay KT0n 1 concatenate branch road with time relay KT0n；Advantage is when solving PLC failures or dead electricity, the problem of cooler full cut-off, it is to avoid the risk of transformer forced outage.
Description
Technical field
The present invention relates to some control field, more particularly to transformer cooler control field, specifically refer to one kind and be based on
The emergent module of the PLC failures of PLC transformer cooler control systems.
Background technology
With the extensive use of PLC Programmable logical controllers, transformer cooler control system is also largely controlled using PLC
Device controls the operating of whole system as the core of system.Although the reliability of present PLC is very high, but still
Faulty possibility, secondary circuit failure causes the possibility of its dead electricity higher, once failure, will cause cooler control system
Failure, cooler full cut-off.And if important transformer upper strata oil temperature in cooler full cut-off is not up to 75 DEG C and can run one
Hour, operation 20 minutes is only capable of after reaching 75 DEG C, if handling failure transformer forced outage can not will be caused in time.
At present, most cooler Control System Design thinkings based on PLC are by input circuit collection main transformer operation shape
State, oil temperature, around information such as temperature, corresponding contact is exported after CPU internal logic computings and starts or stops cooler and sends alarm
Etc. information, shortcoming is once PLC failures or dead electricity, without corresponding output, cooler is stopped, it is impossible to alarm and tripping operation.
If failing to find expensive damage equipment in time.
The content of the invention
The purpose of the present invention is that the shortcoming for overcoming above-mentioned prior art is controlled there is provided a kind of module and the PLC normally run
Device output loop is in parallel, after PLC failures or dead electricity, can be run by module startup cooler, after PLC recovers normally certainly
The emergent module of PLC failures of the dynamic former loop operation of switchback.
The present invention is achieved through the following technical solutions：
A kind of PLC failures based on PLC transformer cooler control systems are met an urgent need module, including module major loop, input
Loop and output loop；Described module major loop include be sequentially connected common port XD1, the auxiliary contact for the handle that puts into operation, in
Between relay KA01 normally opened contact, auxiliary reclay KP01 normally-closed contact, run indicator LR, common port XD2 and with fortune
The auxiliary reclay KA02 branch roads of row indicator lamp LR parallel connections, time relay KT01 branch roads, time relay KT01 timing closings
Contact concatenates branch road with time relay KT02 ... time relay KT0n-1 timing closings contact and time relay KT0n
Concatenate branch road；Described common port XD1, XD2 is connected with power supply common port positive pole, negative pole respectively；Described input circuit includes
Running state of transformer loop and PLC running statuses loop, described running state of transformer loop include the end being sequentially connected
In sub- XR1, auxiliary reclay KA01, terminal XR2, described terminal XR1, XR2 access transformer running monitoring loop；Described
PLC running statuses loop includes being sequentially connected terminal XR3, auxiliary reclay KP01 and terminal XR4；Described terminal XR3, XR4
It is respectively connected to the PLC running statuses output cathode and described power supply common port negative pole of PLC output modules；Described output loop
It is cold including first group of cooler starting-up later time, second group of cooler starting-up later time, the 3rd group of cooler starting-up later time ... N group
But device starting-up later time；First group of described cooler starting-up later time is normally opened including being sequentially connected terminal XT1, auxiliary reclay KA02
Contact, terminal XT01；Described terminal XT01 is connected with described power supply common port positive pole, described terminal XT1 with it is middle after
Normally opened contact closure is corresponded to respectively after electrical equipment KM1, described auxiliary reclay KM1 excitations starts cooler M1；Described second
Group cooler starting-up later time includes being sequentially connected terminal XT2, time relay KT01 timing closings contact, terminal XT02；It is described
Terminal XT02 be connected with described power supply common port positive pole, described terminal XT2 and auxiliary reclay KM2, described centre
Normally opened contact closure is corresponded to respectively after relay KM2 excitations starts cooler M2；N+1 group coolers starting-up later time is included successively
Connection terminal XTn, time relay KT0n-1 timing closings contact, terminal XT0n；Described terminal XT0n and described power supply
Common port positive pole is connected, described terminal XTn and auxiliary reclay KMn, normally opened after described auxiliary reclay KM2 excitations to touch
Point closure is corresponded to respectively starts cooler Mn.
As the improvement of such scheme, described time relay KT01, KT02, KT03 ... KT0n time delay interval
For 3-10S.
As the improvement of such scheme, the auxiliary contact of the described handle that puts into operation include input state, exit state, described
Input state representation auxiliary contact connect.
" put into operation handle " is connected in " input " state representation Loop Contacts in major loop in such scheme, and KA01 is normally opened to be touched
Point closure indication transformer is in the state of putting into operation, and KP01 normally-closed contacts, which are connected, represents PLC failure, and indicator lamp branch road is used to refer to
Show that loop is connected, KA02 branch roads are used to start first group of cooler not being delayed, and KT01 branch roads are used for second group of needs of startup and prolonged
When cooler, the branch road that KT01 timing closings contact is connected with KT02 is used for cooler (its for starting the delay of the 3rd group of needs
Delay is delayed again on the basis of KT01 delays) ... the branch road that KT0n-1 timing closings contact is connected with KT0n is used to start
N-th group needs the cooler being delayed (it, which is delayed, is delayed again on the basis of KT0n-1 delays).Running state of transformer loop
For judging that transformer normally opened contact after the state of putting into operation, KA01 excitations is closed.When PLC is normally run, take in output module
One terminal persistently exports positive electricity, makes auxiliary reclay KA01 excitations, and KA01 normally-closed contacts are maintained at open mode；Once PLC
Failure or dead electricity, output module can not export positive electricity, and KA01 losss of excitation, KA01 normally-closed contacts are maintained at closure state.
The invention has the advantages that：
When the 1st, solving PLC failures or dead electricity, the problem of cooler full cut-off, it is to avoid the risk of transformer forced outage.
2nd, modularization, it is simple in construction, make to install and use more convenient, simple operation.
3rd, cost is low：The redundancy or handoff functionality of PLC control system, this programme are realized relative to one CPU of increase
Reduce improvement expenses and workload.
Brief description of the drawings
Fig. 1 is the structural representation of the emergent module of PLC failures of the present invention.
Fig. 2 is the use state structural representation of the emergent module of PLC failures of the present invention.
Embodiment
Embodiment
As shown in Figure 1 and Figure 2, a kind of emergent module of PLC failures based on PLC transformer cooler control systems, including mould
Block major loop, input circuit and output loop；Described module major loop include be sequentially connected common port XD1, put into operation handle
Auxiliary contact, auxiliary reclay KA01 normally opened contact, auxiliary reclay KP01 normally-closed contact, run indicator LR, public affairs
XD2 and the auxiliary reclay KA02 branch road in parallel with run indicator LR, time relay KT01 branch roads, the time relay are held altogether
KT01 timing closings contact concatenates branch road with time relay KT02 ... time relay KT0n-1 timing closings contact and when
Between relay KT0n concatenation branch road；It is described common port XD1, XD2 power supply common port positive poles respectively with PLC control system, negative
Pole is connected；Described input circuit includes running state of transformer loop and PLC running statuses loop, described transformer station high-voltage side bus
State loop includes the terminal XR1, auxiliary reclay KA01, terminal XR2 being sequentially connected, and described terminal XR1, XR2 access becomes
In depressor operation monitoring loop；Described PLC running statuses loop include be sequentially connected terminal XR3, auxiliary reclay KP01 and
Terminal XR4；Described terminal XR3, XR4 is respectively connected to the PLC running statuses output cathode and described power supply of PLC output modules
Common port negative pole；Described output loop include first group of cooler starting-up later time, second group of cooler starting-up later time, the 3rd group
Cooler starting-up later time ... N group cooler starting-up later times；First group of described cooler starting-up later time includes being sequentially connected
Terminal XT1, auxiliary reclay KA02 normally opened contacts, terminal XT01；Described terminal XT01 and described power supply common port positive pole
Normally opened contact closure is right respectively after connection, described terminal XT1 and auxiliary reclay KM1, described auxiliary reclay KM1 excitations
Cooler M1 should be started；Second group of described cooler starting-up later time prolongs including being sequentially connected terminal XT2, time relay KT01
When closure contact, terminal XT02；Described terminal XT02 is connected with described power supply common port positive pole, described terminal XT2 with
Normally opened contact closure is corresponded to respectively after auxiliary reclay KM2, described auxiliary reclay KM2 excitations starts cooler M2；N+1
Group cooler starting-up later time includes being sequentially connected terminal XTn, time relay KT0n-1 timing closings contact, terminal XT0n；Institute
The terminal XT0n stated is connected with described power supply common port positive pole, described terminal XTn and auxiliary reclay KMn, it is described in
Between after relay KMn excitations normally opened contact closure correspond to start cooler Mn respectively.Described time relay KT01, KT02,
KT03 ... KT0n time delay interval is 3-10S.The auxiliary contact of the described handle that puts into operation include input state, exit state,
Described input state representation auxiliary contact are connected.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and the embodiment simultaneously is not used to limit this hair
Bright the scope of the claims, all equivalence enforcements or change without departing from carried out by the present invention are intended to be limited solely by the scope of the claims of this case.
Claims (3)
- The module 1. a kind of PLC failures based on PLC transformer cooler control systems are met an urgent need, it is characterised in that including module master Loop, input circuit and output loop；Described module major loop include the common port XD1 being sequentially connected, the handle that puts into operation it is auxiliary Help contact, auxiliary reclay KA01 normally opened contact, auxiliary reclay KP01 normally-closed contact, run indicator LR, common port XD2 and the auxiliary reclay KA02 branch road in parallel with run indicator LR, time relay KT01 branch roads, time relay KT01 Timing closing contact concatenates branch road with time relay KT02 ... time relay KT0n-1 timing closings contact and time after Electrical equipment KT0n concatenates branch road；Described common port XD1, XD2 is connected with power supply common port positive pole, negative pole respectively；Described input circuit includes running state of transformer loop and PLC running statuses loop, described transformer station high-voltage side bus shape State loop includes the terminal XR1, auxiliary reclay KA01, terminal XR2, described terminal XR1, XR2 access transformation being sequentially connected In device operation monitoring loop；Described PLC running statuses loop includes being sequentially connected terminal XR3, auxiliary reclay KP01 and end Sub- XR4；Described terminal XR3, XR4 is respectively connected to the PLC running statuses output cathode and described power supply public affairs of PLC output modules Negative pole is held altogether；Described output loop includes first group of cooler starting-up later time, second group of cooler starting-up later time, the 3rd group of cooler Starting-up later time ... N group cooler starting-up later times；First group of described cooler starting-up later time includes being sequentially connected terminal XT1, auxiliary reclay KA02 normally opened contacts, terminal XT01；Described terminal XT01 is connected with described power supply common port positive pole, Normally opened contact closure is corresponded to respectively after described terminal XT1 and auxiliary reclay KM1, described auxiliary reclay KM1 excitations opens Dynamic cooler M1；Second group of described cooler starting-up later time is closed including being sequentially connected terminal XT2, the time relay KT01 delay Conjunction contact, terminal XT02；Described terminal XT02 is connected with described power supply common port positive pole, described terminal XT2 and centre Normally opened contact closure is corresponded to respectively after relay KM2, described auxiliary reclay KM2 excitations starts cooler M2；N+1 groups are cold But device starting-up later time includes being sequentially connected terminal XTn, time relay KT0n-1 timing closings contact, terminal XT0n；Described Terminal XT0n is connected with described power supply common port positive pole, described terminal XTn and auxiliary reclay KMn, described centre after Normally opened contact closure is corresponded to respectively after electrical equipment KMn excitations starts cooler Mn.
- The module 2. a kind of PLC failures based on PLC transformer cooler control systems according to claim 1 are met an urgent need, its Be characterised by, described time relay KT01, KT02, KT03 ... KT0n time delay interval is 3-10S.
- The module 3. a kind of PLC failures based on PLC transformer cooler control systems according to claim 1 are met an urgent need, its It is characterised by, the auxiliary contact of the described handle that puts into operation include input state, exit state, described input state representation auxiliary Contacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385601.2A CN107168287A (en) | 2017-05-26 | 2017-05-26 | A kind of PLC failures based on PLC transformer cooler control systems are met an urgent need module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385601.2A CN107168287A (en) | 2017-05-26 | 2017-05-26 | A kind of PLC failures based on PLC transformer cooler control systems are met an urgent need module |
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| CN107168287A true CN107168287A (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710385601.2A Pending CN107168287A (en) | 2017-05-26 | 2017-05-26 | A kind of PLC failures based on PLC transformer cooler control systems are met an urgent need module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161955A (en) * | 2019-05-31 | 2019-08-23 | 广东电网有限责任公司 | A kind of transformer Cooling case PLC failure emergency processing method and normally opened relay |
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