CN206332632U - A kind of control rod power-supply system protection and control system - Google Patents
A kind of control rod power-supply system protection and control system Download PDFInfo
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- CN206332632U CN206332632U CN201620849234.8U CN201620849234U CN206332632U CN 206332632 U CN206332632 U CN 206332632U CN 201620849234 U CN201620849234 U CN 201620849234U CN 206332632 U CN206332632 U CN 206332632U
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- protection
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Abstract
A kind of protection and control system for control rod power-supply system; protection device including control rod power-supply system, the signal provided according to protection device control the control device of generator control switches, output equipment to protect the PLC device of control command and control the generator control switches of generator start and stop, and the protection and control system also include hardwire protective loop, protection circuit automatically switched to interlocking controlling switch, degaussing switch control device and the underfrequency protection switch controlling device of hardwire protective loop；The protection device includes differential protection for generator device, reverse-power in the generator protection device, generator loss-of-excitation protection device device, generator overcurrent protective device and underfrequency protection switch；Cause underfrequency protection malfunction logic by optimizing the tripping operation of PT air switches, also improve the stability of ram system operation.
Description
Technical field
The utility model be related to power-supply system protection and control system, more particularly to a kind of control rod power-supply system protection and
Control system.
Background technology
The task of nuclear power station control rod power-supply system (RAM) is exactly to be powered to CRDM, control rod power supply system
System plays vital effect in nuclear power station operation.Existing RAM is made up of bis- sets of supply units of Set1, Set2, is filled respectively
In three racks.All protections of ram system and control logic are exported by PLC device 103.If Set1 or Set2PLC
Device 103 is broken down, and will cause Set1 or Set2 generator outlet switch trips, and the row generator unprotect is continued to run with,
The fault-signal of PLC device 103 not on send DCS, cause master control operator not monitor, and under PLC fault conditions, it is impossible to hand
Dynamic stoppage in transit RAM generating sets carry out troubleshooting.If common portion PLC device 103 breaks down, generator low frequency will be caused to protect
Shield failure.When RAM breaks down within the field switch combined floodgate 5s of existing RAM generators, protection act can not tripping excitation open
The design defect of pass.Degaussing switch point position position signalling is regard as the necessity for triggering field switch trip signal in former PLC logics
Condition, therefore within 403JA combined floodgates 5s, the order of tripping field switch can not be sent by 403JA closing positions signal block,
Rotor loop can not demagnetization.
Existing ram system underfrequency protection switchs sample motor exit potential by PT air, if PT air switch failures
Tripping operation, underfrequency protection loses voltage sample, and underfrequency protection tripping operation outlet will cause reactor control rod power supply out of hand, lead
Chaser is caused to jump heap.
Utility model content
Protected for the deficiency that existing ram system is present there is provided a kind of control rod power-supply system and control system, to core
Power plant's RAM save and Control System Design are optimized, increase independent protection hardwire trip(ping) circuit, manual shut-down loop with
And the optimization logic of PLC device 103, the reliability and safety of RAM power-supply systems is improved, above-mentioned the asking of prior art presence is solved
Topic.
The technical scheme that the utility model solves the above problems there is provided a kind of protection for control rod power-supply system
And control system, including the protection device including control rod power-supply system, the signal that is provided according to protection device control generator
Control device, the PLC device of output equipment protection control command and the generator control for controlling generator start and stop of controlling switch
System switch, the protection and control system also include hardwire protective loop, protection circuit are automatically switched to hardwire protection
Interlocking controlling switch, excitation switch controlling device and the underfrequency protection switch controlling device in loop；
The protection device includes differential protection for generator device, reverse-power in the generator protection device, loss of exicitation and protected
Protection unit, generator overcurrent protective device and underfrequency protection switch.
The hardwire protective loop include generator and motor hand control switch, the access of hardwire protective loop after
Electric installation, generator underfrequency protection controlling switch and generator high level controlling switch.
Generator and the motor hand control switch is used to carry out the circuit when using hardwire protective loop
Start-up and shut-down control, and then control generator control switches；The hardwire protective loop access relay system is used in protection device
When ineffective, the hardwire protective loop Access Control circuit is protected to generator；The generator low frequency is protected
Protecting controlling switch is used to trip after it can not sample to PT air switches, and generator is protected；The generator is high
Level control switch is after access hardwire protective loop so that generator control switches could trip in high level state.
Generator and the motor hand control switch and the hardwire protective loop access relay system are connected company
Connect, the generator underfrequency protection controlling switch is connected in series in the hardwire protective loop access relay system and generator
The centre of high level controlling switch, the generator high level controlling switch is connected in series in loop with the interlocking controlling switch
In.
The interlocking controlling switch is used to switch the protection device and the hardwire protective loop, is lost in protection device
When going effect, enable hardwire protective loop and generator is protected.
The degaussing switch control device is connected with generator excitation switch, for being opened after generator excitation switch separating brake
Dynamic degaussing switch, carries out demagnetization to generator rapidly.
It is low to start that the underfrequency protection switch controlling device is used for the transmission PLC signals when confirming that PT air switches are intact
Frequency protection switch.
Implement protection and the control system of the utility model control rod power-supply system, its advantage is：Due in RAM systems
Hardwire trip(ping) circuit is added in system, the hardwire loop of trip protection is automatically engaged, and ram system can be continued to run with；Pass through
The independent hardwire of increase is stopped transport loop manually, in order to carry out troubleshooting in time.The utility model is also generated electricity by optimizing
Machine excitation and demagnetization logic, prevent that rotor loop from burning；Cause underfrequency protection malfunction logic by optimizing the tripping operation of PT air switches,
Also improve the stability of ram system operation.The protection of the control rod power-supply system provided using the utility model and control system
System, can be optimized to nuclear power plant's ram system, complete due to optimizing hardwire trip(ping) circuit and the PLC logics of ram system
Control and the design protection of ram system have been apt to it, so as to greatly improve the security and reliability of ram system operation.
Brief description of the drawings
Fig. 1 is the protection of control rod power-supply system and the control system for the nuclear power station that the utility model is related to；
Fig. 2 is the ram system logic connection diagram for illustrating prior art；
Fig. 3 is to illustrate the ram system logic connection diagram after the improvement of the utility model embodiment；
Fig. 4 is to illustrate hardwire protective loop and protection device logic connection diagram in the utility model；
Fig. 5 is to illustrate protection device composition schematic diagram in the utility model embodiment；
Fig. 6 is to illustrate field suppression protection logical schematic in the utility model embodiment；
Fig. 7 is the schematic diagram for illustrating RAM excitations and magnetism elimination circuit in the prior art；
Fig. 8 is the schematic diagram for illustrating RAM excitations and magnetism elimination circuit in the utility model embodiment；
Fig. 9 is the schematic diagram for illustrating underfrequency protection logic in the prior art；
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit the utility model.
Fig. 1 is the protection of control rod power-supply system and control system (the abbreviation RAM systems for the nuclear power station that the utility model is related to
System) simplified diagram, ram system be applied to bis- sets of supply units of Set1, Set2, as an example, ram system can divide
Zhuan not be in three racks.Controls and protection device of first rack RAM001TB built with first set supply unit Set1
101, protection device 101 includes differential protection for generator device 401, reverse-power in the generator protection device 402, loss of exicitation
Protection device 403, generator overcurrent protective device 404 and underfrequency protection switch 405.3rd rack RAM003TB built with
Second set of supply unit Set2 control and protection device 101, including the protection of differential protection for generator, reverse-power in the generator, hair
The functional units such as over current of motor protection, generator loss-of-excitation protection.Second rack RAM002TB is built with two sets of supply units
Set1, Set2 shared disk control and protection device 101, the unit such as including underfrequency protection.Protection and control system normal work
When, two sets of supply unit Set1, Set2 synchronous concatenation operations.When breaking down, protection is provided by PLC device 103 and is controlled.
Fig. 2 is the ram system logic connection diagram for illustrating prior art；As shown in Fig. 2 in RAM control and protection
During, it is directed to protection device 101, control device 102, PLC device 103 and generator control switches 104.Prior art
All protections of ram system and control logic are exported by PLC device 103.If any one in supply unit Set1 or Set2
Individual PLC device 103 breaks down, and will cause Set1 or Set2 generator outlet switch trips, and the row generator unprotect continues
Operation, the fault-signal of PLC device 103 not on send DCS, cause master control operator not monitor, and under PLC fault conditions,
The RAM generating sets that can not stop transport manually carry out troubleshooting.If common portion PLC device 103 breaks down, generator will be caused
Underfrequency protection fails.
Fig. 3 is to illustrate the ram system logic connection diagram after the improvement of the utility model embodiment, in protection device
101st, hardwire protective loop 105 is added between control device 102 and generator control switches 104, it is ensured that in PLC device
Under 103 fault conditions, the hardwire protective loop 105 of trip protection can be automatically engaged, and ram system can have protection situation
Under continue to run with.Hardwire protective loop 105 includes generator and motor hand control switch 1051, hardwire protective loop
Access relay system 1052, generator underfrequency protection controlling switch 1053 and generator high level controlling switch 1054.Generate electricity
Machine and motor hand control switch 1051 are used to carry out manual start and stop control to the circuit when using hardwire protective loop 105
System, and then control generator control switches 104；Hardwire protective loop access relay system 1052 is used to lose in protection device
During effect, the Access Control circuit of hardwire protective loop 105 is protected to generator；The control of generator underfrequency protection is opened
Closing 1053 is used to trip after it can not sample to PT air switches, and generator is protected；Generator high level is controlled
Switch 1054 is after access hardwire protective loop 105 so that generator control switches 1054 could trip in high level state.
It can ensure under the fault condition of PLC device 103, the hardwire loop of trip protection is automatically engaged, ram system can continue fortune
OK, the reliability and safety of RAM power-supply systems is improved.And add independent generator and motor hand control switch
1051, it can easily interfere and intervene troubleshooting.
Fig. 4 is to illustrate hardwire protective loop and protection device logic connection diagram in the utility model, generator and
Motor hand control switch 1051 is connected in series with hardwire protective loop access relay system 1052, generator underfrequency protection
Controlling switch 1053 is connected in series in hardwire protective loop access relay system 1052 and generator high level controlling switch
1054 centre, generator high level controlling switch 1054 is connected in series in the loop with interlocking controlling switch 1055.RAM connects firmly
Before line and PLC logic optimizations, when RAM Set1 are normally run, if during 103 failure of PLC device, PLC device in RAM001TB cabinets
103 action outlet signals are that " low level is effective " jumps gate out switch.In the system of the utility model embodiment, RAM with the addition of
Hardwire protective loop 105 and logic to PLC device 103 are optimized, and the action of PLC device 103 outlet signal is by " low
Level is effective " it is changed to " high level is effective " jump gate out switch.RAM generator trippings loop increase manual brake separating generator outlet is opened
Relay is closed, the relay of generator control switches is jumped in the relay in protection act TRIP loop, underfrequency protection action.
Under PLC fault conditions, PLC device 103 outlet signal still be low level signal, and hardwire loop will not dead electricity, outlet is opened
Pass will not be tripped, it is ensured that generator can be continued to run with the case where there is protection.
The utility model is provided with corresponding outlet logic in PLC device 103, under the fault condition of PLC device 103, firmly
Connection circuit is automatically engaged, and control rod power-supply system is continued to run with the case where having protection and control.It will be gone out in the logic of PLC device 103
The triggering field switch tripping operation of magnetic switch tripping command, after field switch separating brake, degaussing switch can smooth demagnetization.Hardwire
Trip(ping) circuit is used under the fault condition of PLC device 103, automatically engages in system, maintains control rod power-supply system normally to run；Firmly
Wiring is stopped transport loop manually, for manual stoppage in transit control rod power-supply system, carries out fault detect and processing.Patrolled in PLC device 103
The failure locking signal of PT air switches, only in the case where PT air switches are intact, underfrequency protection ability are added in volume
Normal reaction equipment state.If Set1 or Set2PLC devices 103 break down, Set1 or Set2 generator outlets will be caused to open
Close tripping operation, the row generator unprotect continues to run with, the fault-signal of PLC devices 103 not on send DCS, cause master control operator without
Method monitoring, and under PLC fault conditions, it is impossible to manual stoppage in transit RAM generating sets carry out troubleshooting.If common portion PLC
Device 103 is broken down, and generator underfrequency protection will be caused to fail.
Before ram system optimization, in the case of the failure of PLC device 103, all protections, control and alarm will failures.Transformation
Afterwards, in the present embodiment, under the fault condition of PLC device 103, differential protection for generator, generator overcurrent protection, generator are inverse
Power protection, generator loss-of-excitation protection automatically switch to independent hardwire protection control loop, and generating set will not be caused to lose
Deprotection, RAM generating sets are continued to run with.
The protection hardwire trip(ping) circuit independent due to adding, under the fault condition of PLC device 103, trip protection
Hardwire protective loop 105 can be automatically engaged, and ram system can be continued to run with, improve RAM power-supply systems reliability and
Security.Before ram system optimization, in the case of the failure of PLC device 103, all protections, control and alarm will failures.After transformation,
Under the fault condition of PLC device 103, differential protection for generator, generator overcurrent protection, reverse-power in the generator protection, generator
Field loss protection automatically switches to independent hardwire protection control loop, and generating set will not be caused to lose protection, RAM generators
Group is continued to run with.
Fig. 6 is to illustrate field suppression protection logical schematic in the utility model embodiment, and Fig. 7 is to illustrate RAM in the prior art
Excitation and the schematic diagram of magnetism elimination circuit, Fig. 8 are the schematic diagrames for illustrating RAM excitations and magnetism elimination circuit in the utility model embodiment,
Such as Fig. 6-8, degaussing switch control device 501 is connected with degaussing switch 500, is gone out for starting after generator excitation switch separating brake
Magnetic switch 500, carries out demagnetization to generator rapidly.
RAM generator excitation switches and degaussing switch are respectively 403JA and 402JA, and excitation is encouraged when generator is opened before optimization
When RAM breaks down within switch 403JA combined floodgates 5s, protection act can not tripping field switch 403JA design defect.It is former
Using 402JA points of position position signallings of degaussing switch as the necessary condition for triggering field switch trip signal in PLC logics, therefore
Within 403JA combined floodgates 5s, the order of tripping field switch can not be sent by 403JA closing positions signal block, rotor loop without
Method demagnetization.
RAM generator excitation switches and degaussing switch are respectively 403JA and 402JA.Encouraged in the prior art when generator is opened
When RAM breaks down within field switch 403JA combined floodgates 5s, protection act can not tripping field switch 403JA design defect.
Degaussing switch 402JA is divided to necessary condition of the position position signallings as field switch trip signal is triggered, therefore in former PLC logics
Within 403JA combined floodgates 5s, the order of tripping field switch can not be sent by 403JA closing positions signal block, rotor loop
Can not demagnetization.
For solve above-mentioned RAM generators open encourage within 5s can not demagnetization the problem of, in the present embodiment of the present utility model,
After being optimized to PLC logics, tripped degaussing switch 402JA tripping commands are triggered into field switch 403JA in PLC logics,
After excitation switch 403JA separating brakes, degaussing switch 402JA can smooth demagnetization, prevent that rotor from burning.By to PLC logics
Optimization, i.e., tripped by the way that degaussing switch 402JA tripping commands are triggered into field switch 403JA in PLC logics, in excitation switch
After 403JA separating brakes, degaussing switch 402JA can smooth demagnetization, so as to prevent that rotor from burning.
Fig. 9 is the schematic diagram for illustrating underfrequency protection logic in the prior art, such as Fig. 9, underfrequency protection switch controlling device 601
Start underfrequency protection switch 600 for sending PLC signals when confirming that PT air switches are intact.Ram system underfrequency protection leads to
PT air switch sample motor exit potential is crossed, if PT air switch fault trips, underfrequency protection loses voltage sample, low frequency
Trip protection is exported, and will cause reactor control rod power supply out of hand, causes chaser to jump heap.Prior art ram system low frequency
Protection switchs sample motor exit potential by PT air, if PT air switch fault trips, underfrequency protection loses voltage and adopted
Sample, underfrequency protection tripping operation outlet, will cause reactor control rod power supply out of hand, cause chaser to jump heap, therefore have impact on and be
The reliability of system.
After PLC logic optimizations, the failure locking signal of PT air switches is added in the PLC logics of underfrequency protection, only
Have in the case where PT air switches are intact, underfrequency protection could normal reaction equipment state, the reliability of raising underfrequency protection.
The utility model causes underfrequency protection malfunction logic by optimizing PT air switch switch trips, improves ram system fortune
Capable stability.By optimization, the failure locking signal of PT air switches is added in the PLC logics of underfrequency protection, only
In the case where PT air switches are intact, underfrequency protection ability normal reaction equipment state improves the reliability of underfrequency protection.
The utility model adds hardwire trip(ping) circuit in ram system, and the hardwire loop of trip protection is automatically engaged,
Ram system can be continued to run with, and improve the reliability and safety of RAM power-supply systems.The independent hardwire of increase stops manually
Road is transported back, to carry out troubleshooting.Optimize generator excitation and demagnetization logic, prevent that rotor loop from burning.Optimize PT air
Switch trip causes underfrequency protection malfunction logic, improves the stability of ram system operation.Implement the technology that the utility model is provided
Scheme, can carry out effective optimization, the ram system of two units after optimization to the ram system of 2 or many units
Can safe operation, during running, two units can be with stable operation fault-free, system various parameters normal operation.
The above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (7)
1. a kind of protection and control system (120) for control rod power-supply system, includes the protection dress of control rod power-supply system
The signal for put (101), providing according to protection device (101) controls the control device (102), defeated of generator control switches (104)
Go out the PLC device (103) of equipment protection control command and control the generator control switches (104) of generator start and stop, it is special
Levy and be, the protection and control system (120) also include hardwire protective loop (105), automatically switch to protection circuit
Interlocking controlling switch (1055), degaussing switch control device (501) and the underfrequency protection switch of hardwire protective loop (105)
Control device (601)；
The protection device (101) includes differential protection for generator device (401), reverse-power in the generator protection device (402), hair
Motor Loss of Excitation Protection (403), generator overcurrent protective device (404) and underfrequency protection switch (405).
2. it is used for protection and the control system of control rod power-supply system according to claim 1, it is characterised in that described to connect firmly
Line protective loop (105) includes generator and motor hand control switch (1051), hardwire protective loop access relay dress
Put (1052), generator underfrequency protection controlling switch (1053) and generator high level controlling switch (1054).
3. the protection and control system according to claim 1 or claim 2 for control rod power-supply system, it is characterised in that described
Generator and motor hand control switch (1051) are used to carry out start and stop control to the circuit when using hardwire protective loop
System, and then control generator control switches (104)；Hardwire protective loop (105) the access relay system (1052) is used for
When protection device (101) is ineffective, hardwire protective loop (105) the Access Control circuit is carried out to generator
Protection；The generator underfrequency protection controlling switch (1053) is used to trip after it can not sample to PT air switches, right
Generator is protected；The generator high level controlling switch (1054) is after access hardwire protective loop so that generate electricity
Machine controlling switch (104) could trip in high level state.
4. it is used for protection and the control system (120) of control rod power-supply system according to claim 2, it is characterised in that institute
Generator and motor hand control switch (1051) is stated to connect with hardwire protective loop access relay system (1052)
Connection, the generator underfrequency protection controlling switch (1053) be connected in series in the hardwire protective loop (105) access after
Electric installation (1052) and the centre of generator high level controlling switch (1054), the generator high level controlling switch (1054)
It is connected in series in the loop with the interlocking controlling switch (1055).
5. it is used for protection and the control system (120) of control rod power-supply system according to claim 1, it is characterised in that institute
Stating interlocking controlling switch (1055) is used to switch the protection device (101) and the hardwire protective loop (105), in protection
When device (101) is ineffective, enables hardwire protective loop (105) and generator is protected.
6. the protection for control rod power-supply system and control system (120) according to any one of claim 1, its feature exist
In the degaussing switch control device (501) is connected with degaussing switch (500), for being opened after generator excitation switch separating brake
Dynamic degaussing switch (500), carries out demagnetization to generator rapidly.
7. the protection for control rod power-supply system and control system (120) according to any one of claim 1, its feature exist
In it is low to start that the underfrequency protection switch controlling device (601) is used for the transmission PLC signals when confirming that PT air switches are intact
Frequency protection switch (600).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620849234.8U CN206332632U (en) | 2016-08-05 | 2016-08-05 | A kind of control rod power-supply system protection and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620849234.8U CN206332632U (en) | 2016-08-05 | 2016-08-05 | A kind of control rod power-supply system protection and control system |
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| Publication Number | Publication Date |
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| CN206332632U true CN206332632U (en) | 2017-07-14 |
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| CN201620849234.8U Active CN206332632U (en) | 2016-08-05 | 2016-08-05 | A kind of control rod power-supply system protection and control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452236A (en) * | 2016-08-05 | 2017-02-22 | 阳江核电有限公司 | Protection and control system for control rod power supply system |
-
2016
- 2016-08-05 CN CN201620849234.8U patent/CN206332632U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452236A (en) * | 2016-08-05 | 2017-02-22 | 阳江核电有限公司 | Protection and control system for control rod power supply system |
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