CN110120269A - One kind effectively eliminating the extended shutdown design method of nuclear power plant's reactor rod drop time - Google Patents
One kind effectively eliminating the extended shutdown design method of nuclear power plant's reactor rod drop time Download PDFInfo
- Publication number
- CN110120269A CN110120269A CN201910458142.5A CN201910458142A CN110120269A CN 110120269 A CN110120269 A CN 110120269A CN 201910458142 A CN201910458142 A CN 201910458142A CN 110120269 A CN110120269 A CN 110120269A
- Authority
- CN
- China
- Prior art keywords
- power
- control
- relay
- phase
- normally opened
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/36—Control circuits
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses one kind to effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, is equipped with mutually independent PLC logic control circuit and three-phase control relay concatenation unit in stick control power cabinet；This method in stick control power cabinet by being added a set of independent shutdown power-off control circuit for avoiding single failure, it is completely independent out with original PLC interrelated logic control circuit, and the independent shutdown power-off control circuit of the set is designed in such a way that anti-single failure is combined with Redundant Control, guarantee that the shut-down channel response time is all satisfied requirement under various operating conditions, to improve the reliability of system equipment.
Description
Technical field
The present invention relates to field of pressurized water reactor nuclear, and in particular, to when one kind effectively eliminates nuclear power plant's reactor scram
Between extended shutdown design method.
Background technique
Nuclear power station medium rod control stick position system equipment is used to provide timing electric current for control rod drive mechanism, controls reactor control
Stick processed is promoted in reactor core, remained stationary and is inserted into, and adjusts the reactivity of reactor, to realize that the starting of reactor, band are negative
Lotus operation and shutdown function；Physical location of the control rod in reactor core is monitored simultaneously, and monitor control rod to be in the process of running
It is no that there are the abnormal phenomenon such as slide bar, card rod.Rod control and position indication system is particularly significant to the safe and reliable operation of nuclear power plant.
Stick control power cabinet (abbreviation power cabinet) is not only defeated to driving mechanism as the core equipment in Rod control and position indication system
Electric current timing out, promotion, insertion and holding control cluster, but also to realize that reactor normally opens heap, shutdown and maintenance reaction
Heap power.
Power cabinet provides timing electric current for control rod drive mechanism, to control its movement.Power cabinet also participates in instead simultaneously
Answer heap normal shutdown function, when shutdown breaker is opened, from stick power-supply system be input to the three-phase dynamic electricity source of power cabinet with
It disconnects, control rod falls into heap bottom under gravity.The requirement of T3 and T4 of shut-down channel response time is as follows: T3 is shutdown
The time (i.e. from coil without tension power loss to the time kept hook coil losing electricity) that breaker is opened, and T3 should be less than being equal to
150ms；T4 is the time (i.e. from holding hook coil losing electricity to control rod) for keeping hook release, and T4 should be less than being equal to
150ms。
The main circuit of partial power cabinet uses IGBT scheme in nuclear power plant at present, real using SR-MOTOR topological circuit structure
It is existing.Its circuit topological structure schematic diagram is as shown in Figure 1.
The design combination active quenching control technology of the main circuit, devises energy Releasing loop, freewheeling circuit and electric discharge
Circuit improves energy conversion efficiency when load discharge, so as to reduce current waveform failing edge on driving mechanism coil
Time.
The effect of voltage Releasing loop is to force to drive when VT1 and VT2 (VT1 be IGBT with VT2) are simultaneously turned off in Fig. 1
Energy on dynamic actuator coil is discharged by the discharge loop that energy release circuit, discharge circuit and freewheeling circuit form, thus
Form active suppression circuit.It, can be by driving mechanism line when VT1 and VT2 are simultaneously turned off since driving mechanism coil is inductive load
The variation of energy is equivalent to the conversion of magnetic field energy and electric field energy, the energy conversion principle figure of this active quenching circuit on circle
As shown in Figure 2.
Power cabinet main circuit is had the following advantages using active quenching control technology: 1. when magnetic field loss of excitation on driving mechanism coil
When, the induction of coil load causes back-emf, the increase of back-emf can be limited using the active quenching circuit structure, to protect
IGBT is protected；2. the magnetic field energy being stored in coil is quickly converted to by discharge loop when VT1 and VT2 are simultaneously turned off
Electric field energy is utilized by next step starting (VT1 and VT2 are also turned on again).Particularly, when shutdown breaker disconnects,
Realize that VT1 and VT2 is simultaneously turned off by PLC logic control circuit, the magnetic field energy in coil is rapid by discharge loop at this time
Be converted into electric field energy, guarantee coil power on stream the failing edge time it is as short as possible, to ensure that rod drop time is met the requirements.
As long as current in-service nuclear power station medium rod control stick position system power supply cabinet main circuit uses above topology structure, all only adopt
IGBT is simultaneously turned off with single PLC logic control circuit, to realize driving mechanism retaining hook when shutdown breaker disconnects
The quick power down of pawl coil.When logic control circuit failure, will be unable to rapidly switch off IGBT simultaneously, on driving mechanism coil
Energy be unable to rapid conversion, cause keep the hook coil losing electricity time extend so that T3 the and T4 time is not able to satisfy and sets
Meter requires.
Summary of the invention
In view of the reliability that protection system security function is realized, and the related request of single failure criteria is combined, this
Invention uses one kind and effectively eliminates the extended shutdown design method of nuclear power plant's reactor rod drop time, by the way that a set of independence is added
The shutdown power-off control circuit for avoiding single failure, be completely independent out with original PLC interrelated logic control circuit, and the set
Independent shutdown power-off control circuit is designed in such a way that anti-single failure is combined with Redundant Control, to guarantee to stop
Heap Channel Response Time is all satisfied requirement under various operating conditions.
For achieving the above object, this application provides one kind, to effectively eliminate nuclear power plant's reactor rod drop time extended
Shutdown design method, which comprises
Mutually independent PLC logic control circuit and three-phase control relay concatenation unit are equipped in stick control power cabinet；
PLC logic control circuit is used for when the three-phase dynamic electricity source for being input to stick control power cabinet from stick power-supply system disconnects
When, it will be used to transmit IGBT in the first power case of coil power supply for driving mechanism in stick control power cabinet, and be driving machine
IGBT is simultaneously turned off in the second source cabinet of structure hold-in winding power supply；
Three-phase control relay concatenation unit is used to be input to stick power-supply system the three-phase dynamic electricity source of stick control power cabinet
It is measured in real time, when detecting that the three-phase dynamic electricity source for being input to stick control power cabinet from stick power-supply system disconnects, by stick control
The control power supply of IGBT drive circuit in the first power case in power cabinet for transmitting coil power supply for driving mechanism, and
Control power supply for IGBT drive circuit in the second source cabinet of driving mechanism hold-in winding power supply simultaneously turns off.
Further, PLC logic control circuit includes: PLC processor module, PLC digital quantity input/output module, light
Coupling interface circuit, FPGA main control module；The status signal of PLC digital quantity input module reception three-phase detection relay, and by
After PLC processor module carries out logical process, IGBT is turned off by order by PLC digital output module while being output to first
In the FPGA main control module of power case and second source cabinet；The control module of first power case and second source cabinet is logical
Cross optocoupler interface circuit receive IGBT shutdown order, and by FPGA main control module carry out logical process after, driven through IGBT
Circuit exports cut-off signals to the grid of respective IGBT, so that IGBT be driven to simultaneously turn off simultaneously.
Further, the implementation of three-phase control relay concatenation unit are as follows: in stick control power cabinet three-phase dynamic electricity source
The each phase of input side increases the state that four relay module are used to monitor every phase power supply；Simultaneously using relay pair side normally opened contact
Join the tandem type design combined with series connection, and monitors concatenated three Lu Binglian of rear class using three tandem states control relays
Contact；When monitoring the equal power loss of three phase mains by being driven to IGBT in IGBT in the first power case and second source cabinet
Power supply output forbids end to be controlled, and disconnects it and is output to IGBT drive circuit power supply.
Further, three-phase control relay concatenation unit, specifically includes:
Corresponding four relays of U are RL11, RL12, RL13, RL14；Corresponding four relays of V be RL21,
RL22,RL23,RL24；Corresponding four relays of W are RL31, RL32, RL33, RL34；Receive above-mentioned relay contact shape
The PLC digital quantity input module of state；
The primary side of RL11, RL12, RL13, RL14 relay is connect with the U phase power supply in input power power supply respectively,
The normally opened contact of RL11 and the normally opened contact of RL12 are in parallel, and the normally opened contact of RL13 and the normally opened contact of RL14 are in parallel, RL11 with
It connects again after the normally opened contact and RL13 of RL12 and the normally opened contact of RL14 two-by-two parallel connection, for turning off IGBT driving power
Control signal is input to the control power module in cabinet by the cascade circuit；
The primary side of RL21, RL22, RL23, RL24 relay is connect with the V phase power supply in input power power supply respectively,
The normally opened contact of RL21 and the normally opened contact of RL22 are in parallel, and the normally opened contact of RL23 and the normally opened contact of RL24 are in parallel, RL21 with
It connects again after the normally opened contact and RL23 of RL22 and the normally opened contact of RL24 two-by-two parallel connection, for turning off IGBT driving power
Control signal is input to the control power module in cabinet by the cascade circuit；
The primary side of RL31, RL32, RL33, RL34 relay is connect with the W phase power supply in input power power supply respectively,
The normally opened contact of RL31 and the normally opened contact of RL32 are in parallel, and the normally opened contact of RL33 and the normally opened contact of RL34 are in parallel, RL31 with
It connects again after the normally opened contact and RL33 of RL32 and the normally opened contact of RL34 two-by-two parallel connection, for turning off IGBT driving power
Control signal is input to the control power module in cabinet by the cascade circuit.
Further, the DC interface power of PLC logic control circuit be used as RL11, RL12, RL13, RL14, RL21,
The interface power of RL22, RL23, RL24, RL31, RL32, RL33, RL34.
Further, RL11, RL12, RL13, RL14, RL21, RL22, RL23, RL24, RL31, RL32, RL33, RL34
Normally-closed contact be respectively connected in the input module of PLC logic control circuit, for monitoring the state of each relay.
Further, the first power case is believed with reception in second source cabinet for turning off the control of IGBT driving power
Number, which have passed through the control power module being input to after relay cascade circuit in cabinet, control connecing in power supply
Mouth circuit is optocoupler redundant circuit and triode redundant circuit.
Further, the three-phase control relay concatenation unit further includes 3 tandem states control relays, 3 grades
Join status monitoring relay normally opened contact respectively four relay normally open contacts corresponding with three intermediate point connection, 12 three
The self-test driving signal of phase relay is generated by the output module of PLC logic control circuit；The normally closed touching of 12 three-phase electrical relays
The status checkout signal of point access is acquired by the input module of PLC logic control circuit；It is patrolled by PLC logic control circuit
It collects control and carries out relay contact trouble shooting in sequence, to realize the automatic of three-phase control relay concatenation unit
Detection and fault alarm.
One kind being effectively eliminated the extended shutdown design method of nuclear power plant's reactor rod drop time and is applied to reaction by the present invention
In heap stick control power cabinet, the decline of driving mechanism coil current is output to caused by efficiently solving traditional equipment due to single failure
Extend along the time and influence rod drop time, improves the reliabilty and availability of equipment.
The innovation of the invention consists in that:
Independent shutdown power-off control electricity is added on the basis of original PLC logic control circuit in stick control power cabinet for the first time
Road meets shut-down channel response time requirement in single failure, improves the reliability of system equipment；
The independent shutdown power-off control circuit is designed using relay cascade system, when single control relay because
When malfunction and failure, the state for being input to power case control signal will not influence；
The independent shutdown power-off control circuit of the set adds the Redundant Control interface of triode in power case using optocoupler
Circuit not will cause the change of state of a control when guaranteeing that any one device breaks down in interface control circuit；
The electric current that power cabinet is output on transmitting coil and hold-in winding (being used to driving mechanism holding) is simultaneously switched off, really
It protects driving mechanism and (it is logical to transmit coil and hold-in winding in single hold mode (only hold-in winding energization) or double hold modes
Electricity) Shi Junneng quick response shutdown scram order, so that rod drop time is met the requirements.
One or more technical solution provided by the present application, has at least the following technical effects or advantages:
A set of independence is added on the basis of turning off IGBT by control signal using PLC logic control circuit in the present invention
Shutdown power-off control circuit, while the independent shutdown power-off control circuit of the set has used three-phase control relay concatenation unit
Signaling interface redundant circuit is controlled with optocoupler in power case and triode, guarantees that the shut-down channel response time meets system design
It is required that improving the reliability of system equipment, and meet single failure criteria.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is power cabinet main circuit schematic diagram；
Fig. 2 is the energy conversion principle figure of active quenching circuit；
Fig. 3 is two-way of the present invention control shutdown IGBT schematic diagram；
Fig. 4 is three-phase control relay concatenation unit design drawing of the present invention；
Fig. 5 is that two-way controls shutdown schematic diagram.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
Implemented with being different from the other modes being described herein in range using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
The primary demand of driving mechanism coil discharge from Fig. 1 and Fig. 2, only as two-way IGBT upper and lower in main circuit
When simultaneously turning off, it is just able to achieve the rapid conversion of driving mechanism coil magnetic field energy capacitive field energy into discharge loop.IGBT
Shutdown mode mainly from control signal control and driving power control on account for, other in main circuit additionally installation open
The way of pass device and control unit will increase the complexity of circuit, reduce its reliability.
IGBT driving is added on the basis of turning off IGBT by control signal using PLC logic control circuit in the present invention
The power supply in circuit controls.When shutdown breaker is opened, it is input to the three phase mains of power cabinet power loss immediately, is connect by relay
The power failure state is received, (IGBT drive circuit power supply drops to voltage rating by the control dump of IGBT drive circuit
When 70% or less, IGBT will be automatically shut down), to realize that VT1 and VT2 are simultaneously turned off.Two-way control shutdown IGBT of the present invention is former
Reason figure is as shown in Figure 3.
According to the judgement of the power failure state to input three phase mains, while power case of quickly cutting off the power in cabinet is to driving
The power supply of mechanism just can guarantee that system rod drop time is met the requirements.Therefore key technology point of the invention are as follows: power cabinet input three
When phase power loss, driving mechanism holding will be used for by three-phase dynamic electricity source status monitoring relay concatenation unit in cabinet
Power case 1 (transmitting coil (MC) power supply for driving mechanism) and power case 2 (for driving mechanism hold-in winding (SC) power supply)
IGBT driving power quickly cut off, to rapidly switch off corresponding IGBT pipe.
The design diagram of three-phase control relay concatenation unit is as shown in Figure 4.It is inputted in power cabinet three-phase dynamic electricity source
The each phase in side increases the state that four relay module are used to monitor every phase power supply.Using the normally opened contact parallel connection of relay pair side with
The tandem type combined of connecting designs, and using the concatenated three tunnels parallel connections touching of three tandem states control relays monitoring rear classes
Point.Forbid holding by IGBT driving power output to power case 1 and in power case 2 when monitoring the equal power loss of three phase mains
It is controlled, disconnects it and be output to IGBT drive circuit power supply, to realize that VT1 and VT2 are simultaneously turned off.
Figure 4, it is seen that the three-phase control relay independently of the design of PLC logic control circuit that the present invention designs
In concatenation unit, every phase power supply is all made of four relays and is monitored in input power power supply U, V, W, corresponding four of U after
Electric appliance be RL11, RL12, RL13, RL14, corresponding four relays of V be RL21, RL22, RL23, RL24, W corresponding four
Relay is RL31, RL32, RL33, RL34.Primary features are as follows:
The normally opened contacts of above-mentioned 12 three-phase electrical relays carry out it is in parallel two-by-two after again concatenated cascade form be attached,
The 24VDC interface power of PLC is used as relay interface power supply simultaneously to supervise in three-phase dynamic electricity source when equal power loss by three-phase
It surveys relay cascade circuit and disconnects interface power PLC_24V (the state control letter being input in power case 1 and power case 2
Number), and the output of IGBT driving power is controlled by the interface control circuit in power case and is disconnected, to realize that IGBT's is quick
Shutdown；
The normally-closed contact of above-mentioned 12 three-phase electrical relays is respectively connected in the input module of PLC, for monitor it is each after
The state of electric appliance；
Due to using in parallel plus concatenated cascade system, when relay all the way any in three-phase breaks down, Bu Huizao
Change at the state for being output to power case control signal；
The interface circuit that the control signal (interface power PLC_24V) is received in power case 1 and power case 2 is light
Coupling redundant circuit and triode redundant circuit not will cause the change of power supply output state when any one device breaks down.
Above-mentioned design meets single failure criteria.
Meanwhile in order to can automatically detect whether 12 road three-phase electrical relays have before and after the upper and lower electricity of power cabinet electrical source of power
Tandem states control relay is added in failure in cascade circuit.The self-test driving signal of the relay by PLC output module
It generates, status checkout signal (being accessed by the normally-closed contact of 12 three-phase electrical relays) is acquired by the input module of PLC.Pass through
PLC logic control carries out relay contact trouble shooting in sequence, to realize the automatic inspection of three-phase control relay
Survey and fault alarm.
Fig. 5 is the schematic diagram that two-way designed by the present invention controls shutdown mode, from fig. 5, it can be seen that the present invention uses
PLC directly controls power case output power-off and power-off two kinds of power case output of the control of three-phase control relay concatenation unit
Mode, it is ensured that when reactor shutdown breaker is opened, power cabinet is output to driving mechanism and (passes for controlling cluster hold-in winding
Pass coil and hold-in winding) can quick power down so that hook is opened control cluster and is fallen, to guarantee that rod drop time will not be because
Rod drop time is caused to extend for single control circuit failure.
Invention proposes one kind and effectively eliminates the extended shutdown design method of nuclear power plant's reactor rod drop time, is based on the control
The shutdown power-off control circuit of method processed carried out in the case where testing room environmental PLC directly control, three-phase control relay grade
The control of receipts or other documents in duplicate member and the controlled each function of effectively turning off of IGBT are tested repeatedly.Test result shows that this kind effectively eliminates nuclear power
The extended shutdown design method of factory's reactor rod drop time can under normal circumstances with when single failure guarantee driving mechanism line
The quick power down of electric current on circle, to guarantee that driving mechanism hook is opened within desired actuation time, control rod is smoothly fallen to
Reactor core, rod drop time meet design requirement.
Design based on the invention simultaneously has been applied in reactor stick control power cabinet, and equipment is tried by functional performance
It tests, electromechanical compatibility test, test result shows that rod drop time is met the requirements under the various actual conditions in testing ground.
The invention proposes one kind to effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, this method
By the way that a set of independent shutdown power-off control circuit for avoiding single failure is added in stick control power cabinet, with original PLC phase
It closes logic control circuit to be completely independent out, and the independent shutdown power-off control circuit of the set uses anti-single failure and Redundant Control
The mode combined is designed, and guarantees that the shut-down channel response time is all satisfied requirement under various operating conditions, to improve and be
The reliability for equipment of uniting.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. one kind effectively eliminates the extended shutdown design method of nuclear power plant's reactor rod drop time, which is characterized in that the method
Include:
Mutually independent PLC logic control circuit and three-phase control relay concatenation unit are equipped in stick control power cabinet；
PLC logic control circuit be used for when be input to from stick power-supply system stick control power cabinet three-phase dynamic electricity source disconnect when,
IGBT in the first power case of coil power supply will be used to transmit in stick control power cabinet for driving mechanism, and protected for driving mechanism
IGBT in the second source cabinet of coil power supply is held to simultaneously turn off；
The three-phase dynamic electricity source that three-phase control relay concatenation unit is used to be input to stick power-supply system stick control power cabinet carries out
Real-time detection, when detecting that the three-phase dynamic electricity source for being input to stick control power cabinet from stick power-supply system disconnects, by stick control power supply
The control power supply of IGBT drive circuit in the first power case in cabinet for transmitting coil power supply for driving mechanism, and to drive
The control power supply of IGBT drive circuit simultaneously turns off in the second source cabinet of motivation structure hold-in winding power supply.
2. according to claim 1 effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, spy
Sign is, PLC logic control circuit include: PLC processor module, PLC digital quantity input/output module, optocoupler interface circuit,
FPGA main control module；PLC digital quantity input module receives the status signal of three-phase detection relay, and by PLC processor mould
Block carry out logical process after, by PLC digital output module by IGBT shutdown order simultaneously be output to the first power case with
In the FPGA main control module of second source cabinet；The control module of first power case and second source cabinet passes through optocoupler interface
Circuit receive IGBT shutdown order, and by FPGA main control module carry out logical process after, through IGBT drive circuit simultaneously it is defeated
Out cut-off signals to respective IGBT grid, so that IGBT be driven to simultaneously turn off.
3. according to claim 1 effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, spy
Sign is, the implementation of three-phase control relay concatenation unit are as follows: input side is each in stick control power cabinet three-phase dynamic electricity source
Mutually increase the state that four relay module are used to monitor every phase power supply；Using relay pair side normally opened contact parallel connection and serial connection phase
In conjunction with tandem type design, and monitor the concatenated three roads collateral contacts of rear class using three tandem states control relays；Work as prison
By being exported to IGBT driving power in IGBT in the first power case and second source cabinet when measuring the equal power loss of three phase mains
Forbid end to be controlled, disconnects it and be output to IGBT drive circuit power supply.
4. according to claim 1 effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, spy
Sign is that three-phase control relay concatenation unit specifically includes:
U corresponding four relays RL11, RL12, RL13, RL14；The corresponding four relay RL21, RL22 of V, RL23,
RL24；W corresponding four relays RL31, RL32, RL33, RL34；Receive the PLC digital quantity of above-mentioned relay contact state
Input module；
The primary side of RL11, RL12, RL13, RL14 relay is connect with the U phase power supply in input power power supply respectively；RL11's
Normally opened contact is in parallel with the normally opened contact of RL12；The normally opened contact of RL13 and the normally opened contact of RL14 are in parallel；RL11's and RL12
It connects again after normally opened contact and RL13 and the normally opened contact of RL14 two-by-two parallel connection, the control for turning off IGBT driving power is believed
Number the control power module in cabinet is input to by the cascade circuit；
The primary side of RL21, RL22, RL23, RL24 relay is connect with the V phase power supply in input power power supply respectively；RL21's
Normally opened contact is in parallel with the normally opened contact of RL22；The normally opened contact of RL23 and the normally opened contact of RL24 are in parallel；RL21's and RL22
It connects again after normally opened contact and RL23 and the normally opened contact of RL24 two-by-two parallel connection, the control for turning off IGBT driving power is believed
Number the control power module in cabinet is input to by the cascade circuit；
The primary side of RL31, RL32, RL33, RL34 relay is connect with the W phase power supply in input power power supply respectively；RL31's
Normally opened contact is in parallel with the normally opened contact of RL32；The normally opened contact of RL33 and the normally opened contact of RL34 are in parallel；RL31's and RL32
It connects again after normally opened contact and RL33 and the normally opened contact of RL34 two-by-two parallel connection, the control for turning off IGBT driving power is believed
Number the control power module in cabinet is input to by the cascade circuit.
5. according to claim 4 effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, spy
Sign is, the DC interface power of PLC logic control circuit be used as RL11, RL12, RL13, RL14, RL21, RL22, RL23,
The interface power of RL24, RL31, RL32, RL33, RL34.
6. according to claim 4 effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, spy
Sign is, the normally-closed contact of RL11, RL12, RL13, RL14, RL21, RL22, RL23, RL24, RL31, RL32, RL33, RL34
It is respectively connected in the input module of PLC logic control circuit, for monitoring the state of each relay.
7. according to claim 4 effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, spy
Sign is, the control signal for turning off IGBT driving power, the control are received in the first power case and second source cabinet
Signal have passed through the control power module being input to after relay cascade circuit in cabinet, and controlling the interface circuit in power supply is light
Coupling redundant circuit and triode redundant circuit.
8. according to claim 4 effectively eliminate the extended shutdown design method of nuclear power plant's reactor rod drop time, spy
Sign is that the three-phase control relay concatenation unit further includes 3 tandem states control relays, 3 tandem states monitorings
The normally opened contact of relay respectively four relay normally open contacts corresponding with three intermediate point connection, 12 three-phase electrical relays
Self-test driving signal by PLC logic control circuit output module generate；The normally-closed contact access of 12 three-phase electrical relays
Status checkout signal is acquired by the input module of PLC logic control circuit；It is pressed by PLC logic control circuit logic control
Certain timing carries out relay contact trouble shooting, to realize the automatic detection and event of three-phase control relay concatenation unit
Barrier alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910458142.5A CN110120269B (en) | 2019-05-29 | 2019-05-29 | Reactor shutdown design method for effectively eliminating extension of rod falling time of nuclear power plant reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910458142.5A CN110120269B (en) | 2019-05-29 | 2019-05-29 | Reactor shutdown design method for effectively eliminating extension of rod falling time of nuclear power plant reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110120269A true CN110120269A (en) | 2019-08-13 |
| CN110120269B CN110120269B (en) | 2020-10-23 |
Family
ID=67523600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910458142.5A Active CN110120269B (en) | 2019-05-29 | 2019-05-29 | Reactor shutdown design method for effectively eliminating extension of rod falling time of nuclear power plant reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110120269B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112102977A (en) * | 2020-09-04 | 2020-12-18 | 兰州空间技术物理研究所 | Nuclear reactor safety rod performance test system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588518A (en) * | 1969-02-13 | 1971-06-28 | Westinghouse Electric Corp | Power multiplexing system |
| GB1282222A (en) * | 1969-02-13 | 1972-07-19 | Westinghouse Electric Corp | Power regulation system |
| US3796890A (en) * | 1969-02-13 | 1974-03-12 | Westinghouse Electric Corp | Power regulation system |
| CN101206928A (en) * | 2006-12-21 | 2008-06-25 | 数据系统及解决技术公司 | System for operating control mechanisms of rods in a nuclear reactor |
| CN201489841U (en) * | 2009-03-12 | 2010-05-26 | 中国原子能科学研究院 | Circuit breaker of sodium-cooled fast reactor protecting system |
| CN102103894A (en) * | 2010-09-30 | 2011-06-22 | 中科华核电技术研究院有限公司 | IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system |
| CN102157208A (en) * | 2010-11-12 | 2011-08-17 | 中广核工程有限公司 | Nuclear power plant reactor protection system |
| CN201984840U (en) * | 2011-03-17 | 2011-09-21 | 江苏核电有限公司 | Controller for reducing misoperation rate of periodical reactor trip breaker test |
| CN105931679A (en) * | 2016-05-18 | 2016-09-07 | 中国核动力研究设计院 | One-out-of-two conformation maintenance bypass device of reactor protection system |
| CN106328218A (en) * | 2016-11-10 | 2017-01-11 | 北京凯佰特科技股份有限公司 | Reactor control system for hospital neutron irradiator |
| CN108877974A (en) * | 2017-05-15 | 2018-11-23 | 斗山重工业建设有限公司 | Atomic power station numerical protection system |
-
2019
- 2019-05-29 CN CN201910458142.5A patent/CN110120269B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588518A (en) * | 1969-02-13 | 1971-06-28 | Westinghouse Electric Corp | Power multiplexing system |
| GB1282222A (en) * | 1969-02-13 | 1972-07-19 | Westinghouse Electric Corp | Power regulation system |
| US3796890A (en) * | 1969-02-13 | 1974-03-12 | Westinghouse Electric Corp | Power regulation system |
| CN101206928A (en) * | 2006-12-21 | 2008-06-25 | 数据系统及解决技术公司 | System for operating control mechanisms of rods in a nuclear reactor |
| US20090116605A1 (en) * | 2006-12-21 | 2009-05-07 | Data Systems & Solutions | Nuclear reactor rod control mechanism control system |
| CN201489841U (en) * | 2009-03-12 | 2010-05-26 | 中国原子能科学研究院 | Circuit breaker of sodium-cooled fast reactor protecting system |
| CN102103894A (en) * | 2010-09-30 | 2011-06-22 | 中科华核电技术研究院有限公司 | IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system |
| CN102157208A (en) * | 2010-11-12 | 2011-08-17 | 中广核工程有限公司 | Nuclear power plant reactor protection system |
| CN201984840U (en) * | 2011-03-17 | 2011-09-21 | 江苏核电有限公司 | Controller for reducing misoperation rate of periodical reactor trip breaker test |
| CN105931679A (en) * | 2016-05-18 | 2016-09-07 | 中国核动力研究设计院 | One-out-of-two conformation maintenance bypass device of reactor protection system |
| CN106328218A (en) * | 2016-11-10 | 2017-01-11 | 北京凯佰特科技股份有限公司 | Reactor control system for hospital neutron irradiator |
| CN108877974A (en) * | 2017-05-15 | 2018-11-23 | 斗山重工业建设有限公司 | Atomic power station numerical protection system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112102977A (en) * | 2020-09-04 | 2020-12-18 | 兰州空间技术物理研究所 | Nuclear reactor safety rod performance test system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110120269B (en) | 2020-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103595120B (en) | Many inlet wires standby electric power automatic throwing method | |
| CN101764432B (en) | Intelligent operation box with action contact self-checking function | |
| CN202435320U (en) | Protection circuit of soft starter | |
| CN101074614A (en) | Digital redundant emergent protecting system of steam turbine | |
| CN104597750A (en) | Core relay fault detection and redundancy control system and control method | |
| CN110988665B (en) | Abnormal alarm method for closing function of spring type circuit breaker | |
| CN101013825A (en) | Method and apparatus for controlling PC automatic change-over and controller thereof | |
| CN110120269A (en) | One kind effectively eliminating the extended shutdown design method of nuclear power plant's reactor rod drop time | |
| CN107086667A (en) | A kind of outlet breaker closing circuit structure and its method of work | |
| CN101908778A (en) | Multifunctional dual-load dual-power automatic switchover control device | |
| CN219697294U (en) | Back-to-back working condition magnetic switch opening circuit of pumping and storage unit | |
| CN203871919U (en) | Fast switching system of power sources | |
| CN101841186B (en) | Automatic backup silicon chain switching device for direct-current system | |
| CN103837826A (en) | System and method for identification of faulty region of high-voltage switch operating circuit | |
| CN101826719A (en) | Trip-proof lockout microcomputer protection system | |
| CN105790430A (en) | Quick-switching combined electrical appliance | |
| CN201717611U (en) | Anti-tripping latching protection system for microcomputers | |
| CN203825144U (en) | Circuit for identifying broken line area of switch control circuit | |
| CN109591655A (en) | Emergent stopping charging unit, charging pile and working method | |
| CN108150301A (en) | One kind is stopped in emergency circuit and its implementation | |
| CN103941155A (en) | High-voltage switch control loop break area identification circuit and identification method | |
| CN208001183U (en) | Backup auto-activating device and system | |
| CN109066604B (en) | Generator low-voltage protection system of million-kilowatt nuclear power station | |
| CN101174516B (en) | State monitoring device for circuit breaker | |
| CN208539573U (en) | A kind of phase-change switch that can prevent detection automatically |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |