CN109167338A - A kind of generator-transformer protection control method and its device for nuclear power unit - Google Patents
A kind of generator-transformer protection control method and its device for nuclear power unit Download PDFInfo
- Publication number
- CN109167338A CN109167338A CN201810934211.0A CN201810934211A CN109167338A CN 109167338 A CN109167338 A CN 109167338A CN 201810934211 A CN201810934211 A CN 201810934211A CN 109167338 A CN109167338 A CN 109167338A
- Authority
- CN
- China
- Prior art keywords
- transformer
- fault
- generator
- failure
- unit
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A kind of generator-transformer protection control method and its device for nuclear power unit, in a first aspect, since fault detection unit has the recognition capability of fault detection signal, so that the generation position of fault point or fault type are quickly obtained differentiation；Second aspect; since logic determination unit has selected corresponding Trip Logic to different faults; so that the Fault Control process more classification of transformer unit; it can be avoided the situation of previous transformer unit full cut-off when taking the Trip Logic of shutdown group in alternator failure, in-plant equipment power supply continued as by main transformer conducive to external electrical network；The third aspect, since logic determination unit takes the Trip Logic of full cut-off in main transformer, factory's transformer, transmission of electricity bus and/or switch itself fail, it enables the system to cut off being electrically connected between generator and transformer in time, it can effectively avoid generator to continue to transmit electricity to fault point, conducive to transformer unit safe operation is ensured.
Description
Technical field
The present invention relates to the nuclear power generation technologies of million kilowatt, and in particular to a kind of generator-transformer protection for nuclear power unit
Control method and its device.
Background technique
Nuclear energy power generation is a kind of important new energy power generation technology, with the chemical energy of nuclear fission energy proxy mineral fuel, with
Nuclear reactor and steam generator replace the boiler of thermal power generation, is generated electricity with steam drive steam turbine.Currently, nuclear power unit
It mainly include nuclear reactor, steam generator, steam turbine, generator, transformer and relevant control equipment, wherein generator,
The safety and stabilization of transformer and its relevant generator-transformer protection control system (abbreviation GPA) to the electric power output of nuclear power unit
Property all plays a crucial role.
Currently, often controlled with generator-transformer protection system (GPA) generator and transformer front end or rear end setting
Switch, when the situations such as generator failure, transformer fault, transmission of electricity bus-bar fault, switch faults itself occur, generator-transformer protection
Control system controls corresponding switch according to the control logic of itself and disconnects, thus complete outlet full cut-off, shutdown group, off-the-line or
The movement such as programmed halt, it is ensured that when breaking down can isolated fault point in time, the safety fortune of the protection other equipment of nuclear power unit
Row.
Wherein, Generator outlet load switch is one of the important switch in nuclear power unit, is mainly used for occurring in failure
When isolation generator and transformer, previous Generator outlet load switch can only the following electric current of disjunction 30kA, can not be formed pair
The ability to bear of more high current, there are high currents caused by the failures such as generator outlet three-phase shortcircuit to generator outlet load
It is complete to may result in the unit generated by Generator outlet load switch damage in severe case for the damage risk of switch
The problem of stopping is unfavorable for the stable operation of nuclear power unit in nuclear power station.
In addition, the control logic of previous generator-transformer protection control system (GPA) is more single, for example, occurring drafting
When exporting the dependent failure of full cut-off (such as main transformer, factory's transformer or transmission of electricity bus-bar fault), GPA can only first control steam turbine
High-voltage switch gear tripping on tripping, the degaussing switch tripping of generator and transmission of electricity bus, it is negative just to can control generator outlet later
Lotus switch trips, and so will lead to generator will be connected with main transformer, factory's transformer in short-term, still provide electricity for fault point
Stream, so that there are certain insecurity factors for protection control process.For another example drafting the correlation that outlet shutdown group occurs
When failure (such as two sections of low frequency, two sections of low-voltage, ultra-high pressure switch shunt tripping), GPA is needed in steam turbine tripping and positive low function
After rate movement, could disconnect Generator outlet load switch, in this way, also lead to generator it is interior in short-term still with main transformer
Or the connection of factory's transformer, it is unfavorable for line disconnection at once and carrys out isolated fault point.Further for example, drafting generation internal fault of electric generator
When, GPA can execute the operation of full cut-off main transformer and full cut-off unit according to control logic, and directly resulting in factory's transformer does not have power supply
Awkward condition, the normal power supply demand being unable to ensure in nuclear power station, the tripping for being unfavorable for reaching a small range, which has a power failure, to be required.
Summary of the invention
The present invention solves the technical problem of how when transformer unit breaks down Rapid reversal generator and dispatch from foreign news agency
Connection relationship between net, interior power grid, to enhance nuclear power unit reliability of operation and flexibility.It is asked to solve above-mentioned technology
Topic, the application provide a kind of generator-transformer protection control method and its device for nuclear power unit.
According in a first aspect, provide a kind of generator-transformer protection control method for nuclear power unit in a kind of embodiment, wrap
Include following steps:
Obtain fault detection signal；
Generation position and/or the fault type of failure in the transformer unit are judged according to the fault detection signal；
Trip Logic is determined according to the generation position of failure in the transformer unit and/or fault type；
The tripped condition of respective switch in the transformer unit is controlled according to the Trip Logic.
The transformer unit includes: steam turbine and corresponding shutdown valve, and it is female to pass through outlet for generator and corresponding degaussing switch
The GCB switch on main transformer, factory's transformer and outlet bus that line is connect with generator, and connect with main transformer defeated
High side switch on goddess of lightning's line；
The fault detection signal of the transformer unit include generator failure detection signal, main transformer fault detection signal,
Factory's transformer fault detects one of signal, transmission of electricity bus-bar fault detection signal and switch faults itself detection signal or more
Person.
Generation position and/or the fault type that failure in the transformer unit is judged according to the fault detection signal,
Include:
If detecting, generator failure detects signal, judges the alternator failure in the transformer unit, including phase
Between shorted-turn fault, Stator ground fault, overload fault, step-out failure, loss of excitation failure and inverse probability failure, frequency therefore
Barrier, voltage failure；
If detecting main transformer fault detection signal, judge that the main transformer in the transformer unit breaks down, wraps
Include over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure；
If detecting, factory's transformer fault detects signal, judges that factory's transformer in the transformer unit breaks down, and wraps
Include over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure；
If detecting transmission of electricity bus-bar fault detection signal, judges that the transmission of electricity bus in the transformer unit breaks down, wrap
Include over current fault, phase fault, ground fault；
If detecting switch faults itself detection signal, judges that the respective switch in the transformer unit breaks down, wrap
Include failure fault.
It is described that Trip Logic is determined according to the generation position and/or fault type of failure in the transformer unit, comprising:
If the alternator failure in the transformer unit, it is determined that the Trip Logic of shutdown group, the jump of the shutdown group
Lock logic is used for so that generating open circuit between generator and main transformer, factory's transformer in the transformer unit；
If main transformer, factory's transformer, transmission of electricity bus and/or switch itself fail in the transformer unit, really
Determine the Trip Logic of full cut-off, the Trip Logic of the full cut-off is used for so that generator, main transformer, factory in the transformer unit become
Open circuit is generated between depressor and transmission of electricity bus.
The tripped condition that respective switch in the transformer unit is controlled according to the Trip Logic, comprising:
When the generator in the transformer unit and/or bus of transmitting electricity break down, patrolled according to the tripping of the shutdown group
It collects the shutdown valve of steam turbine in control nuclear power unit, the degaussing switch of generator and GCB switch to trip, so that the hair
Open circuit is generated between generator and main transformer, factory's transformer in change group；
When in the transformer unit main transformer, factory's transformer and/or switch itself fail when, according to the full cut-off
The Trip Logic control shutdown valve of steam turbine, generator degaussing switch and GCB switch and transmission of electricity bus on high-pressure side
Switch trips, so that generating between the generator, main transformer, factory's transformer and transmission of electricity bus in the transformer unit
Open circuit.
According to second aspect, a kind of generator-transformer protection control device is provided in a kind of embodiment, comprising:
Fault detection unit, for obtaining fault detection signal；
Breakdown judge unit, for judging the generation position of failure in the transformer unit according to the fault detection signal
And/or fault type；
Logic determination unit, for determining tripping according to the generation position of failure in the transformer unit and/or fault type
Logic；
Trip control unit, for controlling the tripping shape of each switch in the transformer unit according to the Trip Logic
State.
The fault detection unit fault detection signal detected includes generator failure detection signal, main transformer event
In barrier detection signal, factory's transformer fault detection signal, transmission of electricity bus-bar fault detection signal and switch faults itself detection signal
One of or more persons.
The breakdown judge unit includes:
First judgment module, for when detecting that generator failure detects signal, then judging the hair in the transformer unit
Motor breaks down, including alternate shorted-turn fault, Stator ground fault, overload fault, step-out failure, loss of excitation failure and
Inverse probability failure, frequency fault, voltage failure；
Second judgment module, for when detecting main transformer fault detection signal, then judging in the transformer unit
Main transformer breaks down, including over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure；
Third judgment module, for when detecting that factory's transformer fault detects signal, then judging in the transformer unit
Factory's transformer breaks down, including over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure；
4th judgment module then judges defeated in the transformer unit for detecting transmission of electricity bus-bar fault detection signal
Goddess of lightning's line breaks down, including over current fault, phase fault, ground fault；
5th judgment module then judges the phase in the transformer unit for detecting switch faults itself detection signal
Inductive switch breaks down, including failure fault.
The logic determination unit includes:
First determining module, when for alternator failure in the transformer unit, it is determined that the tripping of shutdown group
Logic, so that generating open circuit between generator and main transformer, factory's transformer in the transformer unit；
Second determining module, for main transformer, factory's transformer, transmission of electricity bus and/or the switch in the transformer unit
Itself fail, it is determined that the Trip Logic of full cut-off, so that generator, main transformer, factory's transformation in the transformer unit
Open circuit is generated between device and transmission of electricity bus.
According to the third aspect, a kind of embodiment provides a kind of nuclear power unit, comprising:
Transformer unit, the transformer unit include steam turbine and corresponding shutdown valve, and generator and corresponding degaussing switch pass through
The GCB switch on main transformer, factory's transformer and outlet bus that outlet bus is connect with generator, and connect with main transformer
The high side switch on transmission of electricity bus connect；
Generator-transformer protection control device as described in second aspect.
The beneficial effect of the application is:
According to a kind of generator-transformer protection control method and its device for nuclear power unit of above-described embodiment, wherein obtaining
The fault detection unit of fault detection signal, the breakdown judge unit for breakdown judge, the logic for determining Trip Logic
Determination unit and tripping control unit for controlling transformer unit tripped condition.In a first aspect, since fault detection unit has
The identification judgement of fault detection signal, so that the generation position of fault point or fault type are quickly obtained judgement；Second
Aspect, since logic determination unit has selected corresponding Trip Logic to different faults, so that the Fault Control process of transformer unit
More classification takes the Trip Logic of shutdown group in alternator failure, conducive to the feelings for avoiding previous transformer unit full cut-off
Shape continues as in-plant equipment power supply by main transformer conducive to external electrical network；The third aspect, since logic determination unit is in main transformer pressure
Device, factory's transformer, transmission of electricity bus and/or while switching itself fail, take the Trip Logic of full cut-off, enable the system to and
When cutting generator and transformer between electricity contact, can effectively avoid generator continue to fault point transmit electricity, conducive to ensuring
Transformer unit safe operation.In addition, the application this by Generator outlet load switch by original old switch replace with have more
The novel GCB switch of big breaking current ability more conducively exists so that having preferably cutting effect between generator and transformer
It is controlled in the present embodiment.
Detailed description of the invention
Fig. 1 is the structure chart of transformer unit in nuclear power unit；
Fig. 2 is the structure chart of generator-transformer protection control device；
Fig. 3 is the flow chart of generator-transformer protection control method；
Fig. 4 is that breakdown judge and Trip Logic determine flow chart.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can recognize without lifting an eyebrow, part of feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant it is some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
Relevant operation can be completely understood according to the general technology knowledge of description and this field in specification.
It is formed respectively in addition, feature described in this description, operation or feature can combine in any suitable way
Kind embodiment.Meanwhile each step in method description or movement can also can be aobvious and easy according to those skilled in the art institute
The mode carry out sequence exchange or adjustment seen.Therefore, the various sequences in the description and the appended drawings are intended merely to clearly describe a certain
A embodiment is not meant to be necessary sequence, and wherein some sequentially must comply with unless otherwise indicated.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
Referring to FIG. 1, the application discloses a kind of nuclear power unit comprising transformer unit and generator-transformer protection control device.Its
In, transformer unit includes steam turbine 11 and corresponding shutdown valve 110, and it is female to pass through outlet for generator 12 and corresponding degaussing switch 120
The GCB switch 13 on main transformer 14, factory's transformer 15 and outlet bus that line is connect with generator 12, and and main transformer
The transmission of electricity bus 16 of 14 connections and the high side switch 160 transmitted electricity on bus 16.
It should be noted that the shutdown valve 110 of steam turbine 11 frequently includes multiple control valves with different function, example
Such as steam turbine emergency stop valve (being suitable for emergency trip to shut down), (steam turbine shutdown valve generally includes 4 high-pressure stops to steam turbine shutdown valve
Valve and 6 low-pressure shutoff valves)；When shutdown valve 110 trips, then steam turbine 11 stops working.The degaussing switch 120 of generator 12
For one of the main control part of generator, for quickly reducing the electric current in energized circuit；When degaussing switch 120 trips,
Then generator 120 stops working.
It should be noted that GCB switch 13 is set to the exit of generator 12, being used to be formed between main transformer 14 can
The connection type of cutting；When GCB switch 13 trips, then the egress line cutting of generator 12.GCB switchs (Generator
Circuit-Breaker, the abbreviation of generator outlet breaker), it is commonly available to the various types of large size such as nuclear power, thermoelectricity and water power
Power plant uses SF6 medium arc extinguishing, and technology maturation, reliable performance, drop-out current reaches as high as several hundred kA.In the present embodiment, adopt
The disjunction failed shorted electric current of GCB switch 13 may be up to 190kA, and generator outlet three-phase shortcircuit maximum short circuit current is past
Toward being 137.4kA, therefore, GCB switch 13 is capable of the electric current on the outlet bus of effective disjunction generator, is applicable to transformer unit
Route under middle majority failure situations, which is cut off, to be required.
It should be noted that main transformer 14 is located on the route that external public electric wire net is transmitted electricity, it is mainly used for generate electricity
The electric energy that machine 12 exports is converted into the electric energy for being suitable for external public electric wire net requirement.The quantity of factory's transformer 15 can be multiple, point
Power supply for electrical equipment that Wei be not different in nuclear power station, is mainly used for converting the electric energy that generator 12 exports to and is suitable for inside
The electric energy that electrical equipment requires.
It should be noted that transmission of electricity bus 16 is used to connect with external public electric wire net, the high-pressure side being arranged on route
Switch 160 often have it is multiple, be respectively used to transmission of electricity bus 16 each route carry out cutting control, for example, by using two main transformers
High-pressure side breaker carries out cutting control to transmission of electricity bus 16.
Wherein, 10 generator-transformer protection control device 10 of the generator-transformer protection control device fault measuring with generator 12 respectively
The fault measuring of equipment, the fault measuring equipment of GCB switch 13, the fault measuring equipment, factory's transformer 15 of main transformer 14 is set
Standby, transmission of electricity bus 16 fault measuring equipment connection, for receiving the fault detection signal of all fault measuring equipment.In addition,
Generator-transformer protection control device 10 also connects with shutdown valve 110, degaussing switch 120, GCB switch 13, high side switch 160 respectively
It connects, for controlling the tripped condition of those switches.
Correspondingly, see Fig. 2, the application discloses a kind of generator-transformer protection control device 10 comprising fault detection unit
101, breakdown judge unit 102, logic determination unit 103 and tripping control unit 104, illustrate separately below.
Fault measuring equipment, the fault measuring equipment of GCB switch 13, main transformer of fault detection unit 101 and generator 12
Fault measuring equipment, the fault measuring equipment of factory's transformer 15, the fault measuring equipment for bus 16 of transmitting electricity of depressor 14 carry out letter
Number connection, for obtaining the fault detection signal of those fault measuring equipment.In one embodiment, 101 institute of fault detection unit
The fault detection signal of detection includes generator failure detection signal, main transformer fault detection signal, the inspection of factory's transformer fault
Survey one or more of signal, transmission of electricity bus-bar fault detection signal and switch faults itself detection signal.
Breakdown judge unit 102 is connect with fault detection unit 101, for being judged in transformer unit according to fault detection signal
The generation position of failure and/or fault type.In one embodiment, breakdown judge unit 102 include first judgment module 1021,
Second judgment module 1022, third judgment module 1023, the 4th judgment module 1024, the 5th judgment module 1025, wherein first
Judgment module 1021 is used for when detecting that generator failure detects signal, then judges that event occurs for the generator 11 in transformer unit
Barrier, fault type include alternate shorted-turn fault, Stator ground fault, overload fault, step-out failure, loss of excitation failure and inverse
Power failure, frequency fault, voltage failure；Second judgment module 1022 is for detecting main transformer fault detection signal
When, then judge that the main transformer 14 in transformer unit breaks down, fault type include over-voltage and over-current failure, Abnormal Grounding failure,
Phase fault, grave gas failure；Third judgment module 1023 is used for when detecting that factory's transformer fault detects signal, then
Judge that factory's transformer 15 in transformer unit breaks down, fault type includes over-voltage and over-current failure, Abnormal Grounding failure, alternate short
Road failure, grave gas failure；4th judgment module 1024 is used to detect transmission of electricity bus-bar fault detection signal, then judges to send out change
Transmission of electricity bus in group breaks down, and fault type includes over current fault, phase fault, ground fault；5th judges mould
Block 1025 is used to detect that switching faults itself detects signal, then judges that the respective switch in transformer unit breaks down (preferably
The faults itself detection signal of ground detection GCB switch simultaneously judges whether it breaks down), fault type includes failure fault.?
In another embodiment, fault detection unit 101 can also detect the fault detection signal of the outlet bus of generator 12, so that the
Four judgment modules 1024 can also judge that the outlet bus in transformer unit occurs when detecting the fault detection signal of outlet bus
Failure.
Logic determination unit 103 is connect with breakdown judge unit 102, for the generation position according to failure in transformer unit
And/or fault type determines Trip Logic.In one embodiment, logic determination unit 103 includes 1031 He of the first determining module
Second determining module 1032, wherein when generator 11 of first determining module 1031 in transformer unit breaks down, then really
Determine the Trip Logic of shutdown group, so that open circuit is generated between the generator and main transformer, factory's transformer in transformer unit, i.e., it is disconnected
Develop the outlet bus of motor；Second determining module 1032 is for the main transformer 14 in transformer unit, factory's transformer 15, transmission of electricity
Bus 16 and/or GCB switch 13 break down, it is determined that the Trip Logic of full cut-off, so that the generator in the transformer unit
11, open circuit is generated between main transformer 14, factory's transformer 15 and transmission of electricity bus 16.
Tripping control unit 104 is connect with logic determination unit 103, each in transformer unit for being controlled according to Trip Logic
The tripped condition of a switch.In one embodiment, tripping control unit 104 respectively with shutdown valve 110, degaussing switch 120, GCB
Switch 13, the connection of 160 signal of high side switch, control the tripped condition of those switches respectively.
Correspondingly, see Fig. 3, the application discloses a kind of generator-transformer protection control method for nuclear power unit comprising step
Rapid S210-S240 illustrates generator-transformer protection control method below with reference to Fig. 1 and technical solution shown in Fig. 2 respectively.
Step S210 obtains fault detection signal.In one embodiment, failure of the fault detection unit 11 from generator 12
Measuring device, the fault measuring equipment of GCB switch 13, the fault measuring equipment of main transformer 14, the failure of factory's transformer 15 are surveyed
Fault detection signal is obtained in amount equipment, the fault measuring equipment for bus 16 of transmitting electricity, then, the fault detection signal packet of transformer unit
Include generator failure detection signal, main transformer fault detection signal, factory's transformer fault detection signal, transmission of electricity bus-bar fault inspection
Survey one or more of signal and switch faults itself detection signal.
Step S220 judges generation position and/or the fault type of failure in transformer unit according to fault detection signal.One
In embodiment, step S220 may include step S221-S226, be respectively described below.
Step S221, the first judgment module 1021 in breakdown judge unit 102 are detecting generator failure detection letter
Number when, then judge that the generator 11 in transformer unit breaks down, enter step S231, otherwise enter step S222.Generator
Fault type includes alternate shorted-turn fault, Stator ground fault, overload fault, step-out failure, loss of excitation failure and inverse function
Rate failure, frequency fault, voltage failure.
Step S222, the second judgment module 1022 in breakdown judge unit 102 are detecting main transformer fault detection
When signal, then judge that the main transformer 14 in transformer unit breaks down, enter step S232, otherwise enters step S223.Main transformer
The fault type of depressor includes over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure.
Step S223, third judgment module 1023 in breakdown judge unit 102 are detecting that factory's transformer fault detects
When signal, then judge that factory's transformer 15 in transformer unit breaks down, enter step S232, otherwise enters step S224.Factory becomes
The fault type of depressor includes over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure.
Step S224, the 4th judgment module 1024 in breakdown judge unit 102 are detecting transmission of electricity bus-bar fault detection
Signal then judges that the transmission of electricity bus in transformer unit breaks down, enters step S232, otherwise enters step S225.Transmission of electricity bus
Fault type include over current fault, phase fault, ground fault；
In another embodiment, the 4th malfunctioning module 1024 can also detect the failure inspection of the outlet bus of generator 12
Signal is surveyed, when bus breaks down in judgement outlet, enters step S232.Outlet bus fault type include over current fault,
Phase fault, ground fault.
Step S225, the 5th judgment module 1025 in breakdown judge unit 102 are detecting switch faults itself detection
Signal then judges that the respective switch in transformer unit breaks down and (preferably detects the faults itself detection signal of GCB switch and sentence
Breaking, whether it breaks down), S232 is entered step, otherwise enters step S226.The fault type of switch includes failure fault.
Step S226 judges generating set fault-free.
It should be noted that the successive judgement sequence of step S221-S225 is adjustable, there is no limit in the present embodiment.
In one embodiment, generation position and the fault type of failure can be known by the following table 1
1 transformer unit error listing of table
It should be noted that the fault type of factory's transformer 15 is identical with the fault type of main transformer 14, here no longer
It is enumerated.
Step S230 determines Trip Logic according to the generation position of failure in transformer unit and/or fault type.Implement one
In example, Fig. 4 is seen, step S230 may include step S231-S232, be respectively described below.
Step S231, the first determining module 1031 in logic determination unit 103 determine the Trip Logic of shutdown group, here
The Trip Logic of shutdown group be used for so that being generated between the generator 11 in transformer unit and main transformer 14, factory's transformer 15 disconnected
Road.
Step S232, the second determining module 1021 in logic determination unit 103 determine the Trip Logic of full cut-off, here
The Trip Logic of full cut-off is used for generator 11, main transformer 14, factory's transformer 15 and transmission of electricity bus 16 so that in transformer unit
Between generate open circuit.
Step S240 controls the tripped condition of respective switch in transformer unit according to Trip Logic.In one embodiment,
When the first determining module 1031 determines the Trip Logic of shutdown group, i.e., when the generator 11 in transformer unit breaks down, according to
The shutdown valve 110 of steam turbine, the degaussing switch 120 of generator and GCB switch in the Trip Logic control nuclear power unit of shutdown group
13 trip, and disconnect the outlet bus of generator, so that the generator 11 in transformer unit and main transformer 14, factory's transformer
Open circuit is generated between 15；When the second determining module 1032 determines the Trip Logic of full cut-off, i.e., main transformer 14 in transformer unit,
When factory's transformer 15, transmission of electricity bus 16 and/or GCB switch 13 break down, steam turbine is controlled according to the Trip Logic of full cut-off
High side switch 160 on shutdown valve 110, the degaussing switch 120 of generator and GCB switch 13 and transmission of electricity bus is jumped
Lock, so that generating open circuit between generator 11, main transformer 14, factory's transformer 15 in transformer unit and transmission of electricity bus 16.
It will be understood to those skilled in the art that the Trip Logic of shutdown group and full cut-off cited in above-mentioned steps S230
It is a kind of tripping way of insurance, but in certain embodiments, when the fault type of fault point is not serious and feelings of self recovery
Under condition, logic determination unit 103 can form the Trip Logic in other subranges, for example, when main transformer 14 is slided
When the failure of pole (step-out) or main transformer overflux, significant damage will not be caused to generator 11, then logic determination unit 103 can be with
The Trip Logic for stopping bus is formed, the high side switch 160 on control transmission of electricity bus trips, and just can so eliminate event
Barrier, conducive to avoiding tripping on a large scale, brought nuclear power produces unstable situation.
It will be understood by those skilled in the art that all or part of function of various methods can pass through in above embodiment
The mode of hardware is realized, can also be realized by way of computer program.When function all or part of in above embodiment
When being realized by way of computer program, which be can be stored in a computer readable storage medium, and storage medium can
To include: read-only memory, random access memory, disk, CD, hard disk etc., it is above-mentioned to realize which is executed by computer
Function.For example, program is stored in the memory of equipment, when executing program in memory by processor, can be realized
State all or part of function.In addition, when function all or part of in above embodiment is realized by way of computer program
When, which also can store in storage mediums such as server, another computer, disk, CD, flash disk or mobile hard disks
In, through downloading or copying and saving into the memory of local device, or version updating is carried out to the system of local device, when logical
When crossing the program in processor execution memory, all or part of function in above embodiment can be realized.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (10)
1. a kind of generator-transformer protection control method for nuclear power unit, which comprises the following steps:
Obtain fault detection signal；
Generation position and/or the fault type of failure in the transformer unit are judged according to the fault detection signal；
Trip Logic is determined according to the generation position of failure in the transformer unit and/or fault type；
The tripped condition of respective switch in the transformer unit is controlled according to the Trip Logic.
2. generator-transformer protection control method as described in claim 1, which is characterized in that
The transformer unit includes: steam turbine and corresponding shutdown valve, generator and corresponding degaussing switch, by outlet bus with
Main transformer, factory's transformer and the GCB exported on bus of generator connection are switched, and transmission of electricity bus is connect with main transformer
On high side switch；
The fault detection signal of the transformer unit includes generator failure detection signal, main transformer fault detection signal, factory's change
One or more of depressor fault detection signal, transmission of electricity bus-bar fault detection signal and switch faults itself detection signal.
3. generator-transformer protection control method as claimed in claim 2, which is characterized in that described according to the fault detection signal
Judge generation position and/or the fault type of failure in the transformer unit, comprising:
If detecting, generator failure detects signal, judges the alternator failure in the transformer unit, including alternate circle
Between short trouble, Stator ground fault, overload fault, step-out failure, loss of excitation failure and inverse probability failure, frequency fault, electricity
Press failure；
If detecting main transformer fault detection signal, judge that the main transformer in the transformer unit breaks down, including mistake
Press over current fault, Abnormal Grounding failure, phase fault, grave gas failure；
If detecting, factory's transformer fault detects signal, judges that factory's transformer in the transformer unit breaks down, including mistake
Press over current fault, Abnormal Grounding failure, phase fault, grave gas failure；
If detecting transmission of electricity bus-bar fault detection signal, judge that the transmission of electricity bus in the transformer unit breaks down, including mistake
Flow failure, phase fault, ground fault；
If detecting switch faults itself detection signal, judge that the respective switch in the transformer unit breaks down, including lose
Clever failure.
4. generator-transformer protection control method as claimed in claim 3, which is characterized in that described according to failure in the transformer unit
Generation position and/or fault type determine Trip Logic, comprising:
If the alternator failure in the transformer unit, it is determined that the tripping of the Trip Logic of shutdown group, the shutdown group is patrolled
It collects and generates open circuit between the generator and main transformer, factory's transformer being used for so that in the transformer unit；
If main transformer, factory's transformer, transmission of electricity bus and/or switch itself fail in the transformer unit, it is determined that complete
The Trip Logic of the Trip Logic stopped, the full cut-off is used for generator, main transformer, factory's transformer so that in the transformer unit
And open circuit is generated between transmission of electricity bus.
5. generator-transformer protection control method as claimed in claim 4, which is characterized in that described to be controlled according to the Trip Logic
The tripped condition of respective switch in the transformer unit, comprising:
When the alternator failure in the transformer unit, vapour in nuclear power unit is controlled according to the Trip Logic of the shutdown group
The shutdown valve of turbine, the degaussing switch of generator and GCB switch trip, so that generator and master in the transformer unit
Open circuit is generated between transformer, factory's transformer；
When in the transformer unit main transformer, factory's transformer, transmission of electricity bus and/or switch itself fail when, according to institute
It states on the shutdown valve of Trip Logic control steam turbine, the degaussing switch of generator and GCB switch and transmission of electricity bus of full cut-off
High side switch trips so that generator, main transformer, factory's transformer in the transformer unit and transmission of electricity bus it
Between generate open circuit.
6. a kind of generator-transformer protection control device characterized by comprising
Fault detection unit, for obtaining fault detection signal；
Breakdown judge unit, for judged according to the fault detection signal failure in the transformer unit generation position and/or
Fault type；
Logic determination unit, for determining Trip Logic according to the generation position and/or fault type of failure in the transformer unit；
Trip control unit, for controlling the tripped condition of each switch in the transformer unit according to the Trip Logic.
7. generator-transformer protection control device as claimed in claim 6, which is characterized in that the fault detection unit is detected
Fault detection signal include generator failure detection signal, main transformer fault detection signal, factory's transformer fault detection signal,
One or more of bus-bar fault of transmitting electricity detection signal and switch faults itself detection signal.
8. generator-transformer protection control device as claimed in claim 7, which is characterized in that the breakdown judge unit includes:
First judgment module, for when detecting that generator failure detects signal, then judging the generator in the transformer unit
It breaks down, including alternate shorted-turn fault, Stator ground fault, overload fault, step-out failure, loss of excitation failure and inverse function
Rate failure, frequency fault, voltage failure；
Second judgment module, for when detecting main transformer fault detection signal, then judging the main transformer in the transformer unit
Depressor breaks down, including over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure；
Third judgment module, the factory for when detecting that factory's transformer fault detects signal, then judging in the transformer unit become
Depressor breaks down, including over-voltage and over-current failure, Abnormal Grounding failure, phase fault, grave gas failure；
4th judgment module then judges that the transmission of electricity in the transformer unit is female for detecting transmission of electricity bus-bar fault detection signal
Line breaks down, including over current fault, phase fault, ground fault；
5th judgment module then judges accordingly opening in the transformer unit for detecting switch faults itself detection signal
Pass is broken down, including failure fault.
9. generator-transformer protection control device as claimed in claim 8, which is characterized in that the logic determination unit includes:
First determining module, when for alternator failure in the transformer unit, it is determined that the Trip Logic of shutdown group,
So that generating open circuit between generator and main transformer, factory's transformer in the transformer unit；
Second determining module bus and/or switchs itself for the main transformer in the transformer unit, factory's transformer, transmission of electricity
Break down, it is determined that the Trip Logic of full cut-off so that generator, main transformer, factory's transformer in the transformer unit with
And open circuit is generated between transmission of electricity bus.
10. a kind of nuclear power unit characterized by comprising
Transformer unit, the transformer unit include steam turbine and corresponding shutdown valve, and generator and corresponding degaussing switch pass through outlet
The GCB switch on main transformer, factory's transformer and outlet bus that bus is connect with generator, and connect with main transformer
The high side switch transmitted electricity on bus；
Generator-transformer protection control device as claim in any one of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934211.0A CN109167338B (en) | 2018-08-16 | 2018-08-16 | Generator-transformer unit protection control method and device for nuclear power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934211.0A CN109167338B (en) | 2018-08-16 | 2018-08-16 | Generator-transformer unit protection control method and device for nuclear power unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109167338A true CN109167338A (en) | 2019-01-08 |
| CN109167338B CN109167338B (en) | 2020-04-28 |
Family
ID=64895935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934211.0A Active CN109167338B (en) | 2018-08-16 | 2018-08-16 | Generator-transformer unit protection control method and device for nuclear power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109167338B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571761A (en) * | 2019-08-22 | 2019-12-13 | 北京四方继保自动化股份有限公司 | generation and transformation group protection method applied to international nuclear power million units |
| CN113725822A (en) * | 2020-05-26 | 2021-11-30 | 新特能源股份有限公司 | Method and system for removing fault of 220kV bus |
| CN114035497A (en) * | 2021-10-26 | 2022-02-11 | 江西五十铃汽车有限公司 | Emergency switching control method suitable for finish paint drying furnace of automobile coating plant |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769162A (en) * | 2017-11-22 | 2018-03-06 | 国网新疆电力有限公司电力科学研究院 | Generator protection tripgear based on 3/2 wiring condition power plant |
-
2018
- 2018-08-16 CN CN201810934211.0A patent/CN109167338B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769162A (en) * | 2017-11-22 | 2018-03-06 | 国网新疆电力有限公司电力科学研究院 | Generator protection tripgear based on 3/2 wiring condition power plant |
Non-Patent Citations (1)
| Title |
|---|
| 查卫华等: "WFB-100微机保护在秦山第二核电厂的应用", 《继电器》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571761A (en) * | 2019-08-22 | 2019-12-13 | 北京四方继保自动化股份有限公司 | generation and transformation group protection method applied to international nuclear power million units |
| CN110571761B (en) * | 2019-08-22 | 2021-12-28 | 北京四方继保自动化股份有限公司 | Generation and transformation group protection method applied to international nuclear power million units |
| CN113725822A (en) * | 2020-05-26 | 2021-11-30 | 新特能源股份有限公司 | Method and system for removing fault of 220kV bus |
| CN114035497A (en) * | 2021-10-26 | 2022-02-11 | 江西五十铃汽车有限公司 | Emergency switching control method suitable for finish paint drying furnace of automobile coating plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109167338B (en) | 2020-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103001195A (en) | Relay protection method capable of quickly removing dead zone fault of transformer | |
| CN103117532B (en) | Zero-sequence voltage trip protection method for low-voltage side of transformers | |
| CN108169615A (en) | A kind of starting spare transformer open phase detection method based on optical ct | |
| CN108873832B (en) | Logic system and device of generator fault interlocking tripping stator cooling water pump | |
| CN109167338A (en) | A kind of generator-transformer protection control method and its device for nuclear power unit | |
| CN110571761B (en) | Generation and transformation group protection method applied to international nuclear power million units | |
| CN112909903B (en) | High-voltage plant grounding protection and quick switching device protection starting combined optimization method | |
| CA2365737C (en) | Loop restoration scheme for distribution feeders | |
| CN104836330A (en) | Method for quickly detecting bus PT three-phase disconnection of automatic switching device of standby power supply and method for preventing maloperation of bus PT three-phase disconnection of automatic switching device of standby power supply | |
| CN112491040B (en) | Automatic switching device for backup power line of superconducting cable and operation method thereof | |
| CN103762551A (en) | Relay protection method for accelerated removal and TA sealing of dead zone faults of transformer based on open positions of circuit breakers | |
| CN104242455A (en) | 110 kV substation protection and control action cooperation strategy suitable for DG (distributed generation) accessing | |
| CN110912092A (en) | 3-66 kV line disconnection protection method for comparing line voltages on two sides of line | |
| Andruşcă et al. | Aspects about the monitoring and diagnosis of high voltage circuit breakers | |
| CN112054491B (en) | Unified power flow controller closing failure protection method and system based on current discrimination | |
| US20120287544A1 (en) | Isolation-type ac fault current limited circuit | |
| CN101714779B (en) | Directional current based shutting method of high-speed switching device of industrial enterprise power supply | |
| CN103618290A (en) | Transformer dead-zone fault relay protection method based on short-time open protection and sealed TAs | |
| CN110932228B (en) | Centralized reclosing method under breaker failure condition | |
| CN109412256B (en) | Standby power supply switching method and device | |
| CN111224384A (en) | Method for comparing line voltage vector difference on two sides of line and protecting line breakage by adopting loop closing and opening operation | |
| CN111477523A (en) | Combined fuse, application device thereof and protection method of application device | |
| WO2008067299A2 (en) | Method and system for isolating disturbances to the power distribution system | |
| CN210780078U (en) | Power generation and supply network protection system | |
| CN103683200A (en) | Relay protection method for dead-zone faults of voltage transformers on basis of starting at switching positions and sealed current transformers TA |
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 |