CN110460047A - The power-supply switching method and system of AC system are pressed in a kind of atomic-powered ship - Google Patents

Abstract

The invention discloses power-supply switching methods and system that AC system is pressed in a kind of atomic-powered ship, AC system is pressed suitable for atomic-powered ship, it include: at least two power supply buses and at least two bus bars, it the described method comprises the following steps: the power loss bus in S1, detection bus bar, and judge power loss bus for scheduled outage or failure power loss；When S2, failure power loss, according to the comparison result of the voltage status amount of power loss bus and a normal bus bar, quick power switching mode or same period switch mode or at a slow speed switch mode are selected according to pre-set priority, power loss bus is switched to be powered by the corresponding power supply buses of normal bus bar.The present invention is switched using quick power switching, the same period, switches the method combined at a slow speed, by to power loss bus compared with normal bus bar voltage magnitude, working frequency and phase angle, switching mode is selected according to priority, guarantees that power supply switching coverage minimizes.

Description

The power-supply switching method and system of AC system are pressed in a kind of atomic-powered ship

Technical field

The present invention relates in Nuclear Power System ship technical field of electricity more particularly to a kind of atomic-powered ship in press hand over The power-supply switching method and system of streaming system.

Background technique

Prior art discloses a kind of fast switching system (CN 202535048), which is to pass through Fast switching system equipped with controller and protection act module, with two sections of buses of system and each incoming breaker, mother open circuit Device and mutual inductor are attached.Restore two sections of bus normal power supplies in a short time, guarantees that the high-tension motor of moment power loss exists It is rapid in the case where completely out of service electric to resume operation.

But it has the disadvantage in that

1) fast switching system is when power loss busbar voltage drops to voltage rating 20%~40% and switches, due to downstream electrical Larger current is fed back in motivation self-starting, larger to internal supply network reliability effect, is not suitable for being applied to ship internal electric source Switching；

2) switching system can neglect electric network influencing in handoff procedure when it is infinite bulk power grid that power generation, which is terminated into object, Slightly disregard, but when it is more fragile low capacity power grid that power generation, which is terminated into object, the disturbance generated in handoff procedure, which may be drawn, to collapse Entire microgrid.

Summary of the invention

The technical problem to be solved in the present invention is that in view of the drawbacks of the prior art, provides and pressed in a kind of atomic-powered ship The power-supply switching method and system of AC system.

The technical solution adopted by the present invention to solve the technical problems is: constructing in a kind of atomic-powered ship and presses AC system Power-supply switching method, press AC system suitable for the atomic-powered ship, comprising: at least two power supply buses and at least Two bus bars the following steps are included:

Power loss bus in S1, detection bus bar, and judge the power loss bus for scheduled outage or failure power loss；

When S2, failure power loss, according to the comparison result of the voltage status amount of the power loss bus and a normal bus bar, Quick power switching mode or same period switch mode are selected according to pre-set priority or switch mode, the power loss bus are cut at a slow speed It shifts to and is powered by the corresponding power supply buses of the normal bus bar.

Preferably, in the power-supply switching method that AC system is pressed in atomic-powered ship of the present invention, the step S1 includes:

S1-1, the voltage status amount for acquiring each bus bar in real time, comprising: voltage magnitude, working frequency and phase angle, Judge with the presence or absence of pressure difference, frequency difference and angular difference between each bus bar, if so, judging the bus bar that voltage reduces to lose Goddess of lightning's line, the constant bus bar of voltage are normal bus bar；

S1-2, when detecting the power loss bus, judge whether that receiving the corresponding feeder ear of the power loss bus sends Scheduled outage signal, if so, judge the power loss bus for scheduled outage, detect the power loss bus and it is described normally by When between goddess of lightning's line without block signal, then start scheduled outage switching；If it is not, then judge the power loss bus for failure power loss, When detecting between the power loss bus and the normal bus bar without block signal, then startup separator power loss switches.

Preferably, in the power-supply switching method that AC system is pressed in atomic-powered ship of the present invention, the step S2 includes:

When S2-1, failure power loss, it is pre- to judge whether the frequency difference between the power loss bus and a normal bus bar is less than If frequency difference setting valve, if so, S2-2 is thened follow the steps, the working frequency between the power loss bus and the normal bus bar Identical, the angular difference between the power loss bus and the normal bus bar is fixed value；

S2-2, judge that the angular difference between the power loss bus and the normal bus bar is less than default angular difference setting valve When, then entering fast-switching mode, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, The power loss bus is restored electricity by the corresponding power supply buses of the normal bus bar, and the downstream load of the power loss bus is set It is standby to operate normally.

Preferably, in the power-supply switching method that AC system is pressed in atomic-powered ship of the present invention, the step S2 further include:

S2-3, judge that the frequency difference between the power loss bus and the normal bus bar is greater than default frequency difference setting valve When, then the voltage value for entering the power loss bus under same period switch mode or fast-switching mode does not restore within a preset time When to rated value, then same period switch mode is switched to by fast-switching mode；

Under S2-4, same period switch mode, there are frequency difference, the mistakes between the power loss bus and the normal bus bar Angular difference between goddess of lightning's line and the normal bus bar changes over time, and carries out angle school to the phase angle of the power loss bus Just, compensation breaker closing compensates angle, judges that the angular difference of the compensated power loss bus and the normal bus bar is to pass Subtract or be incremented by, if successively decreasing, then carry out synchronization cap-ture, the angular difference for being decremented to the power loss bus and the normal bus bar is At 0 °, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, and the power loss bus is by institute It states the corresponding power supply buses of normal bus bar to restore electricity, the downstream load equipment of the power loss bus operates normally；

If being incremented by, and judge that the angular difference of the power loss bus and the normal bus bar is less than default angular difference setting valve When, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, and the power loss bus is by described The normal corresponding power supply buses of bus bar restore electricity, and the downstream load equipment of the power loss bus operates normally.

Preferably, in the power-supply switching method that AC system is pressed in atomic-powered ship of the present invention, the step S2 further include:

S2-5, judge that the angular difference between the power loss bus and the normal bus bar is greater than default angular difference setting valve When or same period switch mode under the voltage value of power loss bus when not restoring within a preset time to rated value, then by the same period Switch mode switchs to switch mode at a slow speed；

S2-6, at a slow speed under switch mode, detect the voltage attenuation of the power loss bus to the 20%-40% of rated value When, delay judges whether the voltage of the power loss bus decays to the 20%-40% of rated value again, if so, sending unloading Signal controls automatic unloading, the power loss bus is downstream important load to the sub-load equipment in power loss bus downstream Equipment normal power supply；

Busbar breaker between S2-7, the power loss bus and the normal bus bar is closed a floodgate, and sends load letter Number to unloaded sub-load equipment, boot loader is controlled, the sub-load equipment completes automatic load, the mistake Goddess of lightning's line is restored electricity by the corresponding power supply buses of the normal bus bar, and the downstream load equipment of the power loss bus is normal Operation.

Preferably, in the power-supply switching method that AC system is pressed in atomic-powered ship of the present invention, the step S2 further include:

When S2-8, scheduled outage, it is corresponding with the normal bus bar to detect the corresponding power supply buses of the power loss bus Power supply buses between busbar breaker and whether be closed at, if so, the corresponding power supply buses of the power loss bus with It is paired running between the corresponding power supply buses of the normal bus bar, executes step S2-9；If it is not, the then power loss bus It is fanout operation between corresponding power supply buses power supply buses corresponding with the normal bus bar, executes step S2-10；

S2-9, judge pressure difference between power loss bus power supply buses corresponding with the normal bus bar, frequency difference, Whether angular difference is all the same, if they are the same, then the mother open circuit being closed first between the power loss bus and the normal bus bar Device, then the incoming breaker between the power loss bus and corresponding power supply buses is disconnected, the power loss bus is by described normal The corresponding power supply buses power supply of bus bar, the downstream load equipment of the power loss bus operate normally；

S2-10, it when judging the angular difference of power loss bus power supply buses corresponding with the normal bus bar for 0, reaches To same period point, the incoming breaker between the power loss bus and corresponding power supply buses is disconnected first, recloses the power loss Busbar breaker between bus and the normal bus bar, the power loss bus is by the corresponding confession of the normal bus bar The downstream load equipment of electric bussed supply, the power loss bus operates normally.

The Power transfer system that AC system is pressed in a kind of atomic-powered ship has also been constructed in the present invention, and it is dynamic to be suitable for the core AC system is pressed in power ship, comprising: at least two power supply buses and at least two bus bars, comprising:

Power loss detection module for detecting the power loss bus in each bus bar, and judges the power loss bus for plan Power failure or failure power loss；

Switching judging module compares when for detecting that the power loss bus is failure power loss according to the detection pattern The voltage status amount of power loss bus and a normal bus bar in the bus bar；

Switching module, it is fast according to pre-set priority selection power supply for the comparison result according to the switching judging module Fast switch mode or same period switch mode or at a slow speed switch mode, the power loss bus are switched to by the normal bus bar pair The power supply buses answered are powered.

Preferably, in the Power transfer system that AC system is pressed in atomic-powered ship of the present invention, the power loss Detection module includes:

Acquisition module, for acquiring the voltage status amount of each bus bar in real time, comprising: voltage magnitude, working frequency with And phase angle；

Power loss judgment module, for the voltage status amount according to the collected each bus bar of the acquisition module, judgement It whether there is pressure difference, frequency difference and angular difference between each bus bar, if so, judging that the power loss bus for scheduled outage, is examined When surveying between the power loss bus and the normal bus bar without block signal, then start scheduled outage switching；If it is not, then sentencing The power loss bus that breaks is failure power loss, when detecting between the power loss bus and the normal bus bar without block signal, Then startup separator power loss switches；

Breakdown judge module judges whether to receive when detecting the power loss bus for the power loss judgment module The scheduled outage signal that the corresponding feeder ear of the power loss bus is sent, if so, judge the power loss bus for scheduled outage, If it is not, then judging the power loss bus for failure power loss.

Preferably, in the Power transfer system that AC system is pressed in atomic-powered ship of the present invention, the switching Judgment module includes:

It is switched fast judgment module, when judging the power loss bus for the power loss detection module for failure power loss, is sentenced Whether the frequency difference between the power loss bus and a normal bus bar of breaking is less than default frequency difference setting valve, and judges the mistake Whether the angular difference between goddess of lightning's line and the normal bus bar is less than default angular difference setting valve；

Same period switching judging module, for judging the voltage value of the power loss bus under fast-switching mode whether pre- If not restoring in the time to rated value, judging that the angular difference of the compensated power loss bus and the normal bus bar is to successively decrease Or it is incremented by and to judge whether the angular difference of the power loss bus and the normal bus bar is less than when the angular difference is incremented by pre- If angular difference setting valve；

Switching judging module at a slow speed, for judging the voltage value of the power loss bus under same period switch mode whether pre- If not restoring in the time to rated value.

Preferably, in the Power transfer system that AC system is pressed in atomic-powered ship of the present invention, the switching Module includes:

Be switched fast module, for be switched fast according to judgment module judge to obtain the power loss bus and it is described just When frequency difference between normal bus is less than default frequency difference setting valve, then the work between the power loss bus and the normal bus bar Working frequency is identical, and the angular difference between the power loss bus and the normal bus bar is fixed value；And according to described quick When switching judging module judges to obtain the angular difference between the power loss bus and the normal bus less than default angular difference setting valve, Then enter fast-switching mode, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, institute It states power loss bus to be restored electricity by the corresponding power supply buses of the normal bus bar, the downstream load equipment of the power loss bus It operates normally；

Same period switching module, for be switched fast according to judgment module judge to obtain the power loss bus and it is described just When frequency difference between normal bus bar is greater than default frequency difference setting valve or the same period switching judging module judge to obtain it is described fast When the voltage value of the power loss bus does not restore within a preset time to rated value under fast switch mode, then by fast-switching mode Switch to same period switch mode；Under same period switch mode, there are frequency difference, institutes between the power loss bus and the normal bus bar The angular difference stated between power loss bus and the normal bus bar changes over time, and carries out angle to the phase angle of the power loss bus Degree correction, compensation breaker closing compensate angle, the compensated mistake judged according to the same period switching judging module The angular difference of goddess of lightning's line and the normal bus bar is then to carry out synchronization cap-ture when successively decreasing, and is decremented to the power loss bus and institute When the angular difference for stating normal bus bar is 0 °, the busbar breaker between the power loss bus and the normal bus bar is controlled It closes a floodgate, the power loss bus is restored electricity by the corresponding power supply buses of the normal bus bar, the downstream of the power loss bus Load equipment operates normally；The compensated power loss bus judged according to the same period switching judging module with it is described The angular difference of normal bus bar is incremental, and the angular difference of the power loss bus and the normal bus bar is whole less than default angular difference When definite value, control busbar breaker between the power loss bus and the normal bus bar and close a floodgate, the power loss bus by The corresponding power supply buses of the normal bus bar restore electricity, and the downstream load equipment of the power loss bus operates normally；

Switching module at a slow speed, the power loss bus for being judged according to the same period switching module and described normal Judged when angular difference between bus bar is greater than default angular difference setting valve or according to the judgment module at a slow speed to obtain same period switching When the voltage value of the power loss bus does not restore within a preset time to rated value under mode, then switched to slowly by same period switch mode Fast switch mode；At a slow speed under switch mode, when detecting the 20%-40% of the voltage attenuation of the power loss bus to rated value, Delay judges whether the voltage of the power loss bus decays to the 20%-40% of rated value again, if so, sending unloader signal To the sub-load equipment in power loss bus downstream, automatic unloading is controlled, the power loss bus is downstream important load equipment Normal power supply；Busbar breaker between the power loss bus and the normal bus bar is closed a floodgate, and sends load signal extremely Unloaded sub-load equipment controls boot loader, and the sub-load equipment completes automatic load, and the power loss is female Line is restored electricity by the corresponding power supply buses of the normal bus bar, and the downstream load equipment of the power loss bus is normally transported Row.

By the power-supply switching method and system for implementing to press AC system in a kind of atomic-powered ship of the invention, have with It is lower the utility model has the advantages that

1, the present invention carries out adaptability design for pressure AC system in atomic-powered ship, and Power transfer system is applied to Nuclear power ship improves the safety and reliability of nuclear power ship supply network；

2, the present invention is switched using quick power switching, the same period, switches the method combined at a slow speed, by power loss bus Compared with normal bus bar voltage magnitude, working frequency and phase angle, switching mode is selected according to priority, guarantees electricity Source switches coverage and minimizes；

3, the present invention designs switching mode at a slow speed according to ship platform electrical network feature, negative by unloading bus downstream automatically Lotus and delay prevent the starting current of motor self-starting generation in handoff procedure is excessive from drawing the ship supply network that collapses, expand accident Range；

4, the present invention can overcome the switching of Conventional marine generation platform internal electric source to dock system disturbance caused by micro-capacitance sensor Problem improves the stability of micro-capacitance sensor；

5, " remnant voltage switch " motor self-starting electric current problems of too in the process is solved in existing fast handoff technique；

6, when solving switching because residual voltage and power supply phase angle difference it is excessive caused by dash current；

7, it solves because micro-capacitance sensor stability is poor, causes to be switched fast the lower problem of success rate, enhance the reliable of power supply Property.

Detailed description of the invention

Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:

Fig. 1 is the flow chart that the power-supply switching method of AC system is pressed in atomic-powered ship of the present invention；

Fig. 2 is the wiring schematic diagram that AC system is pressed in atomic-powered ship of the present invention；

Fig. 3 is the flow chart that power supply switching is carried out when pressing AC system power failure power loss in atomic-powered ship of the present invention；

Fig. 4 is the flow chart that power supply switching is carried out when pressing AC system generation planning to have a power failure in atomic-powered ship of the present invention；

Fig. 5 is the module map that the Power transfer system of AC system is pressed in atomic-powered ship of the present invention.

In attached drawing 2, bus is pressed in A: the first, bus is pressed in B: the second, C: pressing bus in third, press bus in D: the four, 1: the first incoming breaker, 2: the second incoming breakers, 3: the 3,4: the four incoming breaker of third incoming breaker, 5: the five is female Join breaker, 6: the six busbar breakers, 7: the seven busbar breakers, 8: the eight busbar breakers, 9: nine inlet wire current mutual inductances Device, 10: the ten inlet wire current mutual inductors, 11: the ten one inlet wire current mutual inductors, 12: the ten two inlet wire current mutual inductors, 13: 13rd mother current transformer, 14: the ten four mother current transformers, 15: the ten five voltage transformers, 16: the ten six electricity Press mutual inductor, 17: the ten seven voltage mutual inducer trolleys, 18: the ten eight voltage mutual inducer trolleys, 19: Power transfer system, G1: First feeder ear, the G2: the second feeder ear.

Specific embodiment

For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail A specific embodiment of the invention.

It is core ancillary equipment that AC system downstream institute's carrying device is pressed in nuclear power ship, is to guarantee nuclear power ship safety and normal production Important key equipment, since nuclear power ship power supply system is complex, it is anti-for proposing high pressure AC system power supply reliability Only nuclear power ship is extended to the important link of nuclear safety event due to power failure.The present invention is based on pressure exchange systems in atomic-powered ship The high feature of system power supply power supply reliability requirement improves the reliability of power supply switching power supply on the basis of conventional power source switching And success rate, devise it is a set of containing normal power source switching and accident be switched fast, the same period switching, at a slow speed switch middle pressure exchange system System Power transfer system.The relatively traditional at present quick power switching design of the Power transfer system is more reliable, for nuclear power Ship and access micro-capacitance sensor feature do adaptability design, to guarantee to press the reliability of AC system power supply, Yi Ji in nuclear power ship Design the availability under extended mode.

First embodiment, Fig. 1 are the flow charts that the power-supply switching method of AC system is pressed in atomic-powered ship of the present invention, such as Shown in Fig. 1, the present invention constructs the power-supply switching method that AC system is pressed in a kind of atomic-powered ship, is suitable for atomic-powered ship Middle pressure AC system, comprising: at least two power supply buses and at least two bus bars, comprising the following steps:

Power loss bus in S1, detection bus bar, and judge power loss bus for scheduled outage or failure power loss；

When S2, failure power loss, according to the comparison result of the voltage status amount of power loss bus and a normal bus bar, according to Pre-set priority selects quick power switching mode or same period switch mode or switch mode, power loss bus are switched to by just at a slow speed The normal corresponding power supply buses of bus bar are powered.

Specifically, step S1 includes:

S1-1, the voltage status amount for acquiring each bus bar in real time, comprising: voltage magnitude, working frequency and phase angle, Judge with the presence or absence of pressure difference, frequency difference and angular difference between each bus bar, if so, judging the bus bar that voltage reduces to lose Goddess of lightning's line, the constant bus bar of voltage are normal bus bar；It in other embodiments, can real time automatic detection power supply buses Voltage signal, the incoming breaker between bus bar and power supply buses, the busbar breaker between power supply buses and by The state of busbar breaker between goddess of lightning's line, notes abnormalities and alarm, the mode of alarm can choose indicator light warning or Person's audible alarm；

S1-2, when detecting power loss bus, judge whether that receiving the plan that the corresponding feeder ear of power loss bus is sent stops Electric signal, if so, judging that power loss bus for scheduled outage, detects between power loss bus and normal bus bar without block signal When, then start scheduled outage switching；If it is not, judging power loss bus then for failure power loss, power loss bus is detected and normally by the goddess of lightning When between line without block signal, then startup separator power loss switches.Wherein, scheduled outage is planned power failure, on power loss bus Trip power supply is normally switched, and failure power loss is then accident power loss, because of power loss bus upstream power failure；

When one section of power loss bus upstream power supply buses are because of failure power loss, can be switched fast power loss bus to another section normally by The corresponding power supply buses of goddess of lightning's line, realize power supply in the short time, step S2 includes:

When S2-1, failure power loss, judge whether the frequency difference between power loss bus and a normal bus bar is less than default frequency Poor setting valve, if so, thening follow the steps S2-2, the working frequency between power loss bus and normal bus bar is identical, and power loss is female Angular difference between line and normal bus bar is fixed value；Wherein, which is preset threshold, can be according to reality Situation is configured；

S2-2, when judging that angular difference between power loss bus and normal bus bar is less than default angular difference setting valve, then enter Fast-switching mode, the busbar breaker controlled between power loss bus and normal bus bar are closed a floodgate, power loss bus by normally by The corresponding power supply buses of goddess of lightning's line restore electricity, and the downstream load equipment of power loss bus operates normally, and fast switching time is 60ms~80ms, nuclear power ship power loss bus power loss time are very short；Wherein, presetting angular difference setting valve is preferably 2 °；

S2-3, when judging that frequency difference between power loss bus and normal bus bar is greater than default frequency difference setting valve, then enter When the voltage value of power loss bus does not restore within a preset time to rated value under same period switch mode or fast-switching mode, then Same period switch mode is switched to by fast-switching mode；Wherein, preset time be power loss bus downstream motor will not self-starting it is anti- It the time for presenting larger current, can be configured according to the actual situation；

Under S2-4, same period switch mode, there are frequency difference between power loss bus and normal bus bar, power loss bus and normal Angular difference between bus bar changes over time, and carries out angle correct to the phase angle of power loss bus, compensation breaker closing is mended Angle is repaid, judges that the angular difference of compensated power loss bus and normal bus bar is to successively decrease or be incremented by, if successively decreasing, then carries out the same period It captures, when the angular difference for being decremented to power loss bus and normal bus bar is 0 °, controls between power loss bus and normal bus bar Busbar breaker close a floodgate, power loss bus restores electricity by the corresponding power supply buses of normal bus bar, the downstream of power loss bus Load equipment operates normally；

If be incremented by, and judge that the angular difference of power loss bus and normal bus bar is less than default angular difference setting valve, control Busbar breaker between power loss bus and normal bus bar is closed a floodgate, and power loss bus is corresponding for the goddess of lightning by normal bus bar Line restores electricity, and the downstream load equipment of power loss bus operates normally；

S2-5, judge when angular difference between power loss bus and normal bus bar is greater than default angular difference setting valve or the same period When the voltage value of power loss bus does not restore within a preset time to rated value under switch mode, then switched to slowly by same period switch mode Fast switch mode；

S2-6, at a slow speed under switch mode, when detecting the 20%-40% of the voltage attenuation of power loss bus to rated value, prolong Shi Zaici judges whether the voltage of power loss bus decays to the 20%-40% of rated value, if so, sending unloader signal to power loss The sub-load equipment in bus downstream, controls automatic unloading, and power loss bus is downstream important load equipment normal power supply；Wherein, Judgement is to judge the case where signal of voltage attenuation is with the presence or absence of false alarm, preferably delay 1S again for delay.

Busbar breaker between S2-7, power loss bus and normal bus bar is closed a floodgate, and sends load signal to having unloaded The sub-load equipment of load controls boot loader, and sub-load equipment completes automatic load, and power loss bus is by normally by electricity The corresponding power supply buses of bus restore electricity, and the downstream load equipment of power loss bus operates normally.

When S2-8, scheduled outage, the corresponding power supply buses of detection power loss bus are corresponding with normal bus bar for the goddess of lightning Busbar breaker between line and whether it is closed at, if so, the corresponding power supply buses of power loss bus and normal bus bar It is paired running between corresponding power supply buses, executes step S2-9；If it is not, then corresponding power supply buses of power loss bus and normal It is fanout operation between the corresponding power supply buses of bus bar, executes step S2-10；

S2-9, whether judge pressure difference between power loss bus power supply buses corresponding with normal bus bar, frequency difference, angular difference It is all the same, if they are the same, then the busbar breaker being closed first between power loss bus and normal bus bar, then disconnect power loss bus With the incoming breaker between corresponding power supply buses, power loss bus is powered by the corresponding power supply buses of normal bus bar, is lost The downstream load equipment of goddess of lightning's line operates normally；

S2-10, when judging the angular difference of power loss bus power supply buses corresponding with normal bus bar for 0, reach same period point, The incoming breaker between power loss bus and corresponding power supply buses is disconnected first, recloses power loss bus and normal bus bar Between busbar breaker, power loss bus powered by the corresponding power supply buses of normal bus bar, the downstream load of power loss bus Equipment operates normally.

Second embodiment, Fig. 2 are the wiring schematic diagrams that AC system is pressed in atomic-powered ship of the present invention, as shown in Fig. 2, with It is illustrated for two power supply buses C and D, two bus bars A and B, is by the first feeder ear G1 and the second feeder ear G2 AC system power supply is pressed in atomic-powered ship, including is preferably Turbo-generator Set, can also be diesel engine unit.Atomic-powered ship Middle pressure AC system includes: to press bus B in press in the first of 10kV bus A, 10kV second, be electrically connected with the first feeder ear G1 10kV third in press bus C, with pressure bus D, pressure bus C in third in the 4th of the second feeder ear G2 10kV be electrically connected the With first in press bus A between the first incoming breaker 1 and the second incoming breaker the 2, the 4th in press bus D and second in press It presses in bus C the 4th and is pressed between bus D in third incoming breaker 3 and the 4th incoming breaker 4, third between bus B It is pressed in 5th busbar breaker 5 and the 6th busbar breaker 6, first and presses the 7th mother between bus B disconnected in bus A and second The 9th inlet wire current mutual inductor 9 pressed between bus A in bus C and first is pressed in road device 7 and the 8th busbar breaker 8, third And the tenth press the 11st inlet wire current mutual inductor pressed between bus B in bus D and second in inlet wire current mutual inductor the 10, the 4th Pressing in bus C and the 4th in 11 and the 12nd inlet wire current mutual inductor 12, third presses the 13rd mother electric current between bus D mutual It is pressed in sensor 13, first in the 14th mother current transformer 14, first pressed in bus A and second between bus B and presses bus A On the 15th voltage transformer 15, second in press bus B on the 16th voltage transformer 16, first in press bus A on The 18th voltage mutual inducer trolley 18, the Power transfer system on bus B are pressed in 17th voltage mutual inducer trolley 17, second 19。

It is double circuit power supply system that pressure bus B in bus A and second is pressed in first, is respectively the by pressing bus C in third Bus A power supply is pressed in one, is pressure bus B power supply in second by pressure bus D in the 4th.Under normal operating mode, the first inlet wire is disconnected Road device 1 and the second incoming breaker 2 are closed, and pressure bus A by pressing bus C power supply in third, close by the first incoming breaker 1 in first Lock；Third incoming breaker 3 and the 4th incoming breaker 4 closure, pressure bus B is by pressure bus D power supply in the 4th, third in second Incoming breaker 3 is latched.It is pressed in first and presses bus B fanout operation in bus A and second, the 8th busbar breaker 8 closure, the 7th Busbar breaker 7 is without locking.

It mainly includes that power supply normally switches and power supply judging accident that AC system Power transfer system function is pressed in nuclear power ship, Power loss bus is scheduled outage when power supply normally switches, and is failure power loss when power supply judging accident, and system function mainly passes through electricity Source switching system 19 realize, Power transfer system 19 be separately connected the first incoming breaker 1, the second incoming breaker 2, third into Line breaker 3, the 4th incoming breaker 4, the 5th busbar breaker 5, the 6th busbar breaker 6, the 7th busbar breaker 7 and Eight busbar breakers 8.

Bus C power loss is pressed in bus A Upstream section third to press in first, and for pressing bus B to work normally in second into Row explanation can be rapidly switched to press in second and press bus D in bus B the corresponding 4th, power supply be realized in the short time, such as Fig. 3 institute Showing, Fig. 3 is the flow chart that power supply switching is carried out when pressing AC system power failure power loss in atomic-powered ship of the present invention, including with Lower step:

The voltage status amount that bus B is pressed in bus A and second is pressed in S1-1, acquisition first in real time, comprising: voltage magnitude, Working frequency and phase angle, judge in first press bus A and second in press bus B between with the presence or absence of pressure difference, frequency difference and Angular difference, if so, judging bus bar that voltage reduces for power loss bus, the constant bus bar of voltage is normally by the goddess of lightning Line.At this point, detecting that pressing bus A in first is power loss bus, pressure bus B is normal bus bar in second；In other implementations In example, Power transfer system 19, which can also acquire, presses the voltage signal that bus D is pressed in bus C and the 4th, first in third Incoming breaker 1, the second incoming breaker 2, third incoming breaker 3, the 4th incoming breaker 4, the 5th busbar breaker 5, 6th busbar breaker 6, the state of the 7th busbar breaker 7 and the 8th busbar breaker 8, note abnormalities and alarm；

S1-2, when detecting power loss bus, judge whether to receive and press the corresponding first feeder ear G1 hair of bus A in first The scheduled outage signal sent is pressed in bus A and second in detection first if so, judging to press bus A for scheduled outage in first When pressing the 7th busbar breaker 7 between bus B without block signal, then start scheduled outage switching；If it is not, then judging in first Pressure bus A is failure power loss, presses in detection first and presses the 7th busbar breaker 7 between bus B without locking in bus A and second When signal, then startup separator power loss switches.Wherein, scheduled outage is planned power failure, and power loss bus upstream power supply carries out just Normal switching, and failure power loss is then accident power loss, because of power loss bus upstream power failure；

When S2-1, failure power loss, judge to press the frequency difference in bus A and second between pressure bus B whether to be less than in first pre- If frequency difference setting valve, if so, thening follow the steps S2-2, the working frequency phase pressed between bus B in bus A and second is pressed in first Together, pressing in first and pressing the angular difference between bus B in bus A and second is fixed value；

S2-2, judge to press in first when the angular difference between bus B being pressed to be less than default angular difference setting valve in bus A and second, Then enter fast-switching mode, pressed in control first and the 7th busbar breaker 7 between bus B is pressed to close a floodgate in bus A and second, It presses bus A by pressing in second pressure bus D in bus B the corresponding 4th to restore electricity in first, presses the downstream of bus A negative in first Lotus equipment operates normally, and fast switching time is 60ms~80ms, and the pressure bus A power loss time is very short in nuclear power ship first；

S2-3, judge to press in first when the frequency difference between bus B being pressed to be greater than default frequency difference setting valve in bus A and second, Then enter in first under same period switch mode or fast-switching mode press the voltage value of bus A do not restore within a preset time to When rated value, that is, it is switched fast failure, then same period switch mode is switched to by fast-switching mode；

It presses in bus A and second and is pressed between bus B there are frequency difference under S2-4, same period switch mode, in first, pressed in first It presses the angular difference between bus B to change over time in bus A and second, angle correct is carried out to the phase angle for pressing bus A in first, It compensates breaker closing and compensates angle, judge that pressing the angular difference of pressure bus B in bus A and second in compensated first is to successively decrease or pass Increase, if successively decreasing, then carries out synchronization cap-ture, when the angular difference for being decremented to pressure bus B in pressure bus A and second in first is 0 °, control It is pressed in system first and the 7th busbar breaker 7 between bus B is pressed to close a floodgate in bus A and second, pressure bus A is by second in first Pressure bus D restores electricity in pressure bus B the corresponding 4th, and the downstream load equipment of bus A is pressed to operate normally in first；

If being incremented by, and judge that the angular difference for pressing bus B in bus A and second is pressed to be less than default angular difference setting valve in first When, press in control first and the 7th busbar breaker 7 between bus B pressed to close a floodgate in bus A and second, in first pressure bus A by It presses pressure bus D in bus B the corresponding 4th to restore electricity in second, the downstream load equipment of bus A is pressed to operate normally in first, It is pressed in first when same period switching is due to switching and presses the voltage phase difference between bus B close to 0 ° in bus A and second, system generates Dash current reduce；

S2-5, judge to press in first when the angular difference between bus B being pressed to be greater than default angular difference setting valve in bus A and second, The voltage value of bus A is pressed not restore within a preset time to specified in first under synchronization cap-ture failure or same period switch mode When value, i.e. same period handover failure then switchs to switch mode at a slow speed by same period switch mode；

S2-6, it at a slow speed under switch mode, detects in first and presses the voltage attenuation of bus A to the 20%-40% of rated value When, delay 1S judges the 20%-40% for pressing the voltage of bus A whether to decay to rated value in first again, unloads if so, sending Information carrying number controls automatic unloading, pressure bus A is important for downstream in first to the sub-load equipment in the pressure downstream bus A in first Load equipment normal power supply；

S2-7, it presses in first and the 7th busbar breaker 7 between bus B is pressed to close a floodgate in bus A and second, and send load Signal controls boot loader, sub-load equipment is completed automatic load, pressed in first to unloaded sub-load equipment Bus A is pressing the downstream load equipment of bus A just in first by pressing in second pressure bus D in bus B the corresponding 4th to restore electricity Often operation.Bus load unloads automatically, switching can guarantee the normal power supply of important load at a slow speed, while preventing biggish motor certainly Starting current generates impact to nuclear power ship supply network, loads downstream load automatically after switching successfully at a slow speed.

S2-8, as shown in figure 4, Fig. 4 be in atomic-powered ship of the present invention press AC system generation planning have a power failure when carry out electricity The flow chart of source switching；When scheduled outage, is pressed in the corresponding third of pressure bus A in detection first and press bus B in bus C and second Press whether the 5th busbar breaker 5 and the 6th busbar breaker 6 between bus D are closed in corresponding 4th, if so, It presses in bus C and the 4th and is pressed between bus D as paired running in third, execute step S2-9；If it is not, then pressing bus C in third With the 4th in press bus D between be fanout operation, execute step S2-10；

S2-9, judge to press in first and press pressure difference, frequency difference, angular difference between bus D whether all the same in bus A and the 4th, If they are the same, then it is closed the 7th busbar breaker 7 pressed and pressed between bus B in bus A and second in first first, then disconnects first The second incoming breaker 2 between bus C is pressed in middle pressure bus A and third, pressure bus A is by pressing B pairs of bus in second in first It presses bus D to restore electricity in the 4th answered, the downstream load equipment of bus A is pressed to operate normally in first；

S2-10, judge to press in first when pressing the angular difference between bus D in bus A and the 4th as 0, reach same period point, first The second incoming breaker 2 pressed and pressed between bus C in bus A and third in first is disconnected, recloses and presses bus A and the in first The 7th busbar breaker 7 between bus B is pressed in two, in first pressure bus A by press in second pressed in bus B the corresponding 4th it is female Line D restores electricity, and the downstream load equipment of bus A is pressed to operate normally in first.Herein, it should be noted that fanout operation with The 7th busbar breaker 7 of paired running closing or opening is different with the sequence of the second incoming breaker 2, is in order to avoid in a point column When operation, circulation will form between two generators, such case is due to two generators when being an island power supply, point column Two generators are equivalent to two lines when operation, it is possible to can have a ring, when paired running, two generators are equivalent to one Line would not have ring.

Fig. 5 is the module map that the Power transfer system of AC system is pressed in atomic-powered ship of the present invention, as shown in figure 5, this The Power transfer system that AC system is pressed in a kind of atomic-powered ship has also been constructed in invention, and pressure exchanges suitable for atomic-powered ship System, comprising: at least two power supply buses and at least two bus bars, comprising:

Power loss detection module for detecting the power loss bus in each bus bar, and judges power loss bus for scheduled outage Or failure power loss；

Switching judging module compares bus bar when for detecting that power loss bus is failure power loss according to detection pattern In power loss bus and a normal bus bar voltage status amount；

Switching module is quickly cut for the comparison result according to switching judging module according to pre-set priority selection power supply Mold changing formula or same period switch mode or at a slow speed switch mode, power loss bus are switched to by the corresponding power supply buses of normal bus bar It is powered.

Specifically, power loss detection module includes:

Acquisition module, for acquiring the voltage status amount of each bus bar in real time, comprising: voltage magnitude, working frequency with And phase angle；

Power loss judgment module, for the voltage status amount according to the collected each bus bar of acquisition module, judgement respectively by Between goddess of lightning's line whether there is pressure difference, frequency difference and angular difference, if so, judge voltage reduction bus bar for power loss bus, The constant bus bar of voltage is normal bus bar；

Breakdown judge module when detecting power loss bus for power loss judgment module, judges whether to receive power loss bus The scheduled outage signal that corresponding feeder ear is sent detects power loss bus and just if so, judge power loss bus for scheduled outage When between normal bus bar without block signal, then start scheduled outage switching；If it is not, then judge power loss bus for failure power loss, When detecting between power loss bus and normal bus bar without block signal, then startup separator power loss switches.Wherein, scheduled outage is Planned power failure, power loss bus upstream power supply is normally switched, and failure power loss is then accident power loss, because power loss is female Line upstream power failure.

Switching judging module includes:

It is switched fast judgment module, when judging power loss bus for power loss detection module for failure power loss, judges power loss mother Whether the frequency difference between line and a normal bus bar is less than default frequency difference setting valve, and judge power loss bus with normally by electricity Whether the angular difference between bus is less than default angular difference setting valve；

Same period switching judging module, for judging the voltage value of the power loss bus under fast-switching mode whether when default In do not restore to rated value, judge compensated power loss bus and normal bus bar angular difference be successively decrease or be incremented by and Judge whether power loss bus and the angular difference of normal bus bar are less than default angular difference setting valve when angular difference is incremented by；

Switching judging module at a slow speed, for judging the voltage value of the power loss bus under same period switch mode whether when default It is interior not restore to rated value.

Switching module includes:

It is switched fast module, judgment module is switched fast for basis and judges to obtain between power loss bus and normal bus When frequency difference is less than default frequency difference setting valve, then the working frequency between power loss bus and normal bus bar is identical, power loss bus Angular difference between normal bus bar is fixed value；And according to be switched fast judgment module judge to obtain power loss bus with just When angular difference between normal bus is less than default angular difference setting valve, then enter fast-switching mode, control power loss bus with normally by Busbar breaker between goddess of lightning's line is closed a floodgate, and power loss bus is restored electricity by the corresponding power supply buses of normal bus bar, power loss The downstream load equipment of bus operates normally；

Same period switching module, for according to be switched fast judgment module judge to obtain power loss bus and normal bus bar it Between frequency difference is when being greater than default frequency difference setting valve or same period switching judging module judges to obtain power loss bus under fast-switching mode Voltage value when not restoring within a preset time to rated value, then same period switch mode is switched to by fast-switching mode；The same period cuts There are frequency differences under mold changing formula, between power loss bus and normal bus bar, the angular difference between power loss bus and normal bus bar It changes over time, angle correct is carried out to the phase angle of power loss bus, compensation breaker closing compensates angle, is sentenced according to same period switching The angular difference of compensated power loss bus and normal bus bar that disconnected module judges is then to carry out synchronization cap-ture when successively decreasing, When the angular difference for being decremented to power loss bus and normal bus bar is 0 °, the mother between power loss bus and normal bus bar is controlled Breaker closing, power loss bus are restored electricity by the corresponding power supply buses of normal bus bar, and the downstream load of power loss bus is set It is standby to operate normally；According to the angular difference of compensated power loss bus and normal bus bar that same period switching judging module judges It is incremental, and when the angular difference of power loss bus and normal bus bar is less than default angular difference setting valve, control power loss bus and normal Busbar breaker between bus bar is closed a floodgate, and power loss bus is restored electricity by the corresponding power supply buses of normal bus bar, is lost The downstream load equipment of goddess of lightning's line operates normally；

Switching module at a slow speed, for according between the power loss bus and normal bus bar judged with period switching module Angular difference judge to obtain power loss bus under the same period switch mode when being greater than default angular difference setting valve or according to judgment module at a slow speed When voltage value does not restore within a preset time to rated value, then switch mode at a slow speed is switched to by same period switch mode；Switch at a slow speed Under mode, when detecting the 20%-40% of the voltage attenuation of power loss bus to rated value, delay judges the electricity of power loss bus again Whether pressure decays to the 20%-40% of rated value, if so, the sub-load for sending unloader signal to power loss bus downstream is set It is standby, automatic unloading is controlled, power loss bus is downstream important load equipment normal power supply；Between power loss bus and normal bus bar Busbar breaker close a floodgate, and send load signal to unloaded sub-load equipment, control boot loader, part is negative Lotus equipment completes automatic load, and power loss bus is restored electricity by the corresponding power supply buses of normal bus bar, under power loss bus Load equipment is swum to operate normally.Wherein, judgement is to judge the signal of voltage attenuation with the presence or absence of false alarm again for delay Situation, preferably delay 1S.

In addition, Power transfer system further include:

Judgment module being run, when for detecting that power loss bus is scheduled outage according to power loss detection module, detecting power loss Busbar breaker between the corresponding power supply buses of bus power supply buses corresponding with normal bus bar and whether it is closed at, If so, be paired running between the corresponding power supply buses of power loss bus power supply buses corresponding with normal bus bar, if it is not, It is then fanout operation between the corresponding power supply buses of power loss bus power supply buses corresponding with normal bus bar；

Power supply module judges to obtain the corresponding power supply buses of power loss bus and normal bus bar for running judgment module When being paired running between corresponding power supply buses, judge between power loss bus power supply buses corresponding with normal bus bar Whether pressure difference, frequency difference, angular difference are all the same, and if they are the same, then the mother being closed between power loss bus and normal bus bar first is disconnected Road device, then the incoming breaker between power loss bus and corresponding power supply buses is disconnected, power loss bus is by normal bus bar pair The power supply buses power supply answered, the downstream load equipment of power loss bus operate normally；

And for run judgment module judge to obtain the corresponding power supply buses of power loss bus it is corresponding with normal bus bar Power supply buses between be fanout operation when, judge the angular difference of power loss bus power supply buses corresponding with normal bus bar for 0 When, reach same period point, the first incoming breaker between disconnection power loss bus and corresponding power supply buses, recloses power loss bus With the busbar breaker between normal bus bar, power loss bus is powered by the corresponding power supply buses of normal bus bar, power loss The downstream load equipment of bus operates normally.

By the power-supply switching method and system for implementing to press AC system in a kind of atomic-powered ship of the invention, have with It is lower the utility model has the advantages that

1, the present invention carries out adaptability design for pressure AC system in atomic-powered ship, and Power transfer system is applied to Nuclear power ship improves the safety and reliability of nuclear power ship supply network；

2, the present invention is switched using quick power switching, the same period, switches the method combined at a slow speed, by power loss bus Compared with normal bus bar voltage magnitude, working frequency and phase angle, switching mode is selected according to priority, guarantees electricity Source switches coverage and minimizes；

3, the present invention designs switching mode at a slow speed according to ship platform electrical network feature, negative by unloading bus downstream automatically Lotus and delay prevent the starting current of motor self-starting generation in handoff procedure is excessive from drawing the ship supply network that collapses, expand accident Range；

4, the present invention can overcome the switching of Conventional marine generation platform internal electric source to dock system disturbance caused by micro-capacitance sensor Problem improves the stability of micro-capacitance sensor；

5, " remnant voltage switch " motor self-starting electric current problems of too in the process is solved in existing fast handoff technique；

6, when solving switching because residual voltage and power supply phase angle difference it is excessive caused by dash current；

7, it solves because micro-capacitance sensor stability is poor, causes to be switched fast the lower problem of success rate, enhance the reliable of power supply Property.

The present invention be illustrated by specific embodiment, it will be appreciated by those skilled in the art that, do not departing from this hair In the case where bright range, various transformation and equivalent substitute can also be carried out to the present invention.In addition, being directed to particular condition or specific feelings Condition can do various modifications to the present invention, without departing from the scope of the present invention.Therefore, the present invention is not limited to disclosed tool Body embodiment, and should include the whole embodiments fallen within the scope of the appended claims.

Claims (10)

1. pressing the power-supply switching method of AC system in a kind of atomic-powered ship, the pressure exchange system suitable for the atomic-powered ship System, comprising: at least two power supply buses and at least two bus bars, which comprises the following steps:

Power loss bus in S1, detection bus bar, and judge the power loss bus for scheduled outage or failure power loss；

When S2, failure power loss, according to the comparison result of the voltage status amount of the power loss bus and a normal bus bar, according to Pre-set priority selects quick power switching mode or same period switch mode or switch mode, the power loss bus switch at a slow speed It is powered by the corresponding power supply buses of the normal bus bar.

2. pressing the power-supply switching method of AC system in atomic-powered ship according to claim 1, which is characterized in that described Step S1 includes:

S1-1, the voltage status amount for acquiring each bus bar in real time, comprising: voltage magnitude, working frequency and phase angle, judgement It whether there is pressure difference, frequency difference and angular difference between each bus bar, if so, judging the bus bar that voltage reduces for power loss mother Line, the constant bus bar of voltage are normal bus bar；

S1-2, when detecting the power loss bus, judge whether to receive the meter that the corresponding feeder ear of the power loss bus is sent Draw power cut signal, if so, judge the power loss bus for scheduled outage, detect the power loss bus with it is described normally by the goddess of lightning When between line without block signal, then start scheduled outage switching；If it is not, then judging that the power loss bus for failure power loss, detects When between the power loss bus and the normal bus bar without block signal, then startup separator power loss switches.

3. pressing the power-supply switching method of AC system in atomic-powered ship according to claim 1, which is characterized in that described Step S2 includes:

When S2-1, failure power loss, judge whether the frequency difference between the power loss bus and a normal bus bar is less than default frequency Poor setting valve, if so, S2-2 is thened follow the steps, the working frequency phase between the power loss bus and the normal bus bar Together, the angular difference between the power loss bus and the normal bus bar is fixed value；

S2-2, when judging that angular difference between the power loss bus and the normal bus bar is less than default angular difference setting valve, then Into fast-switching mode, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, described Power loss bus is restored electricity by the corresponding power supply buses of the normal bus bar, and the downstream load equipment of the power loss bus is just Often operation.

4. pressing the power-supply switching method of AC system in atomic-powered ship according to claim 3, which is characterized in that described Step S2 further include:

S2-3, when judging that frequency difference between the power loss bus and the normal bus bar is greater than default frequency difference setting valve, then The voltage value of the power loss bus does not restore within a preset time to specified under into same period switch mode or fast-switching mode When value, then same period switch mode is switched to by fast-switching mode；

Under S2-4, same period switch mode, there are frequency difference between the power loss bus and the normal bus bar, the power loss is female Angular difference between line and the normal bus bar changes over time, and carries out angle correct to the phase angle of the power loss bus, Compensate breaker closing and compensate angle, judge the compensated power loss bus and the normal bus bar angular difference be successively decrease or It is incremented by, if successively decreasing, then carries out synchronization cap-ture, the angular difference for being decremented to the power loss bus and the normal bus bar is 0 ° When, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, and the power loss bus is by described The normal corresponding power supply buses of bus bar restore electricity, and the downstream load equipment of the power loss bus operates normally；

If be incremented by, and judge that the angular difference of the power loss bus and the normal bus bar is less than default angular difference setting valve, The busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, and the power loss bus is by described normal The corresponding power supply buses of bus bar restore electricity, and the downstream load equipment of the power loss bus operates normally.

5. pressing the power-supply switching method of AC system in atomic-powered ship according to claim 4, which is characterized in that described Step S2 further include:

S2-5, judge when angular difference between the power loss bus and the normal bus bar is greater than default angular difference setting valve or When the voltage value of the power loss bus does not restore within a preset time to rated value under same period switch mode, then mould is switched by the same period Formula switchs to switch mode at a slow speed；

S2-6, at a slow speed under switch mode, when detecting the 20%-40% of the voltage attenuation of the power loss bus to rated value, prolong Shi Zaici judges whether the voltage of the power loss bus decays to the 20%-40% of rated value, if so, sending unloader signal extremely The sub-load equipment in power loss bus downstream, controls automatic unloading, the power loss bus be downstream important load equipment just Often power supply；

Busbar breaker between S2-7, the power loss bus and the normal bus bar is closed a floodgate, and sends load signal extremely Unloaded sub-load equipment controls boot loader, and the sub-load equipment completes automatic load, and the power loss is female Line is restored electricity by the corresponding power supply buses of the normal bus bar, and the downstream load equipment of the power loss bus is normally transported Row.

6. pressing the power-supply switching method of AC system in atomic-powered ship according to claim 1, which is characterized in that described Step S2 further include:

When S2-8, scheduled outage, the confession corresponding with the normal bus bar of the corresponding power supply buses of the power loss bus is detected Busbar breaker between goddess of lightning's line and whether be closed at, if so, the corresponding power supply buses of the power loss bus with it is described It is paired running between the corresponding power supply buses of normal bus bar, executes step S2-9；If it is not, then the power loss bus is corresponding Power supply buses power supply buses corresponding with the normal bus bar between be fanout operation, execute step S2-10；

S2-9, judge pressure difference between power loss bus power supply buses corresponding with the normal bus bar, frequency difference, angular difference It is whether all the same, if they are the same, then the busbar breaker being closed first between the power loss bus and the normal bus bar, then The incoming breaker between the power loss bus and corresponding power supply buses is disconnected, the power loss bus is by described normally by the goddess of lightning The corresponding power supply buses power supply of line, the downstream load equipment of the power loss bus operate normally；

S2-10, when judging the angular difference of power loss bus power supply buses corresponding with the normal bus bar for 0, reach same Phase point disconnects the incoming breaker between the power loss bus and corresponding power supply buses first, recloses the power loss bus With the busbar breaker between the normal bus bar, the power loss bus is corresponding for the goddess of lightning by the normal bus bar The downstream load equipment of line power supply, the power loss bus operates normally.

7. pressing the Power transfer system of AC system in a kind of atomic-powered ship, the pressure exchange system suitable for the atomic-powered ship System, comprising: at least two power supply buses and at least two bus bars characterized by comprising

Power loss detection module for detecting the power loss bus in each bus bar, and judges the power loss bus for scheduled outage Or failure power loss；

Switching judging module, when for detecting that the power loss bus is failure power loss according to the detection pattern, described in comparison The voltage status amount of power loss bus and a normal bus bar in bus bar；

Switching module is quickly cut for the comparison result according to the switching judging module according to pre-set priority selection power supply Mold changing formula or same period switch mode or at a slow speed switch mode, the power loss bus switch to corresponding by the normal bus bar Power supply buses are powered.

8. pressing the Power transfer system of AC system in atomic-powered ship according to claim 7, which is characterized in that described Power loss detection module includes:

Acquisition module, for acquiring the voltage status amount of each bus bar in real time, comprising: voltage magnitude, working frequency and phase Parallactic angle；

Power loss judgment module, for the voltage status amount according to the collected each bus bar of the acquisition module, judgement respectively by Between goddess of lightning's line whether there is pressure difference, frequency difference and angular difference, if so, judge voltage reduction bus bar for power loss bus, The constant bus bar of voltage is normal bus bar；

Breakdown judge module when detecting the power loss bus for the power loss judgment module, judges whether to receive described The scheduled outage signal that the corresponding feeder ear of power loss bus is sent, if so, judging that the power loss bus for scheduled outage, detects When between the power loss bus and the normal bus bar without block signal, then start scheduled outage switching；If it is not, then judging The power loss bus is failure power loss, when detecting between the power loss bus and the normal bus bar without block signal, then The switching of startup separator power loss.

9. pressing the Power transfer system of AC system in atomic-powered ship according to claim 7, which is characterized in that described Switching judging module includes:

It is switched fast judgment module, when judging the power loss bus for the power loss detection module for failure power loss, judges institute It states whether the frequency difference between power loss bus and a normal bus bar is less than default frequency difference setting valve, and judges that the power loss is female Whether the angular difference between line and the normal bus bar is less than default angular difference setting valve；

Same period switching judging module, for judging the voltage value of the power loss bus under fast-switching mode whether when default It is interior not restore to rated value, judge that the angular difference of the compensated power loss bus and the normal bus bar is to successively decrease or pass Increase and judges whether the power loss bus and the angular difference of the normal bus bar are less than preset angle when the angular difference is incremented by Poor setting valve；

Switching judging module at a slow speed, for judging the voltage value of the power loss bus under same period switch mode whether when default It is interior not restore to rated value.

10. pressing the Power transfer system of AC system in atomic-powered ship according to claim 9, which is characterized in that institute Stating switching module includes:

It is switched fast module, judges to obtain the power loss bus and the normal mother for being switched fast judgment module according to When frequency difference between line is less than default frequency difference setting valve, then the work frequency between the power loss bus and the normal bus bar Rate is identical, and the angular difference between the power loss bus and the normal bus bar is fixed value；And it is switched fast according to described When judgment module judges to obtain the angular difference between the power loss bus and the normal bus and is less than default angular difference setting valve, then into Enter fast-switching mode, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, the mistake Goddess of lightning's line is restored electricity by the corresponding power supply buses of the normal bus bar, and the downstream load equipment of the power loss bus is normal Operation；

Same period switching module, for be switched fast according to judgment module judge to obtain the power loss bus and it is described normally by When frequency difference between goddess of lightning's line is greater than default frequency difference setting valve or the same period switching judging module judges to obtain and described quickly cuts When the voltage value of the power loss bus does not restore within a preset time to rated value under mold changing formula, then switched to by fast-switching mode Same period switch mode；Under same period switch mode, there are frequency difference, the mistakes between the power loss bus and the normal bus bar Angular difference between goddess of lightning's line and the normal bus bar changes over time, and carries out angle school to the phase angle of the power loss bus Just, compensation breaker closing compensates angle, and the compensated power loss judged according to the same period switching judging module is female The angular difference of line and the normal bus bar is then to carry out synchronization cap-ture when successively decreasing, be decremented to the power loss bus and it is described just When the angular difference of normal bus bar is 0 °, the busbar breaker controlled between the power loss bus and the normal bus bar is closed Lock, the power loss bus are restored electricity by the corresponding power supply buses of the normal bus bar, and the downstream of the power loss bus is negative Lotus equipment operates normally；The compensated power loss bus that is judged according to the same period switching judging module and it is described just The angular difference of normal bus bar is incremental, and the angular difference of the power loss bus and the normal bus bar is less than default angular difference adjusting When value, the busbar breaker controlled between the power loss bus and the normal bus bar is closed a floodgate, and the power loss bus is by institute It states the corresponding power supply buses of normal bus bar to restore electricity, the downstream load equipment of the power loss bus operates normally；

Switching module at a slow speed, the power loss bus for being judged according to the same period switching module and described normally by electricity Judge to obtain the same period switch mode when angular difference between bus is greater than default angular difference setting valve or according to the judgment module at a slow speed Under the voltage value of power loss bus when not restoring within a preset time to rated value, then switch to cut at a slow speed by same period switch mode Mold changing formula；At a slow speed under switch mode, when detecting the 20%-40% of the voltage attenuation of the power loss bus to rated value, delay Judge whether the voltage of the power loss bus decays to the 20%-40% of rated value again, if so, sending unloader signal to institute The sub-load equipment in power loss bus downstream is stated, automatic unloading is controlled, the power loss bus is that important load equipment in downstream is normal Power supply；Busbar breaker between the power loss bus and the normal bus bar is closed a floodgate, and sends load signal to having unloaded The sub-load equipment of load, controls boot loader, and the sub-load equipment completes automatic load, the power loss bus by The corresponding power supply buses of the normal bus bar restore electricity, and the downstream load equipment of the power loss bus operates normally.