CN208753742U - Emergency power supply shares circuit, nuclear power station distribution board and emergency power supply system - Google Patents
Emergency power supply shares circuit, nuclear power station distribution board and emergency power supply system Download PDFInfo
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- CN208753742U CN208753742U CN201821236000.1U CN201821236000U CN208753742U CN 208753742 U CN208753742 U CN 208753742U CN 201821236000 U CN201821236000 U CN 201821236000U CN 208753742 U CN208753742 U CN 208753742U
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Abstract
The utility model belongs to million kilowatt nuclear power station power supply technique field, provides a kind of emergency power supply and shares circuit, nuclear power station distribution board and emergency power supply system；It includes: power distribution cabinet, at least one nuclear power unit and at least one distribution branch that the emergency power supply, which shares circuit,；Power distribution cabinet includes a distribution bus, a termination distribution bus of every distribution branch, the power supply buses of each nuclear power unit of another termination of every distribution branch；Wherein every distribution branch includes: the switch control unit for controlling the conducting of distribution branch or shutdown；Switch control unit includes a contactor and a breaker, and contactor is serially connected in distribution branch, a termination distribution branch of breaker, the other end ground connection of breaker；It can solve the problems, such as that the emergency power supply of nuclear power station in traditional technology can only maintain that extremely short power-on time, nuclear power station operation cost is high and nuclear plant safety is junior by the utility model.
Description
Technical field
The utility model belongs to million kilowatt nuclear power station power supply technique field more particularly to a kind of shared electricity of emergency power supply
Road, nuclear power station distribution board and emergency power supply system.
Background technique
The emergency power supply of nuclear power station have the function of for the safe and stable operation of nuclear power station it is particularly important, due to nuclear power station
The power of the nuclear power energy of generation is very big, and nuclear power generating equipment can also generate a large amount of nuke rubbish during the work time；If nuclear power is set
It is standby to lose power supply suddenly, then nuclear power station just will appear serious nuclear plant safety accident, make the life and health and ecology of people
Environment is by earthshaking loss；By taking the Nuclear Power Accident of East Asia state as an example, since nuclear power unit is being subject to natural calamity
After lose electrical source of power and DC power supply, and emergency power supply is unable to maintain that the operation steady in a long-term of nuclear power generating equipment, leads to core
Radioactive substance leaks in power station, to natural ecology causes extremely bad influence；Therefore in the current construction of nuclear power station
In the process, emergency power supply has become the overriding concern factor of nuclear plant safety stable operation.
However in the actual moving process of nuclear power station, the reason of nuclear power station loses distribution have it is varied, such as from
Right disaster, cause of war etc.；In the conventional technology, it after nuclear power unit loses internal electric source and external power supply, generallys use outer
The DC suppling equipment (such as battery) in portion to provide emergency power supply to nuclear power generating equipment, to maintain the normal operation of nuclear power generating equipment；
But since the electric power of nuclear power generating equipment is larger, the limited energy that DC suppling equipment is stored, therefore pass through the straight of outside
The power-on time that stream power supply unit can only maintain nuclear power generating equipment extremely short, such as 1 hour, are unable to satisfy the processing of nuclear plant safety accident
Standard；And it needs that DC suppling equipment additionally is installed in nuclear power station, causes the structure of nuclear power station electric system increasingly complex,
The operation cost of nuclear power station is substantially increased, can not be generally applicable in.
Utility model content
The utility model provides a kind of emergency power supply and shares circuit, nuclear power station distribution board and emergency power supply system, it is intended to solve
Certainly traditional technology needs to install additional DC suppling equipment in nuclear power station to provide emergency power supply, only by the emergency power supply
It can maintain extremely short power-on time, and the problem that nuclear power station operation cost is high, nuclear power station processing power loss accident ability is lower.
The utility model first aspect provides a kind of emergency power supply and shares circuit, comprising: power distribution cabinet, N number of nuclear power unit with
And M distribution branch；
The power distribution cabinet includes a distribution bus, and a termination distribution bus of every distribution branch is matched described in every
The power supply buses of each nuclear power unit of another termination of electric branch；
Wherein, every distribution branch includes: the switch control for controlling the distribution branch conducting or shutdown
Unit；The switch control unit includes a contactor and a breaker, and the contactor is serially connected in the distribution branch, institute
State a termination distribution branch of breaker, the other end ground connection of the breaker；
The N is the positive integer more than or equal to 1, and the M is the positive integer more than or equal to 1.
In one of them embodiment, the model of the contactor are as follows: FG2-1250A, the model of the breaker are as follows:
NSX160F-3P3D。
In one of them embodiment, N=2, M=4,2 nuclear power units are respectively No.1 nuclear power unit and No. two cores
Motor group, each described nuclear power unit include A column power supply buses and B column power supply buses, and 4 distribution branches include: first to match
Electric branch, the second distribution branch, third distribution branch and the 4th distribution branch；
The one termination distribution bus of the first distribution branch, the A of another termination No. two nuclear power units, which is arranged, to be supplied
Goddess of lightning's line；
The one termination distribution bus of the second distribution branch, the A of another termination No.1 nuclear power unit, which is arranged, to be supplied
Goddess of lightning's line；
The one termination distribution bus of the third distribution branch, the B of another termination No.1 nuclear power unit, which is arranged, to be supplied
Goddess of lightning's line；
The one termination distribution bus of the 4th distribution branch, the B of another termination No. two nuclear power units, which is arranged, to be supplied
Goddess of lightning's line.
In one of them embodiment, further includes:
The one termination distribution bus, another termination diesel-driven generator, the stand-by power supply branch for output is ready for use power supply.
In one of them embodiment, the stand-by power supply branch includes a breaker JS2；
Wherein, the breaker JS2 is serially connected in the stand-by power supply branch.
In one of them embodiment, the model NSX250F of the breaker JS2.
In one of them embodiment, the power distribution cabinet includes M electric panel room and 1 protection chamber, wherein the M
Electric panel room and the protection chamber are electrically connected by the distribution bus；
Wherein, each described electric panel room includes a nuclear power switch K1, and every distribution branch is opened by the nuclear power
It closes K1 and connects the distribution bus；
The protection chamber includes a nuclear power switch K2, and the stand-by power supply branch meets institute by the nuclear power switch K2
State distribution bus.
In one of them embodiment, the protection chamber a further include: control switch；
Wherein, a termination stand-by power supply branch of the control switch, the other end ground connection of the control switch.
The utility model second aspect provides a kind of nuclear power station distribution board, including the shared electricity of emergency power supply as described above
Road.
The utility model third aspect provides a kind of emergency power supply system, including nuclear power station distribution board as described above.
It is shared in circuit in above-mentioned emergency power supply, it includes at least one nuclear power unit, distribution which, which shares circuit,
Cabinet and at least one distribution branch, power distribution cabinet include a distribution bus, a termination distribution bus of every distribution branch, and every
The power supply buses of each nuclear power unit of another termination of distribution branch, are realized between different nuclear power units by the distribution bus
Power supply is shared, since the power supply buses of different nuclear power units are electrically connected by distribution bus, different nuclear powers in nuclear power station
Power supply between unit can be mutually spare, and the power supply in same nuclear power unit between different power supply buses also can be mutually standby
With；When power loss accident occurs for nuclear power station, if Loss of power failure occur in the power supply buses of a certain specific nuclear power unit, it can be passed through
The power supply buses that it is in the nuclear power unit of normal operating phase provide emergency power supply to the power supply buses of failure, to ensure nuclear power
The lasting of equipment, stable operation；And it can be controlled separately conducting or the pass of each distribution branch by switch control unit
It is disconnected, and then ensure the operational safety of each nuclear power unit；Therefore circuit is shared in emergency power supply provided by the utility model
In, the existing power supply of nuclear power station is taken full advantage of to realize the mutual spare of power supply between different nuclear power units, without installing it
Its additional DC suppling equipment significantly reduces the operation cost of nuclear power unit, and by operating normally center motor
The power supply buses of group can persistently provide powerful emergency power supply to the power supply buses of failure nuclear power unit, to ensure nuclear power generating equipment
Can long-time steady operation, further improve nuclear power station reply Loss of power failure processing capacity, reduce nuclear plant safety
The incidence of accident；When can only maintain extremely short power supply to efficiently solve the emergency power supply in traditional technology in nuclear power station
Between, can not ensure the operation steady in a long-term of nuclear power generating equipment and nuclear power station operation cost is higher, nuclear plant safety prevention grade compared with
Low problem.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, for those skilled in the art, without creative efforts, can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the circuit structure diagram that a kind of emergency power supply provided by the embodiment of the utility model shares circuit；
Fig. 2 is the circuit structure diagram that another emergency power supply provided by the embodiment of the utility model shares circuit；
Fig. 3 is the circuit structure diagram that another emergency power supply provided by the embodiment of the utility model shares circuit；
Fig. 4 is the circuit structure diagram that another emergency power supply provided by the embodiment of the utility model shares circuit；
Fig. 5 is a kind of function structure chart of nuclear power station distribution board provided by the embodiment of the utility model；
Fig. 6 is a kind of function structure chart of emergency power supply system provided by the embodiment of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Fig. 1 shows the circuit structure that emergency power supply provided by the embodiment of the utility model shares circuit 10, for the ease of
Illustrate, illustrate only part relevant to the utility model embodiment, details are as follows:
As shown in Figure 1, it includes: power distribution cabinet 101, N number of nuclear power unit and M distribution branch that emergency power supply, which shares circuit 10,
Road 1021,1022 ... 102M can be realized equilibrium assignment and the control of electric energy by power distribution cabinet 101；Wherein, power distribution cabinet 101 wraps
Include a distribution bus L, a termination distribution bus L of every distribution branch, each nuclear power unit of another termination of every distribution branch
Power supply buses；It should be noted that in a nuclear power unit, there are at least one power supply buses；Such as exist in nuclear power unit
2 or 3 power supply buses pass through the power supply buses in nuclear power unit when nuclear power unit generates nuclear power station by nuclear fission
Powerful nuclear power energy is exported, normal working condition is in by the core electrical energy drive nuclear power generating equipment；And nuclear power unit
It is to work independently from each other between different power supply buses there may be a plurality of power supply buses, different confession in same nuclear power unit
Goddess of lightning's line is likely to be at different operating statuses, if power supply buses failure operating status therein, the confession of the failure
Goddess of lightning's line does not interfere with the power supply buses of other normal operations in same nuclear power unit.
In the utility model embodiment, sharing circuit 10 due to emergency power supply includes at least one nuclear power unit, and is led to
The distribution bus L crossed in power distribution cabinet 101 can realize in nuclear power unit the electric connection between different power supply buses, in nuclear power unit
Different power supply buses between can be realized the mutual spare of power supply, when the power supply buses of some nuclear power station unit station in nuclear power station
When there is Loss of power failure, then the power supply that is operated normally in other normal power supply buses and different nuclear power units in same nuclear power unit
Any one power supply buses can provide emergency power supply to the power supply buses of failure in bus the two, to ensure that nuclear power generating equipment can
Maintain normal operating status；For example, the emergency power supply in conjunction with shown in Fig. 1 shares the circuit structure of circuit, first nuclear power
When Loss of power failure occurs in the power supply buses JH1 of unit, the power supply buses JH2 or second core of first nuclear power unit can be passed through
The power supply buses JH3 of motor group provides emergency power supply to the power supply buses JH1 of first nuclear power unit in time, due to first
The power supply buses JH3 of the power supply buses JH2 of nuclear power unit and second nuclear power unit belongs to the internal electric source of nuclear power station, and
And nuclear power energy caused by nuclear power unit is belonged to by the emergency power supply that power supply buses JH2 or power supply buses JH3 are exported,
It is with great power, therefore, is able to maintain that length by the emergency power supply that power supply buses JH2 or power supply buses JH3 is exported
Time power-on time avoids causing nuclear power due to Loss of power failure so that power supply buses JH1 is able to maintain that stable working condition
It stands safety accident.
Wherein, every distribution branch 102 includes switch control unit 103, is matched by the way that switch control unit 103 is controllable
The electric conducting of branch 102 or shutdown；Switch control unit 103 includes that a contactor JA and a breaker JS1, contactor JA are concatenated
In distribution branch 102, a termination distribution branch 102 of breaker JS1, the other end of breaker JS1 is grounded GND；By opening
The conducting of each distribution branch 102 or shutdown can be controlled respectively by closing control unit 103, and then make the different power supplies of nuclear power unit
It can work independently, be independent of each other between bus, reduce bad shadow caused by electric system of the Loss of power failure to nuclear power station
It rings；Specifically, first distribution branch 1021 wraps by taking first distribution branch 1021 in the utility model embodiment Fig. 1 as an example
Switch control unit 1031 is included, switch control unit 1031 includes contactor JA-1 and breaker JS1-1；When contactor JA-1 is led
When logical and breaker JS1-1 is disconnected, which is turned on, and power supply buses JH1 passes through first at this time
Distribution branch 1021 meets distribution bus L, when first distribution branch 1021 is connected, if there is Loss of power failure in power supply buses JH1,
Then power supply buses JH1 can access emergency power supply by first distribution branch 1021, to drive nuclear power generating equipment that can run well；
If power supply buses JH1 is in normal power supply state, power supply buses JH1 can export emergency power supply to the power supply buses of failure,
To realize the shared of emergency power supply between different power supply buses；When contactor JA-1 disconnect when first distribution branch 1021 then
In off state, when breaker JS1-1 closure, first distribution branch 1021 is then in short-circuit condition, if first distribution
Branch 1021 is in off state or short-circuit condition, and first distribution branch 1021 does not all turn on, and power supply buses JH1 can not
Access or output emergency power supply, power supply buses JH1 are in independent operating state, are supplied at this time just for power supply buses JH1
Electric protection；Therefore, it is shared in circuit 10 in emergency power supply, each distribution branch can be controlled by switch control unit 103 respectively
The conducting of road 102 or shutdown, different power supply buses can also may be implemented between emergency power supply in autonomous working state
It is mutual spare, to greatly maintain the safe operation of nuclear power station, simplify the circuit structure of nuclear power station electric system, drop
The low operation cost of nuclear power station.
As an alternative embodiment, in the switch control unit 103, the model FG2- of contactor JA
The model NSX160F-3P3D of 1250A, breaker JS1.
It should be noted that the N is the positive integer more than or equal to 1, the M is just whole more than or equal to 1
Number；Those skilled in the art can set the value of N and M in specific nuclear power station, such as N is 2, M 4；Therefore it is answered above-mentioned
Urgent telegram source is shared in circuit 10, and the number of nuclear power unit and the number of distribution branch can arbitrarily be set in actual application
Fixed, compatibility and flexibility are all extremely strong, and emergency power supply, which shares circuit 10, can be widely applicable in different types of nuclear power station,
Applicable generality is stronger.
In the utility model embodiment, the power supply buses of N number of nuclear power unit realize electrical connection by distribution bus L, that
It, then can be by the power supply buses of other normal operations to failure when Loss of power failure occurs in some power supply buses in nuclear power station
Power supply buses emergency power supply is provided, to drive the nuclear power generating equipment in nuclear power station that can operate normally, therefore above-mentioned emergency power supply
Shared circuit 10 realize it is mutual spare between different nuclear power unit power supplys, and due to the electric energy in each power supply buses
For the nuclear power energy that nuclear power unit generates, there is biggish power, which shares circuit 10 and take full advantage of in nuclear power station
Existing equipment provides powerful emergency power supply, that is, maintain longer power-on time save again the operation of nuclear power station at
This, simplifies the circuit structure of nuclear power station electric system；Simultaneously in every distribution branch 102, pass through switch control unit 103
Every conducting of distribution branch 102 or off state can be controlled respectively, and then make to realize the function mutually powered between power supply buses
Can, it so that power supply buses is in independent working condition, prevent the Loss of power failure in each power supply buses to nuclear power station
Electric system cause larger damage；It is realized to which the utility model embodiment takes full advantage of in nuclear power station existing equipment
Emergency power supply is mutual spare between different power supply buses, without adding additional DC suppling equipment, reduces nuclear power station
Operation cost, and powerful emergency power supply is provided by the electric energy in nuclear power unit, nuclear power generating equipment can be maintained longer
Power-on time, and then nuclear power station is improved for the processing capacity of complicated Loss of power failure, reduce the hair of nuclear plant safety accident
Raw rate；The operation cost for efficiently solving nuclear power station in traditional technology is high, can only maintain extremely short power supply by emergency power supply
Time leads to the junior problem of nuclear plant safety.
As an alternative embodiment, share in circuit 10 in emergency power supply, work as N=2, when M=4,
Fig. 2 shows emergency power supply provided by the embodiment of the utility model share circuit 10 another circuit structure,
Emergency power supply shown by Fig. 2 is shared in circuit 10, and 2 nuclear power units are respectively No.1 nuclear power unit 1LH and No. two nuclear power units
2LH, each nuclear power unit include A column power supply buses and B column power supply buses；Specifically, No.1 nuclear power unit 1LH includes A column
Power supply buses 1LHA001TB and B column power supply buses 1LHB001TB, No. two nuclear power unit 2LH include A column power supply buses
2LHA001TB and B column power supply buses 2LHB001TB；Therefore each nuclear power unit (No.1 nuclear power unit 1LH and No. two nuclear powers
Unit 2LH) in, can transmit nuclear power energy by two power supply buses (A column power supply buses and B column power supply buses), and this two
Power supply buses are powered independently of each other, if wherein Loss of power failure occur in a certain power supply buses, are not interfered with other normal
The power supply buses of operation, to be more advantageous to the safe and stable operation of No.1 nuclear power unit 1LH and No. two nuclear power unit 2LH.
Wherein, 4 distribution branches include: the first distribution branch 1021, the second distribution branch 1022, third distribution branch
1023 and the 4th distribution branch 1024；One termination distribution bus L of the first distribution branch 1021, the first distribution branch 1021
No. two nuclear power units of another termination A column power supply buses 2LHA001TB；One termination distribution bus of the second distribution branch 1022
L, the A column power supply buses 1LHA001TB of another termination No.1 nuclear power unit of the second distribution branch 1022；Third distribution branch
A 1023 termination distribution bus L, the B column power supply buses of another termination No.1 nuclear power unit of third distribution branch 1023
1LHB001TB；One termination distribution bus L of the 4th distribution branch 1024, No. two cores of another termination of the 4th distribution branch 1024
The B column power supply buses 2LHB001TB of motor group.
In the utility model embodiment, nuclear power station includes 2 nuclear power station unit stations: No.1 nuclear power unit 1LH and two in total
Number nuclear power unit 2LH includes 2 power supply buses in each nuclear power station unit station, and it includes 4 independences that emergency power supply shares circuit in total
The power supply buses of operation: 1LHA001TB, 1LHB001TB, 2LHA001TB and 2LHB001TB, this 4 power supply buses pass through
Distribution bus L is electrically connected, this 4 power supply buses can realize the mutual spare of emergency power supply, to ensure that nuclear power generating equipment exists
Occur also maintain longer parallel-adder settle-out time when Loss of power failure；For example, when the A column power supply buses of No. two nuclear power units
When Loss of power failure occurs in 2LHA001TB, the nuclear power energy in the B column power supply buses 2LHB001TB of No. two nuclear power units is selected at this time
As emergency power supply, the conducting of the first distribution branch 1021, the 4th distribution branch 1024 is also switched on, then the B column of No. two nuclear power units
Nuclear power in power supply buses 2LHB001TB can pass sequentially through the 4th distribution branch 1024, distribution bus L and the first distribution branch
1021, and the A column power supply buses 2LHA001TB of No. two nuclear power units is eventually arrived at, A column power supply can be maintained by the emergency power supply
The longer power-on time of bus 2LHA001TB；It is similar, in the present invention, if the power supply of any one nuclear power unit
When Loss of power failure occurs in bus, then the nuclear power that power supply buses can be operated normally in same nuclear power unit can be with different nuclear power units
Middle optional one of nuclear power energy for operating normally power supply buses is used as emergency power supply, to maintain the long-time of nuclear power generating equipment to power；From
And the utility model embodiment realizes the mutual spare of power supply between 4 power supply buses, the internal electric source of nuclear power unit is as answering
Urgent telegram source reduces operation cost and greatly extends the power-on time of nuclear power generating equipment, enhances nuclear power station reply power loss
The processing capacity of failure has ensured the stable operation of No.1 nuclear power unit 1LH and No. two nuclear power unit 2LH, avoids nuclear power peace
The generation of full accident.
As a preferred embodiment, Fig. 3 shows the shared electricity of emergency power supply provided by the embodiment of the utility model
Another circuit structure on road 10, the emergency power supply compared to the circuit structure that emergency power supply in Fig. 1 shares circuit 10, in Fig. 3
Shared circuit 10 further includes stand-by power supply branch 301；A wherein termination distribution bus L of stand-by power supply branch 301, stand-by power supply
Another termination diesel-driven generator 302 of branch 301, diesel-driven generator 302 produce stable backup power source, when nuclear power unit goes out
When existing Loss of power failure, diesel-driven generator 302 can be enabled, the backup power source, the backup power source are exported by stand-by power supply branch 301
Emergency power supply as nuclear power generating equipment；Specifically, as shown in figure 3, since stand-by power supply branch 301 and each distribution branch pass through
Distribution bus is electrically connected, and it is shared to can be realized emergency power supply between diesel-driven generator 302 and each nuclear power unit；At this
In utility model embodiment, diesel-driven generator 302 belongs to external DC suppling equipment, and in nuclear power unit power supply buses electricity
The existing nuclear power energy of nuclear power station can be belonged to, therefore the shared circuit 10 of emergency power supply realizes diesel-driven generator 302 and each item is powered
Power supply is mutual spare between bus, and emergency power supply at this time not only can be from the core of each power supply buses in nuclear power unit
Electric energy, and can derive from the backup power source generated of diesel-driven generator 302, thus in nuclear power station emergency power supply source formation
With varied, security performance is higher, when complicated Loss of power failure occurs for nuclear power station, by nuclear power unit for the goddess of lightning
Line and diesel engine 302 can provide emergency power supply simultaneously, comprehensively to ensure that nuclear power generating equipment is at safe and stable operation
State can maintain longer power-on time by the emergency power supply, to improve the place that nuclear power station copes with complicated Loss of power failure
The safety precaution higher grade of reason ability, nuclear power station.
As shown in figure 3, stand-by power supply branch 301 includes a breaker JS2, wherein breaker JS2 is serially connected in stand-by power supply
In branch 301, the conducting or shutdown of stand-by power supply branch 301 can control by breaker JS2, as described above, working as breaker
When JS2 is closed, stand-by power supply branch 301 is connected, standby by this at this time by the exportable backup power source of stand-by power supply branch 301
It can be used as the emergency power supply of failure nuclear power generating equipment with power supply；It therefore can real-time control by breaker JS2: the shared electricity of emergency power supply
Whether road 10 has access to backup power source, to improve the distribution that emergency power supply in the utility model embodiment shares circuit 10
Flexibility has stronger compatibility.
As an alternative embodiment, the model NSX250F of the breaker JS2.
As a kind of specific embodiment, Fig. 4 shows the shared electricity of emergency power supply provided by the embodiment of the utility model
Another circuit structure on road 10, compared to the circuit structure that emergency power supply shown by Fig. 1 shares circuit 10；Shown in Fig. 4
Emergency power supply out is shared in circuit 10, and power distribution cabinet 101 includes 401,402 ... 40M and 1 protection chambers 400 of M electric panel room,
Different electric panel rooms and protection chamber 400 distinguish electrical isolation, and then ensure the operational safety of power distribution cabinet 101；Wherein M is a electrical
Room and protection chamber 101 are electrically connected by distribution bus L, and power distribution cabinet 101 can be by distribution bus L in electric panel room
It being capable of uniform distribution between protection chamber 101.
In the structure of power distribution cabinet 101 out shown in Fig. 4, each electric panel room includes a nuclear power switch K1, every distribution
Branch meets distribution bus L by nuclear power switch K1, by the nuclear power switch K1 can control distribution branch L whether can with match the goddess of lightning
Line L connection；For example, first electric panel room 401 includes the first nuclear power switch K1- by taking first electric panel room 401 in Fig. 4 as an example
1, first distribution branch 1021 meets distribution bus L by the first nuclear power switch K1-1, when the first nuclear power switch K1-1 closure,
First distribution branch 1021 is electrically connected with distribution bus L, so that the power supply buses JH1 of nuclear power unit is by matching the goddess of lightning
Line L has access to or exports emergency power supply, to realize that the emergency power supply between different power supply buses is shared.
Protecting chamber 101 includes a nuclear power switch K2, and stand-by power supply branch 301 connects distribution bus by nuclear power switch K2
L, when nuclear power switch K2 closure, stand-by power supply branch 301 and distribution bus L are realized and are electrically connected, thus diesel-driven generator 302
It can be realized the mutual spare of power supply between each power supply buses, when Loss of power failure occurs for nuclear power station, pass through diesel generation
Output is ready for use the power supply of machine 302, to ensure the safe power supply of nuclear power generating equipment.
The circuit structure of circuit 10 is shared according to emergency power supply shown by above-mentioned Fig. 4, power distribution cabinet 101 includes M electric panel room
With 1 protection chamber 400, and protection chamber 400 and each electric panel room there are a nuclear powers to switch, each electric current branch
Road (including stand-by power supply branch 301 and M distribution branch) meets distribution bus L by nuclear power switch；Therefore, practical new at this
In type embodiment, on the one hand, comprehensively protect the electrical of power distribution cabinet 101 by independent electric panel room and independent protection chamber
Safety on the other hand can be real by each current branch conductive of each nuclear power switch controls or shutdown, power distribution cabinet 101
Emergency power supply is mutual spare between existing each power supply buses and diesel-driven generator 302, and the emergency power supply is made to share circuit 10
Electrical control is more flexible, and circuit structure is simpler easy, has ensured the power supply safety of nuclear power generating equipment.
As a preferred embodiment, protection chamber 400 also wraps in the structure of power distribution cabinet 101 out shown in Fig. 4
Include a control switch K3, wherein a termination stand-by power supply branch 301 of control switch K3, the other end ground connection of control switch K3
GND can carry out over-voltage/overcurrent protection to diesel-driven generator 302, distribution bus L and nuclear power generating equipment etc. by control switch K3,
If over-voltage/over-current phenomenon avoidance occurs in the backup power source that diesel-driven generator 302 generates, it is closed control switch K3, spare confession immediately at this time
Electric branch 301 is in short-circuit condition, then the backup power source for preventing 301 output amplitude of stand-by power supply branch excessive, and then to nuclear power
Equipment causes biggish damage；On the contrary, then control is opened when the backup power source that diesel-driven generator 302 generates is in normal condition
It closes K3 to disconnect, diesel-driven generator 302 is connect by stand-by power supply branch 301 with distribution bus L, to realize diesel-driven generator 302
Emergency power supply is shared between each power supply buses；Therefore in the utility model embodiment, by control switch K3 to distribution
Cabinet 101 and nuclear power generating equipment provide over-voltage/overcurrent protection, when the backup power source that diesel-driven generator 302 generates is in over-voltage/overcurrent shape
State, the backup power source that amplitude can be prevented excessive by control switch K3 cause biggish damage to power distribution cabinet 101 and nuclear power generating equipment,
And then the operational safety of full maintenance nuclear power generating equipment.
As a preferred embodiment, the control switch K3 is double-point double-throw switch.
Fig. 5 shows the modular structure of nuclear power station distribution board 50 provided by the embodiment of the utility model, as shown in Fig. 5, core
Power station distribution board 50 includes that emergency power supply as described above shares circuit 10；The embodiment of-Fig. 4 referring to Fig.1, due to answering urgent telegram
Circuit 10 is shared in source to provide emergency power supply to nuclear power generating equipment using equipment existing in nuclear power station, answered by powerful
Urgent telegram source maintains the prolonged stable operation of nuclear power generating equipment, reduces the operation cost of nuclear power station；Therefore, in the utility model
In nuclear power station distribution board 50 provided by embodiment, the mutual standby of power supply can be realized between the different power supply buses of nuclear power unit
With flexibility is higher, when accident event occurs in nuclear power station, can be transported to failure by the power supply buses operated normally in nuclear power station
Capable power supply buses provide stable high-power emergency power supply, which can maintain without external dc power
The longer power-on time of nuclear power generating equipment, operation cost is lower, can be universally applied to various types of nuclear power station electric system
In；It is shared to effectively overcome the power supply that nuclear power station distribution board in traditional technology cannot achieve between nuclear power unit, works as nuclear power station
The problem of occurring being easy to cause nuclear power generating equipment to be in power loss shutdown status when Loss of power failure, and then jeopardizing nuclear power station operational safety.
The modular structure that Fig. 6 shows emergency power supply system 60 provided by the embodiment of the utility model is answered as shown in Fig. 6
Anxious power supply system 60 includes nuclear power station distribution board 50 as described above；Referring to the embodiment of nuclear power station distribution board 50 in above-mentioned Fig. 5,
Since nuclear power station distribution board 50 can be realized in nuclear power station the mutual spare of power supply between different power supply buses, when nuclear power station occurs
When power supply trouble, the nuclear power in the power supply buses of nuclear power unit can provide emergency power supply, can be made by the emergency power supply
Nuclear power generating equipment is able to maintain that prolonged power-on time；Therefore in the utility model embodiment, emergency power supply system 60 can
Complicated nuclear power station Loss of power failure is handled in time, it is therefore prevented that: cause nuclear power generating equipment to be in power loss shutdown due to Loss of power failure
State, the nuclear plant safety accident thus caused；And the emergency power supply system 60 has sufficiently excavated existing in nuclear power station set
It is standby that emergency power supply is provided, the flexibility of nuclear power station distribution is greatly improved, operation cost is lower, reduces nuclear plant safety
Accident rate；Operational safety and people of the emergency power supply system 60 for maintenance nuclear power energy in the utility model embodiment
Daily life Electrical Safety have particularly important meaning.
It should be noted that, in this document, such as a plurality of and a variety of etc word refers to the quantity greater than 1, such as
One and second etc relational terms are used merely to distinguish an entity with another entity, and not necessarily require or
Imply that there are any actual relationship or orders between these entities.And the terms "include", "comprise" or any
Other variants are intended to non-exclusive inclusion so that include product or the structure of a series of elements intrinsic want
Element.In the absence of more restrictions, the element limited by sentence " including ... " or " including ... ", it is not excluded that
There is also other elements in process, method, article or terminal device including the element.In addition, herein, it is " big
In ", " being less than ", " being more than " etc. be interpreted as not including this number；" more than ", " following ", " within " etc. be interpreted as including this number.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of emergency power supply shares circuit characterized by comprising power distribution cabinet, N number of nuclear power unit and M distribution branch；
The power distribution cabinet includes a distribution bus, a termination distribution bus of every distribution branch, every distribution branch
The power supply buses of each nuclear power unit of another termination on road；
Wherein, every distribution branch includes: the switch control unit for controlling the distribution branch conducting or shutdown；
The switch control unit includes a contactor and a breaker, and the contactor is serially connected in the distribution branch, described disconnected
The one termination distribution branch of road device, the other end ground connection of the breaker；
The N is the positive integer more than or equal to 1, and the M is the positive integer more than or equal to 1.
2. emergency power supply according to claim 1 shares circuit, which is characterized in that the model of the contactor are as follows: FG2-
1250A, the model of the breaker are as follows: NSX160F-3P3D.
3. emergency power supply according to claim 1 shares circuit, which is characterized in that N=2, M=4,2 nuclear power units point
Not Wei No.1 nuclear power unit and No. two nuclear power units, each described nuclear power unit includes that A column power supply buses and B are arranged for the goddess of lightning
Line, 4 articles of distribution branches include: the first distribution branch, the second distribution branch, third distribution branch and the 4th distribution branch；
The one termination distribution bus of the first distribution branch, the A of another termination No. two nuclear power units are arranged for the goddess of lightning
Line；
The one termination distribution bus of the second distribution branch, the A of another termination No.1 nuclear power unit are arranged for the goddess of lightning
Line；
The one termination distribution bus of the third distribution branch, the B of another termination No.1 nuclear power unit are arranged for the goddess of lightning
Line；
The one termination distribution bus of the 4th distribution branch, the B of another termination No. two nuclear power units are arranged for the goddess of lightning
Line.
4. emergency power supply according to claim 1 shares circuit, which is characterized in that further include:
The one termination distribution bus, another termination diesel-driven generator, the stand-by power supply branch for output is ready for use power supply.
5. emergency power supply according to claim 4 shares circuit, which is characterized in that the stand-by power supply branch includes one disconnected
Road device JS2；
Wherein, the breaker JS2 is serially connected in the stand-by power supply branch.
6. emergency power supply according to claim 5 shares circuit, which is characterized in that the model of the breaker JS2
NSX250F。
7. emergency power supply according to claim 5 shares circuit, which is characterized in that the power distribution cabinet includes M electric panel room
With 1 protection chamber, wherein the M electric panel room and the protection chamber are electrically connected by the distribution bus；
Wherein, each described electric panel room includes a nuclear power switch K1, and every distribution branch passes through the nuclear power switch K1
Connect the distribution bus；
The protection chamber includes a nuclear power switch K2, and the stand-by power supply branch connects the distribution by the nuclear power switch K2
Bus.
8. emergency power supply according to claim 7 shares circuit, which is characterized in that the protection chamber further include: a control
System switch；
Wherein, a termination stand-by power supply branch of the control switch, the other end ground connection of the control switch.
9. a kind of nuclear power station distribution board, which is characterized in that including the shared electricity of such as described in any item emergency power supplies of claim 1-8
Road.
10. a kind of emergency power supply system, which is characterized in that including nuclear power station distribution board as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821236000.1U CN208753742U (en) | 2018-08-01 | 2018-08-01 | Emergency power supply shares circuit, nuclear power station distribution board and emergency power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821236000.1U CN208753742U (en) | 2018-08-01 | 2018-08-01 | Emergency power supply shares circuit, nuclear power station distribution board and emergency power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN208753742U true CN208753742U (en) | 2019-04-16 |
Family
ID=66058983
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933321A (en) * | 2020-07-17 | 2020-11-13 | 中核核电运行管理有限公司 | Heavy water reactor radioactive waste liquid discharge loop system and method |
| CN114498309A (en) * | 2020-10-24 | 2022-05-13 | 天津首瑞智能电气有限公司 | Electric switch and power distribution monitoring unit |
-
2018
- 2018-08-01 CN CN201821236000.1U patent/CN208753742U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933321A (en) * | 2020-07-17 | 2020-11-13 | 中核核电运行管理有限公司 | Heavy water reactor radioactive waste liquid discharge loop system and method |
| CN111933321B (en) * | 2020-07-17 | 2024-06-07 | 中核核电运行管理有限公司 | Heavy water pile radioactive waste liquid discharge loop system and method |
| CN114498309A (en) * | 2020-10-24 | 2022-05-13 | 天津首瑞智能电气有限公司 | Electric switch and power distribution monitoring unit |
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