CN102208828B - Emergency power source current conversion device for nuclear power station and control method - Google Patents
Emergency power source current conversion device for nuclear power station and control method Download PDFInfo
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- CN102208828B CN102208828B CN 201110131089 CN201110131089A CN102208828B CN 102208828 B CN102208828 B CN 102208828B CN 201110131089 CN201110131089 CN 201110131089 CN 201110131089 A CN201110131089 A CN 201110131089A CN 102208828 B CN102208828 B CN 102208828B
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Abstract
The invention provides an emergency power source current conversion device for a nuclear power station and a control method, applicable to the technical field of nuclear power station current conversion. The emergency power source current conversion device for the nuclear power station comprises multiple current conversion units, a sampling unit, a plurality of built-in controllers and a central controller. The built-in controllers make the multiple current conversion units synchronously work in current equalization and voltage stabilization under the control of the central controller. When one current conversion unit stops working due to faults, other current conversion units can still normally work independently, so that the reliability of the emergency power source current conversion device for the nuclear power station is improved. The emergency power source current conversion device for the nuclear power station is designed in a modular manner and is convenient to expand, the capacity of the emergency power source current conversion device for the nuclear power station is enhanced, and meanwhile, online replacement and maintenance can be realized. In addition, in the invention, an anti-seismic structure is adopted for the emergency power source current conversion device for the nuclear power station. The anti-seismic structure has excellent anti-seismic performance and can ensure that the emergency power source current conversion device works normally during earthquakes.
Description
Technical field
The invention belongs to million kilowatt advanced pressurized water reactor nuclear power plant key technology, novel high-capacity, high-power battery and Related product and nuclear power plant equipment fixed structure technical field, relate in particular to critical component and a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of new and effective energy transformation technology.
Background technology
The invention belongs to million kilowatt advanced pressurized water reactor nuclear power plant key technology, novel high-capacity, high-power battery and Related product and nuclear power plant equipment fixed structure technical field, relate in particular to automation equipment and a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of battery management system, each link of confession electricity consumption.
Nuclear power station (nuclear power plant) is to utilize nuclear fission (Nuclear Fission) or nuclear fusion (Nuclear Fusion) to react the power plant that the energy that discharges produces electric energy.In order to protect the health of nuclear power station staff and nuclear power station surrounding resident, the principle of depth defense is all adopted in the design of nuclear power station, construction and operation, provide multiple protective from equipment, measure, to guarantee nuclear power station the power output of reactor is effectively controlled, and can various natural calamities appear, as earthquake, tsunami, flood etc., or the artificial fire that produces, blast etc., also can guarantee reactor fuel assemblies is cooled off fully; And then guarantee that the discharging to environment does not take place penetrating property material.The depth defense principle generally comprises five layers of defence line, the ground floor defence line: well-designed, make, construction, guarantee that nuclear power station has superior hardware environment, sets up perfect program and strict system, to the systematic education and training of nuclear power station staff, set up complete nuclear Safety Culture; Second layer defence line: strengthen operational management and supervision, in time the correct abnormal conditions of handling are fixed a breakdown; The 3rd layer of defence line: under the severely subnormal situation, the control of reactor and protection system can in time and effectively be moved, to prevent equipment fault and human error and then to develop into accident; The 4th layer of defence line: under accident conditions, in time enable the nuclear plant safety protection system, comprise various engineered safeguards features, in order to the power management in the reinforcement accident, the accident that prevents enlarges, with the integrality of protection nuclear power station 3 road barriers; The layer 5 defence line: just in case the extremely impossible accident that takes place takes place, and leak with radioactivity, should in time enable inside and outside all emergency systems of factory, make great efforts to alleviate accident to the influence of surrounding resident and environment.
Safety system all adopts autonomous device and redundant arrangement, makes that safety system can be antiseismic and move in other adverse circumstances.
No matter power supply arranges or moves as the power source of nuclear power station operation, all should embody the theory of depth defense.For realizing the high reliability of nuclear power station power-supply system, all should have emergency power supply to the power consumption equipment of some particular importance or the equipment of specific (special) requirements, carry out multiplicity, the setting of independence ground simultaneously, cause the unavailable of emergency power supply to avoid that common mode failure takes place.
The emergency power system of nuclear power station and normal power source system constitute station service electrical system together jointly, for power consumption equipments all in the factory provides safe and reliable power supply.Emergency power supply must guarantee during normal operating condition, accident conditions or behind the accident conditions the emergent safety means for nuclear power station power supply is provided, to carry out safety function.Because the particularity of nuclear power station nuclear safety is so the designing requirement of its power-supply system should be much higher than other industry.
Nuclear power station is provided with the multiple tracks redundant power, comprise dedicated emergency power supplys such as main power source outside the factory, off-site auxiliary power source and emergent stationary diesel engine, Each performs its own functions for each power supply, cooperation is arranged again simultaneously mutually, not only various informative, and arrange layer by layer, multiple redundancy provides reliable power supply for electric nuclear power station to greatest extent.
At present, the station service electrical system operational mode of nuclear power station is as follows:
1) under normal running (operation) conditions, the distribution system of whole station-service equipment is powered through HV Auxiliary Transformer by the 26KV bus of unit;
2) when unit operation, the 26KV bus is powered by main generator;
3) during generator outage, then sent to the 26KV bus through main transformer by the 400/500KV electrical network;
4) if the 26KV bus loses power supply or loses HV Auxiliary Transformer, namely lose main power source outside the factory, then the 220KV electrical network to the safe auxiliary equipment power supply power supply that must move, makes reactor maintain hot shutdown condition through auxiliary transformer;
5) if main power source and off-site auxiliary power source all lose power supply outside the factory, then to emergent station-service power devices, make reactor enter the cold shut state by emergency diesel dynamo group (two emergency diesel dynamos of a machine assembly);
6) when any emergency diesel dynamo group of nuclear power generating sets is unavailable, then replaced by the 5th diesel engine, carry out the function of emergency diesel dynamo group, to emergent station-service power devices.
Yet fixed emergency diesel-oil unit has certain limitation.This be because, drive generator operation at stationary diesel engine, when the energy of diesel oil is converted into electric energy, must be by the pure air in the stationary diesel engine cylinder, after will filtering with after high-pressure atomization diesel oil that oil atomizer ejects fully mixes, promote descent of piston, each cylinder is work done successively in certain sequence, thereby drives crankshaft rotating.Rotation by stationary diesel engine drives the rotor of generator again, utilizes " electromagnetic induction " principle, and generator will be exported induced electromotive force, just can produce electric current through the load circuit of closure, thus the realization electricity generate function.In the above-mentioned power generation process, must could realize by air and fully mixing of high-pressure atomization diesel oil.When in situation such as flood, tsunami, mud-rock flow following time, the electrical system of stationary diesel engine might lose efficacy because of water logging, oil supply pipe, compressed air piping might rupture because of external impact force, the diesel engine body might be because impulsive force and structure deforms, these all can cause the stationary diesel generating set to start, and then emergency power supply can't be provided.
Therefore, under the situation that other power supplys lose, fixed emergency diesel-oil unit as the final emergency power supply of nuclear power station, because himself characteristic has determined it can not resist the water logging disaster---as flood, tsunami, typhoon tide etc., when the extreme natural calamity of super design reference occurring, fixed emergency diesel-oil unit is easy to lose power supply, can't provide the power demand that the reactor core waste heat is discharged and cool off in the spent fuel pond for nuclear power station, and this will cause nuclear power station to produce catastrophic consequence.
At present, modularization rectification/charging module is used widely, and a small amount of UPS module parallel connection also has model machine to occur.But, the structure of existing conventional power supply current converter is whole unit pattern, if certain part of nuclear power station emergency power supply current converter inside breaks down, to cause whole nuclear power station emergency power supply current converter to power, lose the unique effect of emergent or stand-by power supply, so also can reduce the reliability of nuclear power station emergency power supply current converter greatly.
The structure of existing conventional power supply current converter is whole unit pattern, so its capacity is limited, can't be used in the jumbo emergency power supply unit.
In the fixed structure of present current converter, though the device of various forms of conventional structures is arranged, but device poor seismic behavior of the prior art, can't bear the earthquake of high earthquake intensity, the rack that installs in earthquake is easy to distortion, to cause current converter normally not work, influence nuclear power station relevant device reliability of operation, be unfavorable for the safe operation of nuclear power station.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of nuclear power station emergency power supply current converter, be intended to solve existing nuclear power station emergency power supply current converter when its certain part breaks down, cause that whole nuclear power station emergency power supply current converter can't be powered, capacity is limited and the problem of shock resistance difference.
The embodiment of the invention is achieved in that a kind of nuclear power station emergency power supply current converter, and described nuclear power station emergency power supply current converter comprises:
The multichannel convertor unit, the interchange side joint bus rod of described each road convertor unit, the direct current side joint dc bus of described each road convertor unit;
Output with each road convertor unit is connected respectively, gathers the sampling unit of the output signal of telecommunication of each road convertor unit;
A plurality of built-in controllers that are connected with the described convertor unit of multichannel respectively, the IGBT switch conduction and the turn-off time that are used for the described multichannel convertor unit of control are synchronous fully; And
The central controller that is connected with a plurality of built-in controllers with described sampling unit respectively is used for the signal of telecommunication gathered according to described sampling unit, controls described a plurality of built-in controller.
In the said structure, described multichannel convertor unit is multichannel modularization bi-directional inverter, the interchange side joint bus rod of described each channel modularized bi-directional inverter, the direct current side joint dc bus of described each channel modularized bi-directional inverter.
In the said structure, described sampling unit is:
The interchange side sampling unit that is connected with the interchange side of each channel modularized bi-directional inverter respectively;
The DC side sampling unit that is connected with the DC side of each channel modularized bi-directional inverter respectively.
Described built-in controller comprises:
The interchange side sampling module that is connected with the interchange side of a described channel modularized bi-directional inverter;
The DC side sampling module that is connected with the DC side of a described channel modularized bi-directional inverter;
The control module that is connected with described interchange side sampling module, DC side sampling module, central controller and a channel modularized bi-directional inverter respectively, the value of electrical signals that is used for controlling according to the control signal of the signal of telecommunication of described interchange side sampling module and the collection of DC side sampling module and central controller described one channel modularized bi-directional inverter output is identical with default value of electrical signals.
In the said structure, also be connected with an ac filter unit between the interchange side of described each channel modularized bi-directional inverter and the bus rod;
Also be connected with a direct current filter unit between the DC side of described each channel modularized bi-directional inverter and the dc bus.
In the said structure, described central controller is connected with described a plurality of built-in controllers respectively by the CAN-BUS bus of two-wire serial communication respectively.
The signal of telecommunication of described interchange side sampling unit collection comprises alternating voltage, alternating current and phase angle;
The signal of telecommunication of described DC side sampling unit collection comprises direct voltage and direct current.
In the said structure, described multichannel convertor unit is multichannel modularization rectifier, the interchange side joint bus rod of described each channel modularized rectifier, the direct current side joint dc bus of described each channel modularized rectifier.
In the said structure, described sampling unit is:
The DC side sampling unit that is connected with the DC side of each channel modularized rectifier respectively.
In the said structure, described built-in controller comprises:
The DC side sampling module that is connected with the DC side of a described channel modularized rectifier;
The control module that is connected with described DC side sampling module, central controller and a channel modularized rectifier respectively, be used for according to the signal of telecommunication of described DC side sampling module collection and the control signal of central controller, make the value of electrical signals of described one channel modularized rectifier output identical with default value of electrical signals.
In the said structure, also be connected with an ac filter unit between the interchange side of described each channel modularized rectifier and the bus rod;
Also be connected with a direct current filter unit between the DC side of described each channel modularized rectifier and the dc bus.
In the said structure, described central controller is connected with described a plurality of built-in controllers respectively by the CAN-BUS bus of two-wire serial communication respectively.
The signal of telecommunication of described DC side sampling unit collection comprises direct voltage and direct current.
In the said structure, described multichannel convertor unit is multichannel modularization inversion device, the interchange side joint bus rod of described each channel modularized inverter, the direct current side joint dc bus of described each channel modularized inverter.
In the said structure, described sampling unit is:
The interchange side sampling unit that is connected with the interchange side of each channel modularized inverter respectively.
In the said structure, described built-in controller comprises:
The interchange side sampling module that is connected with the interchange side of a described channel modularized inverter;
The control module that is connected with described interchange side sampling module, central controller and a channel modularized inverter respectively, be used for according to the signal of telecommunication of described interchange side sampling module collection and the control signal of central controller, make the value of electrical signals of described one channel modularized inverter output identical with default value of electrical signals.
In the said structure, also be connected with an ac filter unit between the interchange side of described each channel modularized inverter and the bus rod;
Also be connected with a direct current filter unit between the DC side of described each channel modularized inverter and the dc bus.
In the said structure, described central controller is connected with described a plurality of built-in controllers respectively by the CAN-BUS bus of two-wire serial communication respectively.
In the said structure, the signal of telecommunication of described interchange side sampling unit collection comprises alternating voltage, alternating current and phase angle.
Another purpose of the embodiment of the invention is to provide a kind of synchronous working control method of aforesaid nuclear power station emergency power supply current converter, and described control method comprises the steps:
Described a plurality of built-in controller is gathered the value of electrical signals of multichannel convertor unit output respectively;
Described central controller calculates signal of telecommunication mean value according to described value of electrical signals;
Described sampling unit is gathered the real-time and column electrical signal mean value of the signal of telecommunication numerical value of multichannel convertor unit output;
Described central controller calculates signal of telecommunication mean difference according to described signal of telecommunication mean value and real-time and column electrical signal mean value, and described signal of telecommunication mean difference is decomposed the value of being compensated;
Described a plurality of built-in controller value of being compensated, and the signal of telecommunication of the control convertor unit corresponding with described built-in controller output make the signal of telecommunication of described multichannel convertor unit output synchronous.
In embodiments of the present invention, nuclear power station emergency power supply current converter comprises the multichannel convertor unit, sampling unit, a plurality of built-in controllers and central controller, a plurality of built-in controllers make the current-sharing of multichannel convertor unit under the control of central controller, the voltage stabilizing synchronous working, when hindering for some reason, one road convertor unit quits work, other road convertor unit still can independent operate as normal, therefore improved the reliability of nuclear power station emergency power supply current converter, and increased the capacity of nuclear power station emergency power supply current converter, in addition, nuclear power station emergency power supply current converter adopts modularized design, can be implemented in line and changes and maintenance.
The invention provides the anti-seismic structure for nuclear power station emergency power supply system current converter, its anti-seismic performance is good, can bear the earthquake of high earthquake intensity, rack can not be out of shape, assurance nuclear power station emergency power supply current converter also can normally be worked in earthquake, is beneficial to the safe operation that guarantees nuclear power station.
Technical scheme of the present invention is: a kind of anti-seismic structure for nuclear power station emergency power supply system current converter, comprise the rack cabinet, and described rack cabinet comprises four channel-section steels that are arranged at vertical direction, in the side of rack cabinet welding reinforced steel beam and girder; Offer the installation through hole of dense arrangement on the described channel-section steel, the described surperficial sidewall with the rack cabinet of the channel-section steel that through hole is installed that offers apart arranges;
Offer the installation groove that wears for for cable on the described rack cabinet, described installation groove place is provided with netted coil holder, and cable is arranged in the mesh of coil holder and fastens on coil holder by binding strap; Fill out and be provided with fire-proof sealing material at described installation groove place;
The bottom of described rack cabinet is provided with installation portion, and the rack cabinet is fixed on the installed surface, is embedded with built-in fitting in the installed surface, and described built-in fitting is provided with screw hole, and described installation portion lock onto in the screw hole of built-in fitting by securing member; Described securing member is bolt, is arranged with elastomeric pad on the described bolt.
Particularly, described rack cabinet is provided with installation component, and the sidewall of described installation component convexes with lug, offers the installation perforation corresponding with described installation through hole on the described lug, and pcb board is fixedly arranged on the described installation component;
Described rack cabinet is provided with for the interval base plate that the rack cabinet is divided into two layers at least;
The drift angle place, bottom of described interval base plate is set with fixed head, offers the fixed via that is complementary with described installation through hole on the described fixed head, and described interval base plate is fixedly connected on the described channel-section steel by locking member;
Described rack cabinet is provided with crossbeam, offers the installation aperture of a plurality of dense arrangement on the crossbeam, and crossbeam is fixed on the installation through hole of channel-section steel.
Particularly, four jiaos of described pcb board and center all offer fixedly perforation, and described pcb board is locked by connector, is arranged with the insulation cushion of the damping of can insulating on the described connector.
Perhaps, described rack cabinet is provided with slot, and described slot is oppositely arranged, and described pcb board is inserted in two slots that arrange relatively, is provided with cushioning members in the described slot; Offer locking hole on the described slot, described pcb board be provided with can lock with described locking hole on fixing hole.
A kind of anti-seismic structure for nuclear power station emergency power supply system current converter provided by the invention, it is by arranging channel-section steel and reinforced steel beam and girder, increased the structural strength of rack cabinet greatly, improved anti-seismic performance, to bear the earthquake of high earthquake intensity, the rack cabinet can not be out of shape, and the equipment such as power supply, instrument control device that guarantee also can normally be worked in earthquake, are beneficial to the safe operation that guarantees nuclear power station; By offer the installation through hole of dense arrangement at channel-section steel, it can easily adjust the installation site of related components according to actual conditions, and the product versatility is good, and application cost is low.
Description of drawings
Fig. 1 is the structure chart of the nuclear power station emergency power supply current converter that provides of first embodiment of the invention;
Fig. 2 is the structure chart of the built-in controller of the nuclear power station emergency power supply current converter that provides of first embodiment of the invention;
Fig. 3 is the structure chart of the nuclear power station emergency power supply current converter that provides of second embodiment of the invention;
Fig. 4 is the structure chart of the built-in controller of the nuclear power station emergency power supply current converter that provides of second embodiment of the invention;
Fig. 5 is the structure chart of the nuclear power station emergency power supply current converter that provides of third embodiment of the invention;
Fig. 6 is the structure chart of the built-in controller of the nuclear power station emergency power supply current converter that provides of third embodiment of the invention;
Fig. 7 is the flow chart of the synchronous working control method of the nuclear power station emergency power supply current converter that provides of the embodiment of the invention;
Fig. 8 is the modular structure figure of the nuclear power station emergency power supply current converter that provides of the embodiment of the invention;
Fig. 9 is the structural representation of the cabinet of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 10 is the schematic perspective view of the channel-section steel of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 11 is the schematic perspective view of the pcb board of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 12 is the installation component schematic perspective view of base plate at interval of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 13 is the schematic perspective view of the installation component of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 14 is the schematic perspective view of the insulation cushion of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 15 is the 3 D plane schematic diagram of another installation component of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 16 is the schematic perspective view of another installation component of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 17 is the partial schematic diagram of the rack of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 18 is the structural representation of the coil holder of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 19 is the floor map of the slot of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 20 is another floor map of the slot of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 21 is the floor map of the slot of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention;
Figure 22 is the floor map of the built-in fitting of a kind of anti-seismic structure for nuclear power station emergency power supply system current converter of providing of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Nuclear power station emergency power supply current converter comprises:
The multichannel convertor unit, the interchange side joint bus rod of described each road convertor unit, the direct current side joint dc bus of described each road convertor unit;
Output with each road convertor unit is connected respectively, gathers the sampling unit of the output signal of telecommunication of each road convertor unit;
A plurality of built-in controllers that are connected with the described convertor unit of multichannel respectively, the IGBT switch conduction and the turn-off time that are used for the described multichannel convertor unit of control are synchronous fully, make the current-sharing of described multichannel convertor unit, voltage stabilizing synchronous working; And
The central controller that is connected with a plurality of built-in controllers with described sampling unit respectively is used for the signal of telecommunication gathered according to described sampling unit, and the work of described a plurality of built-in controllers is controlled.
Fig. 1 shows the structure of the nuclear power station emergency power supply current converter that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
As one embodiment of the invention, the multichannel convertor unit is multichannel modularization bi-directional inverter 100, the interchange side joint bus rod of described each channel modularized bi-directional inverter 100, the direct current side joint dc bus of described each channel modularized bi-directional inverter 100.
As one embodiment of the invention, sampling unit is:
The interchange side sampling unit 200 that is connected with the interchange side of each channel modularized bi-directional inverter 100 respectively;
The DC side sampling unit 300 that is connected with the DC side of each channel modularized bi-directional inverter 100 respectively.
Nuclear power station emergency power supply current converter also comprises:
A plurality of built-in controllers 400 that are connected with multichannel modularization bi-directional inverter 100 respectively, the IGBT switch conduction and the turn-off time that are used for controlling respectively multichannel modularization bi-directional inverter 100 are synchronous fully, make 100 current-sharings of multichannel modularization bi-directional inverter, voltage stabilizing synchronous working; And
Respectively with exchange the central controller 500 that side sampling unit 200, DC side sampling unit 300 are connected with a plurality of built-in controllers 400, be used for according to exchanging the signal of telecommunication that side sampling unit 200 and DC side sampling unit 300 are gathered the work of a plurality of built-in controllers 400 being controlled.
Fig. 2 shows the structure of the built-in controller of the nuclear power station emergency power supply current converter that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
As one embodiment of the invention, built-in controller 400 comprises:
The interchange side sampling module 4001 that is connected with the interchange side of a channel modularized bi-directional inverter 100.
As one embodiment of the invention, built-in controller 400 also comprises:
The DC side sampling module 4002 that is connected with the DC side of described one channel modularized bi-directional inverter 100.
As one embodiment of the invention, built-in controller 400 also comprises:
Respectively with exchange the control module 4003 that side sampling module 4001, DC side sampling module 4002, central controller 500 are connected with a channel modularized bi-directional inverter 100, be used for making the value of electrical signals of channel modularized bi-directional inverter 100 outputs identical with default value of electrical signals according to exchanging side sampling module 4001 and the signal of telecommunication of DC side sampling module 4002 collections and the control signal of central controller 500.
As one embodiment of the invention, also be connected with an ac filter unit 600 between the interchange side of each channel modularized bi-directional inverter 100 and the bus rod.
As one embodiment of the invention, also be connected with a direct current filter unit 700 between the DC side of each channel modularized bi-directional inverter 100 and the dc bus.
As one embodiment of the invention, central controller 500 is connected with a plurality of built-in controllers 400 respectively by the CAN-BUS bus of two-wire serial communication respectively.
As one embodiment of the invention, central controller 500 adopts DSP.
As one embodiment of the invention, central controller 500 adopts advanced controller able to programme.
As one embodiment of the invention, the signal of telecommunication that exchanges 200 collections of side sampling unit comprises alternating voltage, alternating current or phase angle.
As one embodiment of the invention, the signal of telecommunication that DC side sampling unit 300 is gathered comprises direct voltage or direct current.
Fig. 3 shows the structure of the nuclear power station emergency power supply current converter that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
As one embodiment of the invention, the multichannel convertor unit is multichannel modularization rectifier 101, the interchange side joint bus rod of described each channel modularized rectifier 101, the direct current side joint dc bus of described each channel modularized rectifier 101.
As one embodiment of the invention, sampling unit is:
The DC side sampling unit 301 that is connected with the DC side of each channel modularized rectifier 101 respectively.
Nuclear power station emergency power supply current converter also comprises:
A plurality of built-in controllers 401 that are connected with the described modularization rectifier 101 of multichannel respectively, the IGBT switch conduction and the turn-off time that are used for control multichannel modularization rectifier 101 are synchronous fully, make 101 current-sharings of described multichannel modularization rectifier, voltage stabilizing synchronous working; And
The central controller 501 that is connected with a plurality of built-in controllers 401 with described DC side sampling unit 301 respectively is used for the signal of telecommunication gathered according to described DC side sampling unit 301, and the work of described a plurality of built-in controllers 401 is controlled.
Fig. 4 shows the structure of the built-in controller of the nuclear power station emergency power supply current converter that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
As one embodiment of the invention, described built-in controller 401 comprises:
The DC side sampling module 4012 that is connected with the DC side of described one channel modularized rectifier 101.
As one embodiment of the invention, described built-in controller 401 also comprises:
The control module 4013 that is connected with described DC side sampling module 4012, central controller 501 and a channel modularized rectifier 101 respectively, be used for according to the signal of telecommunication of described DC side sampling module 4012 collections and the control signal of central controller 501, make the value of electrical signals of described one channel modularized rectifier 101 outputs identical with default value of electrical signals.
As one embodiment of the invention, also be connected with an ac filter unit 601 between the interchange side of described each channel modularized rectifier 101 and the bus rod.
As one embodiment of the invention, also be connected with a direct current filter unit 701 between the DC side of described each channel modularized rectifier 101 and the dc bus.
As one embodiment of the invention, described central controller 501 is connected with described a plurality of built-in controllers 401 respectively by the CAN-BUS bus of two-wire serial communication respectively.
As one embodiment of the invention, described central controller 501 adopts DSP.
As one embodiment of the invention, described central controller 501 adopts advanced controller able to programme.
As one embodiment of the invention, the signal of telecommunication that described DC side sampling unit 301 is gathered comprises direct voltage or direct current.
Fig. 5 shows the structure of the nuclear power station emergency power supply current converter that third embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
The multichannel convertor unit is multichannel modularization inversion device 102, the interchange side joint bus rod of described each channel modularized inverter 102, the direct current side joint dc bus of described each channel modularized inverter 102.
As one embodiment of the invention, described sampling unit is:
The interchange side sampling unit 202 that is connected with the interchange side of each channel modularized inverter 102 respectively.
Nuclear power station emergency power supply current converter also comprises:
A plurality of built-in controllers 402 that are connected with the described modularization inversion of multichannel device 102 respectively, the IGBT switch conduction and the turn-off time that are used for the described multichannel modularization inversion device 102 of control are synchronous fully, make 102 current-sharings of described multichannel modularization inversion device, voltage stabilizing synchronous working; And
The central controller 502 that is connected with a plurality of built-in controllers 402 with described interchange side sampling unit 202 respectively is used for the signal of telecommunication gathered according to described interchange side sampling unit 202, and the work of described a plurality of built-in controllers 402 is controlled.
Fig. 6 shows the structure of the built-in controller of the nuclear power station emergency power supply current converter that third embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
As one embodiment of the invention, described built-in controller 402 comprises:
The interchange side sampling module 4021 that is connected with the interchange side of described one channel modularized inverter 102.
As one embodiment of the invention, described built-in controller 402 also comprises:
The control module 4023 that is connected with described interchange side sampling module 4021, central controller 502 and a channel modularized inverter 102 respectively, be used for according to the signal of telecommunication of described interchange side sampling module 4021 collections and the control signal of central controller 502, make the value of electrical signals of described one channel modularized inverter 102 outputs identical with default value of electrical signals.
As one embodiment of the invention, also be connected with an ac filter unit 602 between the interchange side of described each channel modularized inverter 102 and the bus rod.
As one embodiment of the invention, also be connected with a direct current filter unit 702 between the DC side of described each channel modularized inverter 102 and the dc bus.
As one embodiment of the invention, described central controller 502 is connected with described a plurality of built-in controllers 402 respectively by the CAN-BUS bus of two-wire serial communication respectively.
As one embodiment of the invention, described central controller 502 adopts DSP.
As one embodiment of the invention, described central controller 502 adopts advanced controller able to programme.
As one embodiment of the invention, the signal of telecommunication that described interchange side sampling unit 202 is gathered comprises alternating voltage, alternating current or phase angle.
Fig. 7 shows the flow chart of the synchronous working control method of the nuclear power station emergency power supply current converter that the embodiment of the invention provides.
The synchronous working control method flow process of nuclear power station emergency power supply current converter is as follows:
Step S101, a plurality of built-in controllers gather the value of electrical signals of multichannel convertor unit output respectively;
Step S102, central controller calculate signal of telecommunication mean value according to described value of electrical signals;
Step S103, sampling unit gather the real-time and column electrical signal mean value of the signal of telecommunication numerical value of multichannel convertor unit output;
Step S104, central controller calculates signal of telecommunication mean difference according to described signal of telecommunication mean value and real-time and column electrical signal mean value, and described signal of telecommunication mean difference is decomposed the value of being compensated;
Step S105, a plurality of built-in controller values of being compensated, and the signal of telecommunication of the control convertor unit corresponding with described built-in controller output make the signal of telecommunication of described multichannel convertor unit output synchronous.
Fig. 8 shows the modular structure of the nuclear power station emergency power supply current converter that the embodiment of the invention provides.
The mode of operation of nuclear power station emergency power supply current converter is divided into two kinds: a kind of is that alternating current is become direct current; Another kind is that direct current is become alternating current.
The selection of mode of operation is controlled by the mode of operation selector, and the mode of operation selector can be by automatic detection, acceptance from the remote motion signal of the online monitoring system of the energy-storage system of nuclear power station emergency power supply and the mode of operation that manual ringing decides two-way current converter.
The operational mode of nuclear power station emergency power supply current converter has following several:
A) average charge: descend or after discharge test finishes at accumulator electric-quantity, need be to the battery deep charge, all fill being set to, guarantee battery stores electric weight as much as possible;
B) forced charge: when nuclear power station may face the dead electricity risk, can carry out forced charge to storage battery, guarantee that array stores more electric weight, with the demand after the dead electricity of reply power station;
C) forced electric discharge: when normally moving, forced electric discharge can be realized the discharge test of a module, and its electric energy transfer is gone into other modules; Of paramount importance is can allow it export electric weight as much as possible under emergency situation in the power station, till battery modules is damaged.
In embodiments of the present invention, nuclear power station emergency power supply current converter comprises multichannel convertor unit, sampling unit, a plurality of built-in controller and central controller, a plurality of built-in controllers make the current-sharing of multichannel convertor unit, voltage stabilizing synchronous working under the control of central controller, when hindering for some reason, one road convertor unit quits work, other road convertor unit still can independent operate as normal, has therefore improved the reliability of nuclear power station emergency power supply current converter.Nuclear power station emergency power supply current converter adopts modularized design, is convenient to expansion, has increased the capacity of nuclear power station emergency power supply current converter, can be implemented in line simultaneously and changes and maintenance.In addition, the present invention adopts a kind of anti-seismic structure for nuclear power station emergency power supply system current converter, and its anti-seismic performance is good, and assurance emergency power supply current converter also can normally be worked in earthquake.
As Fig. 9 and～shown in Figure 22, a kind of anti-seismic structure for nuclear power station emergency power supply system current converter that the embodiment of the invention provides, comprise rack cabinet 5100, described rack cabinet 5100 comprises four channel-section steels 5110 that are arranged at vertical direction, in the side of rack cabinet 5100 welding reinforced steel beam and girder 5120; Arranged in a crossed manner and the centering setting in reinforced steel beam and girder 5120 diagonal angles, be connected on the adjacent channel-section steel 5110, strengthened the structural stability of rack body greatly, even under the abominable situations such as earthquake of high earthquake intensity, rack cabinet 5100 still can guarantee reliability of structure, rack cabinet 5100 can not be out of shape, thereby the electronic device that guarantees rack cabinet 5100 inside can keep the reliability of work.Offer the installation through hole 5111 of dense arrangement on the described channel-section steel 5110, through hole 5111 is installed by certain spacing distance setting, the installation through hole 5111 of its horizontal direction is in the same plane.The described channel-section steel 5110 surperficial sidewalls with rack cabinet 5100 that through hole 5111 is installed that offer apart arrange, and to stay enough heat-dissipating spaces, are beneficial to the heat radiation of rack cabinet 5100 internal electric components and parts.
Particularly, as Fig. 9～shown in Figure 22, described rack cabinet 5100 is provided with installation component 5200, the sidewall of described installation component 5200 convexes with lug 5210, lug 5210 can be convexly set in the side of installation component 5200 and can fit in the surface of channel-section steel 5110, offers the installation perforation 5211 corresponding with described installation through hole 5111 on the described lug 5210, like this, can installation component 5200 be lock onto on the rack cabinet 5100 reliably by screw etc., shock resistance is good.
Particularly, as Fig. 9～shown in Figure 22, also can crossbeam 5130 be set at rack cabinet 5100, offer the installation aperture of a plurality of dense arrangement on the crossbeam 5130, crossbeam 5130 can be fixed on the installation through hole 5111 suitable on the channel-section steel 5110 according to actual conditions, can be according to the practical situation flexible of reality, to adapt to different situations.Correspondingly, the lug 5210 on the installation component 5200 can be convexly set in the lower end of installation component 5200 and can fit in the upper surface of crossbeam 5130.The continuous hole of installation on the lug 5210 can be connected on the suitable installation aperture as the case may be, and its mounting means is flexible, and versatility is good.
Fig. 9～shown in Figure 22, be the embodiment of the invention provide be used for depositing anti-seismic structure for nuclear power station emergency power supply system current converter.
Particularly, as Fig. 9～shown in Figure 22, described rack cabinet 5100 is provided with for rack cabinet 5100 being divided into two layers interval base plate 5400, so that install and fix different parts at least.
Particularly, as Fig. 9～shown in Figure 22, the drift angle place, bottom of described interval base plate 5400 is set with fixed head 5410, offer the fixed via 5411 that is complementary with described installation through hole 5111 on the described fixed head 5410, so that neatly interval base plate 5400 is fixed in corresponding position on the rack cabinet 5100, specifically can adjust flexibly according to actual conditions, different with the rack of prior art median septum fixed-site, its gap of adjusting between layer and the layer is very convenient, and the user can adjust according to actual conditions are on-the-spot.
Preferably, as Fig. 9～shown in Figure 22, described interval base plate 5400 is fixedly connected on the described channel-section steel 5110 by locking member, and its easy accessibility and reliable in structure are even still can make at interval base plate 5400 fix reliably under limiting cases such as earthquake.
Preferably, as Fig. 9～shown in Figure 22, described locking member is bolt, and described locking member is arranged in described fixed via 5411 and through hole 5111 is installed, and bolt adopts the bolt more than 6.8 grades, to guarantee reliability of structure.
Particularly, as Fig. 9～shown in Figure 22, be arranged with spring shim on the described fastening bolt, to improve reliability of structure.
Particularly, as Fig. 9～shown in Figure 22, offer the installation groove that wears for for cable 5510 on the described rack cabinet 5100, described installation groove place is provided with netted coil holder 5500, and cable 5510 is arranged in the mesh of coil holder 5500 and fastens on coil holder 5500 by binding strap 5520; Fill out and be provided with fire-proof sealing material at described installation groove place.
Particularly, as Fig. 9～shown in Figure 22, the bottom of described rack cabinet 5100 is provided with installation portion, rack cabinet 5100 is fixed on the installed surface, be embedded with built-in fitting 5600 in the installed surface, described built-in fitting 5600 is provided with screw hole 5601, and described installation portion lock onto in the screw hole 5601 of built-in fitting 5600 by securing member, by such design, rack cabinet 5100 is fixed on the built-in fitting 5600 reliably.Built-in fitting 5600 is embedded under the installed surface, and it is very firm.
Preferably, as Fig. 9～shown in Figure 22, described securing member is bolt, is arranged with elastomeric pad on the described bolt, to improve reliability of structure.
Particularly, as Fig. 9～shown in Figure 22, on the described installation component 5200 pcb board 5300 is arranged fixedly, four jiaos of described pcb board 5300 and center all offer fixedly perforation 5301, by such fixed form, pcb board 5300 can be fixed on the rack cabinet 5100 reliably.Described pcb board 5300 is arranged with the insulation cushion 5310 of the damping of can insulating by connector locking on the described connector, insulation cushion 5310 can adopt elastomeric material to make, elasticity is good on the one hand for it, and damping performance is good, on the other hand, its insulation property are good, can improve the anti-seismic performance of equipment.
Perhaps, as Fig. 9～shown in Figure 22, replacement scheme as above-mentioned technology, described rack cabinet 5100 is provided with slot 5700, described slot 5700 is oppositely arranged, described pcb board 5300 is inserted in two slots 5700 that arrange relatively, and its shock resistance is good, is provided with cushioning members in the described slot 5700; Offer locking hole 5701 on the described slot 5700, described pcb board 5300 be provided with can lock with described locking hole 5701 on fixing hole.When pcb board 5300 is installed, only need pcb board 5300 is inserted along slot 5700, and be arranged in fixing hole and locking member by screw etc., thereby pcb board 5300 is lock onto in the slot 5700 reliably, solve the heat dissipation problem of pcb board 5300 on the one hand, improved the shock resistance of pcb board 5300 on the other hand.
Preferably, as Fig. 9～shown in Figure 22, flexible insulating materials such as cushioning members employing rubber are made, it can play good bumper and absorbing shock effect, when the earthquake of high earthquake intensity takes place, cushioning members is the energy of absorbing vibration in time, guarantees that pcb board 5300 does not damage in earthquake, thereby makes equipment be continued operation reliably.
A kind of anti-seismic structure for nuclear power station emergency power supply system current converter provided by the invention, it is by arranging channel-section steel 5110 and reinforced steel beam and girder 5120, increased the structural strength of rack cabinet 5100 greatly, improved anti-seismic performance, to bear the earthquake of high earthquake intensity, rack cabinet 5100 can not be out of shape, and the equipment such as power supply, instrument control device that guarantee also can normally be worked in earthquake, are beneficial to the safe operation that guarantees nuclear power station; By offer the installation through hole 5111 of dense arrangement at channel-section steel 5110, it can easily adjust the installation site of related components according to actual conditions, and the product versatility is good, and application cost is low.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. a nuclear power station emergency power supply current converter is characterized in that, described nuclear power station emergency power supply current converter comprises:
The multichannel convertor unit, the interchange side joint bus rod of described each road convertor unit, the direct current side joint dc bus of described each road convertor unit;
Output with each road convertor unit is connected respectively, gathers the sampling unit of the output signal of telecommunication of each road convertor unit;
A plurality of built-in controllers that are connected with the described convertor unit of multichannel respectively, the IGBT switch conduction and the turn-off time that are used for the described multichannel convertor unit of control are synchronous fully; And
The central controller that is connected with a plurality of built-in controllers with described sampling unit respectively is used for the signal of telecommunication gathered according to described sampling unit, controls described a plurality of built-in controller.
2. nuclear power station emergency power supply current converter as claimed in claim 1, it is characterized in that, described multichannel convertor unit is multichannel modularization bi-directional inverter, the interchange side joint bus rod of described each channel modularized bi-directional inverter, the direct current side joint dc bus of described each channel modularized bi-directional inverter.
3. nuclear power station emergency power supply current converter as claimed in claim 2 is characterized in that described sampling unit is:
The interchange side sampling unit that is connected with the interchange side of each channel modularized bi-directional inverter respectively;
The DC side sampling unit that is connected with the DC side of each channel modularized bi-directional inverter respectively.
4. nuclear power station emergency power supply current converter as claimed in claim 3 is characterized in that described built-in controller comprises:
The interchange side sampling module that is connected with the interchange side of a described channel modularized bi-directional inverter;
The DC side sampling module that is connected with the DC side of a described channel modularized bi-directional inverter;
The control module that is connected with described interchange side sampling module, DC side sampling module, central controller and a channel modularized bi-directional inverter respectively, the value of electrical signals that is used for controlling according to the control signal of the signal of telecommunication of described interchange side sampling module and the collection of DC side sampling module and central controller described one channel modularized bi-directional inverter output is identical with default value of electrical signals.
5. nuclear power station emergency power supply current converter as claimed in claim 3 is characterized in that, also is connected with an ac filter unit between the interchange side of described each channel modularized bi-directional inverter and the bus rod;
Also be connected with a direct current filter unit between the DC side of described each channel modularized bi-directional inverter and the dc bus.
6. nuclear power station emergency power supply current converter as claimed in claim 3 is characterized in that, described central controller is connected with described a plurality of built-in controllers respectively by the CAN-BUS bus of two-wire serial communication respectively.
7. nuclear power station emergency power supply current converter as claimed in claim 3 is characterized in that, the signal of telecommunication of described interchange side sampling unit collection comprises alternating voltage, alternating current and phase angle;
The signal of telecommunication of described DC side sampling unit collection comprises direct voltage and direct current.
8. nuclear power station emergency power supply current converter as claimed in claim 1, it is characterized in that, described multichannel convertor unit is multichannel modularization rectifier, the interchange side joint bus rod of described each channel modularized rectifier, the direct current side joint dc bus of described each channel modularized rectifier.
9. nuclear power station emergency power supply current converter as claimed in claim 8 is characterized in that described sampling unit is:
The DC side sampling unit that is connected with the DC side of each channel modularized rectifier respectively.
10. nuclear power station emergency power supply current converter as claimed in claim 9 is characterized in that described built-in controller comprises:
The DC side sampling module that is connected with the DC side of a described channel modularized rectifier;
The control module that is connected with described DC side sampling module, central controller and a channel modularized rectifier respectively, be used for according to the signal of telecommunication of described DC side sampling module collection and the control signal of central controller, make the value of electrical signals of described one channel modularized rectifier output identical with default value of electrical signals.
11. nuclear power station emergency power supply current converter as claimed in claim 9 is characterized in that, also is connected with an ac filter unit between the interchange side of described each channel modularized rectifier and the bus rod;
Also be connected with a direct current filter unit between the DC side of described each channel modularized rectifier and the dc bus.
12. nuclear power station emergency power supply current converter as claimed in claim 9 is characterized in that, described central controller is connected with described a plurality of built-in controllers respectively by the CAN-BUS bus of two-wire serial communication respectively.
13. nuclear power station emergency power supply current converter as claimed in claim 9 is characterized in that the signal of telecommunication of described DC side sampling unit collection comprises direct voltage and direct current.
14. nuclear power station emergency power supply current converter as claimed in claim 1, it is characterized in that, described multichannel convertor unit is multichannel modularization inversion device, the interchange side joint bus rod of described each channel modularized inverter, the direct current side joint dc bus of described each channel modularized inverter.
15. nuclear power station emergency power supply current converter as claimed in claim 14 is characterized in that described sampling unit is:
The interchange side sampling unit that is connected with the interchange side of each channel modularized inverter respectively.
16. nuclear power station emergency power supply current converter as claimed in claim 15 is characterized in that described built-in controller comprises:
The interchange side sampling module that is connected with the interchange side of a described channel modularized inverter;
The control module that is connected with described interchange side sampling module, central controller and a channel modularized inverter respectively, be used for according to the signal of telecommunication of described interchange side sampling module collection and the control signal of central controller, make the value of electrical signals of described one channel modularized inverter output identical with default value of electrical signals.
17. nuclear power station emergency power supply current converter as claimed in claim 15 is characterized in that, also is connected with an ac filter unit between the interchange side of described each channel modularized inverter and the bus rod;
Also be connected with a direct current filter unit between the DC side of described each channel modularized inverter and the dc bus.
18. nuclear power station emergency power supply current converter as claimed in claim 15 is characterized in that, described central controller is connected with described a plurality of built-in controllers respectively by the CAN-BUS bus of two-wire serial communication respectively.
19. nuclear power station emergency power supply current converter as claimed in claim 15 is characterized in that, the signal of telecommunication of described interchange side sampling unit collection comprises alternating voltage, alternating current and phase angle.
20. the synchronous working control method of a nuclear power station emergency power supply current converter as claimed in claim 1 is characterized in that described control method comprises the steps:
Described a plurality of built-in controller is gathered the value of electrical signals of multichannel convertor unit output respectively;
Described central controller calculates signal of telecommunication mean value according to described value of electrical signals;
Described sampling unit is gathered the real-time and column electrical signal mean value of the signal of telecommunication numerical value of multichannel convertor unit output;
Described central controller calculates signal of telecommunication mean difference according to described signal of telecommunication mean value and real-time and column electrical signal mean value, and described signal of telecommunication mean difference is decomposed the value of being compensated;
Described a plurality of built-in controller value of being compensated, and the signal of telecommunication of the control convertor unit corresponding with described built-in controller output make the signal of telecommunication of described multichannel convertor unit output synchronous.
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| CN 201110131089 CN102208828B (en) | 2011-05-20 | 2011-05-20 | Emergency power source current conversion device for nuclear power station and control method |
| CN201310075887.6A CN103208752B (en) | 2011-05-20 | 2011-05-20 | A kind of anti-seismic structure for nuclear power station emergency power supply system current converter |
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| CN 201110131089 CN102208828B (en) | 2011-05-20 | 2011-05-20 | Emergency power source current conversion device for nuclear power station and control method |
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| CN 201110131089 Active CN102208828B (en) | 2011-05-20 | 2011-05-20 | Emergency power source current conversion device for nuclear power station and control method |
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| CN102629778B (en) * | 2011-11-09 | 2014-03-26 | 广东志成冠军集团有限公司 | Multi-system modularization emergency power supply (EPS) |
| CN104300669B (en) * | 2014-09-15 | 2016-05-11 | 中广核核电运营有限公司 | Nuclear power station dc source mixed power supply system |
| CN104901171A (en) * | 2015-05-13 | 2015-09-09 | 厦门科华恒盛股份有限公司 | Earthquake-resistant cabinet |
| CN105934129B (en) * | 2016-06-02 | 2017-07-18 | 国网浙江永康市供电公司 | A kind of regulator cubicle for bearing superpower impact |
| FI128052B (en) * | 2018-04-16 | 2019-08-30 | Lappeenrannan Teknillinen Yliopisto | A power converter for a bioelectrochemical system |
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| US6965075B2 (en) * | 2001-03-01 | 2005-11-15 | Nitto Electric Works, Ltd. | Frame for electrical and electronic equipment housing cabinets and a frame joining structure |
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| CN103208752A (en) | 2013-07-17 |
| CN102208828A (en) | 2011-10-05 |
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Owner name: CHINA GENERAL NUCLEAR GROUP CO., LTD. Free format text: FORMER NAME: CHINA GUANGDONG NUCLEAR POWER GROUP CO., LTD. |
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Address after: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee after: China General Nuclear Power Corporation Patentee after: Dayawan Nuclear Power Running Management Co., Ltd. Address before: Shenzhen science and technology building, No. 1001 Futian District Road, Shenzhen city in Guangdong province 518031 17-19 floor Patentee before: China Guangdong Nuclear Power Group Co., Ltd. Patentee before: Dayawan Nuclear Power Running Management Co., Ltd. |