CN202111518U - Emergency power supply applied in nuclear power station hydraulic pressure test system and monitoring system after accident - Google Patents
Emergency power supply applied in nuclear power station hydraulic pressure test system and monitoring system after accident Download PDFInfo
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- CN202111518U CN202111518U CN2011201619716U CN201120161971U CN202111518U CN 202111518 U CN202111518 U CN 202111518U CN 2011201619716 U CN2011201619716 U CN 2011201619716U CN 201120161971 U CN201120161971 U CN 201120161971U CN 202111518 U CN202111518 U CN 202111518U
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- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
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Abstract
The utility model is suitable for the nuclear power control field, and an emergency power supply applied in a nuclear power station hydraulic pressure test system and a monitoring system after accident is provided, including a distribution bus, a normal power supply and a turbo generator set. The emergency power supply also includes an energy storage system, a controllable first switch, a controllable second switch, a controllable third switch and a load device. The normal power supply, the turbo generator set and the energy storage system are connected with the distribution bus and the total power supply line in parallel respectively through the first switch, the second switch and the third switch. Because the energy storage system is a passive device, stable and reliable power supply can be supplied through the close of the switch when in need, the reliability of the nuclear power station emergency power supply is greatly enhanced, and the safety horizontal of the nuclear power station is raised.
Description
Technical field
The utility model relates to million kilowatt advanced pressurized water reactor nuclear power plant key technology battery management technology, relates in particular to the emergency power supply that is used for nuclear power station hydraulic test system and Post Accident Monitoring System.
Background technology
Nuclear power station (nuclear power plant) be utilize that the reaction of nuclear fission (Nuclear Fission) or nuclear fusion (Nuclear Fusion) discharged energy produce the power plant of 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, in slave unit, the measure multiple protective is provided, and to guarantee nuclear power station the power output of reactor is effectively controlled; And can various natural calamities appear; Like 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 handling abnormal conditions 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 launch 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 launch inside and outside all emergency systems of factory, make great efforts to alleviate the influence of accident to surrounding resident and environment.
Safety system all adopts autonomous device and redundant arrangement, makes that safety system can be antiseismic and in other adverse circumstances, move.
Move in other adverse circumstances.
No matter power supply is provided with 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 for the emergent safety means of nuclear power station provide power supply, with the execution 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, and cooperation is arranged again simultaneously mutually; Not only various informative; And be provided with 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 following:
1) under normal running (operation) conditions, the distribution system of whole station-service equipment is supplied power through HV Auxiliary Transformer by the 26KV bus of unit;
2) when unit operation, the 26KV bus is supplied power by main generator;
3) during generator outage, then send 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, promptly 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 by emergency diesel dynamo group (two emergency diesel dynamos of a machine assembly) to emergent station-service power devices, make reactor get into the cold shut state;
6) when any emergency diesel dynamo group of nuclear power generating sets is unavailable, then replace 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 Conversion of energy of diesel oil is electric energy; Must be through 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.Drive the rotor of generator again through the rotation of stationary diesel engine, utilize " electromagnetic induction " principle, generator will be exported induced electromotive force, just can produce electric current through closed load circuit, thereby realizes electricity generate function.In the above-mentioned power generation process, must could realize with fully mixing of high-pressure atomization diesel oil through air.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, and 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, as the fixed emergency diesel-oil unit of the final emergency power supply of nuclear power station, because himself characteristic has determined it can not resist the water logging disaster---like 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 the power demand that the reactor core waste heat is discharged and cool off in the spent fuel pond be provided for nuclear power station, and this will cause nuclear power station to produce catastrophic consequence.
Promptly in existing nuclear power plant, the emergency power supply of hydraulic test system and Post Accident Monitoring System is a turbo generator set, and turbo generator set is utilized the afterheat steam driving steam turbine rotation of nuclear power station, and then drives generator for electricity generation.Because the pressure and temp fluctuation range of afterheat steam is very wide, causes the governing system of steam turbine must be accurately and reliably, thereby reduced the global reliability of turbo generator set.
The utility model content
The purpose of the utility model is to provide a kind of emergency power supply that is used for nuclear power station hydraulic test system and Post Accident Monitoring System, is intended to solve the low problem of the existing global reliability that brings as emergency power supply through turbo generator set.
The utility model is to realize like this; The emergency power supply that is used for nuclear power station hydraulic test system and Post Accident Monitoring System; Comprise distribution bus, normal power source and turbo generator set; Said emergency power supply also comprises energy-storage system; The first controlled switch, second switch and the 3rd switch, total supply line that load equipment, said normal power source, turbo generator set and energy-storage system are connected to distribution bus and are connected with load equipment through first switch, second switch and the 3rd switch in parallel respectively.
Further, said load equipment comprises at least one in the monitoring system and hydraulic test system behind the nuclear power plant accident.
Further, said hydraulic test system comprises the motor of the hydraulic testpump that is connected to distribution bus, and the hydraulic testpump that is connected with the motor of hydraulic testpump.
Further, said energy-storage system comprises the converter that is connected through the 3rd switch with distribution bus, and the array that is connected with converter.
Further, array comprises a plurality of battery modules that are connected in parallel, and each battery modules comprises a plurality of strings and/or the cell that is connected in parallel.
Further, said converter is made up of one or more converters, and said converter has rectification and invert function.
Further, the array of said energy-storage system uses 690V or 380V three phase mains to one one or the power supply of multi-section low-tension motor via one or more converters.
In the utility model embodiment, through a kind of emergency power supply is provided, through this accumulation electrical source is applied in hydraulic test system and Post Accident Monitoring System; Because energy-storage system is non-active equipment; As long as close switch just can provide reliable and stable power supply, significantly strengthen the reliability of nuclear power station emergency power supply when needed, improved the lsafety level of nuclear power station; And energy-storage system has high energy storage density; Can be designed as the stored energy capacitance that satisfies the requirement of nuclear power station emergency power supply, satisfy the power-on time of the former emergency power supply of nuclear power station, like 20h.
Description of drawings
Fig. 1 is the structure of the emergency power supply that is used for nuclear power station hydraulic test system and Post Accident Monitoring System that provides of the utility model embodiment;
Fig. 2 is the concrete structure of the energy-storage system that provides of the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the utility model embodiment; A kind of emergency power supply is provided; Through this energy-storage system being applied in monitoring system behind hydraulic test system and the nuclear power plant accident, because energy-storage system is non-active equipment, when needed as long as close switch just can provide reliable and stable power supply; Significantly strengthen the reliability of nuclear power station emergency power supply, improved the lsafety level of nuclear power station.
Fig. 1 shows the structure of the emergency power supply that is used for hydraulic test system and Post Accident Monitoring System that the utility model embodiment provides, and for the ease of explanation, only shows the part relevant with the utility model.
This is used for, and the emergency power supply of monitoring system comprises distribution bus 1 behind hydraulic test system and the nuclear power plant accident, normal power source 2, turbo generator set 3, energy-storage system 4, load equipment, and controlled first switch 5, second switch 6 and the 3rd switch 7.
Wherein normal power source 2 comprises a power supply unit especially, and this power supply unit is connected to the electrical network that AC power is provided to nuclear power station, also comprises a rectifier, and voltage is the direct current of 125V in order to for example to obtain.
On the structure of energy-storage system 4 with function on characteristic will explain hereinafter.
Wherein load equipment can be for any one load equipment of emergency power supply need be provided in the nuclear power station, and in the utility model embodiment, load equipment comprises Post Accident Monitoring System 8 and hydraulic test system 9.
Wherein hydraulic test system 9 comprises the motor 91 of the hydraulic testpump that is connected to distribution bus 1, and the hydraulic testpump 92 that is connected with the motor 91 of hydraulic testpump.
Controlled first switch 5 is positioned on each branch circuit with second switch 6, wherein first switch 5 and second switch 6 total supply line of respectively normal power source 2 and turbo generator set 3 being connected to distribution bus 1 and being connected with load equipment.
In the utility model embodiment, this emergency power supply also comprises the energy-storage system 4 that is connected in parallel to distribution bus 1 with normal power source 2, turbo generator set 3, and energy-storage system 4 is connected to distribution bus 1 through the 3rd switch 7.
See also Fig. 2, the concrete structure of the energy-storage system 4 that provides for the utility model embodiment, this energy-storage system 4 comprise converter 41 that is connected through the 3rd switch 7 with distribution bus 1 and the array 42 that is connected with converter 41.Wherein array 42 comprises a plurality of battery modules that are connected in parallel, and each battery modules comprises a plurality of strings and/or the cell that is connected in parallel.The array 42 of energy-storage system 4 for example uses 690V or 380V three phase mains to come to one one or the power supply of multi-section low-tension motor via a converter 41 or a plurality of converters 41.
Wherein converter 41 is made up of one or more converters, and this converter has rectification and invert function.
When but the normal power source 2 that leads to distribution bus 1 and each load equipment be the time spent, first switch, 5 closures, second switch 6 and the 3rd switch 7 are opened a way simultaneously.At this moment, distribution bus 1 and each load equipment are by normal power source 2 power supplies.
When normal power source 2 lost efficacy, through making first switch 5 and the 3rd switch 7 open circuits,, turbo generator set is come into operation with seasonal second switch 6 closures, distribution bus 1 and each load equipment are promptly by turbo generator set 3 power supplies.
When normal power source 2 and turbo generator set 3 all lost efficacy, through making first switch 5 and second switch 6 open circuits,, energy-storage system is come into operation with the 3rd switch 7 closures in season, distribution bus 1 and each load equipment are promptly by energy-storage system 4 power supplies.The continuity of the power supply that has improved so, just can be provided.
Particularly; As depicted in figs. 1 and 2; Array 42 can be used to via each hermetic unit of at least three main pumps of hydraulic testpump 92 inverse nuclear reactions heap successional water supply is provided; Above-mentioned hydraulic testpump 92 is designed to like this: when the normal power supply to hydraulic testpump 92 takes place to interrupt, just made motor 91 rotations of hydrostatic test pump to motor 91 power supplies of hydrostatic test pump by energy-storage system 4.
The motor 91 that is used to drive hydraulic testpump 92 is via the three-phase alternating-current supply power supply of a converter 41 by 380V voltage, and the direct current that above-mentioned converter 41 is used for the array 42 with energy-storage system and is provided is transformed to three-phase alternating current.
Suppose that but energy-storage system 4 is times spent, the emergency power supply of monitoring system 8 and hydraulic test system 9 behind each accessory that is sent to nuclear reactor such as the nuclear power plant accident just can be provided by energy-storage system 4.
Because various energy-storage systems possibly have high power density, so they can be fully independently in the time that prolongs, correctly to each each circuit supply that links to each other with distribution bus.
Energy-storage system has high energy storage density, can be designed as the stored energy capacitance that satisfies the requirement of nuclear power station emergency power supply, satisfies the power-on time of the former emergency power supply of nuclear power station, like 20h.
Energy-storage system is non-active equipment, as long as close switch just can provide reliable and stable power supply, has significantly strengthened the reliability of nuclear power station emergency power supply when needed, has improved the lsafety level of nuclear power station.
With regard to 1 hour working life, can be to the overall dimensions of an energy-storage system of a distribution bus and the power supply of one group of user part basically much smaller than the size of normally used various batteries (220V, 125V, 48V, or 30V).
Might use (undersized) energy-storage system to come monitoring of each piece and control board power supply, perhaps, in contrast, use the energy-storage system of more high-power and a large-size, come to monitor and control board is supplied power to one group to nuclear power station.
As stated, energy-storage system relates to the pump power supply to each hermetic unit that water is injected into a pump as another application of emergency power supply.
Have, energy-storage system also has such advantage again, that is, it starts or move without any need for extra power, thereby it is fully independently.
And; The starting of energy-storage system is very fast; And when each accessory that only after power-fail, needs energy-storage system inverse nuclear reaction heap provides electric current; In fact energy-storage system just puts into operation, and this all is favourable for energy-storage system is used as all application scenarios of emergent electric energy.
The embodiment that the present invention is not limited to narrate.
Yet energy-storage system shown in Figure 2 is suitable for especially being integrated in the system of nuclear power station and goes.
The present invention is not limited to be used for water is injected into the emergency service of pump of each hermetic unit of a pump of a pressure water reactor; But also any power supply that can be applied to alleviate in nuclear power station was lost efficacy; Each accessory to this power station provides direct current power supply simultaneously; Above-mentioned each accessory comprises various little pump or motor, various circuit breakers, is used for the switch of various automatic controllers, and perhaps any other is with the low-voltage equipment of direct current or Alternating Current Power Supply.
Therefore, might under the situation of power supply generation global failure, provide each pump of Emergency water supply to supply power, so that make the reactor cooling to the steam generator of giving reactor.
Being used for these pump motors is powered under the voltage of 690V.
So, for a reactor that designs recently, replace each auxiliary supply-water pump with two emergency pumps that need be powered in these cases.
Current, two Diesel's (diesel oil) generators that only are used for the emergency service function are provided.Each one in these little diesel engines can be replaced by at least one energy-storage system.
In the utility model embodiment, through a kind of emergency power supply is provided, through this accumulation electrical source is applied in hydraulic test system and Post Accident Monitoring System; Because energy-storage system is non-active equipment; As long as close switch just can provide reliable and stable power supply, significantly strengthen the reliability of nuclear power station emergency power supply when needed, improved the lsafety level of nuclear power station; And energy-storage system has high energy storage density; Can be designed as the stored energy capacitance that satisfies the requirement of nuclear power station emergency power supply, satisfy the power-on time of the former emergency power supply of nuclear power station, like 20h.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.
Claims (7)
1. the emergency power supply that is used for nuclear power station hydraulic test system and Post Accident Monitoring System; Comprise distribution bus, normal power source and turbo generator set; It is characterized in that said emergency power supply also comprises energy-storage system, the first controlled switch, second switch and the 3rd switch; Total supply line that load equipment, said normal power source, turbo generator set and energy-storage system are connected to distribution bus and are connected with load equipment through first switch, second switch and the 3rd switch in parallel respectively.
2. emergency power supply as claimed in claim 1 is characterized in that, said load equipment comprises at least one in Post Accident Monitoring System and the hydraulic test system.
3. emergency power supply as claimed in claim 2 is characterized in that, said hydraulic test system comprises the motor of the hydraulic testpump that is connected to distribution bus, and the hydraulic testpump that is connected with the motor of hydraulic testpump.
4. emergency power supply as claimed in claim 1 is characterized in that said energy-storage system comprises the converter that is connected through the 3rd switch with distribution bus, and the array that is connected with converter.
5. emergency power supply as claimed in claim 4 is characterized in that, array comprises a plurality of battery modules that are connected in parallel, and each battery modules comprises a plurality of strings and/or the cell that is connected in parallel.
6. emergency power supply as claimed in claim 4 is characterized in that said converter is made up of one or more converters, and said converter has rectification and invert function.
7. emergency power supply as claimed in claim 4 is characterized in that, the array of said energy-storage system uses 690V or 380V three phase mains to one one or the power supply of multi-section low-tension motor via one or more converters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201619716U CN202111518U (en) | 2011-05-20 | 2011-05-20 | Emergency power supply applied in nuclear power station hydraulic pressure test system and monitoring system after accident |
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| CN2011201619716U CN202111518U (en) | 2011-05-20 | 2011-05-20 | Emergency power supply applied in nuclear power station hydraulic pressure test system and monitoring system after accident |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013113289A1 (en) * | 2012-02-02 | 2013-08-08 | 中广核工程有限公司 | Power supply method of cold-state function test in nuclear power plant |
| CN104198952A (en) * | 2014-08-19 | 2014-12-10 | 中广核工程有限公司 | Reliability validation method of 6.6KV mobile emergency power source of nuclear power station |
| CN104198951A (en) * | 2014-08-19 | 2014-12-10 | 中广核工程有限公司 | Reliability validation method of 380V mobile emergency power source of nuclear power station |
| CN104715800A (en) * | 2013-12-17 | 2015-06-17 | 中广核工程有限公司 | Nuclear power plant emergency power source power supply test method and system |
| CN104919677A (en) * | 2012-12-04 | 2015-09-16 | 纽斯高动力有限责任公司 | Managing electrical power for a nuclear reactor system |
| CN105098968A (en) * | 2015-08-18 | 2015-11-25 | 中广核工程有限公司 | Nuclear power plant primary loop hydraulic test power failure control method and system |
| CN105119364A (en) * | 2015-07-30 | 2015-12-02 | 苏州热工研究院有限公司 | Nuclear power plant emergency power supply method and system |
| WO2016169012A1 (en) * | 2015-04-22 | 2016-10-27 | 中广核工程有限公司 | Power supply method and system for hydrostatic test on primary circuit of nuclear power plant |
| CN108933477A (en) * | 2018-07-24 | 2018-12-04 | 岭澳核电有限公司 | Nuclear power plant's hydraulic testpump emergency power supply system |
| CN111237057A (en) * | 2020-01-17 | 2020-06-05 | 岭东核电有限公司 | Safety verification method for nuclear power station hydrostatic test pump turbine generator set system equipment |
| CN114157013A (en) * | 2021-10-28 | 2022-03-08 | 中广核研究院有限公司 | Semi-automatic unloading and loading system and method for nuclear power plant |
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2011
- 2011-05-20 CN CN2011201619716U patent/CN202111518U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013113289A1 (en) * | 2012-02-02 | 2013-08-08 | 中广核工程有限公司 | Power supply method of cold-state function test in nuclear power plant |
| CN104919677A (en) * | 2012-12-04 | 2015-09-16 | 纽斯高动力有限责任公司 | Managing electrical power for a nuclear reactor system |
| CN104919677B (en) * | 2012-12-04 | 2019-01-11 | 纽斯高动力有限责任公司 | The electrical management of nuclear reactor system |
| CN104715800A (en) * | 2013-12-17 | 2015-06-17 | 中广核工程有限公司 | Nuclear power plant emergency power source power supply test method and system |
| CN104198952B (en) * | 2014-08-19 | 2019-01-15 | 中广核工程有限公司 | The reliability verification method of nuclear power station 6.6kV moving emergency power supply |
| CN104198951A (en) * | 2014-08-19 | 2014-12-10 | 中广核工程有限公司 | Reliability validation method of 380V mobile emergency power source of nuclear power station |
| CN104198951B (en) * | 2014-08-19 | 2019-01-15 | 中广核工程有限公司 | The reliability verification method of nuclear power station 380V moving emergency power supply |
| CN104198952A (en) * | 2014-08-19 | 2014-12-10 | 中广核工程有限公司 | Reliability validation method of 6.6KV mobile emergency power source of nuclear power station |
| WO2016169012A1 (en) * | 2015-04-22 | 2016-10-27 | 中广核工程有限公司 | Power supply method and system for hydrostatic test on primary circuit of nuclear power plant |
| CN105119364A (en) * | 2015-07-30 | 2015-12-02 | 苏州热工研究院有限公司 | Nuclear power plant emergency power supply method and system |
| CN105119364B (en) * | 2015-07-30 | 2017-11-14 | 苏州热工研究院有限公司 | A kind of nuclear power plant's emergency service method and system |
| CN105098968A (en) * | 2015-08-18 | 2015-11-25 | 中广核工程有限公司 | Nuclear power plant primary loop hydraulic test power failure control method and system |
| CN108933477A (en) * | 2018-07-24 | 2018-12-04 | 岭澳核电有限公司 | Nuclear power plant's hydraulic testpump emergency power supply system |
| CN111237057A (en) * | 2020-01-17 | 2020-06-05 | 岭东核电有限公司 | Safety verification method for nuclear power station hydrostatic test pump turbine generator set system equipment |
| CN114157013A (en) * | 2021-10-28 | 2022-03-08 | 中广核研究院有限公司 | Semi-automatic unloading and loading system and method for nuclear power plant |
| CN114157013B (en) * | 2021-10-28 | 2024-01-30 | 中广核研究院有限公司 | Semi-automatic unloading and loading system and method for nuclear power plant |
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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. |
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