CN109390980A - Nuclear power peak regulation system and method based on desalination technology - Google Patents
Nuclear power peak regulation system and method based on desalination technology Download PDFInfo
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- CN109390980A CN109390980A CN201811439463.2A CN201811439463A CN109390980A CN 109390980 A CN109390980 A CN 109390980A CN 201811439463 A CN201811439463 A CN 201811439463A CN 109390980 A CN109390980 A CN 109390980A
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- 238000010612 desalination reaction Methods 0.000 title claims abstract description 146
- 230000033228 biological regulation Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 241000196324 Embryophyta Species 0.000 claims abstract description 122
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims abstract description 4
- 239000013535 sea water Substances 0.000 claims description 60
- 238000002156 mixing Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000013505 freshwater Substances 0.000 claims description 14
- 238000000108 ultra-filtration Methods 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 9
- 238000011161 development Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 11
- 229910052801 chlorine Inorganic materials 0.000 description 11
- 239000000460 chlorine Substances 0.000 description 11
- 238000011033 desalting Methods 0.000 description 9
- 238000001223 reverse osmosis Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009429 electrical wiring Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The present invention proposes a kind of nuclear power peak regulation system and method based on desalination technology, it is characterized in that, wherein peak regulation system includes: to be divided into the A group of concurrent working and multiple desalination plants of B group and be divided into the A group of concurrent working and multiple Zhi Lv factories of B group, is concurrent working between each group of each desalination plant；The Zhi Lv factory of desalination plant's connection A group of A group, forms first group of joint desalination plant；The Zhi Lv factory of desalination plant's connection B group of B group, forms second group of joint desalination plant；Desalination plant and Zhi Lv factory are powered by nuclear power unit, and each desalination plant is independently-powered.Peak regulating method enables nuclear power unit overfill power operation in load boom period, and one group of production out of service in two groups of joint desalination plants puts into operation simultaneously in two groups of joint desalination plants of non-peak period.In the way of water-electricity cogeneration, meet the requirement that nuclear power unit participates in peak regulation, extend nuclear power tape base lotus runing time, improves nuclear power unit minimum operation power, and then improve the safety and economy of nuclear power operation.
Description
Technical field
The present invention relates to nuclear power operation control and peak regulation technique field more particularly to a kind of cores based on desalination technology
Electric peak regulation system and method.
Background technique
The existing nuclear power peak regulation system based on desalination technology is for general on the load valley phase using sea water desalination
A part of electric energy is used for the production of sea water desalination as load by the facilities such as factory, improves the load capacity of load valley phase, thus
Minimum operation power of the nuclear power unit in the load valley phase is improved, this method is able to ascend nuclear power unit and is participating in peak regulation process
In safety and economy.With nuclear power unit put into fortune capacity it is continuous increase and nuclear power unit single-machine capacity it is continuous
Increase, the capability of influence that small-scale seawater desalting plant participates in peak regulation to large capacity nuclear power unit is lower and to natural environment
It is affected.Its reason is: firstly, the electricity capacity of small-scale seawater desalting plant is lower relative to large capacity nuclear power unit,
It is difficult to be promoted nuclear power unit in the minimum operation power of load valley phase, if directly building big electricity capacity seawater desalting plant,
Switching will impact the stable operation of nuclear power unit；Secondly, the discarded seawater that seawater desalting plant is discharged in the prior art
The mode of direct emission is mostly used, and the discarded seawater through seawater desalting plant's discharge is all much higher than nature in temperature and salinity
Seawater in environment will cause to seriously affect without processing direct emission to the marine eco-environment and biotic population；Finally, existing
Technology mostly uses greatly the mode of distillation, low compared with Reverse-osmosis Seawater Desalination Technology in desalination efficiency, for the north and southern winter
Etc. the lower situation of ocean temperatures, low temperature seawater be unable to reach the optimum working temperature of reverse osmosis membrane.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of based on desalination technology
Nuclear power peak regulation system and method, it is intended to solve the existing nuclear power peak regulation system based on desalination technology in peak modulation capacity and right
The deficiency of the utilization of existence conditions, influence to natural environment etc..
To achieve the above object, the present invention specifically uses following technical scheme:
A kind of nuclear power peak regulation system based on desalination technology characterized by comprising be divided into the A group and B group of concurrent working
Multiple desalination plants and be divided into the A group of concurrent working and multiple Zhi Lv factories of B group, be between each group of each desalination plant
Concurrent working；The Zhi Lv factory of desalination plant's connection A group of A group, forms first group of joint desalination plant；Desalination plant's connection B group of B group
Zhi Lv factory forms second group of joint desalination plant；The desalination plant and Zhi Lv factory are powered by nuclear power unit, and each desalination plant is only
Vertical power supply.
Preferably, the desalination plant has 12, and A group desalination plant is divided into six grades of desalination plants, and B group desalination plant is divided into six grades of desalinations
Factory.
Preferably, being somebody's turn to do the nuclear power peak regulation system based on desalination technology includes: ultrafiltration plants, heat exchanger, desalination plant, chlorine processed
Factory, mixing pit and cooling tower；The ultrafiltration plants extract the low temperature seawater under natural environment and remove non-soluble impurity, and export useless
Liquid and low temperature seawater without containing non-soluble impurity, wherein waste liquid is delivered to mixing pit, the low temperature sea without containing non-soluble impurity
Water is delivered to heat exchanger；The heat exchanger includes cold water-changing tube and hot water-changing tube, and the both ends of the hot water-changing tube are separately connected core
The both ends of the steam turbine and cooling tower of motor group, the cold water-changing tube are separately connected ultrafiltration plants and desalination plant；The desalination plant
Fresh water and high temperature concentrated seawater are exported, wherein fresh water is delivered to user side and cooling tower respectively, and high temperature concentrated seawater is delivered to Zhi Lv factory；
The high temperature brackish water that the Zhi Lv factory production obtains, which is discharged into, is delivered to mixing pit；The mixing pit connects sea through open channel.
And the peak regulating method according to the nuclear power peak regulation system based on desalination technology, which is characterized in that including with
Lower step:
Step S1: real-time monitoring electric system power load simultaneously provides the load fluctuation situation in period of unit time；
Step S2: judge that current power load is in which of load fluctuation in period, and take corresponding control measure, wherein bearing
The period of lotus fluctuation includes: load rising stage, the load stage of stable development and load decline phase；Step is then gone to if the load rising stage
S31 then goes to step S32 if the load stage of stable development, then goes to step S33 if the load decline phase；
Step S3: according to the period of load fluctuation, corresponding control measure are taken, comprising:
Step S31: if current power load is in the load rising stage, nuclear power unit power per liter is run, and according to two groups of joints
The maintenance situation of desalination plant's the last time is judged, if first group of joint desalination plant is the last joint desalination overhauled
Factory is then sequentially stopped transport and is overhauled one by one by each desalination plant in second group of joint desalination plant, first group of joint desalination plant
Remain operational state；If second group of joint desalination plant is the last joint desalination plant overhauled, first group of joint desalination
Each desalination plant in factory sequentially stops transport and is overhauled step by step, and second group of joint desalination plant remains operational state；
Step S32: if current power load is in the load stage of stable development, each machine of nuclear power unit and two groups of joint desalination plants is kept
Group power output is constant；
Step S33: if current power load is in load decline phase, nuclear power unit downrating, and it will be in and stop transport
It sequentially puts into production step by step one group of joint desalination plant of inspecting state；
Step S4: return step S1 enters the monitoring of next cycle.
Preferably, judge that current power load is in which of load fluctuation in period and passes through following criterion in step s 2:
(1)
In (1) formula, P represents the power load of electric system, subscripttRepresent the currently monitored period, subscriptiniWithendPoint
Initial time and the terminal moment in the period are not represented.
The present invention and its peak regulating method that is related to of preferred embodiment enable nuclear power unit overfill power operation in load boom period, and two groups
One group of production out of service in joint desalination plant puts into operation simultaneously in two groups of joint desalination plants of non-peak period, and in sea water temperature
The pre-heat treatment is carried out to the seawater for entering desalination by reverse osmosis factory using the steam residual temperature of the steam turbine of nuclear power unit when spending lower,
Chlorine processed is carried out to the concentrated seawater of desalination plant's discharge to desalt, and gives off salinity and temperature seawater identical with natural environment；Building
Peak regulation system include nuclear power unit, ultrafiltration sea water preprocessing factory, combined with what Zhi Lv factory formed by reverse osmosis seawater desalting factory
The facilities such as desalination plant, mixing pit, open channel.In the way of water-electricity cogeneration, meet the requirement that nuclear power unit participates in peak regulation, extends core
Electric tape base lotus runing time improves nuclear power unit minimum operation power, and then improves the safety and economy of nuclear power operation, secondary
Fresh water is produced to meet the needs of power plant itself and urban subscriber, by-product chlorine product meets other industrial trade demands.
The present invention and its main beneficial effect of preferred embodiment are: being made firstly, providing using two groups of joint desalination plants
Capacity foot of the joint desalination plant as load was both ensure that in such a way that two groups of A, B are alternately stopped transport maintenance for the mode of load
It is enough big, also ensure that joint desalination plant there are enough repair times to guarantee peak regulation stability, and to every on electrical wiring
Desalting plants at different levels in one group are individually controlled, and the mode of switching can guarantee joint desalination plant as load step by step
When, the operation of nuclear power unit will not be impacted because desalination load variations are excessive；Secondly, the addition of Zhi Lv factory not only may be used
To reduce the salinity in discarded seawater, can be increased economic efficiency, mixing pit and open channel are then used for by-product industry chlorine product
Reduce discarded ocean temperature, the two combine can guarantee the discarded seawater finally discharged in temperature and salinity with natural environment
It is identical, reach environmental-friendly standard；Finally, using nuclear power unit steam turbine residual steam in heat exchanger to seawater
It is heated, the working efficiency of reverse osmosis membrane, the heat exchange side of one side heat exchanger has on the one hand been ensured when environment temperature is lower
Formula ensure that the seawater after desalination not by the pollution of nuclear radiation.
Detailed description of the invention
The present invention is described in more detail with reference to the accompanying drawings and detailed description:
Fig. 1 is present invention method workflow schematic diagram；
Fig. 2 is overall system architecture of the embodiment of the present invention (water circulation) schematic diagram；
Fig. 3 is system electrical wiring schematic diagram of the embodiment of the present invention；
Fig. 4 is nuclear power unit daily load tracking effect curve synoptic diagram of the embodiment of the present invention；
In figure: 1- ultrafiltration plants；2- waste liquid discharge line；The sea 3-；4- open channel；5- mixing pit；6- heat exchanger；7- nuclear power unit is high
Warm high steam pipeline；The steam turbine of 8- nuclear power unit；9- residual steam discharge line；10- cooling tower；11- supplies user
Fresh water pipeline；12-B Zu Zhi chlorine factory；13-A Zu Zhi chlorine factory；14- concentrated seawater discharge line；15,17- fresh water conveyance conduit；16- into
Water control valve；18- fresh water outlet pipe；Six grades of desalination subsidiary factories of 19 ~ 24-A group desalination plant；Six grades of 25 ~ 30-B group desalination plant
Desalinate subsidiary factory；31- main transformer；32- station-service step-down transformer；33- nuclear power unit generator；34,35,36,37,38,39,
310,311-380V low-voltage bus bar；312-6.6KV one section of high-voltage auxiliary bus；313-A group joint desalination station-service 6.6KV high pressure is female
Line；Six level work unit of 314-A group joint desalination plant；The first emergency diesel dynamo of 315-；316-6.6KV high pressure auxiliary bus-bar
One section；317-6.6KV two sections of high-voltage auxiliary bus；318-6.6KV three sections of high-voltage auxiliary bus；319- external power grid downconverter
Device；320- external power grid connecting line；321-2 unit connecting line；322-B group joint desalination station-service 6.6KV high voltage bus；323-
Four sections of 6.6KV high-voltage auxiliary bus；Six level work unit of 324-B group joint desalination plant；The second emergency diesel dynamo of 325-；
Two sections of 326-6.6KV high pressure auxiliary bus-bar.
Specific embodiment
For the feature and advantage of this patent can be clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make specifically
It is bright as follows:
Invention is further described in detail with reference to the accompanying drawings and examples.
As shown in Fig. 2, the nuclear power peak regulation system provided in this embodiment based on desalination technology, mainly includes with lower part
Point: for removing the ultrafiltration plants 1 of non-soluble impurity, for preheating low temperature using 8 residual steam of steam turbine of nuclear power unit
The heat exchanger 6 of seawater, the desalination plant for being desalinated seawater, for concentrated seawater is carried out salt treatment Zhi Lv factory (by
Desalination plant forms joint desalination plant with Zhi Lv factory), for utilizing natural conditions and low temperature seawater to the high temperature flowed out from Zhi Lv factory
The mixing pit 5 and open channel 4 that seawater cools down.
Wherein, ultrafiltration plants 1 pass through after extracting low temperature seawater under natural environment in sea 3 and removing non-soluble impurity
Waste liquid discharge line 2 arranges waste liquid (low temperature) to mixing pit 5, and the low temperature seawater without containing non-soluble impurity is delivered to heat exchanger
6。
Include cold and hot two heat exchanging water pipes in heat exchanger 6, is converted in nuclear power unit high temperature and high pressure steam pipeline 7 by nuclear energy
High temperature and high pressure steam, in the steam turbine 8 of nuclear power unit complete conversion electric energy acting after, pass through residual steam discharge pipe
Residual steam and hot water feeding hot-water line heat cold water pipe and are recycled into cooling tower 10 by road 9, and ultrafiltration plants 1 filter
To the low temperature seawater without containing non-soluble impurity enter cold water pipe be heated Water pipe heating heat exchange after, be sent into desalination plant.
As the main innovation point of the present embodiment, 12 desalination (being divided to) factories are equally divided into A, B two of independent parallel work
Group, every group is divided into six grades of desalination plants, be also between every level-one it is parallel, can individually open or close, six including A group desalination plant
Six grades of desalination subsidiary factories 25 ~ 30 of grade desalination subsidiary factory 19 ~ 24 and B group desalination plant can be by respectively only for each desalination subsidiary factory
Vertical water inlet control valve 16 controls the inflow of the seawater of the cold water pipe conveying of heat exchanger 6, and will independently flow into from heat exchanger
High temperature seawater is desalinated, through filtering etc. reason obtain fresh water and high temperature concentrated seawater, wherein fresh water by fresh water conveyance conduit 15,
It 17 and is discharged through fresh water outlet pipe 18, and is divided into two-way, a part is delivered to user's confession by supplying user's fresh water pipeline 11
To side, another part, which send to cooling tower 10 to feed, uses water in factory, high temperature concentrated seawater is delivered to Zhi Lv factory.
Zhi Lv factory is above consistent with desalination plant in grouping, that is, is also classified into two groups of A, B, and 13, A Zu Zhi chlorine factory is responsible for
Salt treatment is carried out to the high temperature concentrated seawater flowed out from six grades of desalination subsidiary factories 19 ~ 24 of A group desalination plant, 12, B Zu Zhi chlorine factory is negative
It blames and salt treatment is carried out to the high temperature concentrated seawater flowed out from six grades of desalination subsidiary factories 25 ~ 30 of B group desalination plant, Liang Zuzhi chlorine factory all will
Obtained high temperature brackish water is discharged into mixing pit 5 and by-product obtains industrial chlorine product.
Mixing pit 5 and open channel 4 are mainly used for mixing high/low temperature seawater and reduce ocean temperature using natural environment, i.e., from super
The low temperature seawater containing non-soluble impurity that filter factory 1 is discharged is mixed with the high temperature brackish water flowed out from Zhi Lv factory in mixing pit 5
Conjunction obtains medium temperature seawater, then the Temperature fall through long range open channel will flow back to sea with the seawater of salinity with natural sea-water equality of temperature
3。
On water-cycling mode, heat exchange method as shown in Figure 2 can accomplish 8 steam of steam turbine to nuclear power unit
The recycling of waste heat, seawater enter ultrafiltration plants 1 through water pump, and the seawater of the impurity containing non-solubility enters mixing pit 5 as waste liquid, low
The low temperature seawater of impurity content enters desalination plant, the fresh water one filtered after heat exchanger 6 is heated to the optimum temperature of reverse osmosis membrane
Part supply combined operating factory is personal, and another part is conveyed to city other users, and the concentrated seawater filtered enters the progress of Zhi Lv factory
Except salt treatment and obtain industrial chlorine product, by the seawater of Zhi Lv factory in salinity with the seawater in natural environment substantially
It is identical, it enters back into mixing pit 5 and is mixed with the low temperature waste liquid of ultrafiltration plants 1, the Temperature fall through long range open channel 4 reaches and natural ring
Border is plunged into the commercial sea the identical temperature of water, is finally drained back into nature seawater, ensure that greatest extent combined adjusting peak system will not to from
Right environment impacts.
As shown in Figure 1, the nuclear power peak regulation system corresponding peak regulating method provided in this embodiment based on desalination technology,
It is the scheme constructs based on two groups of joint desalination plants provided in this embodiment, specifically includes the following steps:
Step S1: real-time monitoring electric system power load simultaneously provides the load fluctuation situation in 15 minute unit time；
Step S2: judge that the power load under present case is in which of load fluctuation in period and provides corresponding place therewith
Reason, wherein load fluctuation period includes the load rising stage, and the load stage of stable development and load decline three kinds of periods of phase, rise if load
Phase then goes to step S31, then goes to step S32 if the load stage of stable development, then goes to step S33 if the load decline phase；
It judges the method that the power load under present case is in which period of load fluctuation, is carried out by following criterion
(1)
In formula,pRepresent the power load of electric system, subscripttRepresent the currently monitored period, upper tableiniWithendIt respectively represents
The initial time in the period and terminal moment.
Step S31: if power load is in load rising stage, the operation of nuclear power unit power per liter, and root under present case
Maintenance situation according to two groups of joint desalination plant the last times is judged, if first group of joint desalination plant is to overhaul the last time
Joint desalination plant, then sequentially stopped transport and overhauled step by step by six grades of units in second group of joint desalination plant, first group of connection
It closes desalination plant and remains operational state；If second group of joint desalination plant is the last joint desalination plant overhauled, first group
Six grades of units in joint desalination plant are sequentially stopped transport and are overhauled step by step, and second group of joint desalination plant remains operational state；
Step S32: if power load is in the load stage of stable development under present case, each of nuclear power unit and joint desalination plant is kept
Unit output is constant；
Step S33: if power load is in the load decline phase under present case, nuclear power unit downrating, and will be
The one group of joint desalination plant unit overhauled of stopping transport sequentially puts into production step by step.
Step S4: terminating the processing of current period, and return step S1 enters next monitoring cycle.
As shown in figure 3, nuclear power unit generator 33 is externally defeated through main transformer 31 in terms of the electrical connection of the present embodiment
Out, the built-in system of combined adjusting peak is connected through station-service step-down transformer 32.Station-service step-down transformer 32 be depressured after export respectively to
One section 312 of 6.6KV high-voltage auxiliary bus, A group joint desalination station-service 6.6KV high voltage bus 313,6.6KV high-voltage auxiliary bus two
Section 317, three section 318 of 6.6KV high-voltage auxiliary bus, B group joint desalination station-service 6.6KV high voltage bus 322,6.6KV high-voltage Auxiliary
Four section 323 of bus.
Wherein pass through 34 reduced output voltage of 380V low-voltage bus bar for one section 312 of 6.6KV high-voltage auxiliary bus；A group joint desalination plant
With 6.6KV high voltage bus 313 by 35 reduced output voltage of 380V low-voltage bus bar, and to six level work unit 314 of A group joint desalination plant
Power supply；Two section 317 of 6.6KV high-voltage auxiliary bus passes through 36 reduced output voltage of 380V low-voltage bus bar, and provides No. 2 unit connecting lines
321, while one section 316 of 6.6KV high pressure auxiliary bus-bar being provided, one section 316 of the 6.6KV high pressure auxiliary bus-bar is female by 380V low pressure
Line 310 exports, and powers to the first emergency diesel dynamo 315；Three section 318 of 6.6KV high-voltage auxiliary bus passes through 380V low pressure
37 reduced output voltage of bus, and external power grid connecting line 320 is provided through external power grid step-down transformer 319, while providing 6.6KV high voltage standby
With two section 326 of bus, two section 326 of the 6.6KV high pressure auxiliary bus-bar is exported by 380V low-voltage bus bar 311, and is met an urgent need to second
Diesel-driven generator 325 is powered；B group joint desalination station-service 6.6KV high voltage bus 322 passes through 38 reduced output voltage of 380V low-voltage bus bar,
And it powers to six level work unit 324 of B group joint desalination plant；Four section 323 of 6.6KV high-voltage auxiliary bus female by 380V low pressure
39 reduced output voltage of line.
By taking AP1000 compacted clay liners arrange in pairs or groups 3,000,000 m3/d reverse osmosis seawater desalting factory combined operatings as an example, nuclear power
Unit runs rated power as 1250MWe, and the station-service electrical power of nuclear power unit conventional island and nuclear island is about 80MW, and single group joint is light
Changing ultrafiltration plants and the general power of reverse osmosis seawater desalting factory in factory is about 120MW, and two groups of joint desalination plant general powers of A, B are about
240MW；Out of service in one group of joint desalination plant of load boom period, nuclear power unit is about to external grid transmission power
1050MW, all puts into operation in the desalination plant load valley Qi Liangzu, and nuclear power unit is about to external grid transmission power
650MW, and drop power and run to 970MW, that is, power is dropped to 77.6%FP, much higher than " 12-3-6-3 " daily load general at present
The lowest power for dropping power to 50%FP in tracking mode, final daily load aircraft pursuit course are as shown in Figure 4, it is seen that the present embodiment
System and method can largely improve nuclear power unit operation safety and economy.
This patent is not limited to above-mentioned preferred forms, anyone can obtain other each under the enlightenment of this patent
The nuclear power peak regulation system and method based on desalination technology of kind form, all equalizations done according to scope of the present invention patent
Variation and modification, should all belong to the covering scope of this patent.
Claims (5)
1. a kind of nuclear power peak regulation system based on desalination technology characterized by comprising be divided into the A group and B of concurrent working
Group multiple desalination plants and be divided into the A group of concurrent working and multiple Zhi Lv factories of B group, between each group of each desalination plant
For concurrent working；The Zhi Lv factory of desalination plant's connection A group of A group, forms first group of joint desalination plant；The desalination plant of B group connects B group
Zhi Lv factory, form second group of joint desalination plant；The desalination plant and Zhi Lv factory are powered by nuclear power unit, each desalination plant
It is independently-powered.
2. the nuclear power peak regulation system according to claim 1 based on desalination technology, it is characterised in that: the desalination plant
There are 12, A group desalination plant is divided into six grades of desalination plants, and B group desalination plant is divided into six grades of desalination plants.
3. the nuclear power peak regulation system according to claim 1 based on desalination technology characterized by comprising ultrafiltration
Factory, heat exchanger, desalination plant, Zhi Lv factory, mixing pit and cooling tower；The ultrafiltration plants extract the low temperature seawater under natural environment and remove
Non- soluble impurity is gone, and exports waste liquid and the low temperature seawater without containing non-soluble impurity, wherein waste liquid is delivered to mixing pit, is free of
There is the low temperature seawater of non-soluble impurity to be delivered to heat exchanger；The heat exchanger includes cold water-changing tube and hot water-changing tube, and the heat is changed
The both ends of water pipe are separately connected the steam turbine and cooling tower of nuclear power unit, and the both ends of the cold water-changing tube are separately connected ultrafiltration plants
The desalination plant and；Desalination plant's output fresh water and high temperature concentrated seawater, wherein fresh water is delivered to user side and cooling tower, high temperature respectively
Concentrated seawater is delivered to Zhi Lv factory；The high temperature brackish water that the Zhi Lv factory production obtains, which is discharged into, is delivered to mixing pit；The mixing pit
Sea is connected through open channel.
4. a kind of peak regulation side of -3 any nuclear power peak regulation systems based on desalination technology according to claim 1
Method, which comprises the following steps:
Step S1: real-time monitoring electric system power load simultaneously provides the load fluctuation situation in period of unit time；
Step S2: judge that current power load is in which of load fluctuation in period, and take corresponding control measure, wherein bearing
The period of lotus fluctuation includes: load rising stage, the load stage of stable development and load decline phase；Step is then gone to if the load rising stage
S31 then goes to step S32 if the load stage of stable development, then goes to step S33 if the load decline phase；
Step S3: according to the period of load fluctuation, corresponding control measure are taken, comprising:
Step S31: if current power load is in the load rising stage, nuclear power unit power per liter is run, and according to two groups of joints
The maintenance situation of desalination plant's the last time is judged, if first group of joint desalination plant is the last joint desalination overhauled
Factory is then sequentially stopped transport and is overhauled one by one by each desalination plant in second group of joint desalination plant, first group of joint desalination plant
Remain operational state；If second group of joint desalination plant is the last joint desalination plant overhauled, first group of joint desalination
Each desalination plant in factory sequentially stops transport and is overhauled step by step, and second group of joint desalination plant remains operational state；
Step S32: if current power load is in the load stage of stable development, each machine of nuclear power unit and two groups of joint desalination plants is kept
Group power output is constant；
Step S33: if current power load is in load decline phase, nuclear power unit downrating, and it will be in and stop transport
It sequentially puts into production step by step one group of joint desalination plant of inspecting state；
Step S4: return step S1 enters the monitoring of next cycle.
5. the peak regulating method of the nuclear power peak regulation system according to claim 4 based on desalination technology, it is characterised in that:
Judge that current power load is in which of load fluctuation in period and passes through following criterion in step s 2:(1)
In (1) formula,pRepresent the power load of electric system, subscripttRepresent the currently monitored period, subscriptiniWithendPoint
Initial time and the terminal moment in the period are not represented.
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