CN105589331B - Energy management method of wind-solar-pumping and storage-desalination combined system - Google Patents
Energy management method of wind-solar-pumping and storage-desalination combined system Download PDFInfo
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Abstract
The invention discloses an energy management method of a wind-solar-pumping and storage-desalination combined system. The wind-solar-pumping and storage-desalination combined system comprises four portions: a wind power generation portion, a photovoltaic generation portion, a pumping and energy storage power station, and a desalination system. The energy management method includes: the surplus power is determined based on factors such as the conventional load, the desalination unit load, the water demand quantity, and the output of renewable energy etc., whether a pumping and energy storage unit satisfies the operation condition is determined according to the surplus power, and if the pumping and energy storage unit satisfies the operation condition, the operation condition is further determined. According to the method, the randomness and non-uniformity of wind power generation and photovoltaic generation can be effectively made up, the dependence on the conventional energy modes such as a diesel engine etc. can be overcome, the method is applicable to islands and remote regions, and an effective approach can be provided for problems of energy usage and water usage of the islands and the remote regions.
Description
Technical field
The present invention relates to renewable energy comprehensive utilizes system capacity management domain, more particularly to a kind of wind-light-take out
Storage-desalinization hybrid system energy management method.
Background technology
Environmental pollution and energy scarcity are human survival two hang-ups urgently to be resolved hurrily.In the carbon emission reduction pressure of global warming
Under the crisis unsustainable with fossil energy, regenerative resource of the countries in the world with wind energy, solar energy as representative is developed
Paces are increasingly accelerated.With the continuous improvement of renewable new energy generating accounting, stable electric generation goes out fluctuation, strengthens adjustable
Property, improve electrical network digestion capability etc. and face huge challenge.
The key problem of renewable energy system is the equilibrium problem for solving generated output and load.Energy storage technology is
The key technology that regenerative resource large-scale develops and utilizes bottleneck is eliminated, wind-powered electricity generation, the unpredictability of photovoltaic light-emitting electricity can be made up,
Efficiency of energy utilization is improved, improves the electrical network quality of power supply.
Water-storage is the most ripe extensive energy storage technology of currently the only business, can be good at playing peak load shifting
Effect.Because solar energy and wind energy have very strong complementarity on Annual distribution, the natural complementarity of scene can be effective
Reduce peak-valley difference, such that it is able to reduce the requirement to water-storage, the scale for making pump-storage generator is substantially reduced, reduce throwing
Money, preferably to adapt to the requirement in market.
The core demand on island is with energy, uses water.Renewable energy system is combined with desalinization, can be with effectively solving sea
The use energy on island, problem of water consumption.Meanwhile, desalinization is exerted oneself with good adaptability to renewable energy system, can be
The energy balance aspect of system undertakes important role.
Based on above-mentioned analysis, it is proposed that a kind of energy management method for wind-light-pumped storage-desalinization hybrid system,
Wind-power electricity generation, the randomness of photovoltaic generation, fluctuation sex chromosome mosaicism can effectively be overcome, can be the use for solving island and remote districts
Energy, problem of water consumption provide a kind of effective way.
The content of the invention
The technical problem to be solved is for defect involved in background technology, there is provided a kind of wind-light-
Pumped storage-desalinization hybrid system energy management method.
The present invention is employed the following technical solutions to solve above-mentioned technical problem：
A kind of wind-light-pumped storage-desalinization hybrid system energy management method, the compound system of wind-light-pumped storage-desalinization
System includes wind power generation part, photovoltaic generation part, hydroenergy storage station and seawater desalination system, wherein, hydroenergy storage station
Pump-storage generator comprising for generate electricity water turbine units and the water pump assembly for drawing water；
The management method includes step in detail below：
Step 1), air speed data is gathered in units of hourly average wind speed, gathered in units of hourly average intensity of illumination
Illumination resource data；
Step 2), according to air speed data, intensity of illumination data, blower fan quantity Nw, photovoltaic module quantity NpvCalculate wind-force
Power generation part, photovoltaic generation part are exerted oneself；
Step 3), determine the conventional load P in wind-light-pumped storage-desalinization hybrid systeml(t), i.e. t wind-light-
The basic production outside the unit load of seawater desalination system and household electricity load are removed in pumped storage-desalinization hybrid system,
In units of hourly average load；
Step 4), determine desalinization demand and desalinization unit operation quantity in seawater desalination system, calculate wind-
The dump power of light-pumped storage-desalinization hybrid system, and then water-storage in hydroenergy storage station is controlled according to dump power
Unit works.
As a kind of further side of optimization of wind-light-pumped storage-desalinization hybrid system energy management method of the invention
Case, the step 4) in, comprising the following steps that when current fresh water retention reservoir reservoir storage is sufficient：
Step 4.1) determine that current fresh water retention reservoir reservoir storage is sufficient according to below equation：
Sd(t-1)-Sd,min≥Qw(t)
Nd(t)=0
Wherein, Sd(t-1) it is t-1 hours end fresh water retention reservoir reservoir storage, Sd,minTo ensure emergency water fresh water retaining
The minimum reservoir storage in pond, Qw(t) be t hours island water demand amount, NdT () is that t desalinization unit runs number
Amount；
Step 4.2), do not start desalinization unit, Pd(t)=0, wherein, PdT () is t period seawater desalination system electricity consumptions
Load；
Step 4.3), the dump power of wind-light-pumped storage-desalinization hybrid system is calculated according to below equation：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Wherein, Δ P be dump power, Pw(t) be t period wind power generation part power outputs, PpvT () is t period photovoltaics
Power generation part power output, ηADFor photovoltaic DC-to-AC converter conversion efficiency；
Step 4.4), pump-storage generator work in hydroenergy storage station is controlled according to dump power：
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, draw water storage
Pump-storage generator does not run in energy power station；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, draw water storage
Pump-storage generator works in pump operating condition in energy power station, is drawn water using dump power, Pp(t)=Pw(t)+Ppv(t)ηAD-
Pl(t), PpT power that () is consumed by t pump operating condition；
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, draw water storage
Pump-storage generator works in hydraulic turbine condition in energy power station, is generated electricity, Pt(t)=Pl(t)-(Pw(t)+Ppv(t)ηAD), Pt
T () is exerted oneself for t hydraulic turbine condition.
As a kind of further side of optimization of wind-light-pumped storage-desalinization hybrid system energy management method of the invention
Case, the step 4) in, current fresh water retention reservoir reservoir storage is not enough, and under the premise of user's water demand is met, water-storage
Whole units open comprising the following steps that when cannot exceed the cistern upper limit in a hour in power station：
Step 4.a), determine that current fresh water retention reservoir reservoir storage is not enough according to below equation, and use water need user is met
Under the premise of asking, whole units are opened and cannot exceed the cistern upper limit in one hour in hydroenergy storage station：
Sd(t-1)-Sd,min＜ Qw(t)
Sd(t-1)+Nd(t)×Od-Qw(t)≤Sd,max
Pd,min(t)=Nd,min(t)×Pd0
Nd,max(t)=Nd
Pd,max(t)=Nd,max(t)×Pd0
Wherein, Sd(t-1) it is t-1 hours end fresh water retention reservoir reservoir storage, Sd,minTo ensure emergency water fresh water retaining
The minimum reservoir storage in pond, Sd,maxRetaining for fresh water retention reservoir is reached the standard grade, Qw(t) be t hours island water demand amount, Nd(t)
Quantity, O are run for t desalinization unitdFor separate unit desalinization unit aquifer yield per hour, Nd,minT () is that t is little
When openable desalinization unit numerical lower limits, Nd,maxT () is the openable desalinization unit transformation of t hours,
NdFor desalinization unit total quantity, Pd0For separate unit desalinization unit rated power, Pd,minT () is t hour desalinizations
Load power lower limit, Pd,maxT () is the t hour desalinization load power upper limits；
Step 4.b), the dump power of wind-light-pumped storage-desalinization hybrid system is calculated according to below equation：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Step 4.c), pump-storage generator work in hydroenergy storage station is controlled according to dump power：
Pw(t)+Ppv(t)ηAD-Pd,max(t)-Pl(t)≤ΔP≤Pw(t)+Ppv(t)ηAD-Pd,min(t)-Pl(t)
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, draw water storage
Pump-storage generator does not run in energy power station；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, draw water storage
Pump-storage generator works in pump operating condition in energy power station, is drawn water using dump power：
Pp(t)=Pw(t)+Ppv(t)ηAD-(Pl(t)+Pd(t))
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PpT power that () is consumed by t pump operating condition；
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, draw water storage
Pump-storage generator works in hydraulic turbine condition in energy power station, is generated electricity：
Pt(t)=Pl(t)+Pd(t)-(Pw(t)+Ppv(t)ηAD)
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PtT () is exerted oneself for t hydraulic turbine condition.
As a kind of further side of optimization of wind-light-pumped storage-desalinization hybrid system energy management method of the invention
Case, the step 4) in, current fresh water retention reservoir reservoir storage is relatively low, and under the premise of user's water demand is met, water-storage
Whole units open comprising the following steps that when must exceed the cistern upper limit in a hour in power station：
Step 4.A), determine that current fresh water retention reservoir reservoir storage is relatively low according to below equation, and use water need user is met
Under the premise of asking, whole units are opened and must exceed the cistern upper limit in one hour in hydroenergy storage station：
Sd(t-1)+Nd(t)×Od-Qw(t)≥Sd,max
Pd,max(t)=Nd,max(t)×Pd0
Pd,min(t)=Nd,min(t)×Pd0
Wherein, Sd(t-1) it is t-1 hours end fresh water retention reservoir reservoir storage, Sd,minTo ensure emergency water fresh water retaining
The minimum reservoir storage in pond, Sd,maxRetaining for fresh water retention reservoir is reached the standard grade, Qw(t) be t hours island water demand amount, Nd(t)
Quantity, O are run for t desalinization unitdFor separate unit desalinization unit aquifer yield per hour, Nd,minT () is that t is little
When openable desalinization unit numerical lower limits, Nd,maxT () is the openable desalinization unit transformation of t hours；
NdFor desalinization unit total quantity, Pd0For separate unit desalinization unit rated power, Pd,minT () is t hour desalinizations
Load power lower limit, Pd,maxT () is the t hour desalinization load power upper limits；
Step 4.B), the dump power of wind-light-pumped storage-desalinization hybrid system is calculated according to below equation：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Step 4.C), pump-storage generator work in hydroenergy storage station is controlled according to dump power：
Pw(t)+Ppv(t)ηAD-Pd,max(t)-Pl(t)≤ΔP≤Pw(t)+Ppv(t)ηAD-Pd,min(t)-Pl(t)
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, draw water storage
Pump-storage generator does not run in energy power station；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, draw water storage
Pump-storage generator works in pump operating condition in energy power station, is drawn water using dump power:
Pp(t)=Pw(t)+Ppv(t)ηAD-(Pl(t)+Pd(t))
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PpT power that () is consumed by t pump operating condition；
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, draw water storage
Water-storage in energy power station works in hydraulic turbine condition, is generated electricity:
Pt(t)=Pl(t)+Pd(t)-(Pw(t)+Ppv(t)ηAD)
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PtT () is exerted oneself for t hydraulic turbine condition.
As a kind of further side of optimization of wind-light-pumped storage-desalinization hybrid system energy management method of the invention
Case, the step 4) in, described wind power generation part, photovoltaic generation part is exerted oneself can not meet conventional load and desalinization
Base load, water-storage works in hydraulic turbine condition and is generated electricity, and hydraulic turbine condition is exerted oneself when still can not meet load breach,
Then hydraulic turbine condition is exerted oneself as the EIAJ under its prevailing condition.
The present invention adopts above technical scheme compared with prior art, with following technique effect：
1. wind-power electricity generation, the randomness of photovoltaic generation, fluctuation are overcome.At present most of renewable energy systems are using storage
Battery is used as energy storage device.But the life of storage battery is short, high cost, have pollution and can not store in a large number.Hydroenergy storage station can
Mass storage electric energy, and start rapid, flexible operation reliability, can effectively make up the randomness of wind-power electricity generation and photovoltaic generation with
Inhomogeneities.
2. seawater desalination system participates in adjusting, and can realize what desalinization load and renewable energy power generation unit were exerted oneself
Matching.Limited according to user's water demand, fresh water retention reservoir capacity, desalinization unit quantity, when honourable aboundresources, to the greatest extent
Exerted oneself with maximizing consumption renewable energy system possibly also with desalinization unit；When wind, light resources are relatively deficient, according to
User's water demand, it is preferential to meet the basic water demand of user using the water yield stored in fresh water retention reservoir, reduce as far as possible
Desalinization unit starts quantity, is matched with user power utilization, water demand with realizing that system is exerted oneself.
3. the dependence to the traditional energy mode such as diesel engine can be overcome, it is adaptable to island and remote districts, be island and
Use energy, the problem of water consumption of remote districts provides a kind of effective way.
Description of the drawings
Fig. 1 is the wind-light-pumped storage-desalinization hybrid system structural representation of the present invention；
Fig. 2 is the desalinization unit operation reserve flow chart of the present invention；
Fig. 3 is the wind-light-pumped storage-desalinization hybrid system energy exchange strategic process figure of the present invention.
Specific embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
The invention discloses a kind of wind-light-pumped storage-desalinization hybrid system energy management method.
As shown in figure 1, wind-light-pumped storage-desalinization hybrid system includes wind power generation part, photovoltaic generation part, takes out
Water storage station and seawater desalination system, wherein, hydroenergy storage station is comprising for the water turbine units for generating electricity and for drawing water
Water pump assembly.
Management method of the present invention includes step in detail below：
Step 1), air speed data is gathered in units of hourly average wind speed, gathered in units of hourly average intensity of illumination
Illumination resource data；
Step 2), according to air speed data, intensity of illumination data, blower fan quantity Nw, photovoltaic module quantity NpvCalculate wind-force
Power generation part, photovoltaic generation part are exerted oneself；
Step 3), determine the conventional load P in wind-light-pumped storage-desalinization hybrid systeml(t), i.e. t wind-light-
The basic production outside the unit load of seawater desalination system and household electricity load are removed in pumped storage-desalinization hybrid system,
In units of hourly average load；
Step 4), determine desalinization demand and desalinization unit operation quantity in seawater desalination system, calculate wind-
The dump power of light-pumped storage-desalinization hybrid system, and then water-storage in hydroenergy storage station is controlled according to dump power
Unit works.
Desalinization unit operation quantity by user's fresh water demand, the current reservoir storage of seawater desalination system fresh water retention reservoir,
The impact of the factors such as fresh water retention reservoir total capacity.Can determine that desalinization unit runs the adjustable model of quantity according to these factors
Enclose, so that it is determined that the bound of power consumption required for unit interval maritime interior waters desalination unit operation, then in conjunction with renewable
Exert oneself size, conventional load size of the energy further determines that dump power, finally judges water-storage according to dump power size
The running status and its operating mode of unit.
As shown in Figures 2 and 3, step 4) concrete point of following three kinds of situations：
The first situation：During current reservoir storage abundance, i.e.,
Sd(t-1)-Sd,min≥Qw(t)
Nd(t)=0
Desalinization unit need not be started
Pd(t)=0
Wherein：Sd(t-1) it is t-1 hours end fresh water retention reservoir reservoir storage；Sd,minTo ensure emergency water fresh water retaining
The minimum reservoir storage in pond；QwT () is t hours island water demand amount；NdT () is that t desalinization unit runs number
Amount；
PdT () is t period seawater desalination system power loads.
Wind-light-pumped storage-desalinization hybrid system energy balance relations：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Wherein：Δ P is dump power；PwT () is t period wind power generation part power outputs；PpvT () is t period photovoltaics
Power generation part power output；ηADFor photovoltaic DC-to-AC converter conversion efficiency.
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, draw water storage
Energy unit does not run；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, draw water storage
Energy unit works in pump operating condition, is drawn water using dump power, has
Pp(t)=Pw(t)+Ppv(t)ηAD-Pl(t)
Wherein：PpT power that () is consumed by t pump operating condition.
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, draw water storage
Energy unit works in hydraulic turbine condition, is generated electricity (assume that hydraulic turbine condition is exerted oneself sufficiently large), has
Pt(t)=Pl(t)-(Pw(t)+Ppv(t)ηAD)
Wherein：PtT () is exerted oneself for t hydraulic turbine condition.
Second situation：Current reservoir storage is not enough, and under the premise of user's water demand is met, whole units are opened,
When cannot exceed the cistern upper limit in one hour, i.e.,
Sd(t-1)-Sd,min＜ Qw(t)
Sd(t-1)+Nd(t)×Od-Qw(t)≤Sd,max
Pd,min(t)=Nd,min(t)×Pd0
Nd,max(t)=Nd
Pd,max(t)=Nd,max(t)×Pd0
Wherein：Sd,maxFor seawater desalination system fresh water retention reservoir maximum water-storage；OdIt is that separate unit desalinization unit is every little
When aquifer yield；Nd,minT () is the openable desalinization unit numerical lower limits of t hours；Nd,maxT () can open for t hours
Desalinization unit transformation；NdFor desalinization unit total quantity；Pd0For separate unit desalinization unit rated power；
Pd,minT () is t hour desalinization load power lower limits；Pd,maxT () is the t hour desalinization load power upper limits.
According to wind-light-pumped storage-desalinization hybrid system energy balance relations：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Have：Pw(t)+Ppv(t)ηAD-Pd,max(t)-Pl(t)≤ΔP≤Pw(t)+Ppv(t)ηAD-Pd,min(t)-Pl(t)
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, draw water storage
Energy unit does not run；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, draw water storage
Energy unit works in pump operating condition, is drawn water using dump power, has
Pp(t)=Pw(t)+Ppv(t)ηAD-(Pl(t)+Pd(t))
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein：PpT power that () is consumed by t pump operating condition.
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, draw water storage
Energy unit works in hydraulic turbine condition, is generated electricity (assume that hydraulic turbine condition is exerted oneself sufficiently large), has
Pt(t)=Pl(t)+Pd(t)-(Pw(t)+Ppv(t)ηAD)
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein：PtT () is exerted oneself for t hydraulic turbine condition.
The third situation：When reservoir storage is relatively low, and under the premise of user's water demand is met, whole units are opened, one
When must exceed the cistern upper limit in hour, i.e.,
Sd(t-1)+Nd(t)×Od-Qw(t)≥Sd,max
Pd,max(t)=Nd,max(t)×Pd0
Pd,min(t)=Nd,min(t)×Pd0
According to wind-light-pumped storage-desalinization hybrid system energy balance relations：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Have：Pw(t)+Ppv(t)ηAD-Pd,max(t)-Pl(t)≤ΔP≤Pw(t)+Ppv(t)ηAD-Pd,min(t)-Pl(t)
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, draw water storage
Energy unit does not run；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, draw water storage
Energy unit works in pump operating condition, is drawn water using dump power, has
Pp(t)=Pw(t)+Ppv(t)ηAD-(Pl(t)+Pd(t))
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein：PpT power that () is consumed by t pump operating condition.
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, draw water storage
Hydraulic turbine condition can be worked in, is generated electricity (assume that hydraulic turbine condition is exerted oneself sufficiently large), be had
Pt(t)=Pl(t)+Pd(t)-(Pw(t)+Ppv(t)ηAD)
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein：PtT () is exerted oneself for t hydraulic turbine condition.
Described seawater desalination system participates in renewable energy system energy management effect and is embodied in：Water need are used according to user
Ask, fresh water retention reservoir capacity, desalinization unit quantity are limited, when wind, light resources are abundant, as far as possible using desalinator for seawater
Group is exerted oneself with maximizing consumption renewable energy system；When wind, light resources are relatively deficient, according to user's water demand, preferentially
Meet user's primary demand using the water yield stored in fresh water retention reservoir, desalinization unit reduced as far as possible and starts quantity,
Matched with user power utilization, water demand with realizing that system is exerted oneself.
Described wind, light power generating system is exerted oneself can not meet conventional load and desalinization base load, water-storage work
Make in hydraulic turbine condition, generated electricity, if hydraulic turbine condition is exerted oneself when still can not meet load breach, hydraulic turbine condition goes out
Power is the EIAJ under its prevailing condition.
It is understood that unless otherwise defined, all terms used herein are (including skill for those skilled in the art of the present technique
Art term and scientific terminology) have with art of the present invention in those of ordinary skill general understanding identical meaning.Also
It should be understood that those terms defined in such as general dictionary should be understood that with the context of prior art in
The consistent meaning of meaning, and unless defined as here, will not be explained with idealization or excessively formal implication.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to this
Bright, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. should be included in the present invention
Protection domain within.
Claims (2)
1. a kind of wind-light-pumped storage-desalinization hybrid system energy management method, the wind-light-pumped storage-desalinization is combined
System includes wind power generation part, photovoltaic generation part, hydroenergy storage station and seawater desalination system, wherein, water-storage electricity
The pump-storage generator stood includes the water turbine units and the water pump assembly for drawing water for generating electricity；
It is characterized in that, the management method includes step in detail below：
Step 1), air speed data is gathered in units of hourly average wind speed, gather illumination in units of hourly average intensity of illumination
Resource data；
Step 2), according to air speed data, intensity of illumination data, blower fan quantity Nw, photovoltaic module quantity NpvCalculate wind-power electricity generation
Partly, photovoltaic generation part is exerted oneself；
Step 3), determine the conventional load P in wind-light-pumped storage-desalinization hybrid systeml(t), i.e. t wind-light-pumped storage-
The basic production outside the unit load of seawater desalination system and household electricity load are removed in desalinization hybrid system, with hour
Average load is unit；
Step 4), determine desalinization demand and desalinization unit operation quantity, calculating wind-light-take out in seawater desalination system
The dump power of storage-desalinization hybrid system, and then pump-storage generator in hydroenergy storage station is controlled according to dump power
Work；
The step 4) in, comprising the following steps that when current fresh water retention reservoir reservoir storage is sufficient：
Step 4.1) determine that current fresh water retention reservoir reservoir storage is sufficient according to below equation：
Sd(t-1)-Sd,min≥Qw(t)
Nd(t)=0
Wherein, Sd(t-1) it is t-1 hours end fresh water retention reservoir reservoir storage, Sd,minTo ensure emergency water fresh water retention reservoir
Minimum reservoir storage, Qw(t) be t hours island water demand amount, NdT () is that t desalinization unit runs quantity；
Step 4.2), do not start desalinization unit, Pd(t)=0, wherein, PdT () is negative for the electricity consumption of t period seawater desalination systems
Lotus；
Step 4.3), the dump power of wind-light-pumped storage-desalinization hybrid system is calculated according to below equation：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Wherein, Δ P be dump power, Pw(t) be t period wind power generation part power outputs, PpvT () is t period photovoltaic generations
Part power output, ηADFor photovoltaic DC-to-AC converter conversion efficiency；
Step 4.4), pump-storage generator work in hydroenergy storage station is controlled according to dump power：
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, water-storage electricity
Pump-storage generator does not run in standing；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, water-storage electricity
Pump-storage generator works in pump operating condition in standing, and is drawn water using dump power, Pp(t)=Pw(t)+Ppv(t)ηAD-Pl
(t), PpT power that () is consumed by t pump operating condition；
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, water-storage electricity
Pump-storage generator works in hydraulic turbine condition in standing, and is generated electricity, Pt(t)=Pl(t)-(Pw(t)+Ppv(t)ηAD), PtT () is
T hydraulic turbine condition is exerted oneself；
The step 4) in, current fresh water retention reservoir reservoir storage is not enough, and under the premise of user's water demand is met, water-storage
Whole units open comprising the following steps that when cannot exceed the cistern upper limit in a hour in power station：
Step 4.a), determine that current fresh water retention reservoir reservoir storage is not enough according to below equation, and before user's water demand is met
Put, whole units are opened and cannot exceed the cistern upper limit in one hour in hydroenergy storage station：
Sd(t-1)-Sd,min＜ Qw(t)
Sd(t-1)+Nd(t)×Od-Qw(t)≤Sd,max
Pd,min(t)=Nd,min(t)×Pd0
Nd,max(t)=Nd
Pd,max(t)=Nd,max(t)×Pd0
Wherein, Sd(t-1) it is t-1 hours end fresh water retention reservoir reservoir storage, Sd,minTo ensure emergency water fresh water retention reservoir
Minimum reservoir storage, Sd,maxRetaining for fresh water retention reservoir is reached the standard grade, Qw(t) be t hours island water demand amount, NdT () is t
Moment desalinization unit runs quantity, OdFor separate unit desalinization unit aquifer yield per hour, Nd,minT () can for t hours
The desalinization unit numerical lower limits of unlatching, Nd,max(t) be the openable desalinization unit transformation of t hours, NdFor
Desalinization unit total quantity, Pd0For separate unit desalinization unit rated power, Pd,minT () is t hour desalinization loads
Lower limit, Pd,maxT () is the t hour desalinization load power upper limits；
Step 4.b), the dump power of wind-light-pumped storage-desalinization hybrid system is calculated according to below equation：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Step 4.c), pump-storage generator work in hydroenergy storage station is controlled according to dump power：
Pw(t)+Ppv(t)ηAD-Pd,max(t)-Pl(t)≤ΔP≤Pw(t)+Ppv(t)ηAD-Pd,min(t)-Pl(t)
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, water-storage electricity
Pump-storage generator does not run in standing；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, water-storage electricity
Pump-storage generator works in pump operating condition in standing, and is drawn water using dump power：
Pp(t)=Pw(t)+Ppv(t)ηAD-(Pl(t)+Pd(t))
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PpT power that () is consumed by t pump operating condition；
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, water-storage electricity
Pump-storage generator works in hydraulic turbine condition in standing, and is generated electricity：
Pt(t)=Pl(t)+Pd(t)-(Pw(t)+Ppv(t)ηAD)
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PtT () is exerted oneself for t hydraulic turbine condition；
The step 4) in, current fresh water retention reservoir reservoir storage is relatively low, and under the premise of user's water demand is met, water-storage
Whole units open comprising the following steps that when must exceed the cistern upper limit in a hour in power station：
Step 4.A), determine that current fresh water retention reservoir reservoir storage is relatively low according to below equation, and before user's water demand is met
Put, whole units are opened and must exceed the cistern upper limit in one hour in hydroenergy storage station：
Sd(t-1)+Nd(t)×Od-Qw(t)≥Sd,max
Pd,max(t)=Nd,max(t)×Pd0
Pd,min(t)=Nd,min(t)×Pd0
Wherein, Sd(t-1) it is t-1 hours end fresh water retention reservoir reservoir storage, Sd,minTo ensure emergency water fresh water retention reservoir
Minimum reservoir storage, Sd,maxRetaining for fresh water retention reservoir is reached the standard grade, Qw(t) be t hours island water demand amount, NdT () is t
Moment desalinization unit runs quantity, OdFor separate unit desalinization unit aquifer yield per hour, Nd,minT () can for t hours
The desalinization unit numerical lower limits of unlatching, Nd,maxT () is the openable desalinization unit transformation of t hours；NdFor
Desalinization unit total quantity, Pd0For separate unit desalinization unit rated power, Pd,minT () is t hour desalinization loads
Lower limit, Pd,maxT () is the t hour desalinization load power upper limits；
Step 4.B), the dump power of wind-light-pumped storage-desalinization hybrid system is calculated according to below equation：
Δ P=Pw(t)+Ppv(t)ηAD-Pd(t)-Pl(t)
Step 4.C), pump-storage generator work in hydroenergy storage station is controlled according to dump power：
Pw(t)+Ppv(t)ηAD-Pd,max(t)-Pl(t)≤ΔP≤Pw(t)+Ppv(t)ηAD-Pd,min(t)-Pl(t)
As Δ P=0, i.e., when wind, light power generating system power output are equal to desalinization load and conventional load, water-storage electricity
Pump-storage generator does not run in standing；
As Δ P ＞ 0, i.e., when wind, light power generating system power output are more than desalinization load and conventional load, water-storage electricity
Pump-storage generator works in pump operating condition in standing, and is drawn water using dump power:
Pp(t)=Pw(t)+Ppv(t)ηAD-(Pl(t)+Pd(t))
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PpT power that () is consumed by t pump operating condition；
As Δ P ＜ 0, i.e., when wind, light power generating system power output are less than desalinization load and conventional load, water-storage electricity
Water-storage in standing works in hydraulic turbine condition, is generated electricity:
Pt(t)=Pl(t)+Pd(t)-(Pw(t)+Ppv(t)ηAD)
Pd,min(t)≤Pd(t)≤Pd,max(t)
Wherein PtT () is exerted oneself for t hydraulic turbine condition.
2. wind-light-pumped storage-desalinization hybrid system energy management method according to claim 1, it is characterised in that
The step 4) in, described wind power generation part, photovoltaic generation part is exerted oneself can not meet conventional load and desalinization base
This load, water-storage works in hydraulic turbine condition and is generated electricity, and hydraulic turbine condition is exerted oneself when still can not meet load breach, then
Hydraulic turbine condition is exerted oneself as the EIAJ under its prevailing condition.
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| CN105905968B (en) * | 2016-07-14 | 2022-08-23 | 上海骄英能源科技有限公司 | Energy-saving seawater desalination device with wind energy and light energy complementary power generation and control method |
| CN107337289A (en) * | 2017-07-07 | 2017-11-10 | 河海大学 | A kind of reverse osmosis desalination device for integrating wind energy luminous energy and seawater accumulation of energy |
| CN107162246A (en) * | 2017-07-07 | 2017-09-15 | 河海大学 | Small-sized island wind energy pumping accumulation of energy sea water desalinating unit |
| CN109867312A (en) * | 2017-12-05 | 2019-06-11 | 平高集团有限公司 | A kind of method and system carrying out sea water desalination using clean energy resource |
| ES2911242B2 (en) * | 2020-11-16 | 2022-09-27 | Univ Leon | SYSTEM FOR THE CONTROL OF WATER AND ENERGY RESOURCES IN DESALINATION PLANTS |
| CN115829302A (en) * | 2023-02-23 | 2023-03-21 | 国网天津市电力公司城西供电分公司 | Comprehensive energy system optimization method and device considering wind power consumption and readable medium |
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| CN102116244B (en) * | 2011-03-01 | 2012-07-25 | 河海大学 | Wind-light supplementary power generating energy storing device |
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| CN204022609U (en) * | 2013-12-13 | 2014-12-17 | 哈尔滨锅炉厂有限责任公司 | Renewable energy source associating hotting mask coupling sea water desaltination and salt making system |
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| CN107991913B (en) * | 2017-12-29 | 2020-06-02 | 海南绿色能源与环境工程技术研究院 | Control method and system for optimizing seawater desalination energy |
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