CN107038151A - The step Optimized Operation drawing drawing method and dispatching method controlled based on accumulation of energy - Google Patents
The step Optimized Operation drawing drawing method and dispatching method controlled based on accumulation of energy Download PDFInfo
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Abstract
The present invention relates to a kind of step Optimized Operation drawing drawing method controlled based on accumulation of energy, the method for drafting comprises the following steps：Determine step hydropower station generator operation rule；It is determined that the step accumulation of energy zone of reasonableness of material time node and corresponding step hydropower station water level combination in year；Calculate t month step natural water generating capacities；Long series or the step accumulation of energy value and t month step generated energy at the Typical Year t the end of month are obtained, while calculating t the end of month step hydropower station water level combinations and t month step maximum generation abilities；The long series of connection or step accumulation of energy graph in Typical Year step accumulation of energy result of calculation value formation year, will be used as the normal accumulation of energy area dispatching line of step by envelope curve as line, lower envelope curve is dispatched in the normal accumulation of energy area of step thereon.With reference to step hydropower station generator operation rule, rationally reflection step hydropower station accumulation of energy and step hydropower station gross generation relation, fully instruct step hydropower station generator operation mode.
Description
Technical field
The present invention relates to hydraulic and electric engineering industry step power station Optimized Operation field, and in particular to one kind is based on accumulation of energy control
Step power station Optimized Operation drawing drawing method and a kind of reservoir dispatching method.
Background technology
Graph of reservoir operation is to represent decision variable in reservoir operation (water level, exert oneself, letdown flow, output etc.) and state
Graph of a relation between variable (water level, accumulation of energy etc.), it is painted according to power station history hydrological data and reservoir comprehensive utilization task
One group of system has the state variable change procedure line of control meaning.The state with control meaning is included in graph of reservoir operation to become
Amount change graph and some regions divided by these graphs, and define tune when reservoir is in different conditions variable
Metric is then.There is scheduling graph, so that it may according to reservoir at a time state variable numerical values recited and its work in scheduling graph
Region, determines reservoir capacity adjustment mode.
At present, about single graph of reservoir operation formulation and its application study data are more, method is ripe, and in reservoir
Huge effect is played in scheduling, and (has larger regulation performance, reservoir on step reservoir particularly higher-dimension Cascade Reservoirs
The formulation and its application study that number is more than 2) scheduling graph are very few.It is preferable by multiple regulation performances with the cascade development in river
Reservoir composition, carry out unified management, United Dispatching multi-reservoir it is more and more.Therefore, it is highly desirable to carry out step reservoir
The formulation and application study of group's scheduling graph, the foundation of science is provided for the traffic control of Cascade Reservoirs.
Existing Cascade Reservoirs Optimized Operation figure research contents mainly has：Content 1：Thought based on Cascade Reservoirs combined dispatching
Think, it is considered to which hydraulic power is contacted between step reservoir, according to long series or Typical Year historical summary, choose more efficient method and build
Mould is solved, and draws each graph of reservoir operation of step；Content 2：Step accumulation of energy is chosen to weigh the overall performane of Cascade Reservoirs, according to length
Series or Typical Year historical summary, build step Optimized model and solve, draw and be based on step accumulation of energy and step gross capability function
The Cascade Reservoirs Optimized Operation figure of relation.
The problem of existing research contents is present：Although embodying the thought of step combined dispatching, end result in content 1
Remain as single storehouse scheduling graph, it is impossible to which the index of Cascade Reservoirs is weighed in displaying directly perceived；Cascade operation figure in content 2 gives ladder
Level accumulation of energy and the directive relationship of step gross capability, but the step that can not be reacted in the case of current step accumulation of energy answers generated energy, it is impossible to
Reference is given for the medium-term and long-term generator operation mode of step hydropower station.
The content of the invention
The present invention in order to solve it is existing can not be with step accumulation of energy and generated energy corresponding relation for reservoir dispatching figure
There is provided a kind of step Optimized Operation figure drafting side controlled based on accumulation of energy for the problem of intuitively instructing step power station management and running
In method, the step Optimized Operation figure, using accumulation of energy as ordinate, step accumulation of energy-electricity scheduling is formed by abscissa of calendar month
Figure, the method for drafting comprises the following steps：
Step 1：Determine step hydropower station generator operation rule；
Step 2：Power station characteristic and dispatching of power netwoks actual influence factor are considered, from abandoning water risk, peak regulation risk, electricity risk
Angle is analyzed, the reasonable model of step accumulation of energy at (such as beginning of the year, flood just, the flood withered alternately end of term) it is determined that material time node in year
Enclose and corresponding step hydropower station water level combination；
Step 3：It is first using long series or Typical Year step natural runoff data as foundation according to step accumulation of energy zone of reasonableness
Secondary calculating makes t=1, calculates t month step natural water generating capacities；
Step 4：Stored according to the step of the step hydropower station generator operation rule in step 1, the material time node in step 2
Step t month natural water generating capacities in energy zone of reasonableness, step 3, obtain long series or the step at the Typical Year t the end of month
Accumulation of energy value；
Step 5：T=t+1 is made, if t≤12 turn to step 3, if t ＞ 12, step 6 is turned to；
Step 6：The long series of connection or step accumulation of energy graph in Typical Year step accumulation of energy result of calculation value formation year, by it
Upper envelope curve is abided by as line, lower envelope curve is dispatched in the normal accumulation of energy area of step as the normal accumulation of energy area dispatching line of step, wherein flood season
Follow the principle for reducing under the premise of flood control safety is ensured and abandoning water risk, the period, normal accumulation of energy area needed specially treated, i.e., it is normal to store
The part that energy area dispatching line value is taken as between flood just step accumulation of energy zone of reasonableness lower limit, upper dispatching line is normal accumulation of energy
Area, normal accumulation of energy area area above is reduction accumulation of energy area, and region below is increase accumulation of energy area；Generated electricity according to the step in step 1
Operation rule, different zones are divided into by normal accumulation of energy area according to the time, wherein beginning of the year step accumulation of energy is equal to target accumulation of energy at the beginning of flood
It is balanced falling zone to balance out the period fallen, and the period that flood season step accumulation of energy passively goes up is passive rise area, and flood season Mo step stores
The period that can be adjusted according to water to year end target accumulation of energy is active accommodation area；In the step accumulation of energy-electricity scheduling graph acceptance of the bid
Outpour balanced falling zone, passively rise area, active accommodation area, normal accumulation of energy area, reduction accumulation of energy area, increase accumulation of energy area, most end form
Into step accumulation of energy-electricity Optimized Operation figure.
Further, the step 1 is specifically included：In general, Cascade Hydropower Stations on River Basin considers combined dispatching mode, the beginning of the year
Step accumulation of energy balances out to target accumulation of energy at the beginning of flood, and leading power station, which downstream discharges water, adjusts compensation；Flood season is ensuring flood control safety
Under the premise of reduce and abandon water risk, retaining is shut down in leading power station, and remaining power station of downstream is stored by the multiple full method of step natural water, step
Can passively it go up；Flood season Mo, leading power station, which downstream discharges water, adjusted compensation, and step hydropower station adjusts accumulation of energy according to water to year end
To year end target accumulation of energy.
Further, it is based on including the step of abandoning water risk control step hydropower station node accumulation of energy scope in the step 2：Adopt
Electricity consumption head of a station series or Typical Year Streamflow Data, consider power station characteristic, dispatching of power netwoks factor, determine that just different steps store flood
Can lower power station abandon water risk, and combine ensure safety in the case of completely send out multiple, the principle of reducing abandoned water, to provide flood just step stores
Can zone of reasonableness；
Further, the step of peak regulation risk control step hydropower station node accumulation of energy scope is based in the step 2 includes：Year
Just hydropower station water level progressively disappears first arrival flood with month, and at least disappears at the beginning of flood and fall on flood season limit level；At the beginning of the year, consider negative
Lotus demand, electric power generating composition, water power generating capacity Multiple factors, it is determined that under beginning of the year difference step accumulation of energy the withered phase peak regulation risk, and
Beginning of the year step accumulation of energy zone of reasonableness is provided with reference to the peak regulation control requirement of power network；
Further, the step of electricity risk control step hydropower station node accumulation of energy scope is based in the step 2 includes：Root
It is predicted that water situation establishment power station year generation schedule, it is determined that annual electricity target；At the beginning of the year, consider natural water,
The factor such as power station characteristic and the cooperation of other power supplys, it is determined that the electricity risk under beginning of the year difference step accumulation of energy, and combine step hydropower station
Electricity objectives of examination determines beginning of the year step accumulation of energy zone of reasonableness.
Further, specifically included in the step 3：
S31, by each power station characteristic of step, (t-1) the end of month step hydropower station water level combination (if t=1, the step as at the beginning of 1 month
Power station water level combination), calculate t monthly average water consumption rates；
S32, according to long series or Typical Year step natural runoff data, calculate t month step natural water generating capacities,
Calculation formula is
In formula, ENatural tFor t month step natural water generating capacities；ENatural i, tGenerated electricity for t month power stations i natural water
Ability；N is step hydropower station sum；Qi,tFor t month power stations i dam site natural water flow；ri,tFor being averaged for t month power station i
Water consumption rate；tsFor time, unit s.
Further, the step 4 is specifically included：According to the step generator operation rule in step 1, the pass in step 2
Step accumulation of energy zone of reasonableness, the long series in step 3 or the Typical Year step t month natural water generating energy of key timing node
Power, it then follows the conservation of energy, calculates t the end of month step accumulation of energys and t month step generated energy, while calculating t the end of month step hydropower stations
Water level combination and t month step maximum generation abilities, wherein t month step maximum generation abilities are used as t month step generated energy
The constraint upper limit, it is specific to calculate and method for drafting is as follows：
If S41, the t months are in year first arrival flood just (balanced falling zone)：Period step accumulation of energy change, which is followed, to be balanced out
Principle, i.e., should be equal per daily generation.According to beginning of the year step accumulation of energy X0With step accumulation of energy X at the beginning of floodT1, send out the step t months in period
Electricity ESend out t, t the end of month step accumulation of energys XtCalculation formula is as follows,
Xt=Xt-1+ENatural t-ESend out t
In formula, D1~T1For total number of days at the beginning of year first arrival flood；Emax,tFor t month step hydropower stations maximum generation ability；{}minFor
Take the smaller in the two.
If S42, the t months are in flood season (area of passively going up)：The period flood just step accumulation of energy XT1Calculated by S41, tap
Retaining is shut down in power station, and downstream stage power station generates electricity by full step natural water.Step t month generated energy ESend out tFor the moon full step
The smaller of natural water generating capacity and downstream stage power station maximum generation ability, t the end of month step accumulation of energys XtCan be as at the beginning of flood
Step accumulation of energy is calculated month by month, and calculation formula is as follows,
ESend out t={ ENatural t,EDetain dragon max, t}min
Xt=Xt-1+ENatural t-ESend out t
In formula, EDetain dragon max, tTo deduct the maximum generation ability in downstream stage power station outside leading power station the t months.
If S43, the t months are flood season Mo to year end (active accommodation area)：Step accumulation of energy is known as X at the end of the periodT, i.e. XT
=X0, flood season Mo step accumulation of energy XT2Calculated by S42；Flood season Mo, step hydropower station generated electricity by natural water to the flood withered alternately end of term；
At the flood withered alternately end of term to year end, step accumulation of energy equilibrium is adjusted to year end target accumulation of energy XT, step accumulation of energy variable quantity is consistent month by month；Order
The moon number at the flood withered alternately end of term to year end is T3, and such as flood withered alternately end of term is September end, then T3=3, and calculation formula is as follows,
Flood season Mo to the flood withered alternately end of term：ESend out t={ ENatural t,Emax,t}min
Xt=Xt-1+ENatural t-ESend out t
The flood withered alternately end of term to year end：
ESend out t={ Xt-1-Xt+ENatural t, Emax,t}min
Further, the step 6 is specifically included：The long series or Typical Year step that Connection Step 1- steps 5 are obtained store
Can result of calculation value, form step accumulation of energy graph in year, will thereon envelope curve as dispatching line, lower bag in the normal accumulation of energy area of step
Line follows the original for reducing under the premise of flood control safety is ensured and abandoning water risk as the normal accumulation of energy area dispatching line of step, wherein flood season
Then, normal accumulation of energy area needs specially treated the period, i.e., normal accumulation of energy area dispatching line value is taken as the reasonable model of flood just step accumulation of energy
Enclose and more than lower limit, normal accumulation of energy area be labeled as reduction accumulation of energy area, increase accumulation of energy area is labeled as below, by normal accumulation of energy area per year
First arrival flood just, flood season, flood season Mo to year end be respectively labeled as balanced falling zone, passively rise area, active accommodation area.
Another aspect of the present invention additionally provides a kind of step water with any of the above-described step accumulation of energy-electricity Optimized Operation figure
Storehouse dispatching method, in the step accumulation of energy-electricity Optimized Operation figure, on longitudinal direction, scheduling graph, which is divided into, reduces accumulation of energy area, normal
Accumulation of energy area and increase accumulation of energy area；In transverse direction, normal accumulation of energy area is divided into balanced falling zone, passively rise area, active according to the time
Adjust area；The scheduling graph application method comprises the following steps：
When step accumulation of energy is located at normal accumulation of energy area, setting step hydropower station accumulation of energy at the beginning of year first arrival flood disappears towards target accumulation of energy value
Fall, step reservoir answers generated energy to include natural water generating capacity and accumulation of energy and normally disappear to fall part；The leading power station of flood season setting
Retaining is shut down, remaining power station of downstream generates electricity by full step natural water, and step accumulation of energy passively goes up；Flood season Mo to year end setting ladder
Level power station adjusts water level according to water to year end target accumulation of energy.
When step accumulation of energy is located at reduction accumulation of energy area, setting power station, which is increased, exerts oneself, and increase generated energy makes accumulation of energy return to normal storage
Can area；
When step accumulation of energy is located at increase accumulation of energy area, the reduction of setting power station is exerted oneself, and reducing generated energy makes accumulation of energy return to normal storage
Can area.
Technical scheme combination step hydropower station generator operation rule, rationally reflection step hydropower station accumulation of energy and step electricity
Gross generation of standing relation, fully instructs step hydropower station generator operation mode.
Brief description of the drawings
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematical without that should manage
Solve to carry out any limitation to the present invention, in the accompanying drawings：
Fig. 1 is shown for the flow of the step Optimized Operation drawing drawing method controlled based on accumulation of energy in some embodiments of the invention
It is intended to；
Fig. 2 is Cascade Stations on Wujiang River accumulation of energy-electricity Optimized Operation figure in some embodiments of the invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Embodiment one
The embodiments of the invention provide a kind of step Optimized Operation drawing drawing method controlled based on accumulation of energy, the step is excellent
Change in scheduling graph, using accumulation of energy as ordinate, step accumulation of energy-electricity scheduling graph is formed by abscissa of calendar month, as shown in figure 1,
The method for drafting comprises the following steps：
S110：Determine step hydropower station generator operation rule.Cascade Hydropower Stations on River Basin considers combined dispatching mode, and beginning of the year step stores
It can balance out to target accumulation of energy at the beginning of flood, leading power station, which downstream discharges water, adjusts compensation；Flood season is under the premise of flood control safety is ensured
Water risk is abandoned in reduction, and retaining is shut down in leading power station, and remaining power station of downstream is by the multiple full method of step natural water, and step accumulation of energy is passive
Go up；Flood season Mo, leading power station, which downstream discharges water, adjusted compensation, and step hydropower station adjusts accumulation of energy to year end according to water to year end
Target accumulation of energy.
S120：Power station characteristic and dispatching of power netwoks actual influence factor are considered, from abandoning water risk, peak regulation risk, electricity risk
Angle is analyzed, it is determined that the step accumulation of energy zone of reasonableness of material time node and corresponding step hydropower station water level combination in year.
Based on abandoning water risk control step hydropower station accumulation of energy scope, based on peak regulation risk control step hydropower station accumulation of energy scope, based on electricity wind
Danger control step hydropower station accumulation of energy scope；It is described to be based on including the step of abandoning water risk control step hydropower station accumulation of energy scope：Using electricity
Head of a station's series or Typical Year Streamflow Data, consider power station characteristic, dispatching of power netwoks factor, determine flood just under different step accumulation of energys
Abandon water risk, and combine ensure safety in the case of completely send out multiple, the principle of reducing abandoned water, provide the reasonable model of flood just step accumulation of energy
Enclose；It is described be based on peak regulation risk control step hydropower station accumulation of energy scope the step of include：The first hydropower station water level of year first arrival flood is with month
Progressively disappear, and at least disappear at the beginning of flood and fall on flood season limit level；At the beginning of the year, consider workload demand, electric power generating composition, water power and generate electricity
Ability Multiple factors, it is determined that under beginning of the year difference step accumulation of energy the withered phase peak regulation risk, and combine the peak regulation control requirement of power network and give
Go out beginning of the year step accumulation of energy zone of reasonableness；It is described be based on electricity risk control step hydropower station accumulation of energy scope the step of include：According to pre-
Water situation establishment power station year generation schedule is surveyed, it is determined that annual electricity target；At the beginning of the year, natural water, power station are considered
The factor such as characteristic and the cooperation of other power supplys, it is determined that the electricity risk under beginning of the year difference step accumulation of energy, and combine step hydropower station electricity
Objectives of examination determines beginning of the year step accumulation of energy zone of reasonableness.
S130：T month step natural waters generating capacity is calculated.According to step accumulation of energy zone of reasonableness, with long series or allusion quotation
Type year step natural runoff data is foundation, calculates make t=1 first, calculates t month step natural water generating capacities, including：
1. by each power station characteristic of step, (t-1) the end of month step hydropower station water level combination, (if t=1, step is electric as at the beginning of 1 month
Stand water level combination), calculate t monthly average water consumption rates；
2. according to long series or Typical Year step natural runoff data, t month step natural water generating capacities, meter are calculated
Calculating formula is
In formula, ENatural tFor t month step natural water generating capacities；ENatural i, tGenerated electricity for t month power stations i natural water
Ability；N is step hydropower station sum；Qi,tFor t month power stations i dam site natural water flow；ri,tFor being averaged for t month power station i
Water consumption rate；tsFor time, unit s.
S140：T the end of month step accumulation of energys and t month steps generated energy are calculated.Step hydropower station in S110, which generates electricity, transports
Step t month natural water generating energy in the step accumulation of energy zone of reasonableness of material time node in line discipline, S120, S130
Power, it then follows the conservation of energy, calculates t the end of month step accumulation of energys and t month step generated energy, while calculating t the end of month step hydropower stations
Water level combination and t month step maximum generation abilities, wherein t month step maximum generation abilities are used as t month step generated energy
The constraint upper limit, circular is as follows：
If being 1. in year first arrival flood the t months just (balanced falling zone)：Period step accumulation of energy change, which follows to balance out, falls original
Then, i.e., should be equal per daily generation.According to beginning of the year step accumulation of energy X0With step accumulation of energy X at the beginning of floodT1, generate electricity the step t months in period
Measure ESend out t, t the end of month step accumulation of energys XtCalculation formula is as follows,
Xt=Xt-1+ENatural t-ESend out t
In formula, D1~T1For total number of days at the beginning of year first arrival flood；Emax,tFor t month step hydropower stations maximum generation ability；{}minFor
Take the smaller in the two.
If 2. the t months are in flood season (area of passively going up)：The period flood just step accumulation of energy XT1By 1. calculating, leading power station
Retaining is shut down, downstream stage power station generates electricity by full step natural water.Step t month generated energy ESend out tIt is natural for the moon full step
The smaller of water generating capacity and downstream stage power station maximum generation ability, t the end of month step accumulation of energys XtCan as at the beginning of flood step
Accumulation of energy is calculated month by month, and calculation formula is as follows,
ESend out t={ ENatural t,EDetain dragon max, t}min
Xt=Xt-1+ENatural t-ESend out t
In formula, EDetain dragon max, tTo deduct the maximum generation ability in downstream stage power station outside leading power station the t months.
If 3. the t months are flood season Mo to year end (active accommodation area)：Step accumulation of energy is known as X at the end of the periodT, i.e. XT=
X0, flood season Mo step accumulation of energy XT2By 2. calculating；Flood season Mo, step hydropower station generated electricity by natural water to the flood withered alternately end of term；Flood
At the withered alternately end of term to year end, step accumulation of energy equilibrium is adjusted to year end target accumulation of energy XT, step accumulation of energy variable quantity is consistent month by month；Make flood
The moon number at the withered alternately end of term to year end is T3, and such as flood withered alternately end of term is September end, then T3=3, and calculation formula is as follows,
Flood season Mo to the flood withered alternately end of term：ESend out t={ ENatural t,Emax,t}min
Xt=Xt-1+ENatural t-ESend out t
The flood withered alternately end of term to year end：
ESend out t={ Xt-1-Xt+ENatural t, Emax,t}min
S150, t=t+1 is made, if t≤12 turn to step 3, if t ＞ 12, turn to step 6；
S160, the long series of connection or step accumulation of energy graph in Typical Year step accumulation of energy result of calculation value formation year, by it
Upper envelope curve is abided by as line, lower envelope curve is dispatched in the normal accumulation of energy area of step as the normal accumulation of energy area dispatching line of step, wherein flood season
Follow the principle for reducing under the premise of flood control safety is ensured and abandoning water risk, the period, normal accumulation of energy area needed specially treated, i.e., it is normal to store
The part that energy area dispatching line value is taken as between flood just step accumulation of energy zone of reasonableness lower limit, upper dispatching line is normal accumulation of energy
Area, normal accumulation of energy area area above is reduction accumulation of energy area, and region below is increase accumulation of energy area；Step in S110, which generates electricity, to be transported
Line discipline, different zones are divided into by normal accumulation of energy area according to the time, wherein beginning of the year step accumulation of energy is balanced to target accumulation of energy at the beginning of flood
The period fallen disappear for balanced falling zone, the period that flood season step accumulation of energy passively goes up is passive rise area, flood season Mo step accumulation of energy
The period adjusted according to water to year end target accumulation of energy is active accommodation area；Marked in the step accumulation of energy-electricity scheduling graph
Go out balanced falling zone, passively rise area, active accommodation area, normal accumulation of energy area, reduction accumulation of energy area, increase accumulation of energy area, ultimately form
Step accumulation of energy-electricity Optimized Operation figure.
The step Optimized Operation drawing drawing method controlled based on accumulation of energy of the present invention can rationally reflect step hydropower station accumulation of energy
With step hydropower station gross generation relation, step hydropower station generator operation mode is fully instructed.
The embodiment of the present invention additionally provides a kind of reservoir dispatching using above-mentioned step accumulation of energy-electricity Optimized Operation figure
Method, in the step accumulation of energy-electricity Optimized Operation figure, on longitudinal direction, scheduling graph is divided into reduction accumulation of energy area, normal accumulation of energy area
With increase accumulation of energy area；In transverse direction, normal accumulation of energy area is divided into balanced falling zone, passively rise area, active accommodation area according to the time；
The scheduling graph application method comprises the following steps：
When step accumulation of energy is located at normal accumulation of energy area, beginning of the year step hydropower station accumulation of energy balances out towards target accumulation of energy at the beginning of flood, ladder
Level reservoir answers generated energy to include natural water generating capacity and accumulation of energy and normally disappear to fall part；Retaining is shut down in flood season tap power station,
Remaining power station of downstream generates electricity by step natural water, and step accumulation of energy passively goes up；Flood season Mo to year end set step hydropower station according to
Water adjusts water level to year end target accumulation of energy.
When step accumulation of energy is located at reduction accumulation of energy area, setting power station, which is increased, exerts oneself, and increase generated energy makes accumulation of energy return to normal storage
Can area；
When step accumulation of energy is located at increase accumulation of energy area, the reduction of setting power station is exerted oneself, and reducing generated energy makes accumulation of energy return to normal storage
Can area.
Embodiment two
The embodiment of the present invention additionally provides a kind of step Optimized Operation drawing drawing method controlled based on accumulation of energy, specific steps
Comprise the following steps：
First, generator operation rule in step hydropower station is determined
In general, Cascade Hydropower Stations on River Basin considers combined dispatching mode, target, year first arrival flood are turned to benefits maximum
Just need to meet the requirements of comprehensive utilization such as diversion, irrigation, leading power station, which downstream discharges water, is adjusted compensation, and regulation performance is poor
Power station should ensure that sufficiently high water level operation, and step accumulation of energy balances out to target accumulation of energy at the beginning of flood；Flood just step hydropower station accumulation of energy disappears
Relatively low level in year is dropped down onto, water risk is abandoned in reduction of being tried one's best under the premise of flood control safety is ensured, now leading power station, which is shut down, stores
The multiple full hair of natural water is pressed in water, downstream stage power station, and the preferable power station of regulation performance should make full use of itself regulation storage capacity to exist
Later stage in flood season water conservation, it is ensured that enough compensation ability of withered phase；Leading power station downstream discharged water to adjust and mended to year end flood season Mo
Repay, downstream stage power station keeps higher level operation, and step hydropower station adjusts accumulation of energy to year end target accumulation of energy according to water.
2nd, the step accumulation of energy zone of reasonableness of key node and corresponding step hydropower station water level combination are determined
The influence factors such as power station characteristic and dispatching of power netwoks be actual are considered, from abandoning water risk, peak regulation risk, electricity risk
Angularly analysed in depth, the step hydropower station at (such as beginning of the year, flood just, the flood withered alternately end of term) it is determined that material time node in year
Reasonable accumulation of energy scope and corresponding step hydropower station water level combination, it is ensured that step hydropower station accumulation of energy within that range, which ensure that, fills
Divide power network safety operation and meet electricity power enterprise's evaluation requirement.
S21. based on the step hydropower station node accumulation of energy scope control for abandoning water risk control
Flood season power station natural water is concentrated, to make full use of water resource, and power network is generally given priority in arranging for hydropower station,
The more region of water power, part power station even undertakes base lotus, therefore, power station should be multiple full on the premise of ensuring safety
Hair, reducing abandoned water.Because flood season step accumulation of energy controls that directly influence will be produced on the water probability of abandoning in flood season, using power station length series
Or Typical Year Streamflow Data, consider many factors such as power station characteristic, dispatching of power netwoks, electricity under the just different step accumulation of energys of research flood
That stands abandons water risk, provides flood just step accumulation of energy zone of reasonableness, to instruct power station reasonable water level control, is ensureing power plant safety fortune
On the premise of row, the maximization of power generation in the flood seasons benefit is realized.
S22. the step hydropower station node accumulation of energy scope control based on peak regulation risk control
Just main function of the power station in power system is to provide Peak Load to year first arrival flood, ensures that the safety of power network is steady
Fixed operation, this stage hydropower station water level progressively should disappear, and necessary peak regulation power be provided for power network, while need at least disappear at the beginning of flood
Flood season limit level is fallen on to meet Flood, protection power station flood control safety.Because the period water is relatively fewer, beginning of the year water level is high
The low peak regulation power level that will directly affect period power station, considers workload demand, electric power generating composition, water power generating capacity etc.
The peak regulation control requirement of Multiple factors, the peak regulation risk under the different step accumulation of energys of the research beginning of the year, and combination power network provides beginning of the year ladder
Level accumulation of energy zone of reasonableness, to instruct power station rationally to disappear in the period, has both ensured self generating benefit, the peace of power network can be ensured again
Full stable operation.
S23. the step hydropower station node accumulation of energy scope control based on electricity risk control
From the perspective of annual management and running, power station must work out year generation schedule according to prediction water situation, really
Fixed year electricity target.On the one hand this target influences the benefit in power station, on the other hand also contributes to electricity in whole power network and supplies
With the balance of demand.Due to the uncertainty of water, and the various non-intellectuals for dispatching correlative factors in actual motion, power station is deposited
The risk that can not be completed in electricity target.In addition to natural water, beginning of the year power station accumulation of energy is protruded the influence for carrying out annual electricity generating capacity, comprehensive
Consider the factors such as natural water, power station characteristic, the electricity risk under the different step accumulation of energys of the research beginning of the year, and combine step hydropower station electricity
Amount objectives of examination provides beginning of the year step accumulation of energy zone of reasonableness, to instruct power station rationally to work out electricity plan, reply natural water
Uncertainty influence.
3rd, natural water generating capacity is calculated
According to step accumulation of energy zone of reasonableness, using long series or Typical Year step natural runoff data as foundation, calculate first
T=1 is made, t month step natural water generating capacities are calculated, including：
S31, by each power station characteristic of step, (t-1) the end of month step hydropower station water level combination (if t=1, the step as at the beginning of 1 month
Power station water level combination), calculate t monthly average water consumption rates；
S32, according to long series or Typical Year step natural runoff data, calculate t month step natural water generating capacities,
Calculation formula is
In formula, ENatural tFor t month step natural water generating capacities；ENatural i, tGenerated electricity for t month power stations i natural water
Ability；N is step hydropower station sum；Qi,tFor t month power stations i dam site natural water flow；ri,tFor being averaged for t month power station i
Water consumption rate；tsFor time, unit s.
4th, step stores energy value calculation
Step hydropower station generator operation rule in one, the step accumulation of energy zone of reasonableness of material time node in two,
Step t month natural water generating capacities in three, it then follows the conservation of energy, calculate t the end of month step accumulation of energys and t month steps hair
Electricity, while t the end of month step hydropower station water level combinations and t month step maximum generation abilities are calculated, wherein t month steps are maximum
Generating capacity is specifically included as the constraint upper limit of t month step generated energy：
If S41, the t months are in year first arrival flood just (balanced falling zone)：Period step accumulation of energy change, which is followed, to be balanced out
Principle, i.e., should be equal per daily generation.According to beginning of the year step accumulation of energy X0With step accumulation of energy X at the beginning of floodT1, send out the step t months in period
Electricity ESend out t, t the end of month step accumulation of energys XtCalculation formula is as follows,
Xt=Xt-1+ENatural t-ESend out t
In formula, D1~T1For total number of days at the beginning of year first arrival flood；Emax,tFor t month step hydropower stations maximum generation ability；{}minFor
Take the smaller in the two.
If S42, the t months are in flood season (area of passively going up)：The period flood just step accumulation of energy XT1Calculated by S41, step
Retaining is shut down in the leading power station of operation pattern of plant, and downstream stage power station generates electricity by full step natural water.The step t months generate electricity
Measure ESend out tFor the smaller of this month full step natural water generating capacity and downstream stage power station maximum generation ability, t the end of month ladder
Level accumulation of energy XtStep accumulation of energy can month by month it be calculated as at the beginning of flood, calculation formula is as follows,
ESend out t={ ENatural t,EDetain dragon max, t}min
Xt=Xt-1+ENatural t-ESend out t
In formula, EDetain dragon max, tTo deduct the maximum generation ability in downstream stage power station outside leading power station the t months.
If S43, the t months are flood season Mo to year end (active accommodation area)：Step accumulation of energy is known as X at the end of the periodT, i.e. XT
=X0, flood season Mo step accumulation of energy XT2Calculated by S42；Flood season Mo, step hydropower station generated electricity by natural water to the flood withered alternately end of term；
At the flood withered alternately end of term to year end, step accumulation of energy equilibrium is adjusted to year end target accumulation of energy XT, step accumulation of energy variable quantity is consistent month by month；Order
The moon number at the flood withered alternately end of term to year end is T3, and such as flood withered alternately end of term is September end, then T3=3, and calculation formula is as follows,
Flood season Mo to the flood withered alternately end of term：ESend out t={ ENatural t,Emax,t}min
Xt=Xt-1+ENatural t-ESend out t
The flood withered alternately end of term to year end：
ESend out t={ Xt-1-Xt+ENatural t, Emax,t}min
5th, step accumulation of energy-electricity scheduling graph is drawn
After all long series or Typical Year step storage energy value calculation are finished, step accumulation of energy in connection result of calculation value formation year
Graph, will thereon envelope curve as dispatching line in the normal accumulation of energy area of step, lower envelope curve as the normal accumulation of energy area dispatching line of step,
Wherein flood season follows the principle for reducing under the premise of flood control safety is ensured and abandoning water risk, and the period, normal accumulation of energy area needed special place
Reason, i.e., normal accumulation of energy area dispatching line value is taken as the portion between flood just step accumulation of energy zone of reasonableness lower limit, upper dispatching line
It is divided into normal accumulation of energy area, normal accumulation of energy area area above is reduction accumulation of energy area, and region below is increase accumulation of energy area；According in one
Step generator operation rule, different zones are divided into by normal accumulation of energy area according to the time, wherein beginning of the year step accumulation of energy is to mesh at the beginning of flood
Mark accumulation of energy balances out the period fallen for balanced falling zone, and the period that flood season step accumulation of energy passively goes up is passive rise area, flood season
The period that last step accumulation of energy is adjusted according to water to year end target accumulation of energy is active accommodation area；Adjusted in the step accumulation of energy-electricity
Balanced falling zone, passively rise area, active accommodation area, normal accumulation of energy area, reduction accumulation of energy area, increase accumulation of energy are marked out in degree figure
Area, ultimately forms step accumulation of energy-electricity Optimized Operation figure.
6th, step accumulation of energy-electricity scheduling graph uses regular (reservoir dispatching method)
From step accumulation of energy-electricity Optimized Operation it can be seen from the figure that, in terms of regulation of longitudinal angle, scheduling graph is divided into reduction accumulation of energy
Area, normal accumulation of energy area and increase accumulation of energy area；In terms of lateral angles, normal accumulation of energy area is divided into balanced falling zone, quilt according to the time
Dynamic rise area, active accommodation area.
1) normal accumulation of energy area：
A. year first arrival flood is first (balanced falling zone)：The period step accumulation of energy balances out towards target accumulation of energy value at the beginning of flood, ladder
Level reservoir answers generated energy to include natural water generating capacity and accumulation of energy and normally disappear to fall part.
B. flood season (area of passively going up)：Retaining is shut down in period tap power station, and downstream stage power station is naturally come according to step
Water generates electricity, and step accumulation of energy passively goes up.
C. flood season Mo to year end (active accommodation area)：Compensation, each storehouse in downstream is downstream adjusted in the period backbone reservoir
Progressively lifting reservoir level, step hydropower station adjusts water level according to water to year end target accumulation of energy.
2) reduction accumulation of energy area
If accumulation of energy is interval interior herein, it should suitably increase and exert oneself, increase generated energy makes accumulation of energy return to normal accumulation of energy area.
3) increase accumulation of energy area
If accumulation of energy is interval interior herein, it should suitably reduce and exert oneself, reducing generated energy makes accumulation of energy return to normal accumulation of energy area.
Embodiments of the invention combination step hydropower station generator operation rule, rationally reflects step hydropower station accumulation of energy and step hydropower station
Gross generation relation, fully instructs step hydropower station generator operation mode.
Embodiment three
The step Optimized Operation drawing drawing method controlled based on accumulation of energy of the present embodiment, with Cascade Stations on Wujiang River power station (including flood
Family cross, east wind, Suofengying, Wu Jiangdu, great Hua water, Ge Liqiao, Goupitan, Silin, nine power stations of Sha Tuo) be research object, bag
Include following steps：
First, generator operation rule in Cascade Stations on Wujiang River power station is determined
Just (- 4 the end of month at the beginning of 1 month) generator operation is regular for year first arrival flood：Defer to step accumulation of energy and balance out and fall principle, step accumulation of energy
Balance out to target accumulation of energy at the beginning of flood；Leading power station Hong Jia crosses the regulation compensation that downstream discharges water, to raise downstream stage power station water
Position.
Flood season (at the beginning of 5 months-August end) generator operation rule：Leading power station Hong Jia crosses shutdown retaining, and downstream stage generated energy is
Step natural water generating capacity stores with both downstream stage power station maximum generation abilities in addition to big vast family is crossed smaller value, step
Can passively it go up.
Flood season Mo to year end (September first -12 the end of month) generator operation rule：Leading power station Hong Jia crosses the regulation that downstream discharges water and mended
Repay, each reservoir level lifting in downstream, step hydropower station adjusts water level according to water to year end target accumulation of energy, and wherein flood season Mo hands over to flood is withered
Generated electricity for the end of term (September first arrival September end) step hydropower station by natural water, the flood withered alternately end of term to year end (September end to 12 the end of month)
Step accumulation of energy equilibrium is adjusted to target accumulation of energy.
2nd, the Cascade Stations on Wujiang River accumulation of energy zone of reasonableness of key node is determined
Flood just (4 the end of month) Cascade Stations on Wujiang River accumulation of energy zone of reasonableness be defined as 19~3,000,000,000 kWh, primarily for it is following some examine
Consider：
1) from abandon water risk angle consider, Cascade Stations on Wujiang River flood just accumulation of energy should not be higher than 3,000,000,000 kWh, otherwise flood season abandon water risk
It is larger；
2) consider from Hong Jiadu later stage retainings angle, the just accumulation of energy of Cascade Stations on Wujiang River flood should not be higher than 3,000,000,000 kWh, otherwise big vast family is crossed
Abandon water risk larger.
3) consider from unit economy point and scheduling actual angle, Cascade Stations on Wujiang River flood just accumulation of energy not preferably less than 1,900,000,000 kWh,
Otherwise unit economy level is not high.
The beginning of the year (at the beginning of 1 month) Cascade Stations on Wujiang River accumulation of energy zone of reasonableness is defined as 50~7,000,000,000 kWh, primarily for it is following some examine
Consider：
1) consider from peak regulation risk angle, accumulation of energy not preferably less than 5,000,000,000 kWh, otherwise steady to power grid security at the beginning of Cascade Stations on Wujiang River
Fixed operation can be impacted；
2) consider from hydro thermal coordination angle, accumulation of energy should not be higher than 7,000,000,000 kWh at the beginning of Cascade Stations on Wujiang River, otherwise can be squeezed in the withered phase
Account for thermoelectricity generating space.
3rd, natural water generating capacity is calculated
Using long series or Typical Year step natural runoff data as foundation, by each power station characteristic of step, (t-1) the end of month ladder
Level power station water level combination, calculates t monthly average water consumption rates, and then calculate t month step natural water generating capacities by following formula.When
During t=1, January, water consumption rate step hydropower station water level combination as at the beginning of 1 month was extrapolated, and substituted into following formula calculating step natural water in January hair
Electric energy power.
In formula, ENatural tFor t month step natural water generating capacities；ENatural i, tGenerated electricity for t month power stations i natural water
Ability；N is step hydropower station sum；Qi,tFor t month power stations i dam site natural water flow；ri,tFor being averaged for t month power station i
Water consumption rate；tsFor time, unit s.
4th, step stores energy value calculation
Step hydropower station generator operation rule in one, the step accumulation of energy zone of reasonableness of material time node in two,
Step t month natural water generating capacities in three, it then follows the conservation of energy, calculate t the end of month step accumulation of energys and t month steps hair
Electricity, while t the end of month step hydropower station water level combinations and t month step maximum generation abilities are calculated, wherein t month steps are maximum
Generating capacity is specifically included as the constraint upper limit of t month step generated energy：
If S41, the t months are in year first arrival flood just (balanced falling zone)：Period step accumulation of energy change, which is followed, to be balanced out
Principle, i.e., should be equal per daily generation.According to beginning of the year step accumulation of energy X0With step accumulation of energy X at the beginning of floodT1, send out the step t months in period
Electricity ESend out t, t the end of month step accumulation of energys XtCalculation formula is as follows,
Xt=Xt-1+ENatural t-ESend out t
In formula, D1~T1For total number of days at the beginning of year first arrival flood；Emax,tFor t month step hydropower stations maximum generation ability；{}minFor
Take the smaller in the two.
If S42, the t months are in flood season (area of passively going up)：The period flood just step accumulation of energy XT1Calculated by S41, tap
Retaining is shut down in power station, and downstream stage power station generates electricity by full step natural water.Step t month generated energy ESend out tFor the moon full step
The smaller of natural water generating capacity and downstream stage power station maximum generation ability, t the end of month step accumulation of energys XtCan be as at the beginning of flood
Step accumulation of energy is calculated month by month, and calculation formula is as follows,
ESend out t={ ENatural t,EDetain dragon max, t}min
Xt=Xt-1+ENatural t-ESend out t
In formula, EDetain dragon max, tTo deduct the maximum generation ability in downstream stage power station outside leading power station the t months.
Step accumulation of energy is known as X at the end of S43, the periodT, i.e. XT=X0, flood season Mo step accumulation of energy XT2Calculated by S72；Flood
The end of term, step hydropower station generated electricity by natural water to the flood withered alternately end of term；The flood withered alternately end of term to year end, step accumulation of energy equilibrium adjustment
To year end target accumulation of energy XT, step accumulation of energy variable quantity is consistent month by month；The moon number for making the flood withered alternately end of term to year end is T3, calculates public
Formula is as follows,
Flood season Mo to the flood withered alternately end of term：ESend out t={ ENatural t,Emax,t}min
Xt=Xt-1+ENatural t-ESend out t
The flood withered alternately end of term to year end：
ESend out t={ Xt-1-Xt+ENatural t, Emax,t}min
After t month steps storage energy value calculation is finished, t=t+1 is made, three are returned to, cycle calculations (t+1) moon step naturally comes
Water generating capacity and (t+1) the end of month step accumulation of energy value, terminate until 12 the end of month calculated.Using many annual step natural waters as
Example, many annual natural water amounts, the corresponding many annuals of the step accumulation of energy zone of reasonableness upper limit month by month of Cascade Stations on Wujiang River power station dam site
The corresponding many annual natural water generating capacities of natural water generating capacity, step accumulation of energy zone of reasonableness lower limit respectively as table 1,
Shown in table 2, table 3：
The Cascade Stations on Wujiang River power station dam site of table 1 many annual natural water amounts month by month
| Power station | January | 2 months | March | April | May | June | July | August | September | October | November | December |
| Flood | 1.26 | 1.14 | 1.29 | 2.24 | 5.05 | 8.95 | 8.71 | 5.87 | 4.27 | 3.62 | 2.34 | 1.51 |
| East | 2.84 | 2.56 | 2.90 | 5.04 | 11.34 | 20.12 | 19.57 | 13.20 | 9.61 | 8.14 | 5.25 | 3.40 |
| Rope | 3.34 | 3.01 | 3.41 | 5.93 | 13.34 | 23.66 | 23.02 | 15.53 | 11.30 | 9.57 | 6.18 | 3.99 |
| Crow | 4.09 | 3.69 | 4.18 | 7.26 | 16.34 | 28.98 | 28.20 | 19.02 | 13.84 | 11.72 | 7.57 | 4.89 |
| Structure | 6.16 | 5.56 | 6.30 | 10.94 | 24.63 | 43.68 | 42.50 | 28.66 | 20.87 | 17.67 | 11.41 | 7.37 |
| Think | 7.16 | 6.46 | 7.32 | 12.71 | 28.61 | 50.74 | 49.37 | 33.30 | 24.24 | 20.52 | 13.25 | 8.57 |
| It is husky | 8.13 | 7.34 | 8.31 | 14.44 | 32.50 | 57.63 | 56.08 | 37.82 | 27.53 | 23.31 | 15.05 | 9.73 |
| Greatly | 0.65 | 0.59 | 0.67 | 1.16 | 2.61 | 4.62 | 4.50 | 3.03 | 2.21 | 1.87 | 1.21 | 0.78 |
| Lattice | 0.71 | 0.64 | 0.72 | 1.26 | 2.83 | 5.02 | 4.89 | 3.30 | 2.40 | 2.03 | 1.31 | 0.85 |
The corresponding many annual step natural water generating capacities of the step accumulation of energy zone of reasonableness upper limit of table 2
| Power station | January | 2 months | March | April | May | June | July | August | September | October | November | December |
| Flood | 0.42 | 0.37 | 0.37 | 0.47 | 0.00 | 0.00 | 0.00 | 0.00 | 1.66 | 1.24 | 0.73 | 0.49 |
| East | 0.84 | 0.71 | 0.71 | 0.95 | 1.39 | 3.37 | 3.85 | 2.66 | 3.73 | 2.91 | 1.63 | 1.03 |
| Rope | 0.57 | 0.50 | 0.50 | 0.73 | 1.30 | 2.97 | 3.12 | 2.11 | 2.54 | 1.96 | 1.10 | 0.70 |
| Crow | 1.13 | 0.97 | 1.00 | 1.47 | 2.72 | 5.89 | 6.28 | 4.23 | 4.73 | 3.74 | 2.23 | 1.41 |
| Structure | 2.85 | 2.50 | 2.68 | 4.34 | 8.92 | 16.99 | 17.14 | 11.27 | 10.64 | 8.87 | 5.63 | 3.55 |
| Think | 1.24 | 1.10 | 1.22 | 2.07 | 4.13 | 7.36 | 7.16 | 4.69 | 4.27 | 3.67 | 2.41 | 1.53 |
| It is husky | 1.46 | 1.30 | 1.45 | 2.47 | 4.89 | 8.50 | 8.19 | 5.41 | 4.78 | 4.18 | 2.80 | 1.78 |
| Greatly | 0.24 | 0.21 | 0.23 | 0.42 | 0.98 | 1.53 | 1.44 | 0.91 | 0.62 | 0.55 | 0.42 | 0.29 |
| Lattice | 0.18 | 0.16 | 0.18 | 0.34 | 0.79 | 1.22 | 1.13 | 0.70 | 0.47 | 0.41 | 0.31 | 0.21 |
| Step | 8.93 | 7.82 | 8.35 | 13.26 | 25.12 | 47.83 | 48.32 | 31.98 | 33.45 | 27.52 | 17.25 | 10.98 |
The corresponding many annual step natural water generating capacities of the step accumulation of energy zone of reasonableness lower limit of table 3
| Power station | January | 2 months | March | April | May | June | July | August | September | October | November | December |
| Flood | 0.37 | 0.34 | 0.35 | 0.46 | 0.00 | 0.00 | 0.00 | 0.00 | 1.52 | 1.11 | 0.64 | 0.43 |
| East | 0.82 | 0.70 | 0.70 | 0.93 | 1.36 | 3.30 | 3.78 | 2.61 | 3.66 | 2.86 | 1.59 | 1.01 |
| Rope | 0.57 | 0.50 | 0.50 | 0.73 | 1.30 | 2.97 | 3.12 | 2.11 | 2.54 | 1.96 | 1.10 | 0.70 |
| Crow | 1.09 | 0.94 | 0.97 | 1.42 | 2.62 | 5.69 | 6.07 | 4.09 | 4.58 | 3.62 | 2.16 | 1.37 |
| Structure | 2.82 | 2.43 | 2.55 | 4.05 | 8.19 | 15.79 | 16.11 | 10.72 | 10.25 | 8.65 | 5.56 | 3.50 |
| Think | 1.21 | 1.08 | 1.20 | 2.04 | 4.09 | 7.26 | 7.05 | 4.61 | 4.18 | 3.58 | 2.35 | 1.49 |
| It is husky | 1.43 | 1.26 | 1.40 | 2.37 | 4.68 | 8.17 | 7.90 | 5.24 | 4.65 | 4.07 | 2.74 | 1.75 |
| Greatly | 0.24 | 0.21 | 0.23 | 0.41 | 0.94 | 1.48 | 1.40 | 0.89 | 0.61 | 0.54 | 0.42 | 0.29 |
| Lattice | 0.18 | 0.16 | 0.18 | 0.34 | 0.79 | 1.22 | 1.13 | 0.70 | 0.47 | 0.41 | 0.31 | 0.21 |
| Step | 8.73 | 7.61 | 8.07 | 12.75 | 23.98 | 45.87 | 46.56 | 30.96 | 32.46 | 26.81 | 16.87 | 10.74 |
5th, step accumulation of energy-electricity scheduling graph is drawn
Long series or Typical Year step accumulation of energy result of calculation value that connection above step is obtained, form step accumulation of energy in year
Journey line, will thereon envelope curve as dispatching line in the normal accumulation of energy area of step, lower envelope curve as the normal accumulation of energy area dispatching line of step, its
Middle flood season follows the principle for reducing under the premise of flood control safety is ensured and abandoning water risk, and the period, normal accumulation of energy area needed specially treated,
I.e. normal accumulation of energy area dispatching line value is taken as flood just step accumulation of energy zone of reasonableness lower limit.Above and below the normal accumulation of energy area of Cascade Stations on Wujiang River
Dispatch line as shown in table 4：
Dispatching line in the normal accumulation of energy area of the Cascade Stations on Wujiang River of table 4
| Month | January | 2 months | March | April | May | June | July | August | September | October | November | December |
| Scheduling graph is reached the standard grade (hundred million kWh) | 60 | 50 | 40 | 31 | 37 | 51 | 69 | 83 | 83 | 78 | 74 | 70 |
| Scheduling graph is offline (hundred million kWh) | 42 | 35 | 27 | 19 | 19 | 19 | 19 | 70 | 70 | 63 | 57 | 50 |
The normal accumulation of energy area of step is divided into different zones according to the time, wherein beginning of the year step accumulation of energy is to target accumulation of energy at the beginning of flood
It is balanced falling zone to balance out the period fallen, and the period that flood season step accumulation of energy passively goes up is passive rise area, flood season Mo to year
The period that last step hydropower station is adjusted according to water to target accumulation of energy is active accommodation area；The normal accumulation of energy area area above of step is drop
Low accumulation of energy area, region below is increase accumulation of energy area.
By above-mentioned scheduling line, characteristic area mark in scheduling graph, as shown in Fig. 2 it is excellent to form Cascade Stations on Wujiang River accumulation of energy-electricity
Change scheduling graph.
6th, step accumulation of energy-electricity scheduling graph uses regular (reservoir dispatching method)
From accumulation of energy-electricity Optimized Operation it can be seen from the figure that, in terms of regulation of longitudinal angle, scheduling graph be divided into reduction accumulation of energy area,
Normal accumulation of energy area and increase accumulation of energy area；In terms of lateral angles, normal accumulation of energy area is according to time subregion：Year first arrival flood is just (- 4 at the beginning of 1 month
The end of month) for balanced falling zone, flood season (at the beginning of 5 months-August end) is passive rise area, and flood season Mo to year end (September first -12 the end of month) is
Active accommodation area.
A. year first arrival flood just -4 the end of month (balanced falling zone) at the beginning of 1 month：Accumulation of energy should be towards target accumulation of energy value at the beginning of flood in the period
(19~3,100,000,000 kWh) disappearing falls, and step reservoir answers generated energy to include natural water generating capacity and accumulation of energy and normally disappear to fall part.
At the beginning of 5 months flood seasons b.-August is last (area of passively going up)：Big vast family crosses power station and shuts down retaining, downstream stage power station in the period
Generated electricity according to step natural water, step accumulation of energy passively goes up.Generated energy is answered to be generated electricity for step natural water in downstream stage power station
Ability and both downstream stage power station maximum generation abilities in addition to big vast family is crossed smaller value.
C. -12 the end of month at the beginning of flood season Mo to year end September (active accommodation area)：Big vast family, which is crossed, in the period is downstream adjusted benefit
Repay, each storehouse in downstream progressively lifting reservoir level, each power station of step is adjusted according to water towards year end target accumulation of energy (50~7,000,000,000 kWh)
Water level.
2) reduction accumulation of energy area
If accumulation of energy is interval interior herein, it should suitably increase and exert oneself, increase generated energy makes accumulation of energy return to normal accumulation of energy area.
3) increase accumulation of energy area
If accumulation of energy is interval interior herein, it should suitably reduce and exert oneself, reducing generated energy makes accumulation of energy return to normal accumulation of energy area.
In the present invention, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicate or
Imply relative importance.Term " multiple " refers to two or more, unless otherwise clear and definite restriction.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of step Optimized Operation drawing drawing method controlled based on accumulation of energy, it is characterised in that the step Optimized Operation figure
In, using accumulation of energy as ordinate, step accumulation of energy-electricity scheduling graph is formed by abscissa of calendar month, the method for drafting is included such as
Lower step：
Step 1：Determine step hydropower station generator operation rule；
Step 2：Power station characteristic and dispatching of power netwoks actual influence factor are considered, from abandoning water risk, peak regulation risk, electricity risk angle
Analyzed, it is determined that the step accumulation of energy zone of reasonableness of material time node and corresponding step hydropower station water level combination in year；
Step 3：According to step accumulation of energy zone of reasonableness, using long series or Typical Year step natural runoff data as foundation, count first
Calculation makes t=1, calculates t month step natural water generating capacities；
Step 4：Closed according to the step accumulation of energy of the step hydropower station generator operation rule in step 1, the material time node in step 2
The step t month natural water generating capacities in scope, step 3 are managed, long series or the step accumulation of energy at the Typical Year t the end of month is obtained
Value；
Step 5：T=t+1 is made, if t≤12 turn to step 3, if t ＞ 12, step 6 is turned to；
Step 6：The long series of connection or step accumulation of energy graph in Typical Year step accumulation of energy result of calculation value formation year, will be wrapped thereon
Line is followed as line, lower envelope curve is dispatched in the normal accumulation of energy area of step as the normal accumulation of energy area dispatching line of step, wherein flood season
Ensure to reduce the principle for abandoning water risk under the premise of flood control safety, the period, normal accumulation of energy area needed specially treated, i.e., normal accumulation of energy area
The part that dispatching line value is taken as between flood just step accumulation of energy zone of reasonableness lower limit, upper dispatching line is normal accumulation of energy area,
Normal accumulation of energy area area above is reduction accumulation of energy area, and region below is increase accumulation of energy area；According to the step generator operation in step 1
Rule, different zones are divided into by normal accumulation of energy area according to the time, wherein beginning of the year step accumulation of energy balances out to target accumulation of energy at the beginning of flood
The period fallen is balanced falling zone, and the period that flood season step accumulation of energy passively goes up is passive rise area, flood season Mo step accumulation of energy root
The period adjusted according to water to year end target accumulation of energy is active accommodation area；Marked out in the step accumulation of energy-electricity scheduling graph
Balanced falling zone, passively rise area, active accommodation area, normal accumulation of energy area, reduction accumulation of energy area, increase accumulation of energy area, ultimately form ladder
Level accumulation of energy-electricity Optimized Operation figure.
2. the step Optimized Operation drawing drawing method controlled according to claim 1 based on accumulation of energy, it is characterised in that the step
Rapid 1 specifically includes：Cascade Hydropower Stations on River Basin considers combined dispatching mode, and beginning of the year step accumulation of energy balances out to target accumulation of energy at the beginning of flood,
Leading power station, which downstream discharges water, adjusts compensation；Flood season reduces step on the premise of flood control safety is ensured and abandons water risk, tap electricity
Stand and shut down retaining, remaining power station of downstream is passively gone up by the multiple full method of step natural water, step accumulation of energy；Flood season Mo to year end,
Leading power station, which downstream discharges water, adjusts compensation, and step accumulation of energy is adjusted to year end target accumulation of energy according to water.
3. the step Optimized Operation drawing drawing method controlled according to claim 1 based on accumulation of energy, it is characterised in that the step
It is based on including the step of abandoning water risk control step hydropower station node accumulation of energy scope in rapid 2：Using power station length series or Typical Year footpath
Stream data, considers power station characteristic, dispatching of power netwoks factor, and determine power station under flood just different step accumulation of energys abandons water risk, and
With reference to completely sending out multiple in the case of ensuring safety, the principle of reducing abandoned water, provide flood just step accumulation of energy zone of reasonableness.
4. the step Optimized Operation drawing drawing method controlled according to claim 1 based on accumulation of energy, it is characterised in that the step
The step of peak regulation risk control step hydropower station node accumulation of energy scope is based in rapid 2 includes：The first hydropower station water level of year first arrival flood is with the moon
Part progressively disappear, and at least disappear at the beginning of flood and fall on flood season limit level；At the beginning of the year, workload demand, electric power generating composition, water power hair are considered
Electric energy power Multiple factors, it is determined that the peak regulation risk in beginning of the year difference step accumulation of energy first arrival next year flood first period, and combine the tune of power network
Peak control requirement provides the beginning of the year reasonable accumulation of energy scope of step.
5. the step Optimized Operation drawing drawing method controlled according to claim 1 based on accumulation of energy, it is characterised in that the step
The step of electricity risk control step hydropower station node accumulation of energy scope is based in rapid 2 includes：According to prediction water situation establishment water power
Stand year generation schedule, it is determined that annual electricity target；At the beginning of the year, consider natural water, power station characteristic, coordinate with other power supplys
Etc. factor, it is determined that ladder at the beginning of the electricity risk under beginning of the year difference step accumulation of energy, and combination step hydropower station electricity objectives of examination determination
Level rationally accumulation of energy scope.
6. the step Optimized Operation drawing drawing method controlled according to claim 1 based on accumulation of energy, it is characterised in that the step
Specifically included in rapid 3：
S61, by each power station characteristic of step, each power station water level combination of (t-1) the end of month step, if t=1, as at the beginning of 1 month step electricity
Stand water level combination, calculate t monthly average water consumption rates；
S62, according to long series or Typical Year step natural runoff data, calculate t month step natural water generating capacities, calculating
Formula is
In formula, ENatural tFor t month step natural water generating capacities；ENatural i, tFor t month power stations i natural water generating capacity；N
For step hydropower station sum；Qi,tFor t month power stations i dam site natural water flow；ri,tFor t month power stations i average water consumption rate；
tsFor time, unit s.
7. the step Optimized Operation drawing drawing method controlled according to claim 1 based on accumulation of energy, it is characterised in that the step
Rapid 4 specifically include：It is reasonable according to the step accumulation of energy of the step generator operation rule in step 1, the material time node in step 2
Long series or Typical Year step t month natural water generating capacities in scope, step 3, it then follows the conservation of energy, calculate the t months
Last step accumulation of energy and t month step generated energy, while calculating t the end of month step hydropower station water level combinations and t month steps maximum hair
Electric energy power, wherein the constraint upper limit of the t month step maximum generation abilities as t month step generated energy, specific to calculate and draw
Method is as follows：
If at the beginning of S71, the t months are in year first arrival flood：Period step accumulation of energy change, which follows to balance out, falls principle, i.e., per daily generation
Answer equal according to beginning of the year step accumulation of energy X0With step accumulation of energy X at the beginning of floodT1, period step t month generated energy ESend out t, t the end of month steps
Accumulation of energy XtCalculation formula is as follows,
Xt=Xt-1+ENatural t-ESend out t
In formula, D1~T1For total number of days at the beginning of year first arrival flood；Emax,tFor t month step hydropower stations maximum generation ability；{}minTo take two
Smaller in person；
If S72, the t months are in flood season：The period flood just step accumulation of energy XT1Calculated by S71, retaining, downstream are shut down in leading power station
Step hydropower station generates electricity by full step natural water；Step t month generated energy ESend out tFor the moon full step natural water generating capacity and
The smaller of downstream stage power station maximum generation ability, t the end of month step accumulation of energys XtIt step accumulation of energy can month by month calculate, count as at the beginning of flood
Calculate formula as follows,
ESend out t={ ENatural t,EDetain dragon max, t}min
Xt=Xt-1+ENatural t-ESend out t
In formula, EDetain dragon max, tTo deduct the maximum generation ability in downstream stage power station outside leading power station the t months；
If S73, the t months are flood season Mo to year end：Step accumulation of energy is known as X at the end of the periodT, i.e. XT=X0, flood season Mo step storage
Can XT2Calculated by S72；Flood season Mo, step hydropower station generated electricity by natural water to the flood withered alternately end of term；The flood withered alternately end of term to year
End, step accumulation of energy equilibrium is adjusted to year end target accumulation of energy XT, step accumulation of energy variable quantity is consistent month by month；Make the flood withered alternately end of term to year
The moon number at end is T3, and such as flood withered alternately end of term is September end, then T3=3, and calculation formula is as follows,
Flood season Mo to the flood withered alternately end of term：ESend out t={ ENatural t,Emax,t}min
Xt=Xt-1+ENatural t-ESend out t
The flood withered alternately end of term to year end：
ESend out t={ Xt-1-Xt+ENatural t, Emax,t}min。
8. the step Optimized Operation drawing drawing method controlled according to claim 1 based on accumulation of energy, it is characterised in that the step
Rapid 6 specifically include：Long series or Typical Year step accumulation of energy result of calculation value that Connection Step 1- steps 5 are obtained, form year manhole ladder
Level accumulation of energy graph, will envelope curve is as line is dispatched thereon in the normal accumulation of energy area of step, lower envelope curve is as under the normal accumulation of energy area of step
Line is dispatched, wherein flood season follows the principle for reducing under the premise of flood control safety is ensured and abandoning water risk, and the period, normal accumulation of energy area was needed
Specially treated, i.e., normal accumulation of energy area dispatching line value is taken as flood just step accumulation of energy zone of reasonableness lower limit, normal accumulation of energy area with
On be labeled as reduction accumulation of energy area, increase accumulation of energy area is labeled as below, by normal accumulation of energy area per year at the beginning of first arrival flood, flood season, flood season Mo
Balanced falling zone, passively rise area, active accommodation area are respectively labeled as to year end.
9. a kind of reservoir dispatching method of any step accumulation of energy-electricity Optimized Operation figure in utilization claim 1-8,
Characterized in that, in the step accumulation of energy-electricity Optimized Operation figure, on longitudinal direction, scheduling graph, which is divided into, reduces accumulation of energy area, normal
Accumulation of energy area and increase accumulation of energy area；In transverse direction, normal accumulation of energy area is divided into balanced falling zone, passively rise area, active according to the time
Adjust area；The dispatching method comprises the following steps：
When step accumulation of energy is located at normal accumulation of energy area, target accumulation of energy value at the beginning of setting step accumulation of energy towards flood at the beginning of year first arrival flood disappears, ladder
Level reservoir answers generated energy to include natural water generating capacity and accumulation of energy and normally disappear to fall part；The leading power station of flood season setting, which is shut down, to be stored
Water, downstream stage power station generates electricity according to natural water, and step accumulation of energy passively goes up；Flood season Mo to year end set step accumulation of energy according to
Water is adjusted to year end target accumulation of energy；
When step accumulation of energy is located at reduction accumulation of energy area, setting power station, which is increased, exerts oneself, and increase generated energy makes accumulation of energy return to normal accumulation of energy area；
When step accumulation of energy is located at increase accumulation of energy area, the reduction of setting power station is exerted oneself, and reducing generated energy makes accumulation of energy return to normal accumulation of energy area.
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