CN109543887A - A kind of Water level trend control method of daily regulation reservoir different times - Google Patents
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Abstract
The invention discloses a kind of Water level trend control methods of daily regulation reservoir different times, the ratio of annual runoff volume is specially accounted for according to flood season runoff amount, daily regulation reservoir is divided into dry season, withered flood alternating phase, flood season and withered alternately 4 different times of phase of flood, Water level trend control is carried out respectively to 4 different times；High water level operation is kept with dry season daily regulation reservoir in Water level trend control process, the withered flood alternating phase is all of flood small before flood, water level keeps rationally high level simultaneously, flood season utilizes the multiple electricity of flood resource, the flood withered alternately phase utilizes the multiple electricity of autumn flood, to control target, the water level control range in each period is determined.The present invention improves daily regulation reservoir economic operation level, realizes and rationally utilizes flood resource.
Description
Technical field
The present invention relates to a kind of Water level trend control methods of daily regulation reservoir different times, belong to water conservancy and hydropower regulation skill
Art field.
Background technique
After the completion of the general construction of hydropower stations, economical, societal benefits how are given full play to, improve enterprise to the maximum extent in electricity
Competitiveness is new problem that each large watershed genco faces to power in the market.Under new power market reform environment, water power
Enterprise faces the severe situation cut price, and situation of the water power in flood season " have water is just sent out, thermoelectricity is given way " has become history.It is seeking
Water power source operation, power benefit is asked to maximize, during balance " amount " and " valence " relationship, optimizing scheduling of reservoir, economy
Operation is just particularly important.
Summary of the invention
The purpose of the present invention is to provide a kind of Water level trend control methods of daily regulation reservoir different times, and day is adjusted
Reservoir is divided into dry season, withered flood alternating phase, flood season and withered 4 different times of alternately phase of flood and carries out Water level trend control, improves
Daily regulation reservoir economic operation level realizes and rationally utilizes flood resource.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of Water level trend control method of daily regulation reservoir different times, comprising the following steps:
1) daily regulation reservoir is divided into 4 different times and carries out Water level trend control, 4 different times are respectively low water
Phase, withered flood alternating phase, flood season and flood withered alternately phase；
2) Water Level Control in dry season is formulated；
3) Water Level Control of withered flood alternating phase is formulated；
4) Water Level Control in flood season is formulated；
5) Water Level Control of flood withered alternately phase is formulated.
In aforementioned step 1), the ratio of annual runoff volume is accounted for according to flood season runoff amount to determine dry season and flood season,
Specifically, determining these moons if the ratio that the flood season runoff amount of continuous some months accounts for annual runoff volume is greater than 80%
For flood season；Replaced phase and flood withered alternately phase for withered flood within flood season forward and backward one month, remaining month is dry season.
Flood season above-mentioned is 5-7 months.
In aforementioned step 2), the water level control target in the dry season are as follows: dry season daily regulation reservoir keeps high water level
Operation；
Control method are as follows: do not abandon water according to sending out line interruption 24 hours, determine water level control range；
Specific water level calculation method are as follows:
Reservoir inflow is rounded the average value of the average annual flow in dry season and single month maximum value is respectively calculated, and obtains
To Incoming water quantity；Line interruption is sent out for 24 hours in power station, guarantees that certain ecological flow does not abandon water with station service, according to the ecological flow
Amount, obtains outbound water, and then calculates control water level maximum value；
In aforementioned step 3), the control target of the withered flood alternating phase are as follows: all of flood small before flood, while water level
Keep rationally high level；
Control method are as follows: comprehensively consider, 1) occur flood when, do not abandon water within chance district flood 1 day 1 year one；2) when without flood,
Power station is sent out line interruption 1 day and does not abandon water, determines water level control range with the two influence factors；
Specific water level calculation method are as follows:
A, when for flood occurs, the case where not abandoning water in chance district flood 1 day 1 year one,
According to the P=20% frequencies above flood achievement that hydrological data provides, inquire into P=99%'s by III type curve of P-
Flood takes magnanimity on the 1st as Incoming water quantity on the 1st to obtain the 1 year one flood design value met；Hair stream is packed in conjunction with water power
Amount calculates full shampoo amount on the 1st, and then calculates control water level；
B, when for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow takes the average annual flow of withered flood alternating this month of phase, obtains Incoming water quantity on the 1st；Send out route in power station
It interrupts 1 day, guarantee that certain ecological flow does not abandon water with station service, according to the ecological flow, calculate full shampoo amount on the 1st, Jin Erji
Calculate control water level；
It is final to determine the minimum for being gradually down to control water level calculated by high water level in withered flood alternating phase water level control.
In aforementioned step 4), the control target in the flood season are as follows: utilize the multiple electricity of flood resource；
Control method are as follows: comprehensively consider, 1) daily regulation reservoir by chance flood 1 day 5 years one do not abandoned water；2) when without flood, electricity
Submitting of standing does not abandon water in line interruption 1 day；3) when without flood, 1 unit is lost for water is not abandoned within 1 day, these three influence factors determine water
Position control range；
Circular are as follows:
A, not the case where not abandoning water for chance flood 1 day 5 years one,
According to the P=20% frequencies above flood achievement that hydrological data provides, inquire into P=99%'s by III type curve of P-
Flood takes magnanimity on the 1st as Incoming water quantity on the 1st to obtain the 5 years one flood design values met；Hair stream is packed in conjunction with water power
Amount calculates full shampoo amount on the 1st, and then calculates control water level；
B, when for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow is rounded the average annual flow in flood season, and Incoming water quantity on the 1st is calculated；
Line interruption 1 day is sent out in power station, band station service guarantees that certain ecological flow does not abandon water, according to the ecological flow,
Outbound water on the 1st is calculated, and then calculates control water level；
C, when for no flood, 1 unit loses standby the case where not abandoning water in 1 day,
Reservoir inflow is rounded the average annual flow in flood season, and Incoming water quantity on the 1st is calculated；
It is standby to consider further that 1 unit loses, remaining unit completely sends out calculating, does not abandon water within 1 day, calculates 1 according to the metered flow of unit
Day full shampoo amount, and then calculate control water level；
It is final to determine that dry season water level controls the water level maximum value calculated under three kinds of influence factors.
In aforementioned step 5), the control target of the flood withered alternately phase is: utilizing the multiple electricity of autumn flood；
Control method are as follows: comprehensively consider, 1) daily regulation reservoir by chance flood 1 day 1 year one do not abandoned water；2) when without flood, electricity
Submitting of standing does not abandon water in line interruption 1 day, determines water level control range with the two influence factors；
Specific water level calculation method are as follows:
A, not the case where by chance flood 1 day 1 year one water not being abandoned for daily regulation reservoir,
According to the P=20% frequencies above flood achievement that hydrological data provides, inquire into P=99%'s by III type curve of P-
Flood takes magnanimity on the 1st as Incoming water quantity on the 1st to obtain the 1 year one flood design value met；Hair stream is packed in conjunction with water power
Amount calculates full shampoo amount on the 1st, and then calculates control water level；
B, when for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow takes the average annual flow of flood withered alternately this month of phase, and Incoming water quantity on the 1st is calculated；
Line interruption 1 day is sent out in power station, band station service guarantees that certain ecological flow does not abandon water, according to the ecological flow,
Full shampoo amount on the 1st is calculated, and then calculates control water level；
It is final to determine the peak for being gradually raised to control water level calculated by low water level in the withered alternately phase water level of flood.
Ecological flow above-mentioned is by environmental protection administration's requirement value.
Advantageous effects of the invention:
1) the method for the present invention is used, daily regulation reservoir economic operation level is improved, realizes energy-saving；
2) the method for the present invention is used, realizes and rationally utilizes flood resource；
3) the method for the present invention is used, while it is horizontal to also improve power station operation management.
Specific embodiment
The invention will be further described below.Following embodiment is only used for clearly illustrating technical side of the invention
Case, and not intended to limit the protection scope of the present invention.
The present invention provides a kind of Water level trend control method of daily regulation reservoir different times, comprising the following steps:
1) 4 different times of daily regulation reservoir point carry out Water level trend control, and respectively dry season, withered flood replaces phase, flood
Phase, flood withered alternately phase.According to the water regime in basin, the ratio of annual runoff volume is accounted in conjunction with flood season runoff amount to determine low water
Phase and flood season, specifically, determining if the ratio that the flood season runoff amount of continuous some months accounts for annual runoff volume is greater than 80%
For flood season, flood season here is generally 5-7 months.After determining flood season, replaced phase and the withered friendship of flood for withered flood within flood season forward and backward one month
For the phase, remaining month is dry season.
Such as: the northern basin Pan Jiang generally annual June enters the flood season, and general December enters dry season, is provided according to 1 year runoff
Material is it is found that account for the 84% of annual runoff volume to 11 monthly runoffs June.Then when carrying out analysis of the invention, dry season is chosen
Replace that the phase is May, flood season be November in June-, the flood withered alternately phase is December for April January next year to next year, withered flood.Furong River
Basin is entered the flood season annual April, and October in April-is flood season, according to 1 year Streamflow Data it is found that flood season runoff amount accounts for annual runoff
80% or more of total amount.So choose dry season be 2 month of December to next year, withered flood alternating the phase be March, flood season be April extremely
October, flood withered alternately phase are November.
2) Water Level Control in dry season is formulated.
Dry season is the prime time that daily regulation reservoir keeps high water level operation, reduces water consumption rate, can be according to upstream regulation
The good reservoir storage of performance puts adjusting, rationally controls the operating water level of daily regulation reservoir, can under the premise of guaranteeing safety, not abandoning water
Operating water level is raised as far as possible, is realized energy-saving.
So the control target in dry season is: dry season daily regulation reservoir keeps high water level operation.
Control method are as follows: consider that submitting does not abandon water in line interruption 24 hours and determines water level control range.
Specific water level calculation method are as follows:
Reservoir inflow is rounded the average value of the average annual flow in dry season and single month maximum value is respectively calculated, electricity
It stands and sends out line interruption for 24 hours, guarantee that certain ecological flow does not abandon water with station service.
For example, the average value of the average annual flow in some hydropower station entire dry season is 53.3m3/ s, maximum value is within single month
95.8m3/ s, ecological flow then in the case of two kinds, are by the control water level of mean value calculation by environmental protection administration's requirement value
883.57m is 882.25m by the control water level of maximum value calculation, final to determine that dry season water level control is no more than 883.57m.
As a result such as table 1.
The control water level calculated result in 1 some hydropower station dry season of table
3) Water Level Control of withered flood alternating phase is formulated.
The withered flood alternating phase is that annual-storage reservoir water level disappears substantially and drops down onto reduced levels, has biggish regulating space, adjusts day
Reservoir can make full use of small flood before flood, while water level can maintain reasonable higher position.
So the control target of withered flood alternating phase is: all of flood small before flood, while water level is kept rationally compared with Gao Shui
It is flat.
Control method are as follows: when comprehensively considering 1) generation flood, do not abandon water in chance district flood 1 day 1 year one；2) when without flood,
Power station is sent out line interruption 1 day and does not abandon water, determines water level control range with the two influence factors.
Specific water level calculation method are as follows:
When for flood occurs, the case where not abandoning water in chance district flood 1 day 1 year one,
According to the P=20% frequencies above flood achievement that hydrological data provides, inquire into P=99%'s by III type curve of P-
Flood (chance design flood in 1 year one), takes magnanimity on the 1st as Incoming water quantity on the 1st.Flow rate calculation 1 day full hair is completely being sent out in conjunction with power station
Water finally calculates water level.
When for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow takes the average annual flow of withered flood alternating this month of phase, then calculates Incoming water quantity on the 1st.Send out line in power station
Road is interrupted for 24 hours, and band station service guarantees that certain ecological flow calculates water amount of power generating, then calculates water level.In the present invention, the ecological flow
Amount is by environmental protection administration's requirement value.
For example, some hydropower station, being inquired into obtain 1 year one chance flood at dam site magnanimity on the 1st is 0.47 hundred million m3, then storage water on the 1st
Amount is 47,000,000 m3, it is 200m that flow is completely sent out in power station3/ s, then full shampoo amount on the 1st is 17,280,000 m3, then obtaining net Incoming water quantity is
29720000 m3, it is 872.61m that water level, which is finally calculated,.The power station, withered flood alternating phase average annual flow is 54.8m3/ s,
Then Incoming water quantity on the 1st is 4,730,000 m3, power station sends out line interruption for 24 hours, guarantees 7m with station service3The ecological flow of/s is then sent out on the 1st
Electric water is 600,000 m3, it is 883.52m that water level, which is finally calculated,.It is final determine withered flood alternating phase water level control gradually by
883.52m being down to 872.61m operation.As a result such as table 2.
The control water level calculated result of 2 some hydropower station of table withered flood alternating phase
4) Water Level Control in flood season is formulated.
Flood using it is bad be disaster, making good use of is resource, and how flood resource is used in by power station well
Power generation is then one of the center of gravity of Hydropower Enterprise ' work.If reservoir reduces water consumption rate and raising of water level to covet in flood season
Operation may face a large amount of abandoning water；It is uneconomical if abandoning water in order to prevent and being chronically at low water level operation, it can not achieve
Maximizing the benefits.
Daily regulation during flood period reservoir main task is to abandon water, multiple electricity less under the premise that security is guaranteed, while to keep phase
To more reasonable water level, water consumption rate is taken into account.
So the control target in flood season is: utilizing the multiple electricity of flood resource.
Control method are as follows: comprehensively consider 1) daily regulation reservoir and by chance flood 1 day 5 years one do not abandoned water；2) when without flood, power station
It sends out line interruption 1 day and does not abandon water；3) when without flood, 1 unit is lost for water is not abandoned within 1 day, and three kinds of situations determine water level control model
It encloses.
Circular are as follows:
Not the case where not abandoning water for chance flood 1 day 5 years one,
According to the P=20% frequencies above flood achievement that hydrological data provides, inquire into P=99%'s by III type curve of P-
Flood (chance design flood in 1 year one), takes magnanimity on the 1st as Incoming water quantity on the 1st.Flow rate calculation 1 day full hair is completely being sent out in conjunction with power station
Water finally calculates water level.
When for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow is rounded the average annual flow in flood season, then calculates Incoming water quantity on the 1st.Send out line interruption in power station
For 24 hours, band station service guarantees that certain ecological flow calculates full shampoo amount on the 1st, then calculates water level.In the present invention, the ecological flow
By environmental protection administration's requirement value.
When for no flood, 1 unit loses standby the case where not abandoning water in 1 day,
Reservoir inflow is rounded the average annual flow in flood season, then calculates Incoming water quantity on the 1st.It is standby to consider that 1 unit loses,
Remaining unit completely sends out calculating, does not abandon within 1 day water, and the metered flow of single machine presses design parameter value.
5) Water Level Control of flood withered alternately phase is formulated.
Flood withered alternately phase, annual-storage reservoir water level are stored to higher level, and regulating space is relatively small, therefore daily regulation reservoir
Must be taken into consideration prevents autumn flood from abandoning water, while also suitably higher level to be kept to run, and reduces water consumption rate.
So the control target of flood withered alternately phase is: utilizing the multiple electricity of autumn flood.
Control method are as follows: comprehensively consider 1) daily regulation reservoir and by chance flood 1 day 1 year one do not abandoned water；2) when without flood, power station
It sends out line interruption 1 day and does not abandon water, two factors determine water level control range.
Specific water level calculation method are as follows:
Not the case where by chance flood 1 day 1 year one water is not abandoned for daily regulation reservoir,
According to the P=20% frequencies above flood achievement that hydrological data provides, inquire into P=99%'s by III type curve of P-
Flood (chance design flood in 1 year one), takes magnanimity on the 1st as Incoming water quantity on the 1st.Flow rate calculation 1 day full hair is completely being sent out in conjunction with power station
Water finally calculates water level.It is consistent with withered flood alternating phase results of measuring.
When for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow takes the average annual flow of flood withered alternately this month of phase, then calculates Incoming water quantity on the 1st.Send out line in power station
Road is interrupted for 24 hours, and band station service guarantees that ecological flow calculates full shampoo amount on the 1st, then calculates water level.In the present invention, the ecological flow
Amount is by environmental protection administration's requirement value.
For example, some hydropower station, being inquired into obtain 1 year one chance flood at dam site magnanimity on the 1st is 0.47 hundred million m3, then storage water on the 1st
Amount is 47,000,000 m3, it is 200m that flow is completely sent out in power station3/ s, then full shampoo amount on the 1st is 17,280,000 m3, then obtaining net Incoming water quantity is
29720000 m3, it is 872.61m that water level, which is finally calculated,.The power station, the withered alternately phase average annual flow of flood is 133.4m3/ s,
Then Incoming water quantity on the 1st is 11,530,000 m3, power station sends out line interruption for 24 hours, guarantees 7m with station service3The ecological flow of/s, then 1 day
Full shampoo amount is 600,000 m3, it is 881.09m that water level, which is finally calculated,.It is final to determine in the withered alternately phase water level of flood by 872.61m
Gradually it is raised to 881.09m operation.As a result such as table 3.
The control water level calculated result of 3 some hydropower station flood of table withered alternately phase
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of Water level trend control method of daily regulation reservoir different times, which comprises the following steps:
1) daily regulation reservoir is divided into 4 different times and carries out Water level trend controls, 4 different times are respectively dry season, withered
Flood replaces phase, flood season and flood withered alternately phase；
2) Water Level Control in dry season is formulated；
3) Water Level Control of withered flood alternating phase is formulated；
4) Water Level Control in flood season is formulated；
5) Water Level Control of flood withered alternately phase is formulated.
2. a kind of Water level trend control method of daily regulation reservoir different times according to claim 1, which is characterized in that
In the step 1), the ratio of annual runoff volume is accounted for determine dry season and flood season according to flood season runoff amount, specifically, if
The ratio that the flood season runoff amount of continuous some months accounts for annual runoff volume is greater than 80%, then determines these moons for flood season；Flood season
Replace phase and flood withered alternately phase for withered flood within forward and backward one month, remaining month is dry season.
3. a kind of Water level trend control method of daily regulation reservoir different times according to claim 2, which is characterized in that
The flood season is 5-7 months.
4. a kind of Water level trend control method of daily regulation reservoir different times according to claim 1, which is characterized in that
In the step 2, the water level control target in the dry season are as follows: dry season daily regulation reservoir keeps high water level operation；
Control method are as follows: do not abandon water according to sending out line interruption 24 hours, determine water level control range；
Specific water level calculation method are as follows:
Reservoir inflow is rounded the average value of the average annual flow in dry season and single month maximum value is respectively calculated, and is entered
Library water；Line interruption is sent out for 24 hours in power station, guarantees that certain ecological flow does not abandon water with station service, according to the ecological flow, obtains
To outbound water, and then calculate control water level maximum value.
5. a kind of Water level trend control method of daily regulation reservoir different times according to claim 1, which is characterized in that
In the step 3), the control target of the withered flood alternating phase are as follows: all of flood small before flood, while water level keeps rationally high
It is horizontal；
Control method are as follows: comprehensively consider, 1) occur flood when, do not abandon water within chance district flood 1 day 1 year one；2) when without flood, power station
It sends out line interruption 1 day and does not abandon water, determine water level control range with the two influence factors；
Specific water level calculation method are as follows:
A, when for flood occurs, the case where not abandoning water in chance district flood 1 day 1 year one,
According to the frequencies above flood achievement of P=20% that hydrological data provides, the flood of P=99% is inquired by III type curve of P-, from
And the 1 year one flood design value met is obtained, take magnanimity on the 1st as Incoming water quantity on the 1st；Hair flow rate calculation 1 is packed in conjunction with water power
Day full shampoo amount, and then calculate control water level；
B, when for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow takes the average annual flow of withered flood alternating this month of phase, obtains Incoming water quantity on the 1st；Send out line interruption in power station
1 day, band station service guarantee that certain ecological flow does not abandon water, according to the ecological flow, calculate full shampoo amount on the 1st, and then calculate
Control water level；
It is final to determine the minimum for being gradually down to control water level calculated by high water level in withered flood alternating phase water level control.
6. a kind of Water level trend control method of daily regulation reservoir different times according to claim 1, which is characterized in that
In the step 4), the control target in the flood season are as follows: utilize the multiple electricity of flood resource；
Control method are as follows: comprehensively consider, 1) daily regulation reservoir by chance flood 1 day 5 years one do not abandoned water；2) when without flood, power station is sent
Do not abandon water within line interruption 1 day out；3) when without flood, 1 unit is lost for water is not abandoned within 1 day, these three influence factors determine water level control
Range processed；
Circular are as follows:
A, not the case where not abandoning water for chance flood 1 day 5 years one,
According to the frequencies above flood achievement of P=20% that hydrological data provides, the flood of P=99% is inquired by III type curve of P-, from
And the 5 years one flood design values met are obtained, take magnanimity on the 1st as Incoming water quantity on the 1st；Hair flow rate calculation 1 is packed in conjunction with water power
Day full shampoo amount, and then calculate control water level；
B, when for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow is rounded the average annual flow in flood season, and Incoming water quantity on the 1st is calculated；
Line interruption is sent out 1 day in power station, band station service guarantees that certain ecological flow does not abandon water, according to the ecological flow, calculates 1
Day outbound water, and then calculate control water level；
C, when for no flood, 1 unit loses standby the case where not abandoning water in 1 day,
Reservoir inflow is rounded the average annual flow in flood season, and Incoming water quantity on the 1st is calculated；
It is standby to consider further that 1 unit loses, remaining unit completely sends out calculating, does not abandon water within 1 day, calculates 1 completely according to the metered flow of unit
Shampoo amount, and then calculate control water level；
It is final to determine that dry season water level controls the water level maximum value calculated under three kinds of influence factors.
7. a kind of Water level trend control method of daily regulation reservoir different times according to claim 1, which is characterized in that
In the step 5), the control target of the flood withered alternately phase is: utilizing the multiple electricity of autumn flood；
Control method are as follows: comprehensively consider, 1) daily regulation reservoir by chance flood 1 day 1 year one do not abandoned water；2) when without flood, power station is sent
It does not abandon water within line interruption 1 day out, determines water level control range with the two influence factors；
Specific water level calculation method are as follows:
A, not the case where by chance flood 1 day 1 year one water not being abandoned for daily regulation reservoir,
According to the frequencies above flood achievement of P=20% that hydrological data provides, the flood of P=99% is inquired by III type curve of P-, from
And the 1 year one flood design value met is obtained, take magnanimity on the 1st as Incoming water quantity on the 1st；Hair flow is packed in conjunction with water power, calculates 1
Day full shampoo amount, and then calculate control water level；
B, when for no flood, the case where not abandoning water, is sent out in power station line interruption 1 day,
Reservoir inflow takes the average annual flow of flood withered alternately this month of phase, and Incoming water quantity on the 1st is calculated；
Line interruption is sent out 1 day in power station, band station service guarantees that certain ecological flow does not abandon water, according to the ecological flow, calculates 1
Day full shampoo amount, and then calculate control water level；
It is final to determine the peak for being gradually raised to control water level calculated by low water level in the withered alternately phase water level of flood.
8. a kind of Water level trend control method of daily regulation reservoir different times according to claim 4,5,6 or 7, special
Sign is that the ecological flow is by environmental protection administration's requirement value.
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