CN109024466A - A kind of water diversion project method of operation conversion method - Google Patents
A kind of water diversion project method of operation conversion method Download PDFInfo
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- CN109024466A CN109024466A CN201810908874.5A CN201810908874A CN109024466A CN 109024466 A CN109024466 A CN 109024466A CN 201810908874 A CN201810908874 A CN 201810908874A CN 109024466 A CN109024466 A CN 109024466A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
- E02B1/02—Hydraulic models
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
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Abstract
The invention discloses a kind of water diversion project method of operation conversion methods, comprising: establishes the step of lock pump group regulates and controls lower hydraulical simulation model, which kind of water diversion project method of operation judgement select, whether judgement has 4 switch condition, conversion operation mode basic steps.This method is the dispatch control method applied to water diversion project conversion operation mode under operating condition of meeting an urgent need.It is uncoordinated with emergency demand that when meeting an urgent need regulation, water flow Response and restoring characteritics are poor, storage capacity is regulated and stored solving the problems, such as water diversion project.
Description
Technical field
The present invention relates to a kind of water diversion project traffic control control methods, are answering more particularly to a kind of consideration water diversion project
The scheduling controlling technology of conversion operation mode under anxious operating condition, specially a kind of water diversion project method of operation conversion method.
Background technique
Because there is spatial and temporal distributions unevenness in water resource, it is difficult to meet some regions socio-economic development water need
It asks, the wish that gate (or pumping plant) establishes water diversion project water resource is enable more preferably to obey people is set on channel and is deployed, is
Solve the important means of ground section water resource unbalanced supply-demand.In order to preferably carry out water resources operation and management, water diversion project is adopted
Combined regulating is carried out with gate or pumping plant, and defers to certain method of operation.
Long distance water transfer channel have downstream constant level (ordinary water level before lock), upstream ordinary water level (ordinary water level after lock), etc. capacity
(isometric) and control capability (control reservoir storage) this 4 kinds of methods of operation.Set one kind is generally deferred under normal operating conditions
The method of operation, but the advantages of each method of operation has itself and disadvantage, certain disadvantages may result in emergency and adjust under operating condition of meeting an urgent need
The difficulty of control increases, and is unfavorable for the implementation of emergency regulation.
Summary of the invention
For overcome the deficiencies in the prior art, the invention proposes a kind of consideration water diversion projects converts fortune under operating condition of meeting an urgent need
The dispatch control method of line mode.This method to solve water diversion project meet an urgent need regulation when water flow Response and restoring characteritics it is poor,
Storage capacity is regulated and stored the problem uncoordinated with emergency demand.The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of water diversion project method of operation conversion method, comprising the following steps:
1) it establishes lock pump group and regulates and controls lower hydraulical simulation model: the mould for water diversion project steady flow and unsteady flow process
It is quasi-；
Water diversion project steady flow and unsteady flow process are simulated, to carry out in terms of water diversion project canal water upper thread and storage capacity
It calculates, lock pumps the sunykatuib analysis that group regulates and controls lower channel waterpower response process；Construct one-dimensional hydraulic model, to check gate, bleeder,
Inverted-siphon, open channel Internal architecture object carry out generalizing processing, by the good interior building of generalization and Saint-venant Equations progress coupling
It closes, while discrete to equation group progress using 4 space-time bias formats of Preissmann, is solved with double-sweep method；
2) judgement select which kind of water diversion project method of operation: for judge water diversion project under what conditions it is convertible why
The kind method of operation；
If the conventional operation mode of water diversion project is that ordinary water level, accident section Upstream section are being answered after ordinary water level or lock before lock
The anxious lower bleeder normal water supply of regulation, canal pond flow become larger or become smaller suddenly, and the hydraulical simulation model of step 1) is utilized to carry out
Analysis, maintains original method of operation to be regulated and controled, and occurs that water flow Response and restoring characteritics are poor, storage capacity is regulated and stored with emergency demand not
The problem of coordination, can then enter step and 3) judge whether the condition with isometric method of operation is converted to；
3) judge whether have the step of switch condition: whether judgement has the step of switch condition: adjusting for judging
Whether Hydraulic Projects from a kind of method of operation are transformed into another method of operation feasible；
By the hydraulical simulation model of step 1) to each gate regulation and control scheme in the way of the water diversion project conversion operation into
Row simulation, meets the gate regulation and control scheme of following two condition if it exists, then it is feasible that explanation, which is converted to isometric method of operation,
:
A. the fluctuating procession of the water level water flow is not overflowed, it is desirable that water level maximum value is lower than crest elevation of levee, it may be assumed that
Δhmax≤ΔHmax, in which: Δ hmaxWith Δ HmaxThe maximum that each canal pool water level fluctuates in emergency regulation process respectively
Value and channel allow the maximum value of water-level fluctuation；
B. after water body is stablized, water level control point, which rises or falls amplitude, should be no more than limiting value, it may be assumed that
ΔhT, max≤ΔHT, max, in which: Δ hT, maxWith Δ HT, maxRespectively canal pool water level control point rises or falls amplitude
Actual value and maximum value；
4) conversion operation mode: for formulating the regulation measure of water diversion project conversion operation mode；
Operating gate is carried out, the ordinary water level method of operation after the ordinary water level method of operation before lock or lock is converted into isometric fortune
Line mode.
Further, unsteady flow calculates and uses one-dimensional Saint-venant Equations in step 1), and the equation is by continuity equation
It is formed with the equation of momentum:
In formula: x and t is respectively room and time coordinate；Q is the flow that laterally becomes a mandarin on unit length channel；α is momentum
Correction factor；Q is section flow；A is section discharge area；Z is water level；SfFor hydraulic gradient；S0For channel bottom sloping；G attaches most importance to
Power acceleration；
In formula: K is hydromodulus；
Enable the time term in formula (1)WithIt is 0, then obtains steady flow calculating formula:
Formula (3) is solved with the discrete scheme of formula (1) and numerical computation method, converges to unsteady flow accordingly
Steady flow on, i.e., constant stream calculation and unsteady flow, which calculate, meets " compatibility " criterion.
Further, the regulation method of step 4) conversion operation mode relies on the operation of upper and lower check gate or bleeder, really
Fixed strobe starts the time T of operation0With gate by initial flow Q0It is adjusted to later and decadent stage of a school of thought amount Q1Required time T1-T0；It is calculated
The upper and lower check gate in canal pond flows into the water V in canal pond in regulation processup, outflow canal pond water Vdown；And the canal pond is regulating and controlling
In the process bleeder or exit sluice point or water-break amount Vd。
Beneficial effects of the present invention:
The present invention is able to solve water diversion project, and when meeting an urgent need regulation, water flow Response and restoring characteritics are poor, storage capacity regulates and stores and meets an urgent need
The uncoordinated problem of demand.Strong operability, regulating effect are obvious.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is method flow diagram；
Fig. 2 is water diversion project schematic diagram；
Fig. 3 is ordinary water level method of operation schematic diagram before lock；
Fig. 4 is isometric method of operation schematic diagram；
Fig. 5 is ordinary water level method of operation schematic diagram after lock；
Fig. 6 is control storage capacity method of operation schematic diagram；
Fig. 7 is the pond Dan Qu operation schematic diagram；
Fig. 8 is outflow from sluice hole process.
Specific embodiment
Embodiment 1:
The present embodiment is a kind of water diversion project method of operation conversion method, and process is as shown in Figure 1.The present embodiment the method
The step of it is as follows:
1) it establishes the step of lock pump group regulates and controls lower hydraulical simulation model: for water diversion project steady flow and non-constant flowing through
The simulation of journey.Function specifically includes that the calculating of water diversion project canal water upper thread and storage capacity, and lock pumps group and regulates and controls lower channel waterpower response
The sunykatuib analysis of process.
For water diversion project (Fig. 2) feature, one-dimensional hydraulic model is constructed, to check gate, bleeder, inverted-siphon, open channel
Generalizing processing is carried out Deng complicated Internal architecture object, the good interior building of generalization is coupled with Saint-venant Equations, together
4 space-time bias formats of Shi Caiyong Preissmann are discrete to equation group progress, solved with double-sweep method.
Unsteady flow, which calculates, uses one-dimensional Saint-venant Equations, and the equation is made of continuity equation and the equation of momentum:
In formula: x and t is respectively room and time coordinate；Q is the flow that laterally becomes a mandarin on unit length channel；α is momentum
Correction factor；Q is section flow；A is section discharge area；Z is water level；SfFor hydraulic gradient；S0For channel bottom sloping；G attaches most importance to
Power acceleration.
In formula: K is hydromodulus.
Constant flow calculation model should be able to calculate the water flow when steady nonuniform flow water surface curve of open channel, i.e. open channel stabilization water delivery
State, to calculate canal pond storage capacity (the canal pond water body volume under water surface curve).Enable the time term in formula (1)With
It is 0, then obtains steady flow calculating formula:
Formula (3) is solved with the discrete scheme of formula (1) and numerical computation method, unsteady flow can be made to converge to phase
In the steady flow answered, i.e., constant stream calculation and unsteady flow calculate and meet " compatibility " criterion.
It is discrete to equation group progress using 4 space-time bias formats of Preissmann, be with double-sweep method solve system of equation
Mature technology repeats no more.
2) the step of which kind of water diversion project method of operation, is selected in judgement: can turn for judging water diversion project under what conditions
Which kind of method of operation be changed to.The present embodiment goes conversion operation mode mainly for the regulation under water diversion project emergency operating condition.Generally
For, the emergency regulation of water diversion project can be divided into the combined regulating of accident section and accident section upstream and downstream 3 regions of section.If adjusted
Serious burst water pollution accident has occurred in Hydraulic Projects somewhere, and two check gate of accident section needs lock dead；Upstream section bleeder maintains
Normal water supply, but check gate flow needs to reduce；Tract maintains a period of time to supply water using slot storage capacity.If intake area some
Severe drought event has occurred in region, and the bleeder of accident section then needs to increase and supply water；Upstream section bleeder maintains normal water supply, but
Check gate flow needs to increase；Tract bleeder maintains normal water supply.Therefore, accident section Upstream section divides water under emergency regulation
Mouth normal water supply, but canal pond flow can become larger or become smaller suddenly, be analyzed using hydraulic model, if maintaining original fortune
Line mode is regulated and controled, the problem uncoordinated with emergency demand that occur that water flow Response and restoring characteritics are poor, storage capacity is regulated and stored, then can be with
Conversion operation mode is gone in consideration.
1. the method for operation of water diversion project is ordinary water level (Fig. 3) before lock: if Upstream section canal pond flow needs to reduce suddenly,
It so maintains before lock ordinary water level just to need to reduce canal pond storage capacity to cause to abandon water and water flow to restore to stablize the time long, can examine at this time
Worry is converted to isometric method of operation (Fig. 4)；If Upstream section canal pond flow needs to increase suddenly, ordinary water level before lock is maintained
Just needing to increase canal pond storage capacity, poor, storage capacity that there is no water flow Response and restoring characteritics is regulated and stored the problem uncoordinated with emergency demand,
Without conversion operation mode.
2. the method for operation of water diversion project is ordinary water level (Fig. 5) after lock: if Upstream section canal pond flow needs to reduce suddenly,
So ordinary water level after lock is maintained just to need to increase canal pond storage capacity, the demand reduced with flow is on the contrary, at this time just it is contemplated that being converted to
Isometric method of operation；If Upstream section canal pond flow needs to increase suddenly, ordinary water level after lock is maintained just to need to reduce canal
Pond storage capacity, the demand increased with flow is on the contrary, at this time also it is contemplated that being converted to isometric method of operation.
3. the method for operation of water diversion project is isometric operation: when changes in flow rate, water surface curve is nearby revolved around canal section midpoint
Turn, keeps canal section midpoint water level constant.It runs it is often required that the upstream and downstream gate simultaneously operating of canal section passes in and out to adjust canal section
Water, to guarantee the storage capacity constant volume in canal pond.If Upstream section canal pond flow needs to be decreased or increased suddenly, capacity are waited
The method of operation can rapidly change the flow condition of entire canal system, avoid too long time-lag, because of the total Water in canal system
It does not significantly change.It is therefore not necessary to conversion operation mode.
4. the method for operation of water diversion project be control storage capacity operation (Fig. 6): the position of water level fixed point be it is uncertain, by
It is constrained in no water level or storage capacity, then can make full use of in canal section can regulate and store volume storage or supply certain water body, make canal system operation
Cope with biggish changes in flow rate range.The operational mode flexibility is higher, to all kinds of normal and urgent operation operating condition sound
Answer speed and adaptability stronger.It is therefore not necessary to conversion operation mode.But control storage capacity operation algorithm is complicated, it is extremely difficult to realize.
It to sum up analyzes, if the conventional operation mode of water diversion project is ordinary water level after ordinary water level or lock before lock, is meeting an urgent need
It can be led to the problem of when regulation and be difficult to stable, can switch to isometric method of operation, improve waterpower Response and restoring characteritics, and compared with
Easily realize.
3) whether judgement has the step of switch condition: for judge water diversion project before lock after ordinary water level or lock often
Whether water level is transformed into isometric method of operation feasible.Conversion operation mode mainly meets an urgent need regulation by gate to implement, but answers
Anxious regulation necessarily causes the fluctuation of canal pool water level, then the gate regulation and control scheme of selection conversion operation mode then needs to meet two items
Part:
A. the fluctuating procession of the water level water flow is not overflowed, that is, requires water level maximum value lower than crest elevation of levee, it may be assumed that
Δhmax≤ΔHmax (4)
In formula: Δ hmaxWith Δ HmaxThe maximum value of each canal pool water level fluctuation and channel allow water in emergency regulation process respectively
The maximum value of position fluctuation
B. after water body is stablized, water level control point, which rises or falls amplitude, should be no more than limiting value, it may be assumed that
ΔhT, max≤ΔHT, max (5)
In formula: Δ hT, maxWith Δ HT, maxThe respectively canal pool water level control point actual value and maximum that rise or fall amplitude
Value.
Different gate regulation and control schemes has different waterpower response processes, carries out mould to each scheme using hydraulic model
It is quasi-, meet the operating gate scheme of above-mentioned two condition if it exists, then it is feasible that explanation, which is converted to isometric mode,.
The step of conversion operation mode: for formulating the regulation measure of water diversion project conversion operation mode.Under conventional
When trip ordinary water level or upstream ordinary water level water level switch to isometric method of operation, need to maintain (Fig. 7) slot in the canal pond of regulation front and back
Storage capacity is constant.And the operation (Fig. 8) of upper and lower check gate (or bleeder) can only be relied on by regulating and controlling method then, i.e., to determine that gate starts
Time (the T of operation0) and gate by initial flow (Q0) it is adjusted to later and decadent stage of a school of thought amount (Q1) needed for time (T1-T0), because gate
Initial flow (Q0) and later and decadent stage of a school of thought amount (Q1) can be known in advance.
From water balance:
V1=V0+Vup-Vdown-Vd (6)
In formula: V0And V1The initial storage capacity and last current state storage capacity in respectively a certain canal pond, can be by hydraulic model in step 1)
It is calculated；VupAnd VdownRespectively water of the upper and lower check gate in canal pond in regulation process inflow, outflow canal pond；VdFor this
Canal pond in regulation process bleeder (exit sluice) point (moving back) water.
Make regulation front and back canal pond inside groove storage capacity constant, it may be assumed that
V1=V0 (7)
So just there is following relationship:
Vup-Vdown-Vd=0 (8)
It wherein, can approximate calculation:
Finally it should be noted that being only used to illustrate the technical scheme of the present invention and not to limit it above, although referring to preferable cloth
The scheme of setting describes the invention in detail, those skilled in the art should understand that, it can be to technology of the invention
Scheme (such as the sequencing of step, the setting of constraint condition, parameter value range etc.) is modified or replaced equivalently, and
The spirit and scope of technical solution of the present invention are not departed from.
Claims (3)
1. a kind of water diversion project method of operation conversion method, which comprises the following steps:
1) it establishes lock pump group and regulates and controls lower hydraulical simulation model:
Water diversion project steady flow and unsteady flow process are simulated, to carry out the calculating of water diversion project canal water upper thread and storage capacity, lock
Pump the sunykatuib analysis that group regulates and controls lower channel waterpower response process；One-dimensional hydraulic model is constructed, to check gate, bleeder, the rainbow that falls
It inhales, the Internal architecture object of open channel progress generalizing processing, the good interior building of generalization is coupled with Saint-venant Equations, together
4 space-time bias formats of Shi Caiyong Preissmann are discrete to equation group progress, solved with double-sweep method；
2) which kind of water diversion project method of operation judgement selects:
If the conventional operation mode of water diversion project is that ordinary water level, accident section Upstream section are adjusted in emergency after ordinary water level or lock before lock
Lower bleeder normal water supply is controlled, canal pond flow is become larger or is become smaller suddenly, analyzed using the hydraulical simulation model of step 1),
Original method of operation is maintained to be regulated and controled, it is uncoordinated with emergency demand to occur that water flow Response and restoring characteritics are poor, storage capacity is regulated and stored
The problem of, then it can enter step and 3) judge whether the condition with isometric method of operation is converted to；
3) judge whether have the step of switch condition:
Mould is carried out to each gate regulation and control scheme in the way of the water diversion project conversion operation by the hydraulical simulation model of step 1)
It is quasi-, meet the gate regulation and control scheme of following two condition if it exists, then it is feasible that explanation, which is converted to isometric method of operation:
A. the fluctuating procession of the water level water flow is not overflowed, it is desirable that water level maximum value is lower than crest elevation of levee, it may be assumed that
Δhmax≤ΔHmax, in which: Δ hmaxWith Δ HmaxThe maximum value of each canal pool water level fluctuation of meeting an urgent need in regulation process respectively and
The maximum value of channel permission water-level fluctuation；
B. after water body is stablized, water level control point, which rises or falls amplitude, should be no more than limiting value, it may be assumed that
ΔhT, max≤ΔHT, max, in which: Δ hT, maxWith Δ HT, maxThe respectively canal pool water level control point reality that rises or falls amplitude
Actual value and maximum value；
4) conversion operation mode: carrying out operating gate, and the ordinary water level method of operation after the ordinary water level method of operation before lock or lock is turned
It is changed to isometric method of operation.
2. water diversion project method of operation conversion method according to claim 1, which is characterized in that unsteady flow in step 1)
It calculates and uses one-dimensional Saint-venant Equations, the equation is made of continuity equation and the equation of momentum:
In formula: x and t is respectively room and time coordinate；Q is the flow that laterally becomes a mandarin on unit length channel；α is momentum amendment
Coefficient；Q is section flow；A is section discharge area；Z is water level；SfFor hydraulic gradient；S0For channel bottom sloping；G adds for gravity
Speed；
In formula: K is hydromodulus；
Enable the time term in formula (1)WithIt is 0, then obtains steady flow calculating formula:
Formula (3) is solved with the discrete scheme of formula (1) and numerical computation method, unsteady flow is made to converge to corresponding perseverance
In constant current, i.e., constant stream calculation and unsteady flow calculate and meet " compatibility " criterion.
3. water diversion project method of operation conversion method according to claim 1, which is characterized in that step 4) conversion operation side
The regulation method of formula determines that gate starts the time T of operation by the operation of upper and lower check gate or bleeder0With gate by initial
Flow Q0It is adjusted to later and decadent stage of a school of thought amount Q1Required time T1-T0；The upper and lower check gate in canal pond is calculated and flows into canal in regulation process
The water V in pondup, outflow canal pond water Vdown；And the canal pond in regulation process bleeder or exit sluice point or water-break amount
Vd。
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| CN109765942A (en) * | 2019-03-04 | 2019-05-17 | 中南大学 | Water level of open channel control method based on input and output feedback and generalized predictive control |
| CN111125631A (en) * | 2019-09-26 | 2020-05-08 | 深圳市东深电子股份有限公司 | Water resource calculation scheduling method based on target water level and flow |
| CN111783369A (en) * | 2020-07-22 | 2020-10-16 | 中国水利水电科学研究院 | Short-term multi-objective optimization scheduling method for multi-gate-group open channel water transfer project |
| CN111931377A (en) * | 2020-08-14 | 2020-11-13 | 中国水利水电科学研究院 | Pump-gate combined regulation and control method for long-distance non-pressure water delivery tunnel |
| CN112989607A (en) * | 2021-03-17 | 2021-06-18 | 中国水利水电科学研究院 | Emergency regulation and control method for water outlet gate of open channel water delivery project accident section |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109765942A (en) * | 2019-03-04 | 2019-05-17 | 中南大学 | Water level of open channel control method based on input and output feedback and generalized predictive control |
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| CN111783369B (en) * | 2020-07-22 | 2024-01-26 | 中国水利水电科学研究院 | Short-term multi-objective optimal scheduling method for multi-gate-group open channel water diversion project |
| CN111931377A (en) * | 2020-08-14 | 2020-11-13 | 中国水利水电科学研究院 | Pump-gate combined regulation and control method for long-distance non-pressure water delivery tunnel |
| CN111931377B (en) * | 2020-08-14 | 2023-11-14 | 中国水利水电科学研究院 | Pump gate joint regulation and control method for long-distance pressureless water delivery tunnel |
| CN112989607A (en) * | 2021-03-17 | 2021-06-18 | 中国水利水电科学研究院 | Emergency regulation and control method for water outlet gate of open channel water delivery project accident section |
| CN112989607B (en) * | 2021-03-17 | 2023-08-29 | 中国水利水电科学研究院 | Emergency regulation and control method for open channel water delivery engineering accident section water return gate |
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