CN108252276A - A kind of plant without storage's automatic optimization method based on adjusting of contributing - Google Patents
A kind of plant without storage's automatic optimization method based on adjusting of contributing Download PDFInfo
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- CN108252276A CN108252276A CN201810133948.2A CN201810133948A CN108252276A CN 108252276 A CN108252276 A CN 108252276A CN 201810133948 A CN201810133948 A CN 201810133948A CN 108252276 A CN108252276 A CN 108252276A
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- 238000005457 optimization Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 230000003247 decreasing effect Effects 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000011160 research Methods 0.000 description 9
- 238000010248 power generation Methods 0.000 description 4
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- 238000004364 calculation method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
A kind of plant without storage's automatic optimization method based on adjusting of contributing provided by the invention, for the plant without storage of 2 units, by carrying out output adjusting between unit, on the basis of ensureing that power station goes out dynamic balance, by adjusting, total water consumption rate in power station is reduced, the water consumption of reduction is averagely allocated to unit later, the increase of unit output is realized, improves the on-road efficiency and water resource utilization efficiency in power station.
Description
Technical field
The present invention relates to power station optimizations, and in particular to a kind of Automatic Optimal side of plant without storage based on adjusting of contributing
Method.
Background technology
Important energy source component part of the waterpower resourses as China, the superiority for having other energy irreplaceable, rationally
Develop and be the inevitable choice readjusted the energy structure and the good approach of the Implement of sustainable development strategy using waterpower resourses.
As deepening continuously for research theory is constantly improve with scientific and technological level, the utilization ratio of water resource is increased dramatically, especially
It is in large hydropower station, optimization operation and the research of scheduling theory reach its maturity, and pass through the actual motion mistake in power station
Implement Optimized Operation in journey, achieve preferable operational effect.Large hydropower station common engineering scale and installed capacity are larger, single
A power station proportion in power grid is larger, generally by power grid United Dispatching and allotment, therefore, attention degree, throwing in research
All comparatively fully, achievement in research is relatively more for the manpower and materials entered, all opposite in terms of theoretical foundation and practical application
Comparative maturity.And small hydropower station is for a long time, less input for attention degree, the research funding being subject to due to it, to miniature water
The research of the optimization operation in power station be also only limitted to some sporadicly and limited research, corresponding achievement in research more zero
It dissipates, and is difficult to be applied in the actual motion in power station.
Data shows that power station is carried out optimization operation and compared with optimization operation is not carried out, and can usually improve generated energy 2
~10%, the ratio that small hydropower station increases generated energy is opposite some higher, small hydropower station total installation of generating capacity and average annual power generation
Amount occupies larger specific gravity in HYDROELECTRIC ENERGY structure, and small power station is constrained by objective condition at present, and operational efficiency is generally relatively low.Cause
The basic theory for small hydropower station optimization operation is improved in the economical operation in this research power station, small-sized what is satisfied the requirements
Optimization operation is realized in power station as far as possible, increases the generated energy of water power, seriously polluted traditional energy is substituted with clean energy resource,
With significant ecological benefits and social benefit.
Plant without storage is the common form of small hydropower station, and shared large percentage, this in China power station
Power station does not often have regulation performance, is generated electricity using natural runoff.Due to lacking the management of science, often lead to
Power station is difficult to effectively adjust, so as to realize optimization operation.Especially once booting operation, does not often consider further that
Optimization, and due to the difference of unit assignment of traffic, also there are certain optimization spaces, this is for Rational Decision and improves water money
Source utilization ratio plays an important roll.
Invention content
The present invention provides a kind of Automatic Optimal side of plant without storage based on adjusting of contributing for problem of the prior art
Method.
The present invention provides a kind of plant without storage's automatic optimization method based on adjusting of contributing, and the plant without storage is extremely
Include forebay, conduit pipe, turbine-generator units and governor less, detection forebay is provided on the forebay
The water-level gauge of water level, the governor are used to control the output of turbine-generator units, and the number of units of the turbine-generator units is 2
Platform, number is No. 1 unit, No. 2 units respectively, and when 2, power station, unit is run simultaneously, and when the water level of the frontal pool is constant, power station
Power generation reference flow is equal to the practical incoming in power station, performs following optimization method at this time：
S1：The output of No. 1 unit is increased, and reduce output, institute using the governor of No. 2 units by the governor of No. 1 unit
It is equal with the output that No. 2 units reduce to state the increased output of No. 1 unit, detects forebay using the water-level gauge at this time
Water level；
S2：The step S2 includes the following steps S21, S22, S23；
S21：If the water level for the forebay that step S1 is detected goes up, illustrate that power station reference flow is less than the reality in power station
Border incoming at this point, continuing the output of No. 1 unit of increase by the governor of No. 1 unit, and is subtracted using the governor of No. 2 units
Small output, the increased output of No. 1 unit is equal with the output that No. 2 units reduce, and performs adjustment until the pressure
The water level of the frontal pool declines, the output at this time once adjusting No. 1 unit on the water level of the frontal pool decline is corresponding with No. 2 unit allocations
Value；
S22：If the water level decreasing for the forebay that step S1 is detected, illustrate that power station reference flow is more than the reality in power station
Border incoming at this point, the governor by No. 1 unit reduces the output of No. 1 unit, and is gone out using the governor increase of No. 2 units
Power, the output that No. 1 unit reduces is equal with the increased output of No. 2 units, if the water level of the frontal pool increases, performs adjustment
Until the forebay water level decreasing, primary the water level of the frontal pool decline is corresponding with No. 2 unit allocations by No. 1 unit at this time
The power generating value of adjustment；
S23：If the water level for the forebay that step S1 is detected is constant, do not continue to perform adjustment；
S3：After performing step S2, forebay water level increases, and obtains the increased water level of forebay, and utilize forebay
Water level storage-capacity curve calculate increased water value, obtain forebay water level increased average time, increased using forebay
Calais's water divided by the average time obtain the average increase flow of forebay；
S4：By the average increase flow in step S3 according to being averagely allocated to No. 1 unit and No. 2 units calculate No. 1 units and No. 2
No. 1 unit and No. 2 increased power generating values of unit are distributed to described 1 by the increased power generating value of unit respectively by governor
Number unit and No. 2 units, complete the optimal control in power station.
Preferably, the power generating value increasedd or decreased that No. 1 unit, No. 2 units adjust every time is identical.
Preferably, the power generating value increasedd or decreased that No. 1 unit, No. 2 units adjust every time is hydrogenerator
The 2% of group nominal output.
The advantage of the invention is that：
A kind of plant without storage's automatic optimization method based on adjusting of contributing provided by the invention, for the runoff of 2 units
Formula power station by carrying out output adjusting between unit, on the basis of ensureing that power station goes out dynamic balance, by adjusting, subtracts
Small total water consumption rate in power station, is averagely allocated to unit by the water consumption of reduction later, realizes the increase of unit output, improve
The on-road efficiency and water resource utilization efficiency in power station.
Specific embodiment：The present invention is specifically illustrated, and to its theoretical foundation and how in water power below
Operation is carried out in standing and carries out necessary explanation.
The present invention provides a kind of plant without storage's automatic optimization method based on adjusting of contributing, and the plant without storage is extremely
Include forebay, conduit pipe, turbine-generator units and governor less, detection forebay is provided on the forebay
The water-level gauge of water level, the governor are used to control the output of turbine-generator units, and the number of units of the turbine-generator units is 2
Platform, number is No. 1 unit, No. 2 units respectively, and when 2, power station, unit is run simultaneously, and when the water level of the frontal pool is constant, power station
Power generation reference flow is equal to the practical incoming in power station, performs following optimization method at this time：
S1：The output of No. 1 unit is increased, and reduce output, institute using the governor of No. 2 units by the governor of No. 1 unit
It is equal with the output that No. 2 units reduce to state the increased output of No. 1 unit, detects forebay using the water-level gauge at this time
Water level；
S2：The step S2 includes the following steps S21, S22, S23；
S21：If the water level for the forebay that step S1 is detected goes up, illustrate that power station reference flow is less than the reality in power station
Border incoming at this point, continuing the output of No. 1 unit of increase by the governor of No. 1 unit, and is subtracted using the governor of No. 2 units
Small output, the increased output of No. 1 unit is equal with the output that No. 2 units reduce, and performs adjustment until the pressure
The water level of the frontal pool declines, the output at this time once adjusting No. 1 unit on the water level of the frontal pool decline is corresponding with No. 2 unit allocations
Value；
S22：If the water level decreasing for the forebay that step S1 is detected, illustrate that power station reference flow is more than the reality in power station
Border incoming at this point, the governor by No. 1 unit reduces the output of No. 1 unit, and is gone out using the governor increase of No. 2 units
Power, the output that No. 1 unit reduces is equal with the increased output of No. 2 units, if the water level of the frontal pool increases, performs adjustment
Until the forebay water level decreasing, primary the water level of the frontal pool decline is corresponding with No. 2 unit allocations by No. 1 unit at this time
The power generating value of adjustment；
S23：If the water level for the forebay that step S1 is detected is constant, do not continue to perform adjustment；
S3：After performing step S2, forebay water level increases, and obtains the increased water level of forebay, and utilize forebay
Water level storage-capacity curve calculate increased water value, obtain forebay water level increased average time, increased using forebay
Calais's water divided by the average time obtain the average increase flow of forebay；
S4：By the average increase flow in step S3 according to being averagely allocated to No. 1 unit and No. 2 units calculate No. 1 units and No. 2
No. 1 unit and No. 2 increased power generating values of unit are distributed to described 1 by the increased power generating value of unit respectively by governor
Number unit and No. 2 units, complete the optimal control in power station.
Preferably, the power generating value increasedd or decreased that No. 1 unit, No. 2 units adjust every time is identical.
Preferably, the power generating value increasedd or decreased that No. 1 unit, No. 2 units adjust every time is hydrogenerator
The 2% of group nominal output.
When wherein step S3 is realized, water-level gauge carries clocking capability, when performing step S1, obtains time point t1, water level
H1 at the end of step S2, obtains time point t2, water level h2, inquires the water level storage-capacity curve of the forebay, utilize water level
H1, h2 obtain storage capacity V1, the V2 of forebay, then averagely increase flow described in step S3 as (V1-V2)/(t2-t1)
In step S4, it will averagely increase flow described in step S3 and be divided into 2 units, then according to forebay water level, water
Before the efficiency curve of turbine, tail water pool water level calculate step S1 according to power station pipe arrangement form, generator efficiency etc.
Before adjustment is contributed, then the corresponding reference flow of corresponding two units of power generating value is added using the reference flow of two units
The upper flow rate calculation of dividing equally for averagely increasing flow is contributed, and the output of be calculated No. 1 unit, No. 2 units is passed through
Governor adjusts；
Preferably, turbine-generator units carry current surveying device, the practical reference stream of 2, power station unit is detected before step S1
Amount, step S2 obtain the practical reference flow of 2, power station unit later, then obtain the practical reduction flow in power station, will
The reduction flow is averagely allocated to 2 units, using forebay water level, the efficiency curve of the hydraulic turbine, tail water pool water level according to
The additional issue that power station pipe arrangement form, generator efficiency etc. calculate two units is contributed, and by be calculated No. 1 unit, 2
The output of number unit is adjusted by governor.
The present invention theoretical foundation be：
Optimize operating energy loss in factory and have ignored error usually in accordance with water turbine set and the theoretical characteristics of power station flow channels
Influence, theoretical optimal case is caused not to be consistent with actual motion.The error mainly has the constant error of machine unit characteristic, data to adopt
Collection and parameter choose error and calculate error etc..
For turbine-generator units, operating point is different, then the efficiency of the hydraulic turbine can differ larger, optimize in Hydroelectric Plant
When operation calculates, although each individual error can not be obtained accurately, each individual error to form comprehensive mistake by transmitting, being superimposed
Difference.Composition error can not only make the actual efficiency curved surface of the hydraulic turbine in vertical direction deviation, relative to theoretical operating point, practical work
Condition point can be also subjected to displacement in the horizontal direction（That is the efficiency surface of the hydraulic turbine）.
Meanwhile during an only unit operation, even only operating point changes due to error, the efficiency of the hydraulic turbine is bent
Face can also translate, and making actual efficiency value and theoretical efficiency value, there are deviations, eventually lead to theoretially optimum value not necessarily
Practical optimal value；Operation is simultaneously participated in for more units, power station participates in existing in the climatic conditioning main plot of operating unit
Theoretical curved surface, due to the presence of composition error during actual motion, the overall efficiencies of more units is in the vertical and water of theoretical curved surface
Square to can also generate displacement, eventually leading to theoretical optimization result and actual motion, there are deviations, and this deviation is also larger sometimes.
The present invention proposes to establish the Automatic Optimal mechanism based on control of contributing, and when unit operation is adjusted in real time, realization
The feedback closed loop control of optimization, to reduce deviation existing for theoretical calculation and actual motion.Its basic thought is to meet to contribute to put down
Under the conditions of weighing apparatus, appropriate disturbance is given to the optimal operating condition point of unit theory scheme, faces search actual optimum operating mode in domain at it
Point（Face domain range to require to set according to available accuracy）.
For 2 units, the gross capability of 2 units and the reference flow of 2 units have functional relation, to wherein
1 unit increases certain output, and another 1 unit is reduced and is centainly contributed, and gross capability is constant, but due to going out between unit
Power changes, and head loss, turbine efficiency also can therefore change, and at this moment inevitably results in unit reference stream quantitative change
Change, due to 2 units, optimal output（That is maximum output）The monotonic function of flow is quoted for wherein some unit（It is another
Platform unit can subtract the flow of known unit with total flow）, i.e., if adjustment direction is correct, the output meeting one of 2 units
Directly in monotonic relationshi, this is available for those skilled in the art, and theoretical foundation is power station optimum theory, error point
Analysis is theoretical and monotonic function is theoretical.
I.e. if performing primary adjustment, if water consumption rate reduces, illustrate also there are certain optimization space, if water consumption rate increases
Add, then illustrate adjustment direction mistake, adjustment direction should be changed at this time, water consumption rate then reduces.
Optimal way provided by the invention can under monitoring and control of hydropower station platform automatically implement, dynamic adjust, solve due to
Offset issue caused by theoretical characteristics and actual conditions are not inconsistent, be to the in-plant economical operation model based on control of contributing must
It supplements and corrects, further excavated power generation potentiality.
The above embodiment is only the preferred embodiment of the present invention, and protection scope of the present invention is not construed as only limiting
In the concrete form that embodiment is stated, protection scope of the present invention also includes those skilled in the art according to present inventive concept institute
It is conceivable that equivalent technologies mean.
Claims (3)
1. a kind of plant without storage's automatic optimization method based on adjusting of contributing, before which includes at least pressure
Pond, conduit pipe, turbine-generator units and governor are provided with the water level of detection forebay water level on the forebay
Meter, the governor are used to control the output of turbine-generator units, and the number of units of the turbine-generator units is 2, is numbered respectively
For No. 1 unit, No. 2 units, when 2, power station, unit is run simultaneously, and when the water level of the frontal pool is constant, hydropower station reference flow
Equal to the practical incoming in power station, following optimization method is performed at this time：
S1：The output of No. 1 unit is increased, and reduce output, institute using the governor of No. 2 units by the governor of No. 1 unit
It is equal with the output that No. 2 units reduce to state the increased output of No. 1 unit, detects forebay using the water-level gauge at this time
Water level；
S2：The step S2 includes the following steps S21, S22, S23；
S21：If the water level for the forebay that step S1 is detected goes up, illustrate that power station reference flow is less than the reality in power station
Border incoming at this point, continuing the output of No. 1 unit of increase by the governor of No. 1 unit, and is subtracted using the governor of No. 2 units
Small output, the increased output of No. 1 unit is equal with the output that No. 2 units reduce, and performs adjustment until the pressure
The water level of the frontal pool declines, the output at this time once adjusting No. 1 unit on the water level of the frontal pool decline is corresponding with No. 2 unit allocations
Value；
S22：If the water level decreasing for the forebay that step S1 is detected, illustrate that power station reference flow is more than the reality in power station
Border incoming at this point, the governor by No. 1 unit reduces the output of No. 1 unit, and is gone out using the governor increase of No. 2 units
Power, the output that No. 1 unit reduces is equal with the increased output of No. 2 units, if the water level of the frontal pool increases, performs adjustment
Until the forebay water level decreasing, primary the water level of the frontal pool decline is corresponding with No. 2 unit allocations by No. 1 unit at this time
The power generating value of adjustment；
S23：If the water level for the forebay that step S1 is detected is constant, do not continue to perform adjustment；
S3：After performing step S2, forebay water level increases, and obtains the increased water level of forebay, and utilize forebay
Water level storage-capacity curve calculate increased water value, obtain forebay water level increased average time, increased using forebay
Calais's water divided by the average time obtain the average increase flow of forebay；
S4：By the average increase flow in step S3 according to No. 1 unit and No. 2 units is averagely allocated to, No. 1 unit and 2 is calculated
Number increased power generating value of unit is respectively distributed to No. 1 unit and No. 2 increased power generating values of unit by governor described
No. 1 unit and No. 2 units, complete the optimal control in power station.
2. a kind of plant without storage's automatic optimization method based on adjusting of contributing as described in claim 1, it is characterised in that：
The power generating value increasedd or decreased that No. 1 unit, No. 2 units adjust every time is identical.
3. a kind of plant without storage's automatic optimization method based on adjusting of contributing as described in claim 1, it is characterised in that：
The power generating value increasedd or decreased that No. 1 unit, No. 2 units adjust every time is the 2% of turbine-generator units nominal output.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110705784A (en) * | 2019-09-29 | 2020-01-17 | 河南郑大水利科技有限公司 | Optimized operation evaluation method for radial flow type hydropower station |
| CN111321713A (en) * | 2019-06-19 | 2020-06-23 | 河南郑大水利科技有限公司 | Hydropower station unit operation method based on ecological flow |
| CN111738625A (en) * | 2020-07-21 | 2020-10-02 | 河南郑大水利科技有限公司 | High-water-level operation method for front pool of radial-flow hydropower station |
| CN111738626A (en) * | 2020-07-22 | 2020-10-02 | 河南郑大水利科技有限公司 | Starting method and system of radial flow type hydropower station |
| CN111832830A (en) * | 2020-07-21 | 2020-10-27 | 河南郑大水利科技有限公司 | Tail water level-based big data optimization operation method for radial flow type hydropower station |
| CN111832829A (en) * | 2020-07-21 | 2020-10-27 | 河南郑大水利科技有限公司 | Reservoir hydropower station optimized operation method based on big data |
| CN111859823A (en) * | 2020-07-22 | 2020-10-30 | 河南郑大水利科技有限公司 | Method and system for determining starting of radial flow type hydropower station according to incoming flow |
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| CN103545817A (en) * | 2013-09-24 | 2014-01-29 | 许继集团有限公司 | Automatic power generation control method for cascade hydropower stations |
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| CN1162697A (en) * | 1997-02-04 | 1997-10-22 | “列宁格勒金属工厂”股份公司 | Combined hydro-generators of hydroelectric stations |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111321713A (en) * | 2019-06-19 | 2020-06-23 | 河南郑大水利科技有限公司 | Hydropower station unit operation method based on ecological flow |
| CN111321713B (en) * | 2019-06-19 | 2021-05-11 | 河南郑大水利科技有限公司 | Hydropower station unit operation method based on ecological flow |
| CN110705784B (en) * | 2019-09-29 | 2023-04-07 | 河南郑大水利科技有限公司 | Optimized operation evaluation method for radial flow type hydropower station |
| CN110705784A (en) * | 2019-09-29 | 2020-01-17 | 河南郑大水利科技有限公司 | Optimized operation evaluation method for radial flow type hydropower station |
| CN111738625A (en) * | 2020-07-21 | 2020-10-02 | 河南郑大水利科技有限公司 | High-water-level operation method for front pool of radial-flow hydropower station |
| CN111832830A (en) * | 2020-07-21 | 2020-10-27 | 河南郑大水利科技有限公司 | Tail water level-based big data optimization operation method for radial flow type hydropower station |
| CN111832829A (en) * | 2020-07-21 | 2020-10-27 | 河南郑大水利科技有限公司 | Reservoir hydropower station optimized operation method based on big data |
| CN111738625B (en) * | 2020-07-21 | 2024-02-20 | 河南郑大水利科技有限公司 | High water level operation method for front pool of radial hydropower station |
| CN111832830B (en) * | 2020-07-21 | 2022-12-16 | 河南郑大水利科技有限公司 | Tail water level-based big data optimization operation method for radial flow type hydropower station |
| CN111738626A (en) * | 2020-07-22 | 2020-10-02 | 河南郑大水利科技有限公司 | Starting method and system of radial flow type hydropower station |
| CN111738626B (en) * | 2020-07-22 | 2023-07-14 | 云南大唐国际李仙江流域水电开发有限公司 | Starting method and system for radial hydropower station |
| CN111859823B (en) * | 2020-07-22 | 2023-10-17 | 河南郑大水利科技有限公司 | Method and system for determining starting-up of radial hydropower station according to incoming flow |
| CN111859823A (en) * | 2020-07-22 | 2020-10-30 | 河南郑大水利科技有限公司 | Method and system for determining starting of radial flow type hydropower station according to incoming flow |
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| CN108252276B (en) | 2019-10-29 |
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