CN104594282A - Reservoir operation dispatching diagram drawing method - Google Patents
Reservoir operation dispatching diagram drawing method Download PDFInfo
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- CN104594282A CN104594282A CN201410565325.4A CN201410565325A CN104594282A CN 104594282 A CN104594282 A CN 104594282A CN 201410565325 A CN201410565325 A CN 201410565325A CN 104594282 A CN104594282 A CN 104594282A
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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
Abstract
The invention discloses a reservoir operation dispatching diagram drawing method. The method comprises the following steps that 1, a conventional method is used for calculating breakage-proof water levels or water volumes, limited force discharge/water supply water levels or water volumes and abandoned water levels or water volumes in all time periods over the years; 2, the breakage-proof water levels or water volumes, the limited force discharge/water supply water levels or water volumes and the abandoned water levels or water volumes in all the time periods over the years are ranked; 3, a breakage-proof line, a limited force discharge/water supply line and an abandoned water line corresponding to the design dependability are extracted. According to the method, calculation is conducted year by year and time period by time period on the basis of inflow runoff length sequence data, and therefore the problem that dispatching diagrams drawn by different designers are different due to the fact that typical years and the selected number of years differ from person to person when calculation is conducted through a traditional typical year method is solved; meanwhile, all the time periods in all years are calculated, so the problem that a broken year is completely removed through a broken year removing method, and accordingly the number of water supply guarantee rate samples in all the time periods of the broken year is reduced is solved.
Description
Technical field
the present invention relates to a kind of reservoir capacity adjustment drawing drawing method, belong to reservoir operational management skill field.
Background technology
multiple purpose reservoir working condition and reservoir become a mandarin closely related, and natural river flow changes often more complicated, and at present because scientific level limit, can't forecast with unerring accuracy following long-period runoff process, and this has carried out very large difficulty just to reservoir operating band.In order to reasonably dam safety evaluation can be carried out, safe and reliable basis makes full use of water resource, in the objective criteria that run duration needs a reservoir of planning strategies for store, discharge water, Here it is application graph of reservoir operation starting point.Graph of reservoir operation is the instrument instructing year or carry-over storage to run, and its supposition Streamflow Data in the past reflects following hydrologic regime, and utilization lasts Streamflow Data drafting and forms.
utilize scheduling graph to carry out reservoir operation, start from the twenties in 20th century, by Soviet Union scholar
vladimir Morozov proposes, and is still widely used so far.It adopts to last Streamflow Data and carry out regulating calculation, partially solve the scope of application of various scheduling scheme safely, namely for same decision-making (as assure feed water or increasing, reduction are supplied water), be required scheduling line with the outer envelope curve of the various reservoir level that may occur of the hydrologic regime of respective respective design fraction, and form scheduling graph by them.Carry out reservoir operation according to scheduling graph, can reach: when meeting with design low flow year, reservoir, by ensureing method of operation work, can ensure the requirement of the normal water requirement of each water user and water level; When meeting with flat, high flow year, reservoir can be undertaken by increasing way of supplying water, more reasonably can strengthen the output to each water user; When meeting with the special low flow year, reservoir, by reducing way of supplying water work, more reasonably can reduce the output of each water user, to alleviate the normal benefit of each water user and the loss of energy that disappears; When meeting with design flood or check standard flood flood season, can ensure that dam safety is passed the flood period, or meet with downstream flood control standard flood, the flood control requirement of sheltered ground can be met.
graph of reservoir operation is made up of several water levels or water retention capacity graph, and have tamper-proof scheduling line, prevent abandoning water scheduling line, flood control dispatching line etc., these scheduling bundle of lines scheduling graphs are divided into several dispatch area.When reservoir level or water retention capacity drop on certain district, just discharge water by this district's defined quantity.
one, the method for drafting of current annual-storage reservoir scheduling graph
1, the drafting of tamper-proof line
according to the statistics of reservoir run-off, select year water yield or delivery period the water yield to become a mandarin process close to the typical case distributed different in several years of design dependability Po, and by the year water yield or delivery period water rate control correction of respective design fraction, namely by certain ratio, the runoff process of each Typical Year is carried out reducing or amplifying, make they year the water yield or delivery period the water yield equal the analog value in design dependability time.Then from the water supply end of term by level of dead water, carry out the runoff regulation of inverse time sequence, obtain to the retaining beginning by the water retention capacity at the beginning of the period or water level, require that the initial water level of retaining equals level of dead water.In Extrapolation process, when water storage level reaches normal pool level, reservoir is by natural reservoir inflow work.The upper envelope curve getting each year reservoir level process is tamper-proof line.Also can reject and destroy all Fuzzy Period of Runoff Series (not carrying out control convergent-divergent) after the time, as stated above Extrapolation year by year, get the upper envelope curve of reservoir level process over the years, be tamper-proof line.
, forced partial outage/supply line drafting
the tamper-proof line similar approach of forced partial outage/supply line is inquired into, and up time sequence carries out regulating calculation, and draw each year reservoir filling process, then taking off envelope curve is exactly forced partial outage/supply line.
, anti-drafting of abandoning waterline
according to two Phase flow quantitative statistics data, the fraction of year water yield or the wet season water yield is selected to be the typical two Phase flow process of 1-Po, power station discharges water by maximum discharge capacity or by installed capacity work, from the retaining end of term by normal pool level, inverse time sequence is counter pushes away each moon reservoir level, to reaching normal pool level in delivery period, the reservoir level connecting day part is to be prevented abandoning waterline.Power station with good conditionsi, can calculate a series of actual measurement according to said method water year, but should not comprise year water yield these years and be greater than the time water yield that fraction is 1-Po, then gets the interior envelope curve of each year reservoir level, is anti-ly to abandon waterline.
two, the method for drafting of carry-over storage scheduling graph
1, the drafting of tamper-proof line
method one: select the time with such two Phase flow process to be the 1 calculating year, namely in this year, self-water-supplying end of term reservoir stores full overyear storage to start, inverse time sequence carries out regulating calculation, normal pool level is reached to retaining end of term reservoir level, and the initial reservoir level of the retaining that arrives just has been got back to storing of overyear storage and worked to the last minute, in hoc anno, the water yield is many, few, and the reservoir level connecting day part is tamper-proof line.If desired, can choose the disadvantageous Typical Year of several Tendency analysis, the water yield controls convergent-divergent by proper proportion, then carries out the regulating calculation of inverse time sequence, gets the upper envelope curve of each year reservoir level process, is tamper-proof line.
method two: adopt hydroelectric station design low water section two Phase flow process, self-water-supplying end of term reservoir stores full storage capacity for many years to start, and inverse time sequence carries out regulating calculation, gets the outer envelope curve of each year reservoir level graph, is tamper-proof line.
, forced partial outage/supply line drafting
method one: select the time with such two Phase flow process to be the 1 calculating year, from the water supply end of term and level of dead water, carry out inverse time sequence regulating calculation, still disappear to the initial reservoir level of retaining and drop down onto level of dead water, and the water yield is many, few in hoc anno, the reservoir level connecting day part is forced partial outage/supply line.
method two: by translation under aforementioned tamper-proof alignment, makes the initial reservoir level of the water supply end of term and retaining overlapping with level of dead water, is restriction supply line.
, anti-drafting of abandoning waterline
for the very much higher annual-storage reservoir of adjusting function, can not draw and prevent abandoning waterline, because this kind of reservoir to abandon the water yield generally little, and abandon regimen condition and mostly occur in the flood season of continuous high flow year group, and the utilization improving head can make up and abandons water and the electric quantity loss caused, therefore normal by normal pool level all to exert oneself district as increasing down to the above region of tamper-proof line.
the deficiency of conventional method: conventional method can be divided into Typical Year method and remove destroys time method when choosing runoff process.Typical Year method be select year water yield or delivery period the water yield to become a mandarin process close to the typical case distributed different in several years of design dependability Po, and by the year water yield or delivery period water rate control correction of respective design fraction, namely by certain ratio, the runoff process of each Typical Year is carried out reducing or amplifying, make they year the water yield or delivery period the water yield equal the analog value in design dependability time; Removing and destroying time method is do not carry out controlling all Fuzzy Period of Runoff Series of convergent-divergent after rejecting the destruction time.Adopt Typical Year method exist in real work to the Typical Year time, year number choose and vary with each individual, the scheduling graph difference causing different designs personnel to draw.Remove and destroy the variance analysis deficiency of time method to the fraction period, water supply project generally designs with year fraction when designing, scheduling graph then embodies day part assure feed water fraction in year, the whole year in time will be destroyed remove, likely make day part water supply fraction sample in year reduce, affect the drafting precision of day part line in scheduling graph year.
Summary of the invention
the object of the invention is to, a kind of reservoir capacity adjustment drawing drawing method is provided, to solve the deficiency of existing reservoir operation drawing drawing method.
technical scheme of the present invention:
a kind of reservoir capacity adjustment drawing drawing method, the method is drawn according to the following steps:
the first step, calculates the tamper-proof water level of day part over the years or the water yield, restriction water level or the water yield, prevents abandoning water water level or the water yield;
second step, to the tamper-proof water level of day part over the years or the water yield, restriction water level or the water yield, anti-ly abandons water water level or the water yield sorts;
3rd step, extracts corresponding tamper-proof line, restriction supply line by design dependability and prevents abandoning waterline.
in preceding method, the computational methods of the described first step belong to Runoff adjustment content, calculate according to a conventional method.
in preceding method, the sequence of described second step is by tamper-proof for day part over the years water level or the water yield, abandons water water level or the water yield from little to large sequence or sort from big to small by anti-to day part restriction water level over the years or the water yield, day part over the years.
in preceding method, the extracting method of described 3rd step is: extract by design dependability Po; Specifically tamper-proof for day part over the years water level or the water yield are formed tamper-proof line from little to couple together to longer spread and by the corresponding numerical value of design dependability Po; By day part over the years restriction water level or the water yield from little to couple together to longer spread and by the corresponding numerical value of design dependability 1-Po to form anti-ly abandon water water level or water yield line; By tamper-proof line, restriction supply line, prevent that abandoning waterline with time is abscissa, water level or the water yield are ordinate drafting pattern.
compared with prior art, the present invention calculates by the period year by year based on the long sequence data of two Phase flow, avoid traditional Typical Year method calculate in the Typical Year time, year number choose and vary with each individual, the problem that the scheduling graph causing different designs personnel to draw is different, all time day parts are all calculated simultaneously, avoid removing destruction time method and will destroy removal in the whole year in time, make the problem that in year, day part water supply fraction sample reduces.
Accompanying drawing explanation
fig. 1 is present system flow chart.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
in order to solve the deficiency of existing reservoir operation drawing drawing method, the invention provides a kind of method that graph of reservoir operation is drawn, based on the long sequence data of two Phase flow, calculate the tamper-proof water level of reservoir day part over the years or the water yield, forced partial outage/water level or the water yield according to tamper-proof line, forced partial outage/supply line, anti-waterline conventional method of abandoning, anti-ly abandon water water level or the water yield.Get the tamper-proof water level of day part over the years or the water yield from little to the corresponding numerical value of longer spread design dependability Po, connect to form tamper-proof line; Get day part over the years forced partial outage/water level or the water yield from little to the corresponding numerical value of longer spread design dependability 1-Po, connect to form forced partial outage/supply line; Get anti-water water level or the water yield of abandoning of day part over the years from little to the corresponding numerical value of longer spread design dependability Po, connect to form and anti-ly abandon waterline.
the present invention calculates by the period year by year based on the long sequence data of two Phase flow, avoid traditional Typical Year method calculate in the Typical Year time, year number choose and vary with each individual, the problem that the scheduling graph causing different designs personnel to draw is different, all time day parts are all calculated simultaneously, avoid removing destruction time method and will destroy removal in the whole year in time, make the problem that in year, day part water supply fraction sample reduces.
a kind of reservoir capacity adjustment figure draws new method, carries out as follows, as shown in Figure 1:
step one, the tamper-proof water level of day part over the years or the water yield, forced partial outage/water level or the water yield, anti-ly abandon water water level or water yield cheek.
illustrate: computational methods belong to Runoff adjustment content, identical with conventional method.
step 2, the tamper-proof water level of day part over the years or the water yield, forced partial outage/water level or the water yield, anti-ly abandon water water level or water yield sequence.
by tamper-proof for day part over the years water level or the water yield from little to large sequence; By day part forced partial outage/water level over the years or the water yield from little to large sequence; By anti-for day part over the years water water level or the water yield of abandoning from little to large sequence.
illustrate: also can sort from big to small.
the tamper-proof line that step 3, design dependability are corresponding, forced partial outage/supply line, anti-waterline of abandoning extract.
get the tamper-proof water level of day part over the years or the water yield from little to the corresponding numerical value of longer spread design dependability Po, connect to form tamper-proof line; Get day part over the years forced partial outage/water level or the water yield from little to the corresponding numerical value of longer spread design dependability 1-Po, connect to form forced partial outage/supply line; Get anti-water water level or the water yield of abandoning of day part over the years from little to the corresponding numerical value of longer spread design dependability Po, connect to form and anti-ly abandon waterline.By tamper-proof line, forced partial outage/supply line, prevent that abandoning waterline with time is abscissa, water level or the water yield are ordinate drafting pattern.
during concrete enforcement, said method of the present invention can adopt traditional computer to process.
Embodiment
this example is chosen certain service reservoir runoff regulation with year adjusting function and is described as an example, and specific implementation process is as follows:
one, engineering data
reservoir engineering supplies water to county town.Reservoir engineering reservoir operation scheme 511.00m, the following storage capacity 1734m of normal pool level
3
, level of dead water 496m, minimum capacity of a reservoir 3,340,000 m
3
, utilizable capacity 1400m
3
, project scale is medium-sized, and project scale or rank of project is IV etc.County town water supply fraction P=95%, and evenly transfer the environment water yield 6,150,000 m the whole year
3
.
the two Phase flow series that engineering adopts is (5 ~ August is by ten days) month by month average diameter flow of 1963 ~ 2009 years totally 46 years (water years).
two, the tamper-proof water yield of day part over the years, restriction water-supply quantity calculate
adopt conventional Calculation Method calculating achievement in table 1, table 2.(there is not increasing and supply water in urban water supply, therefore this engineering does not calculate and prevents abandoning waterline)
three, the tamper-proof water yield of day part over the years, the sequence of restriction water-supply quantity
the tamper-proof water yield of day part over the years, restriction water-supply quantity sequence achievement are respectively in table 3, table 4.
because the table width of above-mentioned table 1 ~ 4 is wider, concentrate in attached manual subordinate list and list.
four, the tamper-proof water yield of day part, restriction water-supply quantity extract
get the tamper-proof water yield of day part over the years from little to the corresponding numerical value of longer spread design dependability P=95%, connect to form tamper-proof line; Get day part over the years restriction water-supply quantity from little to the corresponding numerical value of longer spread design dependability P=5%, connect to form restriction supply line, achievement sees the following form.
the tamper-proof line of engineering, restriction supply line achievement
Claims (4)
1. a reservoir capacity adjustment drawing drawing method, is characterized in that: the method is drawn according to the following steps:
The first step, calculates the tamper-proof water level of day part over the years or the water yield, forced partial outage/water level or the water yield, prevents abandoning water water level or the water yield;
Second step, to the tamper-proof water level of day part over the years or the water yield, forced partial outage/water level or the water yield, anti-ly abandons water water level or the water yield sorts;
3rd step, extracts corresponding tamper-proof line, forced partial outage/supply line by design dependability and prevents abandoning waterline.
2. method according to claim 1, is characterized in that: the computational methods of the described first step belong to Runoff adjustment content, calculate according to a conventional method.
3. method according to claim 1, is characterized in that: the sequence of described second step is by tamper-proof for day part over the years water level or the water yield, abandons water water level or the water yield from little to large sequence or sort from big to small by anti-to day part forced partial outage/water level over the years or the water yield, day part over the years.
4. method according to claim 1, is characterized in that: the extracting method of described 3rd step is: extract by design dependability Po; Specifically tamper-proof for day part over the years water level or the water yield are formed tamper-proof line from little to couple together to longer spread and by the corresponding numerical value of design dependability Po; By day part forced partial outage/water level over the years or the water yield from little to couple together to longer spread and by the corresponding numerical value of design dependability 1-Po to form anti-ly abandon water water level or water yield line; By tamper-proof line, forced partial outage/supply line, prevent that abandoning waterline with time is abscissa, water level or the water yield are ordinate drafting pattern.
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| CN111862265A (en) * | 2020-06-19 | 2020-10-30 | 中国电建集团昆明勘测设计研究院有限公司 | Hydropower station water storage period scheduling graph compilation method based on water level control and application |
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| CN111862265A (en) * | 2020-06-19 | 2020-10-30 | 中国电建集团昆明勘测设计研究院有限公司 | Hydropower station water storage period scheduling graph compilation method based on water level control and application |
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Address after: 550002 No. 27 South Baoshan Road, Nanming District, Guizhou, Guiyang Patentee after: Guizhou water conservancy and Hydropower Survey, design and Research Institute Co., Ltd Address before: 550002 No. 27 South Baoshan Road, Nanming District, Guizhou, Guiyang Patentee before: GUIZHOU SURVEY & DESIGN Research Institute FOR WATER RESOURCES AND HYDROPOWER |