CN107288096A - Reservoir Restricted Water Level demarcation method and system based on secondary high intermediate-term movement - Google Patents
Reservoir Restricted Water Level demarcation method and system based on secondary high intermediate-term movement Download PDFInfo
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Abstract
The present invention relates to Hydrology electrical domain, disclose a kind of reservoir Restricted Water Level demarcation method and system based on secondary high intermediate-term movement, with leading time it is longer carry out reservoir Restricted Water Level management.The inventive method includes：According to the secondary high mid-term Fluctuation of history, determine at least one associated region Changing period and to should the secondary high west of Changing period stretch the longitude range of ridge point east-west direction and secondary high west is stretched ridge point longitude and changed with time function；On any reservoir influenceed in associated region by secondary height, when occurring precipitation using the reservoir institute across secondary high west stretch ridge point longitude as cut-point the Changing period be divided into six periods, and calculate the average daily precipitation of each period corresponding reservoir；Stretched according to secondary high west ridge point longitude change with time the reservoir corresponding to function and each period average daily precipitation to the flood season limit level of the reservoir by six periods carry out segmentation planning.
Description
Technical field
The present invention relates to Hydrology electrical domain, more particularly to a kind of reservoir Restricted Water Level based on secondary high intermediate-term movement
Demarcation method and system.
Background technology
China's overwhelming majority reservoir has flood control, emerging sharp two critical functions concurrently, and Season Precipitation is big, between flood control and emerging profit
It is frequently present of contradiction：Flood season limit level is high, is conducive to retaining Xing Li, but faces compared with great rainfall, and flooding action is small, and reservoir is in itself with
There is security risk in trip area；Flood season limit level is low, is conducive to flood control safety, but easily causes flood season and largely abandon anhydrous after water, flood
It can store, influence the situation of economic benefit.Traditional reservoir operation is conceived to flood control safety, defines flood season level control range, shadow
Xiangshui County storehouse benefit.Dynamic control of limitation level in flood season theory, mainly dynamically adjusts flood season limit level according to precipitation information, can be to a certain degree
Upper raising reservoir economic benefit, alleviates the contradiction between flood control by reservoir regulation and Xing Li.But, relevant Limited Water Level of Reservoir in Flood Season is dynamically controlled at present
The research of method processed, following 24h, 48h precipitation forecast of Main Basiss meteorological department issue, because leading time is short, runs into strong drop
Water process, reservoir operation often has little time to successfully manage, it is therefore desirable to which a kind of longer reservoir Restricted Water Level of leading time is drawn
Method is determined, to meet reservoir operation demand.Northwest Pacific subtropical high (hereinafter referred to as secondary high) is influence China's summer drop
One of most important most direct factor of water, southwest air stream of a large amount of steam along secondary high rim is northwards transported to China mainland, production
Raw precipitation.Research finds that SUMMER SUBTROPICAL height has the east-west direction Medium-range Oscillations evolution process that the cycle is 15 days or so, can direct shadow
Rainfall in China generation area is rung, accordingly, it is considered to which secondary high intermediate-term movement, has good guidance to Limited Water Level of Reservoir in Flood Season dynamic control
Meaning.
The content of the invention
Present invention aims at a kind of reservoir Restricted Water Level demarcation method based on secondary high intermediate-term movement is disclosed, with pre-
See that the phase carries out reservoir Restricted Water Level management longerly.
To achieve the above object, the invention discloses a kind of reservoir Restricted Water Level delimitation based on secondary high intermediate-term movement
Method, including：
According to the secondary high mid-term Fluctuation of history, the Changing period of at least one associated region is determined and to week should be developed
The longitude range of ridge point east-west direction is stretched in the secondary high west of phase and secondary high west is stretched ridge point longitude and changed with time function；
On any reservoir influenceed in the associated region by secondary height, when occurring precipitation with the reservoir across secondary Gao Xishen
Ridge point longitude is that the Changing period is divided into six periods by cut-point, and calculates the day of the reservoir corresponding to each period
Average precipitation；
Ridge point longitude is stretched according to the secondary high west to change with time day of the reservoir corresponding to function and each period
Average precipitation carries out segmentation planning to the flood season limit level of the reservoir by six described periods；
Wherein, six periods are respectively：
First time period, stretching ridge point most Dong Weizhixi from the secondary high west of the associated region and enter influences the east of the reservoir precipitation
The period of portion's longitude end points；
Second time period, the western longitude end points of the reservoir is entered from the east longitude end points west of the reservoir precipitation is influenceed
Period；
3rd period, ridge is stretched from influenceing the western longitude end points west of the reservoir precipitation to enter the secondary high west of the associated region
The period of the most western position of point；
4th period, stretching ridge point most Xi Weizhidong from the secondary high west of the associated region and enter influences the west of the reservoir precipitation
The period of portion's longitude end points；
5th period, the east longitude end points of the reservoir is entered from the western longitude end points east of the reservoir precipitation is influenceed
Period；
6th period, ridge is stretched from influenceing the east longitude end points east of the reservoir precipitation to enter the secondary high west of the associated region
The period of the most eastern position of point.
Corresponding with the above method, invention additionally discloses a kind of reservoir Restricted Water Level based on secondary high intermediate-term movement
Delimitation system, including：
First processing units, for according to the secondary high mid-term Fluctuation of history, determining the differentiation of at least one associated region
Cycle and to should the secondary high west of Changing period stretch the longitude range of ridge point east-west direction and ridge point longitude is stretched with the time in secondary high west
Change function；
Second processing unit, for any reservoir on being influenceed in the associated region by secondary height, is dropped with the reservoir
During water across secondary high west stretch ridge point longitude for cut-point the Changing period be divided into six periods, and calculate each time
The average daily precipitation of the corresponding reservoir of section；
3rd processing unit, changes with time function and each period for stretching ridge point longitude according to the secondary high west
The average daily precipitation of the corresponding reservoir carries out segmentation planning to the flood season limit level of the reservoir by six described periods；
Wherein, six periods are respectively：
First time period, stretching ridge point most Dong Weizhixi from the secondary high west of the associated region and enter influences the east of the reservoir precipitation
The period of portion's longitude end points；
Second time period, the western longitude end points of the reservoir is entered from the east longitude end points west of the reservoir precipitation is influenceed
Period；
3rd period, ridge is stretched from influenceing the western longitude end points west of the reservoir precipitation to enter the secondary high west of the associated region
The period of the most western position of point；
4th period, stretching ridge point most Xi Weizhidong from the secondary high west of the associated region and enter influences the west of the reservoir precipitation
The period of portion's longitude end points；
5th period, the east longitude end points of the reservoir is entered from the western longitude end points east of the reservoir precipitation is influenceed
Period；
6th period, ridge is stretched from influenceing the east longitude end points east of the reservoir precipitation to enter the secondary high west of the associated region
The period of the most eastern position of point.
The invention has the advantages that：
Energy leading time carries out reservoir Restricted Water Level management longerly, and reservoir fortune is adjusted according to reservoir Restricted Water Level
OK, maximum economic benefit is obtained on the premise of flood control safety.
Embodiment
Embodiments of the invention are described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Embodiment 1
The present embodiment discloses a kind of reservoir Restricted Water Level demarcation method based on secondary high intermediate-term movement, including：
Step S1, according to the secondary high mid-term Fluctuation of history, determine the Changing period and correspondingly of at least one associated region
The longitude range of ridge point east-west direction is stretched in the secondary high west of the Changing period and secondary high west is stretched ridge point longitude and changed with time letter
Number.
In this step, so-called associated region, general justice refers to the region influenceed by secondary high mid-term；Based on the non-secondary high time
Meteorological data contrast under normal meteorological state, it may be determined that the specific associated region influenceed by secondary high mid-term.
Moreover, further, those skilled in the art can also be carried out in above-mentioned identified big associated region
The smaller region division of fine granularity, the performance characteristic that will be influenceed by secondary high mid-term is approximate and geographical position that be positioned proximate to is drawn
It is divided into a sub-regions, related performance characteristic can be specific precipitation influence degree etc..
The explanation of value is：Following associated regions can be that general adopted big associated region or fine granularity are small
Subregion, subsequently repeat no more.
Step S2, any reservoir on being influenceed in associated region by secondary height, when occurring precipitation with the reservoir institute across secondary height
West stretches ridge point longitude and the Changing period is divided into six periods for cut-point, and calculates the reservoir corresponding to each period
Average daily precipitation.
In this step, six periods are respectively：
First time period, stretching ridge point most Dong Weizhixi from the secondary high west of associated region and enter influences the east warp of the reservoir precipitation
Spend the period of end points；
Second time period, the western longitude end points of the reservoir is entered from the east longitude end points west of the reservoir precipitation is influenceed
Period；
3rd period, ridge point is stretched most from influenceing the western longitude end points west of the reservoir precipitation to enter the secondary high west of associated region
The period of western position；
4th period, stretching ridge point most Xi Weizhidong from the secondary high west of associated region and enter influences the western warp of the reservoir precipitation
Spend the period of end points；
5th period, the east longitude end points of the reservoir is entered from the western longitude end points east of the reservoir precipitation is influenceed
Period；
6th period, ridge point is stretched most from influenceing the east longitude end points east of the reservoir precipitation to enter the secondary high west of associated region
The period of eastern position.
For example：Certain reservoir in the middle part of using Hunan Province have collected nearly 30 years damsites Daily rainfall number as research object
Ridge point position data is stretched according to secondary high west day by day, can be drawn：
It is secondary high-order setting in most the east when for a cycle beginning, first it is secondary it is high is gradually moved from east orientation west, until arriving
Up to westernmost end, then gradually move from West to East, be eventually returned to most the east, a cycle of oscillation terminates.High one of SUMMER SUBTROPICAL is drilled
The longitude range that ridge point is stretched in secondary high west in variable period is [105E, 135E], and secondary high west is stretched ridge point longitude and changed with time function
For：
Wherein a, b be in secondary high cycle of oscillation that span is 3.5~5 ° from east orientation west, translational speed from West to East/
My god, t1To move t from east orientation west in secondary high vibration1My god, t2To move t from West to East in secondary high vibration2My god.
Ridge point position range is stretched for [110E, 120E] in secondary high west when precipitation occurs for damsite area.It is then based on history
Data divide and calculate the average daily precipitation of the reservoir corresponding to each period.
Step S3, stretch according to secondary high west ridge point longitude and change with time the reservoir corresponding to function and each period
Six periods that average daily precipitation is pressed to the flood season limit level of the reservoir carry out segmentation planning.
In this step, specifically segmentation planning can be：When predicting that precipitation will start, the flood of reduction reservoir is restricted water supply
Position；Predicting that precipitation terminates or during without precipitation, raising the flood season limit level of reservoir.In specifically flood control Xing Li applications, Ke Yigen
The further deployment that becomes more meticulous is done according to parameters such as the current stock's water of reservoir, area, waters run-offs.
Embodiment 2
Corresponding with above method embodiment, the present embodiment discloses a kind of correspondence system for performing the above method, including：
First processing units, for according to the secondary high mid-term Fluctuation of history, determining the differentiation of at least one associated region
Cycle and to should the secondary high west of Changing period stretch the longitude range of ridge point east-west direction and ridge point longitude is stretched with the time in secondary high west
Change function；
Second processing unit, for any reservoir on being influenceed in associated region by secondary height, when occurring precipitation with the reservoir
Across secondary high west stretch ridge point longitude for cut-point the Changing period be divided into six periods, and calculate each institute period
To should reservoir average daily precipitation；
3rd processing unit, for according to secondary high west stretch ridge point longitude change with time function and each period institute it is right
Six periods being pressed to the flood season limit level of the reservoir of average daily precipitation of reservoir it should carry out segmentation planning；
Wherein, six periods are respectively：
First time period, stretching ridge point most Dong Weizhixi from the secondary high west of associated region and enter influences the east warp of the reservoir precipitation
Spend the period of end points；
Second time period, the western longitude end points of the reservoir is entered from the east longitude end points west of the reservoir precipitation is influenceed
Period；
3rd period, ridge point is stretched most from influenceing the western longitude end points west of the reservoir precipitation to enter the secondary high west of associated region
The period of western position；
4th period, stretching ridge point most Xi Weizhidong from the secondary high west of associated region and enter influences the western warp of the reservoir precipitation
Spend the period of end points；
5th period, the east longitude end points of the reservoir is entered from the western longitude end points east of the reservoir precipitation is influenceed
Period；
6th period, ridge point is stretched most from influenceing the east longitude end points east of the reservoir precipitation to enter the secondary high west of associated region
The period of eastern position.
To sum up, reservoir Restricted Water Level demarcation method and system based on secondary high intermediate-term movement disclosed in the present embodiment,
Have the advantages that：
Energy leading time carries out reservoir Restricted Water Level management longerly, and reservoir fortune is adjusted according to reservoir Restricted Water Level
OK, maximum economic benefit is obtained on the premise of flood control safety.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (2)
1. a kind of reservoir Restricted Water Level demarcation method based on secondary high intermediate-term movement, it is characterised in that including：
According to the secondary high mid-term Fluctuation of history, the Changing period of at least one associated region is determined and to should Changing period
The longitude range of ridge point east-west direction is stretched in secondary high west and secondary high west is stretched ridge point longitude and changed with time function；
On any reservoir influenceed in the associated region by secondary height, when occurring precipitation with the reservoir across secondary high west stretch ridge point
Longitude is that the Changing period is divided into six periods by cut-point, and calculates the per day of the reservoir corresponding to each period
Precipitation；
Ridge point longitude is stretched according to the secondary high west to change with time the per day of the reservoir corresponding to function and each period
Precipitation carries out segmentation planning to the flood season limit level of the reservoir by six described periods；
Wherein, six periods are respectively：
First time period, stretching ridge point most Dong Weizhixi from the secondary high west of the associated region and enter influences the east warp of the reservoir precipitation
Spend the period of end points；
Second time period, from influence the reservoir precipitation east longitude end points west enter the reservoir western longitude end points time
Section；
3rd period, ridge point is stretched most from influenceing the western longitude end points west of the reservoir precipitation to enter the secondary high west of the associated region
The period of western position；
4th period, stretching ridge point most Xi Weizhidong from the secondary high west of the associated region and enter influences the western warp of the reservoir precipitation
Spend the period of end points；
5th period, from influence the reservoir precipitation western longitude end points east enter the reservoir east longitude end points time
Section；
6th period, ridge point is stretched most from influenceing the east longitude end points east of the reservoir precipitation to enter the secondary high west of the associated region
The period of eastern position.
2. a kind of reservoir Restricted Water Level based on secondary high intermediate-term movement delimit system, it is characterised in that including：
First processing units, for according to the secondary high mid-term Fluctuation of history, determining the Changing period of at least one associated region
With to should the secondary high west of Changing period stretch the longitude range of ridge point east-west direction and change of the ridge point longitude with the time is stretched in secondary high west
Change function；
Second processing unit, for any reservoir on being influenceed in the associated region by secondary height, when occurring precipitation with the reservoir
Across secondary high west stretch ridge point longitude for cut-point the Changing period be divided into six periods, and calculate each institute period
To should reservoir average daily precipitation；
3rd processing unit, for according to the secondary high west stretch ridge point longitude change with time function and each period institute it is right
Should the average daily precipitation of reservoir segmentation planning is carried out by six described periods to the flood season limit level of the reservoir；
Wherein, six periods are respectively：
First time period, stretching ridge point most Dong Weizhixi from the secondary high west of the associated region and enter influences the east warp of the reservoir precipitation
Spend the period of end points；
Second time period, from influence the reservoir precipitation east longitude end points west enter the reservoir western longitude end points time
Section；
3rd period, ridge point is stretched most from influenceing the western longitude end points west of the reservoir precipitation to enter the secondary high west of the associated region
The period of western position；
4th period, stretching ridge point most Xi Weizhidong from the secondary high west of the associated region and enter influences the western warp of the reservoir precipitation
Spend the period of end points；
5th period, from influence the reservoir precipitation western longitude end points east enter the reservoir east longitude end points time
Section；
6th period, ridge point is stretched most from influenceing the east longitude end points east of the reservoir precipitation to enter the secondary high west of the associated region
The period of eastern position.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112529780A (en) * | 2020-12-16 | 2021-03-19 | 国网湖南省电力有限公司 | Tangent equation-based method and system for identifying secondary high-western stretching ridge points |
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| JP2007023608A (en) * | 2005-07-15 | 2007-02-01 | Yamatake Corp | System and method for estimating river flow rate, system and method for estimating water level of river, and program |
| CN103088784A (en) * | 2013-01-21 | 2013-05-08 | 武汉大学 | Cascade reservoir flood control water level real-time dynamic control method |
| CN105676890A (en) * | 2016-01-22 | 2016-06-15 | 长江水利委员会长江科学院 | Dynamic operation water level control method for 3D or higher cascaded reservoirs in flood season |
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Patent Citations (3)
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| JP2007023608A (en) * | 2005-07-15 | 2007-02-01 | Yamatake Corp | System and method for estimating river flow rate, system and method for estimating water level of river, and program |
| CN103088784A (en) * | 2013-01-21 | 2013-05-08 | 武汉大学 | Cascade reservoir flood control water level real-time dynamic control method |
| CN105676890A (en) * | 2016-01-22 | 2016-06-15 | 长江水利委员会长江科学院 | Dynamic operation water level control method for 3D or higher cascaded reservoirs in flood season |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112529780A (en) * | 2020-12-16 | 2021-03-19 | 国网湖南省电力有限公司 | Tangent equation-based method and system for identifying secondary high-western stretching ridge points |
| CN112529780B (en) * | 2020-12-16 | 2022-06-24 | 国网湖南省电力有限公司 | Tangent equation-based method and system for identifying secondary high-western stretching ridge points |
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Address after: 410000 Shaoshan North Road, Yuhua District, Hunan, No. 388, No. Applicant after: State Grid Hunan Electric Power Co., Ltd. Applicant after: National network Hunan Electric Power Co., Ltd. disaster prevention and Reduction Center Applicant after: State Grid Corporation of China Address before: 410000 Shaoshan North Road, Yuhua District, Hunan, No. 388, No. Applicant before: State Grid Hunan Electric Power Company Applicant before: State Grid Hunan Electric Power Company prevents and reduces natural disasters center Applicant before: State Grid Corporation of China |
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