CN106530115A - Method of calculating maximum ice thickness of pumped storage power station reservoir in cold region - Google Patents
Method of calculating maximum ice thickness of pumped storage power station reservoir in cold region Download PDFInfo
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Abstract
The invention discloses a method of calculating maximum ice thickness of a pumped storage power station reservoir in a cold region. The method of calculating maximum ice thickness of a pumped storage power station reservoir in a cold region includes the steps: according to statistics of meteorological data of the region where a pumped storage power station is, obtaining the average temperature of the coldest month; according to statistics of the practical measurement data of the power station, obtaining the average water temperature of the coldest month; according to the operating data of the pumped storage power station, calculating the daily average operating number, the daily average operating time, and the upper and lower reservoir water head of the power station; and according to the ice thickness calculating formula, calculating and obtaining the maximum ice thickness of the pumped storage power station reservoir. With combination of the operating data of the pumped storage power station, the temperature data and the water temperature data, the method of calculating maximum ice thickness of a pumped storage power station reservoir in a cold region calculates the maximum ice thickness of the upper and lower reservoir of the pumped storage power station in a northern cold region of China. Compared with a traditional algorithm, the method of calculating maximum ice thickness of a pumped storage power station reservoir in a cold region considers the influence of water drawing and power generation running factors of the power station on ice thickness, thus improving the traditional method which only considers the temperature. Compared with the traditional ice thickness estimation method for a pumped storage power station, the method of calculating maximum ice thickness of a pumped storage power station reservoir in a cold region more accords with the objective reality, thus having higher accuracy.
Description
Technical field
The present invention relates to a kind of cold district hydroenergy storage station reservoir maximum ice thickness algorithm, more particularly to cold district
Hydroenergy storage station reservoir is drawn water by power station, the winter in generating influence region maximum ice thickness computational methods.
Background technology
Cold district hydroenergy storage station reservoir freezes and has occupied a part of aggregate storage capacity, reduces power storage capacity, so as to shadow
Ring to power benefit, therefore icebox is installed with the importance that meter is the design of cold district hydroenergy storage station.Reservoir maximum ice thickness
It is important parameter that icebox is installed with meter, traditionally maximum ice thickness is adopted《Hydraulic structure anti-ice freezes design specification》(NB/
T35024-2014 the reservoir ice thickness computing formula that) P68 appendix As are given is calculated, and the formula only considered Temperature Factor to ice
Thick impact, do not consider hydroenergy storage station reservoir draw water, impact of the generator operation to ice thickness.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind and can preferably calculate cold district hydroenergy storage station reservoir most
The method of big ice thickness.
The technical solution adopted in the present invention is：The side that a kind of cold district hydroenergy storage station reservoir maximum ice thickness is calculated
Method, comprises the following steps：
The first step, according to hydroenergy storage station reservoir meteorological data, statistics obtains the average of the damsite area most cold moon
Temperature Ta；
Second step, according to hydroenergy storage station water temperature of reservoir field data, is calculated at the most cold moon maximum ice thickness in power station
Water temperature Tw；
3rd step, draws water according to hydroenergy storage station, generator operation data, is calculated the average daily operation of the power station most cold moon
Times Nr；
4th step, draws water according to hydroenergy storage station, generator operation data, is calculated the average daily operation of the power station most cold moon
Time Tr；
5th step, upper and lower reservoir level data when being run according to hydroenergy storage station are calculated the power station most cold moon
Average water-head H of upper and lower reservoir；
6th step, according to the cold district hydroenergy storage station data obtained in first five step, is calculated as follows and obtains cold
Regional hydroenergy storage station reservoir maximum ice thickness δip。
δip=1.50 0.0155lnNr–0.0128lnTr–0.3237ln(Ta+50)
-0.0466ln Tw-0.0120ln H
The hydroenergy storage station reservoir is maximum, and ice thickness is drawn water by power station, generator operation is affected.
The invention has the beneficial effects as follows, with reference to cold district hydroenergy storage station design data, meteorological data and nearby
Engineering related data is built, cold district hydroenergy storage station reservoir ice thickness influence factor is considered, Reservoir in winter is calculated maximum
Ice thickness, improves traditional computational methods for not considering that power station operation factor affects on ice thickness, and the maximum ice thickness result of gained has
Higher precision.
Description of the drawings
Fig. 1 is the method for the present invention and the calculated several hydroenergy storage station reservoirs of tradition maximum ice thickness computational methods
Maximum ice thickness value and actual measurement comparison diagram.
Specific embodiment
With reference to the accompanying drawings and detailed description the present invention is described in further detail：
The method that the cold district hydroenergy storage station reservoir maximum ice thickness of the present invention is calculated, comprises the following steps：
The first step, according to hydroenergy storage station reservoir meteorological data, statistics obtains the average of the damsite area most cold moon
Temperature Ta(℃)；
Second step, according to hydroenergy storage station water temperature of reservoir field data, is calculated at the most cold moon maximum ice thickness in power station
Water temperature Tw(℃)；
3rd step, draws water according to hydroenergy storage station, generator operation data, is calculated the average daily operation of the power station most cold moon
Times Nr(secondary, including number of times and the generating number of times of drawing water)；
4th step, draws water according to hydroenergy storage station, generator operation data, is calculated the average daily operation of the power station most cold moon
Time Tr(h, including time of pumping and generating dutation)；
5th step, upper and lower reservoir level data data when being run according to hydroenergy storage station, is calculated power station most cold
Average water-head H (m) of month upper and lower reservoir；
6th step, according to the cold district hydroenergy storage station data obtained in first five step, is calculated as follows and obtains cold
Regional hydroenergy storage station reservoir maximum ice thickness δip(m)。
δip=1.50 0.0155lnNr–0.0128lnTr–0.3237ln(Ta+50)
-0.0466ln Tw-0.0120ln H
In formula：δipHydroenergy storage station reservoir maximum ice thickness, m；
NrThe average daily number of run of hydroenergy storage station, it is secondary；
TrThe average daily run time of hydroenergy storage station, h；
TaHydroenergy storage station ice thickness calculates reservoir area temperature, DEG C；
TwHydroenergy storage station ice thickness calculates reservoir area water temperature, DEG C；
The upper and lower reservoir level of H hydroenergy storage stations is poor, m.
The example of the inventive method calculating is exemplified below：
If 5 hydroenergy storage stations of known northern China：
Hydroenergy storage station one：Positioned at 41 ° of north latitude, total installation of generating capacity is 1200MW (4 × 300MW).Upper storage reservoir normally stores
Water level 1940.00m, level of dead water 1903.00m, 6,900,000 m of aggregate storage capacity3.Lower storage reservoir normal pool level 1400.00m, level of dead water
1355.00m, 7,150,000 m of aggregate storage capacity3。
Hydroenergy storage station two：Positioned at 40 ° 25 ' of north latitude, total installation of generating capacity 1200MW (4 × 300MW).Upper storage reservoir normally stores
Water level 392.0m, level of dead water 360.0m, aggregate storage capacity are 12,560,000 m3.Lower storage reservoir normal pool level 66m, level of dead water 62m, aggregate storage capacity
28710000 m3。
Hydroenergy storage station three：Positioned at 38 ° 31 ' of north latitude, total installation of generating capacity 1200MW (4 × 300MW).Upper storage reservoir normally stores
Water level 1492.50m, level of dead water 1467.00m, aggregate storage capacity are 468.97 ten thousand m3.Lower storage reservoir normal pool level 838m, level of dead water
798m, 502.99 ten thousand m of aggregate storage capacity3。
Hydroenergy storage station four：Positioned at 37 ° of 46 ' total installation of generating capacity 1000MW (4 × 250MW) of north latitude.Upper storage reservoir normally stores
Water level is 810m, and level of dead water is 779m, 789.0 ten thousand m of aggregate storage capacity3.Lower storage reservoir normal pool level 488m, level of dead water are 464m, always
83,300,000 m of storage capacity3。
Hydroenergy storage station five：Positioned at 40 ° 14 ' of north latitude, total installation of generating capacity 800MW (4 × 200MW).Upper storage reservoir normally stores
Water level 566m, level of dead water 531m, 4,450,000 m of aggregate storage capacity3.Lower storage reservoir normal pool level 89.5m, level of dead water 85m, aggregate storage capacity 7977
Ten thousand m3。
Wherein, the upper and lower reservoir of hydroenergy storage station one, the upper storage reservoir of hydroenergy storage station two, hydroenergy storage station three
Upper and lower reservoir, the reservoir that the upper storage reservoir of the upper storage reservoir of hydroenergy storage station four and hydroenergy storage station five is built for excavated by manual work, water
In reservoir area, all region ice thickness are all affected by power station operation；The lower storage reservoir of hydroenergy storage station two, hydroenergy storage station four
Lower storage reservoir and the lower storage reservoir of hydroenergy storage station five be also simultaneously conventional power plant reservoir in natural river course, storage capacity is larger, storehouse
There is the region of ice thickness not dependent station influence on system operation in area, its maximum ice thickness should be equal with the maximum ice thickness of conventional reservoir.
Below by taking 5 hydroenergy storage stations as an example, the method for the present invention is illustrated：
One upper storage reservoir of hydroenergy storage station：
The first step, according to one upper storage reservoir meteorological data of hydroenergy storage station, statistics obtain damsite area 2015～
The temperature on average T in winter in 2016 most cold the moon (in January, 2016)a=-19.1 DEG C；
Second step, surveys distribution of water temperature data according to hydroenergy storage station Reservoir region, be calculated power station 2015～
Water temperature T at the most cold moon (in January, 2016) the maximum ice thickness of winter in 2016w=0.5 DEG C；
3rd step, draws water according to hydroenergy storage station, generator operation data, is calculated 2015～2016 year winter of power station
The average daily number of run N in most cold the moon (in January, 2016)r=1.03 times；
4th step, draws water according to hydroenergy storage station, generator operation data, is calculated 2015～2016 year winter of power station
The average daily running time T in most cold the moon (in January, 2016)r=4.7h；
5th step, upper and lower reservoir level data data when being run according to hydroenergy storage station, is calculated power station most cold
Average water-head H=548.87m of month upper and lower reservoir；
6th step, according to the cold district hydroenergy storage station data obtained in first five step, is calculated as follows and obtains cold
Regional hydroenergy storage station reservoir maximum ice thickness δip(m)。
δip=1.50 0.0155lnNr–0.0128lnTr–0.3237ln(Ta+50)
-0.0466ln Tw-0.0120ln H
=0.33m
Similarly, according to the method for the present invention respectively to one lower storage reservoir of hydroenergy storage station, water in hydroenergy storage station two
Storehouse, three upper and lower reservoir of hydroenergy storage station, four upper storage reservoir of hydroenergy storage station and five upper storage reservoir of hydroenergy storage station maximum ice thickness
Calculated, obtain the maximum ice thickness value of above hydropower reservoir station, be shown in Table 1.
For the lower storage reservoir of hydroenergy storage station two, under the lower storage reservoir of hydroenergy storage station four and hydroenergy storage station five
Reservoir, due to the region that there is ice thickness not dependent station influence on system operation in reservoir area, when being calculated using the method for the present invention, palpus
Power station operation factor item in formula is changed into into 0, that is, is formulated as
δip=1.50 0.0155 × 0 0.0128 × 0 0.3237ln (Ta+50)
-0.0466ln Tw-0.0120×0
=1.50 0.3237ln (Ta+50)-0.0466ln Tw
According to the formula after the simplification, two lower storage reservoir of hydroenergy storage station, four lower storage reservoir of hydroenergy storage station is calculated
With five lower storage reservoir of hydroenergy storage station maximum ice thickness value, one is listed in table 1.
1 maximum ice thickness calculating achievement of table and actual measurement achievement contrast table
From table 1, the inventive method calculates the maximum ice thickness value of gained and actual measurement ice thickness value is closer to, in FIG table
Now maximum ice thickness value δ is calculated for the inventive methodip 2With actual measurement ice thickness value δip 1Corresponding idea is located at straight line δip 2=δip 1It is attached
Closely.It is also seen that for full storehouse maximum ice thickness is by the reservoir (hydroenergy storage station one of hydroenergy storage station operation by table 1 and Fig. 1
Upper and lower reservoir, two upper storage reservoir of hydroenergy storage station, three upper and lower reservoir of hydroenergy storage station, four upper storage reservoir of hydroenergy storage station and
Five upper storage reservoir of hydroenergy storage station), traditional algorithm calculates maximum ice thickness value more than the maximum ice thickness of actual measurement (traditional algorithm meter in Fig. 1
Calculate maximum ice thickness value δip 2With actual measurement ice thickness value δip 1Corresponding idea is located at straight line δip 2=δip 1Top)；And only there is ice
Thick not dependent station influence on system operation region reservoir (lower storage reservoir of hydroenergy storage station two, the lower storage reservoir of hydroenergy storage station four and
The lower storage reservoir of hydroenergy storage station five), former formula calculates maximum ice thickness value and is equal to the maximum ice thickness of actual measurement (traditional algorithm meter in Fig. 1
Calculate maximum ice thickness value δip 2With actual measurement ice thickness value δip 1Corresponding idea is located at straight line δip 2=δip 1Near).Conclusions are abundant
The method of the present invention is illustrated due to considering impact of the hydroenergy storage station operation to maximum ice thickness, its result of calculation is than tradition
Ice thickness computational methods acquired results are closer to actual measurement achievement.
Embodiment described above is merely to illustrate the technological thought of the present invention and feature, its object is to make in the art
Technical staff it will be appreciated that present disclosure implementing according to this, it is impossible to limit the patent model of the present invention only with the present embodiment
Enclose, i.e., equal change or modification that all disclosed spirit is made, still fall in the scope of the claims of the present invention.
Claims (3)
1. a kind of method that cold district hydroenergy storage station reservoir maximum ice thickness is calculated, it is characterised in that comprise the following steps：
The first step, according to hydroenergy storage station reservoir meteorological data, statistics obtains the temperature on average of the damsite area most cold moon
Ta；
Second step, according to hydroenergy storage station water temperature of reservoir field data, the water being calculated at the most cold moon maximum ice thickness in power station
Warm Tw；
3rd step, draws water according to hydroenergy storage station, generator operation data, is calculated the average daily number of run of the power station most cold moon
Nr；
4th step, draws water according to hydroenergy storage station, generator operation data, is calculated the average daily run time of the power station most cold moon
Tr；
5th step, upper and lower reservoir level data when being run according to hydroenergy storage station, be calculated the power station most cold moon it is upper,
Lower storage reservoir average water potential difference H；
6th step, according to the cold district hydroenergy storage station data obtained in first five step, is calculated as follows and obtains cold district
Hydroenergy storage station reservoir maximum ice thickness δip：
δip=1.50 0.0155lnNr–0.0128lnTr–0.3237ln(Ta+50)
-0.0466ln Tw-0.0120ln H。
2. the method that cold district hydroenergy storage station reservoir maximum ice thickness according to claim 1 is calculated, its feature exist
In the average daily number of run N of the 3rd steprIncluding number of times and the generating number of times of drawing water.
3. the method that cold district hydroenergy storage station reservoir maximum ice thickness according to claim 1 is calculated, its feature exist
In the average daily running time T of the 4th steprIncluding time of pumping and generating dutation.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634325A (en) * | 2014-12-26 | 2015-05-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Prototype observation method for reservoir water temperature change rule |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634325A (en) * | 2014-12-26 | 2015-05-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Prototype observation method for reservoir water temperature change rule |
Non-Patent Citations (3)
| Title |
|---|
| 吕明治 等: "典型抽水蓄能电站水库冰情原型监测", 《抽水蓄能电站工程设计》 * |
| 李晓伟 等: "抽水蓄能电站水文设计分析与计算", 《水力发电》 * |
| 白花琴 等: "东北地区水利水电工程施工期冰情预报及度凌措施", 《东北水利水电》 * |
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