A Calculation Method for Frozen Storage Capacity of Pumped Storage Power Station Reservoirs in Cold and Severely Cold Areas
A technology of pumped storage power station and calculation method, which is applied in calculation, data processing application, forecasting, etc., and can solve problems such as unconsidered, large calculated value of frozen storage capacity, and unconsidered impact of frozen storage capacity.
Active Publication Date: 2020-07-07
POWERCHINA BEIJING ENG +1
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This method does not consider the influence of the pumping and power generation operation of the pumped storage power station on the maximum ice thickness, nor does it consider the impact of the thin ice area and water area generated by the pumping and power generation operation of the power station on the frozen storage capacity, resulting in the calculated value of the frozen storage capacity being higher than the actual situation. Too big
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[0059] If 5 pumped storage power stations in northern my country are known:
[0060] Pumped storage power station 1: located at 41° north latitude, with a total installed capacity of 1200MW (4×300MW). The normal storage level of the Upper Reservoir is 1940.00m, the stagnant water level is 1903.00m, and the total storage capacity is 6.9 million m 3 , the average temperature of the coldest month is -20.2°C. The normal storage level of the lower reservoir is 1400.00m, the stagnant water level is 1355.00m, and the total storage capacity is 7.15 million m 3 , the average temperature of the coldest month is -19.5°C.
[0061] Pumped storage power station II: located at 40°25′ north latitude, with a total installed capacity of 1200MW (4×300MW). The normal storage level of the Upper Reservoir is 392.0m, the stagnant water level is 360.0m, and the total storage capacity is 12.56 million m 3 , the average temperature of the coldest month is -16.3°C. The normal storage level of the l...
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The invention discloses a calculation method for the reservoir freezing reservoir capacity of a pumped storage power station in cold and severe cold areas. The calculation method comprises the following steps that: according to the operation and meteorological data of the reservoir of the pumped storage power station, obtaining the maximum ice thickness [Delta]ip of the reservoir of the power station; according to the design data of the pumped storage power station, obtaining a reservoir area A reservoir corresponding to the normal storage level of the reservoir of the power station; according to the ice condition distribution statistical table of the reservoir of the pumped storage power station in cold and severe cold areas, combining with a specific working condition to obtain the weight factor [Beta] thickness of the reservoir area occupation of the area of a thick-ice area and the weight factor [Beta] thinness of the reservoir area occupation of the area of a thin-ice area when the ice thickness of the reservoir of the power station is maximum; and processing the ice thickness of the thin-ice area approximatively and uniformly according to the 1 / 2 of the maximum ice thickness [Delta]ip of the same reservoir area, and calculating the reservoir freezing reservoir capacity Vip=0.9*[Delta]ip* reservoir A* ([Beta] thickness+[Beta] thinness / 2) of pumped storage power station in cold and severe cold areas. Compared with a traditional calculation method for the reservoir freezing reservoir capacity of the pumped storage power station, the calculation method disclosed by the invention more conforms to objective reality, and therefore, the calculation method is higher in accuracy.
Description
technical field [0001] The invention relates to an algorithm for frozen storage capacity of a pumped storage power station reservoir, in particular to a calculation method for the frozen storage capacity of a pumped storage power station reservoir in a cold and severely cold area affected by the pumping and power generation of the power station. Background technique [0002] The freezing of the reservoir of the pumped storage power station in the cold and severe cold area encroached on a part of the total storage capacity, which reduced the power generation storage capacity and affected the power generation efficiency to a certain extent. Therefore, the frozen storage capacity is a problem in the design of the pumped storage power station in the cold and severe cold area. Traditionally, the frozen storage capacity of pumped storage power station reservoirs adopts the method for determining the frozen storage capacity of pumped storage power station reservoirs given in Article...
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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q50/06G16Z99/00
Inventor 赵海镜靳亚东刘书宝李晓伟王朝阳耿贵彪王婷婷杨霄霄石清刘凤成
Owner POWERCHINA BEIJING ENG