發(fā)布時(shí)間：2018-06-30 20:59

  本文選題：徑流變異 + 漢江上游流域�。� 參考：《西安理工大學(xué)》2017年碩士論文

【摘要】：水庫(kù)調(diào)度規(guī)則是基于水庫(kù)設(shè)計(jì)階段的水文資料序列模擬計(jì)算獲得的,由于全球氣候變化和人類活動(dòng)影響,流域下墊面條件發(fā)生變化,徑流系列發(fā)生了變異。水庫(kù)設(shè)計(jì)階段制定的調(diào)度規(guī)則已不適用于新的水文序列,因此,為應(yīng)對(duì)徑流變異對(duì)水庫(kù)調(diào)度的影響,研究新水文序列下的水庫(kù)調(diào)度規(guī)則十分必要。本文針對(duì)漢江上游石泉-喜河-安康梯級(jí)水庫(kù),研究了應(yīng)對(duì)徑流規(guī)律改變后梯級(jí)水庫(kù)的調(diào)度規(guī)則。論文主要研究?jī)?nèi)容及研究成果如下:(1)分析了漢江上游徑流規(guī)律,利用小波分析得出石泉入庫(kù)徑流具有6年和23年的周期,安康入庫(kù)徑流具有7年、17年和26年的周期;通過(guò)Kendall秩次檢驗(yàn)法得出石泉、安康徑流呈遞減趨勢(shì);運(yùn)用R/S分析法得出石泉、安康徑流序列具有持續(xù)性。(2)對(duì)漢江上游徑流過(guò)程進(jìn)行了變異診斷,運(yùn)用滑動(dòng)t檢驗(yàn)法、山本法、Mann-Kendall法、Pettitt法、有序聚類分析法、西沃茲信息準(zhǔn)則法等綜合分析得出,漢江上游徑流序列在1990年出現(xiàn)突變點(diǎn)。變異后流域年徑流量減少,減少時(shí)段主要集中在汛期。變異后5～10月,石泉、安康水庫(kù)入庫(kù)徑流分別減少39.20%和30.80%,年內(nèi)占比分別由80.94%和80.32%下降至77.25%和77.45%。趨勢(shì)性則由不顯著遞增轉(zhuǎn)變?yōu)椴伙@著遞減。(3)利用石泉、安康水庫(kù)原始調(diào)度圖模擬調(diào)度漢江上游梯級(jí)水庫(kù),得出1954年～1990年石泉、喜河、安康多年平均發(fā)電量分別為7.59、6.06及25.10億kW·h; 1990年～2005年石泉、喜河、安康多年平均發(fā)電量分別為5.66、4.57及18.35億kW-h。(4)制定了徑流規(guī)律變化后的改進(jìn)水庫(kù)調(diào)度圖。采用等出力方法得到新調(diào)度圖并運(yùn)用其進(jìn)行模擬調(diào)度,得到石泉、喜河、安康水電站多年平均發(fā)電量分別為5.69、4.57和18.46億kW·h,新調(diào)度圖相對(duì)原調(diào)度圖可提高梯級(jí)水庫(kù)的發(fā)電效益。(5)制定了徑流規(guī)律變化后的優(yōu)化水庫(kù)調(diào)度圖。以變異后徑流序列制定的新調(diào)度圖為初始值,建立優(yōu)化模型,通過(guò)模擬遺傳混合算法得到漢江上游梯級(jí)水庫(kù)聯(lián)合優(yōu)化調(diào)度圖,并運(yùn)用其進(jìn)行模擬調(diào)度,石泉、喜河、安康水電站多年平均發(fā)電量分別為5.83、4.62和18.59億kW·h,可進(jìn)一步提高梯級(jí)水庫(kù)發(fā)電效益。
[Abstract]:The regulation of reservoir operation is based on the simulation of hydrological data in the reservoir design stage. Because of global climate change and human activities, the underlying surface conditions of the basin have changed and the runoff series have changed. In order to deal with the influence of runoff variation on reservoir operation, it is necessary to study the reservoir operation rules under the new hydrological sequence. Aiming at the Shi Quan-Xi-Ankang cascade reservoirs in the upper reaches of the Hanjiang River, the regulation of cascade reservoirs after the change of runoff rules is studied in this paper. The main research contents and results are as follows: (1) the regularity of runoff in the upper reaches of the Hanjiang River is analyzed. The results of wavelet analysis show that the period of Shi Quan inflow is 6 years and 23 years, and the period of Ankang inflow is 7 years, 17 years and 26 years. By using Kendall rank test method, Shi Quan and Ankang runoff are found to be decreasing, and Shi Quan and Ankang runoff series are obtained by R- / S method. (2) the variation diagnosis of runoff process in the upper reaches of Hanjiang River is carried out, and the sliding t test method is used. The Mann-Kendall method, Pettitt method, ordered cluster analysis method and Sivoz information criterion method show that the runoff sequence in the upper reaches of the Hanjiang River appeared abrupt point in 1990. After variation, the annual runoff decreased, and the decrease period was mainly concentrated in flood season. During the period from May to October, the runoff of Shi Quan and Ankang reservoir decreased by 39.20% and 30.80%, respectively, and the percentage of runoff decreased from 80.94% and 80.32% to 77.25% and 77.45% respectively. (3) by using Shi Quan, the original dispatching diagram of Ankang Reservoir is used to simulate the operation of cascade reservoirs in the upper reaches of the Hanjiang River, and it is concluded that from 1954 to 1990, the Shi Quan, the Xi River, were obtained. The average annual power generation of Ankang is 7.59 kW / h and 2.51 billion kW / h respectively, and that of Shi Quan, Xihe and Ankang from 1990 to 2005 is 5.6kW / h and 1.835 billion kW / h respectively. (4) the improved reservoir operation map has been drawn up after the change of runoff regularity. The new scheduling diagram is obtained by using the equal force method and simulated scheduling is carried out by using it. The Shi Quan and Xihe River are obtained. The annual average power generation of Ankang Hydropower Station is 5.69 ~ 4.57 and 1.846 billion kW / h respectively. Compared with the original operation chart, the new dispatching chart can improve the power generation benefit of cascade reservoirs. (5) the optimized reservoir operation diagram after the change of runoff law is made. Based on the new regulation chart of the runoff sequence after variation as initial value, the optimization model is established, and the joint optimal dispatching diagram of cascade reservoirs in the upper reaches of the Hanjiang River is obtained by simulated genetic hybrid algorithm, and is used to simulate the operation, Shi Quan, Xihe, Xihe, Xihe, Xihe, Xihe, Xihe, Xihe. The annual average power generation of Ankang Hydropower Station is 5.83 KW 4.62 and 1.859 billion kW / h respectively, which can further improve the power generation efficiency of cascade reservoirs.
【學(xué)位授予單位】：西安理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TV697.1

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