中国农村水利水电
中國農村水利水電
중국농촌수이수전
CHINA RURAL WATER AND HYDROPOWER
2014年
12期
17-19,23
,共4页
武兰婷%何士华%朱剑军%裴英俊
武蘭婷%何士華%硃劍軍%裴英俊
무란정%하사화%주검군%배영준
径流模拟%自回归模型%季节性自回归模型%适用性分析
徑流模擬%自迴歸模型%季節性自迴歸模型%適用性分析
경류모의%자회귀모형%계절성자회귀모형%괄용성분석
runoff random simulation%autoregressive model%seasonal autoregressive model%applicability analysis
月径流序列的随机模拟通常采用季节性自回归模型[SAR(p)],该模型考虑了月径流随周期变化的特性。以仁里水文站37年的实测月径流序列为基础,计算分析其统计特性参数,根据序列中各月自回归系数的不同,对不同月取不同阶数的SAR(p)模型,并根据当地资料采用适线法估计偏态系数 Cs值,建立混合SAR(p)模型。与SAR(1)模型和SAR(2)模型的模拟结果对比,混合SAR(p)模型的模拟结果更接近实测资料,偏态系数Cs值和二阶自相关系数明显优于一、二阶模型,能较好的模拟原序列的统计特性。
月徑流序列的隨機模擬通常採用季節性自迴歸模型[SAR(p)],該模型攷慮瞭月徑流隨週期變化的特性。以仁裏水文站37年的實測月徑流序列為基礎,計算分析其統計特性參數,根據序列中各月自迴歸繫數的不同,對不同月取不同階數的SAR(p)模型,併根據噹地資料採用適線法估計偏態繫數 Cs值,建立混閤SAR(p)模型。與SAR(1)模型和SAR(2)模型的模擬結果對比,混閤SAR(p)模型的模擬結果更接近實測資料,偏態繫數Cs值和二階自相關繫數明顯優于一、二階模型,能較好的模擬原序列的統計特性。
월경류서렬적수궤모의통상채용계절성자회귀모형[SAR(p)],해모형고필료월경류수주기변화적특성。이인리수문참37년적실측월경류서렬위기출,계산분석기통계특성삼수,근거서렬중각월자회귀계수적불동,대불동월취불동계수적SAR(p)모형,병근거당지자료채용괄선법고계편태계수 Cs치,건립혼합SAR(p)모형。여SAR(1)모형화SAR(2)모형적모의결과대비,혼합SAR(p)모형적모의결과경접근실측자료,편태계수Cs치화이계자상관계수명현우우일、이계모형,능교호적모의원서렬적통계특성。
The seasonal autoregressive model [SAR(p)] is often used for random simulation of monthly runoff .The model can keep the period change feature of monthly runoff series .The paper analyzes the statistical parameters of 37 years'monthly runoff data of Renli Hydrometric Station ,the regression coefficients are different in different months ,so different months should take different or‐der of SAR(p) model and coefficient of skewness(Cs) should be estimated according to the local data ,mixed SAR(p) model is estab‐lished .The mixed SAR(p) model compare with SAR(1) model and SAR(2) model ,it is closer to the measured data ,the value of Cs and the second order autocorrelation coefficient are better than SAR (1) model and SAR(2) model ,it can better keep the statistical characteristics of the original sequence .