【正文】
縣城電力需求ARIMA模型及預測07級工程造價2班 江旺 200712214063摘要:縣城年度電能消耗數據雖有隨機成分,但又非常明顯的內在規(guī)律,類似的如用水量,城鎮(zhèn)人均消費等等??茖W預測電力需求是一項重要的基礎工作,用時間序列模型來進行分析,預測,較為簡易且有足夠的精度。以19962005年度各月的全社會用電量作為時間序列,用求和自回歸移動平均(ARIMA)乘積模型建模,結果比較不錯,說明可以用ARIMA模型對縣城電力需求做中期預測。關鍵詞:時間序列;ARIMA模型;預測;SASAbstract: There are some random factors,as well as obvious intrinsic rules,in the counties39。 year39。s data of electricity consume. Forecasting counties39。 electricity demand scientifically is an important basic tasks,and need an forecasting method with easier to use and having sufficient the purpose of pressing close to practice and easier to checkout,an ARIMA model of time series according to the 19962005 electricity con