一種基于ARMA模型的配電網(wǎng)饋線負(fù)荷預(yù)測方法
李曉東1,陳中顯2
(1 國網(wǎng)無錫供電公司,江蘇 無錫 214062;2 國網(wǎng)合肥供電公司,安徽 合肥 230022)
摘 要:為了提高配電網(wǎng)系統(tǒng)的運行效率和穩(wěn)定性,在建立ARMA 模型的基礎(chǔ)上,對配電網(wǎng)饋線負(fù)荷進行預(yù)測和分析。建立了配電網(wǎng)饋線負(fù)荷數(shù)據(jù)序列及ARMA 模型,對饋線負(fù)荷數(shù)據(jù)序列的差分運算、標(biāo)準(zhǔn)化、自相關(guān)系數(shù)和偏相關(guān)系數(shù)進行分析,并采用ARMA 模型對未來某一時間段內(nèi)的配電網(wǎng)饋線負(fù)荷數(shù)據(jù)序列進行預(yù)測。算例結(jié)果分析表明,ARMA 模型預(yù)測值與實際值相符。
關(guān)鍵詞:配電網(wǎng);饋線負(fù)荷預(yù)測;數(shù)據(jù)序列;ARMA 模型
中圖分類號:TM715 文獻標(biāo)識碼:A 文章編號:1007-3175(2017)01-0035-03
A Kind of Distribution Grid Feeder Load Forecasting Method Based on
Auto-Regressive and Moving Average Model
LI Xiao-dong1, CHEN Zhong-xian2
(1 State Grid Wuxi Power Supply Company, Wuxi 214062, China; 2 State Grid Hefei Power Supply Company, Hefei 230022, China)
Abstract: In order to improve the operational efficiency and stability of distribution grid system, this paper carried out prediction and analysis for distribution grid feeder load, based on the establishment of auto-regressive and moving average (ARMA) model. The distribution grid feeder load data series and the ARMA model were established to analyze the difference operation, standardization, autocorrelation coefficient and partial correlation coefficient of feeder load data series. The ARMA model was adopted to predict the distribution grid feeder load data series in certain period of time. The analysis results of calculation examples show that the prediction value of the ARMA model conforms to the actual value.
Key words: distribution grid; feeder load forecasting; data series; auto-regressive and moving average model
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