王曉燕 張建華 翁訸 王健



摘?要:目前精確地預測我國農村月用電量的特征和變化對農村風光互補發電系統容量的合理配置具有重要的意義。基于揚州地區歷史用電量數據,采用傳統的GM(1,1)模型對數據進行分析,發現傳統的GM(1,1)模型不能滿足精度的要求。所以提出了在多次累加的基礎上對傳統的GM(1,1)模型進行改進,對2016-2017年農村月用量進行預測。預測結果表明改進的GM(1,1)模型可以用來精確的預測揚州未來農村地區各月份的用電量,以便于農村風光互補發電系統的廣泛應用。
關鍵詞:農村月用電量;風光互補發電系統;灰色模型;多次累加;改進的GM(1,1)
Forecasting method based
on monthly electricity consumption in Rural areas of China
Wang Xiaoyan1??Zhang Jianhua1?Weng?He1?Wang Jian2
1.School of Water Conservancy and Energy Dynamics,Yangzhou University?JiangsuYangzhou?225000;
2.Nanjing Panda Electronics Co.,Ltd.Special Power supply Research and Development Department?JiangsuNanjing?210096
Abstract:At present,it is of great significance to accurately predict the characteristics and changes of rural monthly electricity consumption for the rational allocation of rural scenery complementary power generation system capacity.Based on the historical electricity consumption data of Yangzhou area,the traditional GM(1,1)model is used to analyze the data,and it is found that the traditional GM(1,1)model can not meet the requirements of accuracy.Therefore,on the basis of many accumulations,the traditional GM(1,1)model is improved to predict the monthly consumption of rural areas from 2016 to 2017.The prediction results show that the improved GM(1,1)model can be used to accurately predict the future months of Yangzhou rural areas.Electricity consumption,in order to facilitate the rural scenery complementary power generation system widely used.
Key words:Rural monthly electricity consumption;scenery complementary power generation system;grey model;multiple accumulation;improved GM(1,1)
隨著我國國民經濟的快速發展以及農村人民生活水平的提高,風光互補發電系統在農村地區已經得到了廣泛運用。而農村用電量預測是農村風光互補發電系統容量配置的基礎。為了實現風光互補系統容量的合理配置,需要運用數學模型對農村用電量進行預測,根據用電量的預測來制定合理的風光互補發電系統容量,從而保證風光互補發電系統的穩定運行[1]。
從上個世紀70年代開始,國內外對于用電量預測的研究熱情逐漸升溫,而我國從上世紀80年代開始發現農村用電量一度出現供應不足的情況,用電量預測慢慢成為電力公司一項必要的日常工作任務。長久以來國內外專家以及學者的實踐研究和各種數學模型的涌現,能用于農村的用電量預測方法有很多,比如常見的時間序列法、回歸分析法以及人工神經網絡法[2-4]。……