Abstract:

Based on the the daily peak load of power and air temperature data from June to September during 2003~2007,the impacts of summer temperature variation on power load were analyzed in Shanghai by using the meteorological variation of the daily peak load of power.Results indicate that the trend of meteorological variation of the daily peak load of power is consistent with that of daily mean temperature,daily maximum temperature and daily minimum temperature.When daily maximum temperature is more than or equal to 33 degrees centigrade,daily peak load of power increase rapidly,and the 33,35 and 39 degrees centigrade of daily maximum temperature are three sensitive points of daily peak load of power to air temperature variation in Shanghai.During the periods with daily maximum temperature more than or equal to 35 degrees centigrade,the daily peak load of power varies greatly according to the air temperature,and the 95 percent threshold of meteorological variation of the daily peak load of power corresponds to daily maximum temperature more than or equal to 38 degrees centigrade.The meteorological variation of the daily peak load of power is directly related with the monthly and daily cooling degreedays in Shanghai.When the cooling degreedays are one times more than the 1971~2000 average,Shanghai is strongly affected by high temperature and the daily peak load of power increases rapidly,which increases the difficulty of electric power enterprise for power adjustment with higher using ratio of air condition in day and night