关键词: 配电网, 电能损耗, 电动抽油机, 电流变化, 每小时等效系数

Abstract: This paper studies how the power line loss in a distribution network will increase, if the load changes. A concekt "every hour's equivalant coefficient", is suggested, the range of its values is analysed and some calculation equations are derived. This factor is important for controlling the power line loss in an oil field operated with a large number of walking beam pumping units.