用稀疏对偶单纯形法求解每时段的经济功率分配，所用内存少，计算时间短。
Small memory capacity and short CPU time are repuired by the algorithm for the solution of the economic dispatch every interval with simple form of sparse dual method.
由回归分析可知当电力进入买方市场时，售电价格是影响经济功率交换的主要因素。
It is put forward that electric price is main factor for effect on economic power exchange when power industry comes into the market of buyers.
功率因数是输配电系统的一项重要的经济指标。
Power Factor is an important economic indicator in transmission and distribution power system.
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