Power system load forecast, which is the base of power market technique supporting system, is an essential part of power system operation, control and planning.
电力系统负荷预测是电力系统运行、控制和规划不可缺少的一部分，是电力市场技术支持系统的基础。
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The paper introduces the structure of BDFM and the principle of its speed control. The superiority of BDFM driving for fan-type load is discussed base on the analysis on its power relationship.
The paper introduces the structure of BDFM and the principle of its speed control. The superiority of BDFM driving for fan-type load is discussed base on the analysis on its p...