: . “三表跨相测量三相电路无功功率”实验设计 汪燕 许军 陈攀峰 刘宏伟 (华北电力大学) 摘要:“三表跨相测量三相电路无功功率”实验是电路基础实验,适合给电气专业的本科生在大二下学期开设,这个实验案例设计在2019年第六届全国高校电工电子基础实验案例设计大赛中荣获了一等奖。本文从实验选题、测量方法选择、实验电路设计、实验方案设计、教学方案设计等方面介绍本实验案例的设计思路。 关键词:三表跨相; 无功功率; 实验设计 中图分类号:TM13 Experimental Design of "Measuring Reactive Power of Three-Phase Circuit by Three-Meter Crossing Phase" WANG Yan XU Jun CHEN Pan-feng LIU Hong-wei (North China Electric Power University) Abstract:The experiment of measuring reactive power of three-phase circuit with three meters is a basic circuit experiment. It is suitable for undergraduates majoring in electrical engineering in the second semester of their sophomore year. This experiment case won the first prize in the 6th National College Electrical and Electronic Basic Experiment Design Competition in 2019. This paper introduces the design idea of this experiment from the aspects of experiment topic selection, measurement method selection, experiment circuit design, experiment scheme design and teaching scheme design. Key words: three-meter cross-phase; reactive power ; experimental design 0 引言 电路基础实验是电气类本科生的必修环节,它不仅能够加深学生对电路理论知识的理解和掌握,同时对学生动手能力和创新能力的培养也起到了至关重要的作用。那么如何设计好一个实验以达到上述目的,这是在实验设计的过程中要认真考虑的问题。 1 实验选题 交流电路中的功率有两种:有功功率和无功功率。有功功率是保持用电设备正常运行所需的电功率,也就是将电能转化为其它形式的能量的电功率。有功功率是瞬时功率在一个周期内的平均值。无功功率是用于电路内电场和磁场的