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1无功功率在交流电路中,由电源供给负载的电功率有两种;一种是有功功率,一种是无功功率。有功功率是保持用电设备正常运行所需的电功率,也就是将电能转换为其他形式能量(机械能、光能、热能)的电功率。比如:5.5千瓦的电动机就是把5.5千瓦的电能转换为机械能,带动水泵抽水或脱粒机脱粒;各种照明设备将电能转换为光能,供人们生活和工作照明。有功功率的符号用P表示,单位有瓦(W)、千瓦(kw)、兆瓦(MW)。
A reactive power In the AC circuit, the power supplied by the power supply has two kinds of power; one is active power, one is reactive power. Active power is required to maintain the normal operation of electrical equipment, that is, to convert electrical energy into electrical energy of other forms of energy (mechanical energy, light energy, thermal energy). For example: 5.5 kilowatts of the motor is to convert 5.5 kilowatts of electrical energy into mechanical energy, driven pump pumping or threshing machine threshing; a variety of lighting equipment to convert electrical energy into light for people’s lives and work lighting. The symbol of active power is represented by P in watts (W), kilowatts (kW), megawatts (MW).