强谐波环境下的无功功率补偿技术  

Reactive Power Compensation under Strong Harmonic

作　　者：王锋[1] 强顺义[1] 

机构地区：[1]陕西凌云电器集团有限公司机动能源处,陕西宝鸡721006

出　　处：《电子科技》2011年第7期21-23,共3页Electronic Science and Technology

摘　　要：非线性功率用电设备产生谐波电流,导致电磁干扰、功率因数降低,由电容器、串联电抗器组成的谐波滤波装置具有谐波滤除和无功补偿两大功能。工作时不会像传统电容器组补偿那样,在提高功率因数的同时对高次谐波进行放大,而是对谐波进行吸收,提高电源质量。在电抗性补偿系统里,根据需要被补偿的功率计算得出电容,串联谐振电路的串联谐振频率由电抗确定,谐振频率必须低于可能出现的最低次谐波。The nonlinear power electric device generates harmonic current that will make EMI and reduce power factor.The harmonic filtering equipment composed of condenser and in-line reactor has the functions of harmonic filtering reactive compensation.Unlike the traditional condenser set which increases the power factor and amplifying higher harmonic meanwhile under operation,harmonic filtering equipments absorb the harmonic and improve the quality of power supply.In the reactive compensation system,the capacitance shall be calculated according to the power to be compensated,and the in-line resonant frequency in series resonant circuit will be determined by the resistance.The resonant frequency must be less than the min sub harmonic that may happen.

关 键 词：谐波 单调谐无功补偿装置 串电抗谐波滤波装置 

分 类 号：TN911.6[电子电信—通信与信息系统]