【摘要】 一般玻璃工厂在谐波含量没有超过国标的情况下做无功补偿时,应考虑谐波电流在某次谐波频率下发生谐振的可能性,因为谐振的发生会使谐波电流大幅度增大,不仅危害电容器,同时对负载和电网产生严重的损坏。所以,在系统存在谐波的情况下做无功补偿时,一定要用调谐滤波器,使其在基波频率下做无功补偿,在谐波频率下表现电感性,避免发生谐振,并且滤除部分谐波。更多还原

【Abstract】 The resonance occurring possibility of harmonic current with a harmonic frequency must be considered when reactive compensation was done under the condition of harmonic content less than the national standard permitting value because the resonance may great amplify harmonic current which will damage capacitor and load or even power network.For these reasons the tuned filter must be used when the reactive compensation is done at the existing of system harmonic so as to fulfill the following tasks:do reactive compensation under fundamental frequency,show inductive character under harmonic frequency,avoid occurrence of resonance,filter part of the harmonic.更多还原