摘要
介绍并联电容器装置参数的工程选择计算方法。在掌握变电站与谐波相关资料的前提下,先确定装设电容器后的谐波放大水平,初步选择一种能满足谐波放大界限的最小电抗率,再根据系统参数进行电网谐波电压和电容器的过负荷计算,当二者都满足要求时,则所选电抗率合适,否则须加大电抗率重新计算,直到满足要求为止。通过两个实例,对计算方法作了具体说明。
This paper introduces engineering methods of choosing and calculating parameters for the installation of shunt capacitors. On the precondition of mastering the relevant information about the substation and harmonic, the magnified level of the harmonic will be decided firstly after the installation of the capacitors, then the minimum reactance ratio which could comply with the harmonic magnified limit will be chosen preliminary. After that, the overload of the network harmonic voltage and capacitor will be calculated according to the system parameters. If the two results could comply with the requirement, the preliminary reactance ratio is proven to be suitable. Otherwise, the hamonic voltage and overload will be re-calculated at a larger reactance ratio until the requirement is satisfied. The calculation method is described in detail through the two real cases.
出处
《供用电》
2009年第4期9-14,51,共7页
Distribution & Utilization
关键词
并联电容器装置
串联电抗器
谐波
电抗率
installation of shunt capacitor
series reactor
harmonic
reactance ratio
