摘要
为优化无源滤波器的参数配置,尽可能地提高其滤波和无功补偿的综合效果,节约投资,以过电压、过电流和容量平衡3个校验条件为依据,对无源滤波电容器的容量和电压关系式求导,推导出滤波电容器的最小容量和额定电压之间的关系。通过作图对比分析,得出滤波电容器参数选择的基本原则。对于兼顾无功补偿的无源滤波器设计,给出了滤波电容器额定容量和额定电压的选择方法,并对无源滤波器的阻抗频率特性曲线和实际能提供的无功补偿容量进行了分析和计算。结果表明,在同时满足上述3个校验条件下,利用该方法选择无源滤波电容器的额定容量和额定电压,可以有效地提高无源滤波器的无功补偿容量和滤波效果,同时也有利于降低造价。
In order to optimize the parameters of passive filters and improve the efficiency of filtering and reactive power compensation for investment- saving,the relationship between the minimum capacity and the rated voltage of passive filter capacitors is derived based on three verification conditions of overvohage, overcurrent and capacity balance. The fundamental principles of passive filter capacitor parameter selection are concluded by the comparative analysis of figures. The way to select the rated capacity and vohage of capacitor is given for the design of passive filter,which is also used for reactive power compensation,and its impedance-frequency characteristic curve is analyzed and its reactive power compensation capacity actually supplied is calculated. Results show that,with the selected capacitor parameters by the proposed way,the efficiency of filtering and reactive power compensation is improved and the cost is lowered while three verification conditions are satisfied.
出处
《电力自动化设备》
EI
CSCD
北大核心
2009年第7期93-96,共4页
Electric Power Automation Equipment
关键词
谐波
无源滤波器
电容器
无功补偿
校验条件
补偿容量
滤波效果
harmonic
passive filter
capacitor
reactive power compensation
verification condition
compensation capacity
filtering efficiency
