摘要
无功补偿的难点在于如何补偿三相不平衡以及如何有效地滤除低次谐波,尤其是2次谐波。笔者提出了一种基于瞬时值的SVC无功及负序补偿算法,将补偿网络分为正序和负序,分别用于校正功率因数和补偿三相不平衡。不同于传统的利用向量进行推导的方法,该算法利用瞬时值计算补偿电抗,并给出了对比仿真波形图,与向量计算的方法比较,证明该算法比较简单和方便。
How to deal with three-phase unbalance compensation and how to filter the low-order harmonics,especially the2nd-order,are the two difficulties for reactive power compensation.A new algorithm is presented based on instantaneous valve in this paper.The positive sequence compensation network is used for power factor compensation and the negative one is for unbalance compensation.Different from the traditional vector method,this algorithm uses instantaneous value to compute the compensation reactance.The proposed method is verified by the analysis of the simulation waveform.Compared with other methods,the presented one is more simple and convenient.
出处
《高压电器》
CAS
CSCD
北大核心
2004年第4期247-249,252,共4页
High Voltage Apparatus
关键词
SVC
正序补偿
负序补偿
瞬时值
SVC
positive sequence compensation
negative sequence compensation
instantaneous value
