基于对称分量滤过器的三相电压不平衡度检测

随着我国经济的蓬勃发展,电力网负荷急剧加大,特别是冲击、非线性负荷容量的不断增长,使得电网发生电压波形畸变、电压波动、闪变和三相不平衡等电能质量问题.电力系统运行时三相电路经常出现不平衡状态.由于三相严重不平衡会造成巨大的危害,而正常运行时允许有一定的轻度不平衡,因此对三相电力系统的不平衡度检测十分必要,它是管理者制定...

Three-phase Voltage Unbalance Detection Based on Symmetrical Component Filter

With the vigorous development of our country economy,the electric power network loads enlarge suddenly.Especially because of the impact and misalignment loading capacity’s sustained growth,many electrical energy quality problems appear in the electrical network,such as the voltage waveform distortion,the voltage hunting,the flickering and three-phase unbalance and so on.When electrical power system works,the three-phase circuit has the non-balance state frequently.Serious three-phase unbalance will cause huge harm,but normally there can be certain mild unbalance.Unbalance detection aim at three-phase electrical system is very essential.The three-phase voltage unbalance detection methodis proposed,which based on symmetrical component filter.And make out a simulation about detection procedure and result,it proves the detection method’s practicability and reliability.