摘要
在中性点不接地配电系统中,由于电磁式电压互感器(PT)励磁电感的非线性特性曲线,会在一定条件下产生铁磁谐振,影响系统的安全运行。以风力发电系统为例,对风力发电系统的发电机理、风力发电的特点、谐波的产生及危害等以及消谐的措施进行分析。认为在众多消谐措施中PT一次侧中性点接消谐器和选用励磁特性曲线饱和度较高的电磁式电压互感器(PT)的方式是比较好的消谐方法。
In neutral point grounding power distribution system, the electromagnetic voltage transformer（PT） excitation inductance of the nonlinear characteristic curve, can under certain conditions,the ferroresonance influence safe operation of the system. Based on the wind power generation system as an example, the generation mechanism of wind power gener- ation system, the characteristics of wind power, the production and harm of harmonic and harmonic elimination measures are analyzed. Think in numerous harmonic elimination measures VI＇ primary side neutral harmonic elimination device and choose excitation characteristic saturation higher electromagnetic voltage transformer（PT） is a good method for harmonic elimination.
出处
《电气开关》
2015年第3期99-100,105,共3页
Electric Switchgear
关键词
风力发电
铁磁谐振
电磁式电压互感器
消谐措施
wind power generation
ferroresonance
electromagnetic voltage transformer
harmonic elimination measures
