摘要
针对10 kV配电网系统安装的电磁式电压互感器(PT)会产生铁磁谐振现象等问题,提出了一种以ARM7高速微处理器为核心的控制系统。即在PT二次开口三角串入一晶闸管,当系统发生PT铁磁谐振时,由于ARM7微处理器的高速处理性能,可以快速响应并处理开口三角的谐振电压信号,实时控制晶闸管的导通,从而打破造成PT铁磁谐振的条件,进而对产生的PT铁磁谐振进行有效抑制。
For the phenomenon of PT ferromagnetic resonance of 10 kV distribution network,which is a common form in power system,one control system is proposed takes ARM7 fast Micro-processor as the core,that is one thyristor is connected with PT's second open side. When the phenomenon of ferromagnetic resonance appears,the ARM7 Micro-processor can quickly response and process the resonance voltage signals at the open triangle with fast processing performance. The thyristor conduction is controlled real time and breaks the condition that causes PT ferromagnetic resonance,which effectively restrain the PT ferromagnetic resonance.
出处
《煤矿机电》
2014年第3期56-58,共3页
Colliery Mechanical & Electrical Technology
