摘要
为利于消弧线圈自动调谐,提出了一种电力系统电容电流检测方法,即向消弧线圈二次侧线圈注入变频小电流,寻找系统对地电容与消弧线圈励磁电抗的谐振频率,可直接计算出系统对地电容值。此法用于磁通补偿消弧线圈时,不增加系统硬件成本,并可直接得到调节消弧线圈电抗值所需的重要参数—电流补偿系数α。
A new method to measure capacitive current of power network based on injecting various frequency currents is presented. It can get all required parameters to compensate capacitive current by injecting a various frequency currents to the secondary coils of the reactor and then search the resonance frequency of the capacitance and the excitation impedance of the reactor. When this method is applied to the ARC based on magnetic flux compensation, it do not need the additional hardware and can get the parameter α directly, which is important for adjust the impedance of the reactor.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2005年第3期36-38,共3页
High Voltage Engineering
关键词
消弧线圈
注入信号
电容检测
DSP
arc-suppression coil
injecting signal
capacitance measure
DSP
