摘要
提出一种基于注入恒频信号的对地分布电容计算方法和一种综合的消弧线圈跟踪补偿调节判据.在配电系统运行过程中,利用消弧线圈二次侧定时向系统注入一个检测信号,通过对其进行采集、分析和计算,得出系统对地分布电容和脱谐度,并根据脱谐度的大小对消弧线圈实施调节.模拟实验表明,所提方法能够精确计算电网的对地电容容抗,还能够在避免频繁调节的情况下保证脱谐度绝对值最小,从而实现精确跟踪补偿.
An on-line measurement method of shunt capacitance of distribution power system （ DPS ） based on injection signal and a synthetical auto-tuning criterion of arc suppression coil （ASC） were presented. Auxiliary measurement signal was injected to the DPS through the ASC in a certain time period during normal operation procedure of the DPS. The shunt capacitance and the off-resonance degree of the DPS could be calculated by detecting the injected signal. And then ASC auto-tuning control could be implemented according to the off-resonauce degree. Simulation test showed that the presented method can measure the shunt capacitance accurately and can get a minimum absolute value of the off-resonance degree without frequent regulation of the ASC.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2008年第3期326-330,共5页
Journal of Tianjin University(Science and Technology)
基金
中国博士后基金资助项目(20070410755)
关键词
注入信号
对地电容
消弧线圈自动调谐
脱谐度
injection signal
shunt capacitance
auto-tuning of ASC
off-resonance degree
