电力系统保护与控制2011，Vol.39Issue(9)：102-107,6.
电力变压器铁磁谐振检测方法研究
Research on the power transformer ferroreonance detection algorithm
摘要
Abstract
Based on the features of the current distortion during power transformer ferroresonance, this paper proposes a novel ferroresonance detection scheme.The scheme adopts the Iow current power frequency component which is smaller than the set thresholds and the maximum value of current which exceeds the set thresholds as start elements, determines the spike characteristics using the duty cycle detection of sharp spike and long dead angle to identify the occurrence of ferroresonance, and discerns the mode of the ferroresonance by analysis of the spikes intervals statistical regularity.The paper analyzes the differences between ferroresonance and inrush current, raising a symmetrical dead angle detection method to distinguish ferrorcsonance from inrush current.Through simulation tests, the detection scheme proves to be effective and reliable.关键词
电力变压器/铁磁谐振/在线检测/电流检测/间断角检测Key words
power transformer/ ferroresonance/ online detection/ current detection/ dead angle detection分类
信息技术与安全科学引用本文复制引用
李旭洋,董新洲,薄志谦..电力变压器铁磁谐振检测方法研究[J].电力系统保护与控制,2011,39(9):102-107,6.基金项目
国家自然科学基金重点基金资助项目(50937003) （50937003）
清华大学电力系统国家重点实验室重点基金资助项目(SKLD09M04) （SKLD09M04）
