高压电器2011，Vol.47Issue(1)：5-9,5.
两种故障电流相控开断电流零点预测算法对比
Comparison between Two Methods of Zero-cross Point Prediction for Controlled Fault Current Interruption
摘要
Abstract
For controlled fault current interruption, rapid prediction of zero-cross point of objective current is a key factor, however a difficult problem. Two major rapid algorithms for predicting the zero-cross point, i.e. the safe-point algorithm and the adaptive self-checking algorithm, were hence proposed. This paper discussed the two algorithms via theoretical analysis and simulation. A single-phase short circuit fault current model was established to analyze and compare the suitability of two algorithms. The results show that for the short circuit fault current model. without harmonics, the adaptive self-checking algorithm can predict the zero-cross point of objective current with higher precision, and for the short circuit fault current model with harmonics, the safe-point algorithm works easier and can achieve better waveform.However, both algorithms can only be applied to the system with single-phase fault.关键词
故障电流/相控开断/零点预测/安全点算法/自适应算法Key words
fault current/ controlled interruption/ zero-cross point prediction/ safe-point algorithm/adaptive self-checking algorithmld分类
信息技术与安全科学引用本文复制引用
段雄英,黄智慧,李蕊,邹积岩..两种故障电流相控开断电流零点预测算法对比[J].高压电器,2011,47(1):5-9,5.基金项目
国家自然科学基金资助项目(50877006) （50877006）
"十一五"国家科技支撑计划资助项目(2009BAA19B03) （2009BAA19B03）
国家电网公司科技攻关项目(SG0846). （SG0846）
