高压电器2012，Vol.48Issue(6)：1-6,6.
基于改进半波傅氏算法的故障电流相控开断零点预测研究
Zero-cross Point Prediction of Short Circuit Current for Phase Controlled Interruption Based on Improved Half-wave Fourier Algorithm
摘要
Abstract
Rapid extraction of fault current parameters for predicting the zero-cross point of the fault current is a premise in phase controlled interruption of fault current. In this paper, an improved half-wave Fourier algorithm is presented. By adding two extra sampling points and shifting data processing window twice, the algorithm can extract the initial value and time constant of the decaying DC component, and can also extract the amplitudes and phases of the fundamental wave and three-order wave to implement prediction of zero-cross point of fault current. Calculation and MATLAB simulation show that the improved half-wave Fourier algorithm can quickly realize zero-cross point prediction of fault current with errors less than ±1 ms.关键词
故障电流/相控开断/零点预测/改进半波傅氏算法Key words
fault current/ phase controlled interruption/ zero-cross point prediction/ improved half-wave Fourier algorithm分类
信息技术与安全科学引用本文复制引用
罗楚军,袁召,尹小根,何俊佳,陈轩恕,潘垣..基于改进半波傅氏算法的故障电流相控开断零点预测研究[J].高压电器,2012,48(6):1-6,6.基金项目
国家电网公司重点科研项目(SG0846) （SG0846）
国家科技部支撑计划(2009BAA19B00). （2009BAA19B00）
