计算机测量与控制
計算機測量與控製
계산궤측량여공제
COMPUTER MEASUREMENT & CONTROL
2010年
1期
48-50,54
,共4页
电能质量扰动%旋转向量法%检测%分割
電能質量擾動%鏇轉嚮量法%檢測%分割
전능질량우동%선전향량법%검측%분할
power quality disturbance%rotating vector method%detection%segmentation
电能质量扰动的检测与分割,是电能质量监测和数据记录的必要步骤;在分析3个相邻采样点三角特性的基础上,提出了旋转向量法的暂态电能质量扰动检测分割方法,并推导出的瞬时扰动量、瞬时幅值和瞬时相位的表达式,从而检测出扰动事件的起止时间和持续时间,并实现扰动的分割;仿真结果显示,该旋转向量法能对电压凹陷、电压凸起、暂态振荡和瞬时脉冲等多种暂态电能质量扰动实现有效检测分割;该方法误差小,且实时性好,是一种有效的电压扰动事件分割方法.
電能質量擾動的檢測與分割,是電能質量鑑測和數據記錄的必要步驟;在分析3箇相鄰採樣點三角特性的基礎上,提齣瞭鏇轉嚮量法的暫態電能質量擾動檢測分割方法,併推導齣的瞬時擾動量、瞬時幅值和瞬時相位的錶達式,從而檢測齣擾動事件的起止時間和持續時間,併實現擾動的分割;倣真結果顯示,該鏇轉嚮量法能對電壓凹陷、電壓凸起、暫態振盪和瞬時脈遲等多種暫態電能質量擾動實現有效檢測分割;該方法誤差小,且實時性好,是一種有效的電壓擾動事件分割方法.
전능질량우동적검측여분할,시전능질량감측화수거기록적필요보취;재분석3개상린채양점삼각특성적기출상,제출료선전향량법적잠태전능질량우동검측분할방법,병추도출적순시우동량、순시폭치화순시상위적표체식,종이검측출우동사건적기지시간화지속시간,병실현우동적분할;방진결과현시,해선전향량법능대전압요함、전압철기、잠태진탕화순시맥충등다충잠태전능질량우동실현유효검측분할;해방법오차소,차실시성호,시일충유효적전압우동사건분할방법.
For power quality (PQ) monitoring and recordings, it is essential to partition the data into segments. With analysis of charac-teristics of three neighboring voltage samples, a new PQ disturbance detection and segmentation method, named as rotating vector method, is proposed in this paper. The method could extract the instantaneous magnitude, instantaneous phase and instantaneous disturbance, and thus get the starting and ending time of the PQ event. Finally the method realized to partition the data into segments. Simulation results shows good performance of the method in accuracy and speed.
