公开(公告)号：US08271215B2

公开(公告)日：2012-09-18

申请号：US12598341

申请日：2008-04-30

申请人： Navarro Antonio Cazorla ,  Garcia José Giner ,  Martinez Vicente Leon ,  Romeu Joaquín Montañana

发明人： Navarro Antonio Cazorla ,  Garcia José Giner ,  Martinez Vicente Leon ,  Romeu Joaquín Montañana

IPC分类号： G01R21/00

CPC分类号： G01R29/16 ,  G01R21/00 ,  G01R35/007

摘要： Method and practical use system for measuring the imbalance potential of an electrical installation or system comprising: i) acquiring instantaneous values of voltage (vA, vB, vC) and electrical intensity (iA, iB, iC) of each of the phases A, B, C of the installation, and breaking them down into their fundamental frequency components (vA1, vB1, vC1), (iA1, iB1, iC1); ii) obtaining effective voltage and intensity values and angles for initial phase difference between voltage and intensity, and, starting from these effective values obtaining active powers (PA, PB, PC) and reactive (QA, QB, QC) potentials for each of the phases; iii) from the active and reactive potentials, obtaining (4) a phasor imbalance potentials (ĀU) according to the following expression: ĀU=√{square root over (2)}( p·|PA+a2PB+aPC|+ q·|QA+a2QB+aQC|) where a=1|120° and p and q are orthogonal unit phasors. The invention also relates to a device for calibrating (21) instruments for measurement instruments of this imbalance power.

摘要翻译： 用于测量电气设备或系统的不平衡潜力的方法和实际使用系统，包括：i）获取每个相A，B的电压（vA，vB，vC）和电强度（iA，iB，iC）的瞬时值 ，C，并将其分解为其基本频率分量（vA1，vB1，vC1），（iA1，iB1，iC1）; ii）获得电压和强度之间的初始相位差的有效电压和强度值和角度，并且从这些有效值开始，获得每个的每个的有效功率（PA，PB，PC）和无功（QA，QB，QC）电位 阶段 iii）从有功和无功电位，根据以下表达式获得（4）相量不平衡电位（ĀU）：ĀU=√（2）中的平方根}（p·| PA + a2PB + aPC | + q· | QA + a2QB + aQC |）其中a = 1 | 120°，p和q是正交单位相量。 本发明还涉及一种用于校准（21）用于该不平衡功率的测量仪器的仪器的装置。