Hello Ryan Brown1 (3460875) , According to formula given in TIDM-THDREADING . Please can help me out with following things 1>Vrms = Kv * (sqrt (SUM (Vph)^2 / Sample Count)) Page 10 in TIDM-THDREADING Formulea (3.2.2.1.1(1)) Vrms = 230 V in normal case and also I've obtained the same. You can check in excel file on above message. 2> Formulea 3.2.2.1.2(17) Page no. 12 V fund,ph = Kv *(SUM(Vpure(n) ́* Vph(n))) / Sample Count Here V fund,ph = 47260.1348892729 One question is 1] V fund,ph = Kv *(SUM(Vpure(n) ́* Vph(n))) / Sample Count OR 2] V fund,ph = Kv *sqrt((SUM(Vpure(n) ́* Vph(n))))/ Sample Count 3> Formulea 3.2.2.1.2 (21) Page no. 13 IEC : V _ THD ph = sqrt(Vrms^2 - V fund,ph^2)/V fund,ph IEEE : V _ THD ph = Vrms^2 - V fund,ph^2/V fund,ph ^2 In Case 2] mentioned in 2> if that formula is correct I am getting THD nearby IEEE value. Please help Thanks Abhishek Parikh
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