LineDistFZBusIEDNetworkABCLPRHalf of the loopIVV02725Figure 50: Resistive reach of phase elementsThe setting Rx Ph. Resistive defines the complete loop resistive reach RLP of the Distance Protection.Since a phase-to-phase distance element measures half of the loop, the right-hand resistive reach R, of thecharacteristic is equal to half of the setting value.R = ½ Rx Ph. Resistive+R+jXV02724ZV / I - RV / IRÐ ZFigure 51: Resistive Reach line constructionFor all V/I vectors which are on the left side of the right blinder the following condition is true:Ð (V/I - R)£ Zor Ð (V - I.R)£ Ð I. ZThe two signals provided to the comparator are:S1 = V - I.RS2 = I.ZChapter 7 - Distance Protection P446SV128 P446SV-TM-EN-1
