Hi, anyone could explain what exact the "shunt susceptance" and "shunt conductance" are? and what's the difference between shunt susceptance and line charging susceptance? In power system analysis, shunt susceptance and shunt conductance are bus elements. Whereas the line charging susceptance is an element of transmission line (pi-model) in formulation of Y-bus. Shunt susceptance and line charging susceptance are also separated as different element for bus and branch indices respectively in most power analysis software such as matpower. However, I've read some book such as "Modelling and Analysis of Electric Power Systems" by Göran Andersson which uses shunt susceptance Ysh to form the Y-bus matrix. thanks.