Electrical Energy Transmission
Consider the situation shown in rate of electrical energy flow(power)from netw, by which an electric circuit or equipment is connected to the earth, or to some conducting body of relatively large extent that serves in place of the earth. Note: It is used for establishing and maintaining the potential of the earth (or of the conducting body) or approximately that potential, on conductors connected to it ,and for conducting ground current to and from the earth(or the conducting body).
We understand this to mean that at a given location in the power system, accessible parts of power apparatus and earth constitute an equipotential surface when perfectly grounded. Insulation of conductors from ground is a basic problem.
Let us consider some different schemes for implementing the transmission line indicated in Figure 1. For a fair comparison we select constrainst that all schemes must satisfy we allow any number of conductors to be used ,as long as each scheme uses the same amount of conducting material, Given that networks A and B are separated by a fixed physical length this means that in viewing the limes in cross section we must observe the same cross-sectional conducting area (A) for all schemes. Also, we argue that no conductor shall carry current greater than that constrained by some maximum current density .
We require that at lea
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