Question

power system
A single-circuit 60-Hz high voltage power transmission line is 370 km (230 mi) long. The conductors are Rook with flat horizontal configuration and 7.25 ms=(23.8 ft.) conductor spacing. The load on the line is 125 MW at 100% power factor. Use attached Tables A3 to A3to determine; The sending end voltage Vs The sending end current Is The sending end power Ps The percentage voltage regulation The transmission efficiency Given that Ds for the Rook conductor is 0.0327 ft., and its resistance is 0.1603 ohm/m ,determine; The phase inductance of the transmission line in mH / mi The line series impedance z in ohm/mi The line capacitance Cn The line shunt admittance y in ohm-1/nti Compare the parameters obtained to the tabulated values Repeat Problem (1) using the per-unit system. 4. A single-circuit 60-Hz high voltage power transmission line is 181 km (112.5 mi) long. The conductors are Dove with flat horizontal configuration and 7.25 m (23.8 ft.) conductor spacing. The load on the line is 70 MW at 100% power factor. Use attached Tables A3 to A5 to determine; The ABCD constants of the line The sending end voltage Vs The sending end current Is The sending end power Ps The percentage voltage regulation The transmission efficiency Find the equivalent- n circuit (equivalent to the long TL model) for the power transmission line given in problem (1) and compare it with the nominal- n circuit model calculate the % difference of the equivalent series impedance shunt reactance from the nominal- n circuit values. Please discuss your results! A short 3-phase, 34-kV power transmission line delivers a load of 10-MW at a power factor of 0.9 lagging and 34-kV. If the series impedance of the line is 10+j15 ohm / phase calculate; The ABCD constants The sending end voltage Vs The sending end current Is The percentage voltage regulation The transmission efficiency

Answer 1

clear all
clc
% m file to set line data
LineData
% Per unit length parameters
[Zg,Zt,Zc,Yg,ZL,YL] = LineParameters(Mu,Eo,Rsu,Geom,Ncon,Ns,w);
% Modal Parameters
for k=1:Ns
[Yc(:,:,k),Vm(k,:),Hm(k,:)] = ABYZLM(ZL(:,:,k),YL(:,:,k),lenght,w(k));
end
% Characteristic Admittance Fitting
[YcPoles,YcResidues,YcConstant,YcProportional] = YcFit(Yc,f,Ns,Ncon);
% Hk fit
[HkPoles,HkResidues,HkConstant,HkProportional,md] =
HkFitTrace(Hm,Vm,ZL,YL,f,Ns,lenght,Ncon);
% m file to execute simulation loop.
SimulationLoop
Code to Load LineData
% Line Geometry
% column 1