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function H = makePTDF(baseMVA, bus, branch, slack) %MAKEPTDFDC Builds the DC PTDF matrix for a given choice of slack. % H = makePTDF(baseMVA, bus, branch, slack) returns the DC PTDF % matrix for

function a = gcall(a) global Bus DAE if ~a.n, return, end V1 = DAE.V(a.bus1); V2 = DAE.V(a.bus2); a1 = DAE.a(a.bus1); a2 = DAE.a(a.bus2); vp = DAE.x(a.vp); vq = DAE.x(a.vq); iq = DAE.

function fm_ncomp % FM_NCOMP search components used in the current data % file and initializes fields used for power % flow computations. % % CHECK = FM_NCOMP % %see also FM_S

function Fxcall(a) global DAE Bus if ~a.n, return, end iTf = 1./a.con(:,5); Kv = a.con(:,12); DAE.Fx = DAE.Fx + sparse(a.x,a.x,-iTf,DAE.n,DAE.n); DAE.Fy = DAE.Fy + sparse(a.x,a.bus+Bus.n

function Gycall(a) global Bus DAE if ~a.n, return, end V1 = DAE.V(a.bus); Tf = a.con(:,5); Plz = a.con(:,6); Pli = a.con(:,7); Qlz = a.con(:,9); Qli = a.con(:,10); Kv = a.con(:,12); V1

function fm_pl(flag) % FM_PL define Polinomial Loads % % FM_PL(FLAG) % FLAG -> 0 initialization % FLAG -> 1 algebraic equations % FLAG -> 2 algebraic Jacobians % %Author:

function fex_nrloop(tol,itermax) % FEX_NRLOOP -> called by FEX_ABCD % Perform Newton Raphson for non linear algebraic equation % solution % % Author: Alberto Del Rosso % Date: June 2004 %

function gcall(a) global Bus DAE if ~a.n, return, end DAE.gq = DAE.gq - sparse(a.bus,1,DAE.x(a.ist).* DAE.V(a.bus),Bus.n,1);

function Gycall(a) global Bus DAE if ~a.n, return, end DAE.J22 = DAE.J22 - sparse(a.bus,a.bus,DAE.x(a.ist),Bus.n,Bus.n);

function gcall(a) global Bus DAE if ~a.n, return, end V = DAE.V(a.bus); B = bsvc(a); DAE.gq = DAE.gq + sparse(a.bus,1,-B.*V.*V,Bus.n,1);