pes2014-wronglowervoltagebound/func_deltG.m

function deltG=func_deltG(Busnum,PVi,PGi,Loadi,PD,QD)
%%

sizeLoadi=size(Loadi,1);
%%


%%
dg3_dPD=sparse(1:size(Loadi,1),1:size(Loadi,1),ones(size(Loadi,1),1),size(Loadi,1),size(Loadi,1));
dg4_dPD=sparse(size(Loadi,1),length(Loadi));
dg5_dPD=sparse(size(Loadi,1),Busnum);
%% 
dg3_dQD=sparse(length(Loadi),length(Loadi));
dg4_dQD=sparse(1:size(Loadi,1),1:size(Loadi,1),ones(size(Loadi,1),1),size(Loadi,1),size(Loadi,1));
dg5_dQD=sparse(size(Loadi,1),Busnum);

%% 
dg3_dx=sparse(2*Busnum,sizeLoadi);
dg4_dx=sparse(2*Busnum,length(Loadi));
dg5_dx=[sparse(1:Busnum,1:Busnum,ones(Busnum,1),Busnum,Busnum);
    sparse(Busnum,Busnum);
    ];
%% 

deltG=[dg3_dPD,dg4_dPD,dg5_dPD;
       dg3_dQD,dg4_dQD,dg5_dQD;
       dg3_dx,dg4_dx,dg5_dx;
];
end