function Lz=FormLz(Loadi)
% VoltL=sparse(0.8*ones(Busnum,1));
% PDL=sparse(-2*ones(length(Loadi),1));
% QDL=sparse(-2*ones(length(Loadi),1));
% t1=[PDL;
%     QDL;
%     VoltL
%     ];
% t2=Mat_G-Init_L-t1;
% Lz=t2;
Lz=-0.1*sparse(ones(length(Loadi)*2,1));
end