function Lz=FormLz(Mat_G,Init_L,GenL,Busnum,PVQL,PD0,Loadi)

PL=1*GenL(:,2);%发电机有功下界
QL=PVQL(:,1);%发电机无功下界
VoltL=0.9*ones(1,Busnum);
PDL=PD0(Loadi);
PDL(PDL>0)=0.8*PDL(PDL>0);
PDL(PDL<0)=1.2*PDL(PDL<0);
PDL(PDL==0)=-.2;
t1=([PL',QL',PDL',VoltL])';
t2=Mat_G-Init_L'-t1;
Lz=t2;

end