function deltdeltF=func_deltdeltF(Busnum,GenC,PVi,PGi)

ContrlCount=size(PVi,1)+size(PGi,1)+Busnum*2; %P,Q,Volt theta这些控制变量数
deltdeltF=[diag(GenC(:,2))*2,zeros(size(GenC,1),ContrlCount-size(GenC,1));
    zeros(ContrlCount-size(GenC,1),ContrlCount);
    ]; %#ok<NASGU>
 sizeGenC=size(GenC(:,2),1);
diagC=sparse(1:sizeGenC,1:sizeGenC,GenC(:,2),sizeGenC,sizeGenC);
deltdeltF=[
    diagC*2,sparse(sizeGenC,ContrlCount-sizeGenC);
    sparse(ContrlCount-sizeGenC,ContrlCount);
    ];

end