function [ out_arg ] = equ(this, x )
%EQU Summary of this function goes here
%   Detailed explanation goes here
SEVolt=x(1:this.Busnum);
SEVAngel=x(this.Busnum+1:2*this.Busnum);
cmpSEV=SEVolt.*exp(1j*SEVAngel); %Έ΄Κύ΅ηΡΉ
PQ=diag(cmpSEV)*conj(this.cmpY*cmpSEV);
% Constraints=[SEVAngel(Balance)==0,PQ(zerosInjectionIndex)==0];
out_arg=[real(PQ(this.zerosInjectionIndex));imag(PQ(this.zerosInjectionIndex));];

out_arg=[out_arg;x(this.Busnum+this.Balance)];
end