function [ Objective ] = fun(this, x )
%FUN Summary of this function goes here
%   Detailed explanation goes here
Objective=0;
SEVolt=x(1:this.Busnum);
SEVAngel=x(this.Busnum+1:2*this.Busnum);
Objective=(SEVolt-this.mVolt)'*(1./this.sigma^2*eye(length(this.mVolt)))*(SEVolt-this.mVolt);%电压
% Objective=0;
% %% 支路电流
cmpSEV=SEVolt.*exp(1j*SEVAngel); %复数电压
cmpSEBranchI=(cmpSEV(this.lineI)-cmpSEV(this.lineJ))./(this.lineR+1j*this.lineX);%复数支路电流
SEBranchI=abs(cmpSEBranchI);% 支路电流幅值
Objective=Objective+sum((SEBranchI-this.mBranchI.^2).^2./this.sigma^2);%%电流
%% 线路功率
SEBranchP=real((cmpSEV(this.lineI)-cmpSEV(this.lineJ)).*conj(cmpSEBranchI));
SEBranchQ=imag((cmpSEV(this.lineI)-cmpSEV(this.lineJ)).*conj(cmpSEBranchI));
Objective=Objective+sum((SEBranchP-this.mBranchP).^2/this.sigma^2);
Objective=Objective+sum((SEBranchQ-this.mBranchQ).^2/this.sigma^2);
%% 变压器
newwordParameter=this.newwordParameter;
cmpY=this.cmpY;
transP=TransPower( newwordParameter,cmpY,SEVolt,SEVAngel );
Objective=Objective+sum((transP-this.mTransP).^2/this.sigma^2);
transQ=TransReactivePower( newwordParameter,cmpY,SEVolt,SEVAngel );
Objective=Objective+sum((transQ-this.mTransQ).^2/this.sigma^2);
%% 0注入节点
PQ=diag(cmpSEV)*conj(this.cmpY*cmpSEV);
%% 发电机注入功率
% Objective=Objective+(this.mPG(this.onlyPG)-real(PQ(this.onlyPG)))'*(1./this.sigma^2*eye(length(this.mPG(this.onlyPG))))*(this.mPG(this.onlyPG)-real(PQ(this.onlyPG)));
% Objective=Objective+(this.mQG(this.onlyQG)-imag(PQ(this.onlyQG)))'*(1./this.sigma^2*eye(length(this.mQG(this.onlyQG))))*(this.mQG(this.onlyQG)-imag(PQ(this.onlyQG)));
end