REAL BUS_get_total_reg_gen_Qmin(Bus* bus) {
Gen* gen;
REAL Qmin = 0;
if (!bus)
return 0;
for (gen = bus->reg_gen; gen != NULL; gen = GEN_get_reg_next(gen))
Qmin += GEN_get_Q_min(gen);
return Qmin;
}
void HEUR_PVPQ_apply_step(Heur* h, Constr* clist, Net* net, Branch* br, int t, Vec* var_values) {
// Local variables
Vec* f;
Mat* A;
Vec* b;
Bus* bus[2];
Gen* gen;
char* bus_counted;
Heur_PVPQ_Data* data;
char* reg_flag;
int bus_index_t[2];
int k;
int i;
Constr* pf;
Constr* fix;
REAL v;
REAL v_set;
REAL Q;
REAL Qmax;
REAL Qmin;
char switch_flag;
int j_old;
int j_new;
REAL b_new;
int T;
int num_buses;
// Num periods
T = BRANCH_get_num_periods(br);
// Num buses
num_buses = NET_get_num_buses(net);
// Heur data
bus_counted = HEUR_get_bus_counted(h);
data = (Heur_PVPQ_Data*)HEUR_get_data(h);
reg_flag = data->reg_flag;
// Check outage
if (BRANCH_is_on_outage(br))
return;
// Bus from data
bus[0] = BRANCH_get_bus_k(br);
bus_index_t[0] = BUS_get_index(bus[0])*T+t;
// Bus to data
bus[1] = BRANCH_get_bus_m(br);
bus_index_t[1] = BUS_get_index(bus[1])*T+t;
// Power flow constraints
for (pf = clist; pf != NULL; pf = CONSTR_get_next(pf)) {
if (strcmp(CONSTR_get_name(pf),"AC power balance") == 0)
break;
}
if (!pf)
return;
// Fix constraints
for (fix = clist; fix != NULL; fix = CONSTR_get_next(fix)) {
if (strcmp(CONSTR_get_name(fix),"variable fixing") == 0)
break;
}
if (!fix)
return;
// Constr data
f = CONSTR_get_f(pf);
A = CONSTR_get_A(fix);
b = CONSTR_get_b(fix);
// Buses
for (k = 0; k < 2; k++) {
if (!bus_counted[bus_index_t[k]] && // not counted
!BUS_is_slack(bus[k]) && // not slack
BUS_is_regulated_by_gen(bus[k]) && // regulated
BUS_has_flags(bus[k],FLAG_VARS,BUS_VAR_VMAG) && // v mag is variable
BUS_has_flags(bus[k],FLAG_FIXED,BUS_VAR_VMAG) && // v mag is fixed
GEN_has_flags(BUS_get_reg_gen(bus[k]),FLAG_VARS,GEN_VAR_Q)) { // reg gen Q is variable
// Voltage magnitude
v = VEC_get(var_values,BUS_get_index_v_mag(bus[k],t));
v_set = BUS_get_v_set(bus[k],t);
// Regulating generator (first one in list of reg gens)
gen = BUS_get_reg_gen(bus[k]);
Q = VEC_get(var_values,GEN_get_index_Q(gen,t)); // per unit
Qmax = GEN_get_Q_max(gen); // per unit
Qmin = GEN_get_Q_min(gen); // per unit
// Switch flag
switch_flag = FALSE;
// Currently regulated
if (reg_flag[bus_index_t[k]]) {
// Violations
if (Q > Qmax) {
// Set data
j_old = BUS_get_index_v_mag(bus[k],t);
j_new = GEN_get_index_Q(gen,t);
b_new = Qmax;
switch_flag = TRUE;
reg_flag[bus_index_t[k]] = FALSE;
// Update vector of var values
while (gen) {
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_Q))
VEC_set(var_values,GEN_get_index_Q(gen,t),GEN_get_Q_max(gen));
gen = GEN_get_reg_next(gen);
}
}
else if (Q < Qmin) {
// Set data
j_old = BUS_get_index_v_mag(bus[k],t);
j_new = GEN_get_index_Q(gen,t);
b_new = Qmin;
switch_flag = TRUE;
reg_flag[bus_index_t[k]] = FALSE;
// Update vector of var values
while (gen) {
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_Q))
VEC_set(var_values,GEN_get_index_Q(gen,t),GEN_get_Q_min(gen));
gen = GEN_get_reg_next(gen);
}
}
}
// Previously regulated
else {
// Q at Qmin and v < v_set
if (fabs(Q-Qmin) < fabs(Q-Qmax) && v < v_set) {
Q = Q - VEC_get(f,BUS_get_index_Q(GEN_get_bus(gen))+t*2*num_buses); // per unit (see constr_PF)
if (Q >= Qmax) {
// Set data
j_old = GEN_get_index_Q(gen,t);
j_new = GEN_get_index_Q(gen,t);
b_new = Qmax;
switch_flag = TRUE;
// Update vector of var values
while (gen) {
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_Q))
VEC_set(var_values,GEN_get_index_Q(gen,t),GEN_get_Q_max(gen));
gen = GEN_get_reg_next(gen);
}
}
else if (Qmin < Q && Q < Qmax) {
// Set data
j_old = GEN_get_index_Q(gen,t);
j_new = BUS_get_index_v_mag(bus[k],t);
b_new = v_set;
switch_flag = TRUE;
reg_flag[bus_index_t[k]] = TRUE;
// Udpate vector of var values
VEC_set(var_values,j_new,b_new);
}
}
// Q at Qmax and v > v_set
else if (fabs(Q-Qmax) < fabs(Q-Qmin) && v > v_set) {
Q = Q - VEC_get(f,BUS_get_index_Q(GEN_get_bus(gen))+t*2*num_buses); // per unit (see constr_PF)
if (Q <= Qmin) {
// Set data
j_old = GEN_get_index_Q(gen,t);
j_new = GEN_get_index_Q(gen,t);
b_new = Qmin;
switch_flag = TRUE;
// Update vector of var values
while (gen) {
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_Q))
VEC_set(var_values,GEN_get_index_Q(gen,t),GEN_get_Q_min(gen));
gen = GEN_get_reg_next(gen);
}
}
else if (Qmin < Q && Q < Qmax) {
// Set data
j_old = GEN_get_index_Q(gen,t);
j_new = BUS_get_index_v_mag(bus[k],t);
b_new = v_set;
switch_flag = TRUE;
reg_flag[bus_index_t[k]] = TRUE;
// Udpate vector of var values
VEC_set(var_values,j_new,b_new);
}
}
}
// Update fix constraints
if (switch_flag) {
for (i = 0; i < MAT_get_nnz(A); i++) {
if (MAT_get_j(A,i) == j_old)
MAT_set_d(A,i,0.);
if (MAT_get_j(A,i) == j_new) {
MAT_set_d(A,i,1.);
VEC_set(b,MAT_get_i(A,i),b_new);
}
}
}
}
// Update counted flag
bus_counted[bus_index_t[k]] = TRUE;
}
}
void FUNC_REG_PQ_eval_step(Func* f, Branch* br, int t, Vec* var_values) {
// Local variables
Bus* bus[2];
Gen* gen;
int bus_index_t[2];
char* bus_counted;
REAL* phi;
REAL* gphi;
REAL Qmid;
REAL Pmid;
REAL P;
REAL Q;
REAL dP;
REAL dQ;
int k;
int T;
// Num periods
T = BRANCH_get_num_periods(br);
// Constr data
phi = FUNC_get_phi_ptr(f);
gphi = VEC_get_data(FUNC_get_gphi(f));
bus_counted = FUNC_get_bus_counted(f);
// Check pointers
if (!phi || !gphi || !bus_counted)
return;
// Check outage
if (BRANCH_is_on_outage(br))
return;
// Bus data
bus[0] = BRANCH_get_bus_from(br);
bus[1] = BRANCH_get_bus_to(br);
for (k = 0; k < 2; k++)
bus_index_t[k] = BUS_get_index(bus[k])*T+t;
// Buses
for (k = 0; k < 2; k++) {
if (!bus_counted[bus_index_t[k]]) {
// Generators
for (gen = BUS_get_gen(bus[k]); gen != NULL; gen = GEN_get_next(gen)) {
// Mid value
Qmid = (GEN_get_Q_max(gen)+GEN_get_Q_min(gen))/2.; // p.u.
Pmid = (GEN_get_P_max(gen)+GEN_get_P_min(gen))/2.; // p.u.
// Normalization factor
dQ = GEN_get_Q_max(gen)-GEN_get_Q_min(gen); // p.u.
if (dQ < FUNC_REG_PQ_PARAM)
dQ = FUNC_REG_PQ_PARAM;
dP = GEN_get_P_max(gen)-GEN_get_P_min(gen); // p.u.
if (dP < FUNC_REG_PQ_PARAM)
dP = FUNC_REG_PQ_PARAM;
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_Q)) { // Q var
// Value
Q = VEC_get(var_values,GEN_get_index_Q(gen,t));
// phi
(*phi) += 0.5*pow((Q-Qmid)/dQ,2.);
// gphi
gphi[GEN_get_index_Q(gen,t)] = (Q-Qmid)/(dQ*dQ);
}
else {
// Value
Q = GEN_get_Q(gen,t);
// phi
(*phi) += 0.5*pow((Q-Qmid)/dQ,2.);
}
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_P)) { // P var
// Value
P = VEC_get(var_values,GEN_get_index_P(gen,t));
// phi
(*phi) += 0.5*pow((P-Pmid)/dP,2.);
// gphi
gphi[GEN_get_index_P(gen,t)] = (P-Pmid)/(dP*dP);
}
else {
// Value
P = GEN_get_P(gen,t);
// phi
(*phi) += 0.5*pow((P-Pmid)/dP,2.);
}
}
}
// Update counted flag
bus_counted[bus_index_t[k]] = TRUE;
}
}
void FUNC_REG_PQ_analyze_step(Func* f, Branch* br, int t) {
// Local variables
Bus* bus[2];
Gen* gen;
int bus_index_t[2];
int* Hcounter;
char* bus_counted;
Mat* H;
int k;
REAL dv;
int T;
// Num periods
T = BRANCH_get_num_periods(br);
// Constr data
H = FUNC_get_Hphi(f);
Hcounter = FUNC_get_Hcounter_ptr(f);
bus_counted = FUNC_get_bus_counted(f);
// Check pointers
if (!Hcounter || !bus_counted)
return;
// Check outage
if (BRANCH_is_on_outage(br))
return;
// Bus data
bus[0] = BRANCH_get_bus_from(br);
bus[1] = BRANCH_get_bus_to(br);
for (k = 0; k < 2; k++)
bus_index_t[k] = BUS_get_index(bus[k])*T+t;
// Buses
for (k = 0; k < 2; k++) {
if (!bus_counted[bus_index_t[k]]) {
// Generators
for (gen = BUS_get_gen(bus[k]); gen != NULL; gen = GEN_get_next(gen)) {
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_Q)) { // Q var
dv = GEN_get_Q_max(gen)-GEN_get_Q_min(gen); // p.u.
if (dv < FUNC_REG_PQ_PARAM)
dv = FUNC_REG_PQ_PARAM;
MAT_set_i(H,*Hcounter,GEN_get_index_Q(gen,t));
MAT_set_j(H,*Hcounter,GEN_get_index_Q(gen,t));
MAT_set_d(H,*Hcounter,1./(dv*dv));
(*Hcounter)++;
}
if (GEN_has_flags(gen,FLAG_VARS,GEN_VAR_P)) { // P var
dv = GEN_get_P_max(gen)-GEN_get_P_min(gen); // p.u.
if (dv < FUNC_REG_PQ_PARAM)
dv = FUNC_REG_PQ_PARAM;
MAT_set_i(H,*Hcounter,GEN_get_index_P(gen,t));
MAT_set_j(H,*Hcounter,GEN_get_index_P(gen,t));
MAT_set_d(H,*Hcounter,1./(dv*dv));
(*Hcounter)++;
}
}
}
// Update counted flag
bus_counted[bus_index_t[k]] = TRUE;
}
}
void CONSTR_PAR_GEN_Q_analyze_branch(Constr* c, Branch* br) {
// Local variables
Bus* buses[2];
Bus* bus;
Gen* gen1;
Gen* gen2;
int* Acounter;
int* Aconstr_index;
char* bus_counted;
Vec* b;
Mat* A;
int i;
int j;
REAL Qmin1;
REAL Qmin2;
REAL dQ1;
REAL dQ2;
// Cosntr data
b = CONSTR_get_b(c);
A = CONSTR_get_A(c);
Acounter = CONSTR_get_Acounter_ptr(c);
Aconstr_index = CONSTR_get_Aconstr_index_ptr(c);
bus_counted = CONSTR_get_bus_counted(c);
if (!Acounter || !Aconstr_index || !bus_counted)
return;
// Bus data
buses[0] = BRANCH_get_bus_from(br);
buses[1] = BRANCH_get_bus_to(br);
// Buses
for (i = 0; i < 2; i++) {
bus = buses[i];
if (!bus_counted[BUS_get_index(bus)]) {
// Reactive power of regulating generators
if (BUS_is_regulated_by_gen(bus)) {
gen1 = BUS_get_reg_gen(bus);
Qmin1 = GEN_get_Q_min(gen1);
dQ1 = GEN_get_Q_max(gen1)-Qmin1;
if (dQ1 < CONSTR_PAR_GEN_Q_PARAM)
dQ1 = CONSTR_PAR_GEN_Q_PARAM;
for (gen2 = GEN_get_reg_next(gen1); gen2 != NULL; gen2 = GEN_get_reg_next(gen2)) {
Qmin2 = GEN_get_Q_min(gen2);
dQ2 = GEN_get_Q_max(gen2)-Qmin2;
if (dQ2 < CONSTR_PAR_GEN_Q_PARAM)
dQ2 = CONSTR_PAR_GEN_Q_PARAM;
VEC_set(b,*Aconstr_index,Qmin1/dQ1-Qmin2/dQ2);
if (GEN_has_flags(gen1,FLAG_VARS,GEN_VAR_Q)) {
MAT_set_i(A,*Acounter,*Aconstr_index);
MAT_set_j(A,*Acounter,GEN_get_index_Q(gen1));
MAT_set_d(A,*Acounter,1./dQ1);
(*Acounter)++;
}
else
VEC_add_to_entry(b,*Aconstr_index,-GEN_get_Q(gen1)/dQ1);
if (GEN_has_flags(gen2,FLAG_VARS,GEN_VAR_Q)) {
MAT_set_i(A,*Acounter,*Aconstr_index);
MAT_set_j(A,*Acounter,GEN_get_index_Q(gen2));
MAT_set_d(A,*Acounter,-1./dQ2);
(*Acounter)++;
}
else
VEC_add_to_entry(b,*Aconstr_index,GEN_get_Q(gen2)/dQ2);
(*Aconstr_index)++;
}
}
}
// Update counted flag
bus_counted[BUS_get_index(bus)] = TRUE;
}
}
void CONSTR_BOUND_eval_step(Constr* c, Branch* br, int t, Vec* var_values) {
// Local variables
Bus* buses[2];
Bus* bus;
Gen* gen;
Shunt* shunt;
Mat* H_array;
REAL* f;
REAL* J;
Mat* H;
int* Jcounter;
char* bus_counted;
int bus_index_t[2];
int k;
REAL u;
REAL umin;
REAL umax;
REAL du;
REAL a1;
REAL a2;
REAL b;
REAL eps;
REAL sqrterm1;
REAL sqrterm2;
int T;
// Number of periods
T = BRANCH_get_num_periods(br);
// Constr data
f = VEC_get_data(CONSTR_get_f(c));
J = MAT_get_data_array(CONSTR_get_J(c));
H_array = CONSTR_get_H_array(c);
Jcounter = CONSTR_get_Jcounter_ptr(c);
bus_counted = CONSTR_get_bus_counted(c);
// Check pointers
if (!f || !J || !Jcounter || !bus_counted)
return;
// Check outage
if (BRANCH_is_on_outage(br))
return;
// Param
eps = CONSTR_BOUND_PARAM;
// Bus data
buses[0] = BRANCH_get_bus_from(br);
buses[1] = BRANCH_get_bus_to(br);
for (k = 0; k < 2; k++)
bus_index_t[k] = BUS_get_index(buses[k])*T+t;
// Branch
//*******
// Tap ratio
if (BRANCH_has_flags(br,FLAG_BOUNDED,BRANCH_VAR_RATIO) &&
BRANCH_has_flags(br,FLAG_VARS,BRANCH_VAR_RATIO)) {
u = VEC_get(var_values,BRANCH_get_index_ratio(br,t));
umax = BRANCH_get_ratio_max(br);
umin = BRANCH_get_ratio_min(br);
du = (umax-umin > eps) ? umax-umin : eps;
a1 = umax-u;
a2 = u-umin;
b = eps*eps/du;
sqrterm1 = sqrt(a1*a1+b*b+eps*eps);
sqrterm2 = sqrt(a2*a2+b*b+eps*eps);
// f
f[*Jcounter] = a1 + b - sqrterm1; // upper
f[*Jcounter+1] = a2 + b - sqrterm2; // lower
// J
J[*Jcounter] = -(1-a1/sqrterm1);
J[*Jcounter+1] = (1-a2/sqrterm2);
// H
H = MAT_array_get(H_array,*Jcounter);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm1*sqrterm1*sqrterm1));
H = MAT_array_get(H_array,*Jcounter+1);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm2*sqrterm2*sqrterm2));
(*Jcounter)++;
(*Jcounter)++;
}
// Phase shift
if (BRANCH_has_flags(br,FLAG_BOUNDED,BRANCH_VAR_PHASE) &&
BRANCH_has_flags(br,FLAG_VARS,BRANCH_VAR_PHASE)) {
u = VEC_get(var_values,BRANCH_get_index_phase(br,t));
umax = BRANCH_get_phase_max(br);
umin = BRANCH_get_phase_min(br);
du = (umax-umin > eps) ? umax-umin : eps;
a1 = umax-u;
a2 = u-umin;
b = eps*eps/du;
sqrterm1 = sqrt(a1*a1+b*b+eps*eps);
sqrterm2 = sqrt(a2*a2+b*b+eps*eps);
// f
f[*Jcounter] = a1 + b - sqrterm1; // upper
f[*Jcounter+1] = a2 + b - sqrterm2; // lower
// J
J[*Jcounter] = -(1-a1/sqrterm1);
J[*Jcounter+1] = (1-a2/sqrterm2);
// H
H = MAT_array_get(H_array,*Jcounter);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm1*sqrterm1*sqrterm1));
H = MAT_array_get(H_array,*Jcounter+1);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm2*sqrterm2*sqrterm2));
(*Jcounter)++;
(*Jcounter)++;
}
// Buses
//******
for (k = 0; k < 2; k++) {
bus = buses[k];
if (!bus_counted[bus_index_t[k]]) { // not counted yet
// Voltage magnitude (V_MAG)
if (BUS_has_flags(bus,FLAG_BOUNDED,BUS_VAR_VMAG) &&
BUS_has_flags(bus,FLAG_VARS,BUS_VAR_VMAG)) {
u = VEC_get(var_values,BUS_get_index_v_mag(bus,t));
umax = BUS_get_v_max(bus);
umin = BUS_get_v_min(bus);
du = (umax-umin > eps) ? umax-umin : eps;
a1 = umax-u;
a2 = u-umin;
b = eps*eps/du;
sqrterm1 = sqrt(a1*a1+b*b+eps*eps);
sqrterm2 = sqrt(a2*a2+b*b+eps*eps);
// f
f[*Jcounter] = a1 + b - sqrterm1; // upper
f[*Jcounter+1] = a2 + b - sqrterm2; // lower
// J
J[*Jcounter] = -(1-a1/sqrterm1);
J[*Jcounter+1] = (1-a2/sqrterm2);
// H
H = MAT_array_get(H_array,*Jcounter);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm1*sqrterm1*sqrterm1));
H = MAT_array_get(H_array,*Jcounter+1);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm2*sqrterm2*sqrterm2));
(*Jcounter)++;
(*Jcounter)++;
}
// Volage angle (V_ANG)
if (BUS_has_flags(bus,FLAG_BOUNDED,BUS_VAR_VANG) &&
BUS_has_flags(bus,FLAG_VARS,BUS_VAR_VANG)) {
u = VEC_get(var_values,BUS_get_index_v_ang(bus,t));
umax = 2*PI;
umin = -2*PI;
du = (umax-umin > eps) ? umax-umin : eps;
a1 = umax-u;
a2 = u-umin;
b = eps*eps/du;
sqrterm1 = sqrt(a1*a1+b*b+eps*eps);
sqrterm2 = sqrt(a2*a2+b*b+eps*eps);
// f
f[*Jcounter] = a1 + b - sqrterm1; // upper
f[*Jcounter+1] = a2 + b - sqrterm2; // lower
// J
J[*Jcounter] = -(1-a1/sqrterm1);
J[*Jcounter+1] = (1-a2/sqrterm2);
// H
H = MAT_array_get(H_array,*Jcounter);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm1*sqrterm1*sqrterm1));
H = MAT_array_get(H_array,*Jcounter+1);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm2*sqrterm2*sqrterm2));
(*Jcounter)++;
(*Jcounter)++;
}
// Generators
for (gen = BUS_get_gen(bus); gen != NULL; gen = GEN_get_next(gen)) {
// Active power (P)
if (GEN_has_flags(gen,FLAG_BOUNDED,GEN_VAR_P) &&
GEN_has_flags(gen,FLAG_VARS,GEN_VAR_P)) {
u = VEC_get(var_values,GEN_get_index_P(gen,t));
umax = GEN_get_P_max(gen);
umin = GEN_get_P_min(gen);
du = (umax-umin > eps) ? umax-umin : eps;
a1 = umax-u;
a2 = u-umin;
b = eps*eps/du;
sqrterm1 = sqrt(a1*a1+b*b+eps*eps);
sqrterm2 = sqrt(a2*a2+b*b+eps*eps);
// f
f[*Jcounter] = a1 + b - sqrterm1; // upper
f[*Jcounter+1] = a2 + b - sqrterm2; // lower
// J
J[*Jcounter] = -(1-a1/sqrterm1);
J[*Jcounter+1] = (1-a2/sqrterm2);
// H
H = MAT_array_get(H_array,*Jcounter);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm1*sqrterm1*sqrterm1));
H = MAT_array_get(H_array,*Jcounter+1);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm2*sqrterm2*sqrterm2));
(*Jcounter)++;
(*Jcounter)++;
}
// Reactive power (Q)
if (GEN_has_flags(gen,FLAG_BOUNDED,GEN_VAR_Q) &&
GEN_has_flags(gen,FLAG_VARS,GEN_VAR_Q)) {
u = VEC_get(var_values,GEN_get_index_Q(gen,t));
umax = GEN_get_Q_max(gen);
umin = GEN_get_Q_min(gen);
du = (umax-umin > eps) ? umax-umin : eps;
a1 = umax-u;
a2 = u-umin;
b = eps*eps/du;
sqrterm1 = sqrt(a1*a1+b*b+eps*eps);
sqrterm2 = sqrt(a2*a2+b*b+eps*eps);
// f
f[*Jcounter] = a1 + b - sqrterm1; // upper
f[*Jcounter+1] = a2 + b - sqrterm2; // lower
// J
J[*Jcounter] = -(1-a1/sqrterm1);
J[*Jcounter+1] = (1-a2/sqrterm2);
// H
H = MAT_array_get(H_array,*Jcounter);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm1*sqrterm1*sqrterm1));
H = MAT_array_get(H_array,*Jcounter+1);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm2*sqrterm2*sqrterm2));
(*Jcounter)++;
(*Jcounter)++;
}
}
// Shunts
for (shunt = BUS_get_shunt(bus); shunt != NULL; shunt = SHUNT_get_next(shunt)) {
// Susceptance
if (SHUNT_has_flags(shunt,FLAG_BOUNDED,SHUNT_VAR_SUSC) &&
SHUNT_has_flags(shunt,FLAG_VARS,SHUNT_VAR_SUSC)) {
u = VEC_get(var_values,SHUNT_get_index_b(shunt,t));
umax = SHUNT_get_b_max(shunt);
umin = SHUNT_get_b_min(shunt);
du = (umax-umin > eps) ? umax-umin : eps;
a1 = umax-u;
a2 = u-umin;
b = eps*eps/du;
sqrterm1 = sqrt(a1*a1+b*b+eps*eps);
sqrterm2 = sqrt(a2*a2+b*b+eps*eps);
// f
f[*Jcounter] = a1 + b - sqrterm1; // upper
f[*Jcounter+1] = a2 + b - sqrterm2; // lower
// J
J[*Jcounter] = -(1-a1/sqrterm1);
J[*Jcounter+1] = (1-a2/sqrterm2);
// H
H = MAT_array_get(H_array,*Jcounter);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm1*sqrterm1*sqrterm1));
H = MAT_array_get(H_array,*Jcounter+1);
MAT_set_d(H,0,-(b*b+eps*eps)/(sqrterm2*sqrterm2*sqrterm2));
(*Jcounter)++;
(*Jcounter)++;
}
}
}
// Update counted flag
bus_counted[bus_index_t[k]] = TRUE;
}
}