DC line implementation

datafiles/case9/case9_dcline.m

@@ -0,0 +1,80 @@
+function mpc = case9_dcline
+%T_CASE9_DCLINE   Same as T_CASE9_OPFV2 with addition of DC line data.
+%   Please see CASEFORMAT for details on the case file format.
+%
+%   See also: TOGGLE_DCLINE, IDX_DCLINE.
+
+%   MATPOWER
+
+%% MATPOWER Case Format : Version 2
+mpc.version = '2';
+
+%%-----  Power Flow Data  -----%%
+%% system MVA base
+mpc.baseMVA = 100;
+
+%% bus data
+%	bus_i	type	Pd	Qd	Gs	Bs	area	Vm	Va	baseKV	zone	Vmax	Vmin
+mpc.bus = [
+	1	3	0	0	0	0	1	1	0	345	1	1.1	0.9;
+	2	2	0	0	0	0	1	1	0	345	1	1.1	0.9;
+	30	2	0	0	0	0	1	1	0	345	1	1.1	0.9;
+	4	1	0	0	0	0	1	1	0	345	1	1.1	0.9;
+	5	1	90	30	0	0	1	1	0	345	1	1.1	0.9;
+	6	1	0	0	0	0	1	1	0	345	1	1.1	0.9;
+	7	1	100	35	0	0	1	1	0	345	1	1.1	0.9;
+	8	1	0	0	0	0	1	1	0	345	1	1.1	0.9;
+	9	1	125	50	0	0	1	1	0	345	1	1.1	0.9;
+];
+
+%% generator data
+%	bus	Pg	Qg	Qmax	Qmin	Vg	mBase	status	Pmax	Pmin	Pc1	Pc2	Qc1min	Qc1max	Qc2min	Qc2max	ramp_agc	ramp_10	ramp_30	ramp_q	apf
+mpc.gen = [
+	1	0	0	300	-300	1	100	1	250	90	0	0	0	0	0	0	0	0	0	0	0;
+	2	163	0	300	-300	1	100	1	300	10	0	200	-20	20	-10	10	0	0	0	0	0;
+	30	85	0	300	-300	1	100	1	270	10	0	200	-30	30	-15	15	0	0	0	0	0;
+];
+
+%% branch data
+%	fbus	tbus	r	x	b	rateA	rateB	rateC	ratio	angle	status	angmin	angmax
+mpc.branch = [
+	1	4	0	0.0576	0	0	250	250	0	0	1	-360	2.48;
+	4	5	0.017	0.092	0.158	0	250	250	0	0	1	-360	360;
+	5	6	0.039	0.17	0.358	150	150	150	0	0	1	-360	360;
+	30	6	0	0.0586	0	0	300	300	0	0	1	-360	360;
+	6	7	0.0119	0.1008	0.209	40	150	150	0	0	1	-360	360;
+	7	8	0.0085	0.072	0.149	250	250	250	0	0	1	-360	360;
+	8	2	0	0.0625	0	250	250	250	0	0	1	-360	360;
+	8	9	0.032	0.161	0.306	250	250	250	0	0	1	-360	360;
+	9	4	0.01	0.085	0.176	250	250	250	0	0	1	-2	360;
+];
+
+%%-----  OPF Data  -----%%
+%% generator cost data
+%	1	startup	shutdown	n	x1	y1	...	xn	yn
+%	2	startup	shutdown	n	c(n-1)	...	c0
+mpc.gencost = [
+	2	1500.00	0.00	3	0.11	5	150;
+	2	2000.00	0.00	3	0.085	1.2	600;
+	2	3000	0	3	0.1225	1	335;
+];
+
+%%-----  DC Line Data  -----
+%% Change 30-4 Vf to 1.0 from 1.01 to match with gen set-point voltage
+%	fbus	tbus	status	Pf	Pt	Qf	Qt	Vf	Vt	Pmin	Pmax	QminF	QmaxF	QminT	QmaxT	loss0	loss1
+mpc.dcline = [
+	30	4	1	10	8.9	0	0	1	1	1	10	-10	10	-10	10	1	0.01;
+	7	9	1	2	1.96	0	0	1	0.98	2	10	0	0	0	0	0	0;
+	5	8	1	0	0	0	0	1	1	1	10	-10	10	-10	10	0	0;
+	5	9	1	10	9.5	0	0	1	0.98	0	10	-10	10	-10	10	0	0.05;
+];
+
+%% DC line cost data
+%	1	startup	shutdown	n	x1	y1	...	xn	yn
+%	2	startup	shutdown	n	c(n-1)	...	c0
+mpc.dclinecost = [
+	2	0	0	2	0	0	0	0	0	0	0	0	0	0;
+	2	0	0	2	0	0	0	0	0	0	0	0	0	0;
+	2	0	0	2	0	0	0	0	0	0	0	0	0	0;
+	2	0	0	2	7.3	0	0	0	0	0	0	0	0	0;
+];

include/constants.h

@@ -18,7 +18,8 @@
                              */
 #define NLOAD_AT_BUS_MAX 32 /**< Maximum number of loads allowed at a bus */
 #define NPHASE 1            /**< Per-phase analysis */
-#define MAX_KV_LEVELS 20    /**< Maximum KV levels */
+#define MAX_KV_LEVELS                                                          \
+  200 /**< Maximum KV (voltage) levels allowed in input file */
 
 /* Fuel types for generators */
 #define GENFUEL_COAL 0      /* Coal */

include/private/psimpl.h

@@ -300,6 +300,24 @@ struct _p_PSLINE {
 
   PSBUS connbuses[2]; /**< From and to buses */
 
+  /****** For DC lines **********/
+  PetscBool isdcline;       /**< Is line a DC line? */
+  PetscScalar pmin;         /**< lower limit on PF (MW flow at "from" end) */
+  PetscScalar pmax;         /**< upper limit on PF (MW flow at "from" end) */
+  PetscScalar Vf;           /**<Voltage set-point at "from" bus (p.u.) */
+  PetscScalar Vt;           /**<Voltage set-point at "to" bus (p.u.) */
+  PetscScalar qminf;        /**< lower limit on QF (MVAr flow at "from" end) */
+  PetscScalar qmaxf;        /**< upper limit on QF (MVAr flow at "from" end) */
+  PetscScalar qmint;        /**< lower limit on QT (MVAr flow at "to" end) */
+  PetscScalar qmaxt;        /**< upper limit on QT (MVAr flow at "to" end) */
+  PetscScalar loss0, loss1; /* constant and linear term for loss function (loss
+                               = loss0 + loss1*PF) */
+  /* loss0 given in terms of MW, loss1 is dimensionless */
+  PetscScalar mult_pmin, mult_pmax;
+  PetscScalar mult_qminf, mult_qmaxf, mult_qmint, mult_qmaxt;
+  PetscScalar mult_pf;
+  /*******************/
+
   PetscScalar
       mult_sf; /* Lagrange multiplier for from bus injection (set by OPFLOW) */
   PetscScalar
@@ -323,6 +341,8 @@ struct _p_PSLINE {
   PetscInt nconeq;   /* Number of equality constraints */
   PetscInt nconineq; /* Number of inequality constraints */
 
+  PetscInt startxdcloc; /* Location of starting variable for dc line */
+
   PetscInt starteqloc;   /* Starting location for equality constraints */
   PetscInt startineqloc; /* Starting location for inequality constraints */
 };
@@ -364,11 +384,14 @@ struct _p_PSSUBST {
 
 /* Struct to save system summary stats */
 typedef struct {
-  PetscInt Nbus;             /* Number of buses */
-  PetscInt Ngen;             /* Number of generators */
-  PetscInt NgenON;           /* Number of committed generators */
-  PetscInt Nline;            /* Number of lines */
-  PetscInt NlineON;          /* Number of lines ON */
+  PetscInt Nbus;      /* Number of buses */
+  PetscInt Ngen;      /* Number of generators */
+  PetscInt NgenON;    /* Number of committed generators */
+  PetscInt Nline;     /* Number of lines (includes DC lines) */
+  PetscInt NlineON;   /* Number of lines ON (includes DC lines) */
+  PetscInt Ndcline;   /* Number of dc lines */
+  PetscInt NdclineON; /* Number of dc lines ON */
+
   PetscInt Nload;            /* Number of loads */
   PetscScalar total_pgencap; /* Total active generation capacity */
 
@@ -384,19 +407,23 @@ typedef struct {
  */
 struct _p_PS {
   PetscScalar MVAbase; /* System base MVA */
-  PetscInt Nbus, Ngen, Nline,
-      Nload; /* global # of buses,gens,branches, and loads (includes elements
-                which are out of service */
-  PetscInt nbus, ngen, nline,
-      nload;                 /* local # of buses,gens,branches,and loads */
-  PetscInt NlineON, nlineON; /* Number of active lines */
-  PetscInt NgenON, ngenON;   /* Number of active generators */
-  PetscInt Nref, nref;       /* Number of reference buses */
+  PetscInt Nbus, Ngen, Nline, Nload,
+      Ndcline; /* global # of buses,gens,branches,loads, and dclines (includes
+           elements which are out of service */
+  PetscInt nbus, ngen, nline, nload,
+      ndcline;               /* local # of buses,gens,branches,and loads */
+  PetscInt NlineON, nlineON; /* Number of active lines (includes DC lines) */
+  PetscInt NdclineON, ndclineON; /* Number of active dc lines */
+  PetscInt NgenON, ngenON;       /* Number of active generators */
+  PetscInt Nref, nref;           /* Number of reference buses */
   /* Number of generator types */
   PetscInt ngencoal, ngenwind, ngensolar, ngenng, ngennuclear, ngenhydro,
       ngenundefined;
   /* Number of renewable generators (solar, wind) */
   PetscInt ngenrenew;
+  /* Number of isolated buses */
+  PetscInt nisolated_buses, Nisolated_buses;
+  PetscInt *isolated_buses; /* Array to hold isolated buses */
 
   PSBUS bus;
   PSLOAD load;

src/opflow/interface/opflow.cpp

@@ -2762,6 +2762,7 @@ PetscErrorCode OPFLOWSetUpPS(OPFLOW opflow) {
   PetscFunctionBegin;
   ierr = PSSetUp(opflow->ps);
   CHKERRQ(ierr);
+
   /* set individual load costs if necessary */
 
   PetscFunctionReturn(0);