function [baseMVA, bus, gen, branch, areas, gencost] = case9%CASE9    Power flow data for 9 bus, 3 generator case.%   Please see 'help caseformat' for details on the case file format.%%   Based on data from Joe H. Chow's book, p. 70.%   MATPOWER%   $Id: case9.m,v 1.7 2007/09/17 16:07:48 ray Exp $%%-----  Power Flow Data  -----%%%% system MVA basebaseMVA = 100;%% bus data%	bus_i	type	Pd	Qd	Gs	Bs	area	Vm	Va	baseKV	zone	Vmax	Vminbus = [	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;	3	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	Pmingen = [	1	0	0	300	-300	1	100	1	250	10;	2	163	0	300	-300	1	100	1	300	10;	3	85	0	300	-300	1	100	1	270	10;];%% branch data%	fbus	tbus	r	x	b	rateA	rateB	rateC	ratio	angle	statusbranch = [	1	4	0	0.0576	0	250	250	250	0	0	1;	4	5	0.017	0.092	0.158	250	250	250	0	0	1;	5	6	0.039	0.17	0.358	150	150	150	0	0	1;	3	6	0	0.0586	0	300	300	300	0	0	1;	6	7	0.0119	0.1008	0.209	150	150	150	0	0	1;	7	8	0.0085	0.072	0.149	250	250	250	0	0	1;	8	2	0	0.0625	0	250	250	250	0	0	1;	8	9	0.032	0.161	0.306	250	250	250	0	0	1;	9	4	0.01	0.085	0.176	250	250	250	0	0	1;];%%-----  OPF Data  -----%%%% area dataareas = [	1	5;];%% generator cost data%	1	startup	shutdown	n	x1	y1	...	xn	yn%	2	startup	shutdown	n	c(n-1)	...	c0return;