gusucode.com > matpower工具箱源码程序 > matpower工具箱源码程序/MP2_0/runpf.m
function [MVAbase, bus, gen, branch, success, et] = runpf(casename, mpopt, fname) %RUNPF Runs a power flow. % % [baseMVA, bus, gen, branch, success, et] = runpf(casename, mpopt, fname) % % Runs a full Newton's method power flow where casename is the name of % the m-file (without the .m extension) containing the power flow data, % and mpopt is a MATPOWER options vector (see 'help mpoption' for details). % Uses default options if 2nd parameter is not given, and 'case' if 1st % parameter is not given. The results may optionally be printed to a file % (appended if the file exists) whose name is given in fname (in addition % to printing to STDOUT). Optionally returns the final values of baseMVA, % bus, gen, branch, success, and et. % MATPOWER Version 2.0 % by Ray Zimmerman, PSERC Cornell 12/24/97 % Copyright (c) 1996, 1997 by Power System Engineering Research Center (PSERC) % See http://www.pserc.cornell.edu/ for more info. tic; %% define named indices into bus, gen, branch matrices [PQ, PV, REF, NONE, BUS_I, BUS_TYPE, PD, QD, GS, BS, BUS_AREA, VM, ... VA, BASE_KV, ZONE, VMAX, VMIN, LAM_P, LAM_Q, MU_VMAX, MU_VMIN] = idx_bus; [GEN_BUS, PG, QG, QMAX, QMIN, VG, MBASE, ... GEN_STATUS, PMAX, PMIN, MU_PMAX, MU_PMIN, MU_QMAX, MU_QMIN] = idx_gen; %% default arguments if nargin < 3 fname = ''; %% don't print results to a file if nargin < 2 mpopt = mpoption; %% use default options if nargin < 1 casename = 'case'; %% default data file is 'case.m' end end end %% options alg = mpopt(1); %% read data & convert to internal bus numbering [baseMVA, bus, gen, branch] = feval(casename); [i2e, bus, gen, branch] = ext2int(bus, gen, branch); %% get bus index lists of each type of bus [ref, pv, pq] = bustypes(bus, gen); %% build admittance matrices [Ybus, Yf, Yt] = makeYbus(baseMVA, bus, branch); %% compute complex bus power injections (generation - load) Sbus = makeSbus(baseMVA, bus, gen); %% generator info on = find(gen(:, GEN_STATUS)); %% which generators are on? %% initialize V and Pg from data from case file % V0 = ones(size(bus, 1), 1); %% flat start V0 = bus(:, VM) .* exp(sqrt(-1) * pi/180 * bus(:, VA)); V0(gen(on, GEN_BUS)) = gen(on, VG) ./ abs(V0(gen(on, GEN_BUS))).* V0(gen(on, GEN_BUS)); %% run the power flow t0 = clock; if alg == 1 [V, success, iterations] = newtonpf(Ybus, Sbus, V0, ref, pv, pq, mpopt); elseif alg == 2 | alg == 3 [Bp, Bpp] = makeB(baseMVA, bus, branch, alg); [V, success, iterations] = fdpf(Ybus, Sbus, V0, Bp, Bpp, ref, pv, pq, mpopt); else error('Only Newton''s method and fast-decoupled power flow algorithms currently implemented.'); end %% compute flows etc. [bus, gen, branch] = pfsoln(baseMVA, bus, gen, branch, Ybus, Yf, Yt, V, ref, pv, pq); et = etime(clock, t0); %% convert back to original bus numbering & print results [bus, gen, branch] = int2ext(i2e, bus, gen, branch); if fname [fd, msg] = fopen(fname, 'at'); if fd == -1 error(msg); else printpf(baseMVA, bus, gen, branch, [], success, et, fd, mpopt); fclose(fd); end end printpf(baseMVA, bus, gen, branch, [], success, et, 1, mpopt); %% this is just to prevent it from printing baseMVA %% when called with no output arguments if nargout, MVAbase = baseMVA; end return;