#include ../data/case14.txt
#include ../lib/idx_gen.txt
#include ../lib/idx_bus.txt
#include ../lib/idx_brch.txt
#include ../lib/make_y_bus.txt
#include ../lib/dsbus_dv.txt
#include ../lib/make_jac.txt
#include ../lib/make_sdzip.txt

Ybus = make_y_bus(baseMVA, bus, branch);
return make_sdzip(baseMVA, bus, 1);