def test_sorted_limiter(self):
"""
Tests for `SortedLimiter` class
Returns
-------
"""
self.cmp = Limiter(self.u, self.lower, self.upper)
self.cmp.list2array(len(self.u.v))
self.cmp.check_var()
self.rcmp = SortedLimiter(self.u, self.lower, self.upper, n_select=1)
self.rcmp.list2array(len(self.u.v))
self.rcmp.check_var()
self.assertSequenceEqual(self.rcmp.zl.tolist(),
[0., 0., 1., 0., 0., 0., 0., 0.])
self.assertSequenceEqual(self.rcmp.zi.tolist(),
[1., 1., 0., 1., 1., 1., 1., 0.])
self.assertSequenceEqual(self.rcmp.zu.tolist(),
[0., 0., 0., 0., 0., 0., 0., 1.])
# test when no `n_select` is specified
self.rcmp_noselect = SortedLimiter(self.u, self.lower, self.upper)
self.rcmp_noselect.list2array(len(self.u.v))
self.rcmp_noselect.check_var()
self.assertSequenceEqual(self.rcmp_noselect.zl.tolist(),
self.cmp.zl.tolist())
self.assertSequenceEqual(self.rcmp_noselect.zi.tolist(),
self.cmp.zi.tolist())
self.assertSequenceEqual(self.rcmp_noselect.zu.tolist(),
self.cmp.zu.tolist())
# test when no `n_select` is over range
self.rcmp_noselect = SortedLimiter(self.u,
self.lower,
self.upper,
n_select=999)
self.rcmp_noselect.list2array(len(self.u.v))
self.rcmp_noselect.check_var()
self.assertSequenceEqual(self.rcmp_noselect.zl.tolist(),
self.cmp.zl.tolist())
self.assertSequenceEqual(self.rcmp_noselect.zi.tolist(),
self.cmp.zi.tolist())
self.assertSequenceEqual(self.rcmp_noselect.zu.tolist(),
self.cmp.zu.tolist())
def __init__(self, system=None, config=None):
SlackData.__init__(self)
PVModel.__init__(self, system, config)
self.config.add(OrderedDict((('av2pv', 0), )))
self.config.add_extra(
"_help",
av2pv="convert Slack to PV in PFlow at P limits",
)
self.config.add_extra(
"_alt",
av2pv=(0, 1),
)
self.config.add_extra(
"_tex",
av2pv="z_{av2pv}",
)
self.a.v_setter = True
self.a.v_str = 'a0'
self.plim = SortedLimiter(u=self.p,
lower=self.pmin,
upper=self.pmax,
enable=self.config.av2pv)
self.p.e_str = "u*(plim_zi * (a0-a) + "\
"plim_zl * (pmin-p) + "\
"plim_zu * (pmax-p))"
def __init__(self, system=None, config=None):
super().__init__(system, config)
self.group = 'StaticGen'
self.flags.update({'pflow': True, 'collate': True})
self.config.add(OrderedDict((('pv2pq', 0), ('npv2pq', 1))))
self.config.add_extra(
"_help",
pv2pq="convert PV to PQ in PFlow at Q limits",
npv2pq="max. # of pv2pq conversion in each iteration",
)
self.config.add_extra("_alt", pv2pq=(0, 1), npv2pq=">=0")
self.config.add_extra(
"_tex",
pv2pq="z_{pv2pq}",
)
self.a = ExtAlgeb(model='Bus',
src='a',
indexer=self.bus,
tex_name=r'\theta')
self.v = ExtAlgeb(model='Bus',
src='v',
indexer=self.bus,
v_setter=True,
tex_name=r'V')
self.p = Algeb(info='actual active power generation',
unit='p.u.',
tex_name=r'p',
diag_eps=1e-6)
self.q = Algeb(info='actual reactive power generation',
unit='p.u.',
tex_name='q',
diag_eps=1e-6)
# TODO: implement switching starting from the second iteration
self.qlim = SortedLimiter(u=self.q,
lower=self.qmin,
upper=self.qmax,
enable=self.config.pv2pq,
n_select=self.config.npv2pq)
# variable initialization equations
self.v.v_str = 'v0'
self.p.v_str = 'p0'
self.q.v_str = 'q0'
# injections into buses have negative values
self.a.e_str = "-u * p"
self.v.e_str = "-u * q"
# power injection equations g(y) = 0
self.p.e_str = "u * (p0 - p)"
self.q.e_str = "u*(qlim_zi * (v0-v) + "\
"qlim_zl * (qmin-q) + "\
"qlim_zu * (qmax-q))"
def __init__(self, system=None, config=None):
SlackData.__init__(self)
PVModel.__init__(self, system, config)
self.config.add(OrderedDict((('av2pv', 0.), )))
self.a.v_setter = True
self.a.v_str = 'a0'
self.plim = SortedLimiter(u=self.p,
lower=self.pmin,
upper=self.pmax,
enable=self.config.av2pv)
self.p.e_str = "u * (plim_zi * (a0 - a) + \
def __init__(self, system=None, config=None):
super().__init__(system, config)
self.group = 'StaticGen'
self.flags.pflow = True
self.flags.tds = True
self.flags.tds_init = False
self.config.add(
OrderedDict((
('pv2pq', 0),
('npv2pq', 0),
('min_iter', 2),
('err_tol', 0.01),
('abs_violation', 1),
)))
self.config.add_extra(
"_help",
pv2pq="convert PV to PQ in PFlow at Q limits",
npv2pq="max. # of conversion each iteration, 0 - auto",
min_iter="iteration number starting from which to enable switching",
err_tol="iteration error below which to enable switching",
abs_violation='use absolute (1) or relative (0) limit violation',
)
self.config.add_extra(
"_alt",
pv2pq=(0, 1),
npv2pq=">=0",
min_iter='int',
err_tol='float',
abs_violation=(0, 1),
)
self.config.add_extra("_tex",
pv2pq="z_{pv2pq}",
npv2pq="n_{pv2pq}",
min_iter="sw_{iter}",
err_tol=r"\epsilon_{tol}")
self.SynGen = BackRef()
self.a = ExtAlgeb(model='Bus',
src='a',
indexer=self.bus,
tex_name=r'\theta')
self.v = ExtAlgeb(model='Bus',
src='v',
indexer=self.bus,
v_setter=True,
tex_name=r'V')
self.p = Algeb(info='actual active power generation',
unit='p.u.',
tex_name=r'p',
diag_eps=True)
self.q = Algeb(info='actual reactive power generation',
unit='p.u.',
tex_name='q',
diag_eps=True)
self.qlim = SortedLimiter(
u=self.q,
lower=self.qmin,
upper=self.qmax,
enable=self.config.pv2pq,
n_select=self.config.npv2pq,
min_iter=self.config.min_iter,
err_tol=self.config.err_tol,
abs_violation=self.config.abs_violation,
)
# variable initialization equations
self.v.v_str = 'v0'
self.p.v_str = 'p0'
self.q.v_str = 'q0'
# injections into buses have negative values
self.a.e_str = "-u * p"
self.v.e_str = "-u * q"
# power injection equations g(y) = 0
self.p.e_str = "u * (p0 - p)"
self.q.e_str = "u*(qlim_zi * (v0-v) + "\
"qlim_zl * (qmin-q) + "\
"qlim_zu * (qmax-q))"