mp.dme_line3p

class mp.dme_line3p

Bases: mp.dm_element

mp.dme_line3p - Data model element for 3-phase line.

Implements the data element model for 3-phase distribution line elements.

Adds the following columns in the main data table, found in the tab property:

Name	Type	Description
bus_fr	integer	bus ID (uid) of “from” 3-phase bus
bus_to	integer	bus ID (uid) of “to” 3-phase bus
lc	double	index into line construction table
len	double	line length (miles)
pl1_fr	double	phase 1 active power injection at “from” end (kW)
ql1_fr	double	phase 1 reactive power injection at “from” end (kVAr)
pl2_fr	double	phase 2 active power injection at “from” end (kW)
ql2_fr	double	phase 2 reactive power injection at “from” end (kVAr)
pl3_fr	double	phase 3 active power injection at “from” end (kW)
ql3_fr	double	phase 3 reactive power injection at “from” end (kVAr)
pl1_to	double	phase 1 active power injection at “to” end (kW)
ql1_to	double	phase 1 reactive power injection at “to” end (kVAr)
pl2_to	double	phase 2 active power injection at “to” end (kW)
ql2_to	double	phase 2 reactive power injection at “to” end (kVAr)
pl3_to	double	phase 3 active power injection at “to” end (kW)
ql3_to	double	phase 3 reactive power injection at “to” end (kVAr)

The line construction table in the lc_tab property is defined as a table with the following columns:

Name	Type	Description
id	integer	unique line construction ID, referenced from lc column of main data table
r	double	6 resistence parameters for forming symmetric 3x3 series impedance matrix (Ohms per mile)
x	double	6 reactance parameters for forming symmetric 3x3 series impedance matrix (Ohms per mile)
c	double	6 susceptance parameters for forming symmetric 3x3 shunt susceptance matrix (nF per mile)

Property Summary

fbus

bus index vector for “from” bus (all lines)

tbus

bus index vector for “to” bus (all lines)

freq

system frequency, in Hz

lc

index into lc_tab for lines that are on

lc_y_idx

index into ys and yc for lines that are on

len

length for lines that are on

lc_tab

line construction table

ys

cell array of 3x3 series admittance matrices for lc rows

yc

cell array of 3x3 shunt admittance matrices for lc rows

Method Summary

name()

label()

labels()

cxn_type()

cxn_idx_prop()

main_table_var_names()

lc_table_var_names()

create_line_construction_table(id, r, x, c)

initialize(dm)

update_status(dm)

build_params(dm)

vec2symmat(v)

Make a symmetric matrix from a vector of 6 values.

symmat2vec(M)

Extract a vector of 6 values from a matrix assumed to be symmetric.

pretty_print(dm, section, out_e, mpopt, fd, pp_args)

pp_have_section_sum(mpopt, pp_args)

pp_data_sum(dm, rows, out_e, mpopt, fd, pp_args)

pp_have_section_det(mpopt, pp_args)

pp_get_headers_det(dm, out_e, mpopt, pp_args)

pp_data_row_det(dm, k, out_e, mpopt, fd, pp_args)