Network description, oplast-format

nordel_x.data

This file contains input for:

  • Header counters

  • Lines (code 2)

  • Two-winding transformer (code 3)

  • Three-winding transformer (code 4)

  • Generator (code 5)

  • Busbar names (optional)

This file format is often referred to as the “Optlast format”. Samnett only relies on a limited amount of information from the network description. The relevant information is described below. A more thorough description is given in the Technical report TR A3098.

Example complete file

Example of complete file on optlast format:

24,20,7,0,0,0,
0,Lines,
2,10007,20008,3.2,15.6,130.0,0.0
2,10021,30023,1.6,7.8,130.0,0.0
2,20022,30013,4.8,23.4,130.0,0.0
2,20022,30014,5.6,27.3,130.0,0.0
2,10001,10002,0.0182,0.3882,66.0,0.0
2,10001,10003,0.0364,0.7764,66.0,0.0
2,10002,10004,0.1091,2.3291,66.0,0.0
2,10003,10005,0.1818,3.8818,66.0,0.0
2,10003,10006,0.0364,0.7764,66.0,0.0
2,10004,10006,0.1818,3.8818,66.0,0.0
2,20009,20012,0.1818,3.8818,66.0,0.0
2,20011,20012,0.0727,1.5527,66.0,0.0
2,20010,20011,0.1091,2.3291,66.0,0.0
2,20009,20010,0.0364,0.7764,66.0,0.0
2,30016,30018,0.0545,1.1645,66.0,0.0
2,30018,30020,0.0182,0.3882,66.0,0.0
2,30018,30019,0.0727,1.5527,66.0,0.0
2,30017,30019,0.0364,0.7764,66.0,0.0
2,30015,30016,0.1818,3.8818,66.0,0.0
2,30019,30024,0.0182,0.3882,66.0,0.0
0,Two-winding transformers,
3,10004,10007,0.0042,0.12,100.0,66.0,130.0,0.0,0.0,66.0,130.0,0.0,0.0,0.0,
3,10006,10021,0.0042,0.12,100.0,66.0,130.0,0.0,0.0,66.0,130.0,0.0,0.0,0.0,
3,20009,20008,0.0042,0.12,100.0,66.0,130.0,0.0,0.0,66.0,130.0,0.0,0.0,0.0,
3,20012,20022,0.0042,0.12,100.0,66.0,130.0,0.0,0.0,66.0,130.0,0.0,0.0,0.0,
3,30020,30023,0.0042,0.12,100.0,66.0,130.0,0.0,0.0,66.0,130.0,0.0,0.0,0.0,
3,30016,30013,0.0042,0.12,100.0,66.0,130.0,0.0,0.0,66.0,130.0,0.0,0.0,0.0,
3,30015,30014,0.0042,0.12,100.0,66.0,130.0,0.0,0.0,66.0,130.0,0.0,0.0,0.0,
0,Three-winding transformers,
4,25001,25039,25041,22.5,22.5,22.5,0.5,9.4,0.5,9.4,1.0,17.8,110.0,120.0,0.0,0.0,10.5,11.0,0.0,0.0,10.5,11.0,0,0.0,0.0,
0,Generator,
5,30019,1,0,0,0,0,0,0,0,0,
0,Samleskinne-navn,
90,24,
10001 N1          1
10002 N2          1
10003 N3          1
10004 N4          1
10005 N5          1
10006 N6          1
10007 N7          1
10021 N21         1
20008 N8          2
20022 N22         2
20009 N9          2
20010 N10         2
20011 N11         2
20012 N12         2
30013 N13         3
30014 N14         3
30023 N23         3
30015 N15         3
30016 N16         3
30017 N17         3
30018 N18         3
30019 N19         3
30020 N20         3
30024 N24         3
99,

Header counters

Defines the number of objects contained in the file.

Record format:

<Busbars>,<Lines>,<Two-WT>,<Three-WT>,<Unused>,<Unused>

Fields:

  • 1: Number of busbars (nodes) defined in the system

  • 2: Number of transmission line records

  • 3: Number of two-winding transformer records

  • 4: Number of three-winding transformer records

  • 5: Unused

  • 6: Unused

Example:

24,20,7,1,0,0

Lines (code 2)

Describes a transmission line connecting two busbars.

Record format:

2,<From busbar>,<To busbar>,<Resistance>,<Reactance>,<Base voltage>,...

Fields:

  • 1: From busbar

  • 2: To busbar

  • 3: Line resistance (ohm)

  • 4: Line reactance (ohm)

  • 5: Base voltage (kV)

  • 6: Unused parameter

Example:

2,10007,20008,3.2,15.6,130.0,...

Two-Winding Transformers (code 3)

Describes a transformer connecting two voltage levels.

Record format:

3,<From busbar>,<To busbar>,<Real>,<Imaginary>,<Rated power>,<Rated voltage regulating>,<Rated voltage firm>,...

Fields:

  • 1: From busbar (Regulating)

  • 2: To busbar (Firm)

  • 3: Short-circuit voltage (real) [% rated voltage]

  • 4: Short-circuit voltage (imaginary) [% rated voltage]

  • 5: Transformer rated power (MVA)

  • 6: Rated voltage regulating (kV)

  • 7: Rated voltage firm (kV)

  • 8->14: Unused parameter

Example:

3,10004,10007,0.0042,0.12,100.0,66.0,130.0,...

Three-Winding Transformers (code 4)

Describes a transformer with three connected windings.

Record format:

4,<Busbar 1>,<Busbar 2>,<Busbar 3>,...

Fields:

  • 1: Busbar 1

  • 2: Busbar 2

  • 3: Busbar 3

  • 4->25: Unused parameter

Example:

4,25001,25039,25041,...

Generator (code 5)

Describes a generator connected to a busbar.

Record format:

5,<Generator busbar>,...

Fields:

  • 1: Generator busbar

  • 2->10: Unused parameter

Example:

5,30019,1,0,0,0,0,0,0,0,0

Busbar Names

Header counter for Busbar names and areas

Record format:

90,<counter for number of busbars>,

Field:

  • Counter for number of busbars with name and area

Example:

90,24,

Maps busbar identifiers to human-readable names and areas.

Record format:

<Bus ID> <Name> <Area>

Fields:

  • Bus ID: Unique busbar identifier

  • Name: Busbar name

  • Area: Area or subsystem identifier

Example:

10001 N1 1