(nordel)= # 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: ```text ,,,,, ``` 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: ```text 24,20,7,1,0,0 ``` ## Lines (code 2) Describes a transmission line connecting two busbars. Record format: ```text 2,,,,,,... ``` Fields: - 1: From busbar - 2: To busbar - 3: Line resistance (ohm) - 4: Line reactance (ohm) - 5: Base voltage (kV) - 6: Unused parameter Example: ```text 2,10007,20008,3.2,15.6,130.0,... ``` ## Two-Winding Transformers (code 3) Describes a transformer connecting two voltage levels. Record format: ```text 3,,,,,,,,... ``` 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: ```text 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: ```text 4,,,,... ``` Fields: - 1: Busbar 1 - 2: Busbar 2 - 3: Busbar 3 - 4->25: Unused parameter Example: ```text 4,25001,25039,25041,... ``` ## Generator (code 5) Describes a generator connected to a busbar. Record format: ```text 5,,... ``` Fields: - 1: Generator busbar - 2->10: Unused parameter Example: ```text 5,30019,1,0,0,0,0,0,0,0,0 ``` ## Busbar Names Header counter for Busbar names and areas Record format: ```text 90,, ``` Field: - Counter for number of busbars with name and area Example: ```text 90,24, ``` Maps busbar identifiers to human-readable names and areas. Record format: ```text ``` Fields: - Bus ID: Unique busbar identifier - Name: Busbar name - Area: Area or subsystem identifier Example: ```text 10001 N1 1 ```