This section contains parameters of transmission lines, series capacitors and series reactors. The zero-sequence mutual coupling data are specified in a later section. All the impedances are based on the system MVA base and the nominal kV of the bus terminals. The first line in the section must say: [TRANSMISSION LINE DATA]. This is followed by the data described below. A blank line ends the section.
1. Bus1 Name: Bus name at one end of the branch, enclosed in quotation marks.
2. Bus1 Base kV: Nominal kV of Bus1.
3. Bus2 Name: Bus name at the other end of branch, enclosed in quotation marks.
4. Bus2 Base kV: Nominal kV of Bus2. This must be the same as Bus1’s base kV.
5. Circuit Identifier: A two-character circuit identifier. Parallel branches must have different circuit identifiers. The circuit identifier is enclosed in quotation marks.
6. In-Service Flag: 1 if the branch is in-service; 0 if it is not. The default value is 1.
7. Meter Flag: 0.0 if the line is metered at Bus1. 100.0 if it is metered at Bus2. No other values are allowed.
8. Branch Name: A 12-character name for the line, enclosed in quotation marks. The branch name is blank by default.
9. Type Name: A 12-character name for the configuration type used to calculate the electrical parameters for the transmission line. The type name is enclosed in quotation marks. The type name, if not blank, must match one of the type names in the ASPEN Line Table File, ASPEN.LTB. The type name is blank by default.
10. Length: Physical length of transmission line. This value is required when the Type Name is not blank. The default value is 0.0.
11. Unit of Length: Unit of length for transmission line, enclosed in quotation marks. It is required when the Type Name is not blank. The unit of length must be one of the following: kt (for 1000 feet), ft, mi, m or km.
12. R: Positive-sequence series resistance in per unit. The same value is used for the negative sequence.
13. X: Positive-sequence series reactance in per unit. X must be negative for a series capacitor. The same value is used for the negative sequence. R and X cannot both be zero.
14. G1: Positive-sequence shunt conductance on the Bus1 side, in per unit. The same value is used for the negative sequence. Default value is 0.0.
15. B1: Positive-sequence shunt susceptance on the Bus1 side, in per unit. The same value is used for the negative sequence. Default value is 0.0.
16. G2: Positive-sequence shunt conductance on the Bus2 side, in per unit. The same value is used for the negative sequence. G2 can be different from G1, but unbalanced lines cannot be mutually coupled. The default value is G1.
17. B2: Positive-sequence shunt susceptance on the Bus2 side, in per unit. The same value is used for the negative sequence. B2 can be different from B1, but unbalanced lines cannot be mutually coupled. The default value is B1.
18. R0: Zero-sequence series resistance in per unit.
19. X0: Zero-sequence series reactance in per unit. Xo must be negative for a series capacitor. Ro and Xo cannot both be zero.
20. G10: Zero-sequence shunt conductance on the Bus1 side, in per unit. The default value is G1.
21. B10: Zero-sequence shunt susceptance on the Bus1 side, in per unit. The default value is B1.
22. G20: Zero-sequence shunt conductance on the Bus2 side, in per unit. The default value is G10.
23. B20: Zero-sequence shunt susceptance on the Bus2 side, in per unit. The default value is B10.
24. Number of Current Ratings: Number of current ratings to follow. It must be 0, 1, 2, 3 or 4.
25. Current Rating #1: Current rating in ampere. The default value is 0.0.
26. Current Rating #2: Current rating in ampere. The default value is 0.0.
27. Current Rating #3: Current rating in ampere. The default value is 0.0.
28. Current Rating #4: Current rating in ampere. The default value is 0.0.
29. MOV protected level current: For series capacitor, enter the protected level current of the MOV in kA, which must be positive. The default is 0.0.
30. Series compensation flag: Enter 0 for transmission line; 1 for in-service series capacitor/reactor; 2 for bypassed series capacitor/reactor.
31. I^2T Rating: I^2T rating of line in ampere^2 Sec.
32. Memo: Comments with a maximum of 512 characters. Any alpha-numeric characters can be used, except for the string delimiter (single or double quotation mark). The comment text is enclosed in quotation marks.
33. Tags: Tag string with a maximum of 512 characters. Tags in string are separated by semicolon. Any alpha-numeric characters can be used, except for the string delimiter (single or double quotation mark). The tag string is enclosed in quotation marks.
34. In-service Date: Set to 0 if not available. Otherwise enter an unsigned 32-bit integer that store the year/month/date information given by the CTime object in Microsoft Foundation Class.
35. Out-of-Service Date: Set to 0 if not available. Otherwise enter an unsigned 32-bit integer that store the year/month/date information given by the CTime object in Microsoft Foundation Class.
36. UDF: User-defined data fields. Enter the list of user defined field values as a tab delimited text string enclosed in single quotes.
An example transmission line data section is shown below.
[TRANSMISSION LINE DATA]
'GLEN LYN' 132 'CLAYTOR' 132 '1'= 1 0 'Glen/Clay' '' 0 'ft' /
0.0192 0.0575 0 0.0132 0 0.0132 0.0384 0.115 0 0.0066 0 0.0066 4 0 0 0 0 0 0 0 '' '' 0 0
'GLEN LYN' 132 'TEXAS' 132 '1'= 1 0 '' '' 0 'ft' /
0.0452 0.1852 0 0.0102 0 0.0102 0.0452 0.1852 0 0.0102 0 0.0102 4 0 0 0 0 0 0 0 '' '' 0 0