Table 4: Data Requirements (Transformers) Field Description Requirements Measure FROM Bus Number of the bus to which the Number FROM end of the transformer is attached. See “” TO Bus Number of the bus to which the Number “TO” end of the transformer is attached. See “” Circuit ID Circuit identifier Transformer modeling equivalent circuits shall have Circuit ID set to Two-character circuit identifier ‘99’ or ‘EQ.’ Status Transformer Status Transformers shall have the anticipated status of the 0 = out-of-service transformer in the case. 1 = in-service 2 = secondary open 3 = tertiary open 4 = primary open Tap Control Transformer type code Type 1 or 11 = Fixed 2 or 12 = TCUL 4 or 14 = Phase-Shifting Regulated Number of Bus with voltage Regulation of a remote bus that Bus Number regulated or “TO” bus number for does not represent actual system phase-regulated transformer operation shall be avoided. Impedance Impedance correction table Table number Number Tert Bus Tertiary winding Bus number Number See “” 3wpt Bus Internal ‘3-winding point’ Bus Number number See “Data Requirements (Buses)”
Table 4: Data Requirements (Transformers) Field Description Requirements Measure FROM Bus Number Number of the bus to which the FROM end of the transformer is attached. See “” TO Bus Number Number of the bus to which the “TO” end of the transformer is attached. See “” Circuit ID Circuit identifier Two-character circuit identifier Transformer modeling equivalent circuits shall have Circuit ID set to ‘99’ or ‘EQ.’ Status Transformer Status 0 = out-of-service 1 = in-service 2 = secondary open 3 = tertiary open 4 = primary open Transformers shall have the anticipated status of the transformer in the case. Tap Control Type Transformer type code 1 or 11 = Fixed 2 or 12 = TCUL 4 or 14 = Phase-Shifting Regulated Bus Number Number of Bus with voltage regulated or “TO” bus number for phase-regulated transformer Regulation of a remote bus that does not represent actual system operation shall be avoided. Impedance Table Number Impedance correction table number Tert Bus Number Tertiary winding Bus number See “” 3wpt Bus Number Internal ‘3-winding point’ Bus number See “Data Requirements (Buses)”
WECC%20Data%20Preparation%20Manual_Rev-BCCS6_Redline_SRWGApproved.docx