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Handbook for Planning Data Services <br />6. ERCOT Short Circuit Cases <br />Description: <br />Make available Owner transmission facility data required for updating the ERCOT short <br />circuit cases. Section 6.3 of the ERCOT Planning Guide states: " ERCOT shall collect <br />the short circuit data sets or data updates developed by each Transmission Service <br />Provider (TSP) and shall compile and maintain the short circuit cases." To meet the <br />requirements of Section 6.3, LCRA and Owners will perform the following, <br />Owner Shall: <br />1. Provide facility data to LCRA required by ERCOT. This includes but is not limited to: <br />transmission line parameters /characteristics, autotransformer data, station <br />location /bus configuration, and switching /interrupting device ratings. The parameters <br />/ characteristics and other data provided by the Owner shall be in the following <br />formats. <br />Transmission line impedance: <br />W <br />From <br />To station <br />Rl <br />Xi <br />B1 <br />RO <br />XO <br />Line Length <br />Station <br />138 <br />Lockhart <br />Mendoza <br />0.00682 <br />0.03560 <br />0101051 <br />0.03012 <br />0.11879 <br />932 <br />Note. minimum 5 -aigir precision requires tor snore circuli nrvuer r,, n, UflU o Va(UC.7, <br />Transmission line mutual coupling impedance values: <br />Including reference line, coupled line, mutual impedance (R, X), start & stop location <br />on each line. <br />9 1Rag, RGv. 0 <br />