conditions extracted from the power flow analysis. Table 6.43 shows the summary for Alternative 1. Table 6.43: Motor Starting Performance for Alternative 1 Category C5 Category B (N-2) (N-1) Contingencies 679L and Category A 681L (From 680L (From … … (N-0) Hardisty 377S Substation Nilrem 574S to Tucuman to Tucuman 478S) 478S) Nominal Bus 138 138 138 Voltage (kV) Before 142.83 129.38 129.38 Start (kV) Substation After Motor 139.66 123.86 123.86 A Start (kV) Voltage Dip 3.17 5.52 5.52 (kV) % Voltage 2.22 4.27 4.27 Dip Nominal Bus .. .. … Voltage (kV) Before Motor Start (kV) Substation After Motor B Start (kV) Voltage Dip (kV) % Voltage Dip The motor starting results show that the voltage dip caused by motor starting at “across-the-line” Substation A and B 138 kV busses are below 5% under both system normal and contingency conditions. The simulation results suggest that the impact on the voltage due to “across-the-line” starting of one motor is acceptable. The induction motor curves and the voltages at Substation A and B busses are provided in Attachment K.] Sub-Synchronous Studies Analysis The AESO will provide detailed guidance if sub-synchronous studies are required.
conditions extracted from the power flow analysis. Table 6.43 shows the summary for Alternative 1. Table 6.43: Motor Starting Performance for Alternative 1 Contingencies Substation Category A (N-0) Category B (N-1) 681L (From Hardisty 377S to Tucuman 478S) Category C5 (N-2) 679L and 680L (From Nilrem 574S to Tucuman 478S) … … Substation A Nominal Bus Voltage (kV) 138 138 138 Before Start (kV) 142.83 129.38 129.38 After Motor Start (kV) 139.66 123.86 123.86 Voltage Dip (kV) 3.17 5.52 5.52 % Voltage Dip 2.22 4.27 4.27 Substation B Nominal Bus Voltage (kV) … .. .. Before Motor Start (kV) After Motor Start (kV) Voltage Dip (kV) % Voltage Dip The motor starting results show that the voltage dip caused by “across-the-line” motor starting at Substation A and B 138 kV busses are below 5% under both system normal and contingency conditions. The simulation results suggest that the impact on the voltage due to “across-the-line” starting of one motor is acceptable. The induction motor curves and the voltages at Substation A and B busses are provided in Attachment K.] Sub-Synchronous Studies Analysis The AESO will provide detailed guidance if sub-synchronous studies are required.
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