APPENDIX A AESO System Planning Study Red Deer Technical Report Report Index Section Introduction Number Number of Pages 1 Introduction 9 2 Planning Criteria and Study Assumptions 14 3 Existing System Assessment 5 4 Development of System Reinforcement Options 18 5 Transmission Alternatives- Near Term Assessment 5 6 Transmission Alternatives- Long Term Assessment 4 7 Alternatives Comparison 4 8 Sensitivity Analysis 2 9 Recommended Proposal 7 Attachment A Existing System Analysis 120 Attachment B Historical Substation Load Details 2 Attachment C Alternative Details 8 Attachment D Steady State and Voltage Stability Analysis 1752 Attachment E Transient Stability Analysis 2732 Attachment F Sensitivity Analysis 20 iii TABLE OF CONTENTS 1.0 Introduction .............................................................................................. 1 1.1 Study Region of Existing System ....................................................................................... 1 1.2 Study Objectives and Scope .............................................................................................. 8 2.0 Planning Criteria and Study Assumptions ........................................... 10 2.1 Reliability Criteria .............................................................................................................. 10 2.2 Voltage Stability Methodology .......................................................................................... 12 2.3 Monitored Areas ............................................................................................................... 13 2.4 Load Scenarios ................................................................................................................. 14 2.5 Load Forecast ................................................................................................................... 15 2.6 Generation Assumptions .................................................................................................. 16 2.7 Facility Ratings ................................................................................................................. 17 2.8 Transmission Assumptions ............................................................................................... 19 2.8.1 Bulk System Assumptions ....................................................................................... 19 2.8.2 Hanna Region System Assumptions ....................................................................... 20 2.8.3 Central East Region System Assumptions .............................................................. 21 2.8.4 Southern Alberta Transmission Reinforcements (SATR) ........................................ 22 2.9 System Inter Dependencies ............................................................................................. 23 3.0 Existing System Assessment ............................................................... 24 3.1 Power Flow Analysis ........................................................................................................ 24 3.1.1 Load Supply Adequacy ............................................................................................ 24 3.1.2 High SOK Cut Plane Flows ...................................................................................... 25 3.2 Voltage Stability Analysis ................................................................................................. 25 3.3 Transfer Capability Analysis ............................................................................................. 26 3.4 Short Circuit Analysis ....................................................................................................... 27 3.5 Existing System Need Assessment Summary ................................................................. 27 4.0 Development of System Reinforcement Options ................................ 29 4.1 Transmission Technology Options Screening .................................................................. 29 4.1.1 New Transmission Lines .......................................................................................... 29 4.1.2 Transmission Line Upgrades and Rebuild ............................................................... 30 4.1.3 Voltage Up-Rating .................................................................................................... 31 4.1.4 Build New Transmission Substations and Upgrade Existing Stations ..................... 31 4.1.5 Provide Reactive Power Support Equipment .......................................................... 31 4.1.6 Consideration of Operational Measures .................................................................. 32 4.2 Formulation and Screening of Red Deer Alternatives ...................................................... 32 4.2.1 Common Set of Transmission System Development .............................................. 33 4.2.2 Alternative 1 Development (80L Alternative) ........................................................... 37 4.2.3 Development of Alternative 2 (Hybrid Alternative) ................................................... 41 4.2.4 Development of Alternative 3 (Double Loop Alternative) ......................................... 45 4.2.5 Summary of Screening of Alternatives .................................................................... 45 5.0 Transmission Alternatives- Near Term Assessment (2012) ............... 47 5.1 Power Flow Analysis (2012) ............................................................................................. 47 5.1.1 System Performance under Category C and D Contingency Events ...................... 48 5.2 Transient Stability Studies (2012) .................................................................................... 48 5.3 Voltage Stability (P-V and Q-V) Analysis ......................................................................... 49 5.4 Transfer Capability Analysis ............................................................................................. 49 5.5 Short Circuit Analysis ....................................................................................................... 51 iv 6.0 Transmission Alternatives- Long Term Assessment (2017) .............. 52 6.1 Power Flow Analysis (2017) ............................................................................................. 52 6.1.1 System Performance under Category C and D Contingency Events ...................... 52 6.2 2017 Transient Stability Studies (2017) ........................................................................... 53 6.3 Voltage Stability (P-V and Q-V) Analysis ......................................................................... 53 6.4 Transfer Capability Analysis ............................................................................................. 54 6.5 Short Circuit Analysis ....................................................................................................... 55 7.0 Comparison of Alternatives .................................................................. 56 8.0 Sensitivity Analysis (Load Forecast) .................................................... 60 8.1 Sensitivity Analysis for 2012 ............................................................................................. 60 8.2 Sensitivity Analysis for 2017 ............................................................................................. 61 8.3 Sensitivity Study Conclusions ........................................................................................... 61 9.0 Recommended Development ................................................................ 62 9.1 Rationale for the Recommended Development ............................................................... 65 v LIST OF TABLES AND FIGURES LIST OF TABLES Table 2-1: General Acceptable Range of Voltage (kV) ................................................................ 11 Table 2-2: Acceptable Voltage Deviation and Equipment Loading .............................................. 11 Table 2-3: Buses Voltage (kV) Range in the Red Deer Area (OPP 702) ..................................... 11 Table 2-4: Voltage Stability Criteria .............................................................................................. 13 Table 2-5: Summary of Monitored Areas for Load flow Analysis ................................................. 14 Table 2-6: Assumptions for Import/Export to BC and SK (MW) ................................................... 15 Table 2-7: Assumptions for HVDC Dispatch in 2017 (MW) ......................................................... 15 Table 2-8: Load Forecast Modeled in Red Deer Region (MW) .................................................... 15 Table 2-9: Rated Capacity for Existing Generation in the Red Deer Region ............................... 16 Table 2-10:Generation Dispatch (MW) .......................................................................................... 17 Table 2-11:Transmission Line Ratings in the Red Deer Region ................................................... 17 Table 2-12:Transformer Ratings in Red Deer Region ................................................................... 19 Table 4-1: List of the Common Set of Transmission System Developments ............................... 36 Table 4-2: 2012 List of Alternative 1 Development Excluding Common Set of Transmission System Developments ................................................................................................. 38 Table 5-1: Power Flow Analysis Results – 2012 .........................................................................